Merge branch 'master' into upstream

Conflicts:

	net/ieee80211/ieee80211_crypt_tkip.c
	net/ieee80211/ieee80211_crypt_wep.c

186 files changed, 6981 insertions, 3131 deletions

diff --git a/arch/i386/crypto/Makefile b/arch/i386/crypto/Makefile
index 103c353d0a6..3fd19af18e3 100644
--- a/arch/i386/crypto/Makefile
+++ b/arch/i386/crypto/Makefile
@@ -5,5 +5,8 @@
 # 
 
 obj-$(CONFIG_CRYPTO_AES_586) += aes-i586.o
+obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o
 
 aes-i586-y := aes-i586-asm.o aes.o
+twofish-i586-y := twofish-i586-asm.o twofish.o
+
diff --git a/arch/i386/crypto/aes.c b/arch/i386/crypto/aes.c
index d3806daa3de..49aad9397f1 100644
--- a/arch/i386/crypto/aes.c
+++ b/arch/i386/crypto/aes.c
@@ -379,12 +379,13 @@ static void gen_tabs(void)
 }
 
 static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-		       unsigned int key_len, u32 *flags)
+		       unsigned int key_len)
 {
 	int i;
 	u32 ss[8];
 	struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
 	const __le32 *key = (const __le32 *)in_key;
+	u32 *flags = &tfm->crt_flags;
 
 	/* encryption schedule */
 	
diff --git a/arch/i386/crypto/twofish-i586-asm.S b/arch/i386/crypto/twofish-i586-asm.S
new file mode 100644
index 00000000000..39b98ed2c1b
--- /dev/null
+++ b/arch/i386/crypto/twofish-i586-asm.S
@@ -0,0 +1,335 @@
+/***************************************************************************
+*   Copyright (C) 2006 by Joachim Fritschi, <jfritschi@freenet.de>        *
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+*   This program is distributed in the hope that it will be useful,       *
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+*   GNU General Public License for more details.                          *
+*                                                                         *
+*   You should have received a copy of the GNU General Public License     *
+*   along with this program; if not, write to the                         *
+*   Free Software Foundation, Inc.,                                       *
+*   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+***************************************************************************/
+
+.file "twofish-i586-asm.S"
+.text
+
+#include <asm/asm-offsets.h>
+
+/* return adress at 0 */
+
+#define in_blk    12  /* input byte array address parameter*/
+#define out_blk   8  /* output byte array address parameter*/
+#define tfm       4  /* Twofish context structure */
+
+#define a_offset	0
+#define b_offset	4
+#define c_offset	8
+#define d_offset	12
+
+/* Structure of the crypto context struct*/
+
+#define s0	0	/* S0 Array 256 Words each */
+#define s1	1024	/* S1 Array */
+#define s2	2048	/* S2 Array */
+#define s3	3072	/* S3 Array */
+#define w	4096	/* 8 whitening keys (word) */
+#define k	4128	/* key 1-32 ( word ) */
+
+/* define a few register aliases to allow macro substitution */
+
+#define R0D    %eax
+#define R0B    %al
+#define R0H    %ah
+
+#define R1D    %ebx
+#define R1B    %bl
+#define R1H    %bh
+
+#define R2D    %ecx
+#define R2B    %cl
+#define R2H    %ch
+
+#define R3D    %edx
+#define R3B    %dl
+#define R3H    %dh
+
+
+/* performs input whitening */
+#define input_whitening(src,context,offset)\
+	xor	w+offset(context),	src;
+
+/* performs input whitening */
+#define output_whitening(src,context,offset)\
+	xor	w+16+offset(context),	src;
+
+/*
+ * a input register containing a (rotated 16)
+ * b input register containing b
+ * c input register containing c
+ * d input register containing d (already rol $1)
+ * operations on a and b are interleaved to increase performance
+ */
+#define encrypt_round(a,b,c,d,round)\
+	push	d ## D;\
+	movzx	b ## B,		%edi;\
+	mov	s1(%ebp,%edi,4),d ## D;\
+	movzx	a ## B,		%edi;\
+	mov	s2(%ebp,%edi,4),%esi;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	s2(%ebp,%edi,4),d ## D;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s3(%ebp,%edi,4),%esi;\
+	movzx	b ## B,		%edi;\
+	xor	s3(%ebp,%edi,4),d ## D;\
+	movzx	a ## B,		%edi;\
+	xor	(%ebp,%edi,4),	%esi;\
+	movzx	b ## H,		%edi;\
+	ror	$15,		b ## D;\
+	xor	(%ebp,%edi,4),	d ## D;\
+	movzx	a ## H,		%edi;\
+	xor	s1(%ebp,%edi,4),%esi;\
+	pop	%edi;\
+	add	d ## D,		%esi;\
+	add	%esi,		d ## D;\
+	add	k+round(%ebp),	%esi;\
+	xor	%esi,		c ## D;\
+	rol	$15,		c ## D;\
+	add	k+4+round(%ebp),d ## D;\
+	xor	%edi,		d ## D;
+
+/*
+ * a input register containing a (rotated 16)
+ * b input register containing b
+ * c input register containing c
+ * d input register containing d (already rol $1)
+ * operations on a and b are interleaved to increase performance
+ * last round has different rotations for the output preparation
+ */
+#define encrypt_last_round(a,b,c,d,round)\
+	push	d ## D;\
+	movzx	b ## B,		%edi;\
+	mov	s1(%ebp,%edi,4),d ## D;\
+	movzx	a ## B,		%edi;\
+	mov	s2(%ebp,%edi,4),%esi;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	s2(%ebp,%edi,4),d ## D;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s3(%ebp,%edi,4),%esi;\
+	movzx	b ## B,		%edi;\
+	xor	s3(%ebp,%edi,4),d ## D;\
+	movzx	a ## B,		%edi;\
+	xor	(%ebp,%edi,4),	%esi;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	(%ebp,%edi,4),	d ## D;\
+	movzx	a ## H,		%edi;\
+	xor	s1(%ebp,%edi,4),%esi;\
+	pop	%edi;\
+	add	d ## D,		%esi;\
+	add	%esi,		d ## D;\
+	add	k+round(%ebp),	%esi;\
+	xor	%esi,		c ## D;\
+	ror	$1,		c ## D;\
+	add	k+4+round(%ebp),d ## D;\
+	xor	%edi,		d ## D;
+
+/*
+ * a input register containing a
+ * b input register containing b (rotated 16)
+ * c input register containing c
+ * d input register containing d (already rol $1)
+ * operations on a and b are interleaved to increase performance
+ */
+#define decrypt_round(a,b,c,d,round)\
+	push	c ## D;\
+	movzx	a ## B,		%edi;\
+	mov	(%ebp,%edi,4),	c ## D;\
+	movzx	b ## B,		%edi;\
+	mov	s3(%ebp,%edi,4),%esi;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s1(%ebp,%edi,4),c ## D;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	(%ebp,%edi,4),	%esi;\
+	movzx	a ## B,		%edi;\
+	xor	s2(%ebp,%edi,4),c ## D;\
+	movzx	b ## B,		%edi;\
+	xor	s1(%ebp,%edi,4),%esi;\
+	movzx	a ## H,		%edi;\
+	ror	$15,		a ## D;\
+	xor	s3(%ebp,%edi,4),c ## D;\
+	movzx	b ## H,		%edi;\
+	xor	s2(%ebp,%edi,4),%esi;\
+	pop	%edi;\
+	add	%esi,		c ## D;\
+	add	c ## D,		%esi;\
+	add	k+round(%ebp),	c ## D;\
+	xor	%edi,		c ## D;\
+	add	k+4+round(%ebp),%esi;\
+	xor	%esi,		d ## D;\
+	rol	$15,		d ## D;
+
+/*
+ * a input register containing a
+ * b input register containing b (rotated 16)
+ * c input register containing c
+ * d input register containing d (already rol $1)
+ * operations on a and b are interleaved to increase performance
+ * last round has different rotations for the output preparation
+ */
+#define decrypt_last_round(a,b,c,d,round)\
+	push	c ## D;\
+	movzx	a ## B,		%edi;\
+	mov	(%ebp,%edi,4),	c ## D;\
+	movzx	b ## B,		%edi;\
+	mov	s3(%ebp,%edi,4),%esi;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s1(%ebp,%edi,4),c ## D;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	(%ebp,%edi,4),	%esi;\
+	movzx	a ## B,		%edi;\
+	xor	s2(%ebp,%edi,4),c ## D;\
+	movzx	b ## B,		%edi;\
+	xor	s1(%ebp,%edi,4),%esi;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s3(%ebp,%edi,4),c ## D;\
+	movzx	b ## H,		%edi;\
+	xor	s2(%ebp,%edi,4),%esi;\
+	pop	%edi;\
+	add	%esi,		c ## D;\
+	add	c ## D,		%esi;\
+	add	k+round(%ebp),	c ## D;\
+	xor	%edi,		c ## D;\
+	add	k+4+round(%ebp),%esi;\
+	xor	%esi,		d ## D;\
+	ror	$1,		d ## D;
+
+.align 4
+.global twofish_enc_blk
+.global twofish_dec_blk
+
+twofish_enc_blk:
+	push	%ebp			/* save registers according to calling convention*/
+	push    %ebx
+	push    %esi
+	push    %edi
+
+	mov	tfm + 16(%esp),	%ebp	/* abuse the base pointer: set new base bointer to the crypto tfm */
+	add	$crypto_tfm_ctx_offset, %ebp	/* ctx adress */
+	mov     in_blk+16(%esp),%edi	/* input adress in edi */
+
+	mov	(%edi),		%eax
+	mov	b_offset(%edi),	%ebx
+	mov	c_offset(%edi),	%ecx
+	mov	d_offset(%edi),	%edx
+	input_whitening(%eax,%ebp,a_offset)
+	ror	$16,	%eax
+	input_whitening(%ebx,%ebp,b_offset)
+	input_whitening(%ecx,%ebp,c_offset)
+	input_whitening(%edx,%ebp,d_offset)
+	rol	$1,	%edx
+
+	encrypt_round(R0,R1,R2,R3,0);
+	encrypt_round(R2,R3,R0,R1,8);
+	encrypt_round(R0,R1,R2,R3,2*8);
+	encrypt_round(R2,R3,R0,R1,3*8);
+	encrypt_round(R0,R1,R2,R3,4*8);
+	encrypt_round(R2,R3,R0,R1,5*8);
+	encrypt_round(R0,R1,R2,R3,6*8);
+	encrypt_round(R2,R3,R0,R1,7*8);
+	encrypt_round(R0,R1,R2,R3,8*8);
+	encrypt_round(R2,R3,R0,R1,9*8);
+	encrypt_round(R0,R1,R2,R3,10*8);
+	encrypt_round(R2,R3,R0,R1,11*8);
+	encrypt_round(R0,R1,R2,R3,12*8);
+	encrypt_round(R2,R3,R0,R1,13*8);
+	encrypt_round(R0,R1,R2,R3,14*8);
+	encrypt_last_round(R2,R3,R0,R1,15*8);
+
+	output_whitening(%eax,%ebp,c_offset)
+	output_whitening(%ebx,%ebp,d_offset)
+	output_whitening(%ecx,%ebp,a_offset)
+	output_whitening(%edx,%ebp,b_offset)
+	mov	out_blk+16(%esp),%edi;
+	mov	%eax,		c_offset(%edi)
+	mov	%ebx,		d_offset(%edi)
+	mov	%ecx,		(%edi)
+	mov	%edx,		b_offset(%edi)
+
+	pop	%edi
+	pop	%esi
+	pop	%ebx
+	pop	%ebp
+	mov	$1,	%eax
+	ret
+
+twofish_dec_blk:
+	push	%ebp			/* save registers according to calling convention*/
+	push    %ebx
+	push    %esi
+	push    %edi
+
+
+	mov	tfm + 16(%esp),	%ebp	/* abuse the base pointer: set new base bointer to the crypto tfm */
+	add	$crypto_tfm_ctx_offset, %ebp	/* ctx adress */
+	mov     in_blk+16(%esp),%edi	/* input adress in edi */
+
+	mov	(%edi),		%eax
+	mov	b_offset(%edi),	%ebx
+	mov	c_offset(%edi),	%ecx
+	mov	d_offset(%edi),	%edx
+	output_whitening(%eax,%ebp,a_offset)
+	output_whitening(%ebx,%ebp,b_offset)
+	ror	$16,	%ebx
+	output_whitening(%ecx,%ebp,c_offset)
+	output_whitening(%edx,%ebp,d_offset)
+	rol	$1,	%ecx
+
+	decrypt_round(R0,R1,R2,R3,15*8);
+	decrypt_round(R2,R3,R0,R1,14*8);
+	decrypt_round(R0,R1,R2,R3,13*8);
+	decrypt_round(R2,R3,R0,R1,12*8);
+	decrypt_round(R0,R1,R2,R3,11*8);
+	decrypt_round(R2,R3,R0,R1,10*8);
+	decrypt_round(R0,R1,R2,R3,9*8);
+	decrypt_round(R2,R3,R0,R1,8*8);
+	decrypt_round(R0,R1,R2,R3,7*8);
+	decrypt_round(R2,R3,R0,R1,6*8);
+	decrypt_round(R0,R1,R2,R3,5*8);
+	decrypt_round(R2,R3,R0,R1,4*8);
+	decrypt_round(R0,R1,R2,R3,3*8);
+	decrypt_round(R2,R3,R0,R1,2*8);
+	decrypt_round(R0,R1,R2,R3,1*8);
+	decrypt_last_round(R2,R3,R0,R1,0);
+
+	input_whitening(%eax,%ebp,c_offset)
+	input_whitening(%ebx,%ebp,d_offset)
+	input_whitening(%ecx,%ebp,a_offset)
+	input_whitening(%edx,%ebp,b_offset)
+	mov	out_blk+16(%esp),%edi;
+	mov	%eax,		c_offset(%edi)
+	mov	%ebx,		d_offset(%edi)
+	mov	%ecx,		(%edi)
+	mov	%edx,		b_offset(%edi)
+
+	pop	%edi
+	pop	%esi
+	pop	%ebx
+	pop	%ebp
+	mov	$1,	%eax
+	ret
diff --git a/arch/i386/crypto/twofish.c b/arch/i386/crypto/twofish.c
new file mode 100644
index 00000000000..e3004dfe9c7
--- /dev/null
+++ b/arch/i386/crypto/twofish.c
@@ -0,0 +1,97 @@
+/*
+ *  Glue Code for optimized 586 assembler version of TWOFISH
+ *
+ * Originally Twofish for GPG
+ * By Matthew Skala <mskala@ansuz.sooke.bc.ca>, July 26, 1998
+ * 256-bit key length added March 20, 1999
+ * Some modifications to reduce the text size by Werner Koch, April, 1998
+ * Ported to the kerneli patch by Marc Mutz <Marc@Mutz.com>
+ * Ported to CryptoAPI by Colin Slater <hoho@tacomeat.net>
+ *
+ * The original author has disclaimed all copyright interest in this
+ * code and thus put it in the public domain. The subsequent authors
+ * have put this under the GNU General Public License.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ *
+ * This code is a "clean room" implementation, written from the paper
+ * _Twofish: A 128-Bit Block Cipher_ by Bruce Schneier, John Kelsey,
+ * Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson, available
+ * through http://www.counterpane.com/twofish.html
+ *
+ * For background information on multiplication in finite fields, used for
+ * the matrix operations in the key schedule, see the book _Contemporary
+ * Abstract Algebra_ by Joseph A. Gallian, especially chapter 22 in the
+ * Third Edition.
+ */
+
+#include <crypto/twofish.h>
+#include <linux/crypto.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+
+asmlinkage void twofish_enc_blk(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
+asmlinkage void twofish_dec_blk(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
+
+static void twofish_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	twofish_enc_blk(tfm, dst, src);
+}
+
+static void twofish_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	twofish_dec_blk(tfm, dst, src);
+}
+
+static struct crypto_alg alg = {
+	.cra_name		=	"twofish",
+	.cra_driver_name	=	"twofish-i586",
+	.cra_priority		=	200,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	TF_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct twofish_ctx),
+	.cra_alignmask		=	3,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	TF_MIN_KEY_SIZE,
+			.cia_max_keysize	=	TF_MAX_KEY_SIZE,
+			.cia_setkey		=	twofish_setkey,
+			.cia_encrypt		=	twofish_encrypt,
+			.cia_decrypt		=	twofish_decrypt
+		}
+	}
+};
+
+static int __init init(void)
+{
+	return crypto_register_alg(&alg);
+}
+
+static void __exit fini(void)
+{
+	crypto_unregister_alg(&alg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION ("Twofish Cipher Algorithm, i586 asm optimized");
+MODULE_ALIAS("twofish");
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 694b0c63ee5..de1ef2fa1a2 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -417,6 +417,17 @@ config PPC_MAPLE
           This option enables support for the Maple 970FX Evaluation Board.
 	  For more informations, refer to <http://www.970eval.com>
 
+config PPC_PASEMI
+	depends on PPC_MULTIPLATFORM && PPC64
+	bool "PA Semi SoC-based platforms"
+	default n
+	select MPIC
+	select PPC_UDBG_16550
+	select GENERIC_TBSYNC
+	help
+	  This option enables support for PA Semi's PWRficient line
+	  of SoC processors, including PA6T-1682M
+
 config PPC_CELL
 	bool
 	default n
@@ -436,7 +447,8 @@ config PPC_IBM_CELL_BLADE
 	select UDBG_RTAS_CONSOLE
 
 config UDBG_RTAS_CONSOLE
-	bool
+	bool "RTAS based debug console"
+	depends on PPC_RTAS
 	default n
 
 config XICS
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index e29ef77d3b0..5ad149b47e3 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -18,6 +18,20 @@ config DEBUG_STACK_USAGE
 
 	  This option will slow down process creation somewhat.
 
+config HCALL_STATS
+	bool "Hypervisor call instrumentation"
+	depends on PPC_PSERIES && DEBUG_FS
+	help
+	  Adds code to keep track of the number of hypervisor calls made and
+	  the amount of time spent in hypervisor callsr.  Wall time spent in
+	  each call is always calculated, and if available CPU cycles spent
+	  are also calculated.  A directory named hcall_inst is added at the
+	  root of the debugfs filesystem.  Within the hcall_inst directory
+	  are files that contain CPU specific call statistics.
+
+	  This option will add a small amount of overhead to all hypervisor
+	  calls.
+
 config DEBUGGER
 	bool "Enable debugger hooks"
 	depends on DEBUG_KERNEL
@@ -74,6 +88,8 @@ config XMON
 	  very early during boot. 'xmon=on' will just enable the xmon
 	  debugger hooks.  'xmon=off' will disable the debugger hooks
 	  if CONFIG_XMON_DEFAULT is set.
+	  xmon will print a backtrace on the very first invocation.
+	  'xmon=nobt' will disable this autobacktrace.
 
 config XMON_DEFAULT
 	bool "Enable xmon by default"
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index d961bfeed05..e73774136b5 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -36,11 +36,16 @@ zliblinuxheader := zlib.h zconf.h zutil.h
 $(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
 #$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h)
 
-src-boot := crt0.S string.S prom.c stdio.c main.c div64.S
+src-boot-$(CONFIG_PPC_MULTIPLATFORM) := of.c
+src-boot := crt0.S string.S stdio.c main.c div64.S $(src-boot-y)
 src-boot += $(zlib)
 src-boot := $(addprefix $(obj)/, $(src-boot))
 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
 
+ifeq ($(call cc-option-yn, -fstack-protector),y)
+BOOTCFLAGS	+= -fno-stack-protector
+endif
+
 BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(obj)
 
 quiet_cmd_copy_zlib = COPY    $@
diff --git a/arch/powerpc/boot/dts/mpc8349emds.dts b/arch/powerpc/boot/dts/mpc8349emds.dts
index 12f5dbf3055..efceb343265 100644
--- a/arch/powerpc/boot/dts/mpc8349emds.dts
+++ b/arch/powerpc/boot/dts/mpc8349emds.dts
@@ -214,10 +214,10 @@
 					 b800 0 0 4 700 15 8
 
 					/* IDSEL 0x18 */
-					 b000 0 0 1 700 15 8
-					 b000 0 0 2 700 16 8
-					 b000 0 0 3 700 17 8
-					 b000 0 0 4 700 14 8>;
+					 c000 0 0 1 700 15 8
+					 c000 0 0 2 700 16 8
+					 c000 0 0 3 700 17 8
+					 c000 0 0 4 700 14 8>;
 			interrupt-parent = <700>;
 			interrupts = <42 8>;
 			bus-range = <0 0>;
@@ -274,10 +274,10 @@
 					 b800 0 0 4 700 15 8
 
 					/* IDSEL 0x18 */
-					 b000 0 0 1 700 15 8
-					 b000 0 0 2 700 16 8
-					 b000 0 0 3 700 17 8
-					 b000 0 0 4 700 14 8>;
+					 c000 0 0 1 700 15 8
+					 c000 0 0 2 700 16 8
+					 c000 0 0 3 700 17 8
+					 c000 0 0 4 700 14 8>;
 			interrupt-parent = <700>;
 			interrupts = <42 8>;
 			bus-range = <0 0>;
diff --git a/arch/powerpc/boot/flatdevtree.h b/arch/powerpc/boot/flatdevtree.h
new file mode 100644
index 00000000000..761c8dc8400
--- /dev/null
+++ b/arch/powerpc/boot/flatdevtree.h
@@ -0,0 +1,46 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef FLATDEVTREE_H
+#define FLATDEVTREE_H
+
+#include "types.h"
+
+/* Definitions used by the flattened device tree */
+#define OF_DT_HEADER            0xd00dfeed      /* marker */
+#define OF_DT_BEGIN_NODE        0x1     /* Start of node, full name */
+#define OF_DT_END_NODE          0x2     /* End node */
+#define OF_DT_PROP              0x3     /* Property: name off, size, content */
+#define OF_DT_NOP               0x4     /* nop */
+#define OF_DT_END               0x9
+
+#define OF_DT_VERSION           0x10
+
+struct boot_param_header {
+	u32 magic;              /* magic word OF_DT_HEADER */
+	u32 totalsize;          /* total size of DT block */
+	u32 off_dt_struct;      /* offset to structure */
+	u32 off_dt_strings;     /* offset to strings */
+	u32 off_mem_rsvmap;     /* offset to memory reserve map */
+	u32 version;            /* format version */
+	u32 last_comp_version;  /* last compatible version */
+	/* version 2 fields below */
+	u32 boot_cpuid_phys;    /* Physical CPU id we're booting on */
+	/* version 3 fields below */
+	u32 dt_strings_size;    /* size of the DT strings block */
+};
+
+#endif /* FLATDEVTREE_H */
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index b66634c9ea3..d719bb9333d 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -14,17 +14,12 @@
 #include "page.h"
 #include "string.h"
 #include "stdio.h"
-#include "prom.h"
 #include "zlib.h"
+#include "ops.h"
+#include "flatdevtree.h"
 
 extern void flush_cache(void *, unsigned long);
 
-
-/* Value picked to match that used by yaboot */
-#define PROG_START	0x01400000	/* only used on 64-bit systems */
-#define RAM_END		(512<<20)	/* Fixme: use OF */
-#define	ONE_MB		0x100000
-
 extern char _start[];
 extern char __bss_start[];
 extern char _end[];
@@ -33,14 +28,6 @@ extern char _vmlinux_end[];
 extern char _initrd_start[];
 extern char _initrd_end[];
 
-/* A buffer that may be edited by tools operating on a zImage binary so as to
- * edit the command line passed to vmlinux (by setting /chosen/bootargs).
- * The buffer is put in it's own section so that tools may locate it easier.
- */
-static char builtin_cmdline[512]
-	__attribute__((section("__builtin_cmdline")));
-
-
 struct addr_range {
 	unsigned long addr;
 	unsigned long size;
@@ -51,21 +38,16 @@ static struct addr_range vmlinuz;
 static struct addr_range initrd;
 
 static unsigned long elfoffset;
+static int is_64bit;
 
-static char scratch[46912];	/* scratch space for gunzip, from zlib_inflate_workspacesize() */
+/* scratch space for gunzip; 46912 is from zlib_inflate_workspacesize() */
+static char scratch[46912];
 static char elfheader[256];
 
-
-typedef void (*kernel_entry_t)( unsigned long,
-                                unsigned long,
-                                void *,
-				void *);
-
+typedef void (*kernel_entry_t)(unsigned long, unsigned long, void *);
 
 #undef DEBUG
 
-static unsigned long claim_base;
-
 #define HEAD_CRC	2
 #define EXTRA_FIELD	4
 #define ORIG_NAME	8
@@ -123,24 +105,6 @@ static void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
 	zlib_inflateEnd(&s);
 }
 
-static unsigned long try_claim(unsigned long size)
-{
-	unsigned long addr = 0;
-
-	for(; claim_base < RAM_END; claim_base += ONE_MB) {
-#ifdef DEBUG
-		printf("    trying: 0x%08lx\n\r", claim_base);
-#endif
-		addr = (unsigned long)claim(claim_base, size, 0);
-		if ((void *)addr != (void *)-1)
-			break;
-	}
-	if (addr == 0)
-		return 0;
-	claim_base = PAGE_ALIGN(claim_base + size);
-	return addr;
-}
-
 static int is_elf64(void *hdr)
 {
 	Elf64_Ehdr *elf64 = hdr;
@@ -169,16 +133,7 @@ static int is_elf64(void *hdr)
 	vmlinux.size = (unsigned long)elf64ph->p_filesz + elfoffset;
 	vmlinux.memsize = (unsigned long)elf64ph->p_memsz + elfoffset;
 
-#if defined(PROG_START)
-	/*
-	 * Maintain a "magic" minimum address. This keeps some older
-	 * firmware platforms running.
-	 */
-
-	if (claim_base < PROG_START)
-		claim_base = PROG_START;
-#endif
-
+	is_64bit = 1;
 	return 1;
 }
 
@@ -212,47 +167,9 @@ static int is_elf32(void *hdr)
 	return 1;
 }
 
-void export_cmdline(void* chosen_handle)
-{
-        int len;
-        char cmdline[2] = { 0, 0 };
-
-	if (builtin_cmdline[0] == 0)
-		return;
-
-        len = getprop(chosen_handle, "bootargs", cmdline, sizeof(cmdline));
-        if (len > 0 && cmdline[0] != 0)
-		return;
-
-	setprop(chosen_handle, "bootargs", builtin_cmdline,
-		strlen(builtin_cmdline) + 1);
-}
-
-
-void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
+static void prep_kernel(unsigned long *a1, unsigned long *a2)
 {
 	int len;
-	kernel_entry_t kernel_entry;
-
-	memset(__bss_start, 0, _end - __bss_start);
-
-	prom = (int (*)(void *)) promptr;
-	chosen_handle = finddevice("/chosen");
-	if (chosen_handle == (void *) -1)
-		exit();
-	if (getprop(chosen_handle, "stdout", &stdout, sizeof(stdout)) != 4)
-		exit();
-
-	printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r", _start, sp);
-
-	/*
-	 * The first available claim_base must be above the end of the
-	 * the loaded kernel wrapper file (_start to _end includes the
-	 * initrd image if it is present) and rounded up to a nice
-	 * 1 MB boundary for good measure.
-	 */
-
-	claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
 
 	vmlinuz.addr = (unsigned long)_vmlinux_start;
 	vmlinuz.size = (unsigned long)(_vmlinux_end - _vmlinux_start);
@@ -263,43 +180,51 @@ void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 		gunzip(elfheader, sizeof(elfheader),
 				(unsigned char *)vmlinuz.addr, &len);
 	} else
-		memcpy(elfheader, (const void *)vmlinuz.addr, sizeof(elfheader));
+		memcpy(elfheader, (const void *)vmlinuz.addr,
+		       sizeof(elfheader));
 
 	if (!is_elf64(elfheader) && !is_elf32(elfheader)) {
 		printf("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
 		exit();
 	}
+	if (platform_ops.image_hdr)
+		platform_ops.image_hdr(elfheader);
 
-	/* We need to claim the memsize plus the file offset since gzip
+	/* We need to alloc the memsize plus the file offset since gzip
 	 * will expand the header (file offset), then the kernel, then
 	 * possible rubbish we don't care about. But the kernel bss must
 	 * be claimed (it will be zero'd by the kernel itself)
 	 */
 	printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux.memsize);
-	vmlinux.addr = try_claim(vmlinux.memsize);
+	vmlinux.addr = (unsigned long)malloc(vmlinux.memsize);
 	if (vmlinux.addr == 0) {
 		printf("Can't allocate memory for kernel image !\n\r");
 		exit();
 	}
 
 	/*
-	 * Now we try to claim memory for the initrd (and copy it there)
+	 * Now we try to alloc memory for the initrd (and copy it there)
 	 */
 	initrd.size = (unsigned long)(_initrd_end - _initrd_start);
 	initrd.memsize = initrd.size;
 	if ( initrd.size > 0 ) {
-		printf("Allocating 0x%lx bytes for initrd ...\n\r", initrd.size);
-		initrd.addr = try_claim(initrd.size);
+		printf("Allocating 0x%lx bytes for initrd ...\n\r",
+		       initrd.size);
+		initrd.addr = (unsigned long)malloc((u32)initrd.size);
 		if (initrd.addr == 0) {
-			printf("Can't allocate memory for initial ramdisk !\n\r");
+			printf("Can't allocate memory for initial "
+					"ramdisk !\n\r");
 			exit();
 		}
-		a1 = initrd.addr;
-		a2 = initrd.size;
-		printf("initial ramdisk moving 0x%lx <- 0x%lx (0x%lx bytes)\n\r",
-		       initrd.addr, (unsigned long)_initrd_start, initrd.size);
-		memmove((void *)initrd.addr, (void *)_initrd_start, initrd.size);
-		printf("initrd head: 0x%lx\n\r", *((unsigned long *)initrd.addr));
+		*a1 = initrd.addr;
+		*a2 = initrd.size;
+		printf("initial ramdisk moving 0x%lx <- 0x%lx "
+			"(0x%lx bytes)\n\r", initrd.addr,
+			(unsigned long)_initrd_start, initrd.size);
+		memmove((void *)initrd.addr, (void *)_initrd_start,
+			initrd.size);
+		printf("initrd head: 0x%lx\n\r",
+				*((unsigned long *)initrd.addr));
 	}
 
 	/* Eventually gunzip the kernel */
@@ -311,11 +236,10 @@ void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 			(unsigned char *)vmlinuz.addr, &len);
 		printf("done 0x%lx bytes\n\r", len);
 	} else {
-		memmove((void *)vmlinux.addr,(void *)vmlinuz.addr,vmlinuz.size);
+		memmove((void *)vmlinux.addr,(void *)vmlinuz.addr,
+			vmlinuz.size);
 	}
 
-	export_cmdline(chosen_handle);
-
 	/* Skip over the ELF header */
 #ifdef DEBUG
 	printf("... skipping 0x%lx bytes of ELF header\n\r",
@@ -324,23 +248,107 @@ void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 	vmlinux.addr += elfoffset;
 
 	flush_cache((void *)vmlinux.addr, vmlinux.size);
+}
 
-	kernel_entry = (kernel_entry_t)vmlinux.addr;
-#ifdef DEBUG
-	printf( "kernel:\n\r"
-		"        entry addr = 0x%lx\n\r"
-		"        a1         = 0x%lx,\n\r"
-		"        a2         = 0x%lx,\n\r"
-		"        prom       = 0x%lx,\n\r"
-		"        bi_recs    = 0x%lx,\n\r",
-		(unsigned long)kernel_entry, a1, a2,
-		(unsigned long)prom, NULL);
-#endif
+void __attribute__ ((weak)) ft_init(void *dt_blob)
+{
+}
 
-	kernel_entry(a1, a2, prom, NULL);
+/* A buffer that may be edited by tools operating on a zImage binary so as to
+ * edit the command line passed to vmlinux (by setting /chosen/bootargs).
+ * The buffer is put in it's own section so that tools may locate it easier.
+ */
+static char builtin_cmdline[COMMAND_LINE_SIZE]
+	__attribute__((__section__("__builtin_cmdline")));
 
-	printf("Error: Linux kernel returned to zImage bootloader!\n\r");
+static void get_cmdline(char *buf, int size)
+{
+	void *devp;
+	int len = strlen(builtin_cmdline);
 
-	exit();
+	buf[0] = '\0';
+
+	if (len > 0) { /* builtin_cmdline overrides dt's /chosen/bootargs */
+		len = min(len, size-1);
+		strncpy(buf, builtin_cmdline, len);
+		buf[len] = '\0';
+	}
+	else if ((devp = finddevice("/chosen")))
+		getprop(devp, "bootargs", buf, size);
+}
+
+static void set_cmdline(char *buf)
+{
+	void *devp;
+
+	if ((devp = finddevice("/chosen")))
+		setprop(devp, "bootargs", buf, strlen(buf) + 1);
 }
 
+/* Section where ft can be tacked on after zImage is built */
+union blobspace {
+	struct boot_param_header hdr;
+	char space[8*1024];
+} dt_blob __attribute__((__section__("__builtin_ft")));
+
+struct platform_ops platform_ops;
+struct dt_ops dt_ops;
+struct console_ops console_ops;
+
+void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
+{
+	int have_dt = 0;
+	kernel_entry_t kentry;
+	char cmdline[COMMAND_LINE_SIZE];
+
+	memset(__bss_start, 0, _end - __bss_start);
+	memset(&platform_ops, 0, sizeof(platform_ops));
+	memset(&dt_ops, 0, sizeof(dt_ops));
+	memset(&console_ops, 0, sizeof(console_ops));
+
+	/* Override the dt_ops and device tree if there was an flat dev
+	 * tree attached to the zImage.
+	 */
+	if (dt_blob.hdr.magic == OF_DT_HEADER) {
+		have_dt = 1;
+		ft_init(&dt_blob);
+	}
+
+	if (platform_init(promptr))
+		exit();
+	if (console_ops.open && (console_ops.open() < 0))
+		exit();
+	if (platform_ops.fixups)
+		platform_ops.fixups();
+
+	printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r",
+	       _start, sp);
+
+	prep_kernel(&a1, &a2);
+
+	/* If cmdline came from zimage wrapper or if we can edit the one
+	 * in the dt, print it out and edit it, if possible.
+	 */
+	if ((strlen(builtin_cmdline) > 0) || console_ops.edit_cmdline) {
+		get_cmdline(cmdline, COMMAND_LINE_SIZE);
+		printf("\n\rLinux/PowerPC load: %s", cmdline);
+		if (console_ops.edit_cmdline)
+			console_ops.edit_cmdline(cmdline, COMMAND_LINE_SIZE);
+		printf("\n\r");
+		set_cmdline(cmdline);
+	}
+
+	if (console_ops.close)
+		console_ops.close();
+
+	kentry = (kernel_entry_t) vmlinux.addr;
+	if (have_dt)
+		kentry(dt_ops.ft_addr(), 0, NULL);
+	else
+		/* XXX initrd addr/size should be passed in properties */
+		kentry(a1, a2, promptr);
+
+	/* console closed so printf below may not work */
+	printf("Error: Linux kernel returned to zImage boot wrapper!\n\r");
+	exit();
+}
diff --git a/arch/powerpc/boot/prom.c b/arch/powerpc/boot/of.c
index fa0057736f6..fd99f789a37 100644
--- a/arch/powerpc/boot/prom.c
+++ b/arch/powerpc/boot/of.c
@@ -8,15 +8,29 @@
  */
 #include <stdarg.h>
 #include <stddef.h>
+#include "types.h"
+#include "elf.h"
 #include "string.h"
 #include "stdio.h"
-#include "prom.h"
+#include "page.h"
+#include "ops.h"
 
-int (*prom)(void *);
-phandle chosen_handle;
-ihandle stdout;
+typedef void *ihandle;
+typedef void *phandle;
 
-int call_prom(const char *service, int nargs, int nret, ...)
+extern char _end[];
+
+/* Value picked to match that used by yaboot */
+#define PROG_START	0x01400000	/* only used on 64-bit systems */
+#define RAM_END		(512<<20)	/* Fixme: use OF */
+#define	ONE_MB		0x100000
+
+int (*prom) (void *);
+
+
+static unsigned long claim_base;
+
+static int call_prom(const char *service, int nargs, int nret, ...)
 {
 	int i;
 	struct prom_args {
@@ -45,7 +59,7 @@ int call_prom(const char *service, int nargs, int nret, ...)
 	return (nret > 0)? args.args[nargs]: 0;
 }
 
-int call_prom_ret(const char *service, int nargs, int nret,
+static int call_prom_ret(const char *service, int nargs, int nret,
 		  unsigned int *rets, ...)
 {
 	int i;
@@ -79,11 +93,6 @@ int call_prom_ret(const char *service, int nargs, int nret,
 	return (nret > 0)? args.args[nargs]: 0;
 }
 
-int write(void *handle, void *ptr, int nb)
-{
-	return call_prom("write", 3, 1, handle, ptr, nb);
-}
-
 /*
  * Older OF's require that when claiming a specific range of addresses,
  * we claim the physical space in the /memory node and the virtual
@@ -142,7 +151,7 @@ static int check_of_version(void)
 	return 1;
 }
 
-void *claim(unsigned long virt, unsigned long size, unsigned long align)
+static void *claim(unsigned long virt, unsigned long size, unsigned long align)
 {
 	int ret;
 	unsigned int result;
@@ -151,7 +160,7 @@ void *claim(unsigned long virt, unsigned long size, unsigned long align)
 		need_map = check_of_version();
 	if (align || !need_map)
 		return (void *) call_prom("claim", 3, 1, virt, size, align);
-	
+
 	ret = call_prom_ret("call-method", 5, 2, &result, "claim", memory,
 			    align, size, virt);
 	if (ret != 0 || result == -1)
@@ -163,3 +172,112 @@ void *claim(unsigned long virt, unsigned long size, unsigned long align)
 			0x12, size, virt, virt);
 	return (void *) virt;
 }
+
+static void *of_try_claim(u32 size)
+{
+	unsigned long addr = 0;
+	static u8 first_time = 1;
+
+	if (first_time) {
+		claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
+		first_time = 0;
+	}
+
+	for(; claim_base < RAM_END; claim_base += ONE_MB) {
+#ifdef DEBUG
+		printf("    trying: 0x%08lx\n\r", claim_base);
+#endif
+		addr = (unsigned long)claim(claim_base, size, 0);
+		if ((void *)addr != (void *)-1)
+			break;
+	}
+	if (addr == 0)
+		return NULL;
+	claim_base = PAGE_ALIGN(claim_base + size);
+	return (void *)addr;
+}
+
+static void of_image_hdr(const void *hdr)
+{
+	const Elf64_Ehdr *elf64 = hdr;
+
+	if (elf64->e_ident[EI_CLASS] == ELFCLASS64) {
+		/*
+		 * Maintain a "magic" minimum address. This keeps some older
+		 * firmware platforms running.
+		 */
+		if (claim_base < PROG_START)
+			claim_base = PROG_START;
+	}
+}
+
+static void of_exit(void)
+{
+	call_prom("exit", 0, 0);
+}
+
+/*
+ * OF device tree routines
+ */
+static void *of_finddevice(const char *name)
+{
+	return (phandle) call_prom("finddevice", 1, 1, name);
+}
+
+static int of_getprop(const void *phandle, const char *name, void *buf,
+		const int buflen)
+{
+	return call_prom("getprop", 4, 1, phandle, name, buf, buflen);
+}
+
+static int of_setprop(const void *phandle, const char *name, const void *buf,
+		const int buflen)
+{
+	return call_prom("setprop", 4, 1, phandle, name, buf, buflen);
+}
+
+/*
+ * OF console routines
+ */
+static void *of_stdout_handle;
+
+static int of_console_open(void)
+{
+	void *devp;
+
+	if (((devp = finddevice("/chosen")) != NULL)
+			&& (getprop(devp, "stdout", &of_stdout_handle,
+				sizeof(of_stdout_handle))
+				== sizeof(of_stdout_handle)))
+		return 0;
+
+	return -1;
+}
+
+static void of_console_write(char *buf, int len)
+{
+	call_prom("write", 3, 1, of_stdout_handle, buf, len);
+}
+
+int platform_init(void *promptr)
+{
+	platform_ops.fixups = NULL;
+	platform_ops.image_hdr = of_image_hdr;
+	platform_ops.malloc = of_try_claim;
+	platform_ops.free = NULL;
+	platform_ops.exit = of_exit;
+
+	dt_ops.finddevice = of_finddevice;
+	dt_ops.getprop = of_getprop;
+	dt_ops.setprop = of_setprop;
+	dt_ops.translate_addr = NULL;
+
+	console_ops.open = of_console_open;
+	console_ops.write = of_console_write;
+	console_ops.edit_cmdline = NULL;
+	console_ops.close = NULL;
+	console_ops.data = NULL;
+
+	prom = (int (*)(void *))promptr;
+	return 0;
+}
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
new file mode 100644
index 00000000000..135eb4bb03b
--- /dev/null
+++ b/arch/powerpc/boot/ops.h
@@ -0,0 +1,100 @@
+/*
+ * Global definition of all the bootwrapper operations.
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2006 (c) MontaVista Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef _PPC_BOOT_OPS_H_
+#define _PPC_BOOT_OPS_H_
+
+#include "types.h"
+
+#define	COMMAND_LINE_SIZE	512
+#define	MAX_PATH_LEN		256
+#define	MAX_PROP_LEN		256 /* What should this be? */
+
+/* Platform specific operations */
+struct platform_ops {
+	void	(*fixups)(void);
+	void	(*image_hdr)(const void *);
+	void *	(*malloc)(u32 size);
+	void	(*free)(void *ptr, u32 size);
+	void	(*exit)(void);
+};
+extern struct platform_ops platform_ops;
+
+/* Device Tree operations */
+struct dt_ops {
+	void *	(*finddevice)(const char *name);
+	int	(*getprop)(const void *node, const char *name, void *buf,
+			const int buflen);
+	int	(*setprop)(const void *node, const char *name,
+			const void *buf, const int buflen);
+	u64	(*translate_addr)(const char *path, const u32 *in_addr,
+			const u32 addr_len);
+	unsigned long (*ft_addr)(void);
+};
+extern struct dt_ops dt_ops;
+
+/* Console operations */
+struct console_ops {
+	int	(*open)(void);
+	void	(*write)(char *buf, int len);
+	void	(*edit_cmdline)(char *buf, int len);
+	void	(*close)(void);
+	void	*data;
+};
+extern struct console_ops console_ops;
+
+/* Serial console operations */
+struct serial_console_data {
+	int		(*open)(void);
+	void		(*putc)(unsigned char c);
+	unsigned char	(*getc)(void);
+	u8		(*tstc)(void);
+	void		(*close)(void);
+};
+
+extern int platform_init(void *promptr);
+extern void simple_alloc_init(void);
+extern void ft_init(void *dt_blob);
+extern int serial_console_init(void);
+
+static inline void *finddevice(const char *name)
+{
+	return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
+}
+
+static inline int getprop(void *devp, const char *name, void *buf, int buflen)
+{
+	return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
+}
+
+static inline int setprop(void *devp, const char *name, void *buf, int buflen)
+{
+	return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
+}
+
+static inline void *malloc(u32 size)
+{
+	return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
+}
+
+static inline void free(void *ptr, u32 size)
+{
+	if (platform_ops.free)
+		platform_ops.free(ptr, size);
+}
+
+static inline void exit(void)
+{
+	if (platform_ops.exit)
+		platform_ops.exit();
+	for(;;);
+}
+
+#endif /* _PPC_BOOT_OPS_H_ */
diff --git a/arch/powerpc/boot/prom.h b/arch/powerpc/boot/prom.h
deleted file mode 100644
index a57b184c564..00000000000
--- a/arch/powerpc/boot/prom.h
+++ /dev/null
@@ -1,41 +0,0 @@
-#ifndef _PPC_BOOT_PROM_H_
-#define _PPC_BOOT_PROM_H_
-
-typedef void *phandle;
-typedef void *ihandle;
-
-extern int (*prom) (void *);
-extern phandle chosen_handle;
-extern ihandle stdout;
-
-int	call_prom(const char *service, int nargs, int nret, ...);
-int	call_prom_ret(const char *service, int nargs, int nret,
-		      unsigned int *rets, ...);
-
-extern int write(void *handle, void *ptr, int nb);
-extern void *claim(unsigned long virt, unsigned long size, unsigned long aln);
-
-static inline void exit(void)
-{
-	call_prom("exit", 0, 0);
-}
-
-static inline phandle finddevice(const char *name)
-{
-	return (phandle) call_prom("finddevice", 1, 1, name);
-}
-
-static inline int getprop(void *phandle, const char *name,
-			  void *buf, int buflen)
-{
-	return call_prom("getprop", 4, 1, phandle, name, buf, buflen);
-}
-
-
-static inline int setprop(void *phandle, const char *name,
-			  void *buf, int buflen)
-{
-	return call_prom("setprop", 4, 1, phandle, name, buf, buflen);
-}
-
-#endif				/* _PPC_BOOT_PROM_H_ */
diff --git a/arch/powerpc/boot/stdio.c b/arch/powerpc/boot/stdio.c
index b5aa522f8b7..6d5f6382e1c 100644
--- a/arch/powerpc/boot/stdio.c
+++ b/arch/powerpc/boot/stdio.c
@@ -10,7 +10,7 @@
 #include <stddef.h>
 #include "string.h"
 #include "stdio.h"
-#include "prom.h"
+#include "ops.h"
 
 size_t strnlen(const char * s, size_t count)
 {
@@ -320,6 +320,6 @@ printf(const char *fmt, ...)
 	va_start(args, fmt);
 	n = vsprintf(sprint_buf, fmt, args);
 	va_end(args);
-	write(stdout, sprint_buf, n);
+	console_ops.write(sprint_buf, n);
 	return n;
 }
diff --git a/arch/powerpc/boot/stdio.h b/arch/powerpc/boot/stdio.h
index eb9e16c87ae..73b8a91bfb3 100644
--- a/arch/powerpc/boot/stdio.h
+++ b/arch/powerpc/boot/stdio.h
@@ -1,8 +1,16 @@
 #ifndef _PPC_BOOT_STDIO_H_
 #define _PPC_BOOT_STDIO_H_
 
+#include <stdarg.h>
+
+#define	ENOMEM		12	/* Out of Memory */
+#define	EINVAL		22	/* Invalid argument */
+#define ENOSPC		28	/* No space left on device */
+
 extern int printf(const char *fmt, ...);
 
+#define fprintf(fmt, args...)	printf(args)
+
 extern int sprintf(char *buf, const char *fmt, ...);
 
 extern int vsprintf(char *buf, const char *fmt, va_list args);
diff --git a/arch/powerpc/boot/types.h b/arch/powerpc/boot/types.h
new file mode 100644
index 00000000000..79d26e70867
--- /dev/null
+++ b/arch/powerpc/boot/types.h
@@ -0,0 +1,23 @@
+#ifndef _TYPES_H_
+#define _TYPES_H_
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+typedef unsigned char		u8;
+typedef unsigned short		u16;
+typedef unsigned int		u32;
+typedef unsigned long long	u64;
+
+#define min(x,y) ({ \
+	typeof(x) _x = (x);	\
+	typeof(y) _y = (y);	\
+	(void) (&_x == &_y);	\
+	_x < _y ? _x : _y; })
+
+#define max(x,y) ({ \
+	typeof(x) _x = (x);	\
+	typeof(y) _y = (y);	\
+	(void) (&_x == &_y);	\
+	_x > _y ? _x : _y; })
+
+#endif /* _TYPES_H_ */
diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig
index 2860be106f4..62ba66091a1 100644
--- a/arch/powerpc/configs/maple_defconfig
+++ b/arch/powerpc/configs/maple_defconfig
@@ -496,7 +496,7 @@ CONFIG_E1000=y
 # CONFIG_SKY2 is not set
 # CONFIG_SK98LIN is not set
 # CONFIG_VIA_VELOCITY is not set
-# CONFIG_TIGON3 is not set
+CONFIG_TIGON3=y
 # CONFIG_BNX2 is not set
 # CONFIG_MV643XX_ETH is not set
 
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 7d32ad0194a..8b133afbdc2 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -16,7 +16,7 @@ obj-y				:= semaphore.o cputable.o ptrace.o syscalls.o \
 obj-y				+= vdso32/
 obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \
 				   signal_64.o ptrace32.o \
-				   paca.o cpu_setup_power4.o \
+				   paca.o cpu_setup_ppc970.o \
 				   firmware.o sysfs.o
 obj-$(CONFIG_PPC64)		+= vdso64/
 obj-$(CONFIG_ALTIVEC)		+= vecemu.o vector.o
@@ -51,7 +51,7 @@ extra-$(CONFIG_8xx)		:= head_8xx.o
 extra-y				+= vmlinux.lds
 
 obj-y				+= time.o prom.o traps.o setup-common.o \
-				   udbg.o misc.o
+				   udbg.o misc.o io.o
 obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o misc_32.o
 obj-$(CONFIG_PPC64)		+= misc_64.o dma_64.o iommu.o
 obj-$(CONFIG_PPC_MULTIPLATFORM)	+= prom_init.o
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 7ee84968087..d06f378597b 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -40,9 +40,10 @@
 #ifdef CONFIG_PPC64
 #include <asm/paca.h>
 #include <asm/lppaca.h>
-#include <asm/iseries/hv_lp_event.h>
 #include <asm/cache.h>
 #include <asm/compat.h>
+#include <asm/mmu.h>
+#include <asm/hvcall.h>
 #endif
 
 #define DEFINE(sym, val) \
@@ -136,11 +137,18 @@ int main(void)
 	DEFINE(PACA_STARTPURR, offsetof(struct paca_struct, startpurr));
 	DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time));
 	DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
+	DEFINE(PACA_SLBSHADOWPTR, offsetof(struct paca_struct, slb_shadow_ptr));
+	DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset));
 
+	DEFINE(SLBSHADOW_STACKVSID,
+	       offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].vsid));
+	DEFINE(SLBSHADOW_STACKESID,
+	       offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].esid));
 	DEFINE(LPPACASRR0, offsetof(struct lppaca, saved_srr0));
 	DEFINE(LPPACASRR1, offsetof(struct lppaca, saved_srr1));
 	DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int));
 	DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int));
+	DEFINE(SLBSHADOW_SAVEAREA, offsetof(struct slb_shadow, save_area));
 #endif /* CONFIG_PPC64 */
 
 	/* RTAS */
@@ -159,6 +167,12 @@ int main(void)
 	/* Create extra stack space for SRR0 and SRR1 when calling prom/rtas. */
 	DEFINE(PROM_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
 	DEFINE(RTAS_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
+
+	/* hcall statistics */
+	DEFINE(HCALL_STAT_SIZE, sizeof(struct hcall_stats));
+	DEFINE(HCALL_STAT_CALLS, offsetof(struct hcall_stats, num_calls));
+	DEFINE(HCALL_STAT_TB, offsetof(struct hcall_stats, tb_total));
+	DEFINE(HCALL_STAT_PURR, offsetof(struct hcall_stats, purr_total));
 #endif /* CONFIG_PPC64 */
 	DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
 	DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
@@ -240,6 +254,7 @@ int main(void)
 	DEFINE(CPU_SPEC_PVR_VALUE, offsetof(struct cpu_spec, pvr_value));
 	DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
 	DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
+	DEFINE(CPU_SPEC_RESTORE, offsetof(struct cpu_spec, cpu_restore));
 
 #ifndef CONFIG_PPC64
 	DEFINE(pbe_address, offsetof(struct pbe, address));
diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index f4e5e14ee2b..995fcef156f 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -158,35 +158,35 @@ int btext_initialize(struct device_node *np)
 {
 	unsigned int width, height, depth, pitch;
 	unsigned long address = 0;
-	u32 *prop;
+	const u32 *prop;
 
-	prop = (u32 *)get_property(np, "linux,bootx-width", NULL);
+	prop = get_property(np, "linux,bootx-width", NULL);
 	if (prop == NULL)
-		prop = (u32 *)get_property(np, "width", NULL);
+		prop = get_property(np, "width", NULL);
 	if (prop == NULL)
 		return -EINVAL;
 	width = *prop;
-	prop = (u32 *)get_property(np, "linux,bootx-height", NULL);
+	prop = get_property(np, "linux,bootx-height", NULL);
 	if (prop == NULL)
-		prop = (u32 *)get_property(np, "height", NULL);
+		prop = get_property(np, "height", NULL);
 	if (prop == NULL)
 		return -EINVAL;
 	height = *prop;
-	prop = (u32 *)get_property(np, "linux,bootx-depth", NULL);
+	prop = get_property(np, "linux,bootx-depth", NULL);
 	if (prop == NULL)
-		prop = (u32 *)get_property(np, "depth", NULL);
+		prop = get_property(np, "depth", NULL);
 	if (prop == NULL)
 		return -EINVAL;
 	depth = *prop;
 	pitch = width * ((depth + 7) / 8);
-	prop = (u32 *)get_property(np, "linux,bootx-linebytes", NULL);
+	prop = get_property(np, "linux,bootx-linebytes", NULL);
 	if (prop == NULL)
-		prop = (u32 *)get_property(np, "linebytes", NULL);
+		prop = get_property(np, "linebytes", NULL);
 	if (prop)
 		pitch = *prop;
 	if (pitch == 1)
 		pitch = 0x1000;
-	prop = (u32 *)get_property(np, "address", NULL);
+	prop = get_property(np, "address", NULL);
 	if (prop)
 		address = *prop;
 
@@ -214,11 +214,11 @@ int btext_initialize(struct device_node *np)
 
 int __init btext_find_display(int allow_nonstdout)
 {
-	char *name;
+	const char *name;
 	struct device_node *np = NULL; 
 	int rc = -ENODEV;
 
-	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+	name = get_property(of_chosen, "linux,stdout-path", NULL);
 	if (name != NULL) {
 		np = of_find_node_by_path(name);
 		if (np != NULL) {
diff --git a/arch/powerpc/kernel/cpu_setup_power4.S b/arch/powerpc/kernel/cpu_setup_ppc970.S
index 76e97aa71c4..652594891d5 100644
--- a/arch/powerpc/kernel/cpu_setup_power4.S
+++ b/arch/powerpc/kernel/cpu_setup_ppc970.S
@@ -16,27 +16,12 @@
 #include <asm/asm-offsets.h>
 #include <asm/cache.h>
 
-_GLOBAL(__970_cpu_preinit)
-	/*
-	 * Do nothing if not running in HV mode
-	 */
+_GLOBAL(__cpu_preinit_ppc970)
+	/* Do nothing if not running in HV mode */
 	mfmsr	r0
 	rldicl.	r0,r0,4,63
 	beqlr
 
-	/*
-	 * Deal only with PPC970 and PPC970FX.
-	 */
-	mfspr	r0,SPRN_PVR
-	srwi	r0,r0,16
-	cmpwi	r0,0x39
-	beq	1f
-	cmpwi	r0,0x3c
-	beq	1f
-	cmpwi	r0,0x44
-	bnelr
-1:
-
 	/* Make sure HID4:rm_ci is off before MMU is turned off, that large
 	 * pages are enabled with HID4:61 and clear HID5:DCBZ_size and
 	 * HID5:DCBZ32_ill
@@ -72,23 +57,6 @@ _GLOBAL(__970_cpu_preinit)
 	isync
 	blr
 
-_GLOBAL(__setup_cpu_ppc970)
-	mfspr	r0,SPRN_HID0
-	li	r11,5			/* clear DOZE and SLEEP */
-	rldimi	r0,r11,52,8		/* set NAP and DPM */
-	li	r11,0
-	rldimi	r0,r11,32,31		/* clear EN_ATTN */
-	mtspr	SPRN_HID0,r0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	sync
-	isync
-	blr
-
 /* Definitions for the table use to save CPU states */
 #define CS_HID0		0
 #define CS_HID1		8
@@ -103,33 +71,30 @@ cpu_state_storage:
 	.balign	L1_CACHE_BYTES,0
 	.text
 
-/* Called in normal context to backup CPU 0 state. This
- * does not include cache settings. This function is also
- * called for machine sleep. This does not include the MMU
- * setup, BATs, etc... but rather the "special" registers
- * like HID0, HID1, HID4, etc...
- */
-_GLOBAL(__save_cpu_setup)
-	/* Some CR fields are volatile, we back it up all */
-	mfcr	r7
-
-	/* Get storage ptr */
-	LOAD_REG_IMMEDIATE(r5,cpu_state_storage)
 
-	/* We only deal with 970 for now */
-	mfspr	r0,SPRN_PVR
-	srwi	r0,r0,16
-	cmpwi	r0,0x39
-	beq	1f
-	cmpwi	r0,0x3c
-	beq	1f
-	cmpwi	r0,0x44
-	bne	2f
-
-1:	/* skip if not running in HV mode */
+_GLOBAL(__setup_cpu_ppc970)
+	/* Do nothing if not running in HV mode */
 	mfmsr	r0
 	rldicl.	r0,r0,4,63
-	beq	2f
+	beqlr
+
+	mfspr	r0,SPRN_HID0
+	li	r11,5			/* clear DOZE and SLEEP */
+	rldimi	r0,r11,52,8		/* set NAP and DPM */
+	li	r11,0
+	rldimi	r0,r11,32,31		/* clear EN_ATTN */
+	mtspr	SPRN_HID0,r0
+	mfspr	r0,SPRN_HID0
+	mfspr	r0,SPRN_HID0
+	mfspr	r0,SPRN_HID0
+	mfspr	r0,SPRN_HID0
+	mfspr	r0,SPRN_HID0
+	mfspr	r0,SPRN_HID0
+	sync
+	isync
+
+	/* Save away cpu state */
+	LOAD_REG_IMMEDIATE(r5,cpu_state_storage)
 
 	/* Save HID0,1,4 and 5 */
 	mfspr	r3,SPRN_HID0
@@ -141,35 +106,19 @@ _GLOBAL(__save_cpu_setup)
 	mfspr	r3,SPRN_HID5
 	std	r3,CS_HID5(r5)
 
-2:
-	mtcr	r7
 	blr
 
 /* Called with no MMU context (typically MSR:IR/DR off) to
  * restore CPU state as backed up by the previous
  * function. This does not include cache setting
  */
-_GLOBAL(__restore_cpu_setup)
-	/* Get storage ptr (FIXME when using anton reloc as we
-	 * are running with translation disabled here
-	 */
-	LOAD_REG_IMMEDIATE(r5,cpu_state_storage)
-
-	/* We only deal with 970 for now */
-	mfspr	r0,SPRN_PVR
-	srwi	r0,r0,16
-	cmpwi	r0,0x39
-	beq	1f
-	cmpwi	r0,0x3c
-	beq	1f
-	cmpwi	r0,0x44
-	bnelr
-
-1:	/* skip if not running in HV mode */
+_GLOBAL(__restore_cpu_ppc970)
+	/* Do nothing if not running in HV mode */
 	mfmsr	r0
 	rldicl.	r0,r0,4,63
 	beqlr
 
+	LOAD_REG_IMMEDIATE(r5,cpu_state_storage)
 	/* Before accessing memory, we make sure rm_ci is clear */
 	li	r0,0
 	mfspr	r3,SPRN_HID4
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 272e43622fd..190a57e2076 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -39,7 +39,10 @@ extern void __setup_cpu_7400(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_7410(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_745x(unsigned long offset, struct cpu_spec* spec);
 #endif /* CONFIG_PPC32 */
+#ifdef CONFIG_PPC64
 extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec);
+extern void __restore_cpu_ppc970(void);
+#endif /* CONFIG_PPC64 */
 
 /* This table only contains "desktop" CPUs, it need to be filled with embedded
  * ones as well...
@@ -55,6 +58,9 @@ extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec);
 #define COMMON_USER_POWER6	(COMMON_USER_PPC64 | PPC_FEATURE_ARCH_2_05 |\
 				 PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP | \
 				 PPC_FEATURE_TRUE_LE)
+#define COMMON_USER_PA6T	(COMMON_USER_PPC64 | PPC_FEATURE_PA6T |\
+				 PPC_FEATURE_TRUE_LE | \
+				 PPC_FEATURE_HAS_ALTIVEC_COMP)
 #define COMMON_USER_BOOKE	(PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
 				 PPC_FEATURE_BOOKE)
 
@@ -184,6 +190,7 @@ struct cpu_spec	cpu_specs[] = {
 		.dcache_bsize		= 128,
 		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_ppc970,
+		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.platform		= "ppc970",
@@ -199,6 +206,7 @@ struct cpu_spec	cpu_specs[] = {
 		.dcache_bsize		= 128,
 		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_ppc970,
+		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.platform		= "ppc970",
@@ -214,6 +222,7 @@ struct cpu_spec	cpu_specs[] = {
 		.dcache_bsize		= 128,
 		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_ppc970,
+		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.platform		= "ppc970",
@@ -280,6 +289,17 @@ struct cpu_spec	cpu_specs[] = {
 		.dcache_bsize		= 128,
 		.platform		= "ppc-cell-be",
 	},
+	{	/* PA Semi PA6T */
+		.pvr_mask		= 0x7fff0000,
+		.pvr_value		= 0x00900000,
+		.cpu_name		= "PA6T",
+		.cpu_features		= CPU_FTRS_PA6T,
+		.cpu_user_features	= COMMON_USER_PA6T,
+		.icache_bsize		= 64,
+		.dcache_bsize		= 64,
+		.num_pmcs		= 6,
+		.platform		= "pa6t",
+	},
 	{	/* default match */
 		.pvr_mask		= 0x00000000,
 		.pvr_value		= 0x00000000,
@@ -929,6 +949,7 @@ struct cpu_spec	cpu_specs[] = {
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.platform		= "ppc405",
 	},
 	{	/* 405EP */
 		.pvr_mask		= 0xffff0000,
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 371973be8d7..2f6f5a7bc69 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -80,7 +80,7 @@ static int __init parse_savemaxmem(char *p)
 }
 __setup("savemaxmem=", parse_savemaxmem);
 
-/*
+/**
  * copy_oldmem_page - copy one page from "oldmem"
  * @pfn: page frame number to be copied
  * @buf: target memory address for the copy; this can be in kernel address
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c
index 36aaa7663f0..6c168f6ea14 100644
--- a/arch/powerpc/kernel/dma_64.c
+++ b/arch/powerpc/kernel/dma_64.c
@@ -35,10 +35,9 @@ int dma_supported(struct device *dev, u64 mask)
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		return dma_ops->dma_supported(dev, mask);
-	BUG();
-	return 0;
+	BUG_ON(!dma_ops);
+
+	return dma_ops->dma_supported(dev, mask);
 }
 EXPORT_SYMBOL(dma_supported);
 
@@ -66,10 +65,9 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
-	BUG();
-	return NULL;
+	BUG_ON(!dma_ops);
+
+	return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
 }
 EXPORT_SYMBOL(dma_alloc_coherent);
 
@@ -78,10 +76,9 @@ void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
-	else
-		BUG();
+	BUG_ON(!dma_ops);
+
+	dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
 }
 EXPORT_SYMBOL(dma_free_coherent);
 
@@ -90,10 +87,9 @@ dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		return dma_ops->map_single(dev, cpu_addr, size, direction);
-	BUG();
-	return (dma_addr_t)0;
+	BUG_ON(!dma_ops);
+
+	return dma_ops->map_single(dev, cpu_addr, size, direction);
 }
 EXPORT_SYMBOL(dma_map_single);
 
@@ -102,10 +98,9 @@ void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		dma_ops->unmap_single(dev, dma_addr, size, direction);
-	else
-		BUG();
+	BUG_ON(!dma_ops);
+
+	dma_ops->unmap_single(dev, dma_addr, size, direction);
 }
 EXPORT_SYMBOL(dma_unmap_single);
 
@@ -115,11 +110,10 @@ dma_addr_t dma_map_page(struct device *dev, struct page *page,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		return dma_ops->map_single(dev,
-				(page_address(page) + offset), size, direction);
-	BUG();
-	return (dma_addr_t)0;
+	BUG_ON(!dma_ops);
+
+	return dma_ops->map_single(dev, page_address(page) + offset, size,
+			direction);
 }
 EXPORT_SYMBOL(dma_map_page);
 
@@ -128,10 +122,9 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		dma_ops->unmap_single(dev, dma_address, size, direction);
-	else
-		BUG();
+	BUG_ON(!dma_ops);
+
+	dma_ops->unmap_single(dev, dma_address, size, direction);
 }
 EXPORT_SYMBOL(dma_unmap_page);
 
@@ -140,10 +133,9 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		return dma_ops->map_sg(dev, sg, nents, direction);
-	BUG();
-	return 0;
+	BUG_ON(!dma_ops);
+
+	return dma_ops->map_sg(dev, sg, nents, direction);
 }
 EXPORT_SYMBOL(dma_map_sg);
 
@@ -152,9 +144,8 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 
-	if (dma_ops)
-		dma_ops->unmap_sg(dev, sg, nhwentries, direction);
-	else
-		BUG();
+	BUG_ON(!dma_ops);
+
+	dma_ops->unmap_sg(dev, sg, nhwentries, direction);
 }
 EXPORT_SYMBOL(dma_unmap_sg);
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 54d9f5cdaab..2cd872b5283 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -375,6 +375,14 @@ BEGIN_FTR_SECTION
 	ld	r7,KSP_VSID(r4)	/* Get new stack's VSID */
 	oris	r0,r6,(SLB_ESID_V)@h
 	ori	r0,r0,(SLB_NUM_BOLTED-1)@l
+
+	/* Update the last bolted SLB */
+	ld	r9,PACA_SLBSHADOWPTR(r13)
+	li	r12,0
+	std	r12,SLBSHADOW_STACKESID(r9) /* Clear ESID */
+	std	r7,SLBSHADOW_STACKVSID(r9)  /* Save VSID */
+	std	r0,SLBSHADOW_STACKESID(r9)  /* Save ESID */
+
 	slbie	r6
 	slbie	r6		/* Workaround POWER5 < DD2.1 issue */
 	slbmte	r7,r0
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 6ff3cf50608..3065b472b95 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -132,7 +132,7 @@ _GLOBAL(__secondary_hold)
 	bne	100b
 
 #if defined(CONFIG_SMP) || defined(CONFIG_KEXEC)
-	LOAD_REG_IMMEDIATE(r4, .pSeries_secondary_smp_init)
+	LOAD_REG_IMMEDIATE(r4, .generic_secondary_smp_init)
 	mtctr	r4
 	mr	r3,r24
 	bctr
@@ -1484,19 +1484,17 @@ fwnmi_data_area:
         . = 0x8000
 
 /*
- * On pSeries, secondary processors spin in the following code.
+ * On pSeries and most other platforms, secondary processors spin
+ * in the following code.
  * At entry, r3 = this processor's number (physical cpu id)
  */
-_GLOBAL(pSeries_secondary_smp_init)
+_GLOBAL(generic_secondary_smp_init)
 	mr	r24,r3
 	
 	/* turn on 64-bit mode */
 	bl	.enable_64b_mode
 	isync
 
-	/* Copy some CPU settings from CPU 0 */
-	bl	.__restore_cpu_setup
-
 	/* Set up a paca value for this processor. Since we have the
 	 * physical cpu id in r24, we need to search the pacas to find
 	 * which logical id maps to our physical one.
@@ -1522,15 +1520,28 @@ _GLOBAL(pSeries_secondary_smp_init)
 					/* start.			 */
 	sync
 
-	/* Create a temp kernel stack for use before relocation is on.	*/
+#ifndef CONFIG_SMP
+	b	3b			/* Never go on non-SMP		 */
+#else
+	cmpwi	0,r23,0
+	beq	3b			/* Loop until told to go	 */
+
+	/* See if we need to call a cpu state restore handler */
+	LOAD_REG_IMMEDIATE(r23, cur_cpu_spec)
+	ld	r23,0(r23)
+	ld	r23,CPU_SPEC_RESTORE(r23)
+	cmpdi	0,r23,0
+	beq	4f
+	ld	r23,0(r23)
+	mtctr	r23
+	bctrl
+
+4:	/* Create a temp kernel stack for use before relocation is on.	*/
 	ld	r1,PACAEMERGSP(r13)
 	subi	r1,r1,STACK_FRAME_OVERHEAD
 
-	cmpwi	0,r23,0
-#ifdef CONFIG_SMP
-	bne	.__secondary_start
+	b	.__secondary_start
 #endif
-	b 	3b			/* Loop until told to go	 */
 
 #ifdef CONFIG_PPC_ISERIES
 _STATIC(__start_initialization_iSeries)
@@ -1611,7 +1622,16 @@ _GLOBAL(__start_initialization_multiplatform)
 	bl	.enable_64b_mode
 
 	/* Setup some critical 970 SPRs before switching MMU off */
-	bl	.__970_cpu_preinit
+	mfspr	r0,SPRN_PVR
+	srwi	r0,r0,16
+	cmpwi	r0,0x39		/* 970 */
+	beq	1f
+	cmpwi	r0,0x3c		/* 970FX */
+	beq	1f
+	cmpwi	r0,0x44		/* 970MP */
+	bne	2f
+1:	bl	.__cpu_preinit_ppc970
+2:
 
 	/* Switch off MMU if not already */
 	LOAD_REG_IMMEDIATE(r4, .__after_prom_start - KERNELBASE)
@@ -1728,7 +1748,7 @@ _STATIC(__after_prom_start)
 _GLOBAL(copy_and_flush)
 	addi	r5,r5,-8
 	addi	r6,r6,-8
-4:	li	r0,16			/* Use the least common		*/
+4:	li	r0,8			/* Use the smallest common	*/
 					/* denominator cache line	*/
 					/* size.  This results in	*/
 					/* extra cache line flushes	*/
@@ -1782,7 +1802,7 @@ _GLOBAL(pmac_secondary_start)
 	isync
 
 	/* Copy some CPU settings from CPU 0 */
-	bl	.__restore_cpu_setup
+	bl	.__restore_cpu_ppc970
 
 	/* pSeries do that early though I don't think we really need it */
 	mfmsr	r3
@@ -1932,12 +1952,6 @@ _STATIC(start_here_multiplatform)
 	mr	r5,r26
 	bl	.identify_cpu
 
-	/* Save some low level config HIDs of CPU0 to be copied to
-	 * other CPUs later on, or used for suspend/resume
-	 */
-	bl	.__save_cpu_setup
-	sync
-
 	/* Do very early kernel initializations, including initial hash table,
 	 * stab and slb setup before we turn on relocation.	*/
 
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 68e5ab0443d..124dbcba94a 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -167,7 +167,7 @@ static DEVICE_ATTR(name, S_IRUSR | S_IRGRP | S_IROTH, ibmebusdev_show_name,
 		   NULL);
 
 static struct ibmebus_dev* __devinit ibmebus_register_device_common(
-	struct ibmebus_dev *dev, char *name)
+	struct ibmebus_dev *dev, const char *name)
 {
 	int err = 0;
 
@@ -194,10 +194,10 @@ static struct ibmebus_dev* __devinit ibmebus_register_device_node(
 	struct device_node *dn)
 {
 	struct ibmebus_dev *dev;
-	char *loc_code;
+	const char *loc_code;
 	int length;
 
-	loc_code = (char *)get_property(dn, "ibm,loc-code", NULL);
+	loc_code = get_property(dn, "ibm,loc-code", NULL);
 	if (!loc_code) {
                 printk(KERN_WARNING "%s: node %s missing 'ibm,loc-code'\n",
 		       __FUNCTION__, dn->name ? dn->name : "<unknown>");
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
new file mode 100644
index 00000000000..e98180686b3
--- /dev/null
+++ b/arch/powerpc/kernel/io.c
@@ -0,0 +1,131 @@
+/*
+ * I/O string operations
+ *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *    Copyright (C) 2006 IBM Corporation
+ *
+ * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras.
+ *
+ * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
+ * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
+ *
+ * Rewritten in C by Stephen Rothwell.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/compiler.h>
+#include <linux/module.h>
+
+#include <asm/io.h>
+#include <asm/firmware.h>
+#include <asm/bug.h>
+
+void _insb(volatile u8 __iomem *port, void *buf, long count)
+{
+	u8 *tbuf = buf;
+	u8 tmp;
+
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	if (unlikely(count <= 0))
+		return;
+	asm volatile("sync");
+	do {
+		tmp = *port;
+		asm volatile("eieio");
+		*tbuf++ = tmp;
+	} while (--count != 0);
+	asm volatile("twi 0,%0,0; isync" : : "r" (tmp));
+}
+EXPORT_SYMBOL(_insb);
+
+void _outsb(volatile u8 __iomem *port, const void *buf, long count)
+{
+	const u8 *tbuf = buf;
+
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	if (unlikely(count <= 0))
+		return;
+	asm volatile("sync");
+	do {
+		*port = *tbuf++;
+	} while (--count != 0);
+	asm volatile("sync");
+}
+EXPORT_SYMBOL(_outsb);
+
+void _insw_ns(volatile u16 __iomem *port, void *buf, long count)
+{
+	u16 *tbuf = buf;
+	u16 tmp;
+
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	if (unlikely(count <= 0))
+		return;
+	asm volatile("sync");
+	do {
+		tmp = *port;
+		asm volatile("eieio");
+		*tbuf++ = tmp;
+	} while (--count != 0);
+	asm volatile("twi 0,%0,0; isync" : : "r" (tmp));
+}
+EXPORT_SYMBOL(_insw_ns);
+
+void _outsw_ns(volatile u16 __iomem *port, const void *buf, long count)
+{
+	const u16 *tbuf = buf;
+
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	if (unlikely(count <= 0))
+		return;
+	asm volatile("sync");
+	do {
+		*port = *tbuf++;
+	} while (--count != 0);
+	asm volatile("sync");
+}
+EXPORT_SYMBOL(_outsw_ns);
+
+void _insl_ns(volatile u32 __iomem *port, void *buf, long count)
+{
+	u32 *tbuf = buf;
+	u32 tmp;
+
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	if (unlikely(count <= 0))
+		return;
+	asm volatile("sync");
+	do {
+		tmp = *port;
+		asm volatile("eieio");
+		*tbuf++ = tmp;
+	} while (--count != 0);
+	asm volatile("twi 0,%0,0; isync" : : "r" (tmp));
+}
+EXPORT_SYMBOL(_insl_ns);
+
+void _outsl_ns(volatile u32 __iomem *port, const void *buf, long count)
+{
+	const u32 *tbuf = buf;
+
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	if (unlikely(count <= 0))
+		return;
+	asm volatile("sync");
+	do {
+		*port = *tbuf++;
+	} while (--count != 0);
+	asm volatile("sync");
+}
+EXPORT_SYMBOL(_outsl_ns);
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 12c5971d656..b4432332341 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -52,6 +52,7 @@
 #include <linux/radix-tree.h>
 #include <linux/mutex.h>
 #include <linux/bootmem.h>
+#include <linux/pci.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -875,12 +876,14 @@ int pci_enable_msi(struct pci_dev * pdev)
 	else
 		return -1;
 }
+EXPORT_SYMBOL(pci_enable_msi);
 
 void pci_disable_msi(struct pci_dev * pdev)
 {
 	if (ppc_md.disable_msi)
 		ppc_md.disable_msi(pdev);
 }
+EXPORT_SYMBOL(pci_disable_msi);
 
 void pci_scan_msi_device(struct pci_dev *dev) {}
 int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec) {return -1;}
@@ -888,6 +891,8 @@ void pci_disable_msix(struct pci_dev *dev) {}
 void msi_remove_pci_irq_vectors(struct pci_dev *dev) {}
 void disable_msi_mode(struct pci_dev *dev, int pos, int type) {}
 void pci_no_msi(void) {}
+EXPORT_SYMBOL(pci_enable_msix);
+EXPORT_SYMBOL(pci_disable_msix);
 
 #endif
 
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 40a39291861..5e6ddfa474c 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -39,16 +39,17 @@ static int __init add_legacy_port(struct device_node *np, int want_index,
 				  phys_addr_t taddr, unsigned long irq,
 				  upf_t flags, int irq_check_parent)
 {
-	u32 *clk, *spd, clock = BASE_BAUD * 16;
+	const u32 *clk, *spd;
+	u32 clock = BASE_BAUD * 16;
 	int index;
 
 	/* get clock freq. if present */
-	clk = (u32 *)get_property(np, "clock-frequency", NULL);
+	clk = get_property(np, "clock-frequency", NULL);
 	if (clk && *clk)
 		clock = *clk;
 
 	/* get default speed if present */
-	spd = (u32 *)get_property(np, "current-speed", NULL);
+	spd = get_property(np, "current-speed", NULL);
 
 	/* If we have a location index, then try to use it */
 	if (want_index >= 0 && want_index < MAX_LEGACY_SERIAL_PORTS)
@@ -113,7 +114,7 @@ static int __init add_legacy_soc_port(struct device_node *np,
 				      struct device_node *soc_dev)
 {
 	u64 addr;
-	u32 *addrp;
+	const u32 *addrp;
 	upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
 	struct device_node *tsi = of_get_parent(np);
 
@@ -144,15 +145,15 @@ static int __init add_legacy_soc_port(struct device_node *np,
 static int __init add_legacy_isa_port(struct device_node *np,
 				      struct device_node *isa_brg)
 {
-	u32 *reg;
-	char *typep;
+	const u32 *reg;
+	const char *typep;
 	int index = -1;
 	u64 taddr;
 
 	DBG(" -> add_legacy_isa_port(%s)\n", np->full_name);
 
 	/* Get the ISA port number */
-	reg = (u32 *)get_property(np, "reg", NULL);
+	reg = get_property(np, "reg", NULL);
 	if (reg == NULL)
 		return -1;
 
@@ -163,7 +164,7 @@ static int __init add_legacy_isa_port(struct device_node *np,
 	/* Now look for an "ibm,aix-loc" property that gives us ordering
 	 * if any...
 	 */
-	typep = (char *)get_property(np, "ibm,aix-loc", NULL);
+	typep = get_property(np, "ibm,aix-loc", NULL);
 
 	/* If we have a location index, then use it */
 	if (typep && *typep == 'S')
@@ -188,7 +189,7 @@ static int __init add_legacy_pci_port(struct device_node *np,
 				      struct device_node *pci_dev)
 {
 	u64 addr, base;
-	u32 *addrp;
+	const u32 *addrp;
 	unsigned int flags;
 	int iotype, index = -1, lindex = 0;
 
@@ -227,7 +228,7 @@ static int __init add_legacy_pci_port(struct device_node *np,
 	 * we get to their "reg" property
 	 */
 	if (np != pci_dev) {
-		u32 *reg = (u32 *)get_property(np, "reg", NULL);
+		const u32 *reg = get_property(np, "reg", NULL);
 		if (reg && (*reg < 4))
 			index = lindex = *reg;
 	}
@@ -285,13 +286,13 @@ static void __init setup_legacy_serial_console(int console)
 void __init find_legacy_serial_ports(void)
 {
 	struct device_node *np, *stdout = NULL;
-	char *path;
+	const char *path;
 	int index;
 
 	DBG(" -> find_legacy_serial_port()\n");
 
 	/* Now find out if one of these is out firmware console */
-	path = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+	path = get_property(of_chosen, "linux,stdout-path", NULL);
 	if (path != NULL) {
 		stdout = of_find_node_by_path(path);
 		if (stdout)
@@ -491,8 +492,8 @@ static int __init check_legacy_serial_console(void)
 {
 	struct device_node *prom_stdout = NULL;
 	int speed = 0, offset = 0;
-	char *name;
-	u32 *spd;
+	const char *name;
+	const u32 *spd;
 
 	DBG(" -> check_legacy_serial_console()\n");
 
@@ -513,7 +514,7 @@ static int __init check_legacy_serial_console(void)
 	}
 	/* We are getting a weird phandle from OF ... */
 	/* ... So use the full path instead */
-	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+	name = get_property(of_chosen, "linux,stdout-path", NULL);
 	if (name == NULL) {
 		DBG(" no linux,stdout-path !\n");
 		return -ENODEV;
@@ -525,12 +526,12 @@ static int __init check_legacy_serial_console(void)
 	}
 	DBG("stdout is %s\n", prom_stdout->full_name);
 
-	name = (char *)get_property(prom_stdout, "name", NULL);
+	name = get_property(prom_stdout, "name", NULL);
 	if (!name) {
 		DBG(" stdout package has no name !\n");
 		goto not_found;
 	}
-	spd = (u32 *)get_property(prom_stdout, "current-speed", NULL);
+	spd = get_property(prom_stdout, "current-speed", NULL);
 	if (spd)
 		speed = *spd;
 
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 23f34daa044..41c05dcd68f 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -32,7 +32,6 @@
 #include <asm/rtas.h>
 #include <asm/system.h>
 #include <asm/time.h>
-#include <asm/iseries/it_exp_vpd_panel.h>
 #include <asm/prom.h>
 #include <asm/vdso_datapage.h>
 
@@ -183,8 +182,14 @@ static unsigned int h_get_ppp(unsigned long *entitled,
 			      unsigned long *resource)
 {
 	unsigned long rc;
-	rc = plpar_hcall_4out(H_GET_PPP, 0, 0, 0, 0, entitled, unallocated,
-			      aggregation, resource);
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_GET_PPP, retbuf);
+
+	*entitled = retbuf[0];
+	*unallocated = retbuf[1];
+	*aggregation = retbuf[2];
+	*resource = retbuf[3];
 
 	log_plpar_hcall_return(rc, "H_GET_PPP");
 
@@ -194,8 +199,12 @@ static unsigned int h_get_ppp(unsigned long *entitled,
 static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
 {
 	unsigned long rc;
-	unsigned long dummy;
-	rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_PIC, retbuf);
+
+	*pool_idle_time = retbuf[0];
+	*num_procs = retbuf[1];
 
 	if (rc != H_AUTHORITY)
 		log_plpar_hcall_return(rc, "H_PIC");
@@ -310,12 +319,11 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
 	int partition_potential_processors;
 	int partition_active_processors;
 	struct device_node *rtas_node;
-	int *lrdrp = NULL;
+	const int *lrdrp = NULL;
 
 	rtas_node = find_path_device("/rtas");
 	if (rtas_node)
-		lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity",
-		                            NULL);
+		lrdrp = get_property(rtas_node, "ibm,lrdr-capacity", NULL);
 
 	if (lrdrp == NULL) {
 		partition_potential_processors = vdso_data->processorCount;
@@ -520,7 +528,8 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	const char *model = "";
 	const char *system_id = "";
 	const char *tmp;
-	unsigned int *lp_index_ptr, lp_index = 0;
+	const unsigned int *lp_index_ptr;
+	unsigned int lp_index = 0;
 
 	seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
 
@@ -540,8 +549,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
 			if (firmware_has_feature(FW_FEATURE_ISERIES))
 				system_id += 4;
 		}
-		lp_index_ptr = (unsigned int *)
-			get_property(rootdn, "ibm,partition-no", NULL);
+		lp_index_ptr = get_property(rootdn, "ibm,partition-no", NULL);
 		if (lp_index_ptr)
 			lp_index = *lp_index_ptr;
 	}
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index be58985c768..a24b09c2771 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -31,8 +31,8 @@ int default_machine_kexec_prepare(struct kimage *image)
 	unsigned long begin, end;	/* limits of segment */
 	unsigned long low, high;	/* limits of blocked memory range */
 	struct device_node *node;
-	unsigned long *basep;
-	unsigned int *sizep;
+	const unsigned long *basep;
+	const unsigned int *sizep;
 
 	if (!ppc_md.hpte_clear_all)
 		return -ENOENT;
@@ -72,10 +72,8 @@ int default_machine_kexec_prepare(struct kimage *image)
 	/* We also should not overwrite the tce tables */
 	for (node = of_find_node_by_type(NULL, "pci"); node != NULL;
 			node = of_find_node_by_type(node, "pci")) {
-		basep = (unsigned long *)get_property(node, "linux,tce-base",
-							NULL);
-		sizep = (unsigned int *)get_property(node, "linux,tce-size",
-							NULL);
+		basep = get_property(node, "linux,tce-base", NULL);
+		sizep = get_property(node, "linux,tce-size", NULL);
 		if (basep == NULL || sizep == NULL)
 			continue;
 
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
index f770805f121..330c9dc7db8 100644
--- a/arch/powerpc/kernel/misc.S
+++ b/arch/powerpc/kernel/misc.S
@@ -43,162 +43,3 @@ _GLOBAL(add_reloc_offset)
 	add	r3,r3,r5
 	mtlr	r0
 	blr
-
-/*
- * I/O string operations
- *
- * insb(port, buf, len)
- * outsb(port, buf, len)
- * insw(port, buf, len)
- * outsw(port, buf, len)
- * insl(port, buf, len)
- * outsl(port, buf, len)
- * insw_ns(port, buf, len)
- * outsw_ns(port, buf, len)
- * insl_ns(port, buf, len)
- * outsl_ns(port, buf, len)
- *
- * The *_ns versions don't do byte-swapping.
- */
-_GLOBAL(_insb)
-	sync
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,1
-	blelr-
-00:	lbz	r5,0(r3)
-	eieio
-	stbu	r5,1(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsb)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,1
-	blelr-
-	sync
-00:	lbzu	r5,1(r4)
-	stb	r5,0(r3)
-	bdnz	00b
-	sync
-	blr
-
-_GLOBAL(_insw)
-	sync
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhbrx	r5,0,r3
-	eieio
-	sthu	r5,2(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsw)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-	sync
-00:	lhzu	r5,2(r4)
-	sthbrx	r5,0,r3
-	bdnz	00b
-	sync
-	blr
-
-_GLOBAL(_insl)
-	sync
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwbrx	r5,0,r3
-	eieio
-	stwu	r5,4(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsl)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-	sync
-00:	lwzu	r5,4(r4)
-	stwbrx	r5,0,r3
-	bdnz	00b
-	sync
-	blr
-
-#ifdef CONFIG_PPC32
-_GLOBAL(__ide_mm_insw)
-#endif
-_GLOBAL(_insw_ns)
-	sync
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhz	r5,0(r3)
-	eieio
-	sthu	r5,2(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-#ifdef CONFIG_PPC32
-_GLOBAL(__ide_mm_outsw)
-#endif
-_GLOBAL(_outsw_ns)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-	sync
-00:	lhzu	r5,2(r4)
-	sth	r5,0(r3)
-	bdnz	00b
-	sync
-	blr
-
-#ifdef CONFIG_PPC32
-_GLOBAL(__ide_mm_insl)
-#endif
-_GLOBAL(_insl_ns)
-	sync
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwz	r5,0(r3)
-	eieio
-	stwu	r5,4(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-#ifdef CONFIG_PPC32
-_GLOBAL(__ide_mm_outsl)
-#endif
-_GLOBAL(_outsl_ns)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-	sync
-00:	lwzu	r5,4(r4)
-	stw	r5,0(r3)
-	bdnz	00b
-	sync
-	blr
-
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
index 3262b73a3a6..397c83eda20 100644
--- a/arch/powerpc/kernel/of_device.c
+++ b/arch/powerpc/kernel/of_device.c
@@ -189,27 +189,9 @@ void of_release_dev(struct device *dev)
 int of_device_register(struct of_device *ofdev)
 {
 	int rc;
-	struct of_device **odprop;
 
 	BUG_ON(ofdev->node == NULL);
 
-	odprop = (struct of_device **)get_property(ofdev->node, "linux,device", NULL);
-	if (!odprop) {
-		struct property *new_prop;
-	
-		new_prop = kmalloc(sizeof(struct property) + sizeof(struct of_device *),
-			GFP_KERNEL);
-		if (new_prop == NULL)
-			return -ENOMEM;
-		new_prop->name = "linux,device";
-		new_prop->length = sizeof(sizeof(struct of_device *));
-		new_prop->value = (unsigned char *)&new_prop[1];
-		odprop = (struct of_device **)new_prop->value;
-		*odprop = NULL;
-		prom_add_property(ofdev->node, new_prop);
-	}
-	*odprop = ofdev;
-
 	rc = device_register(&ofdev->dev);
 	if (rc)
 		return rc;
@@ -221,14 +203,8 @@ int of_device_register(struct of_device *ofdev)
 
 void of_device_unregister(struct of_device *ofdev)
 {
-	struct of_device **odprop;
-
 	device_remove_file(&ofdev->dev, &dev_attr_devspec);
 
-	odprop = (struct of_device **)get_property(ofdev->node, "linux,device", NULL);
-	if (odprop)
-		*odprop = NULL;
-
 	device_unregister(&ofdev->dev);
 }
 
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index c68741fed14..55f1a25085c 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -17,6 +17,7 @@
 #include <asm/lppaca.h>
 #include <asm/iseries/it_lp_reg_save.h>
 #include <asm/paca.h>
+#include <asm/mmu.h>
 
 
 /* This symbol is provided by the linker - let it fill in the paca
@@ -45,6 +46,17 @@ struct lppaca lppaca[] = {
 	},
 };
 
+/*
+ * 3 persistent SLBs are registered here.  The buffer will be zero
+ * initially, hence will all be invaild until we actually write them.
+ */
+struct slb_shadow slb_shadow[] __cacheline_aligned = {
+	[0 ... (NR_CPUS-1)] = {
+		.persistent = SLB_NUM_BOLTED,
+		.buffer_length = sizeof(struct slb_shadow),
+	},
+};
+
 /* The Paca is an array with one entry per processor.  Each contains an
  * lppaca, which contains the information shared between the
  * hypervisor and Linux.
@@ -59,7 +71,8 @@ struct lppaca lppaca[] = {
 	.lock_token = 0x8000,						    \
 	.paca_index = (number),		/* Paca Index */		    \
 	.kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL,		    \
-	.hw_cpu_id = 0xffff,
+	.hw_cpu_id = 0xffff,						    \
+	.slb_shadow_ptr = &slb_shadow[number],
 
 #ifdef CONFIG_PPC_ISERIES
 #define PACA_INIT_ISERIES(number)					    \
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 09b1e1bbb29..9b49f8691d2 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -633,12 +633,12 @@ pcibios_alloc_controller(void)
 static void
 make_one_node_map(struct device_node* node, u8 pci_bus)
 {
-	int *bus_range;
+	const int *bus_range;
 	int len;
 
 	if (pci_bus >= pci_bus_count)
 		return;
-	bus_range = (int *) get_property(node, "bus-range", &len);
+	bus_range = get_property(node, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, "
 		       "assuming it starts at 0\n", node->full_name);
@@ -648,13 +648,13 @@ make_one_node_map(struct device_node* node, u8 pci_bus)
 
 	for (node=node->child; node != 0;node = node->sibling) {
 		struct pci_dev* dev;
-		unsigned int *class_code, *reg;
+		const unsigned int *class_code, *reg;
 	
-		class_code = (unsigned int *) get_property(node, "class-code", NULL);
+		class_code = get_property(node, "class-code", NULL);
 		if (!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
 			(*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
 			continue;
-		reg = (unsigned int *)get_property(node, "reg", NULL);
+		reg = get_property(node, "reg", NULL);
 		if (!reg)
 			continue;
 		dev = pci_find_slot(pci_bus, ((reg[0] >> 8) & 0xff));
@@ -669,7 +669,7 @@ pcibios_make_OF_bus_map(void)
 {
 	int i;
 	struct pci_controller* hose;
-	u8* of_prop_map;
+	struct property *map_prop;
 
 	pci_to_OF_bus_map = (u8*)kmalloc(pci_bus_count, GFP_KERNEL);
 	if (!pci_to_OF_bus_map) {
@@ -691,9 +691,12 @@ pcibios_make_OF_bus_map(void)
 			continue;
 		make_one_node_map(node, hose->first_busno);
 	}
-	of_prop_map = get_property(find_path_device("/"), "pci-OF-bus-map", NULL);
-	if (of_prop_map)
-		memcpy(of_prop_map, pci_to_OF_bus_map, pci_bus_count);
+	map_prop = of_find_property(find_path_device("/"),
+			"pci-OF-bus-map", NULL);
+	if (map_prop) {
+		BUG_ON(pci_bus_count > map_prop->length);
+		memcpy(map_prop->value, pci_to_OF_bus_map, pci_bus_count);
+	}
 #ifdef DEBUG
 	printk("PCI->OF bus map:\n");
 	for (i=0; i<pci_bus_count; i++) {
@@ -712,7 +715,7 @@ scan_OF_pci_childs(struct device_node* node, pci_OF_scan_iterator filter, void*
 	struct device_node* sub_node;
 
 	for (; node != 0;node = node->sibling) {
-		unsigned int *class_code;
+		const unsigned int *class_code;
 	
 		if (filter(node, data))
 			return node;
@@ -722,7 +725,7 @@ scan_OF_pci_childs(struct device_node* node, pci_OF_scan_iterator filter, void*
 		 * a fake root for all functions of a multi-function device,
 		 * we go down them as well.
 		 */
-		class_code = (unsigned int *) get_property(node, "class-code", NULL);
+		class_code = get_property(node, "class-code", NULL);
 		if ((!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
 			(*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS)) &&
 			strcmp(node->name, "multifunc-device"))
@@ -737,10 +740,10 @@ scan_OF_pci_childs(struct device_node* node, pci_OF_scan_iterator filter, void*
 static int
 scan_OF_pci_childs_iterator(struct device_node* node, void* data)
 {
-	unsigned int *reg;
+	const unsigned int *reg;
 	u8* fdata = (u8*)data;
 	
-	reg = (unsigned int *) get_property(node, "reg", NULL);
+	reg = get_property(node, "reg", NULL);
 	if (reg && ((reg[0] >> 8) & 0xff) == fdata[1]
 		&& ((reg[0] >> 16) & 0xff) == fdata[0])
 		return 1;
@@ -841,7 +844,7 @@ find_OF_pci_device_filter(struct device_node* node, void* data)
 int
 pci_device_from_OF_node(struct device_node* node, u8* bus, u8* devfn)
 {
-	unsigned int *reg;
+	const unsigned int *reg;
 	struct pci_controller* hose;
 	struct pci_dev* dev = NULL;
 	
@@ -854,7 +857,7 @@ pci_device_from_OF_node(struct device_node* node, u8* bus, u8* devfn)
 	if (!scan_OF_pci_childs(((struct device_node*)hose->arch_data)->child,
 			find_OF_pci_device_filter, (void *)node))
 		return -ENODEV;
-	reg = (unsigned int *) get_property(node, "reg", NULL);
+	reg = get_property(node, "reg", NULL);
 	if (!reg)
 		return -ENODEV;
 	*bus = (reg[0] >> 16) & 0xff;
@@ -885,8 +888,8 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
 			   struct device_node *dev, int primary)
 {
 	static unsigned int static_lc_ranges[256] __initdata;
-	unsigned int *dt_ranges, *lc_ranges, *ranges, *prev;
-	unsigned int size;
+	const unsigned int *dt_ranges;
+	unsigned int *lc_ranges, *ranges, *prev, size;
 	int rlen = 0, orig_rlen;
 	int memno = 0;
 	struct resource *res;
@@ -897,7 +900,7 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
 	 * that can have more than 3 ranges, fortunately using contiguous
 	 * addresses -- BenH
 	 */
-	dt_ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
+	dt_ranges = get_property(dev, "ranges", &rlen);
 	if (!dt_ranges)
 		return;
 	/* Sanity check, though hopefully that never happens */
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 138134c8c17..c1b1e14775e 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -185,34 +185,6 @@ static void __devinit pci_setup_pci_controller(struct pci_controller *hose)
 	spin_unlock(&hose_spinlock);
 }
 
-static void add_linux_pci_domain(struct device_node *dev,
-				 struct pci_controller *phb)
-{
-	struct property *of_prop;
-	unsigned int size;
-
-	of_prop = (struct property *)
-		get_property(dev, "linux,pci-domain", &size);
-	if (of_prop != NULL)
-		return;
-	WARN_ON(of_prop && size < sizeof(int));
-	if (of_prop && size < sizeof(int))
-		of_prop = NULL;
-	size = sizeof(struct property) + sizeof(int);
-	if (of_prop == NULL) {
-		if (mem_init_done)
-			of_prop = kmalloc(size, GFP_KERNEL);
-		else
-			of_prop = alloc_bootmem(size);
-	}
-	memset(of_prop, 0, sizeof(struct property));
-	of_prop->name = "linux,pci-domain";
-	of_prop->length = sizeof(int);
-	of_prop->value = (unsigned char *)&of_prop[1];
-	*((int *)of_prop->value) = phb->global_number;
-	prom_add_property(dev, of_prop);
-}
-
 struct pci_controller * pcibios_alloc_controller(struct device_node *dev)
 {
 	struct pci_controller *phb;
@@ -226,22 +198,13 @@ struct pci_controller * pcibios_alloc_controller(struct device_node *dev)
 	pci_setup_pci_controller(phb);
 	phb->arch_data = dev;
 	phb->is_dynamic = mem_init_done;
-	if (dev) {
+	if (dev)
 		PHB_SET_NODE(phb, of_node_to_nid(dev));
-		add_linux_pci_domain(dev, phb);
-	}
 	return phb;
 }
 
 void pcibios_free_controller(struct pci_controller *phb)
 {
-	if (phb->arch_data) {
-		struct device_node *np = phb->arch_data;
-		int *domain = (int *)get_property(np,
-						  "linux,pci-domain", NULL);
-		if (domain)
-			*domain = -1;
-	}
 	if (phb->is_dynamic)
 		kfree(phb);
 }
@@ -283,10 +246,10 @@ static void __init pcibios_claim_of_setup(void)
 #ifdef CONFIG_PPC_MULTIPLATFORM
 static u32 get_int_prop(struct device_node *np, const char *name, u32 def)
 {
-	u32 *prop;
+	const u32 *prop;
 	int len;
 
-	prop = (u32 *) get_property(np, name, &len);
+	prop = get_property(np, name, &len);
 	if (prop && len >= 4)
 		return *prop;
 	return def;
@@ -315,10 +278,11 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
 	u64 base, size;
 	unsigned int flags;
 	struct resource *res;
-	u32 *addrs, i;
+	const u32 *addrs;
+	u32 i;
 	int proplen;
 
-	addrs = (u32 *) get_property(node, "assigned-addresses", &proplen);
+	addrs = get_property(node, "assigned-addresses", &proplen);
 	if (!addrs)
 		return;
 	DBG("    parse addresses (%d bytes) @ %p\n", proplen, addrs);
@@ -418,7 +382,7 @@ void __devinit of_scan_bus(struct device_node *node,
 				  struct pci_bus *bus)
 {
 	struct device_node *child = NULL;
-	u32 *reg;
+	const u32 *reg;
 	int reglen, devfn;
 	struct pci_dev *dev;
 
@@ -426,7 +390,7 @@ void __devinit of_scan_bus(struct device_node *node,
 
 	while ((child = of_get_next_child(node, child)) != NULL) {
 		DBG("  * %s\n", child->full_name);
-		reg = (u32 *) get_property(child, "reg", &reglen);
+		reg = get_property(child, "reg", &reglen);
 		if (reg == NULL || reglen < 20)
 			continue;
 		devfn = (reg[0] >> 8) & 0xff;
@@ -450,7 +414,7 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
 			 	struct pci_dev *dev)
 {
 	struct pci_bus *bus;
-	u32 *busrange, *ranges;
+	const u32 *busrange, *ranges;
 	int len, i, mode;
 	struct resource *res;
 	unsigned int flags;
@@ -459,13 +423,13 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
 	DBG("of_scan_pci_bridge(%s)\n", node->full_name);
 
 	/* parse bus-range property */
-	busrange = (u32 *) get_property(node, "bus-range", &len);
+	busrange = get_property(node, "bus-range", &len);
 	if (busrange == NULL || len != 8) {
 		printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
 		       node->full_name);
 		return;
 	}
-	ranges = (u32 *) get_property(node, "ranges", &len);
+	ranges = get_property(node, "ranges", &len);
 	if (ranges == NULL) {
 		printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n",
 		       node->full_name);
@@ -929,13 +893,13 @@ static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
 		unsigned int size;
 	};
 
-	struct isa_range *range;
+	const struct isa_range *range;
 	unsigned long pci_addr;
 	unsigned int isa_addr;
 	unsigned int size;
 	int rlen = 0;
 
-	range = (struct isa_range *) get_property(isa_node, "ranges", &rlen);
+	range = get_property(isa_node, "ranges", &rlen);
 	if (range == NULL || (rlen < sizeof(struct isa_range))) {
 		printk(KERN_ERR "no ISA ranges or unexpected isa range size,"
 		       "mapping 64k\n");
@@ -976,7 +940,8 @@ static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
 void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
 					    struct device_node *dev, int prim)
 {
-	unsigned int *ranges, pci_space;
+	const unsigned int *ranges;
+	unsigned int pci_space;
 	unsigned long size;
 	int rlen = 0;
 	int memno = 0;
@@ -994,7 +959,7 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
 	 *			(size depending on dev->n_addr_cells)
 	 *   cells 4+5 or 5+6:	the size of the range
 	 */
-	ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
+	ranges = get_property(dev, "ranges", &rlen);
 	if (ranges == NULL)
 		return;
 	hose->io_base_phys = 0;
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index 1c18953514c..68df018dae0 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -40,8 +40,8 @@
 static void * __devinit update_dn_pci_info(struct device_node *dn, void *data)
 {
 	struct pci_controller *phb = data;
-	int *type = (int *)get_property(dn, "ibm,pci-config-space-type", NULL);
-	u32 *regs;
+	const int *type = get_property(dn, "ibm,pci-config-space-type", NULL);
+	const u32 *regs;
 	struct pci_dn *pdn;
 
 	if (mem_init_done)
@@ -54,14 +54,14 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data)
 	dn->data = pdn;
 	pdn->node = dn;
 	pdn->phb = phb;
-	regs = (u32 *)get_property(dn, "reg", NULL);
+	regs = get_property(dn, "reg", NULL);
 	if (regs) {
 		/* First register entry is addr (00BBSS00)  */
 		pdn->busno = (regs[0] >> 16) & 0xff;
 		pdn->devfn = (regs[0] >> 8) & 0xff;
 	}
 	if (firmware_has_feature(FW_FEATURE_ISERIES)) {
-		u32 *busp = (u32 *)get_property(dn, "linux,subbus", NULL);
+		const u32 *busp = get_property(dn, "linux,subbus", NULL);
 		if (busp)
 			pdn->bussubno = *busp;
 	}
@@ -96,10 +96,11 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre,
 
 	/* We started with a phb, iterate all childs */
 	for (dn = start->child; dn; dn = nextdn) {
-		u32 *classp, class;
+		const u32 *classp;
+		u32 class;
 
 		nextdn = NULL;
-		classp = (u32 *)get_property(dn, "class-code", NULL);
+		classp = get_property(dn, "class-code", NULL);
 		class = classp ? *classp : 0;
 
 		if (pre && ((ret = pre(dn, data)) != NULL))
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 39d3bfcabcd..807193a3c78 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -91,25 +91,10 @@ EXPORT_SYMBOL(__copy_tofrom_user);
 EXPORT_SYMBOL(__clear_user);
 EXPORT_SYMBOL(__strncpy_from_user);
 EXPORT_SYMBOL(__strnlen_user);
-
-#ifndef  __powerpc64__
-EXPORT_SYMBOL(__ide_mm_insl);
-EXPORT_SYMBOL(__ide_mm_outsw);
-EXPORT_SYMBOL(__ide_mm_insw);
-EXPORT_SYMBOL(__ide_mm_outsl);
+#ifdef CONFIG_PPC64
+EXPORT_SYMBOL(copy_4K_page);
 #endif
 
-EXPORT_SYMBOL(_insb);
-EXPORT_SYMBOL(_outsb);
-EXPORT_SYMBOL(_insw);
-EXPORT_SYMBOL(_outsw);
-EXPORT_SYMBOL(_insl);
-EXPORT_SYMBOL(_outsl);
-EXPORT_SYMBOL(_insw_ns);
-EXPORT_SYMBOL(_outsw_ns);
-EXPORT_SYMBOL(_insl_ns);
-EXPORT_SYMBOL(_outsl_ns);
-
 #if defined(CONFIG_PPC32) && (defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE))
 EXPORT_SYMBOL(ppc_ide_md);
 #endif
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index a1787ffb631..eb913f80bfb 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -757,24 +757,9 @@ static int __init early_init_dt_scan_root(unsigned long node,
 static unsigned long __init dt_mem_next_cell(int s, cell_t **cellp)
 {
 	cell_t *p = *cellp;
-	unsigned long r;
 
-	/* Ignore more than 2 cells */
-	while (s > sizeof(unsigned long) / 4) {
-		p++;
-		s--;
-	}
-	r = *p++;
-#ifdef CONFIG_PPC64
-	if (s > 1) {
-		r <<= 32;
-		r |= *(p++);
-		s--;
-	}
-#endif
-
-	*cellp = p;
-	return r;
+	*cellp = p + s;
+	return of_read_ulong(p, s);
 }
 
 
@@ -942,11 +927,11 @@ void __init early_init_devtree(void *params)
 int
 prom_n_addr_cells(struct device_node* np)
 {
-	int* ip;
+	const int *ip;
 	do {
 		if (np->parent)
 			np = np->parent;
-		ip = (int *) get_property(np, "#address-cells", NULL);
+		ip = get_property(np, "#address-cells", NULL);
 		if (ip != NULL)
 			return *ip;
 	} while (np->parent);
@@ -958,11 +943,11 @@ EXPORT_SYMBOL(prom_n_addr_cells);
 int
 prom_n_size_cells(struct device_node* np)
 {
-	int* ip;
+	const int* ip;
 	do {
 		if (np->parent)
 			np = np->parent;
-		ip = (int *) get_property(np, "#size-cells", NULL);
+		ip = get_property(np, "#size-cells", NULL);
 		if (ip != NULL)
 			return *ip;
 	} while (np->parent);
@@ -1034,7 +1019,7 @@ int device_is_compatible(struct device_node *device, const char *compat)
 	const char* cp;
 	int cplen, l;
 
-	cp = (char *) get_property(device, "compatible", &cplen);
+	cp = get_property(device, "compatible", &cplen);
 	if (cp == NULL)
 		return 0;
 	while (cplen > 0) {
@@ -1449,7 +1434,7 @@ static int of_finish_dynamic_node(struct device_node *node)
 {
 	struct device_node *parent = of_get_parent(node);
 	int err = 0;
-	phandle *ibm_phandle;
+	const phandle *ibm_phandle;
 
 	node->name = get_property(node, "name", NULL);
 	node->type = get_property(node, "device_type", NULL);
@@ -1466,8 +1451,7 @@ static int of_finish_dynamic_node(struct device_node *node)
 		return -ENODEV;
 
 	/* fix up new node's linux_phandle field */
-	if ((ibm_phandle = (unsigned int *)get_property(node,
-							"ibm,phandle", NULL)))
+	if ((ibm_phandle = get_property(node, "ibm,phandle", NULL)))
 		node->linux_phandle = *ibm_phandle;
 
 out:
@@ -1528,7 +1512,7 @@ struct property *of_find_property(struct device_node *np, const char *name,
  * Find a property with a given name for a given node
  * and return the value.
  */
-void *get_property(struct device_node *np, const char *name, int *lenp)
+const void *get_property(struct device_node *np, const char *name, int *lenp)
 {
 	struct property *pp = of_find_property(np,name,lenp);
 	return pp ? pp->value : NULL;
@@ -1658,16 +1642,16 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
 	hardid = get_hard_smp_processor_id(cpu);
 
 	for_each_node_by_type(np, "cpu") {
-		u32 *intserv;
+		const u32 *intserv;
 		unsigned int plen, t;
 
 		/* Check for ibm,ppc-interrupt-server#s. If it doesn't exist
 		 * fallback to "reg" property and assume no threads
 		 */
-		intserv = (u32 *)get_property(np, "ibm,ppc-interrupt-server#s",
-					      &plen);
+		intserv = get_property(np, "ibm,ppc-interrupt-server#s",
+				&plen);
 		if (intserv == NULL) {
-			u32 *reg = (u32 *)get_property(np, "reg", NULL);
+			const u32 *reg = get_property(np, "reg", NULL);
 			if (reg == NULL)
 				continue;
 			if (*reg == hardid) {
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 4394e545f9f..b91761639d9 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2033,16 +2033,22 @@ static void __init fixup_device_tree_maple(void)
 #endif
 
 #ifdef CONFIG_PPC_CHRP
-/* Pegasos lacks the "ranges" property in the isa node */
+/* Pegasos and BriQ lacks the "ranges" property in the isa node */
 static void __init fixup_device_tree_chrp(void)
 {
 	phandle isa;
 	u32 isa_ranges[6];
+	u32 rloc = 0x01006000; /* IO space; PCI device = 12 */
 	char *name;
 	int rc;
 
 	name = "/pci@80000000/isa@c";
 	isa = call_prom("finddevice", 1, 1, ADDR(name));
+	if (!PHANDLE_VALID(isa)) {
+		name = "/pci@ff500000/isa@6";
+		isa = call_prom("finddevice", 1, 1, ADDR(name));
+		rloc = 0x01003000; /* IO space; PCI device = 6 */
+	}
 	if (!PHANDLE_VALID(isa))
 		return;
 
@@ -2054,7 +2060,7 @@ static void __init fixup_device_tree_chrp(void)
 
 	isa_ranges[0] = 0x1;
 	isa_ranges[1] = 0x0;
-	isa_ranges[2] = 0x01006000;
+	isa_ranges[2] = rloc;
 	isa_ranges[3] = 0x0;
 	isa_ranges[4] = 0x0;
 	isa_ranges[5] = 0x00010000;
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index a10825a5dfe..603dff3ad62 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -27,7 +27,7 @@
 
 /* Debug utility */
 #ifdef DEBUG
-static void of_dump_addr(const char *s, u32 *addr, int na)
+static void of_dump_addr(const char *s, const u32 *addr, int na)
 {
 	printk("%s", s);
 	while(na--)
@@ -35,7 +35,7 @@ static void of_dump_addr(const char *s, u32 *addr, int na)
 	printk("\n");
 }
 #else
-static void of_dump_addr(const char *s, u32 *addr, int na) { }
+static void of_dump_addr(const char *s, const u32 *addr, int na) { }
 #endif
 
 
@@ -46,9 +46,10 @@ struct of_bus {
 	int		(*match)(struct device_node *parent);
 	void		(*count_cells)(struct device_node *child,
 				       int *addrc, int *sizec);
-	u64		(*map)(u32 *addr, u32 *range, int na, int ns, int pna);
+	u64		(*map)(u32 *addr, const u32 *range,
+				int na, int ns, int pna);
 	int		(*translate)(u32 *addr, u64 offset, int na);
-	unsigned int	(*get_flags)(u32 *addr);
+	unsigned int	(*get_flags)(const u32 *addr);
 };
 
 
@@ -65,7 +66,8 @@ static void of_bus_default_count_cells(struct device_node *dev,
 		*sizec = prom_n_size_cells(dev);
 }
 
-static u64 of_bus_default_map(u32 *addr, u32 *range, int na, int ns, int pna)
+static u64 of_bus_default_map(u32 *addr, const u32 *range,
+		int na, int ns, int pna)
 {
 	u64 cp, s, da;
 
@@ -93,7 +95,7 @@ static int of_bus_default_translate(u32 *addr, u64 offset, int na)
 	return 0;
 }
 
-static unsigned int of_bus_default_get_flags(u32 *addr)
+static unsigned int of_bus_default_get_flags(const u32 *addr)
 {
 	return IORESOURCE_MEM;
 }
@@ -118,7 +120,7 @@ static void of_bus_pci_count_cells(struct device_node *np,
 		*sizec = 2;
 }
 
-static u64 of_bus_pci_map(u32 *addr, u32 *range, int na, int ns, int pna)
+static u64 of_bus_pci_map(u32 *addr, const u32 *range, int na, int ns, int pna)
 {
 	u64 cp, s, da;
 
@@ -143,7 +145,7 @@ static int of_bus_pci_translate(u32 *addr, u64 offset, int na)
 	return of_bus_default_translate(addr + 1, offset, na - 1);
 }
 
-static unsigned int of_bus_pci_get_flags(u32 *addr)
+static unsigned int of_bus_pci_get_flags(const u32 *addr)
 {
 	unsigned int flags = 0;
 	u32 w = addr[0];
@@ -178,7 +180,7 @@ static void of_bus_isa_count_cells(struct device_node *child,
 		*sizec = 1;
 }
 
-static u64 of_bus_isa_map(u32 *addr, u32 *range, int na, int ns, int pna)
+static u64 of_bus_isa_map(u32 *addr, const u32 *range, int na, int ns, int pna)
 {
 	u64 cp, s, da;
 
@@ -203,7 +205,7 @@ static int of_bus_isa_translate(u32 *addr, u64 offset, int na)
 	return of_bus_default_translate(addr + 1, offset, na - 1);
 }
 
-static unsigned int of_bus_isa_get_flags(u32 *addr)
+static unsigned int of_bus_isa_get_flags(const u32 *addr)
 {
 	unsigned int flags = 0;
 	u32 w = addr[0];
@@ -268,7 +270,7 @@ static int of_translate_one(struct device_node *parent, struct of_bus *bus,
 			    struct of_bus *pbus, u32 *addr,
 			    int na, int ns, int pna)
 {
-	u32 *ranges;
+	const u32 *ranges;
 	unsigned int rlen;
 	int rone;
 	u64 offset = OF_BAD_ADDR;
@@ -285,7 +287,7 @@ static int of_translate_one(struct device_node *parent, struct of_bus *bus,
 	 * to translate addresses that aren't supposed to be translated in
 	 * the first place. --BenH.
 	 */
-	ranges = (u32 *)get_property(parent, "ranges", &rlen);
+	ranges = get_property(parent, "ranges", &rlen);
 	if (ranges == NULL || rlen == 0) {
 		offset = of_read_number(addr, na);
 		memset(addr, 0, pna * 4);
@@ -328,7 +330,7 @@ static int of_translate_one(struct device_node *parent, struct of_bus *bus,
  * that can be mapped to a cpu physical address). This is not really specified
  * that way, but this is traditionally the way IBM at least do things
  */
-u64 of_translate_address(struct device_node *dev, u32 *in_addr)
+u64 of_translate_address(struct device_node *dev, const u32 *in_addr)
 {
 	struct device_node *parent = NULL;
 	struct of_bus *bus, *pbus;
@@ -405,10 +407,10 @@ u64 of_translate_address(struct device_node *dev, u32 *in_addr)
 }
 EXPORT_SYMBOL(of_translate_address);
 
-u32 *of_get_address(struct device_node *dev, int index, u64 *size,
+const u32 *of_get_address(struct device_node *dev, int index, u64 *size,
 		    unsigned int *flags)
 {
-	u32 *prop;
+	const u32 *prop;
 	unsigned int psize;
 	struct device_node *parent;
 	struct of_bus *bus;
@@ -425,7 +427,7 @@ u32 *of_get_address(struct device_node *dev, int index, u64 *size,
 		return NULL;
 
 	/* Get "reg" or "assigned-addresses" property */
-	prop = (u32 *)get_property(dev, bus->addresses, &psize);
+	prop = get_property(dev, bus->addresses, &psize);
 	if (prop == NULL)
 		return NULL;
 	psize /= 4;
@@ -443,10 +445,10 @@ u32 *of_get_address(struct device_node *dev, int index, u64 *size,
 }
 EXPORT_SYMBOL(of_get_address);
 
-u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
+const u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
 			unsigned int *flags)
 {
-	u32 *prop;
+	const u32 *prop;
 	unsigned int psize;
 	struct device_node *parent;
 	struct of_bus *bus;
@@ -467,7 +469,7 @@ u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
 		return NULL;
 
 	/* Get "reg" or "assigned-addresses" property */
-	prop = (u32 *)get_property(dev, bus->addresses, &psize);
+	prop = get_property(dev, bus->addresses, &psize);
 	if (prop == NULL)
 		return NULL;
 	psize /= 4;
@@ -485,7 +487,7 @@ u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
 }
 EXPORT_SYMBOL(of_get_pci_address);
 
-static int __of_address_to_resource(struct device_node *dev, u32 *addrp,
+static int __of_address_to_resource(struct device_node *dev, const u32 *addrp,
 				    u64 size, unsigned int flags,
 				    struct resource *r)
 {
@@ -516,7 +518,7 @@ static int __of_address_to_resource(struct device_node *dev, u32 *addrp,
 int of_address_to_resource(struct device_node *dev, int index,
 			   struct resource *r)
 {
-	u32		*addrp;
+	const u32	*addrp;
 	u64		size;
 	unsigned int	flags;
 
@@ -530,7 +532,7 @@ EXPORT_SYMBOL_GPL(of_address_to_resource);
 int of_pci_address_to_resource(struct device_node *dev, int bar,
 			       struct resource *r)
 {
-	u32		*addrp;
+	const u32	*addrp;
 	u64		size;
 	unsigned int	flags;
 
@@ -541,13 +543,14 @@ int of_pci_address_to_resource(struct device_node *dev, int bar,
 }
 EXPORT_SYMBOL_GPL(of_pci_address_to_resource);
 
-void of_parse_dma_window(struct device_node *dn, unsigned char *dma_window_prop,
+void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
 		unsigned long *busno, unsigned long *phys, unsigned long *size)
 {
-	u32 *dma_window, cells;
-	unsigned char *prop;
+	const u32 *dma_window;
+	u32 cells;
+	const unsigned char *prop;
 
-	dma_window = (u32 *)dma_window_prop;
+	dma_window = dma_window_prop;
 
 	/* busno is always one cell */
 	*busno = *(dma_window++);
@@ -576,13 +579,13 @@ static struct device_node *of_irq_dflt_pic;
 static struct device_node *of_irq_find_parent(struct device_node *child)
 {
 	struct device_node *p;
-	phandle *parp;
+	const phandle *parp;
 
 	if (!of_node_get(child))
 		return NULL;
 
 	do {
-		parp = (phandle *)get_property(child, "interrupt-parent", NULL);
+		parp = get_property(child, "interrupt-parent", NULL);
 		if (parp == NULL)
 			p = of_get_parent(child);
 		else {
@@ -639,11 +642,11 @@ void of_irq_map_init(unsigned int flags)
 
 }
 
-int of_irq_map_raw(struct device_node *parent, u32 *intspec, u32 ointsize,
-		   u32 *addr, struct of_irq *out_irq)
+int of_irq_map_raw(struct device_node *parent, const u32 *intspec, u32 ointsize,
+		const u32 *addr, struct of_irq *out_irq)
 {
 	struct device_node *ipar, *tnode, *old = NULL, *newpar = NULL;
-	u32 *tmp, *imap, *imask;
+	const u32 *tmp, *imap, *imask;
 	u32 intsize = 1, addrsize, newintsize = 0, newaddrsize = 0;
 	int imaplen, match, i;
 
@@ -657,7 +660,7 @@ int of_irq_map_raw(struct device_node *parent, u32 *intspec, u32 ointsize,
 	 * is none, we are nice and just walk up the tree
 	 */
 	do {
-		tmp = (u32 *)get_property(ipar, "#interrupt-cells", NULL);
+		tmp = get_property(ipar, "#interrupt-cells", NULL);
 		if (tmp != NULL) {
 			intsize = *tmp;
 			break;
@@ -681,7 +684,7 @@ int of_irq_map_raw(struct device_node *parent, u32 *intspec, u32 ointsize,
 	 */
 	old = of_node_get(ipar);
 	do {
-		tmp = (u32 *)get_property(old, "#address-cells", NULL);
+		tmp = get_property(old, "#address-cells", NULL);
 		tnode = of_get_parent(old);
 		of_node_put(old);
 		old = tnode;
@@ -708,7 +711,7 @@ int of_irq_map_raw(struct device_node *parent, u32 *intspec, u32 ointsize,
 		}
 
 		/* Now look for an interrupt-map */
-		imap = (u32 *)get_property(ipar, "interrupt-map", &imaplen);
+		imap = get_property(ipar, "interrupt-map", &imaplen);
 		/* No interrupt map, check for an interrupt parent */
 		if (imap == NULL) {
 			DBG(" -> no map, getting parent\n");
@@ -718,7 +721,7 @@ int of_irq_map_raw(struct device_node *parent, u32 *intspec, u32 ointsize,
 		imaplen /= sizeof(u32);
 
 		/* Look for a mask */
-		imask = (u32 *)get_property(ipar, "interrupt-map-mask", NULL);
+		imask = get_property(ipar, "interrupt-map-mask", NULL);
 
 		/* If we were passed no "reg" property and we attempt to parse
 		 * an interrupt-map, then #address-cells must be 0.
@@ -765,14 +768,14 @@ int of_irq_map_raw(struct device_node *parent, u32 *intspec, u32 ointsize,
 			/* Get #interrupt-cells and #address-cells of new
 			 * parent
 			 */
-			tmp = (u32 *)get_property(newpar, "#interrupt-cells",
+			tmp = get_property(newpar, "#interrupt-cells",
 						  NULL);
 			if (tmp == NULL) {
 				DBG(" -> parent lacks #interrupt-cells !\n");
 				goto fail;
 			}
 			newintsize = *tmp;
-			tmp = (u32 *)get_property(newpar, "#address-cells",
+			tmp = get_property(newpar, "#address-cells",
 						  NULL);
 			newaddrsize = (tmp == NULL) ? 0 : *tmp;
 
@@ -818,14 +821,14 @@ EXPORT_SYMBOL_GPL(of_irq_map_raw);
 static int of_irq_map_oldworld(struct device_node *device, int index,
 			       struct of_irq *out_irq)
 {
-	u32 *ints;
+	const u32 *ints;
 	int intlen;
 
 	/*
 	 * Old machines just have a list of interrupt numbers
 	 * and no interrupt-controller nodes.
 	 */
-	ints = (u32 *) get_property(device, "AAPL,interrupts", &intlen);
+	ints = get_property(device, "AAPL,interrupts", &intlen);
 	if (ints == NULL)
 		return -EINVAL;
 	intlen /= sizeof(u32);
@@ -850,7 +853,8 @@ static int of_irq_map_oldworld(struct device_node *device, int index,
 int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq)
 {
 	struct device_node *p;
-	u32 *intspec, *tmp, intsize, intlen, *addr;
+	const u32 *intspec, *tmp, *addr;
+	u32 intsize, intlen;
 	int res;
 
 	DBG("of_irq_map_one: dev=%s, index=%d\n", device->full_name, index);
@@ -860,13 +864,13 @@ int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq
 		return of_irq_map_oldworld(device, index, out_irq);
 
 	/* Get the interrupts property */
-	intspec = (u32 *)get_property(device, "interrupts", &intlen);
+	intspec = get_property(device, "interrupts", &intlen);
 	if (intspec == NULL)
 		return -EINVAL;
 	intlen /= sizeof(u32);
 
 	/* Get the reg property (if any) */
-	addr = (u32 *)get_property(device, "reg", NULL);
+	addr = get_property(device, "reg", NULL);
 
 	/* Look for the interrupt parent. */
 	p = of_irq_find_parent(device);
@@ -874,7 +878,7 @@ int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq
 		return -EINVAL;
 
 	/* Get size of interrupt specifier */
-	tmp = (u32 *)get_property(p, "#interrupt-cells", NULL);
+	tmp = get_property(p, "#interrupt-cells", NULL);
 	if (tmp == NULL) {
 		of_node_put(p);
 		return -EINVAL;
diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c
index 9c9ad1fa9cc..2fe82abf1c5 100644
--- a/arch/powerpc/kernel/rtas-proc.c
+++ b/arch/powerpc/kernel/rtas-proc.c
@@ -246,12 +246,12 @@ struct file_operations ppc_rtas_rmo_buf_ops = {
 
 static int ppc_rtas_find_all_sensors(void);
 static void ppc_rtas_process_sensor(struct seq_file *m,
-	struct individual_sensor *s, int state, int error, char *loc);
+	struct individual_sensor *s, int state, int error, const char *loc);
 static char *ppc_rtas_process_error(int error);
 static void get_location_code(struct seq_file *m,
-	struct individual_sensor *s, char *loc);
-static void check_location_string(struct seq_file *m, char *c);
-static void check_location(struct seq_file *m, char *c);
+	struct individual_sensor *s, const char *loc);
+static void check_location_string(struct seq_file *m, const char *c);
+static void check_location(struct seq_file *m, const char *c);
 
 static int __init proc_rtas_init(void)
 {
@@ -446,11 +446,11 @@ static int ppc_rtas_sensors_show(struct seq_file *m, void *v)
 	for (i=0; i<sensors.quant; i++) {
 		struct individual_sensor *p = &sensors.sensor[i];
 		char rstr[64];
-		char *loc;
+		const char *loc;
 		int llen, offs;
 
 		sprintf (rstr, SENSOR_PREFIX"%04d", p->token);
-		loc = (char *) get_property(rtas_node, rstr, &llen);
+		loc = get_property(rtas_node, rstr, &llen);
 
 		/* A sensor may have multiple instances */
 		for (j = 0, offs = 0; j <= p->quant; j++) {
@@ -474,10 +474,10 @@ static int ppc_rtas_sensors_show(struct seq_file *m, void *v)
 
 static int ppc_rtas_find_all_sensors(void)
 {
-	unsigned int *utmp;
+	const unsigned int *utmp;
 	int len, i;
 
-	utmp = (unsigned int *) get_property(rtas_node, "rtas-sensors", &len);
+	utmp = get_property(rtas_node, "rtas-sensors", &len);
 	if (utmp == NULL) {
 		printk (KERN_ERR "error: could not get rtas-sensors\n");
 		return 1;
@@ -530,7 +530,7 @@ static char *ppc_rtas_process_error(int error)
  */
 
 static void ppc_rtas_process_sensor(struct seq_file *m,
-	struct individual_sensor *s, int state, int error, char *loc)
+	struct individual_sensor *s, int state, int error, const char *loc)
 {
 	/* Defined return vales */
 	const char * key_switch[]        = { "Off\t", "Normal\t", "Secure\t", 
@@ -682,7 +682,7 @@ static void ppc_rtas_process_sensor(struct seq_file *m,
 
 /* ****************************************************************** */
 
-static void check_location(struct seq_file *m, char *c)
+static void check_location(struct seq_file *m, const char *c)
 {
 	switch (c[0]) {
 		case LOC_PLANAR:
@@ -719,7 +719,7 @@ static void check_location(struct seq_file *m, char *c)
  * ${LETTER}${NUMBER}[[-/]${LETTER}${NUMBER} [ ... ] ]
  * the '.' may be an abbrevation
  */
-static void check_location_string(struct seq_file *m, char *c)
+static void check_location_string(struct seq_file *m, const char *c)
 {
 	while (*c) {
 		if (isalpha(*c) || *c == '.')
@@ -733,7 +733,8 @@ static void check_location_string(struct seq_file *m, char *c)
 
 /* ****************************************************************** */
 
-static void get_location_code(struct seq_file *m, struct individual_sensor *s, char *loc)
+static void get_location_code(struct seq_file *m, struct individual_sensor *s,
+		const char *loc)
 {
 	if (!loc || !*loc) {
 		seq_printf(m, "---");/* does not have a location */
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 77f1e06d208..6ef80d4e38d 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -177,10 +177,12 @@ void __init udbg_init_rtas_console(void)
 void rtas_progress(char *s, unsigned short hex)
 {
 	struct device_node *root;
-	int width, *p;
+	int width;
+	const int *p;
 	char *os;
 	static int display_character, set_indicator;
-	static int display_width, display_lines, *row_width, form_feed;
+	static int display_width, display_lines, form_feed;
+	const static int *row_width;
 	static DEFINE_SPINLOCK(progress_lock);
 	static int current_line;
 	static int pending_newline = 0;  /* did last write end with unprinted newline? */
@@ -191,16 +193,16 @@ void rtas_progress(char *s, unsigned short hex)
 	if (display_width == 0) {
 		display_width = 0x10;
 		if ((root = find_path_device("/rtas"))) {
-			if ((p = (unsigned int *)get_property(root,
+			if ((p = get_property(root,
 					"ibm,display-line-length", NULL)))
 				display_width = *p;
-			if ((p = (unsigned int *)get_property(root,
+			if ((p = get_property(root,
 					"ibm,form-feed", NULL)))
 				form_feed = *p;
-			if ((p = (unsigned int *)get_property(root,
+			if ((p = get_property(root,
 					"ibm,display-number-of-lines", NULL)))
 				display_lines = *p;
-			row_width = (unsigned int *)get_property(root,
+			row_width = get_property(root,
 					"ibm,display-truncation-length", NULL);
 		}
 		display_character = rtas_token("display-character");
@@ -293,10 +295,10 @@ EXPORT_SYMBOL(rtas_progress);		/* needed by rtas_flash module */
 
 int rtas_token(const char *service)
 {
-	int *tokp;
+	const int *tokp;
 	if (rtas.dev == NULL)
 		return RTAS_UNKNOWN_SERVICE;
-	tokp = (int *) get_property(rtas.dev, service, NULL);
+	tokp = get_property(rtas.dev, service, NULL);
 	return tokp ? *tokp : RTAS_UNKNOWN_SERVICE;
 }
 EXPORT_SYMBOL(rtas_token);
@@ -626,6 +628,9 @@ void rtas_os_term(char *str)
 {
 	int status;
 
+	if (panic_timeout)
+		return;
+
 	if (RTAS_UNKNOWN_SERVICE == rtas_token("ibm,os-term"))
 		return;
 
@@ -687,15 +692,14 @@ static int rtas_ibm_suspend_me(struct rtas_args *args)
 	int i;
 	long state;
 	long rc;
-	unsigned long dummy;
-
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 	struct rtas_suspend_me_data data;
 
 	/* Make sure the state is valid */
-	rc = plpar_hcall(H_VASI_STATE,
-			 ((u64)args->args[0] << 32) | args->args[1],
-			 0, 0, 0,
-			 &state, &dummy, &dummy);
+	rc = plpar_hcall(H_VASI_STATE, retbuf,
+			 ((u64)args->args[0] << 32) | args->args[1]);
+
+	state = retbuf[0];
 
 	if (rc) {
 		printk(KERN_ERR "rtas_ibm_suspend_me: vasi_state returned %ld\n",rc);
@@ -845,15 +849,15 @@ void __init rtas_initialize(void)
 	 */
 	rtas.dev = of_find_node_by_name(NULL, "rtas");
 	if (rtas.dev) {
-		u32 *basep, *entryp;
-		u32 *sizep;
+		const u32 *basep, *entryp, *sizep;
 
-		basep = (u32 *)get_property(rtas.dev, "linux,rtas-base", NULL);
-		sizep = (u32 *)get_property(rtas.dev, "rtas-size", NULL);
+		basep = get_property(rtas.dev, "linux,rtas-base", NULL);
+		sizep = get_property(rtas.dev, "rtas-size", NULL);
 		if (basep != NULL && sizep != NULL) {
 			rtas.base = *basep;
 			rtas.size = *sizep;
-			entryp = (u32 *)get_property(rtas.dev, "linux,rtas-entry", NULL);
+			entryp = get_property(rtas.dev,
+					"linux,rtas-entry", NULL);
 			if (entryp == NULL) /* Ugh */
 				rtas.entry = rtas.base;
 			else
@@ -909,6 +913,11 @@ int __init early_init_dt_scan_rtas(unsigned long node,
 	basep = of_get_flat_dt_prop(node, "get-term-char", NULL);
 	if (basep)
 		rtas_getchar_token = *basep;
+
+	if (rtas_putchar_token != RTAS_UNKNOWN_SERVICE &&
+	    rtas_getchar_token != RTAS_UNKNOWN_SERVICE)
+		udbg_init_rtas_console();
+
 #endif
 
 	/* break now */
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index cda02265732..b4a0de79c06 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -57,7 +57,7 @@ static inline int config_access_valid(struct pci_dn *dn, int where)
 
 static int of_device_available(struct device_node * dn)
 {
-        char * status;
+        const char *status;
 
         status = get_property(dn, "status", NULL);
 
@@ -81,8 +81,7 @@ int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val)
 	if (!config_access_valid(pdn, where))
 		return PCIBIOS_BAD_REGISTER_NUMBER;
 
-	addr = ((where & 0xf00) << 20) | (pdn->busno << 16) |
-		(pdn->devfn << 8) | (where & 0xff);
+	addr = rtas_config_addr(pdn->busno, pdn->devfn, where);
 	buid = pdn->phb->buid;
 	if (buid) {
 		ret = rtas_call(ibm_read_pci_config, 4, 2, &returnval,
@@ -134,8 +133,7 @@ int rtas_write_config(struct pci_dn *pdn, int where, int size, u32 val)
 	if (!config_access_valid(pdn, where))
 		return PCIBIOS_BAD_REGISTER_NUMBER;
 
-	addr = ((where & 0xf00) << 20) | (pdn->busno << 16) |
-		(pdn->devfn << 8) | (where & 0xff);
+	addr = rtas_config_addr(pdn->busno, pdn->devfn, where);
 	buid = pdn->phb->buid;
 	if (buid) {
 		ret = rtas_call(ibm_write_pci_config, 5, 1, NULL, addr,
@@ -178,7 +176,7 @@ struct pci_ops rtas_pci_ops = {
 
 int is_python(struct device_node *dev)
 {
-	char *model = (char *)get_property(dev, "model", NULL);
+	const char *model = get_property(dev, "model", NULL);
 
 	if (model && strstr(model, "Python"))
 		return 1;
@@ -234,7 +232,7 @@ void __init init_pci_config_tokens (void)
 unsigned long __devinit get_phb_buid (struct device_node *phb)
 {
 	int addr_cells;
-	unsigned int *buid_vals;
+	const unsigned int *buid_vals;
 	unsigned int len;
 	unsigned long buid;
 
@@ -247,7 +245,7 @@ unsigned long __devinit get_phb_buid (struct device_node *phb)
 	if (phb->parent->parent)
 		return 0;
 
-	buid_vals = (unsigned int *) get_property(phb, "reg", &len);
+	buid_vals = get_property(phb, "reg", &len);
 	if (buid_vals == NULL)
 		return 0;
 
@@ -264,10 +262,10 @@ unsigned long __devinit get_phb_buid (struct device_node *phb)
 static int phb_set_bus_ranges(struct device_node *dev,
 			      struct pci_controller *phb)
 {
-	int *bus_range;
+	const int *bus_range;
 	unsigned int len;
 
-	bus_range = (int *) get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		return 1;
  	}
@@ -325,15 +323,15 @@ unsigned long __init find_and_init_phbs(void)
 	 * in chosen.
 	 */
 	if (of_chosen) {
-		int *prop;
+		const int *prop;
 
-		prop = (int *)get_property(of_chosen, "linux,pci-probe-only",
-					   NULL);
+		prop = get_property(of_chosen,
+				"linux,pci-probe-only", NULL);
 		if (prop)
 			pci_probe_only = *prop;
 
-		prop = (int *)get_property(of_chosen,
-					   "linux,pci-assign-all-buses", NULL);
+		prop = get_property(of_chosen,
+				"linux,pci-assign-all-buses", NULL);
 		if (prop)
 			pci_assign_all_buses = *prop;
 	}
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 499c3861074..0af3fc1bdcc 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -304,19 +304,21 @@ struct seq_operations cpuinfo_op = {
 void __init check_for_initrd(void)
 {
 #ifdef CONFIG_BLK_DEV_INITRD
-	unsigned long *prop;
+	const unsigned int *prop;
+	int len;
 
 	DBG(" -> check_for_initrd()\n");
 
 	if (of_chosen) {
-		prop = (unsigned long *)get_property(of_chosen,
-				"linux,initrd-start", NULL);
+		prop = get_property(of_chosen, "linux,initrd-start", &len);
 		if (prop != NULL) {
-			initrd_start = (unsigned long)__va(*prop);
-			prop = (unsigned long *)get_property(of_chosen,
-					"linux,initrd-end", NULL);
+			initrd_start = (unsigned long)
+				__va(of_read_ulong(prop, len / 4));
+			prop = get_property(of_chosen,
+					"linux,initrd-end", &len);
 			if (prop != NULL) {
-				initrd_end = (unsigned long)__va(*prop);
+				initrd_end = (unsigned long)
+					__va(of_read_ulong(prop, len / 4));
 				initrd_below_start_ok = 1;
 			} else
 				initrd_start = 0;
@@ -366,15 +368,14 @@ void __init smp_setup_cpu_maps(void)
 	int cpu = 0;
 
 	while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < NR_CPUS) {
-		int *intserv;
+		const int *intserv;
 		int j, len = sizeof(u32), nthreads = 1;
 
-		intserv = (int *)get_property(dn, "ibm,ppc-interrupt-server#s",
-					      &len);
+		intserv = get_property(dn, "ibm,ppc-interrupt-server#s", &len);
 		if (intserv)
 			nthreads = len / sizeof(int);
 		else {
-			intserv = (int *) get_property(dn, "reg", NULL);
+			intserv = get_property(dn, "reg", NULL);
 			if (!intserv)
 				intserv = &cpu;	/* assume logical == phys */
 		}
@@ -395,13 +396,12 @@ void __init smp_setup_cpu_maps(void)
 	if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) &&
 	    (dn = of_find_node_by_path("/rtas"))) {
 		int num_addr_cell, num_size_cell, maxcpus;
-		unsigned int *ireg;
+		const unsigned int *ireg;
 
 		num_addr_cell = prom_n_addr_cells(dn);
 		num_size_cell = prom_n_size_cells(dn);
 
-		ireg = (unsigned int *)
-			get_property(dn, "ibm,lrdr-capacity", NULL);
+		ireg = get_property(dn, "ibm,lrdr-capacity", NULL);
 
 		if (!ireg)
 			goto out;
@@ -444,6 +444,8 @@ void __init smp_setup_cpu_maps(void)
 
 int __initdata do_early_xmon;
 #ifdef CONFIG_XMON
+extern int xmon_no_auto_backtrace;
+
 static int __init early_xmon(char *p)
 {
 	/* ensure xmon is enabled */
@@ -452,6 +454,8 @@ static int __init early_xmon(char *p)
 			xmon_init(1);
 		if (strncmp(p, "off", 3) == 0)
 			xmon_init(0);
+		if (strncmp(p, "nobt", 4) == 0)
+			xmon_no_auto_backtrace = 1;
 		if (strncmp(p, "early", 5) != 0)
 			return 0;
 	}
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index fd1785e4c9b..00d6b8addd7 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -56,7 +56,6 @@
 #include <asm/page.h>
 #include <asm/mmu.h>
 #include <asm/lmb.h>
-#include <asm/iseries/it_lp_naca.h>
 #include <asm/firmware.h>
 #include <asm/xmon.h>
 #include <asm/udbg.h>
@@ -79,10 +78,10 @@ u64 ppc64_pft_size;
  * before we've read this from the device tree.
  */
 struct ppc64_caches ppc64_caches = {
-	.dline_size = 0x80,
-	.log_dline_size = 7,
-	.iline_size = 0x80,
-	.log_iline_size = 7
+	.dline_size = 0x40,
+	.log_dline_size = 6,
+	.iline_size = 0x40,
+	.log_iline_size = 6
 };
 EXPORT_SYMBOL_GPL(ppc64_caches);
 
@@ -107,7 +106,7 @@ static int smt_enabled_cmdline;
 static void check_smt_enabled(void)
 {
 	struct device_node *dn;
-	char *smt_option;
+	const char *smt_option;
 
 	/* Allow the command line to overrule the OF option */
 	if (smt_enabled_cmdline)
@@ -116,7 +115,7 @@ static void check_smt_enabled(void)
 	dn = of_find_node_by_path("/options");
 
 	if (dn) {
-		smt_option = (char *)get_property(dn, "ibm,smt-enabled", NULL);
+		smt_option = get_property(dn, "ibm,smt-enabled", NULL);
 
                 if (smt_option) {
 			if (!strcmp(smt_option, "on"))
@@ -293,7 +292,7 @@ static void __init initialize_cache_info(void)
 		 */
 
 		if ( num_cpus == 1 ) {
-			u32 *sizep, *lsizep;
+			const u32 *sizep, *lsizep;
 			u32 size, lsize;
 			const char *dc, *ic;
 
@@ -308,10 +307,10 @@ static void __init initialize_cache_info(void)
 
 			size = 0;
 			lsize = cur_cpu_spec->dcache_bsize;
-			sizep = (u32 *)get_property(np, "d-cache-size", NULL);
+			sizep = get_property(np, "d-cache-size", NULL);
 			if (sizep != NULL)
 				size = *sizep;
-			lsizep = (u32 *) get_property(np, dc, NULL);
+			lsizep = get_property(np, dc, NULL);
 			if (lsizep != NULL)
 				lsize = *lsizep;
 			if (sizep == 0 || lsizep == 0)
@@ -325,10 +324,10 @@ static void __init initialize_cache_info(void)
 
 			size = 0;
 			lsize = cur_cpu_spec->icache_bsize;
-			sizep = (u32 *)get_property(np, "i-cache-size", NULL);
+			sizep = get_property(np, "i-cache-size", NULL);
 			if (sizep != NULL)
 				size = *sizep;
-			lsizep = (u32 *)get_property(np, ic, NULL);
+			lsizep = get_property(np, ic, NULL);
 			if (lsizep != NULL)
 				lsize = *lsizep;
 			if (sizep == 0 || lsizep == 0)
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index fec228cd016..406f308ddea 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -60,7 +60,7 @@ static int smt_snooze_cmdline;
 static int __init smt_setup(void)
 {
 	struct device_node *options;
-	unsigned int *val;
+	const unsigned int *val;
 	unsigned int cpu;
 
 	if (!cpu_has_feature(CPU_FTR_SMT))
@@ -70,8 +70,7 @@ static int __init smt_setup(void)
 	if (!options)
 		return -ENODEV;
 
-	val = (unsigned int *)get_property(options, "ibm,smt-snooze-delay",
-					   NULL);
+	val = get_property(options, "ibm,smt-snooze-delay", NULL);
 	if (!smt_snooze_cmdline && val) {
 		for_each_possible_cpu(cpu)
 			per_cpu(smt_snooze_delay, cpu) = *val;
@@ -231,7 +230,7 @@ static void register_cpu_online(unsigned int cpu)
 	if (cur_cpu_spec->num_pmcs >= 8)
 		sysdev_create_file(s, &attr_pmc8);
 
-	if (cpu_has_feature(CPU_FTR_SMT))
+	if (cpu_has_feature(CPU_FTR_PURR))
 		sysdev_create_file(s, &attr_purr);
 }
 
@@ -273,7 +272,7 @@ static void unregister_cpu_online(unsigned int cpu)
 	if (cur_cpu_spec->num_pmcs >= 8)
 		sysdev_remove_file(s, &attr_pmc8);
 
-	if (cpu_has_feature(CPU_FTR_SMT))
+	if (cpu_has_feature(CPU_FTR_PURR))
 		sysdev_remove_file(s, &attr_purr);
 }
 #endif /* CONFIG_HOTPLUG_CPU */
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index a124499e65d..7a3c3f791ad 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -860,19 +860,17 @@ EXPORT_SYMBOL(do_settimeofday);
 static int __init get_freq(char *name, int cells, unsigned long *val)
 {
 	struct device_node *cpu;
-	unsigned int *fp;
+	const unsigned int *fp;
 	int found = 0;
 
 	/* The cpu node should have timebase and clock frequency properties */
 	cpu = of_find_node_by_type(NULL, "cpu");
 
 	if (cpu) {
-		fp = (unsigned int *)get_property(cpu, name, NULL);
+		fp = get_property(cpu, name, NULL);
 		if (fp) {
 			found = 1;
-			*val = 0;
-			while (cells--)
-				*val = (*val << 32) | *fp++;
+			*val = of_read_ulong(fp, cells);
 		}
 
 		of_node_put(cpu);
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 9b352bd0a46..d9f10f2fc37 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -598,6 +598,9 @@ static void parse_fpe(struct pt_regs *regs)
 #define INST_STSWI		0x7c0005aa
 #define INST_STSWX		0x7c00052a
 
+#define INST_POPCNTB		0x7c0000f4
+#define INST_POPCNTB_MASK	0xfc0007fe
+
 static int emulate_string_inst(struct pt_regs *regs, u32 instword)
 {
 	u8 rT = (instword >> 21) & 0x1f;
@@ -666,6 +669,23 @@ static int emulate_string_inst(struct pt_regs *regs, u32 instword)
 	return 0;
 }
 
+static int emulate_popcntb_inst(struct pt_regs *regs, u32 instword)
+{
+	u32 ra,rs;
+	unsigned long tmp;
+
+	ra = (instword >> 16) & 0x1f;
+	rs = (instword >> 21) & 0x1f;
+
+	tmp = regs->gpr[rs];
+	tmp = tmp - ((tmp >> 1) & 0x5555555555555555ULL);
+	tmp = (tmp & 0x3333333333333333ULL) + ((tmp >> 2) & 0x3333333333333333ULL);
+	tmp = (tmp + (tmp >> 4)) & 0x0f0f0f0f0f0f0f0fULL;
+	regs->gpr[ra] = tmp;
+
+	return 0;
+}
+
 static int emulate_instruction(struct pt_regs *regs)
 {
 	u32 instword;
@@ -703,6 +723,11 @@ static int emulate_instruction(struct pt_regs *regs)
 	if ((instword & INST_STRING_GEN_MASK) == INST_STRING)
 		return emulate_string_inst(regs, instword);
 
+	/* Emulate the popcntb (Population Count Bytes) instruction. */
+	if ((instword & INST_POPCNTB_MASK) == INST_POPCNTB) {
+		return emulate_popcntb_inst(regs, instword);
+	}
+
 	return -EINVAL;
 }
 
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index fad8580f908..cb87e71eec6 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -77,7 +77,7 @@ static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
 	} else
 #endif
 	{
-		unsigned char *dma_window;
+		const unsigned char *dma_window;
 		struct iommu_table *tbl;
 		unsigned long offset, size;
 
@@ -217,7 +217,7 @@ static void __devinit vio_dev_release(struct device *dev)
 struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node)
 {
 	struct vio_dev *viodev;
-	unsigned int *unit_address;
+	const unsigned int *unit_address;
 
 	/* we need the 'device_type' property, in order to match with drivers */
 	if (of_node->type == NULL) {
@@ -227,7 +227,7 @@ struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node)
 		return NULL;
 	}
 
-	unit_address = (unsigned int *)get_property(of_node, "reg", NULL);
+	unit_address = get_property(of_node, "reg", NULL);
 	if (unit_address == NULL) {
 		printk(KERN_WARNING "%s: node %s missing 'reg'\n",
 				__FUNCTION__,
@@ -249,7 +249,7 @@ struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node)
 	viodev->type = of_node->type;
 	viodev->unit_address = *unit_address;
 	if (firmware_has_feature(FW_FEATURE_ISERIES)) {
-		unit_address = (unsigned int *)get_property(of_node,
+		unit_address = get_property(of_node,
 				"linux,unit_address", NULL);
 		if (unit_address != NULL)
 			viodev->unit_address = *unit_address;
@@ -423,7 +423,7 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp,
 {
 	const struct vio_dev *vio_dev = to_vio_dev(dev);
 	struct device_node *dn = dev->platform_data;
-	char *cp;
+	const char *cp;
 	int length;
 
 	if (!num_envp)
@@ -431,7 +431,7 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp,
 
 	if (!dn)
 		return -ENODEV;
-	cp = (char *)get_property(dn, "compatible", &length);
+	cp = get_property(dn, "compatible", &length);
 	if (!cp)
 		return -ENODEV;
 
@@ -493,11 +493,11 @@ static struct vio_dev *vio_find_name(const char *kobj_name)
  */
 struct vio_dev *vio_find_node(struct device_node *vnode)
 {
-	uint32_t *unit_address;
+	const uint32_t *unit_address;
 	char kobj_name[BUS_ID_SIZE];
 
 	/* construct the kobject name from the device node */
-	unit_address = (uint32_t *)get_property(vnode, "reg", NULL);
+	unit_address = get_property(vnode, "reg", NULL);
 	if (!unit_address)
 		return NULL;
 	snprintf(kobj_name, BUS_ID_SIZE, "%x", *unit_address);
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index ff709645824..336dd191f76 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -14,7 +14,6 @@ endif
 obj-$(CONFIG_PPC64)	+= checksum_64.o copypage_64.o copyuser_64.o \
 			   memcpy_64.o usercopy_64.o mem_64.o string.o \
 			   strcase.o
-obj-$(CONFIG_PPC_ISERIES) += e2a.o
 obj-$(CONFIG_XMON)	+= sstep.o
 
 ifeq ($(CONFIG_PPC64),y)
diff --git a/arch/powerpc/lib/e2a.c b/arch/powerpc/lib/e2a.c
deleted file mode 100644
index 4b72ed8fd50..00000000000
--- a/arch/powerpc/lib/e2a.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- *  EBCDIC to ASCII conversion
- *
- * This function moved here from arch/powerpc/platforms/iseries/viopath.c 
- *
- * (C) Copyright 2000-2004 IBM Corporation
- *
- * This program is free software;  you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) anyu later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <linux/module.h>
-
-unsigned char e2a(unsigned char x)
-{
-	switch (x) {
-	case 0xF0:
-		return '0';
-	case 0xF1:
-		return '1';
-	case 0xF2:
-		return '2';
-	case 0xF3:
-		return '3';
-	case 0xF4:
-		return '4';
-	case 0xF5:
-		return '5';
-	case 0xF6:
-		return '6';
-	case 0xF7:
-		return '7';
-	case 0xF8:
-		return '8';
-	case 0xF9:
-		return '9';
-	case 0xC1:
-		return 'A';
-	case 0xC2:
-		return 'B';
-	case 0xC3:
-		return 'C';
-	case 0xC4:
-		return 'D';
-	case 0xC5:
-		return 'E';
-	case 0xC6:
-		return 'F';
-	case 0xC7:
-		return 'G';
-	case 0xC8:
-		return 'H';
-	case 0xC9:
-		return 'I';
-	case 0xD1:
-		return 'J';
-	case 0xD2:
-		return 'K';
-	case 0xD3:
-		return 'L';
-	case 0xD4:
-		return 'M';
-	case 0xD5:
-		return 'N';
-	case 0xD6:
-		return 'O';
-	case 0xD7:
-		return 'P';
-	case 0xD8:
-		return 'Q';
-	case 0xD9:
-		return 'R';
-	case 0xE2:
-		return 'S';
-	case 0xE3:
-		return 'T';
-	case 0xE4:
-		return 'U';
-	case 0xE5:
-		return 'V';
-	case 0xE6:
-		return 'W';
-	case 0xE7:
-		return 'X';
-	case 0xE8:
-		return 'Y';
-	case 0xE9:
-		return 'Z';
-	}
-	return ' ';
-}
-EXPORT_SYMBOL(e2a);
-
-unsigned char* strne2a(unsigned char *dest, const unsigned char *src, size_t n)
-{
-	int i;
-
-	n = strnlen(src, n);
-
-	for (i = 0; i < n; i++)
-		dest[i] = e2a(src[i]);
-
-	return dest;
-}
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c
index 077bed7dc52..80b482ca30d 100644
--- a/arch/powerpc/lib/locks.c
+++ b/arch/powerpc/lib/locks.c
@@ -23,6 +23,7 @@
 #include <asm/hvcall.h>
 #include <asm/iseries/hv_call.h>
 #include <asm/smp.h>
+#include <asm/firmware.h>
 
 void __spin_yield(raw_spinlock_t *lock)
 {
@@ -39,13 +40,12 @@ void __spin_yield(raw_spinlock_t *lock)
 	rmb();
 	if (lock->slock != lock_value)
 		return;		/* something has changed */
-#ifdef CONFIG_PPC_ISERIES
-	HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc,
-		((u64)holder_cpu << 32) | yield_count);
-#else
-	plpar_hcall_norets(H_CONFER, get_hard_smp_processor_id(holder_cpu),
-			   yield_count);
-#endif
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc,
+			((u64)holder_cpu << 32) | yield_count);
+	else
+		plpar_hcall_norets(H_CONFER,
+			get_hard_smp_processor_id(holder_cpu), yield_count);
 }
 
 /*
@@ -69,13 +69,12 @@ void __rw_yield(raw_rwlock_t *rw)
 	rmb();
 	if (rw->lock != lock_value)
 		return;		/* something has changed */
-#ifdef CONFIG_PPC_ISERIES
-	HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc,
-		((u64)holder_cpu << 32) | yield_count);
-#else
-	plpar_hcall_norets(H_CONFER, get_hard_smp_processor_id(holder_cpu),
-			   yield_count);
-#endif
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc,
+			((u64)holder_cpu << 32) | yield_count);
+	else
+		plpar_hcall_norets(H_CONFER,
+			get_hard_smp_processor_id(holder_cpu), yield_count);
 }
 #endif
 
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index fbe23933f73..6c0f1c7d83e 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -159,12 +159,12 @@ static struct device_node * __cpuinit find_cpu_node(unsigned int cpu)
 {
 	unsigned int hw_cpuid = get_hard_smp_processor_id(cpu);
 	struct device_node *cpu_node = NULL;
-	unsigned int *interrupt_server, *reg;
+	const unsigned int *interrupt_server, *reg;
 	int len;
 
 	while ((cpu_node = of_find_node_by_type(cpu_node, "cpu")) != NULL) {
 		/* Try interrupt server first */
-		interrupt_server = (unsigned int *)get_property(cpu_node,
+		interrupt_server = get_property(cpu_node,
 					"ibm,ppc-interrupt-server#s", &len);
 
 		len = len / sizeof(u32);
@@ -175,8 +175,7 @@ static struct device_node * __cpuinit find_cpu_node(unsigned int cpu)
 					return cpu_node;
 			}
 		} else {
-			reg = (unsigned int *)get_property(cpu_node,
-							   "reg", &len);
+			reg = get_property(cpu_node, "reg", &len);
 			if (reg && (len > 0) && (reg[0] == hw_cpuid))
 				return cpu_node;
 		}
@@ -186,9 +185,9 @@ static struct device_node * __cpuinit find_cpu_node(unsigned int cpu)
 }
 
 /* must hold reference to node during call */
-static int *of_get_associativity(struct device_node *dev)
+static const int *of_get_associativity(struct device_node *dev)
 {
-	return (unsigned int *)get_property(dev, "ibm,associativity", NULL);
+	return get_property(dev, "ibm,associativity", NULL);
 }
 
 /* Returns nid in the range [0..MAX_NUMNODES-1], or -1 if no useful numa
@@ -197,7 +196,7 @@ static int *of_get_associativity(struct device_node *dev)
 static int of_node_to_nid_single(struct device_node *device)
 {
 	int nid = -1;
-	unsigned int *tmp;
+	const unsigned int *tmp;
 
 	if (min_common_depth == -1)
 		goto out;
@@ -255,7 +254,7 @@ EXPORT_SYMBOL_GPL(of_node_to_nid);
 static int __init find_min_common_depth(void)
 {
 	int depth;
-	unsigned int *ref_points;
+	const unsigned int *ref_points;
 	struct device_node *rtas_root;
 	unsigned int len;
 
@@ -270,7 +269,7 @@ static int __init find_min_common_depth(void)
 	 * configuration (should be all 0's) and the second is for a normal
 	 * NUMA configuration.
 	 */
-	ref_points = (unsigned int *)get_property(rtas_root,
+	ref_points = get_property(rtas_root,
 			"ibm,associativity-reference-points", &len);
 
 	if ((len >= 1) && ref_points) {
@@ -297,7 +296,7 @@ static void __init get_n_mem_cells(int *n_addr_cells, int *n_size_cells)
 	of_node_put(memory);
 }
 
-static unsigned long __devinit read_n_cells(int n, unsigned int **buf)
+static unsigned long __devinit read_n_cells(int n, const unsigned int **buf)
 {
 	unsigned long result = 0;
 
@@ -435,15 +434,13 @@ static int __init parse_numa_properties(void)
 		unsigned long size;
 		int nid;
 		int ranges;
-		unsigned int *memcell_buf;
+		const unsigned int *memcell_buf;
 		unsigned int len;
 
-		memcell_buf = (unsigned int *)get_property(memory,
+		memcell_buf = get_property(memory,
 			"linux,usable-memory", &len);
 		if (!memcell_buf || len <= 0)
-			memcell_buf =
-				(unsigned int *)get_property(memory, "reg",
-					&len);
+			memcell_buf = get_property(memory, "reg", &len);
 		if (!memcell_buf || len <= 0)
 			continue;
 
@@ -787,10 +784,10 @@ int hot_add_scn_to_nid(unsigned long scn_addr)
 	while ((memory = of_find_node_by_type(memory, "memory")) != NULL) {
 		unsigned long start, size;
 		int ranges;
-		unsigned int *memcell_buf;
+		const unsigned int *memcell_buf;
 		unsigned int len;
 
-		memcell_buf = (unsigned int *)get_property(memory, "reg", &len);
+		memcell_buf = get_property(memory, "reg", &len);
 		if (!memcell_buf || len <= 0)
 			continue;
 
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index de0c8842415..d3733912adb 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -22,6 +22,8 @@
 #include <asm/paca.h>
 #include <asm/cputable.h>
 #include <asm/cacheflush.h>
+#include <asm/smp.h>
+#include <linux/compiler.h>
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
@@ -50,9 +52,32 @@ static inline unsigned long mk_vsid_data(unsigned long ea, unsigned long flags)
 	return (get_kernel_vsid(ea) << SLB_VSID_SHIFT) | flags;
 }
 
-static inline void create_slbe(unsigned long ea, unsigned long flags,
-			       unsigned long entry)
+static inline void slb_shadow_update(unsigned long esid, unsigned long vsid,
+				     unsigned long entry)
 {
+	/*
+	 * Clear the ESID first so the entry is not valid while we are
+	 * updating it.
+	 */
+	get_slb_shadow()->save_area[entry].esid = 0;
+	barrier();
+	get_slb_shadow()->save_area[entry].vsid = vsid;
+	barrier();
+	get_slb_shadow()->save_area[entry].esid = esid;
+
+}
+
+static inline void create_shadowed_slbe(unsigned long ea, unsigned long flags,
+					unsigned long entry)
+{
+	/*
+	 * Updating the shadow buffer before writing the SLB ensures
+	 * we don't get a stale entry here if we get preempted by PHYP
+	 * between these two statements.
+	 */
+	slb_shadow_update(mk_esid_data(ea, entry), mk_vsid_data(ea, flags),
+			  entry);
+
 	asm volatile("slbmte  %0,%1" :
 		     : "r" (mk_vsid_data(ea, flags)),
 		       "r" (mk_esid_data(ea, entry))
@@ -77,6 +102,10 @@ void slb_flush_and_rebolt(void)
 	if ((ksp_esid_data & ESID_MASK) == PAGE_OFFSET)
 		ksp_esid_data &= ~SLB_ESID_V;
 
+	/* Only third entry (stack) may change here so only resave that */
+	slb_shadow_update(ksp_esid_data,
+			  mk_vsid_data(ksp_esid_data, lflags), 2);
+
 	/* We need to do this all in asm, so we're sure we don't touch
 	 * the stack between the slbia and rebolting it. */
 	asm volatile("isync\n"
@@ -209,9 +238,9 @@ void slb_initialize(void)
 	asm volatile("isync":::"memory");
 	asm volatile("slbmte  %0,%0"::"r" (0) : "memory");
 	asm volatile("isync; slbia; isync":::"memory");
-	create_slbe(PAGE_OFFSET, lflags, 0);
+	create_shadowed_slbe(PAGE_OFFSET, lflags, 0);
 
-	create_slbe(VMALLOC_START, vflags, 1);
+	create_shadowed_slbe(VMALLOC_START, vflags, 1);
 
 	/* We don't bolt the stack for the time being - we're in boot,
 	 * so the stack is in the bolted segment.  By the time it goes
diff --git a/arch/powerpc/mm/tlb_64.c b/arch/powerpc/mm/tlb_64.c
index f6eef78efd2..b58baa65c4a 100644
--- a/arch/powerpc/mm/tlb_64.c
+++ b/arch/powerpc/mm/tlb_64.c
@@ -146,6 +146,7 @@ void hpte_update(struct mm_struct *mm, unsigned long addr,
 		psize = mmu_huge_psize;
 #else
 		BUG();
+		psize = pte_pagesize_index(pte); /* shutup gcc */
 #endif
 	} else
 		psize = pte_pagesize_index(pte);
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c
index cf3967a66fb..969fbb6d8c4 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_itx.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c
@@ -60,8 +60,8 @@ static void __init mpc834x_itx_setup_arch(void)
 
 	np = of_find_node_by_type(NULL, "cpu");
 	if (np != 0) {
-		unsigned int *fp =
-		    (int *)get_property(np, "clock-frequency", NULL);
+		const unsigned int *fp =
+			get_property(np, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
diff --git a/arch/powerpc/platforms/83xx/mpc834x_sys.c b/arch/powerpc/platforms/83xx/mpc834x_sys.c
index 32df239d1c4..677196187a4 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_sys.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_sys.c
@@ -57,8 +57,8 @@ static void __init mpc834x_sys_setup_arch(void)
 
 	np = of_find_node_by_type(NULL, "cpu");
 	if (np != 0) {
-		unsigned int *fp =
-		    (int *)get_property(np, "clock-frequency", NULL);
+		const unsigned int *fp =
+			get_property(np, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
diff --git a/arch/powerpc/platforms/83xx/pci.c b/arch/powerpc/platforms/83xx/pci.c
index 5d84a9ccd10..4557ac5255c 100644
--- a/arch/powerpc/platforms/83xx/pci.c
+++ b/arch/powerpc/platforms/83xx/pci.c
@@ -59,7 +59,7 @@ int __init add_bridge(struct device_node *dev)
 	int len;
 	struct pci_controller *hose;
 	struct resource rsrc;
-	int *bus_range;
+	const int *bus_range;
 	int primary = 1, has_address = 0;
 	phys_addr_t immr = get_immrbase();
 
@@ -69,7 +69,7 @@ int __init add_bridge(struct device_node *dev)
 	has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
 
 	/* Get bus range if any */
-	bus_range = (int *)get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, assume"
 		       " bus 0\n", dev->full_name);
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 9d2acfbbecc..cae6b73357d 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -121,9 +121,9 @@ static void __init mpc85xx_ads_setup_arch(void)
 
 	cpu = of_find_node_by_type(NULL, "cpu");
 	if (cpu != 0) {
-		unsigned int *fp;
+		const unsigned int *fp;
 
-		fp = (int *)get_property(cpu, "clock-frequency", NULL);
+		fp = get_property(cpu, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index 1d357d32a29..4c1fede6470 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -241,9 +241,9 @@ mpc85xx_cds_setup_arch(void)
 
 	cpu = of_find_node_by_type(NULL, "cpu");
 	if (cpu != 0) {
-		unsigned int *fp;
+		const unsigned int *fp;
 
-		fp = (int *)get_property(cpu, "clock-frequency", NULL);
+		fp = get_property(cpu, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
diff --git a/arch/powerpc/platforms/85xx/pci.c b/arch/powerpc/platforms/85xx/pci.c
index 1d51f3242ab..05930eeb6e7 100644
--- a/arch/powerpc/platforms/85xx/pci.c
+++ b/arch/powerpc/platforms/85xx/pci.c
@@ -41,7 +41,7 @@ int __init add_bridge(struct device_node *dev)
 	int len;
 	struct pci_controller *hose;
 	struct resource rsrc;
-	int *bus_range;
+	const int *bus_range;
 	int primary = 1, has_address = 0;
 	phys_addr_t immr = get_immrbase();
 
@@ -51,7 +51,7 @@ int __init add_bridge(struct device_node *dev)
 	has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
 
 	/* Get bus range if any */
-	bus_range = (int *) get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, assume"
 		       " bus 0\n", dev->full_name);
diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 5e583cf3878..b637e8157f7 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -347,9 +347,9 @@ mpc86xx_hpcn_setup_arch(void)
 
 	np = of_find_node_by_type(NULL, "cpu");
 	if (np != 0) {
-		unsigned int *fp;
+		const unsigned int *fp;
 
-		fp = (int *)get_property(np, "clock-frequency", NULL);
+		fp = get_property(np, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
diff --git a/arch/powerpc/platforms/86xx/pci.c b/arch/powerpc/platforms/86xx/pci.c
index a8c8f0a4405..481e18ed5be 100644
--- a/arch/powerpc/platforms/86xx/pci.c
+++ b/arch/powerpc/platforms/86xx/pci.c
@@ -153,7 +153,7 @@ int __init add_bridge(struct device_node *dev)
 	int len;
 	struct pci_controller *hose;
 	struct resource rsrc;
-	int *bus_range;
+	const int *bus_range;
 	int has_address = 0;
 	int primary = 0;
 
@@ -163,7 +163,7 @@ int __init add_bridge(struct device_node *dev)
 	has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
 
 	/* Get bus range if any */
-	bus_range = (int *) get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int))
 		printk(KERN_WARNING "Can't get bus-range for %s, assume"
 		       " bus 0\n", dev->full_name);
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index 5cf46dc5789..e58fa953a50 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -13,5 +13,6 @@ obj-$(CONFIG_PPC_86xx)		+= 86xx/
 obj-$(CONFIG_PPC_PSERIES)	+= pseries/
 obj-$(CONFIG_PPC_ISERIES)	+= iseries/
 obj-$(CONFIG_PPC_MAPLE)		+= maple/
+obj-$(CONFIG_PPC_PASEMI)		+= pasemi/
 obj-$(CONFIG_PPC_CELL)		+= cell/
 obj-$(CONFIG_EMBEDDED6xx)	+= embedded6xx/
diff --git a/arch/powerpc/platforms/cell/cbe_regs.c b/arch/powerpc/platforms/cell/cbe_regs.c
index ce696c1cca7..3f3859d12e0 100644
--- a/arch/powerpc/platforms/cell/cbe_regs.c
+++ b/arch/powerpc/platforms/cell/cbe_regs.c
@@ -97,7 +97,7 @@ void __init cbe_regs_init(void)
 		struct cbe_regs_map *map = &cbe_regs_maps[cbe_regs_map_count++];
 
 		/* That hack must die die die ! */
-		struct address_prop {
+		const struct address_prop {
 			unsigned long address;
 			unsigned int len;
 		} __attribute__((packed)) *prop;
@@ -114,13 +114,11 @@ void __init cbe_regs_init(void)
 			if (cbe_thread_map[i].cpu_node == cpu)
 				cbe_thread_map[i].regs = map;
 
-		prop = (struct address_prop *)get_property(cpu, "pervasive",
-							   NULL);
+		prop = get_property(cpu, "pervasive", NULL);
 		if (prop != NULL)
 			map->pmd_regs = ioremap(prop->address, prop->len);
 
-		prop = (struct address_prop *)get_property(cpu, "iic",
-							   NULL);
+		prop = get_property(cpu, "iic", NULL);
 		if (prop != NULL)
 			map->iic_regs = ioremap(prop->address, prop->len);
 	}
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index d7bbb61109f..6b57a47c5d3 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -89,17 +89,17 @@ static struct irq_chip iic_chip = {
 /* Get an IRQ number from the pending state register of the IIC */
 static unsigned int iic_get_irq(struct pt_regs *regs)
 {
-  	struct cbe_iic_pending_bits pending;
- 	struct iic *iic;
-
- 	iic = &__get_cpu_var(iic);
- 	*(unsigned long *) &pending =
- 		in_be64((unsigned long __iomem *) &iic->regs->pending_destr);
- 	iic->eoi_stack[++iic->eoi_ptr] = pending.prio;
- 	BUG_ON(iic->eoi_ptr > 15);
+	struct cbe_iic_pending_bits pending;
+	struct iic *iic;
+
+	iic = &__get_cpu_var(iic);
+	*(unsigned long *) &pending =
+		in_be64((unsigned long __iomem *) &iic->regs->pending_destr);
+	iic->eoi_stack[++iic->eoi_ptr] = pending.prio;
+	BUG_ON(iic->eoi_ptr > 15);
 	if (pending.flags & CBE_IIC_IRQ_VALID)
 		return irq_linear_revmap(iic->host,
- 					 iic_pending_to_hwnum(pending));
+					 iic_pending_to_hwnum(pending));
 	return NO_IRQ;
 }
 
@@ -250,16 +250,15 @@ static int __init setup_iic(void)
 	struct resource r0, r1;
 	struct irq_host *host;
 	int found = 0;
- 	u32 *np;
+	const u32 *np;
 
 	for (dn = NULL;
 	     (dn = of_find_node_by_name(dn,"interrupt-controller")) != NULL;) {
 		if (!device_is_compatible(dn,
 				     "IBM,CBEA-Internal-Interrupt-Controller"))
 			continue;
- 		np = (u32 *)get_property(dn, "ibm,interrupt-server-ranges",
-					 NULL);
- 		if (np == NULL) {
+		np = get_property(dn, "ibm,interrupt-server-ranges", NULL);
+		if (np == NULL) {
 			printk(KERN_WARNING "IIC: CPU association not found\n");
 			of_node_put(dn);
 			return -ENODEV;
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index a35004e14c6..d2b20eba5b8 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -308,15 +308,16 @@ static void cell_do_map_iommu(struct cell_iommu *iommu,
 
 static void iommu_devnode_setup(struct device_node *d)
 {
-	unsigned int *ioid;
-	unsigned long *dma_window, map_start, map_size, token;
+	const unsigned int *ioid;
+	unsigned long map_start, map_size, token;
+	const unsigned long *dma_window;
 	struct cell_iommu *iommu;
 
-	ioid = (unsigned int *)get_property(d, "ioid", NULL);
+	ioid = get_property(d, "ioid", NULL);
 	if (!ioid)
 		pr_debug("No ioid entry found !\n");
 
-	dma_window = (unsigned long *)get_property(d, "ibm,dma-window", NULL);
+	dma_window = get_property(d, "ibm,dma-window", NULL);
 	if (!dma_window)
 		pr_debug("No ibm,dma-window entry found !\n");
 
@@ -371,8 +372,9 @@ static int cell_map_iommu_hardcoded(int num_nodes)
 
 static int cell_map_iommu(void)
 {
-	unsigned int num_nodes = 0, *node_id;
-	unsigned long *base, *mmio_base;
+	unsigned int num_nodes = 0;
+	const unsigned int *node_id;
+	const unsigned long *base, *mmio_base;
 	struct device_node *dn;
 	struct cell_iommu *iommu = NULL;
 
@@ -381,7 +383,7 @@ static int cell_map_iommu(void)
 	for(dn = of_find_node_by_type(NULL, "cpu");
 	    dn;
 	    dn = of_find_node_by_type(dn, "cpu")) {
-		node_id = (unsigned int *)get_property(dn, "node-id", NULL);
+		node_id = get_property(dn, "node-id", NULL);
 
 		if (num_nodes < *node_id)
 			num_nodes = *node_id;
@@ -396,9 +398,9 @@ static int cell_map_iommu(void)
 	    dn;
 	    dn = of_find_node_by_type(dn, "cpu")) {
 
-		node_id = (unsigned int *)get_property(dn, "node-id", NULL);
-		base = (unsigned long *)get_property(dn, "ioc-cache", NULL);
-		mmio_base = (unsigned long *)get_property(dn, "ioc-translation", NULL);
+		node_id = get_property(dn, "node-id", NULL);
+		base = get_property(dn, "ioc-cache", NULL);
+		mmio_base = get_property(dn, "ioc-translation", NULL);
 
 		if (!base || !mmio_base || !node_id)
 			return cell_map_iommu_hardcoded(num_nodes);
diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c
index 282987d6d4a..22c228a49c3 100644
--- a/arch/powerpc/platforms/cell/setup.c
+++ b/arch/powerpc/platforms/cell/setup.c
@@ -150,10 +150,6 @@ static int __init cell_probe(void)
 	    !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
 		return 0;
 
-#ifdef CONFIG_UDBG_RTAS_CONSOLE
-	udbg_init_rtas_console();
-#endif
-
 	hpte_init_native();
 
 	return 1;
diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c
index 46aef064074..1c0acbad742 100644
--- a/arch/powerpc/platforms/cell/smp.c
+++ b/arch/powerpc/platforms/cell/smp.c
@@ -57,7 +57,7 @@
  */
 static cpumask_t of_spin_map;
 
-extern void pSeries_secondary_smp_init(unsigned long);
+extern void generic_secondary_smp_init(unsigned long);
 
 /**
  * smp_startup_cpu() - start the given cpu
@@ -74,7 +74,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 {
 	int status;
 	unsigned long start_here = __pa((u32)*((unsigned long *)
-					       pSeries_secondary_smp_init));
+					       generic_secondary_smp_init));
 	unsigned int pcpu;
 	int start_cpu;
 
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index 15217bb0402..742a03282b4 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -240,7 +240,7 @@ static void spider_irq_cascade(unsigned int irq, struct irq_desc *desc,
 static unsigned int __init spider_find_cascade_and_node(struct spider_pic *pic)
 {
 	unsigned int virq;
-	u32 *imap, *tmp;
+	const u32 *imap, *tmp;
 	int imaplen, intsize, unit;
 	struct device_node *iic;
 	struct irq_host *iic_host;
@@ -258,25 +258,25 @@ static unsigned int __init spider_find_cascade_and_node(struct spider_pic *pic)
 #endif
 
 	/* Now do the horrible hacks */
-	tmp = (u32 *)get_property(pic->of_node, "#interrupt-cells", NULL);
+	tmp = get_property(pic->of_node, "#interrupt-cells", NULL);
 	if (tmp == NULL)
 		return NO_IRQ;
 	intsize = *tmp;
-	imap = (u32 *)get_property(pic->of_node, "interrupt-map", &imaplen);
+	imap = get_property(pic->of_node, "interrupt-map", &imaplen);
 	if (imap == NULL || imaplen < (intsize + 1))
 		return NO_IRQ;
 	iic = of_find_node_by_phandle(imap[intsize]);
 	if (iic == NULL)
 		return NO_IRQ;
 	imap += intsize + 1;
-	tmp = (u32 *)get_property(iic, "#interrupt-cells", NULL);
+	tmp = get_property(iic, "#interrupt-cells", NULL);
 	if (tmp == NULL)
 		return NO_IRQ;
 	intsize = *tmp;
 	/* Assume unit is last entry of interrupt specifier */
 	unit = imap[intsize - 1];
 	/* Ok, we have a unit, now let's try to get the node */
-	tmp = (u32 *)get_property(iic, "ibm,interrupt-server-ranges", NULL);
+	tmp = get_property(iic, "ibm,interrupt-server-ranges", NULL);
 	if (tmp == NULL) {
 		of_node_put(iic);
 		return NO_IRQ;
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index d06042deb02..3bd36d46ab4 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -488,10 +488,10 @@ int spu_irq_class_1_bottom(struct spu *spu)
 
 static int __init find_spu_node_id(struct device_node *spe)
 {
-	unsigned int *id;
+	const unsigned int *id;
 	struct device_node *cpu;
 	cpu = spe->parent->parent;
-	id = (unsigned int *)get_property(cpu, "node-id", NULL);
+	id = get_property(cpu, "node-id", NULL);
 	return id ? *id : 0;
 }
 
@@ -500,7 +500,7 @@ static int __init cell_spuprop_present(struct spu *spu, struct device_node *spe,
 {
 	static DEFINE_MUTEX(add_spumem_mutex);
 
-	struct address_prop {
+	const struct address_prop {
 		unsigned long address;
 		unsigned int len;
 	} __attribute__((packed)) *p;
@@ -511,7 +511,7 @@ static int __init cell_spuprop_present(struct spu *spu, struct device_node *spe,
 	struct zone *zone;
 	int ret;
 
-	p = (void*)get_property(spe, prop, &proplen);
+	p = get_property(spe, prop, &proplen);
 	WARN_ON(proplen != sizeof (*p));
 
 	start_pfn = p->address >> PAGE_SHIFT;
@@ -531,12 +531,12 @@ static int __init cell_spuprop_present(struct spu *spu, struct device_node *spe,
 static void __iomem * __init map_spe_prop(struct spu *spu,
 		struct device_node *n, const char *name)
 {
-	struct address_prop {
+	const struct address_prop {
 		unsigned long address;
 		unsigned int len;
 	} __attribute__((packed)) *prop;
 
-	void *p;
+	const void *p;
 	int proplen;
 	void* ret = NULL;
 	int err = 0;
@@ -570,14 +570,14 @@ static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
 {
 	struct irq_host *host;
 	unsigned int isrc;
-	u32 *tmp;
+	const u32 *tmp;
 
 	host = iic_get_irq_host(spu->node);
 	if (host == NULL)
 		return -ENODEV;
 
 	/* Get the interrupt source from the device-tree */
-	tmp = (u32 *)get_property(np, "isrc", NULL);
+	tmp = get_property(np, "isrc", NULL);
 	if (!tmp)
 		return -ENODEV;
 	spu->isrc = isrc = tmp[0];
@@ -593,7 +593,7 @@ static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
 
 static int __init spu_map_device(struct spu *spu, struct device_node *node)
 {
-	char *prop;
+	const char *prop;
 	int ret;
 
 	ret = -ENODEV;
diff --git a/arch/powerpc/platforms/chrp/nvram.c b/arch/powerpc/platforms/chrp/nvram.c
index 150f67d6f90..0dd4a64757d 100644
--- a/arch/powerpc/platforms/chrp/nvram.c
+++ b/arch/powerpc/platforms/chrp/nvram.c
@@ -67,13 +67,14 @@ static void chrp_nvram_write(int addr, unsigned char val)
 void __init chrp_nvram_init(void)
 {
 	struct device_node *nvram;
-	unsigned int *nbytes_p, proplen;
+	const unsigned int *nbytes_p;
+	unsigned int proplen;
 
 	nvram = of_find_node_by_type(NULL, "nvram");
 	if (nvram == NULL)
 		return;
 
-	nbytes_p = (unsigned int *)get_property(nvram, "#bytes", &proplen);
+	nbytes_p = get_property(nvram, "#bytes", &proplen);
 	if (nbytes_p == NULL || proplen != sizeof(unsigned int))
 		return;
 
diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index 6802cdc3168..0f4340506c7 100644
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -214,11 +214,11 @@ void __init
 chrp_find_bridges(void)
 {
 	struct device_node *dev;
-	int *bus_range;
+	const int *bus_range;
 	int len, index = -1;
 	struct pci_controller *hose;
-	unsigned int *dma;
-	char *model, *machine;
+	const unsigned int *dma;
+	const char *model, *machine;
 	int is_longtrail = 0, is_mot = 0, is_pegasos = 0;
 	struct device_node *root = find_path_device("/");
 	struct resource r;
@@ -246,7 +246,7 @@ chrp_find_bridges(void)
 			       dev->full_name);
 			continue;
 		}
-		bus_range = (int *) get_property(dev, "bus-range", &len);
+		bus_range = get_property(dev, "bus-range", &len);
 		if (bus_range == NULL || len < 2 * sizeof(int)) {
 			printk(KERN_WARNING "Can't get bus-range for %s\n",
 				dev->full_name);
@@ -257,7 +257,7 @@ chrp_find_bridges(void)
 		else
 			printk(KERN_INFO "PCI buses %d..%d",
 			       bus_range[0], bus_range[1]);
-		printk(" controlled by %s", dev->type);
+		printk(" controlled by %s", dev->full_name);
 		if (!is_longtrail)
 			printk(" at %llx", (unsigned long long)r.start);
 		printk("\n");
@@ -289,6 +289,19 @@ chrp_find_bridges(void)
 			setup_indirect_pci(hose, 0xfec00cf8, 0xfee00cfc);
 		} else if (is_pegasos == 2) {
 			setup_peg2(hose, dev);
+		} else if (!strncmp(model, "IBM,CPC710", 10)) {
+			setup_indirect_pci(hose,
+					   r.start + 0x000f8000,
+					   r.start + 0x000f8010);
+			if (index == 0) {
+				dma = get_property(dev, "system-dma-base",&len);
+				if (dma && len >= sizeof(*dma)) {
+					dma = (unsigned int *)
+						(((unsigned long)dma) +
+						len - sizeof(*dma));
+						pci_dram_offset = *dma;
+				}
+			}
 		} else {
 			printk("No methods for %s (model %s), using RTAS\n",
 			       dev->full_name, model);
@@ -299,15 +312,35 @@ chrp_find_bridges(void)
 
 		/* check the first bridge for a property that we can
 		   use to set pci_dram_offset */
-		dma = (unsigned int *)
-			get_property(dev, "ibm,dma-ranges", &len);
+		dma = get_property(dev, "ibm,dma-ranges", &len);
 		if (index == 0 && dma != NULL && len >= 6 * sizeof(*dma)) {
 			pci_dram_offset = dma[2] - dma[3];
 			printk("pci_dram_offset = %lx\n", pci_dram_offset);
 		}
 	}
+}
+
+/* SL82C105 IDE Control/Status Register */
+#define SL82C105_IDECSR                0x40
+
+/* Fixup for Winbond ATA quirk, required for briq */
+void chrp_pci_fixup_winbond_ata(struct pci_dev *sl82c105)
+{
+	u8 progif;
 
-	/* Do not fixup interrupts from OF tree on pegasos */
-	if (is_pegasos)
-		ppc_md.pcibios_fixup = NULL;
+	/* If non-briq machines need that fixup too, please speak up */
+	if (!machine_is(chrp) || _chrp_type != _CHRP_briq)
+		return;
+
+	if ((sl82c105->class & 5) != 5) {
+		printk("W83C553: Switching SL82C105 IDE to PCI native mode\n");
+		/* Enable SL82C105 PCI native IDE mode */
+		pci_read_config_byte(sl82c105, PCI_CLASS_PROG, &progif);
+		pci_write_config_byte(sl82c105, PCI_CLASS_PROG, progif | 0x05);
+		sl82c105->class |= 0x05;
+		/* Disable SL82C105 second port */
+		pci_write_config_word(sl82c105, SL82C105_IDECSR, 0x0003);
+	}
 }
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105,
+		chrp_pci_fixup_winbond_ata);
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 9c08ff32229..488dbd9b51a 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -74,6 +74,9 @@ extern irqreturn_t xmon_irq(int, void *, struct pt_regs *);
 
 extern unsigned long loops_per_jiffy;
 
+/* To be replaced by RTAS when available */
+static unsigned int *briq_SPOR;
+
 #ifdef CONFIG_SMP
 extern struct smp_ops_t chrp_smp_ops;
 #endif
@@ -92,6 +95,15 @@ static const char *gg2_cachemodes[4] = {
 	"Disabled", "Write-Through", "Copy-Back", "Transparent Mode"
 };
 
+static const char *chrp_names[] = {
+	"Unknown",
+	"","","",
+	"Motorola",
+	"IBM or Longtrail",
+	"Genesi Pegasos",
+	"Total Impact Briq"
+};
+
 void chrp_show_cpuinfo(struct seq_file *m)
 {
 	int i, sdramen;
@@ -214,8 +226,7 @@ static void __init pegasos_set_l2cr(void)
 	/* Enable L2 cache if needed */
 	np = find_type_devices("cpu");
 	if (np != NULL) {
-		unsigned int *l2cr = (unsigned int *)
-			get_property (np, "l2cr", NULL);
+		const unsigned int *l2cr = get_property(np, "l2cr", NULL);
 		if (l2cr == NULL) {
 			printk ("Pegasos l2cr : no cpu l2cr property found\n");
 			return;
@@ -229,10 +240,18 @@ static void __init pegasos_set_l2cr(void)
 	}
 }
 
+static void briq_restart(char *cmd)
+{
+	local_irq_disable();
+	if (briq_SPOR)
+		out_be32(briq_SPOR, 0);
+	for(;;);
+}
+
 void __init chrp_setup_arch(void)
 {
 	struct device_node *root = find_path_device ("/");
-	char *machine = NULL;
+	const char *machine = NULL;
 
 	/* init to some ~sane value until calibrate_delay() runs */
 	loops_per_jiffy = 50000000/HZ;
@@ -245,11 +264,16 @@ void __init chrp_setup_arch(void)
 		_chrp_type = _CHRP_IBM;
 	} else if (machine && strncmp(machine, "MOT", 3) == 0) {
 		_chrp_type = _CHRP_Motorola;
+	} else if (machine && strncmp(machine, "TotalImpact,BRIQ-1", 18) == 0) {
+		_chrp_type = _CHRP_briq;
+		/* Map the SPOR register on briq and change the restart hook */
+		briq_SPOR = (unsigned int *)ioremap(0xff0000e8, 4);
+		ppc_md.restart = briq_restart;
 	} else {
 		/* Let's assume it is an IBM chrp if all else fails */
 		_chrp_type = _CHRP_IBM;
 	}
-	printk("chrp type = %x\n", _chrp_type);
+	printk("chrp type = %x [%s]\n", _chrp_type, chrp_names[_chrp_type]);
 
 	rtas_initialize();
 	if (rtas_token("display-character") >= 0)
@@ -328,7 +352,7 @@ static void __init chrp_find_openpic(void)
 	struct device_node *np, *root;
 	int len, i, j;
 	int isu_size, idu_size;
-	unsigned int *iranges, *opprop = NULL;
+	const unsigned int *iranges, *opprop = NULL;
 	int oplen = 0;
 	unsigned long opaddr;
 	int na = 1;
@@ -338,8 +362,7 @@ static void __init chrp_find_openpic(void)
 		return;
 	root = of_find_node_by_path("/");
 	if (root) {
-		opprop = (unsigned int *) get_property
-			(root, "platform-open-pic", &oplen);
+		opprop = get_property(root, "platform-open-pic", &oplen);
 		na = prom_n_addr_cells(root);
 	}
 	if (opprop && oplen >= na * sizeof(unsigned int)) {
@@ -356,7 +379,7 @@ static void __init chrp_find_openpic(void)
 
 	printk(KERN_INFO "OpenPIC at %lx\n", opaddr);
 
-	iranges = (unsigned int *) get_property(np, "interrupt-ranges", &len);
+	iranges = get_property(np, "interrupt-ranges", &len);
 	if (iranges == NULL)
 		len = 0;	/* non-distributed mpic */
 	else
@@ -442,8 +465,8 @@ static void __init chrp_find_8259(void)
 	 * from anyway
 	 */
 	for (np = find_devices("pci"); np != NULL; np = np->next) {
-		unsigned int *addrp = (unsigned int *)
-			get_property(np, "8259-interrupt-acknowledge", NULL);
+		const unsigned int *addrp = get_property(np,
+				"8259-interrupt-acknowledge", NULL);
 
 		if (addrp == NULL)
 			continue;
@@ -502,7 +525,7 @@ void __init
 chrp_init2(void)
 {
 	struct device_node *device;
-	unsigned int *p = NULL;
+	const unsigned int *p = NULL;
 
 #ifdef CONFIG_NVRAM
 	chrp_nvram_init();
@@ -520,8 +543,7 @@ chrp_init2(void)
 	 */
 	device = find_devices("rtas");
 	if (device)
-		p = (unsigned int *) get_property
-			(device, "rtas-event-scan-rate", NULL);
+		p = get_property(device, "rtas-event-scan-rate", NULL);
 	if (p && *p) {
 		/*
 		 * Arrange to call chrp_event_scan at least *p times
diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
index 5d393eb9493..e4f2b9df5e1 100644
--- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
+++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
@@ -95,7 +95,7 @@ void mpc7448_hpc2_fixup_irq(struct pci_dev *dev)
 {
 	struct pci_controller *hose;
 	struct device_node *node;
-	unsigned int *interrupt;
+	const unsigned int *interrupt;
 	int busnr;
 	int len;
 	u8 slot;
@@ -112,7 +112,7 @@ void mpc7448_hpc2_fixup_irq(struct pci_dev *dev)
 	if (!node)
 		printk(KERN_ERR "No pci node found\n");
 
-	interrupt = (unsigned int *) get_property(node, "interrupt-map", &len);
+	interrupt = get_property(node, "interrupt-map", &len);
 	slot = find_slot_by_devfn(interrupt, dev->devfn);
 	pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
 	if (pin == 0 || pin > 4)
@@ -141,9 +141,9 @@ static void __init mpc7448_hpc2_setup_arch(void)
 
 	cpu = of_find_node_by_type(NULL, "cpu");
 	if (cpu != 0) {
-		unsigned int *fp;
+		const unsigned int *fp;
 
-		fp = (int *)get_property(cpu, "clock-frequency", NULL);
+		fp = get_property(cpu, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
diff --git a/arch/powerpc/platforms/iseries/Kconfig b/arch/powerpc/platforms/iseries/Kconfig
index 3d957a30c8c..887b68804e6 100644
--- a/arch/powerpc/platforms/iseries/Kconfig
+++ b/arch/powerpc/platforms/iseries/Kconfig
@@ -3,13 +3,17 @@ menu "iSeries device drivers"
 	depends on PPC_ISERIES
 
 config VIOCONS
-	tristate "iSeries Virtual Console Support"
+	tristate "iSeries Virtual Console Support (Obsolete)"
+	help
+	  This is the old virtual console driver for legacy iSeries.
+	  You should use the iSeries Hypervisor Virtual Console
+	  support instead.
 
 config VIODASD
 	tristate "iSeries Virtual I/O disk support"
 	help
 	  If you are running on an iSeries system and you want to use
- 	  virtual disks created and managed by OS/400, say Y.
+	  virtual disks created and managed by OS/400, say Y.
 
 config VIOCD
 	tristate "iSeries Virtual I/O CD support"
diff --git a/arch/powerpc/platforms/iseries/dt.c b/arch/powerpc/platforms/iseries/dt.c
index d194140c1eb..e305deee7f4 100644
--- a/arch/powerpc/platforms/iseries/dt.c
+++ b/arch/powerpc/platforms/iseries/dt.c
@@ -1,5 +1,6 @@
 /*
- *    Copyright (c) 2005-2006 Michael Ellerman, IBM Corporation
+ *    Copyright (C) 2005-2006 Michael Ellerman, IBM Corporation
+ *    Copyright (C) 2000-2004, IBM Corporation
  *
  *    Description:
  *      This file contains all the routines to build a flattened device
@@ -33,13 +34,13 @@
 #include <asm/iseries/hv_types.h>
 #include <asm/iseries/hv_lp_config.h>
 #include <asm/iseries/hv_call_xm.h>
-#include <asm/iseries/it_exp_vpd_panel.h>
 #include <asm/udbg.h>
 
 #include "processor_vpd.h"
 #include "call_hpt.h"
 #include "call_pci.h"
 #include "pci.h"
+#include "it_exp_vpd_panel.h"
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
@@ -76,6 +77,43 @@ static char __initdata device_type_pci[] = "pci";
 static char __initdata device_type_vdevice[] = "vdevice";
 static char __initdata device_type_vscsi[] = "vscsi";
 
+
+/* EBCDIC to ASCII conversion routines */
+
+static unsigned char __init e2a(unsigned char x)
+{
+	switch (x) {
+	case 0x81 ... 0x89:
+		return x - 0x81 + 'a';
+	case 0x91 ... 0x99:
+		return x - 0x91 + 'j';
+	case 0xA2 ... 0xA9:
+		return x - 0xA2 + 's';
+	case 0xC1 ... 0xC9:
+		return x - 0xC1 + 'A';
+	case 0xD1 ... 0xD9:
+		return x - 0xD1 + 'J';
+	case 0xE2 ... 0xE9:
+		return x - 0xE2 + 'S';
+	case 0xF0 ... 0xF9:
+		return x - 0xF0 + '0';
+	}
+	return ' ';
+}
+
+static unsigned char * __init strne2a(unsigned char *dest,
+		const unsigned char *src, size_t n)
+{
+	int i;
+
+	n = strnlen(src, n);
+
+	for (i = 0; i < n; i++)
+		dest[i] = e2a(src[i]);
+
+	return dest;
+}
+
 static struct iseries_flat_dt * __init dt_init(void)
 {
 	struct iseries_flat_dt *dt;
@@ -298,7 +336,8 @@ static void __init dt_vdevices(struct iseries_flat_dt *dt)
 	dt_prop_u32(dt, "#address-cells", 1);
 	dt_prop_u32(dt, "#size-cells", 0);
 
-	dt_do_vdevice(dt, "vty", reg, -1, device_type_serial, NULL, 1);
+	dt_do_vdevice(dt, "vty", reg, -1, device_type_serial,
+			"IBM,iSeries-vty", 1);
 	reg++;
 
 	dt_do_vdevice(dt, "v-scsi", reg, -1, device_type_vscsi,
diff --git a/arch/powerpc/platforms/iseries/hvlpconfig.c b/arch/powerpc/platforms/iseries/hvlpconfig.c
index 663a1affb4b..f0475f0b185 100644
--- a/arch/powerpc/platforms/iseries/hvlpconfig.c
+++ b/arch/powerpc/platforms/iseries/hvlpconfig.c
@@ -18,9 +18,22 @@
 
 #include <linux/module.h>
 #include <asm/iseries/hv_lp_config.h>
+#include "it_lp_naca.h"
 
 HvLpIndex HvLpConfig_getLpIndex_outline(void)
 {
 	return HvLpConfig_getLpIndex();
 }
 EXPORT_SYMBOL(HvLpConfig_getLpIndex_outline);
+
+HvLpIndex HvLpConfig_getLpIndex(void)
+{
+	return itLpNaca.xLpIndex;
+}
+EXPORT_SYMBOL(HvLpConfig_getLpIndex);
+
+HvLpIndex HvLpConfig_getPrimaryLpIndex(void)
+{
+	return itLpNaca.xPrimaryLpIndex;
+}
+EXPORT_SYMBOL_GPL(HvLpConfig_getPrimaryLpIndex);
diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index e3bd2015f2c..f4cbbcf8773 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -88,6 +88,23 @@ static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
 }
 
 /*
+ * Structure passed to HvCallXm_getTceTableParms
+ */
+struct iommu_table_cb {
+	unsigned long	itc_busno;	/* Bus number for this tce table */
+	unsigned long	itc_start;	/* Will be NULL for secondary */
+	unsigned long	itc_totalsize;	/* Size (in pages) of whole table */
+	unsigned long	itc_offset;	/* Index into real tce table of the
+					   start of our section */
+	unsigned long	itc_size;	/* Size (in pages) of our section */
+	unsigned long	itc_index;	/* Index of this tce table */
+	unsigned short	itc_maxtables;	/* Max num of tables for partition */
+	unsigned char	itc_virtbus;	/* Flag to indicate virtual bus */
+	unsigned char	itc_slotno;	/* IOA Tce Slot Index */
+	unsigned char	itc_rsvd[4];
+};
+
+/*
  * Call Hv with the architected data structure to get TCE table info.
  * info. Put the returned data into the Linux representation of the
  * TCE table data.
@@ -162,7 +179,7 @@ void iommu_devnode_init_iSeries(struct device_node *dn)
 {
 	struct iommu_table *tbl;
 	struct pci_dn *pdn = PCI_DN(dn);
-	u32 *lsn = (u32 *)get_property(dn, "linux,logical-slot-number", NULL);
+	const u32 *lsn = get_property(dn, "linux,logical-slot-number", NULL);
 
 	BUG_ON(lsn == NULL);
 
diff --git a/arch/powerpc/platforms/iseries/it_exp_vpd_panel.h b/arch/powerpc/platforms/iseries/it_exp_vpd_panel.h
new file mode 100644
index 00000000000..6de9097b7f5
--- /dev/null
+++ b/arch/powerpc/platforms/iseries/it_exp_vpd_panel.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2002  Dave Boutcher IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+#ifndef _PLATFORMS_ISERIES_IT_EXT_VPD_PANEL_H
+#define _PLATFORMS_ISERIES_IT_EXT_VPD_PANEL_H
+
+/*
+ *	This struct maps the panel information
+ *
+ * Warning:
+ *	This data must match the architecture for the panel information
+ */
+
+#include <asm/types.h>
+
+struct ItExtVpdPanel {
+	/* Definition of the Extended Vpd On Panel Data Area */
+	char	systemSerial[8];
+	char	mfgID[4];
+	char	reserved1[24];
+	char	machineType[4];
+	char	systemID[6];
+	char	somUniqueCnt[4];
+	char	serialNumberCount;
+	char	reserved2[7];
+	u16	bbu3;
+	u16	bbu2;
+	u16	bbu1;
+	char	xLocationLabel[8];
+	u8	xRsvd1[6];
+	u16	xFrameId;
+	u8	xRsvd2[48];
+};
+
+extern struct ItExtVpdPanel	xItExtVpdPanel;
+
+#endif /* _PLATFORMS_ISERIES_IT_EXT_VPD_PANEL_H */
diff --git a/arch/powerpc/platforms/iseries/it_lp_naca.h b/arch/powerpc/platforms/iseries/it_lp_naca.h
new file mode 100644
index 00000000000..9bbf5898681
--- /dev/null
+++ b/arch/powerpc/platforms/iseries/it_lp_naca.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2001  Mike Corrigan IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+#ifndef _PLATFORMS_ISERIES_IT_LP_NACA_H
+#define _PLATFORMS_ISERIES_IT_LP_NACA_H
+
+#include <linux/types.h>
+
+/*
+ *	This control block contains the data that is shared between the
+ *	hypervisor (PLIC) and the OS.
+ */
+
+struct ItLpNaca {
+// CACHE_LINE_1 0x0000 - 0x007F Contains read-only data
+	u32	xDesc;			// Eye catcher			x00-x03
+	u16	xSize;			// Size of this class		x04-x05
+	u16	xIntHdlrOffset;		// Offset to IntHdlr array	x06-x07
+	u8	xMaxIntHdlrEntries;	// Number of entries in array	x08-x08
+	u8	xPrimaryLpIndex;	// LP Index of Primary		x09-x09
+	u8	xServiceLpIndex;	// LP Ind of Service Focal Pointx0A-x0A
+	u8	xLpIndex;		// LP Index			x0B-x0B
+	u16	xMaxLpQueues;		// Number of allocated queues	x0C-x0D
+	u16	xLpQueueOffset;		// Offset to start of LP queues	x0E-x0F
+	u8	xPirEnvironMode;	// Piranha or hardware		x10-x10
+	u8	xPirConsoleMode;	// Piranha console indicator	x11-x11
+	u8	xPirDasdMode;		// Piranha dasd indicator	x12-x12
+	u8	xRsvd1_0[5];		// Reserved for Piranha related	x13-x17
+	u8	flags;			// flags, see below		x18-x1F
+	u8	xSpVpdFormat;		// VPD areas are in CSP format	...
+	u8	xIntProcRatio;		// Ratio of int procs to procs	...
+	u8	xRsvd1_2[5];		// Reserved			...
+	u16	xRsvd1_3;		// Reserved			x20-x21
+	u16	xPlicVrmIndex;		// VRM index of PLIC		x22-x23
+	u16	xMinSupportedSlicVrmInd;// Min supported OS VRM index	x24-x25
+	u16	xMinCompatableSlicVrmInd;// Min compatible OS VRM index x26-x27
+	u64	xLoadAreaAddr;		// ER address of load area	x28-x2F
+	u32	xLoadAreaChunks;	// Chunks for the load area	x30-x33
+	u32	xPaseSysCallCRMask;	// Mask used to test CR before  x34-x37
+					// doing an ASR switch on PASE
+					// system call.
+	u64	xSlicSegmentTablePtr;	// Pointer to Slic seg table.   x38-x3f
+	u8	xRsvd1_4[64];		//				x40-x7F
+
+// CACHE_LINE_2 0x0080 - 0x00FF Contains local read-write data
+	u8	xRsvd2_0[128];		// Reserved			x00-x7F
+
+// CACHE_LINE_3-6 0x0100 - 0x02FF Contains LP Queue indicators
+// NB: Padding required to keep xInterrruptHdlr at x300 which is required
+// for v4r4 PLIC.
+	u8	xOldLpQueue[128];	// LP Queue needed for v4r4	100-17F
+	u8	xRsvd3_0[384];		// Reserved			180-2FF
+
+// CACHE_LINE_7-8 0x0300 - 0x03FF Contains the address of the OS interrupt
+//  handlers
+	u64	xInterruptHdlr[32];	// Interrupt handlers		300-x3FF
+};
+
+extern struct ItLpNaca		itLpNaca;
+
+#define ITLPNACA_LPAR		0x80	/* Is LPAR installed on the system */
+#define ITLPNACA_PARTITIONED	0x40	/* Is the system partitioned */
+#define ITLPNACA_HWSYNCEDTBS	0x20	/* Hardware synced TBs */
+#define ITLPNACA_HMTINT		0x10	/* Utilize MHT for interrupts */
+
+#endif /* _PLATFORMS_ISERIES_IT_LP_NACA_H */
diff --git a/arch/powerpc/platforms/iseries/lpardata.c b/arch/powerpc/platforms/iseries/lpardata.c
index a7769445d6c..8162049bb04 100644
--- a/arch/powerpc/platforms/iseries/lpardata.c
+++ b/arch/powerpc/platforms/iseries/lpardata.c
@@ -13,12 +13,10 @@
 #include <asm/processor.h>
 #include <asm/ptrace.h>
 #include <asm/abs_addr.h>
-#include <asm/iseries/it_lp_naca.h>
 #include <asm/lppaca.h>
 #include <asm/iseries/it_lp_reg_save.h>
 #include <asm/paca.h>
 #include <asm/iseries/lpar_map.h>
-#include <asm/iseries/it_exp_vpd_panel.h>
 #include <asm/iseries/it_lp_queue.h>
 
 #include "naca.h"
@@ -27,6 +25,8 @@
 #include "ipl_parms.h"
 #include "processor_vpd.h"
 #include "release_data.h"
+#include "it_exp_vpd_panel.h"
+#include "it_lp_naca.h"
 
 /* The HvReleaseData is the root of the information shared between
  * the hypervisor and Linux.
@@ -127,14 +127,12 @@ struct ItLpNaca itLpNaca = {
 		(u64)instruction_access_slb_iSeries /* 0x480 I-SLB */
 	}
 };
-EXPORT_SYMBOL(itLpNaca);
 
 /* May be filled in by the hypervisor so cannot end up in the BSS */
 struct ItIplParmsReal xItIplParmsReal __attribute__((__section__(".data")));
 
 /* May be filled in by the hypervisor so cannot end up in the BSS */
 struct ItExtVpdPanel xItExtVpdPanel __attribute__((__section__(".data")));
-EXPORT_SYMBOL(xItExtVpdPanel);
 
 #define maxPhysicalProcessors 32
 
diff --git a/arch/powerpc/platforms/iseries/lpevents.c b/arch/powerpc/platforms/iseries/lpevents.c
index 2a9f81ea27d..98c1c2440aa 100644
--- a/arch/powerpc/platforms/iseries/lpevents.c
+++ b/arch/powerpc/platforms/iseries/lpevents.c
@@ -20,7 +20,7 @@
 #include <asm/iseries/it_lp_queue.h>
 #include <asm/iseries/hv_lp_event.h>
 #include <asm/iseries/hv_call_event.h>
-#include <asm/iseries/it_lp_naca.h>
+#include "it_lp_naca.h"
 
 /*
  * The LpQueue is used to pass event data from the hypervisor to
diff --git a/arch/powerpc/platforms/iseries/main_store.h b/arch/powerpc/platforms/iseries/main_store.h
index 74f6889f834..1a7a3f50e40 100644
--- a/arch/powerpc/platforms/iseries/main_store.h
+++ b/arch/powerpc/platforms/iseries/main_store.h
@@ -61,9 +61,9 @@ struct IoHriMainStoreSegment4 {
 };
 
 /* Main Store VPD for Power4 */
-struct IoHriMainStoreChipInfo1 {
-	u32	chipMfgID	__attribute((packed));
-	char	chipECLevel[4]	__attribute((packed));
+struct __attribute((packed)) IoHriMainStoreChipInfo1 {
+	u32	chipMfgID;
+	char	chipECLevel[4];
 };
 
 struct IoHriMainStoreVpdIdData {
@@ -73,72 +73,72 @@ struct IoHriMainStoreVpdIdData {
 	char	serialNumber[12];
 };
 
-struct IoHriMainStoreVpdFruData {
-	char	fruLabel[8]	__attribute((packed));
-	u8	numberOfSlots	__attribute((packed));
-	u8	pluggingType	__attribute((packed));
-	u16	slotMapIndex	__attribute((packed));
+struct	__attribute((packed)) IoHriMainStoreVpdFruData {
+	char	fruLabel[8];
+	u8	numberOfSlots;
+	u8	pluggingType;
+	u16	slotMapIndex;
 };
 
-struct IoHriMainStoreAdrRangeBlock {
-	void	*blockStart      __attribute((packed));
-	void	*blockEnd        __attribute((packed));
-	u32	blockProcChipId __attribute((packed));
+struct  __attribute((packed)) IoHriMainStoreAdrRangeBlock {
+	void	*blockStart;
+	void	*blockEnd;
+	u32	blockProcChipId;
 };
 
 #define MaxAreaAdrRangeBlocks 4
 
-struct IoHriMainStoreArea4 {
-	u32	msVpdFormat			__attribute((packed));
-	u8	containedVpdType		__attribute((packed));
-	u8	reserved1			__attribute((packed));
-	u16	reserved2			__attribute((packed));
-
-	u64	msExists			__attribute((packed));
-	u64	msFunctional			__attribute((packed));
-
-	u32	memorySize			__attribute((packed));
-	u32	procNodeId			__attribute((packed));
-
-	u32	numAdrRangeBlocks		__attribute((packed));
-	struct IoHriMainStoreAdrRangeBlock xAdrRangeBlock[MaxAreaAdrRangeBlocks]	__attribute((packed));
-
-	struct IoHriMainStoreChipInfo1	chipInfo0	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo1	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo2	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo3	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo4	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo5	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo6	__attribute((packed));
-	struct IoHriMainStoreChipInfo1	chipInfo7	__attribute((packed));
-
-	void	*msRamAreaArray			__attribute((packed));
-	u32	msRamAreaArrayNumEntries	__attribute((packed));
-	u32	msRamAreaArrayEntrySize		__attribute((packed));
-
-	u32	numaDimmExists			__attribute((packed));
-	u32	numaDimmFunctional		__attribute((packed));
-	void	*numaDimmArray			__attribute((packed));
-	u32	numaDimmArrayNumEntries		__attribute((packed));
-	u32	numaDimmArrayEntrySize		__attribute((packed));
-
-	struct IoHriMainStoreVpdIdData idData	__attribute((packed));
-
-	u64	powerData			__attribute((packed));
-	u64	cardAssemblyPartNum		__attribute((packed));
-	u64	chipSerialNum			__attribute((packed));
-
-	u64	reserved3			__attribute((packed));
-	char	reserved4[16]			__attribute((packed));
-
-	struct IoHriMainStoreVpdFruData fruData	__attribute((packed));
-
-	u8	vpdPortNum			__attribute((packed));
-	u8	reserved5			__attribute((packed));
-	u8	frameId				__attribute((packed));
-	u8	rackUnit			__attribute((packed));
-	char	asciiKeywordVpd[256]		__attribute((packed));
-	u32	reserved6			__attribute((packed));
+struct __attribute((packed)) IoHriMainStoreArea4 {
+	u32	msVpdFormat;
+	u8	containedVpdType;
+	u8	reserved1;
+	u16	reserved2;
+
+	u64	msExists;
+	u64	msFunctional;
+
+	u32	memorySize;
+	u32	procNodeId;
+
+	u32	numAdrRangeBlocks;
+	struct IoHriMainStoreAdrRangeBlock xAdrRangeBlock[MaxAreaAdrRangeBlocks];
+
+	struct IoHriMainStoreChipInfo1	chipInfo0;
+	struct IoHriMainStoreChipInfo1	chipInfo1;
+	struct IoHriMainStoreChipInfo1	chipInfo2;
+	struct IoHriMainStoreChipInfo1	chipInfo3;
+	struct IoHriMainStoreChipInfo1	chipInfo4;
+	struct IoHriMainStoreChipInfo1	chipInfo5;
+	struct IoHriMainStoreChipInfo1	chipInfo6;
+	struct IoHriMainStoreChipInfo1	chipInfo7;
+
+	void	*msRamAreaArray;
+	u32	msRamAreaArrayNumEntries;
+	u32	msRamAreaArrayEntrySize;
+
+	u32	numaDimmExists;
+	u32	numaDimmFunctional;
+	void	*numaDimmArray;
+	u32	numaDimmArrayNumEntries;
+	u32	numaDimmArrayEntrySize;
+
+	struct IoHriMainStoreVpdIdData idData;
+
+	u64	powerData;
+	u64	cardAssemblyPartNum;
+	u64	chipSerialNum;
+
+	u64	reserved3;
+	char	reserved4[16];
+
+	struct IoHriMainStoreVpdFruData fruData;
+
+	u8	vpdPortNum;
+	u8	reserved5;
+	u8	frameId;
+	u8	rackUnit;
+	char	asciiKeywordVpd[256];
+	u32	reserved6;
 };
 
 
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index 35bcc98111f..3eb12065df2 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -34,6 +34,7 @@
 #include <asm/pci-bridge.h>
 #include <asm/iommu.h>
 #include <asm/abs_addr.h>
+#include <asm/firmware.h>
 
 #include <asm/iseries/hv_call_xm.h>
 #include <asm/iseries/mf.h>
@@ -176,12 +177,12 @@ void iSeries_pcibios_init(void)
 	}
 	while ((node = of_get_next_child(root, node)) != NULL) {
 		HvBusNumber bus;
-		u32 *busp;
+		const u32 *busp;
 
 		if ((node->type == NULL) || (strcmp(node->type, "pci") != 0))
 			continue;
 
-		busp = (u32 *)get_property(node, "bus-range", NULL);
+		busp = get_property(node, "bus-range", NULL);
 		if (busp == NULL)
 			continue;
 		bus = *busp;
@@ -221,10 +222,9 @@ void __init iSeries_pci_final_fixup(void)
 
 		if (node != NULL) {
 			struct pci_dn *pdn = PCI_DN(node);
-			u32 *agent;
+			const u32 *agent;
 
-			agent = (u32 *)get_property(node, "linux,agent-id",
-					NULL);
+			agent = get_property(node, "linux,agent-id", NULL);
 			if ((pdn != NULL) && (agent != NULL)) {
 				u8 irq = iSeries_allocate_IRQ(pdn->busno, 0,
 						pdn->bussubno);
@@ -271,46 +271,6 @@ void pcibios_fixup_resources(struct pci_dev *pdev)
 }
 
 /*
- * I/0 Memory copy MUST use mmio commands on iSeries
- * To do; For performance, include the hv call directly
- */
-void iSeries_memset_io(volatile void __iomem *dest, char c, size_t Count)
-{
-	u8 ByteValue = c;
-	long NumberOfBytes = Count;
-
-	while (NumberOfBytes > 0) {
-		iSeries_Write_Byte(ByteValue, dest++);
-		-- NumberOfBytes;
-	}
-}
-EXPORT_SYMBOL(iSeries_memset_io);
-
-void iSeries_memcpy_toio(volatile void __iomem *dest, void *source, size_t count)
-{
-	char *src = source;
-	long NumberOfBytes = count;
-
-	while (NumberOfBytes > 0) {
-		iSeries_Write_Byte(*src++, dest++);
-		-- NumberOfBytes;
-	}
-}
-EXPORT_SYMBOL(iSeries_memcpy_toio);
-
-void iSeries_memcpy_fromio(void *dest, const volatile void __iomem *src, size_t count)
-{
-	char *dst = dest;
-	long NumberOfBytes = count;
-
-	while (NumberOfBytes > 0) {
-		*dst++ = iSeries_Read_Byte(src++);
-		-- NumberOfBytes;
-	}
-}
-EXPORT_SYMBOL(iSeries_memcpy_fromio);
-
-/*
  * Look down the chain to find the matching Device Device
  */
 static struct device_node *find_Device_Node(int bus, int devfn)
@@ -492,7 +452,7 @@ static inline struct device_node *xlate_iomm_address(
  * iSeries_Read_Word = Read Word  (16 bit)
  * iSeries_Read_Long = Read Long  (32 bit)
  */
-u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
+static u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
 {
 	u64 BarOffset;
 	u64 dsa;
@@ -519,9 +479,8 @@ u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
 
 	return (u8)ret.value;
 }
-EXPORT_SYMBOL(iSeries_Read_Byte);
 
-u16 iSeries_Read_Word(const volatile void __iomem *IoAddress)
+static u16 iSeries_Read_Word(const volatile void __iomem *IoAddress)
 {
 	u64 BarOffset;
 	u64 dsa;
@@ -549,9 +508,8 @@ u16 iSeries_Read_Word(const volatile void __iomem *IoAddress)
 
 	return swab16((u16)ret.value);
 }
-EXPORT_SYMBOL(iSeries_Read_Word);
 
-u32 iSeries_Read_Long(const volatile void __iomem *IoAddress)
+static u32 iSeries_Read_Long(const volatile void __iomem *IoAddress)
 {
 	u64 BarOffset;
 	u64 dsa;
@@ -579,7 +537,6 @@ u32 iSeries_Read_Long(const volatile void __iomem *IoAddress)
 
 	return swab32((u32)ret.value);
 }
-EXPORT_SYMBOL(iSeries_Read_Long);
 
 /*
  * Write MM I/O Instructions for the iSeries
@@ -588,7 +545,7 @@ EXPORT_SYMBOL(iSeries_Read_Long);
  * iSeries_Write_Word = Write Word(16 bit)
  * iSeries_Write_Long = Write Long(32 bit)
  */
-void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress)
+static void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress)
 {
 	u64 BarOffset;
 	u64 dsa;
@@ -613,9 +570,8 @@ void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress)
 		rc = HvCall4(HvCallPciBarStore8, dsa, BarOffset, data, 0);
 	} while (CheckReturnCode("WWB", DevNode, &retry, rc) != 0);
 }
-EXPORT_SYMBOL(iSeries_Write_Byte);
 
-void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress)
+static void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress)
 {
 	u64 BarOffset;
 	u64 dsa;
@@ -640,9 +596,8 @@ void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress)
 		rc = HvCall4(HvCallPciBarStore16, dsa, BarOffset, swab16(data), 0);
 	} while (CheckReturnCode("WWW", DevNode, &retry, rc) != 0);
 }
-EXPORT_SYMBOL(iSeries_Write_Word);
 
-void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress)
+static void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress)
 {
 	u64 BarOffset;
 	u64 dsa;
@@ -667,4 +622,224 @@ void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress)
 		rc = HvCall4(HvCallPciBarStore32, dsa, BarOffset, swab32(data), 0);
 	} while (CheckReturnCode("WWL", DevNode, &retry, rc) != 0);
 }
-EXPORT_SYMBOL(iSeries_Write_Long);
+
+extern unsigned char __raw_readb(const volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return *(volatile unsigned char __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readb);
+
+extern unsigned short __raw_readw(const volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return *(volatile unsigned short __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readw);
+
+extern unsigned int __raw_readl(const volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return *(volatile unsigned int __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readl);
+
+extern unsigned long __raw_readq(const volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return *(volatile unsigned long __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readq);
+
+extern void __raw_writeb(unsigned char v, volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	*(volatile unsigned char __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writeb);
+
+extern void __raw_writew(unsigned short v, volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	*(volatile unsigned short __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writew);
+
+extern void __raw_writel(unsigned int v, volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	*(volatile unsigned int __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writel);
+
+extern void __raw_writeq(unsigned long v, volatile void __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	*(volatile unsigned long __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writeq);
+
+int in_8(const volatile unsigned char __iomem *addr)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		return iSeries_Read_Byte(addr);
+	return __in_8(addr);
+}
+EXPORT_SYMBOL(in_8);
+
+void out_8(volatile unsigned char __iomem *addr, int val)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		iSeries_Write_Byte(val, addr);
+	else
+		__out_8(addr, val);
+}
+EXPORT_SYMBOL(out_8);
+
+int in_le16(const volatile unsigned short __iomem *addr)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		return iSeries_Read_Word(addr);
+	return __in_le16(addr);
+}
+EXPORT_SYMBOL(in_le16);
+
+int in_be16(const volatile unsigned short __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return __in_be16(addr);
+}
+EXPORT_SYMBOL(in_be16);
+
+void out_le16(volatile unsigned short __iomem *addr, int val)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		iSeries_Write_Word(val, addr);
+	else
+		__out_le16(addr, val);
+}
+EXPORT_SYMBOL(out_le16);
+
+void out_be16(volatile unsigned short __iomem *addr, int val)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	__out_be16(addr, val);
+}
+EXPORT_SYMBOL(out_be16);
+
+unsigned in_le32(const volatile unsigned __iomem *addr)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		return iSeries_Read_Long(addr);
+	return __in_le32(addr);
+}
+EXPORT_SYMBOL(in_le32);
+
+unsigned in_be32(const volatile unsigned __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return __in_be32(addr);
+}
+EXPORT_SYMBOL(in_be32);
+
+void out_le32(volatile unsigned __iomem *addr, int val)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES))
+		iSeries_Write_Long(val, addr);
+	else
+		__out_le32(addr, val);
+}
+EXPORT_SYMBOL(out_le32);
+
+void out_be32(volatile unsigned __iomem *addr, int val)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	__out_be32(addr, val);
+}
+EXPORT_SYMBOL(out_be32);
+
+unsigned long in_le64(const volatile unsigned long __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return __in_le64(addr);
+}
+EXPORT_SYMBOL(in_le64);
+
+unsigned long in_be64(const volatile unsigned long __iomem *addr)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	return __in_be64(addr);
+}
+EXPORT_SYMBOL(in_be64);
+
+void out_le64(volatile unsigned long __iomem *addr, unsigned long val)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	__out_le64(addr, val);
+}
+EXPORT_SYMBOL(out_le64);
+
+void out_be64(volatile unsigned long __iomem *addr, unsigned long val)
+{
+	BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+	__out_be64(addr, val);
+}
+EXPORT_SYMBOL(out_be64);
+
+void memset_io(volatile void __iomem *addr, int c, unsigned long n)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+		volatile char __iomem *d = addr;
+
+		while (n-- > 0) {
+			iSeries_Write_Byte(c, d++);
+		}
+	} else
+		eeh_memset_io(addr, c, n);
+}
+EXPORT_SYMBOL(memset_io);
+
+void memcpy_fromio(void *dest, const volatile void __iomem *src,
+                                 unsigned long n)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+		char *d = dest;
+		const volatile char __iomem *s = src;
+
+		while (n-- > 0) {
+			*d++ = iSeries_Read_Byte(s++);
+		}
+	} else
+		eeh_memcpy_fromio(dest, src, n);
+}
+EXPORT_SYMBOL(memcpy_fromio);
+
+void memcpy_toio(volatile void __iomem *dest, const void *src, unsigned long n)
+{
+	if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+		const char *s = src;
+		volatile char __iomem *d = dest;
+
+		while (n-- > 0) {
+			iSeries_Write_Byte(*s++, d++);
+		}
+	} else
+		eeh_memcpy_toio(dest, src, n);
+}
+EXPORT_SYMBOL(memcpy_toio);
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index c9605d773a7..7f1953066ff 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -59,6 +59,7 @@
 #include "irq.h"
 #include "vpd_areas.h"
 #include "processor_vpd.h"
+#include "it_lp_naca.h"
 #include "main_store.h"
 #include "call_sm.h"
 #include "call_hpt.h"
diff --git a/arch/powerpc/platforms/iseries/viopath.c b/arch/powerpc/platforms/iseries/viopath.c
index 622a30149b4..9baa4ee8259 100644
--- a/arch/powerpc/platforms/iseries/viopath.c
+++ b/arch/powerpc/platforms/iseries/viopath.c
@@ -41,8 +41,8 @@
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
+#include <asm/prom.h>
 #include <asm/iseries/hv_types.h>
-#include <asm/iseries/it_exp_vpd_panel.h>
 #include <asm/iseries/hv_lp_event.h>
 #include <asm/iseries/hv_lp_config.h>
 #include <asm/iseries/mf.h>
@@ -116,6 +116,8 @@ static int proc_viopath_show(struct seq_file *m, void *v)
 	dma_addr_t handle;
 	HvLpEvent_Rc hvrc;
 	DECLARE_MUTEX_LOCKED(Semaphore);
+	struct device_node *node;
+	const char *sysid;
 
 	buf = kmalloc(HW_PAGE_SIZE, GFP_KERNEL);
 	if (!buf)
@@ -143,20 +145,26 @@ static int proc_viopath_show(struct seq_file *m, void *v)
 
 	buf[HW_PAGE_SIZE-1] = '\0';
 	seq_printf(m, "%s", buf);
-	seq_printf(m, "AVAILABLE_VETH=%x\n", vlanMap);
-	seq_printf(m, "SRLNBR=%c%c%c%c%c%c%c\n",
-		   e2a(xItExtVpdPanel.mfgID[2]),
-		   e2a(xItExtVpdPanel.mfgID[3]),
-		   e2a(xItExtVpdPanel.systemSerial[1]),
-		   e2a(xItExtVpdPanel.systemSerial[2]),
-		   e2a(xItExtVpdPanel.systemSerial[3]),
-		   e2a(xItExtVpdPanel.systemSerial[4]),
-		   e2a(xItExtVpdPanel.systemSerial[5]));
 
 	dma_unmap_single(iSeries_vio_dev, handle, HW_PAGE_SIZE,
 			 DMA_FROM_DEVICE);
 	kfree(buf);
 
+	seq_printf(m, "AVAILABLE_VETH=%x\n", vlanMap);
+
+	node = of_find_node_by_path("/");
+	sysid = NULL;
+	if (node != NULL)
+		sysid = get_property(node, "system-id", NULL);
+
+	if (sysid == NULL)
+		seq_printf(m, "SRLNBR=<UNKNOWN>\n");
+	else
+		/* Skip "IBM," on front of serial number, see dt.c */
+		seq_printf(m, "SRLNBR=%s\n", sysid + 4);
+
+	of_node_put(node);
+
 	return 0;
 }
 
diff --git a/arch/powerpc/platforms/iseries/vpdinfo.c b/arch/powerpc/platforms/iseries/vpdinfo.c
index 23a6d1e5b42..9f83878a0c2 100644
--- a/arch/powerpc/platforms/iseries/vpdinfo.c
+++ b/arch/powerpc/platforms/iseries/vpdinfo.c
@@ -188,7 +188,7 @@ static void __init iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
 {
 	u8 *TagPtr = VpdData;
 	int DataLen = VpdDataLen - 3;
-	u8 PhbId;
+	u8 PhbId = 0xff;
 
 	while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
 		int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
@@ -205,15 +205,16 @@ static void __init iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
 	}
 }
 
-static void __init iSeries_Get_Location_Code(u16 bus, HvAgentId agent,
+static int __init iSeries_Get_Location_Code(u16 bus, HvAgentId agent,
 		u8 *frame, char card[4])
 {
+	int status = 0;
 	int BusVpdLen = 0;
 	u8 *BusVpdPtr = kmalloc(BUS_VPDSIZE, GFP_KERNEL);
 
 	if (BusVpdPtr == NULL) {
 		printk("PCI: Bus VPD Buffer allocation failure.\n");
-		return;
+		return 0;
 	}
 	BusVpdLen = HvCallPci_getBusVpd(bus, iseries_hv_addr(BusVpdPtr),
 					BUS_VPDSIZE);
@@ -228,8 +229,10 @@ static void __init iSeries_Get_Location_Code(u16 bus, HvAgentId agent,
 		goto out_free;
 	}
 	iSeries_Parse_Vpd(BusVpdPtr, BusVpdLen, agent, frame, card);
+	status = 1;
 out_free:
 	kfree(BusVpdPtr);
+	return status;
 }
 
 /*
@@ -246,7 +249,7 @@ void __init iSeries_Device_Information(struct pci_dev *PciDev, int count)
 	struct device_node *DevNode = PciDev->sysdata;
 	struct pci_dn *pdn;
 	u16 bus;
-	u8 frame;
+	u8 frame = 0;
 	char card[4];
 	HvSubBusNumber subbus;
 	HvAgentId agent;
@@ -262,10 +265,11 @@ void __init iSeries_Device_Information(struct pci_dev *PciDev, int count)
 	subbus = pdn->bussubno;
 	agent = ISERIES_PCI_AGENTID(ISERIES_GET_DEVICE_FROM_SUBBUS(subbus),
 			ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus));
-	iSeries_Get_Location_Code(bus, agent, &frame, card);
 
-	printk("%d. PCI: Bus%3d, Device%3d, Vendor %04X Frame%3d, Card %4s  ",
-			count, bus, PCI_SLOT(PciDev->devfn), PciDev->vendor,
-			frame, card);
-	printk("0x%04X\n", (int)(PciDev->class >> 8));
+	if (iSeries_Get_Location_Code(bus, agent, &frame, card)) {
+		printk("%d. PCI: Bus%3d, Device%3d, Vendor %04X Frame%3d, "
+			"Card %4s  0x%04X\n", count, bus,
+			PCI_SLOT(PciDev->devfn), PciDev->vendor, frame,
+			card, (int)(PciDev->class >> 8));
+	}
 }
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index 63a1670d3bf..c3aa46b8e2b 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -38,16 +38,16 @@ static struct pci_controller *u3_agp, *u3_ht;
 static int __init fixup_one_level_bus_range(struct device_node *node, int higher)
 {
 	for (; node != 0;node = node->sibling) {
-		int * bus_range;
-		unsigned int *class_code;
+		const int *bus_range;
+		const unsigned int *class_code;
 		int len;
 
 		/* For PCI<->PCI bridges or CardBus bridges, we go down */
-		class_code = (unsigned int *) get_property(node, "class-code", NULL);
+		class_code = get_property(node, "class-code", NULL);
 		if (!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
 			(*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
 			continue;
-		bus_range = (int *) get_property(node, "bus-range", &len);
+		bus_range = get_property(node, "bus-range", &len);
 		if (bus_range != NULL && len > 2 * sizeof(int)) {
 			if (bus_range[1] > higher)
 				higher = bus_range[1];
@@ -65,30 +65,36 @@ static int __init fixup_one_level_bus_range(struct device_node *node, int higher
  */
 static void __init fixup_bus_range(struct device_node *bridge)
 {
-	int * bus_range;
+	int *bus_range;
+	struct property *prop;
 	int len;
 
 	/* Lookup the "bus-range" property for the hose */
-	bus_range = (int *) get_property(bridge, "bus-range", &len);
-	if (bus_range == NULL || len < 2 * sizeof(int)) {
+	prop = of_find_property(bridge, "bus-range", &len);
+	if (prop == NULL  || prop->value == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s\n",
 			       bridge->full_name);
 		return;
 	}
+	bus_range = (int *)prop->value;
 	bus_range[1] = fixup_one_level_bus_range(bridge->child, bus_range[1]);
 }
 
 
-#define U3_AGP_CFA0(devfn, off)	\
-	((1 << (unsigned long)PCI_SLOT(dev_fn)) \
-	| (((unsigned long)PCI_FUNC(dev_fn)) << 8) \
-	| (((unsigned long)(off)) & 0xFCUL))
+static unsigned long u3_agp_cfa0(u8 devfn, u8 off)
+{
+	return (1 << (unsigned long)PCI_SLOT(devfn)) |
+		((unsigned long)PCI_FUNC(devfn) << 8) |
+		((unsigned long)off & 0xFCUL);
+}
 
-#define U3_AGP_CFA1(bus, devfn, off)	\
-	((((unsigned long)(bus)) << 16) \
-	|(((unsigned long)(devfn)) << 8) \
-	|(((unsigned long)(off)) & 0xFCUL) \
-	|1UL)
+static unsigned long u3_agp_cfa1(u8 bus, u8 devfn, u8 off)
+{
+	return ((unsigned long)bus << 16) |
+		((unsigned long)devfn << 8) |
+		((unsigned long)off & 0xFCUL) |
+		1UL;
+}
 
 static unsigned long u3_agp_cfg_access(struct pci_controller* hose,
 				       u8 bus, u8 dev_fn, u8 offset)
@@ -98,9 +104,9 @@ static unsigned long u3_agp_cfg_access(struct pci_controller* hose,
 	if (bus == hose->first_busno) {
 		if (dev_fn < (11 << 3))
 			return 0;
-		caddr = U3_AGP_CFA0(dev_fn, offset);
+		caddr = u3_agp_cfa0(dev_fn, offset);
 	} else
-		caddr = U3_AGP_CFA1(bus, dev_fn, offset);
+		caddr = u3_agp_cfa1(bus, dev_fn, offset);
 
 	/* Uninorth will return garbage if we don't read back the value ! */
 	do {
@@ -182,13 +188,15 @@ static struct pci_ops u3_agp_pci_ops =
 	u3_agp_write_config
 };
 
+static unsigned long u3_ht_cfa0(u8 devfn, u8 off)
+{
+	return (devfn << 8) | off;
+}
 
-#define U3_HT_CFA0(devfn, off)		\
-		((((unsigned long)devfn) << 8) | offset)
-#define U3_HT_CFA1(bus, devfn, off)	\
-		(U3_HT_CFA0(devfn, off) \
-		+ (((unsigned long)bus) << 16) \
-		+ 0x01000000UL)
+static unsigned long u3_ht_cfa1(u8 bus, u8 devfn, u8 off)
+{
+	return u3_ht_cfa0(devfn, off) + (bus << 16) + 0x01000000UL;
+}
 
 static unsigned long u3_ht_cfg_access(struct pci_controller* hose,
 				      u8 bus, u8 devfn, u8 offset)
@@ -196,9 +204,9 @@ static unsigned long u3_ht_cfg_access(struct pci_controller* hose,
 	if (bus == hose->first_busno) {
 		if (PCI_SLOT(devfn) == 0)
 			return 0;
-		return ((unsigned long)hose->cfg_data) + U3_HT_CFA0(devfn, offset);
+		return ((unsigned long)hose->cfg_data) + u3_ht_cfa0(devfn, offset);
 	} else
-		return ((unsigned long)hose->cfg_data) + U3_HT_CFA1(bus, devfn, offset);
+		return ((unsigned long)hose->cfg_data) + u3_ht_cfa1(bus, devfn, offset);
 }
 
 static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
@@ -211,6 +219,9 @@ static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
 	if (hose == NULL)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
+	if (offset > 0xff)
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+
 	addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
 	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
@@ -243,6 +254,9 @@ static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn,
 	if (hose == NULL)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
+	if (offset > 0xff)
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+
 	addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
 	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
@@ -314,12 +328,12 @@ static int __init add_bridge(struct device_node *dev)
 	int len;
 	struct pci_controller *hose;
 	char* disp_name;
-	int *bus_range;
+	const int *bus_range;
 	int primary = 1;
 
 	DBG("Adding PCI host bridge %s\n", dev->full_name);
 
-	bus_range = (int *) get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, assume bus 0\n",
 		dev->full_name);
diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c
index 57567dfb981..fe6b9bff61b 100644
--- a/arch/powerpc/platforms/maple/setup.c
+++ b/arch/powerpc/platforms/maple/setup.c
@@ -99,8 +99,7 @@ static unsigned long maple_find_nvram_base(void)
 static void maple_restart(char *cmd)
 {
 	unsigned int maple_nvram_base;
-	unsigned int maple_nvram_offset;
-	unsigned int maple_nvram_command;
+	const unsigned int *maple_nvram_offset, *maple_nvram_command;
 	struct device_node *sp;
 
 	maple_nvram_base = maple_find_nvram_base();
@@ -113,14 +112,12 @@ static void maple_restart(char *cmd)
 		printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
 		goto fail;
 	}
-	maple_nvram_offset = *(unsigned int*) get_property(sp,
-			"restart-addr", NULL);
-	maple_nvram_command = *(unsigned int*) get_property(sp,
-			"restart-value", NULL);
+	maple_nvram_offset = get_property(sp, "restart-addr", NULL);
+	maple_nvram_command = get_property(sp, "restart-value", NULL);
 	of_node_put(sp);
 
 	/* send command */
-	outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
+	outb_p(*maple_nvram_command, maple_nvram_base + *maple_nvram_offset);
 	for (;;) ;
  fail:
 	printk(KERN_EMERG "Maple: Manual Restart Required\n");
@@ -129,8 +126,7 @@ static void maple_restart(char *cmd)
 static void maple_power_off(void)
 {
 	unsigned int maple_nvram_base;
-	unsigned int maple_nvram_offset;
-	unsigned int maple_nvram_command;
+	const unsigned int *maple_nvram_offset, *maple_nvram_command;
 	struct device_node *sp;
 
 	maple_nvram_base = maple_find_nvram_base();
@@ -143,14 +139,12 @@ static void maple_power_off(void)
 		printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
 		goto fail;
 	}
-	maple_nvram_offset = *(unsigned int*) get_property(sp,
-			"power-off-addr", NULL);
-	maple_nvram_command = *(unsigned int*) get_property(sp,
-			"power-off-value", NULL);
+	maple_nvram_offset = get_property(sp, "power-off-addr", NULL);
+	maple_nvram_command = get_property(sp, "power-off-value", NULL);
 	of_node_put(sp);
 
 	/* send command */
-	outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
+	outb_p(*maple_nvram_command, maple_nvram_base + *maple_nvram_offset);
 	for (;;) ;
  fail:
 	printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
@@ -211,7 +205,7 @@ static void __init maple_init_early(void)
 static void __init maple_init_IRQ(void)
 {
 	struct device_node *root, *np, *mpic_node = NULL;
-	unsigned int *opprop;
+	const unsigned int *opprop;
 	unsigned long openpic_addr = 0;
 	int naddr, n, i, opplen, has_isus = 0;
 	struct mpic *mpic;
@@ -241,8 +235,7 @@ static void __init maple_init_IRQ(void)
 	/* Find address list in /platform-open-pic */
 	root = of_find_node_by_path("/");
 	naddr = prom_n_addr_cells(root);
-	opprop = (unsigned int *) get_property(root, "platform-open-pic",
-					       &opplen);
+	opprop = get_property(root, "platform-open-pic", &opplen);
 	if (opprop != 0) {
 		openpic_addr = of_read_number(opprop, naddr);
 		has_isus = (opplen > naddr);
diff --git a/arch/powerpc/platforms/pasemi/Makefile b/arch/powerpc/platforms/pasemi/Makefile
new file mode 100644
index 00000000000..1be1a993c5f
--- /dev/null
+++ b/arch/powerpc/platforms/pasemi/Makefile
@@ -0,0 +1 @@
+obj-y	+= setup.o pci.o time.o
diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
new file mode 100644
index 00000000000..fd71d72736b
--- /dev/null
+++ b/arch/powerpc/platforms/pasemi/pasemi.h
@@ -0,0 +1,8 @@
+#ifndef _PASEMI_PASEMI_H
+#define _PASEMI_PASEMI_H
+
+extern unsigned long pas_get_boot_time(void);
+extern void pas_pci_init(void);
+extern void pas_pcibios_fixup(void);
+
+#endif /* _PASEMI_PASEMI_H */
diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c
new file mode 100644
index 00000000000..4679c523041
--- /dev/null
+++ b/arch/powerpc/platforms/pasemi/pci.c
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2006 PA Semi, Inc
+ *
+ * Authors: Kip Walker, PA Semi
+ *	    Olof Johansson, PA Semi
+ *
+ * Maintained by: Olof Johansson <olof@lixom.net>
+ *
+ * Based on arch/powerpc/platforms/maple/pci.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+
+#include <asm/pci-bridge.h>
+#include <asm/machdep.h>
+
+#include <asm/ppc-pci.h>
+
+#define PA_PXP_CFA(bus, devfn, off) (((bus) << 20) | ((devfn) << 12) | (off))
+
+#define CONFIG_OFFSET_VALID(off) ((off) < 4096)
+
+static unsigned long pa_pxp_cfg_addr(struct pci_controller *hose,
+				       u8 bus, u8 devfn, int offset)
+{
+	return ((unsigned long)hose->cfg_data) + PA_PXP_CFA(bus, devfn, offset);
+}
+
+static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
+			      int offset, int len, u32 *val)
+{
+	struct pci_controller *hose;
+	unsigned long addr;
+
+	hose = pci_bus_to_host(bus);
+	if (!hose)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	if (!CONFIG_OFFSET_VALID(offset))
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+
+	addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
+
+	/*
+	 * Note: the caller has already checked that offset is
+	 * suitably aligned and that len is 1, 2 or 4.
+	 */
+	switch (len) {
+	case 1:
+		*val = in_8((u8 *)addr);
+		break;
+	case 2:
+		*val = in_le16((u16 *)addr);
+		break;
+	default:
+		*val = in_le32((u32 *)addr);
+		break;
+	}
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int pa_pxp_write_config(struct pci_bus *bus, unsigned int devfn,
+			       int offset, int len, u32 val)
+{
+	struct pci_controller *hose;
+	unsigned long addr;
+
+	hose = pci_bus_to_host(bus);
+	if (!hose)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	if (!CONFIG_OFFSET_VALID(offset))
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+
+	addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
+
+	/*
+	 * Note: the caller has already checked that offset is
+	 * suitably aligned and that len is 1, 2 or 4.
+	 */
+	switch (len) {
+	case 1:
+		out_8((u8 *)addr, val);
+		(void) in_8((u8 *)addr);
+		break;
+	case 2:
+		out_le16((u16 *)addr, val);
+		(void) in_le16((u16 *)addr);
+		break;
+	default:
+		out_le32((u32 *)addr, val);
+		(void) in_le32((u32 *)addr);
+		break;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops pa_pxp_ops = {
+	pa_pxp_read_config,
+	pa_pxp_write_config,
+};
+
+static void __init setup_pa_pxp(struct pci_controller *hose)
+{
+	hose->ops = &pa_pxp_ops;
+	hose->cfg_data = ioremap(0xe0000000, 0x10000000);
+}
+
+static int __init add_bridge(struct device_node *dev)
+{
+	struct pci_controller *hose;
+
+	pr_debug("Adding PCI host bridge %s\n", dev->full_name);
+
+	hose = pcibios_alloc_controller(dev);
+	if (!hose)
+		return -ENOMEM;
+
+	hose->first_busno = 0;
+	hose->last_busno = 0xff;
+
+	setup_pa_pxp(hose);
+
+	printk(KERN_INFO "Found PA-PXP PCI host bridge.\n");
+
+	/* Interpret the "ranges" property */
+	/* This also maps the I/O region and sets isa_io/mem_base */
+	pci_process_bridge_OF_ranges(hose, dev, 1);
+	pci_setup_phb_io(hose, 1);
+
+	return 0;
+}
+
+
+void __init pas_pcibios_fixup(void)
+{
+	struct pci_dev *dev = NULL;
+
+	for_each_pci_dev(dev)
+		pci_read_irq_line(dev);
+}
+
+static void __init pas_fixup_phb_resources(void)
+{
+	struct pci_controller *hose, *tmp;
+
+	list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+		unsigned long offset = (unsigned long)hose->io_base_virt - pci_io_base;
+		hose->io_resource.start += offset;
+		hose->io_resource.end += offset;
+		printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
+		       hose->global_number,
+		       hose->io_resource.start, hose->io_resource.end);
+	}
+}
+
+
+void __init pas_pci_init(void)
+{
+	struct device_node *np, *root;
+
+	root = of_find_node_by_path("/");
+	if (!root) {
+		printk(KERN_CRIT "pas_pci_init: can't find root "
+			"of device tree\n");
+		return;
+	}
+
+	for (np = NULL; (np = of_get_next_child(root, np)) != NULL;)
+		if (np->name && !strcmp(np->name, "pxp") && !add_bridge(np))
+			of_node_get(np);
+
+	of_node_put(root);
+
+	pas_fixup_phb_resources();
+
+	/* Setup the linkage between OF nodes and PHBs */
+	pci_devs_phb_init();
+
+	/* Use the common resource allocation mechanism */
+	pci_probe_only = 1;
+}
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
new file mode 100644
index 00000000000..628482671c1
--- /dev/null
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2006 PA Semi, Inc
+ *
+ * Authors: Kip Walker, PA Semi
+ *	    Olof Johansson, PA Semi
+ *
+ * Maintained by: Olof Johansson <olof@lixom.net>
+ *
+ * Based on arch/powerpc/platforms/maple/setup.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/console.h>
+
+#include <asm/prom.h>
+#include <asm/system.h>
+#include <asm/iommu.h>
+#include <asm/machdep.h>
+#include <asm/mpic.h>
+#include <asm/smp.h>
+#include <asm/time.h>
+
+#include "pasemi.h"
+
+static void pas_restart(char *cmd)
+{
+	printk("restart unimplemented, looping...\n");
+	for (;;) ;
+}
+
+static void pas_power_off(void)
+{
+	printk("power off unimplemented, looping...\n");
+	for (;;) ;
+}
+
+static void pas_halt(void)
+{
+	pas_power_off();
+}
+
+#ifdef CONFIG_SMP
+struct smp_ops_t pas_smp_ops = {
+	.probe		= smp_mpic_probe,
+	.message_pass	= smp_mpic_message_pass,
+	.kick_cpu	= smp_generic_kick_cpu,
+	.setup_cpu	= smp_mpic_setup_cpu,
+	.give_timebase	= smp_generic_give_timebase,
+	.take_timebase	= smp_generic_take_timebase,
+};
+#endif /* CONFIG_SMP */
+
+void __init pas_setup_arch(void)
+{
+#ifdef CONFIG_SMP
+	/* Setup SMP callback */
+	smp_ops = &pas_smp_ops;
+#endif
+	/* Lookup PCI hosts */
+	pas_pci_init();
+
+#ifdef CONFIG_DUMMY_CONSOLE
+	conswitchp = &dummy_con;
+#endif
+
+	printk(KERN_DEBUG "Using default idle loop\n");
+}
+
+static void iommu_dev_setup_null(struct pci_dev *dev) { }
+static void iommu_bus_setup_null(struct pci_bus *bus) { }
+
+static void __init pas_init_early(void)
+{
+	/* No iommu code yet */
+	ppc_md.iommu_dev_setup = iommu_dev_setup_null;
+	ppc_md.iommu_bus_setup = iommu_bus_setup_null;
+	pci_direct_iommu_init();
+}
+
+/* No legacy IO on our parts */
+static int pas_check_legacy_ioport(unsigned int baseport)
+{
+	return -ENODEV;
+}
+
+static __init void pas_init_IRQ(void)
+{
+	struct device_node *np;
+	struct device_node *root, *mpic_node;
+	unsigned long openpic_addr;
+	const unsigned int *opprop;
+	int naddr, opplen;
+	struct mpic *mpic;
+
+	mpic_node = NULL;
+
+	for_each_node_by_type(np, "interrupt-controller")
+		if (device_is_compatible(np, "open-pic")) {
+			mpic_node = np;
+			break;
+		}
+	if (!mpic_node)
+		for_each_node_by_type(np, "open-pic") {
+			mpic_node = np;
+			break;
+		}
+	if (!mpic_node) {
+		printk(KERN_ERR
+			"Failed to locate the MPIC interrupt controller\n");
+		return;
+	}
+
+	/* Find address list in /platform-open-pic */
+	root = of_find_node_by_path("/");
+	naddr = prom_n_addr_cells(root);
+	opprop = get_property(root, "platform-open-pic", &opplen);
+	if (!opprop) {
+		printk(KERN_ERR "No platform-open-pic property.\n");
+		of_node_put(root);
+		return;
+	}
+	openpic_addr = of_read_number(opprop, naddr);
+	printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
+	of_node_put(root);
+
+	mpic = mpic_alloc(mpic_node, openpic_addr, MPIC_PRIMARY, 0, 0,
+			  " PAS-OPIC  ");
+	BUG_ON(!mpic);
+
+	mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
+	mpic_init(mpic);
+	of_node_put(mpic_node);
+	of_node_put(root);
+}
+
+static void __init pas_progress(char *s, unsigned short hex)
+{
+	printk("[%04x] : %s\n", hex, s ? s : "");
+}
+
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init pas_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "PA6T-1682M"))
+		return 0;
+
+	hpte_init_native();
+
+	return 1;
+}
+
+define_machine(pas) {
+	.name			= "PA Semi PA6T-1682M",
+	.probe			= pas_probe,
+	.setup_arch		= pas_setup_arch,
+	.init_early		= pas_init_early,
+	.init_IRQ		= pas_init_IRQ,
+	.get_irq		= mpic_get_irq,
+	.pcibios_fixup		= pas_pcibios_fixup,
+	.restart		= pas_restart,
+	.power_off		= pas_power_off,
+	.halt			= pas_halt,
+	.get_boot_time		= pas_get_boot_time,
+	.calibrate_decr		= generic_calibrate_decr,
+	.check_legacy_ioport    = pas_check_legacy_ioport,
+	.progress		= pas_progress,
+};
diff --git a/arch/powerpc/platforms/pasemi/time.c b/arch/powerpc/platforms/pasemi/time.c
new file mode 100644
index 00000000000..9bd410b8fec
--- /dev/null
+++ b/arch/powerpc/platforms/pasemi/time.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2006 PA Semi, Inc
+ *
+ * Maintained by: Olof Johansson <olof@lixom.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/time.h>
+
+#include <asm/time.h>
+
+unsigned long __init pas_get_boot_time(void)
+{
+	/* Let's just return a fake date right now */
+	return mktime(2006, 1, 1, 12, 0, 0);
+}
diff --git a/arch/powerpc/platforms/powermac/backlight.c b/arch/powerpc/platforms/powermac/backlight.c
index d6641549105..afa593a8544 100644
--- a/arch/powerpc/platforms/powermac/backlight.c
+++ b/arch/powerpc/platforms/powermac/backlight.c
@@ -60,7 +60,8 @@ int pmac_has_backlight_type(const char *type)
 	struct device_node* bk_node = find_devices("backlight");
 
 	if (bk_node) {
-		char *prop = get_property(bk_node, "backlight-control", NULL);
+		const char *prop = get_property(bk_node,
+				"backlight-control", NULL);
 		if (prop && strncmp(prop, type, strlen(type)) == 0)
 			return 1;
 	}
diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c
index 62926248bdb..c2b6b4134f6 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_32.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_32.c
@@ -421,7 +421,7 @@ static int pmac_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 static u32 read_gpio(struct device_node *np)
 {
-	u32 *reg = (u32 *)get_property(np, "reg", NULL);
+	const u32 *reg = get_property(np, "reg", NULL);
 	u32 offset;
 
 	if (reg == NULL)
@@ -497,7 +497,7 @@ static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode)
 								"frequency-gpio");
 	struct device_node *slew_done_gpio_np = of_find_node_by_name(NULL,
 								     "slewing-done");
-	u32 *value;
+	const u32 *value;
 
 	/*
 	 * Check to see if it's GPIO driven or PMU only
@@ -519,15 +519,15 @@ static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode)
 	 */
 	if (frequency_gpio && slew_done_gpio) {
 		int lenp, rc;
-		u32 *freqs, *ratio;
+		const u32 *freqs, *ratio;
 
-		freqs = (u32 *)get_property(cpunode, "bus-frequencies", &lenp);
+		freqs = get_property(cpunode, "bus-frequencies", &lenp);
 		lenp /= sizeof(u32);
 		if (freqs == NULL || lenp != 2) {
 			printk(KERN_ERR "cpufreq: bus-frequencies incorrect or missing\n");
 			return 1;
 		}
-		ratio = (u32 *)get_property(cpunode, "processor-to-bus-ratio*2", NULL);
+		ratio = get_property(cpunode, "processor-to-bus-ratio*2", NULL);
 		if (ratio == NULL) {
 			printk(KERN_ERR "cpufreq: processor-to-bus-ratio*2 missing\n");
 			return 1;
@@ -562,7 +562,7 @@ static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode)
 	/* If we use the PMU, look for the min & max frequencies in the
 	 * device-tree
 	 */
-	value = (u32 *)get_property(cpunode, "min-clock-frequency", NULL);
+	value = get_property(cpunode, "min-clock-frequency", NULL);
 	if (!value)
 		return 1;
 	low_freq = (*value) / 1000;
@@ -571,7 +571,7 @@ static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode)
 	if (low_freq < 100000)
 		low_freq *= 10;
 
-	value = (u32 *)get_property(cpunode, "max-clock-frequency", NULL);
+	value = get_property(cpunode, "max-clock-frequency", NULL);
 	if (!value)
 		return 1;
 	hi_freq = (*value) / 1000;
@@ -611,13 +611,14 @@ static int pmac_cpufreq_init_7447A(struct device_node *cpunode)
 static int pmac_cpufreq_init_750FX(struct device_node *cpunode)
 {
 	struct device_node *volt_gpio_np;
-	u32 pvr, *value;
+	u32 pvr;
+	const u32 *value;
 
 	if (get_property(cpunode, "dynamic-power-step", NULL) == NULL)
 		return 1;
 
 	hi_freq = cur_freq;
-	value = (u32 *)get_property(cpunode, "reduced-clock-frequency", NULL);
+	value = get_property(cpunode, "reduced-clock-frequency", NULL);
 	if (!value)
 		return 1;
 	low_freq = (*value) / 1000;
@@ -650,7 +651,7 @@ static int pmac_cpufreq_init_750FX(struct device_node *cpunode)
 static int __init pmac_cpufreq_setup(void)
 {
 	struct device_node	*cpunode;
-	u32			*value;
+	const u32		*value;
 
 	if (strstr(cmd_line, "nocpufreq"))
 		return 0;
@@ -661,7 +662,7 @@ static int __init pmac_cpufreq_setup(void)
 		goto out;
 
 	/* Get current cpu clock freq */
-	value = (u32 *)get_property(cpunode, "clock-frequency", NULL);
+	value = get_property(cpunode, "clock-frequency", NULL);
 	if (!value)
 		goto out;
 	cur_freq = (*value) / 1000;
diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c
index 7b1156ea534..d30466d7419 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_64.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_64.c
@@ -89,7 +89,7 @@ static DEFINE_MUTEX(g5_switch_mutex);
 
 #ifdef CONFIG_PMAC_SMU
 
-static u32 *g5_pmode_data;
+static const u32 *g5_pmode_data;
 static int g5_pmode_max;
 
 static struct smu_sdbp_fvt *g5_fvt_table;	/* table of op. points */
@@ -391,7 +391,8 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	unsigned int psize, ssize;
 	unsigned long max_freq;
 	char *freq_method, *volt_method;
-	u32 *valp, pvr_hi;
+	const u32 *valp;
+	u32 pvr_hi;
 	int use_volts_vdnap = 0;
 	int use_volts_smu = 0;
 	int rc = -ENODEV;
@@ -409,8 +410,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	/* Get first CPU node */
 	for (cpunode = NULL;
 	     (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) {
-		u32 *reg =
-			(u32 *)get_property(cpunode, "reg", NULL);
+		const u32 *reg = get_property(cpunode, "reg", NULL);
 		if (reg == NULL || (*reg) != 0)
 			continue;
 		if (!strcmp(cpunode->type, "cpu"))
@@ -422,7 +422,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	}
 
 	/* Check 970FX for now */
-	valp = (u32 *)get_property(cpunode, "cpu-version", NULL);
+	valp = get_property(cpunode, "cpu-version", NULL);
 	if (!valp) {
 		DBG("No cpu-version property !\n");
 		goto bail_noprops;
@@ -434,7 +434,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	}
 
 	/* Look for the powertune data in the device-tree */
-	g5_pmode_data = (u32 *)get_property(cpunode, "power-mode-data",&psize);
+	g5_pmode_data = get_property(cpunode, "power-mode-data",&psize);
 	if (!g5_pmode_data) {
 		DBG("No power-mode-data !\n");
 		goto bail_noprops;
@@ -442,7 +442,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	g5_pmode_max = psize / sizeof(u32) - 1;
 
 	if (use_volts_smu) {
-		struct smu_sdbp_header *shdr;
+		const struct smu_sdbp_header *shdr;
 
 		/* Look for the FVT table */
 		shdr = smu_get_sdb_partition(SMU_SDB_FVT_ID, NULL);
@@ -493,7 +493,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	 * half freq in this version. So far, I haven't yet seen a machine
 	 * supporting anything else.
 	 */
-	valp = (u32 *)get_property(cpunode, "clock-frequency", NULL);
+	valp = get_property(cpunode, "clock-frequency", NULL);
 	if (!valp)
 		return -ENODEV;
 	max_freq = (*valp)/1000;
@@ -541,8 +541,8 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
 {
 	struct device_node *cpuid = NULL, *hwclock = NULL, *cpunode = NULL;
-	u8 *eeprom = NULL;
-	u32 *valp;
+	const u8 *eeprom = NULL;
+	const u32 *valp;
 	u64 max_freq, min_freq, ih, il;
 	int has_volt = 1, rc = 0;
 
@@ -563,7 +563,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
 	/* Lookup the cpuid eeprom node */
         cpuid = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/cpuid@a0");
 	if (cpuid != NULL)
-		eeprom = (u8 *)get_property(cpuid, "cpuid", NULL);
+		eeprom = get_property(cpuid, "cpuid", NULL);
 	if (eeprom == NULL) {
 		printk(KERN_ERR "cpufreq: Can't find cpuid EEPROM !\n");
 		rc = -ENODEV;
@@ -573,7 +573,8 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
 	/* Lookup the i2c hwclock */
 	for (hwclock = NULL;
 	     (hwclock = of_find_node_by_name(hwclock, "i2c-hwclock")) != NULL;){
-		char *loc = get_property(hwclock, "hwctrl-location", NULL);
+		const char *loc = get_property(hwclock,
+				"hwctrl-location", NULL);
 		if (loc == NULL)
 			continue;
 		if (strcmp(loc, "CPU CLOCK"))
@@ -637,7 +638,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
 	 */
 
 	/* Get max frequency from device-tree */
-	valp = (u32 *)get_property(cpunode, "clock-frequency", NULL);
+	valp = get_property(cpunode, "clock-frequency", NULL);
 	if (!valp) {
 		printk(KERN_ERR "cpufreq: Can't find CPU frequency !\n");
 		rc = -ENODEV;
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index f8313bf9a9f..13fcaf5b179 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -1058,8 +1058,8 @@ core99_reset_cpu(struct device_node *node, long param, long value)
 	if (np == NULL)
 		return -ENODEV;
 	for (np = np->child; np != NULL; np = np->sibling) {
-		u32 *num = (u32 *)get_property(np, "reg", NULL);
-		u32 *rst = (u32 *)get_property(np, "soft-reset", NULL);
+		u32 *num = get_property(np, "reg", NULL);
+		u32 *rst = get_property(np, "soft-reset", NULL);
 		if (num == NULL || rst == NULL)
 			continue;
 		if (param == *num) {
@@ -1087,7 +1087,7 @@ core99_usb_enable(struct device_node *node, long param, long value)
 {
 	struct macio_chip *macio;
 	unsigned long flags;
-	char *prop;
+	const char *prop;
 	int number;
 	u32 reg;
 
@@ -1096,7 +1096,7 @@ core99_usb_enable(struct device_node *node, long param, long value)
 	    macio->type != macio_intrepid)
 		return -ENODEV;
 
-	prop = (char *)get_property(node, "AAPL,clock-id", NULL);
+	prop = get_property(node, "AAPL,clock-id", NULL);
 	if (!prop)
 		return -ENODEV;
 	if (strncmp(prop, "usb0u048", 8) == 0)
@@ -1507,8 +1507,8 @@ static long g5_reset_cpu(struct device_node *node, long param, long value)
 	if (np == NULL)
 		return -ENODEV;
 	for (np = np->child; np != NULL; np = np->sibling) {
-		u32 *num = (u32 *)get_property(np, "reg", NULL);
-		u32 *rst = (u32 *)get_property(np, "soft-reset", NULL);
+		const u32 *num = get_property(np, "reg", NULL);
+		const u32 *rst = get_property(np, "soft-reset", NULL);
 		if (num == NULL || rst == NULL)
 			continue;
 		if (param == *num) {
@@ -2408,7 +2408,7 @@ static int __init probe_motherboard(void)
 	 */
 	dt = find_devices("device-tree");
 	if (dt != NULL)
-		model = (const char *) get_property(dt, "model", NULL);
+		model = get_property(dt, "model", NULL);
 	for(i=0; model && i<(sizeof(pmac_mb_defs)/sizeof(struct pmac_mb_def)); i++) {
 	    if (strcmp(model, pmac_mb_defs[i].model_string) == 0) {
 		pmac_mb = pmac_mb_defs[i];
@@ -2536,7 +2536,7 @@ found:
  */
 static void __init probe_uninorth(void)
 {
-	u32 *addrp;
+	const u32 *addrp;
 	phys_addr_t address;
 	unsigned long actrl;
 
@@ -2555,7 +2555,7 @@ static void __init probe_uninorth(void)
 	if (uninorth_node == NULL)
 		return;
 
-	addrp = (u32 *)get_property(uninorth_node, "reg", NULL);
+	addrp = get_property(uninorth_node, "reg", NULL);
 	if (addrp == NULL)
 		return;
 	address = of_translate_address(uninorth_node, addrp);
@@ -2596,7 +2596,7 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ
 	struct device_node*	node;
 	int			i;
 	volatile u32 __iomem	*base;
-	u32			*addrp, *revp;
+	const u32		*addrp, *revp;
 	phys_addr_t		addr;
 	u64			size;
 
@@ -2639,7 +2639,7 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ
 		return;
 	}
 	if (type == macio_keylargo || type == macio_keylargo2) {
-		u32 *did = (u32 *)get_property(node, "device-id", NULL);
+		const u32 *did = get_property(node, "device-id", NULL);
 		if (*did == 0x00000025)
 			type = macio_pangea;
 		if (*did == 0x0000003e)
@@ -2652,7 +2652,7 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ
 	macio_chips[i].base	= base;
 	macio_chips[i].flags	= MACIO_FLAG_SCCB_ON | MACIO_FLAG_SCCB_ON;
 	macio_chips[i].name	= macio_names[type];
-	revp = (u32 *)get_property(node, "revision-id", NULL);
+	revp = get_property(node, "revision-id", NULL);
 	if (revp)
 		macio_chips[i].rev = *revp;
 	printk(KERN_INFO "Found a %s mac-io controller, rev: %d, mapped at 0x%p\n",
@@ -2695,15 +2695,15 @@ static void __init
 initial_serial_shutdown(struct device_node *np)
 {
 	int len;
-	struct slot_names_prop {
+	const struct slot_names_prop {
 		int	count;
 		char	name[1];
 	} *slots;
-	char *conn;
+	const char *conn;
 	int port_type = PMAC_SCC_ASYNC;
 	int modem = 0;
 
-	slots = (struct slot_names_prop *)get_property(np, "slot-names", &len);
+	slots = get_property(np, "slot-names", &len);
 	conn = get_property(np, "AAPL,connector", &len);
 	if (conn && (strcmp(conn, "infrared") == 0))
 		port_type = PMAC_SCC_IRDA;
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index 8677f50c258..c2c7cf75dd5 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -477,7 +477,8 @@ static int kw_i2c_xfer(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,
 static struct pmac_i2c_host_kw *__init kw_i2c_host_init(struct device_node *np)
 {
 	struct pmac_i2c_host_kw *host;
-	u32			*psteps, *prate, *addrp, steps;
+	const u32		*psteps, *prate, *addrp;
+	u32			steps;
 
 	host = kzalloc(sizeof(struct pmac_i2c_host_kw), GFP_KERNEL);
 	if (host == NULL) {
@@ -490,7 +491,7 @@ static struct pmac_i2c_host_kw *__init kw_i2c_host_init(struct device_node *np)
 	 * on all i2c keywest nodes so far ... we would have to fallback
 	 * to macio parsing if that wasn't the case
 	 */
-	addrp = (u32 *)get_property(np, "AAPL,address", NULL);
+	addrp = get_property(np, "AAPL,address", NULL);
 	if (addrp == NULL) {
 		printk(KERN_ERR "low_i2c: Can't find address for %s\n",
 		       np->full_name);
@@ -504,13 +505,13 @@ static struct pmac_i2c_host_kw *__init kw_i2c_host_init(struct device_node *np)
 	host->timeout_timer.function = kw_i2c_timeout;
 	host->timeout_timer.data = (unsigned long)host;
 
-	psteps = (u32 *)get_property(np, "AAPL,address-step", NULL);
+	psteps = get_property(np, "AAPL,address-step", NULL);
 	steps = psteps ? (*psteps) : 0x10;
 	for (host->bsteps = 0; (steps & 0x01) == 0; host->bsteps++)
 		steps >>= 1;
 	/* Select interface rate */
 	host->speed = KW_I2C_MODE_25KHZ;
-	prate = (u32 *)get_property(np, "AAPL,i2c-rate", NULL);
+	prate = get_property(np, "AAPL,i2c-rate", NULL);
 	if (prate) switch(*prate) {
 	case 100:
 		host->speed = KW_I2C_MODE_100KHZ;
@@ -618,8 +619,8 @@ static void __init kw_i2c_probe(void)
 		} else {
 			for (child = NULL;
 			     (child = of_get_next_child(np, child)) != NULL;) {
-				u32 *reg =
-					(u32 *)get_property(child, "reg", NULL);
+				const u32 *reg = get_property(child,
+						"reg", NULL);
 				if (reg == NULL)
 					continue;
 				kw_i2c_add(host, np, child, *reg);
@@ -881,7 +882,7 @@ static void __init smu_i2c_probe(void)
 {
 	struct device_node *controller, *busnode;
 	struct pmac_i2c_bus *bus;
-	u32 *reg;
+	const u32 *reg;
 	int sz;
 
 	if (!smu_present())
@@ -904,7 +905,7 @@ static void __init smu_i2c_probe(void)
 		if (strcmp(busnode->type, "i2c") &&
 		    strcmp(busnode->type, "i2c-bus"))
 			continue;
-		reg = (u32 *)get_property(busnode, "reg", NULL);
+		reg = get_property(busnode, "reg", NULL);
 		if (reg == NULL)
 			continue;
 
@@ -948,9 +949,8 @@ struct pmac_i2c_bus *pmac_i2c_find_bus(struct device_node *node)
 		list_for_each_entry(bus, &pmac_i2c_busses, link) {
 			if (p == bus->busnode) {
 				if (prev && bus->flags & pmac_i2c_multibus) {
-					u32 *reg;
-					reg = (u32 *)get_property(prev, "reg",
-								  NULL);
+					const u32 *reg;
+					reg = get_property(prev, "reg", NULL);
 					if (!reg)
 						continue;
 					if (((*reg) >> 8) != bus->channel)
@@ -971,7 +971,7 @@ EXPORT_SYMBOL_GPL(pmac_i2c_find_bus);
 
 u8 pmac_i2c_get_dev_addr(struct device_node *device)
 {
-	u32 *reg = (u32 *)get_property(device, "reg", NULL);
+	const u32 *reg = get_property(device, "reg", NULL);
 
 	if (reg == NULL)
 		return 0;
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 205d0447116..9923adc5248 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -66,16 +66,16 @@ struct device_node *k2_skiplist[2];
 static int __init fixup_one_level_bus_range(struct device_node *node, int higher)
 {
 	for (; node != 0;node = node->sibling) {
-		int * bus_range;
-		unsigned int *class_code;
+		const int * bus_range;
+		const unsigned int *class_code;
 		int len;
 
 		/* For PCI<->PCI bridges or CardBus bridges, we go down */
-		class_code = (unsigned int *) get_property(node, "class-code", NULL);
+		class_code = get_property(node, "class-code", NULL);
 		if (!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
 			(*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
 			continue;
-		bus_range = (int *) get_property(node, "bus-range", &len);
+		bus_range = get_property(node, "bus-range", &len);
 		if (bus_range != NULL && len > 2 * sizeof(int)) {
 			if (bus_range[1] > higher)
 				higher = bus_range[1];
@@ -93,13 +93,15 @@ static int __init fixup_one_level_bus_range(struct device_node *node, int higher
  */
 static void __init fixup_bus_range(struct device_node *bridge)
 {
-	int * bus_range;
-	int len;
+	int *bus_range, len;
+	struct property *prop;
 
 	/* Lookup the "bus-range" property for the hose */
-	bus_range = (int *) get_property(bridge, "bus-range", &len);
-	if (bus_range == NULL || len < 2 * sizeof(int))
+	prop = of_find_property(bridge, "bus-range", &len);
+	if (prop == NULL || prop->length < 2 * sizeof(int))
 		return;
+
+	bus_range = (int *)prop->value;
 	bus_range[1] = fixup_one_level_bus_range(bridge->child, bus_range[1]);
 }
 
@@ -237,7 +239,7 @@ static struct pci_ops macrisc_pci_ops =
 static int chaos_validate_dev(struct pci_bus *bus, int devfn, int offset)
 {
 	struct device_node *np;
-	u32 *vendor, *device;
+	const u32 *vendor, *device;
 
 	if (offset >= 0x100)
 		return  PCIBIOS_BAD_REGISTER_NUMBER;
@@ -245,8 +247,8 @@ static int chaos_validate_dev(struct pci_bus *bus, int devfn, int offset)
 	if (np == NULL)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
-	vendor = (u32 *)get_property(np, "vendor-id", NULL);
-	device = (u32 *)get_property(np, "device-id", NULL);
+	vendor = get_property(np, "vendor-id", NULL);
+	device = get_property(np, "device-id", NULL);
 	if (vendor == NULL || device == NULL)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
@@ -686,20 +688,21 @@ static void __init fixup_nec_usb2(void)
 
 	for (nec = NULL; (nec = of_find_node_by_name(nec, "usb")) != NULL;) {
 		struct pci_controller *hose;
-		u32 data, *prop;
+		u32 data;
+		const u32 *prop;
 		u8 bus, devfn;
 
-		prop = (u32 *)get_property(nec, "vendor-id", NULL);
+		prop = get_property(nec, "vendor-id", NULL);
 		if (prop == NULL)
 			continue;
 		if (0x1033 != *prop)
 			continue;
-		prop = (u32 *)get_property(nec, "device-id", NULL);
+		prop = get_property(nec, "device-id", NULL);
 		if (prop == NULL)
 			continue;
 		if (0x0035 != *prop)
 			continue;
-		prop = (u32 *)get_property(nec, "reg", NULL);
+		prop = get_property(nec, "reg", NULL);
 		if (prop == NULL)
 			continue;
 		devfn = (prop[0] >> 8) & 0xff;
@@ -898,7 +901,7 @@ static int __init add_bridge(struct device_node *dev)
 	struct pci_controller *hose;
 	struct resource rsrc;
 	char *disp_name;
-	int *bus_range;
+	const int *bus_range;
 	int primary = 1, has_address = 0;
 
 	DBG("Adding PCI host bridge %s\n", dev->full_name);
@@ -907,7 +910,7 @@ static int __init add_bridge(struct device_node *dev)
 	has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
 
 	/* Get bus range if any */
-	bus_range = (int *) get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, assume"
 		       " bus 0\n", dev->full_name);
diff --git a/arch/powerpc/platforms/powermac/pfunc_base.c b/arch/powerpc/platforms/powermac/pfunc_base.c
index aacfa59595d..ee3b223ab17 100644
--- a/arch/powerpc/platforms/powermac/pfunc_base.c
+++ b/arch/powerpc/platforms/powermac/pfunc_base.c
@@ -114,7 +114,7 @@ static void macio_gpio_init_one(struct macio_chip *macio)
 	 * we just create them all
 	 */
 	for (gp = NULL; (gp = of_get_next_child(gparent, gp)) != NULL;) {
-		u32 *reg = (u32 *)get_property(gp, "reg", NULL);
+		const u32 *reg = get_property(gp, "reg", NULL);
 		unsigned long offset;
 		if (reg == NULL)
 			continue;
diff --git a/arch/powerpc/platforms/powermac/pfunc_core.c b/arch/powerpc/platforms/powermac/pfunc_core.c
index b117adbf957..7651f278615 100644
--- a/arch/powerpc/platforms/powermac/pfunc_core.c
+++ b/arch/powerpc/platforms/powermac/pfunc_core.c
@@ -813,14 +813,15 @@ struct pmf_function *__pmf_find_function(struct device_node *target,
 	struct pmf_device *dev;
 	struct pmf_function *func, *result = NULL;
 	char fname[64];
-	u32 *prop, ph;
+	const u32 *prop;
+	u32 ph;
 
 	/*
 	 * Look for a "platform-*" function reference. If we can't find
 	 * one, then we fallback to a direct call attempt
 	 */
 	snprintf(fname, 63, "platform-%s", name);
-	prop = (u32 *)get_property(target, fname, NULL);
+	prop = get_property(target, fname, NULL);
 	if (prop == NULL)
 		goto find_it;
 	ph = *prop;
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 31a9da769fa..824a618396a 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -116,7 +116,7 @@ extern struct smp_ops_t core99_smp_ops;
 static void pmac_show_cpuinfo(struct seq_file *m)
 {
 	struct device_node *np;
-	char *pp;
+	const char *pp;
 	int plen;
 	int mbmodel;
 	unsigned int mbflags;
@@ -134,12 +134,12 @@ static void pmac_show_cpuinfo(struct seq_file *m)
 	seq_printf(m, "machine\t\t: ");
 	np = of_find_node_by_path("/");
 	if (np != NULL) {
-		pp = (char *) get_property(np, "model", NULL);
+		pp = get_property(np, "model", NULL);
 		if (pp != NULL)
 			seq_printf(m, "%s\n", pp);
 		else
 			seq_printf(m, "PowerMac\n");
-		pp = (char *) get_property(np, "compatible", &plen);
+		pp = get_property(np, "compatible", &plen);
 		if (pp != NULL) {
 			seq_printf(m, "motherboard\t:");
 			while (plen > 0) {
@@ -163,10 +163,8 @@ static void pmac_show_cpuinfo(struct seq_file *m)
 	if (np == NULL)
 		np = of_find_node_by_type(NULL, "cache");
 	if (np != NULL) {
-		unsigned int *ic = (unsigned int *)
-			get_property(np, "i-cache-size", NULL);
-		unsigned int *dc = (unsigned int *)
-			get_property(np, "d-cache-size", NULL);
+		const unsigned int *ic = get_property(np, "i-cache-size", NULL);
+		const unsigned int *dc = get_property(np, "d-cache-size", NULL);
 		seq_printf(m, "L2 cache\t:");
 		has_l2cache = 1;
 		if (get_property(np, "cache-unified", NULL) != 0 && dc) {
@@ -254,7 +252,7 @@ static void __init l2cr_init(void)
 		if (np == 0)
 			np = find_type_devices("cpu");
 		if (np != 0) {
-			unsigned int *l2cr = (unsigned int *)
+			const unsigned int *l2cr =
 				get_property(np, "l2cr-value", NULL);
 			if (l2cr != 0) {
 				ppc_override_l2cr = 1;
@@ -277,7 +275,7 @@ static void __init l2cr_init(void)
 static void __init pmac_setup_arch(void)
 {
 	struct device_node *cpu, *ic;
-	int *fp;
+	const int *fp;
 	unsigned long pvr;
 
 	pvr = PVR_VER(mfspr(SPRN_PVR));
@@ -287,7 +285,7 @@ static void __init pmac_setup_arch(void)
 	loops_per_jiffy = 50000000 / HZ;
 	cpu = of_find_node_by_type(NULL, "cpu");
 	if (cpu != NULL) {
-		fp = (int *) get_property(cpu, "clock-frequency", NULL);
+		fp = get_property(cpu, "clock-frequency", NULL);
 		if (fp != NULL) {
 			if (pvr >= 0x30 && pvr < 0x80)
 				/* PPC970 etc. */
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 827b7121ffb..653eeb64d1e 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -548,7 +548,7 @@ static void __init smp_core99_setup_i2c_hwsync(int ncpus)
 	struct device_node *cc = NULL;	
 	struct device_node *p;
 	const char *name = NULL;
-	u32 *reg;
+	const u32 *reg;
 	int ok;
 
 	/* Look for the clock chip */
@@ -562,7 +562,7 @@ static void __init smp_core99_setup_i2c_hwsync(int ncpus)
 		pmac_tb_clock_chip_host = pmac_i2c_find_bus(cc);
 		if (pmac_tb_clock_chip_host == NULL)
 			continue;
-		reg = (u32 *)get_property(cc, "reg", NULL);
+		reg = get_property(cc, "reg", NULL);
 		if (reg == NULL)
 			continue;
 		switch (*reg) {
@@ -707,8 +707,7 @@ static void __init smp_core99_setup(int ncpus)
 		core99_tb_gpio = KL_GPIO_TB_ENABLE;	/* default value */
 		cpu = of_find_node_by_type(NULL, "cpu");
 		if (cpu != NULL) {
-			tbprop = (u32 *)get_property(cpu, "timebase-enable",
-						     NULL);
+			tbprop = get_property(cpu, "timebase-enable", NULL);
 			if (tbprop)
 				core99_tb_gpio = *tbprop;
 			of_node_put(cpu);
diff --git a/arch/powerpc/platforms/powermac/udbg_scc.c b/arch/powerpc/platforms/powermac/udbg_scc.c
index 37e5b1eff91..ce1a235855f 100644
--- a/arch/powerpc/platforms/powermac/udbg_scc.c
+++ b/arch/powerpc/platforms/powermac/udbg_scc.c
@@ -68,11 +68,11 @@ static unsigned char scc_inittab[] = {
 
 void udbg_scc_init(int force_scc)
 {
-	u32 *reg;
+	const u32 *reg;
 	unsigned long addr;
 	struct device_node *stdout = NULL, *escc = NULL, *macio = NULL;
 	struct device_node *ch, *ch_def = NULL, *ch_a = NULL;
-	char *path;
+	const char *path;
 	int i, x;
 
 	escc = of_find_node_by_name(NULL, "escc");
@@ -81,7 +81,7 @@ void udbg_scc_init(int force_scc)
 	macio = of_get_parent(escc);
 	if (macio == NULL)
 		goto bail;
-	path = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+	path = get_property(of_chosen, "linux,stdout-path", NULL);
 	if (path != NULL)
 		stdout = of_find_node_by_path(path);
 	for (ch = NULL; (ch = of_get_next_child(escc, ch)) != NULL;) {
@@ -96,13 +96,13 @@ void udbg_scc_init(int force_scc)
 	ch = ch_def ? ch_def : ch_a;
 
 	/* Get address within mac-io ASIC */
-	reg = (u32 *)get_property(escc, "reg", NULL);
+	reg = get_property(escc, "reg", NULL);
 	if (reg == NULL)
 		goto bail;
 	addr = reg[0];
 
 	/* Get address of mac-io PCI itself */
-	reg = (u32 *)get_property(macio, "assigned-addresses", NULL);
+	reg = get_property(macio, "assigned-addresses", NULL);
 	if (reg == NULL)
 		goto bail;
 	addr += reg[2];
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index e5e0ff46690..997243a91be 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_EEH)	+= eeh.o eeh_cache.o eeh_driver.o eeh_event.o
 
 obj-$(CONFIG_HVC_CONSOLE)	+= hvconsole.o
 obj-$(CONFIG_HVCS)		+= hvcserver.o
+obj-$(CONFIG_HCALL_STATS)	+= hvCall_inst.o
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 32eaddfa547..84bc8f7e17e 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -449,7 +449,11 @@ EXPORT_SYMBOL(eeh_check_failure);
 /* ------------------------------------------------------------- */
 /* The code below deals with error recovery */
 
-/** Return negative value if a permanent error, else return
+/**
+ * eeh_slot_availability - returns error status of slot
+ * @pdn pci device node
+ *
+ * Return negative value if a permanent error, else return
  * a number of milliseconds to wait until the PCI slot is
  * ready to be used.
  */
@@ -474,11 +478,42 @@ eeh_slot_availability(struct pci_dn *pdn)
 
 	printk (KERN_ERR "EEH: Slot unavailable: rc=%d, rets=%d %d %d\n",
 		rc, rets[0], rets[1], rets[2]);
-	return -1;
+	return -2;
+}
+
+/**
+ * rtas_pci_enable - enable MMIO or DMA transfers for this slot
+ * @pdn pci device node
+ */
+
+int
+rtas_pci_enable(struct pci_dn *pdn, int function)
+{
+	int config_addr;
+	int rc;
+
+	/* Use PE configuration address, if present */
+	config_addr = pdn->eeh_config_addr;
+	if (pdn->eeh_pe_config_addr)
+		config_addr = pdn->eeh_pe_config_addr;
+
+	rc = rtas_call(ibm_set_eeh_option, 4, 1, NULL,
+	               config_addr,
+	               BUID_HI(pdn->phb->buid),
+	               BUID_LO(pdn->phb->buid),
+		            function);
+
+	if (rc)
+		printk(KERN_WARNING "EEH: Cannot enable function %d, err=%d dn=%s\n",
+		        function, rc, pdn->node->full_name);
+
+	return rc;
 }
 
-/** rtas_pci_slot_reset raises/lowers the pci #RST line
- *  state: 1/0 to raise/lower the #RST
+/**
+ * rtas_pci_slot_reset - raises/lowers the pci #RST line
+ * @pdn pci device node
+ * @state: 1/0 to raise/lower the #RST
  *
  * Clear the EEH-frozen condition on a slot.  This routine
  * asserts the PCI #RST line if the 'state' argument is '1',
@@ -511,24 +546,21 @@ rtas_pci_slot_reset(struct pci_dn *pdn, int state)
 	               BUID_HI(pdn->phb->buid),
 	               BUID_LO(pdn->phb->buid),
 	               state);
-	if (rc) {
-		printk (KERN_WARNING "EEH: Unable to reset the failed slot, (%d) #RST=%d dn=%s\n", 
+	if (rc)
+		printk (KERN_WARNING "EEH: Unable to reset the failed slot,"
+		        " (%d) #RST=%d dn=%s\n",
 		        rc, state, pdn->node->full_name);
-		return;
-	}
 }
 
-/** rtas_set_slot_reset -- assert the pci #RST line for 1/4 second
- *  dn -- device node to be reset.
+/**
+ * rtas_set_slot_reset -- assert the pci #RST line for 1/4 second
+ * @pdn: pci device node to be reset.
  *
  *  Return 0 if success, else a non-zero value.
  */
 
-int
-rtas_set_slot_reset(struct pci_dn *pdn)
+static void __rtas_set_slot_reset(struct pci_dn *pdn)
 {
-	int i, rc;
-
 	rtas_pci_slot_reset (pdn, 1);
 
 	/* The PCI bus requires that the reset be held high for at least
@@ -549,17 +581,33 @@ rtas_set_slot_reset(struct pci_dn *pdn)
 	 * up traffic. */
 #define PCI_BUS_SETTLE_TIME_MSEC 1800
 	msleep (PCI_BUS_SETTLE_TIME_MSEC);
+}
+
+int rtas_set_slot_reset(struct pci_dn *pdn)
+{
+	int i, rc;
+
+	__rtas_set_slot_reset(pdn);
 
 	/* Now double check with the firmware to make sure the device is
 	 * ready to be used; if not, wait for recovery. */
 	for (i=0; i<10; i++) {
 		rc = eeh_slot_availability (pdn);
-		if (rc < 0)
-			printk (KERN_ERR "EEH: failed (%d) to reset slot %s\n", rc, pdn->node->full_name);
 		if (rc == 0)
 			return 0;
-		if (rc < 0)
+
+		if (rc == -2) {
+			printk (KERN_ERR "EEH: failed (%d) to reset slot %s\n",
+			        i, pdn->node->full_name);
+			__rtas_set_slot_reset(pdn);
+			continue;
+		}
+
+		if (rc < 0) {
+			printk (KERN_ERR "EEH: unrecoverable slot failure %s\n",
+			        pdn->node->full_name);
 			return -1;
+		}
 
 		msleep (rc+100);
 	}
@@ -582,6 +630,8 @@ rtas_set_slot_reset(struct pci_dn *pdn)
 
 /**
  * __restore_bars - Restore the Base Address Registers
+ * @pdn: pci device node
+ *
  * Loads the PCI configuration space base address registers,
  * the expansion ROM base address, the latency timer, and etc.
  * from the saved values in the device node.
@@ -691,11 +741,11 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
 {
 	struct eeh_early_enable_info *info = data;
 	int ret;
-	char *status = get_property(dn, "status", NULL);
-	u32 *class_code = (u32 *)get_property(dn, "class-code", NULL);
-	u32 *vendor_id = (u32 *)get_property(dn, "vendor-id", NULL);
-	u32 *device_id = (u32 *)get_property(dn, "device-id", NULL);
-	u32 *regs;
+	const char *status = get_property(dn, "status", NULL);
+	const u32 *class_code = get_property(dn, "class-code", NULL);
+	const u32 *vendor_id = get_property(dn, "vendor-id", NULL);
+	const u32 *device_id = get_property(dn, "device-id", NULL);
+	const u32 *regs;
 	int enable;
 	struct pci_dn *pdn = PCI_DN(dn);
 
@@ -737,7 +787,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
 
 	/* Ok... see if this device supports EEH.  Some do, some don't,
 	 * and the only way to find out is to check each and every one. */
-	regs = (u32 *)get_property(dn, "reg", NULL);
+	regs = get_property(dn, "reg", NULL);
 	if (regs) {
 		/* First register entry is addr (00BBSS00)  */
 		/* Try to enable eeh */
diff --git a/arch/powerpc/platforms/pseries/eeh_cache.c b/arch/powerpc/platforms/pseries/eeh_cache.c
index c37a8497c60..b6b462d3c60 100644
--- a/arch/powerpc/platforms/pseries/eeh_cache.c
+++ b/arch/powerpc/platforms/pseries/eeh_cache.c
@@ -157,6 +157,7 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
 	if (!piar)
 		return NULL;
 
+	pci_dev_get(dev);
 	piar->addr_lo = alo;
 	piar->addr_hi = ahi;
 	piar->pcidev = dev;
@@ -178,7 +179,6 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
 	struct device_node *dn;
 	struct pci_dn *pdn;
 	int i;
-	int inserted = 0;
 
 	dn = pci_device_to_OF_node(dev);
 	if (!dn) {
@@ -197,9 +197,6 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
 		return;
 	}
 
-	/* The cache holds a reference to the device... */
-	pci_dev_get(dev);
-
 	/* Walk resources on this device, poke them into the tree */
 	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 		unsigned long start = pci_resource_start(dev,i);
@@ -212,12 +209,7 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
 		if (start == 0 || ~start == 0 || end == 0 || ~end == 0)
 			 continue;
 		pci_addr_cache_insert(dev, start, end, flags);
-		inserted = 1;
 	}
-
-	/* If there was nothing to add, the cache has no reference... */
-	if (!inserted)
-		pci_dev_put(dev);
 }
 
 /**
@@ -240,7 +232,6 @@ void pci_addr_cache_insert_device(struct pci_dev *dev)
 static inline void __pci_addr_cache_remove_device(struct pci_dev *dev)
 {
 	struct rb_node *n;
-	int removed = 0;
 
 restart:
 	n = rb_first(&pci_io_addr_cache_root.rb_root);
@@ -250,16 +241,12 @@ restart:
 
 		if (piar->pcidev == dev) {
 			rb_erase(n, &pci_io_addr_cache_root.rb_root);
-			removed = 1;
+			pci_dev_put(piar->pcidev);
 			kfree(piar);
 			goto restart;
 		}
 		n = rb_next(n);
 	}
-
-	/* The cache no longer holds its reference to this device... */
-	if (removed)
-		pci_dev_put(dev);
 }
 
 /**
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index aaad2c0afcb..c2bc9904f1c 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -77,8 +77,12 @@ static int irq_in_use(unsigned int irq)
 }
 
 /* ------------------------------------------------------- */
-/** eeh_report_error - report an EEH error to each device,
- *  collect up and merge the device responses.
+/**
+ * eeh_report_error - report pci error to each device driver
+ * 
+ * Report an EEH error to each device driver, collect up and 
+ * merge the device driver responses. Cumulative response 
+ * passed back in "userdata".
  */
 
 static void eeh_report_error(struct pci_dev *dev, void *userdata)
@@ -96,24 +100,49 @@ static void eeh_report_error(struct pci_dev *dev, void *userdata)
 		PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED;
 		disable_irq_nosync(dev->irq);
 	}
-	if (!driver->err_handler)
-		return;
-	if (!driver->err_handler->error_detected)
+	if (!driver->err_handler ||
+	    !driver->err_handler->error_detected)
 		return;
 
 	rc = driver->err_handler->error_detected (dev, pci_channel_io_frozen);
 	if (*res == PCI_ERS_RESULT_NONE) *res = rc;
-	if (*res == PCI_ERS_RESULT_NEED_RESET) return;
 	if (*res == PCI_ERS_RESULT_DISCONNECT &&
 	     rc == PCI_ERS_RESULT_NEED_RESET) *res = rc;
 }
 
-/** eeh_report_reset -- tell this device that the pci slot
- *  has been reset.
+/**
+ * eeh_report_mmio_enabled - tell drivers that MMIO has been enabled
+ *
+ * Report an EEH error to each device driver, collect up and
+ * merge the device driver responses. Cumulative response
+ * passed back in "userdata".
+ */
+
+static void eeh_report_mmio_enabled(struct pci_dev *dev, void *userdata)
+{
+	enum pci_ers_result rc, *res = userdata;
+	struct pci_driver *driver = dev->driver;
+
+	// dev->error_state = pci_channel_mmio_enabled;
+
+	if (!driver ||
+	    !driver->err_handler ||
+	    !driver->err_handler->mmio_enabled)
+		return;
+
+	rc = driver->err_handler->mmio_enabled (dev);
+	if (*res == PCI_ERS_RESULT_NONE) *res = rc;
+	if (*res == PCI_ERS_RESULT_DISCONNECT &&
+	     rc == PCI_ERS_RESULT_NEED_RESET) *res = rc;
+}
+
+/**
+ * eeh_report_reset - tell device that slot has been reset
  */
 
 static void eeh_report_reset(struct pci_dev *dev, void *userdata)
 {
+	enum pci_ers_result rc, *res = userdata;
 	struct pci_driver *driver = dev->driver;
 	struct device_node *dn = pci_device_to_OF_node(dev);
 
@@ -124,14 +153,20 @@ static void eeh_report_reset(struct pci_dev *dev, void *userdata)
 		PCI_DN(dn)->eeh_mode &= ~EEH_MODE_IRQ_DISABLED;
 		enable_irq(dev->irq);
 	}
-	if (!driver->err_handler)
-		return;
-	if (!driver->err_handler->slot_reset)
+	if (!driver->err_handler ||
+	    !driver->err_handler->slot_reset)
 		return;
 
-	driver->err_handler->slot_reset(dev);
+	rc = driver->err_handler->slot_reset(dev);
+	if (*res == PCI_ERS_RESULT_NONE) *res = rc;
+	if (*res == PCI_ERS_RESULT_DISCONNECT &&
+	     rc == PCI_ERS_RESULT_NEED_RESET) *res = rc;
 }
 
+/**
+ * eeh_report_resume - tell device to resume normal operations
+ */
+
 static void eeh_report_resume(struct pci_dev *dev, void *userdata)
 {
 	struct pci_driver *driver = dev->driver;
@@ -148,6 +183,13 @@ static void eeh_report_resume(struct pci_dev *dev, void *userdata)
 	driver->err_handler->resume(dev);
 }
 
+/**
+ * eeh_report_failure - tell device driver that device is dead.
+ *
+ * This informs the device driver that the device is permanently
+ * dead, and that no further recovery attempts will be made on it.
+ */
+
 static void eeh_report_failure(struct pci_dev *dev, void *userdata)
 {
 	struct pci_driver *driver = dev->driver;
@@ -190,11 +232,11 @@ static void eeh_report_failure(struct pci_dev *dev, void *userdata)
 
 /**
  * eeh_reset_device() -- perform actual reset of a pci slot
- * Args: bus: pointer to the pci bus structure corresponding
+ * @bus: pointer to the pci bus structure corresponding
  *            to the isolated slot. A non-null value will
  *            cause all devices under the bus to be removed
  *            and then re-added.
- *     pe_dn: pointer to a "Partionable Endpoint" device node.
+ * @pe_dn: pointer to a "Partionable Endpoint" device node.
  *            This is the top-level structure on which pci
  *            bus resets can be performed.
  */
@@ -268,14 +310,14 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
 
 	if (!frozen_dn) {
 
-		location = (char *) get_property(event->dn, "ibm,loc-code", NULL);
+		location = get_property(event->dn, "ibm,loc-code", NULL);
 		location = location ? location : "unknown";
 		printk(KERN_ERR "EEH: Error: Cannot find partition endpoint "
 		                "for location=%s pci addr=%s\n",
 		        location, pci_name(event->dev));
 		return NULL;
 	}
-	location = (char *) get_property(frozen_dn, "ibm,loc-code", NULL);
+	location = get_property(frozen_dn, "ibm,loc-code", NULL);
 	location = location ? location : "unknown";
 
 	/* There are two different styles for coming up with the PE.
@@ -347,23 +389,43 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
 			goto hard_fail;
 	}
 
-	/* If any device called out for a reset, then reset the slot */
-	if (result == PCI_ERS_RESULT_NEED_RESET) {
-		rc = eeh_reset_device(frozen_pdn, NULL);
-		if (rc)
-			goto hard_fail;
-		pci_walk_bus(frozen_bus, eeh_report_reset, NULL);
+	/* If all devices reported they can proceed, then re-enable MMIO */
+	if (result == PCI_ERS_RESULT_CAN_RECOVER) {
+		rc = rtas_pci_enable(frozen_pdn, EEH_THAW_MMIO);
+
+		if (rc) {
+			result = PCI_ERS_RESULT_NEED_RESET;
+		} else {
+			result = PCI_ERS_RESULT_NONE;
+			pci_walk_bus(frozen_bus, eeh_report_mmio_enabled, &result);
+		}
 	}
 
-	/* If all devices reported they can proceed, the re-enable PIO */
+	/* If all devices reported they can proceed, then re-enable DMA */
 	if (result == PCI_ERS_RESULT_CAN_RECOVER) {
-		/* XXX Not supported; we brute-force reset the device */
+		rc = rtas_pci_enable(frozen_pdn, EEH_THAW_DMA);
+
+		if (rc)
+			result = PCI_ERS_RESULT_NEED_RESET;
+	}
+
+	/* If any device has a hard failure, then shut off everything. */
+	if (result == PCI_ERS_RESULT_DISCONNECT)
+		goto hard_fail;
+
+	/* If any device called out for a reset, then reset the slot */
+	if (result == PCI_ERS_RESULT_NEED_RESET) {
 		rc = eeh_reset_device(frozen_pdn, NULL);
 		if (rc)
 			goto hard_fail;
-		pci_walk_bus(frozen_bus, eeh_report_reset, NULL);
+		result = PCI_ERS_RESULT_NONE;
+		pci_walk_bus(frozen_bus, eeh_report_reset, &result);
 	}
 
+	/* All devices should claim they have recovered by now. */
+	if (result != PCI_ERS_RESULT_RECOVERED)
+		goto hard_fail;
+
 	/* Tell all device drivers that they can resume operations */
 	pci_walk_bus(frozen_bus, eeh_report_resume, NULL);
 
diff --git a/arch/powerpc/platforms/pseries/eeh_event.c b/arch/powerpc/platforms/pseries/eeh_event.c
index 45ccc687e57..13707745131 100644
--- a/arch/powerpc/platforms/pseries/eeh_event.c
+++ b/arch/powerpc/platforms/pseries/eeh_event.c
@@ -124,11 +124,11 @@ int eeh_send_failure_event (struct device_node *dn,
 {
 	unsigned long flags;
 	struct eeh_event *event;
-	char *location;
+	const char *location;
 
 	if (!mem_init_done) {
 		printk(KERN_ERR "EEH: event during early boot not handled\n");
-		location = (char *) get_property(dn, "ibm,loc-code", NULL);
+		location = get_property(dn, "ibm,loc-code", NULL);
 		printk(KERN_ERR "EEH: device node = %s\n", dn->full_name);
 		printk(KERN_ERR "EEH: PCI location = %s\n", location);
 		return 1;
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
index c01d8f0cbe6..1c7b2baa5f7 100644
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -68,7 +68,7 @@ firmware_features_table[FIRMWARE_MAX_FEATURES] = {
 void __init fw_feature_init(void)
 {
 	struct device_node *dn;
-	char *hypertas, *s;
+	const char *hypertas, *s;
 	int len, i;
 
 	DBG(" -> fw_feature_init()\n");
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index c9ff547f9d2..c00cfed7af2 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -1,7 +1,6 @@
 /*
  * This file contains the generic code to perform a call to the
  * pSeries LPAR hypervisor.
- * NOTE: this file will go away when we move to inline this work.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -11,217 +10,153 @@
 #include <asm/hvcall.h>
 #include <asm/processor.h>
 #include <asm/ppc_asm.h>
+#include <asm/asm-offsets.h>
 	
 #define STK_PARM(i)     (48 + ((i)-3)*8)
 
-	.text
-
-/* long plpar_hcall(unsigned long opcode,		R3
-			unsigned long arg1,		R4
-			unsigned long arg2,		R5
-			unsigned long arg3,		R6
-			unsigned long arg4,		R7
-			unsigned long *out1,		R8
-			unsigned long *out2,		R9
-			unsigned long *out3);		R10
+#ifdef CONFIG_HCALL_STATS
+/*
+ * precall must preserve all registers.  use unused STK_PARM()
+ * areas to save snapshots and opcode.
  */
-_GLOBAL(plpar_hcall)
-	HMT_MEDIUM
-
-	mfcr	r0
-
-	std	r8,STK_PARM(r8)(r1)	/* Save out ptrs */
-	std	r9,STK_PARM(r9)(r1)
-	std	r10,STK_PARM(r10)(r1)
-
-	stw	r0,8(r1)
-
-	HVSC				/* invoke the hypervisor */
-
-	lwz	r0,8(r1)
-
-	ld	r8,STK_PARM(r8)(r1)	/* Fetch r4-r6 ret args */
-	ld	r9,STK_PARM(r9)(r1)
-	ld	r10,STK_PARM(r10)(r1)
-	std	r4,0(r8)
-	std	r5,0(r9)
-	std	r6,0(r10)
-
-	mtcrf	0xff,r0
-	blr				/* return r3 = status */
+#define HCALL_INST_PRECALL					\
+	std	r3,STK_PARM(r3)(r1);	/* save opcode */	\
+	mftb	r0;			/* get timebase and */	\
+	std     r0,STK_PARM(r5)(r1);	/* save for later */	\
+BEGIN_FTR_SECTION;						\
+	mfspr	r0,SPRN_PURR;		/* get PURR and */	\
+	std	r0,STK_PARM(r6)(r1);	/* save for later */	\
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR);
+	
+/*
+ * postcall is performed immediately before function return which
+ * allows liberal use of volatile registers.
+ */
+#define HCALL_INST_POSTCALL					\
+	ld	r4,STK_PARM(r3)(r1);	/* validate opcode */	\
+	cmpldi	cr7,r4,MAX_HCALL_OPCODE;			\
+	bgt-	cr7,1f;						\
+								\
+	/* get time and PURR snapshots after hcall */		\
+	mftb	r7;			/* timebase after */	\
+BEGIN_FTR_SECTION;						\
+	mfspr	r8,SPRN_PURR;		/* PURR after */	\
+	ld	r6,STK_PARM(r6)(r1);	/* PURR before */	\
+	subf	r6,r6,r8;		/* delta */		\
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR);				\
+	ld	r5,STK_PARM(r5)(r1);	/* timebase before */	\
+	subf	r5,r5,r7;		/* time delta */	\
+								\
+	/* calculate address of stat structure r4 = opcode */	\
+	srdi	r4,r4,2;		/* index into array */	\
+	mulli	r4,r4,HCALL_STAT_SIZE;				\
+	LOAD_REG_ADDR(r7, per_cpu__hcall_stats);		\
+	add	r4,r4,r7;					\
+	ld	r7,PACA_DATA_OFFSET(r13); /* per cpu offset */	\
+	add	r4,r4,r7;					\
+								\
+	/* update stats	*/					\
+	ld	r7,HCALL_STAT_CALLS(r4); /* count */		\
+	addi	r7,r7,1;					\
+	std	r7,HCALL_STAT_CALLS(r4);			\
+	ld      r7,HCALL_STAT_TB(r4);	/* timebase */		\
+	add	r7,r7,r5;					\
+	std	r7,HCALL_STAT_TB(r4);				\
+BEGIN_FTR_SECTION;						\
+	ld	r7,HCALL_STAT_PURR(r4);	/* PURR */		\
+	add	r7,r7,r6;					\
+	std	r7,HCALL_STAT_PURR(r4);				\
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR);				\
+1:
+#else
+#define HCALL_INST_PRECALL
+#define HCALL_INST_POSTCALL
+#endif
 
+	.text
 
-/* Simple interface with no output values (other than status) */
 _GLOBAL(plpar_hcall_norets)
 	HMT_MEDIUM
 
 	mfcr	r0
 	stw	r0,8(r1)
 
-	HVSC				/* invoke the hypervisor */
-
-	lwz	r0,8(r1)
-	mtcrf	0xff,r0
-	blr				/* return r3 = status */
-
-
-/* long plpar_hcall_8arg_2ret(unsigned long opcode,	R3
-			unsigned long arg1,		R4
-			unsigned long arg2,		R5
-			unsigned long arg3,		R6
-			unsigned long arg4,		R7
-			unsigned long arg5,		R8
-			unsigned long arg6,		R9
-			unsigned long arg7,		R10
-			unsigned long arg8,		112(R1)
-			unsigned long *out1);		120(R1)
- */
-_GLOBAL(plpar_hcall_8arg_2ret)
-	HMT_MEDIUM
-
-	mfcr	r0
-	ld	r11,STK_PARM(r11)(r1)	/* put arg8 in R11 */
-	stw	r0,8(r1)
+	HCALL_INST_PRECALL
 
 	HVSC				/* invoke the hypervisor */
 
+	HCALL_INST_POSTCALL
+
 	lwz	r0,8(r1)
-	ld	r10,STK_PARM(r12)(r1)	/* Fetch r4 ret arg */
-	std	r4,0(r10)
 	mtcrf	0xff,r0
 	blr				/* return r3 = status */
 
-
-/* long plpar_hcall_4out(unsigned long opcode,		R3
-		 	unsigned long arg1,		R4
-		 	unsigned long arg2,		R5
-		 	unsigned long arg3,		R6
-		 	unsigned long arg4,		R7
-		 	unsigned long *out1,		R8
-		 	unsigned long *out2,		R9
-		 	unsigned long *out3,		R10
-		 	unsigned long *out4);		112(R1)
- */
-_GLOBAL(plpar_hcall_4out)
+_GLOBAL(plpar_hcall)
 	HMT_MEDIUM
 
 	mfcr	r0
 	stw	r0,8(r1)
 
-	std	r8,STK_PARM(r8)(r1)	/* Save out ptrs */
-	std	r9,STK_PARM(r9)(r1)
-	std	r10,STK_PARM(r10)(r1)
-
-	HVSC				/* invoke the hypervisor */
-
-	lwz	r0,8(r1)
+	HCALL_INST_PRECALL
 
-	ld	r8,STK_PARM(r8)(r1)	/* Fetch r4-r7 ret args */
-	ld	r9,STK_PARM(r9)(r1)
-	ld	r10,STK_PARM(r10)(r1)
-	ld	r11,STK_PARM(r11)(r1)
-	std	r4,0(r8)
-	std	r5,0(r9)
-	std	r6,0(r10)
-	std	r7,0(r11)
+	std     r4,STK_PARM(r4)(r1)     /* Save ret buffer */
 
-	mtcrf	0xff,r0
-	blr				/* return r3 = status */
-
-/* plpar_hcall_7arg_7ret(unsigned long opcode,		R3
-			 unsigned long arg1,		R4
-			 unsigned long arg2,		R5
-			 unsigned long arg3,		R6
-			 unsigned long arg4,		R7
-			 unsigned long arg5,		R8
-			 unsigned long arg6,		R9
-			 unsigned long arg7,		R10
-			 unsigned long *out1,		112(R1)
-			 unsigned long *out2,		110(R1)
-			 unsigned long *out3,		108(R1)
-			 unsigned long *out4,		106(R1)
-			 unsigned long *out5,		104(R1)
-			 unsigned long *out6,		102(R1)
-			 unsigned long *out7);		100(R1)
-*/
-_GLOBAL(plpar_hcall_7arg_7ret)
-	HMT_MEDIUM
-
-	mfcr	r0
-	stw	r0,8(r1)
+	mr	r4,r5
+	mr	r5,r6
+	mr	r6,r7
+	mr	r7,r8
+	mr	r8,r9
+	mr	r9,r10
 
 	HVSC				/* invoke the hypervisor */
 
-	lwz	r0,8(r1)
+	ld	r12,STK_PARM(r4)(r1)
+	std	r4,  0(r12)
+	std	r5,  8(r12)
+	std	r6, 16(r12)
+	std	r7, 24(r12)
 
-	ld	r11,STK_PARM(r11)(r1)	/* Fetch r4 ret arg */
-	std	r4,0(r11)
-	ld	r11,STK_PARM(r12)(r1)	/* Fetch r5 ret arg */
-	std	r5,0(r11)
-	ld	r11,STK_PARM(r13)(r1)	/* Fetch r6 ret arg */
-	std	r6,0(r11)
-	ld	r11,STK_PARM(r14)(r1)	/* Fetch r7 ret arg */
-	std	r7,0(r11)
-	ld	r11,STK_PARM(r15)(r1)	/* Fetch r8 ret arg */
-	std	r8,0(r11)
-	ld	r11,STK_PARM(r16)(r1)	/* Fetch r9 ret arg */
-	std	r9,0(r11)
-	ld	r11,STK_PARM(r17)(r1)	/* Fetch r10 ret arg */
-	std	r10,0(r11)
+	HCALL_INST_POSTCALL
 
+	lwz	r0,8(r1)
 	mtcrf	0xff,r0
 
 	blr				/* return r3 = status */
 
-/* plpar_hcall_9arg_9ret(unsigned long opcode,		R3
-			 unsigned long arg1,		R4
-			 unsigned long arg2,		R5
-			 unsigned long arg3,		R6
-			 unsigned long arg4,		R7
-			 unsigned long arg5,		R8
-			 unsigned long arg6,		R9
-			 unsigned long arg7,		R10
-			 unsigned long arg8,		112(R1)
-			 unsigned long arg9,		110(R1)
-			 unsigned long *out1,		108(R1)
-			 unsigned long *out2,		106(R1)
-			 unsigned long *out3,		104(R1)
-			 unsigned long *out4,		102(R1)
-			 unsigned long *out5,		100(R1)
-			 unsigned long *out6,		 98(R1)
-			 unsigned long *out7);		 96(R1)
-			 unsigned long *out8,		 94(R1)
-		         unsigned long *out9,            92(R1)
-*/
-_GLOBAL(plpar_hcall_9arg_9ret)
+_GLOBAL(plpar_hcall9)
 	HMT_MEDIUM
 
 	mfcr	r0
 	stw	r0,8(r1)
 
-	ld	r11,STK_PARM(r11)(r1)	 /* put arg8 in R11 */
-	ld	r12,STK_PARM(r12)(r1)    /* put arg9 in R12 */
+	HCALL_INST_PRECALL
+
+	std     r4,STK_PARM(r4)(r1)     /* Save ret buffer */
+
+	mr	r4,r5
+	mr	r5,r6
+	mr	r6,r7
+	mr	r7,r8
+	mr	r8,r9
+	mr	r9,r10
+	ld	r10,STK_PARM(r11)(r1)	 /* put arg7 in R10 */
+	ld	r11,STK_PARM(r12)(r1)	 /* put arg8 in R11 */
+	ld	r12,STK_PARM(r13)(r1)    /* put arg9 in R12 */
 
 	HVSC				/* invoke the hypervisor */
 
-	ld	r0,STK_PARM(r13)(r1)	/* Fetch r4 ret arg */
-	stdx	r4,r0,r0
-	ld	r0,STK_PARM(r14)(r1)	/* Fetch r5 ret arg */
-	stdx	r5,r0,r0
-	ld	r0,STK_PARM(r15)(r1)	/* Fetch r6 ret arg */
-	stdx	r6,r0,r0
-	ld	r0,STK_PARM(r16)(r1)	/* Fetch r7 ret arg */
-	stdx	r7,r0,r0
-	ld	r0,STK_PARM(r17)(r1)	/* Fetch r8 ret arg */
-	stdx	r8,r0,r0
-	ld	r0,STK_PARM(r18)(r1)	/* Fetch r9 ret arg */
-	stdx	r9,r0,r0
-	ld	r0,STK_PARM(r19)(r1)	/* Fetch r10 ret arg */
-	stdx	r10,r0,r0
-	ld	r0,STK_PARM(r20)(r1)	/* Fetch r11 ret arg */
-	stdx	r11,r0,r0
-	ld	r0,STK_PARM(r21)(r1)	/* Fetch r12 ret arg */
-	stdx	r12,r0,r0
+	ld	r12,STK_PARM(r4)(r1)
+	std	r4,  0(r12)
+	std	r5,  8(r12)
+	std	r6, 16(r12)
+	std	r7, 24(r12)
+	std	r8, 32(r12)
+	std	r9, 40(r12)
+	std	r10,48(r12)
+	std	r11,56(r12)
+	std	r12,64(r12)
+
+	HCALL_INST_POSTCALL
 
 	lwz	r0,8(r1)
 	mtcrf	0xff,r0
diff --git a/arch/powerpc/platforms/pseries/hvCall_inst.c b/arch/powerpc/platforms/pseries/hvCall_inst.c
new file mode 100644
index 00000000000..641e6511cf0
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/hvCall_inst.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2006 Mike Kravetz IBM Corporation
+ *
+ * Hypervisor Call Instrumentation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/percpu.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/cpumask.h>
+#include <asm/hvcall.h>
+#include <asm/firmware.h>
+#include <asm/cputable.h>
+
+DEFINE_PER_CPU(struct hcall_stats[HCALL_STAT_ARRAY_SIZE], hcall_stats);
+
+/*
+ * Routines for displaying the statistics in debugfs
+ */
+static void *hc_start(struct seq_file *m, loff_t *pos)
+{
+	if ((int)*pos < HCALL_STAT_ARRAY_SIZE)
+		return (void *)(unsigned long)(*pos + 1);
+
+	return NULL;
+}
+
+static void *hc_next(struct seq_file *m, void *p, loff_t * pos)
+{
+	++*pos;
+
+	return hc_start(m, pos);
+}
+
+static void hc_stop(struct seq_file *m, void *p)
+{
+}
+
+static int hc_show(struct seq_file *m, void *p)
+{
+	unsigned long h_num = (unsigned long)p;
+	struct hcall_stats *hs = (struct hcall_stats *)m->private;
+
+	if (hs[h_num].num_calls) {
+		if (!cpu_has_feature(CPU_FTR_PURR))
+			seq_printf(m, "%lu %lu %lu %lu\n", h_num<<2,
+				   hs[h_num].num_calls,
+				   hs[h_num].tb_total,
+				   hs[h_num].purr_total);
+		else
+			seq_printf(m, "%lu %lu %lu\n", h_num<<2,
+				   hs[h_num].num_calls,
+				   hs[h_num].tb_total);
+	}
+
+	return 0;
+}
+
+static struct seq_operations hcall_inst_seq_ops = {
+        .start = hc_start,
+        .next  = hc_next,
+        .stop  = hc_stop,
+        .show  = hc_show
+};
+
+static int hcall_inst_seq_open(struct inode *inode, struct file *file)
+{
+	int rc;
+	struct seq_file *seq;
+
+	rc = seq_open(file, &hcall_inst_seq_ops);
+	seq = file->private_data;
+	seq->private = file->f_dentry->d_inode->u.generic_ip;
+
+	return rc;
+}
+
+static struct file_operations hcall_inst_seq_fops = {
+	.open = hcall_inst_seq_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = seq_release,
+};
+
+#define	HCALL_ROOT_DIR		"hcall_inst"
+#define CPU_NAME_BUF_SIZE	32
+
+static int __init hcall_inst_init(void)
+{
+	struct dentry *hcall_root;
+	struct dentry *hcall_file;
+	char cpu_name_buf[CPU_NAME_BUF_SIZE];
+	int cpu;
+
+	if (!firmware_has_feature(FW_FEATURE_LPAR))
+		return 0;
+
+	hcall_root = debugfs_create_dir(HCALL_ROOT_DIR, NULL);
+	if (!hcall_root)
+		return -ENOMEM;
+
+	for_each_possible_cpu(cpu) {
+		snprintf(cpu_name_buf, CPU_NAME_BUF_SIZE, "cpu%d", cpu);
+		hcall_file = debugfs_create_file(cpu_name_buf, S_IRUGO,
+						 hcall_root,
+						 per_cpu(hcall_stats, cpu),
+						 &hcall_inst_seq_fops);
+		if (!hcall_file)
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+__initcall(hcall_inst_init);
diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c
index a72a987f1d4..3f6a89b0981 100644
--- a/arch/powerpc/platforms/pseries/hvconsole.c
+++ b/arch/powerpc/platforms/pseries/hvconsole.c
@@ -27,6 +27,7 @@
 #include <linux/module.h>
 #include <asm/hvcall.h>
 #include <asm/hvconsole.h>
+#include "plpar_wrappers.h"
 
 /**
  * hvc_get_chars - retrieve characters from firmware for denoted vterm adatper
@@ -40,9 +41,9 @@ int hvc_get_chars(uint32_t vtermno, char *buf, int count)
 {
 	unsigned long got;
 
-	if (plpar_hcall(H_GET_TERM_CHAR, vtermno, 0, 0, 0, &got,
-		(unsigned long *)buf, (unsigned long *)buf+1) == H_SUCCESS)
+	if (plpar_get_term_char(vtermno, &got, buf) == H_SUCCESS)
 		return got;
+
 	return 0;
 }
 
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index d67af2c6575..bbf2e34dc35 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -267,13 +267,12 @@ static void iommu_table_setparms(struct pci_controller *phb,
 				 struct iommu_table *tbl)
 {
 	struct device_node *node;
-	unsigned long *basep;
-	unsigned int *sizep;
+	const unsigned long *basep, *sizep;
 
 	node = (struct device_node *)phb->arch_data;
 
-	basep = (unsigned long *)get_property(node, "linux,tce-base", NULL);
-	sizep = (unsigned int *)get_property(node, "linux,tce-size", NULL);
+	basep = get_property(node, "linux,tce-base", NULL);
+	sizep = get_property(node, "linux,tce-size", NULL);
 	if (basep == NULL || sizep == NULL) {
 		printk(KERN_ERR "PCI_DMA: iommu_table_setparms: %s has "
 				"missing tce entries !\n", dn->full_name);
@@ -315,7 +314,7 @@ static void iommu_table_setparms(struct pci_controller *phb,
 static void iommu_table_setparms_lpar(struct pci_controller *phb,
 				      struct device_node *dn,
 				      struct iommu_table *tbl,
-				      unsigned char *dma_window)
+				      const void *dma_window)
 {
 	unsigned long offset, size;
 
@@ -415,7 +414,7 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
 	struct iommu_table *tbl;
 	struct device_node *dn, *pdn;
 	struct pci_dn *ppci;
-	unsigned char *dma_window = NULL;
+	const void *dma_window = NULL;
 
 	DBG("iommu_bus_setup_pSeriesLP, bus %p, bus->self %p\n", bus, bus->self);
 
@@ -519,7 +518,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
 {
 	struct device_node *pdn, *dn;
 	struct iommu_table *tbl;
-	unsigned char *dma_window = NULL;
+	const void *dma_window = NULL;
 	struct pci_dn *pci;
 
 	DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, pci_name(dev));
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 3aeb4069904..1820a0b0a8c 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -48,13 +48,11 @@
 #define DBG_LOW(fmt...) do { } while(0)
 #endif
 
-/* in pSeries_hvCall.S */
+/* in hvCall.S */
 EXPORT_SYMBOL(plpar_hcall);
-EXPORT_SYMBOL(plpar_hcall_4out);
+EXPORT_SYMBOL(plpar_hcall9);
 EXPORT_SYMBOL(plpar_hcall_norets);
-EXPORT_SYMBOL(plpar_hcall_8arg_2ret);
-EXPORT_SYMBOL(plpar_hcall_7arg_7ret);
-EXPORT_SYMBOL(plpar_hcall_9arg_9ret);
+
 extern void pSeries_find_serial_port(void);
 
 
@@ -204,20 +202,20 @@ void __init udbg_init_debug_lpar(void)
 void __init find_udbg_vterm(void)
 {
 	struct device_node *stdout_node;
-	u32 *termno;
-	char *name;
+	const u32 *termno;
+	const char *name;
 	int add_console;
 
 	/* find the boot console from /chosen/stdout */
 	if (!of_chosen)
 		return;
-	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+	name = get_property(of_chosen, "linux,stdout-path", NULL);
 	if (name == NULL)
 		return;
 	stdout_node = of_find_node_by_path(name);
 	if (!stdout_node)
 		return;
-	name = (char *)get_property(stdout_node, "name", NULL);
+	name = get_property(stdout_node, "name", NULL);
 	if (!name) {
 		printk(KERN_WARNING "stdout node missing 'name' property!\n");
 		goto out;
@@ -228,7 +226,7 @@ void __init find_udbg_vterm(void)
 	/* Check if it's a virtual terminal */
 	if (strncmp(name, "vty", 3) != 0)
 		goto out;
-	termno = (u32 *)get_property(stdout_node, "reg", NULL);
+	termno = get_property(stdout_node, "reg", NULL);
 	if (termno == NULL)
 		goto out;
 	vtermno = termno[0];
@@ -254,18 +252,34 @@ out:
 void vpa_init(int cpu)
 {
 	int hwcpu = get_hard_smp_processor_id(cpu);
-	unsigned long vpa = __pa(&lppaca[cpu]);
+	unsigned long addr;
 	long ret;
 
 	if (cpu_has_feature(CPU_FTR_ALTIVEC))
 		lppaca[cpu].vmxregs_in_use = 1;
 
-	ret = register_vpa(hwcpu, vpa);
+	addr = __pa(&lppaca[cpu]);
+	ret = register_vpa(hwcpu, addr);
 
-	if (ret)
+	if (ret) {
 		printk(KERN_ERR "WARNING: vpa_init: VPA registration for "
 				"cpu %d (hw %d) of area %lx returns %ld\n",
-				cpu, hwcpu, vpa, ret);
+				cpu, hwcpu, addr, ret);
+		return;
+	}
+	/*
+	 * PAPR says this feature is SLB-Buffer but firmware never
+	 * reports that.  All SPLPAR support SLB shadow buffer.
+	 */
+	addr = __pa(&slb_shadow[cpu]);
+	if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
+		ret = register_slb_shadow(hwcpu, addr);
+		if (ret)
+			printk(KERN_ERR
+			       "WARNING: vpa_init: SLB shadow buffer "
+			       "registration for cpu %d (hw %d) of area %lx "
+			       "returns %ld\n", cpu, hwcpu, addr, ret);
+	}
 }
 
 long pSeries_lpar_hpte_insert(unsigned long hpte_group,
@@ -277,7 +291,6 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
 	unsigned long flags;
 	unsigned long slot;
 	unsigned long hpte_v, hpte_r;
-	unsigned long dummy0, dummy1;
 
 	if (!(vflags & HPTE_V_BOLTED))
 		DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, "
@@ -302,8 +315,7 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
 	if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE))
 		hpte_r &= ~_PAGE_COHERENT;
 
-	lpar_rc = plpar_hcall(H_ENTER, flags, hpte_group, hpte_v,
-			      hpte_r, &slot, &dummy0, &dummy1);
+	lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot);
 	if (unlikely(lpar_rc == H_PTEG_FULL)) {
 		if (!(vflags & HPTE_V_BOLTED))
 			DBG_LOW(" full\n");
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 18abfb1f4e2..64163cecdf9 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -123,13 +123,14 @@ static ssize_t pSeries_nvram_get_size(void)
 int __init pSeries_nvram_init(void)
 {
 	struct device_node *nvram;
-	unsigned int *nbytes_p, proplen;
+	const unsigned int *nbytes_p;
+	unsigned int proplen;
 
 	nvram = of_find_node_by_type(NULL, "nvram");
 	if (nvram == NULL)
 		return -ENODEV;
 
-	nbytes_p = (unsigned int *)get_property(nvram, "#bytes", &proplen);
+	nbytes_p = get_property(nvram, "#bytes", &proplen);
 	if (nbytes_p == NULL || proplen != sizeof(unsigned int))
 		return -EIO;
 
diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c
index e97e67f5e07..410a6bcc4ca 100644
--- a/arch/powerpc/platforms/pseries/pci.c
+++ b/arch/powerpc/platforms/pseries/pci.c
@@ -60,7 +60,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device);
 static void __devinit check_s7a(void)
 {
 	struct device_node *root;
-	char *model;
+	const char *model;
 
 	s7a_workaround = 0;
 	root = of_find_node_by_path("/");
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index 3bd1b3e0600..3eb7b294d92 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -5,20 +5,17 @@
 
 static inline long poll_pending(void)
 {
-	unsigned long dummy;
-	return plpar_hcall(H_POLL_PENDING, 0, 0, 0, 0, &dummy, &dummy, &dummy);
+	return plpar_hcall_norets(H_POLL_PENDING);
 }
 
 static inline long prod_processor(void)
 {
-	plpar_hcall_norets(H_PROD);
-	return 0;
+	return plpar_hcall_norets(H_PROD);
 }
 
 static inline long cede_processor(void)
 {
-	plpar_hcall_norets(H_CEDE);
-	return 0;
+	return plpar_hcall_norets(H_CEDE);
 }
 
 static inline long vpa_call(unsigned long flags, unsigned long cpu,
@@ -40,23 +37,59 @@ static inline long register_vpa(unsigned long cpu, unsigned long vpa)
 	return vpa_call(0x1, cpu, vpa);
 }
 
+static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
+{
+	return vpa_call(0x7, cpu, vpa);
+}
+
+static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
+{
+	return vpa_call(0x3, cpu, vpa);
+}
+
 extern void vpa_init(int cpu);
 
+static inline long plpar_pte_enter(unsigned long flags,
+		unsigned long hpte_group, unsigned long hpte_v,
+		unsigned long hpte_r, unsigned long *slot)
+{
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
+
+	*slot = retbuf[0];
+
+	return rc;
+}
+
 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
 		unsigned long avpn, unsigned long *old_pteh_ret,
 		unsigned long *old_ptel_ret)
 {
-	unsigned long dummy;
-	return plpar_hcall(H_REMOVE, flags, ptex, avpn, 0, old_pteh_ret,
-			old_ptel_ret, &dummy);
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
+
+	*old_pteh_ret = retbuf[0];
+	*old_ptel_ret = retbuf[1];
+
+	return rc;
 }
 
 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
 		unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
 {
-	unsigned long dummy;
-	return plpar_hcall(H_READ, flags, ptex, 0, 0, old_pteh_ret,
-			old_ptel_ret, &dummy);
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_READ, retbuf, flags, ptex);
+
+	*old_pteh_ret = retbuf[0];
+	*old_ptel_ret = retbuf[1];
+
+	return rc;
 }
 
 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
@@ -68,9 +101,14 @@ static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
 		unsigned long *tce_ret)
 {
-	unsigned long dummy;
-	return plpar_hcall(H_GET_TCE, liobn, ioba, 0, 0, tce_ret, &dummy,
-			&dummy);
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
+
+	*tce_ret = retbuf[0];
+
+	return rc;
 }
 
 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
@@ -94,9 +132,17 @@ static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 static inline long plpar_get_term_char(unsigned long termno,
 		unsigned long *len_ret, char *buf_ret)
 {
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 	unsigned long *lbuf = (unsigned long *)buf_ret;	/* TODO: alignment? */
-	return plpar_hcall(H_GET_TERM_CHAR, termno, 0, 0, 0, len_ret,
-			lbuf + 0, lbuf + 1);
+
+	rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
+
+	*len_ret = retbuf[0];
+	lbuf[0] = retbuf[1];
+	lbuf[1] = retbuf[2];
+
+	return rc;
 }
 
 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
@@ -107,4 +153,31 @@ static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 			lbuf[1]);
 }
 
+static inline long plpar_eoi(unsigned long xirr)
+{
+	return plpar_hcall_norets(H_EOI, xirr);
+}
+
+static inline long plpar_cppr(unsigned long cppr)
+{
+	return plpar_hcall_norets(H_CPPR, cppr);
+}
+
+static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
+{
+	return plpar_hcall_norets(H_IPI, servernum, mfrr);
+}
+
+static inline long plpar_xirr(unsigned long *xirr_ret)
+{
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+	rc = plpar_hcall(H_XIRR, retbuf);
+
+	*xirr_ret = retbuf[0];
+
+	return rc;
+}
+
 #endif /* _PSERIES_PLPAR_WRAPPERS_H */
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index c7ffde1a614..903115d67fd 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -79,7 +79,7 @@ static void request_ras_irqs(struct device_node *np,
 {
 	int i, index, count = 0;
 	struct of_irq oirq;
-	u32 *opicprop;
+	const u32 *opicprop;
 	unsigned int opicplen;
 	unsigned int virqs[16];
 
@@ -87,7 +87,7 @@ static void request_ras_irqs(struct device_node *np,
 	 * map those interrupts using the default interrupt host and default
 	 * trigger
 	 */
-	opicprop = (u32 *)get_property(np, "open-pic-interrupt", &opicplen);
+	opicprop = get_property(np, "open-pic-interrupt", &opicplen);
 	if (opicprop) {
 		opicplen /= sizeof(u32);
 		for (i = 0; i < opicplen; i++) {
diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c
index 2e4e04042d8..8ca2612221d 100644
--- a/arch/powerpc/platforms/pseries/rtasd.c
+++ b/arch/powerpc/platforms/pseries/rtasd.c
@@ -359,11 +359,11 @@ static int enable_surveillance(int timeout)
 static int get_eventscan_parms(void)
 {
 	struct device_node *node;
-	int *ip;
+	const int *ip;
 
 	node = of_find_node_by_path("/rtas");
 
-	ip = (int *)get_property(node, "rtas-event-scan-rate", NULL);
+	ip = get_property(node, "rtas-event-scan-rate", NULL);
 	if (ip == NULL) {
 		printk(KERN_ERR "rtasd: no rtas-event-scan-rate\n");
 		of_node_put(node);
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 31867a701fc..a6398fbe530 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -133,9 +133,9 @@ void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc,
 static void __init pseries_mpic_init_IRQ(void)
 {
 	struct device_node *np, *old, *cascade = NULL;
-        unsigned int *addrp;
+        const unsigned int *addrp;
 	unsigned long intack = 0;
-	unsigned int *opprop;
+	const unsigned int *opprop;
 	unsigned long openpic_addr = 0;
 	unsigned int cascade_irq;
 	int naddr, n, i, opplen;
@@ -143,7 +143,7 @@ static void __init pseries_mpic_init_IRQ(void)
 
 	np = of_find_node_by_path("/");
 	naddr = prom_n_addr_cells(np);
-	opprop = (unsigned int *) get_property(np, "platform-open-pic", &opplen);
+	opprop = get_property(np, "platform-open-pic", &opplen);
 	if (opprop != 0) {
 		openpic_addr = of_read_number(opprop, naddr);
 		printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
@@ -192,7 +192,7 @@ static void __init pseries_mpic_init_IRQ(void)
 			break;
 		if (strcmp(np->name, "pci") != 0)
 			continue;
-		addrp = (u32 *)get_property(np, "8259-interrupt-acknowledge",
+		addrp = get_property(np, "8259-interrupt-acknowledge",
 					    NULL);
 		if (addrp == NULL)
 			continue;
@@ -223,23 +223,37 @@ static void pseries_lpar_enable_pmcs(void)
 }
 
 #ifdef CONFIG_KEXEC
-static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary)
-{
-	mpic_teardown_this_cpu(secondary);
-}
-
-static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
+static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
 {
 	/* Don't risk a hypervisor call if we're crashing */
 	if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
-		unsigned long vpa = __pa(get_lppaca());
+		unsigned long addr;
 
-		if (unregister_vpa(hard_smp_processor_id(), vpa)) {
+		addr = __pa(get_slb_shadow());
+		if (unregister_slb_shadow(hard_smp_processor_id(), addr))
+			printk("SLB shadow buffer deregistration of "
+			       "cpu %u (hw_cpu_id %d) failed\n",
+			       smp_processor_id(),
+			       hard_smp_processor_id());
+
+		addr = __pa(get_lppaca());
+		if (unregister_vpa(hard_smp_processor_id(), addr)) {
 			printk("VPA deregistration of cpu %u (hw_cpu_id %d) "
 					"failed\n", smp_processor_id(),
 					hard_smp_processor_id());
 		}
 	}
+}
+
+static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary)
+{
+	pseries_kexec_cpu_down(crash_shutdown, secondary);
+	mpic_teardown_this_cpu(secondary);
+}
+
+static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
+{
+	pseries_kexec_cpu_down(crash_shutdown, secondary);
 	xics_teardown_cpu(secondary);
 }
 #endif /* CONFIG_KEXEC */
@@ -247,11 +261,11 @@ static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
 static void __init pseries_discover_pic(void)
 {
 	struct device_node *np;
-	char *typep;
+	const char *typep;
 
 	for (np = NULL; (np = of_find_node_by_name(np,
 						   "interrupt-controller"));) {
-		typep = (char *)get_property(np, "compatible", NULL);
+		typep = get_property(np, "compatible", NULL);
 		if (strstr(typep, "open-pic")) {
 			pSeries_mpic_node = of_node_get(np);
 			ppc_md.init_IRQ       = pseries_mpic_init_IRQ;
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index ac61098ff40..c6624b8a0e7 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -62,7 +62,7 @@
  */
 static cpumask_t of_spin_map;
 
-extern void pSeries_secondary_smp_init(unsigned long);
+extern void generic_secondary_smp_init(unsigned long);
 
 #ifdef CONFIG_HOTPLUG_CPU
 
@@ -145,9 +145,9 @@ static int pSeries_add_processor(struct device_node *np)
 	unsigned int cpu;
 	cpumask_t candidate_map, tmp = CPU_MASK_NONE;
 	int err = -ENOSPC, len, nthreads, i;
-	u32 *intserv;
+	const u32 *intserv;
 
-	intserv = (u32 *)get_property(np, "ibm,ppc-interrupt-server#s", &len);
+	intserv = get_property(np, "ibm,ppc-interrupt-server#s", &len);
 	if (!intserv)
 		return 0;
 
@@ -205,9 +205,9 @@ static void pSeries_remove_processor(struct device_node *np)
 {
 	unsigned int cpu;
 	int len, nthreads, i;
-	u32 *intserv;
+	const u32 *intserv;
 
-	intserv = (u32 *)get_property(np, "ibm,ppc-interrupt-server#s", &len);
+	intserv = get_property(np, "ibm,ppc-interrupt-server#s", &len);
 	if (!intserv)
 		return;
 
@@ -270,7 +270,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 {
 	int status;
 	unsigned long start_here = __pa((u32)*((unsigned long *)
-					       pSeries_secondary_smp_init));
+					       generic_secondary_smp_init));
 	unsigned int pcpu;
 	int start_cpu;
 
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index e9886302572..253972e5479 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -34,6 +34,7 @@
 #include <asm/i8259.h>
 
 #include "xics.h"
+#include "plpar_wrappers.h"
 
 #define XICS_IPI		2
 #define XICS_IRQ_SPURIOUS	0
@@ -110,27 +111,6 @@ static inline void direct_qirr_info(int n_cpu, u8 value)
 /* LPAR low level accessors */
 
 
-static inline long plpar_eoi(unsigned long xirr)
-{
-	return plpar_hcall_norets(H_EOI, xirr);
-}
-
-static inline long plpar_cppr(unsigned long cppr)
-{
-	return plpar_hcall_norets(H_CPPR, cppr);
-}
-
-static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
-{
-	return plpar_hcall_norets(H_IPI, servernum, mfrr);
-}
-
-static inline long plpar_xirr(unsigned long *xirr_ret)
-{
-	unsigned long dummy;
-	return plpar_hcall(H_XIRR, 0, 0, 0, 0, xirr_ret, &dummy, &dummy);
-}
-
 static inline unsigned int lpar_xirr_info_get(int n_cpu)
 {
 	unsigned long lpar_rc;
@@ -590,14 +570,14 @@ static void __init xics_init_one_node(struct device_node *np,
 				      unsigned int *indx)
 {
 	unsigned int ilen;
-	u32 *ireg;
+	const u32 *ireg;
 
 	/* This code does the theorically broken assumption that the interrupt
 	 * server numbers are the same as the hard CPU numbers.
 	 * This happens to be the case so far but we are playing with fire...
 	 * should be fixed one of these days. -BenH.
 	 */
-	ireg = (u32 *)get_property(np, "ibm,interrupt-server-ranges", NULL);
+	ireg = get_property(np, "ibm,interrupt-server-ranges", NULL);
 
 	/* Do that ever happen ? we'll know soon enough... but even good'old
 	 * f80 does have that property ..
@@ -609,7 +589,7 @@ static void __init xics_init_one_node(struct device_node *np,
 		 */
 		*indx = *ireg;
 	}
-	ireg = (u32 *)get_property(np, "reg", &ilen);
+	ireg = get_property(np, "reg", &ilen);
 	if (!ireg)
 		panic("xics_init_IRQ: can't find interrupt reg property");
 
@@ -635,7 +615,7 @@ static void __init xics_setup_8259_cascade(void)
 {
 	struct device_node *np, *old, *found = NULL;
 	int cascade, naddr;
-	u32 *addrp;
+	const u32 *addrp;
 	unsigned long intack = 0;
 
 	for_each_node_by_type(np, "interrupt-controller")
@@ -661,7 +641,7 @@ static void __init xics_setup_8259_cascade(void)
 			break;
 		if (strcmp(np->name, "pci") != 0)
 			continue;
-		addrp = (u32 *)get_property(np, "8259-interrupt-acknowledge", NULL);
+		addrp = get_property(np, "8259-interrupt-acknowledge", NULL);
 		if (addrp == NULL)
 			continue;
 		naddr = prom_n_addr_cells(np);
@@ -680,7 +660,8 @@ void __init xics_init_IRQ(void)
 {
 	int i;
 	struct device_node *np;
-	u32 *ireg, ilen, indx = 0;
+	u32 ilen, indx = 0;
+	const u32 *ireg;
 	int found = 0;
 
 	ppc64_boot_msg(0x20, "XICS Init");
@@ -705,18 +686,17 @@ void __init xics_init_IRQ(void)
 	for (np = of_find_node_by_type(NULL, "cpu");
 	     np;
 	     np = of_find_node_by_type(np, "cpu")) {
-		ireg = (u32 *)get_property(np, "reg", &ilen);
+		ireg = get_property(np, "reg", &ilen);
 		if (ireg && ireg[0] == get_hard_smp_processor_id(boot_cpuid)) {
-			ireg = (u32 *)get_property(np,
-						  "ibm,ppc-interrupt-gserver#s",
-						   &ilen);
+			ireg = get_property(np,
+					"ibm,ppc-interrupt-gserver#s", &ilen);
 			i = ilen / sizeof(int);
 			if (ireg && i > 0) {
 				default_server = ireg[0];
 				/* take last element */
 				default_distrib_server = ireg[i-1];
 			}
-			ireg = (u32 *)get_property(np,
+			ireg = get_property(np,
 					"ibm,interrupt-server#-size", NULL);
 			if (ireg)
 				interrupt_server_size = *ireg;
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index ef10bcf2d94..92ba378b799 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -41,7 +41,7 @@ phys_addr_t get_immrbase(void)
 	soc = of_find_node_by_type(NULL, "soc");
 	if (soc) {
 		unsigned int size;
-		void *prop = get_property(soc, "reg", &size);
+		const void *prop = get_property(soc, "reg", &size);
 		immrbase = of_translate_address(soc, prop);
 		of_node_put(soc);
 	};
@@ -85,7 +85,7 @@ static int __init gfar_mdio_of_init(void)
 			mdio_data.irq[k] = -1;
 
 		while ((child = of_get_next_child(np, child)) != NULL) {
-			u32 *id = get_property(child, "reg", NULL);
+			const u32 *id = get_property(child, "reg", NULL);
 			mdio_data.irq[*id] = irq_of_parse_and_map(child, 0);
 		}
 
@@ -124,10 +124,10 @@ static int __init gfar_of_init(void)
 		struct resource r[4];
 		struct device_node *phy, *mdio;
 		struct gianfar_platform_data gfar_data;
-		unsigned int *id;
-		char *model;
-		void *mac_addr;
-		phandle *ph;
+		const unsigned int *id;
+		const char *model;
+		const void *mac_addr;
+		const phandle *ph;
 		int n_res = 1;
 
 		memset(r, 0, sizeof(r));
@@ -193,7 +193,7 @@ static int __init gfar_of_init(void)
 			    FSL_GIANFAR_DEV_HAS_VLAN |
 			    FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 
-		ph = (phandle *) get_property(np, "phy-handle", NULL);
+		ph = get_property(np, "phy-handle", NULL);
 		phy = of_find_node_by_phandle(*ph);
 
 		if (phy == NULL) {
@@ -203,7 +203,7 @@ static int __init gfar_of_init(void)
 
 		mdio = of_get_parent(phy);
 
-		id = (u32 *) get_property(phy, "reg", NULL);
+		id = get_property(phy, "reg", NULL);
 		ret = of_address_to_resource(mdio, 0, &res);
 		if (ret) {
 			of_node_put(phy);
@@ -247,7 +247,7 @@ static int __init fsl_i2c_of_init(void)
 	     i++) {
 		struct resource r[2];
 		struct fsl_i2c_platform_data i2c_data;
-		unsigned char *flags = NULL;
+		const unsigned char *flags = NULL;
 
 		memset(&r, 0, sizeof(r));
 		memset(&i2c_data, 0, sizeof(i2c_data));
@@ -298,7 +298,7 @@ static int __init mpc83xx_wdt_init(void)
 	struct resource r;
 	struct device_node *soc, *np;
 	struct platform_device *dev;
-	unsigned int *freq;
+	const unsigned int *freq;
 	int ret;
 
 	np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
@@ -315,7 +315,7 @@ static int __init mpc83xx_wdt_init(void)
 		goto nosoc;
 	}
 
-	freq = (unsigned int *)get_property(soc, "bus-frequency", NULL);
+	freq = get_property(soc, "bus-frequency", NULL);
 	if (!freq) {
 		ret = -ENODEV;
 		goto err;
@@ -355,7 +355,7 @@ nodev:
 arch_initcall(mpc83xx_wdt_init);
 #endif
 
-static enum fsl_usb2_phy_modes determine_usb_phy(char * phy_type)
+static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 {
 	if (!phy_type)
 		return FSL_USB2_PHY_NONE;
@@ -383,7 +383,7 @@ static int __init fsl_usb_of_init(void)
 	     i++) {
 		struct resource r[2];
 		struct fsl_usb2_platform_data usb_data;
-		unsigned char *prop = NULL;
+		const unsigned char *prop = NULL;
 
 		memset(&r, 0, sizeof(r));
 		memset(&usb_data, 0, sizeof(usb_data));
@@ -431,7 +431,7 @@ static int __init fsl_usb_of_init(void)
 	     i++) {
 		struct resource r[2];
 		struct fsl_usb2_platform_data usb_data;
-		unsigned char *prop = NULL;
+		const unsigned char *prop = NULL;
 
 		memset(&r, 0, sizeof(r));
 		memset(&usb_data, 0, sizeof(usb_data));
diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/fsl_soc.h
index c433d3f39ed..5a3dd480d2f 100644
--- a/arch/powerpc/sysdev/fsl_soc.h
+++ b/arch/powerpc/sysdev/fsl_soc.h
@@ -2,6 +2,8 @@
 #define __PPC_FSL_SOC_H
 #ifdef __KERNEL__
 
+#include <asm/mmu.h>
+
 extern phys_addr_t get_immrbase(void);
 
 #endif
diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index 9855820b954..26a6a3becd6 100644
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -224,7 +224,7 @@ static struct irq_host_ops i8259_host_ops = {
 	.xlate = i8259_host_xlate,
 };
 
-/****
+/**
  * i8259_init - Initialize the legacy controller
  * @node: device node of the legacy PIC (can be NULL, but then, it will match
  *        all interrupts, so beware)
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 70e707785d4..0251b7c68d0 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -210,7 +210,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 4,
 	},
 	[64] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_A,
 		.force	= IPIC_SIFCR_L,
@@ -218,7 +218,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 0,
 	},
 	[65] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_A,
 		.force	= IPIC_SIFCR_L,
@@ -226,7 +226,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 1,
 	},
 	[66] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_A,
 		.force	= IPIC_SIFCR_L,
@@ -234,7 +234,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 2,
 	},
 	[67] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_A,
 		.force	= IPIC_SIFCR_L,
@@ -242,7 +242,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 3,
 	},
 	[68] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_B,
 		.force	= IPIC_SIFCR_L,
@@ -250,7 +250,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 0,
 	},
 	[69] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_B,
 		.force	= IPIC_SIFCR_L,
@@ -258,7 +258,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 1,
 	},
 	[70] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_B,
 		.force	= IPIC_SIFCR_L,
@@ -266,7 +266,7 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 2,
 	},
 	[71] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= IPIC_SMPRR_B,
 		.force	= IPIC_SIFCR_L,
@@ -274,91 +274,91 @@ static struct ipic_info ipic_info[] = {
 		.prio_mask = 3,
 	},
 	[72] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 8,
 	},
 	[73] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 9,
 	},
 	[74] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 10,
 	},
 	[75] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 11,
 	},
 	[76] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 12,
 	},
 	[77] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 13,
 	},
 	[78] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 14,
 	},
 	[79] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 15,
 	},
 	[80] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 16,
 	},
 	[84] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 20,
 	},
 	[85] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 21,
 	},
 	[90] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
 		.bit	= 26,
 	},
 	[91] = {
-		.pend	= IPIC_SIPNR_H,
+		.pend	= IPIC_SIPNR_L,
 		.mask	= IPIC_SIMSR_L,
 		.prio	= 0,
 		.force	= IPIC_SIFCR_L,
diff --git a/arch/powerpc/sysdev/mmio_nvram.c b/arch/powerpc/sysdev/mmio_nvram.c
index 615350d46b5..ff23f5a4d4b 100644
--- a/arch/powerpc/sysdev/mmio_nvram.c
+++ b/arch/powerpc/sysdev/mmio_nvram.c
@@ -80,7 +80,7 @@ static ssize_t mmio_nvram_get_size(void)
 int __init mmio_nvram_init(void)
 {
 	struct device_node *nvram_node;
-	unsigned long *buffer;
+	const unsigned long *buffer;
 	int proplen;
 	unsigned long nvram_addr;
 	int ret;
@@ -91,7 +91,7 @@ int __init mmio_nvram_init(void)
 		goto out;
 
 	ret = -EIO;
-	buffer = (unsigned long *)get_property(nvram_node, "reg", &proplen);
+	buffer = get_property(nvram_node, "reg", &proplen);
 	if (proplen != 2*sizeof(unsigned long))
 		goto out;
 
diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c
index 2ab06ed3ae7..c28f69bef8e 100644
--- a/arch/powerpc/sysdev/tsi108_pci.c
+++ b/arch/powerpc/sysdev/tsi108_pci.c
@@ -194,7 +194,7 @@ int __init tsi108_setup_pci(struct device_node *dev)
 	int len;
 	struct pci_controller *hose;
 	struct resource rsrc;
-	int *bus_range;
+	const int *bus_range;
 	int primary = 0, has_address = 0;
 
 	/* PCI Config mapping */
@@ -207,7 +207,7 @@ int __init tsi108_setup_pci(struct device_node *dev)
 	has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
 
 	/* Get bus range if any */
-	bus_range = (int *)get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, assume"
 		       " bus 0\n", dev->full_name);
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 179b10ced8c..8adad1444a5 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -137,10 +137,14 @@ static void bootcmds(void);
 static void proccall(void);
 void dump_segments(void);
 static void symbol_lookup(void);
+static void xmon_show_stack(unsigned long sp, unsigned long lr,
+			    unsigned long pc);
 static void xmon_print_symbol(unsigned long address, const char *mid,
 			      const char *after);
 static const char *getvecname(unsigned long vec);
 
+int xmon_no_auto_backtrace;
+
 extern int print_insn_powerpc(unsigned long, unsigned long, int);
 
 extern void xmon_enter(void);
@@ -736,6 +740,12 @@ cmds(struct pt_regs *excp)
 
 	last_cmd = NULL;
 	xmon_regs = excp;
+
+	if (!xmon_no_auto_backtrace) {
+		xmon_no_auto_backtrace = 1;
+		xmon_show_stack(excp->gpr[1], excp->link, excp->nip);
+	}
+
 	for(;;) {
 #ifdef CONFIG_SMP
 		printf("%x:", smp_processor_id());
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index a04cdf01596..8fa10cf661a 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -1204,7 +1204,7 @@ config PCI_DOMAINS
 	default PCI
 
 config MPC83xx_PCI2
-	bool "  Supprt for 2nd PCI host controller"
+	bool "Support for 2nd PCI host controller"
 	depends on PCI && MPC834x
 	default y if MPC834x_SYS
 
@@ -1223,12 +1223,12 @@ config PCI_8260
 	default y
 
 config 8260_PCI9
-	bool "  Enable workaround for MPC826x erratum PCI 9"
+	bool "Enable workaround for MPC826x erratum PCI 9"
 	depends on PCI_8260 && !ADS8272
 	default y
 
 choice
-	prompt "  IDMA channel for PCI 9 workaround"
+	prompt "IDMA channel for PCI 9 workaround"
 	depends on 8260_PCI9
 
 config 8260_PCI9_IDMA1
diff --git a/arch/ppc/kernel/misc.S b/arch/ppc/kernel/misc.S
index 2fa0075f2b5..50b4bbd0680 100644
--- a/arch/ppc/kernel/misc.S
+++ b/arch/ppc/kernel/misc.S
@@ -768,91 +768,6 @@ _GLOBAL(_outsb)
 	bdnz	00b
 	blr
 
-_GLOBAL(_insw)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhbrx	r5,0,r3
-01:	eieio
-02:	sthu	r5,2(r4)
-	ISYNC_8xx
-	.section .fixup,"ax"
-03:	blr
-	.text
-	.section __ex_table, "a"
-		.align 2
-		.long 00b, 03b
-		.long 01b, 03b
-		.long 02b, 03b
-	.text
-	bdnz	00b
-	blr
-
-_GLOBAL(_outsw)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhzu	r5,2(r4)
-01:	eieio
-02:	sthbrx	r5,0,r3
-	ISYNC_8xx
-	.section .fixup,"ax"
-03:	blr
-	.text
-	.section __ex_table, "a"
-		.align 2
-		.long 00b, 03b
-		.long 01b, 03b
-		.long 02b, 03b
-	.text
-	bdnz	00b
-	blr
-
-_GLOBAL(_insl)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwbrx	r5,0,r3
-01:	eieio
-02:	stwu	r5,4(r4)
-	ISYNC_8xx
-	.section .fixup,"ax"
-03:	blr
-	.text
-	.section __ex_table, "a"
-		.align 2
-		.long 00b, 03b
-		.long 01b, 03b
-		.long 02b, 03b
-	.text
-	bdnz	00b
-	blr
-
-_GLOBAL(_outsl)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwzu	r5,4(r4)
-01:	stwbrx	r5,0,r3
-02:	eieio
-	ISYNC_8xx
-	.section .fixup,"ax"
-03:	blr
-	.text
-	.section __ex_table, "a"
-		.align 2
-		.long 00b, 03b
-		.long 01b, 03b
-		.long 02b, 03b
-	.text
-	bdnz	00b
-	blr
-
-_GLOBAL(__ide_mm_insw)
 _GLOBAL(_insw_ns)
 	cmpwi	0,r5,0
 	mtctr	r5
@@ -874,7 +789,6 @@ _GLOBAL(_insw_ns)
 	bdnz	00b
 	blr
 
-_GLOBAL(__ide_mm_outsw)
 _GLOBAL(_outsw_ns)
 	cmpwi	0,r5,0
 	mtctr	r5
@@ -896,7 +810,6 @@ _GLOBAL(_outsw_ns)
 	bdnz	00b
 	blr
 
-_GLOBAL(__ide_mm_insl)
 _GLOBAL(_insl_ns)
 	cmpwi	0,r5,0
 	mtctr	r5
@@ -918,7 +831,6 @@ _GLOBAL(_insl_ns)
 	bdnz	00b
 	blr
 
-_GLOBAL(__ide_mm_outsl)
 _GLOBAL(_outsl_ns)
 	cmpwi	0,r5,0
 	mtctr	r5
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index d1735401384..c8b65ca8a35 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -115,17 +115,8 @@ EXPORT_SYMBOL(outw);
 EXPORT_SYMBOL(outl);
 EXPORT_SYMBOL(outsl);*/
 
-EXPORT_SYMBOL(__ide_mm_insl);
-EXPORT_SYMBOL(__ide_mm_outsw);
-EXPORT_SYMBOL(__ide_mm_insw);
-EXPORT_SYMBOL(__ide_mm_outsl);
-
 EXPORT_SYMBOL(_insb);
 EXPORT_SYMBOL(_outsb);
-EXPORT_SYMBOL(_insw);
-EXPORT_SYMBOL(_outsw);
-EXPORT_SYMBOL(_insl);
-EXPORT_SYMBOL(_outsl);
 EXPORT_SYMBOL(_insw_ns);
 EXPORT_SYMBOL(_outsw_ns);
 EXPORT_SYMBOL(_insl_ns);
diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
index a74f46d9826..5458ac5da7c 100644
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -127,11 +127,8 @@ void machine_restart(char *cmd)
 	ppc_md.restart(cmd);
 }
 
-void machine_power_off(void)
+static void ppc_generic_power_off(void)
 {
-#ifdef CONFIG_NVRAM
-	nvram_sync();
-#endif
 	ppc_md.power_off();
 }
 
@@ -143,7 +140,17 @@ void machine_halt(void)
 	ppc_md.halt();
 }
 
-void (*pm_power_off)(void) = machine_power_off;
+void (*pm_power_off)(void) = ppc_generic_power_off;
+
+void machine_power_off(void)
+{
+#ifdef CONFIG_NVRAM
+	nvram_sync();
+#endif
+	if (pm_power_off)
+		pm_power_off();
+	ppc_generic_power_off();
+}
 
 #ifdef CONFIG_TAU
 extern u32 cpu_temp(unsigned long cpu);
diff --git a/arch/ppc/platforms/85xx/sbc8560.h b/arch/ppc/platforms/85xx/sbc8560.h
index c7d61cf3a44..e5e156f6010 100644
--- a/arch/ppc/platforms/85xx/sbc8560.h
+++ b/arch/ppc/platforms/85xx/sbc8560.h
@@ -14,6 +14,7 @@
 #define __MACH_SBC8560_H__
  
 #include <platforms/85xx/sbc85xx.h>
+#include <asm/irq.h>
 
 #define CPM_MAP_ADDR    (CCSRBAR + MPC85xx_CPM_OFFSET)
  
diff --git a/arch/ppc/platforms/85xx/sbc85xx.h b/arch/ppc/platforms/85xx/sbc85xx.h
index 21ea7a55639..51df4dc04e2 100644
--- a/arch/ppc/platforms/85xx/sbc85xx.h
+++ b/arch/ppc/platforms/85xx/sbc85xx.h
@@ -49,4 +49,22 @@ extern void sbc8560_init_IRQ(void) __init;
 
 #define MPC85XX_PCI1_IO_SIZE	0x01000000
 
+/* FCC1 Clock Source Configuration.  These can be
+ * redefined in the board specific file.
+ *    Can only choose from CLK9-12 */
+#define F1_RXCLK       12
+#define F1_TXCLK       11
+
+/* FCC2 Clock Source Configuration.  These can be
+ * redefined in the board specific file.
+ *    Can only choose from CLK13-16 */
+#define F2_RXCLK       13
+#define F2_TXCLK       14
+
+/* FCC3 Clock Source Configuration.  These can be
+ * redefined in the board specific file.
+ *    Can only choose from CLK13-16 */
+#define F3_RXCLK       15
+#define F3_TXCLK       16
+
 #endif /* __PLATFORMS_85XX_SBC85XX_H__ */
diff --git a/arch/ppc/syslib/m8260_pci_erratum9.c b/arch/ppc/syslib/m8260_pci_erratum9.c
index 974581ea484..5475709ce07 100644
--- a/arch/ppc/syslib/m8260_pci_erratum9.c
+++ b/arch/ppc/syslib/m8260_pci_erratum9.c
@@ -339,20 +339,6 @@ void insl(unsigned port, void *buf, int nl)
 	idma_pci9_read((u8 *)buf, (u8 *)addr, nl*sizeof(u32), sizeof(u32), 0);
 }
 
-void insw_ns(unsigned port, void *buf, int ns)
-{
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)buf, (u8 *)addr, ns*sizeof(u16), sizeof(u16), 0);
-}
-
-void insl_ns(unsigned port, void *buf, int nl)
-{
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)buf, (u8 *)addr, nl*sizeof(u32), sizeof(u32), 0);
-}
-
 void *memcpy_fromio(void *dest, unsigned long src, size_t count)
 {
 	unsigned long pa = iopa((unsigned long) src);
@@ -373,8 +359,6 @@ EXPORT_SYMBOL(inl);
 EXPORT_SYMBOL(insb);
 EXPORT_SYMBOL(insw);
 EXPORT_SYMBOL(insl);
-EXPORT_SYMBOL(insw_ns);
-EXPORT_SYMBOL(insl_ns);
 EXPORT_SYMBOL(memcpy_fromio);
 
 #endif	/* ifdef CONFIG_8260_PCI9 */
diff --git a/arch/ppc/xmon/start.c b/arch/ppc/xmon/start.c
index f7e92986952..d74a883e5bd 100644
--- a/arch/ppc/xmon/start.c
+++ b/arch/ppc/xmon/start.c
@@ -15,6 +15,7 @@
 #include <asm/processor.h>
 #include <asm/delay.h>
 #include <asm/btext.h>
+#include <asm/ibm4xx.h>
 
 static volatile unsigned char *sccc, *sccd;
 unsigned int TXRDY, RXRDY, DLAB;
@@ -57,23 +58,30 @@ static struct sysrq_key_op sysrq_xmon_op =
 void
 xmon_map_scc(void)
 {
-#ifdef CONFIG_PPC_PREP
-	volatile unsigned char *base;
-
-#elif defined(CONFIG_GEMINI)
+#if defined(CONFIG_GEMINI)
 	/* should already be mapped by the kernel boot */
-	sccc = (volatile unsigned char *) 0xffeffb0d;
 	sccd = (volatile unsigned char *) 0xffeffb08;
-	TXRDY = 0x20;
-	RXRDY = 1;
-	DLAB = 0x80;
 #elif defined(CONFIG_405GP)
-	sccc = (volatile unsigned char *)0xef600305;
 	sccd = (volatile unsigned char *)0xef600300;
+#elif defined(CONFIG_440EP)
+	sccd = (volatile unsigned char *) ioremap(PPC440EP_UART0_ADDR, 8);
+#elif defined(CONFIG_440SP)
+	sccd = (volatile unsigned char *) ioremap64(PPC440SP_UART0_ADDR, 8);
+#elif defined(CONFIG_440SPE)
+	sccd = (volatile unsigned char *) ioremap64(PPC440SPE_UART0_ADDR, 8);
+#elif defined(CONFIG_44x)
+	/* This is the default for 44x platforms.  Any boards that have a
+	   different UART address need to be put in cases before this or the
+	   port will be mapped incorrectly */
+	sccd = (volatile unsigned char *) ioremap64(PPC440GP_UART0_ADDR, 8);
+#endif /* platform */
+
+#ifndef CONFIG_PPC_PREP
+	sccc = sccd + 5;
 	TXRDY = 0x20;
 	RXRDY = 1;
 	DLAB = 0x80;
-#endif /* platform */
+#endif
 
 	register_sysrq_key('x', &sysrq_xmon_op);
 }
diff --git a/arch/ppc/xmon/xmon.c b/arch/ppc/xmon/xmon.c
index 37d234f9339..b1a91744fd2 100644
--- a/arch/ppc/xmon/xmon.c
+++ b/arch/ppc/xmon/xmon.c
@@ -153,6 +153,12 @@ static int xmon_trace[NR_CPUS];
 #define SSTEP	1		/* stepping because of 's' command */
 #define BRSTEP	2		/* stepping over breakpoint */
 
+#ifdef CONFIG_4xx
+#define MSR_SSTEP_ENABLE 0x200
+#else
+#define MSR_SSTEP_ENABLE 0x400
+#endif
+
 static struct pt_regs *xmon_regs[NR_CPUS];
 
 extern inline void sync(void)
@@ -211,6 +217,14 @@ static void get_tb(unsigned *p)
 	p[1] = lo;
 }
 
+static inline void xmon_enable_sstep(struct pt_regs *regs)
+{
+	regs->msr |= MSR_SSTEP_ENABLE;
+#ifdef CONFIG_4xx
+	mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
+#endif
+}
+
 int xmon(struct pt_regs *excp)
 {
 	struct pt_regs regs;
@@ -254,10 +268,10 @@ int xmon(struct pt_regs *excp)
 	cmd = cmds(excp);
 	if (cmd == 's') {
 		xmon_trace[smp_processor_id()] = SSTEP;
-		excp->msr |= 0x400;
+		xmon_enable_sstep(excp);
 	} else if (at_breakpoint(excp->nip)) {
 		xmon_trace[smp_processor_id()] = BRSTEP;
-		excp->msr |= 0x400;
+		xmon_enable_sstep(excp);
 	} else {
 		xmon_trace[smp_processor_id()] = 0;
 		insert_bpts();
@@ -298,7 +312,7 @@ xmon_bpt(struct pt_regs *regs)
 		remove_bpts();
 		excprint(regs);
 		xmon_trace[smp_processor_id()] = BRSTEP;
-		regs->msr |= 0x400;
+		xmon_enable_sstep(regs);
 	} else {
 		xmon(regs);
 	}
@@ -385,7 +399,7 @@ insert_bpts(void)
 		}
 		store_inst((void *) bp->address);
 	}
-#if !defined(CONFIG_8xx)
+#if ! (defined(CONFIG_8xx) || defined(CONFIG_4xx))
 	if (dabr.enabled)
 		set_dabr(dabr.address);
 	if (iabr.enabled)
@@ -400,7 +414,7 @@ remove_bpts(void)
 	struct bpt *bp;
 	unsigned instr;
 
-#if !defined(CONFIG_8xx)
+#if ! (defined(CONFIG_8xx) || defined(CONFIG_4xx))
 	set_dabr(0);
 	set_iabr(0);
 #endif
@@ -677,7 +691,7 @@ bpt_cmds(void)
 
 	cmd = inchar();
 	switch (cmd) {
-#if !defined(CONFIG_8xx)
+#if ! (defined(CONFIG_8xx) || defined(CONFIG_4xx))
 	case 'd':
 		mode = 7;
 		cmd = inchar();
@@ -792,7 +806,7 @@ backtrace(struct pt_regs *excp)
 	for (; sp != 0; sp = stack[0]) {
 		if (mread(sp, stack, sizeof(stack)) != sizeof(stack))
 			break;
-		printf("[%.8lx] ", stack);
+		printf("[%.8lx] ", stack[0]);
 		xmon_print_symbol(stack[1], " ", "\n");
 		if (stack[1] == (unsigned) &ret_from_except
 		    || stack[1] == (unsigned) &ret_from_except_full
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 2f4f70c4dbb..b216ca659cd 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -460,8 +460,7 @@ config S390_HYPFS_FS
 	  information in an s390 hypervisor environment.
 
 config KEXEC
-	bool "kexec system call (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
+	bool "kexec system call"
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
@@ -487,8 +486,22 @@ source "drivers/net/Kconfig"
 
 source "fs/Kconfig"
 
+menu "Instrumentation Support"
+
 source "arch/s390/oprofile/Kconfig"
 
+config KPROBES
+	bool "Kprobes (EXPERIMENTAL)"
+	depends on EXPERIMENTAL && MODULES
+	help
+	  Kprobes allows you to trap at almost any kernel address and
+	  execute a callback function.	register_kprobe() establishes
+	  a probepoint and specifies the callback.  Kprobes is useful
+	  for kernel debugging, non-intrusive instrumentation and testing.
+	  If in doubt, say "N".
+
+endmenu
+
 source "arch/s390/Kconfig.debug"
 
 source "security/Kconfig"
diff --git a/arch/s390/appldata/appldata.h b/arch/s390/appldata/appldata.h
index 71d65eb3065..0429481dea6 100644
--- a/arch/s390/appldata/appldata.h
+++ b/arch/s390/appldata/appldata.h
@@ -29,22 +29,6 @@
 #define CTL_APPLDATA_NET_SUM	2125
 #define CTL_APPLDATA_PROC	2126
 
-#ifndef CONFIG_64BIT
-
-#define APPLDATA_START_INTERVAL_REC 0x00	/* Function codes for */
-#define APPLDATA_STOP_REC	    0x01	/* DIAG 0xDC	  */
-#define APPLDATA_GEN_EVENT_RECORD   0x02
-#define APPLDATA_START_CONFIG_REC   0x03
-
-#else
-
-#define APPLDATA_START_INTERVAL_REC 0x80
-#define APPLDATA_STOP_REC	    0x81
-#define APPLDATA_GEN_EVENT_RECORD   0x82
-#define APPLDATA_START_CONFIG_REC   0x83
-
-#endif /* CONFIG_64BIT */
-
 #define P_INFO(x...)	printk(KERN_INFO MY_PRINT_NAME " info: " x)
 #define P_ERROR(x...)	printk(KERN_ERR MY_PRINT_NAME " error: " x)
 #define P_WARNING(x...)	printk(KERN_WARNING MY_PRINT_NAME " status: " x)
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index a0a94e0ef8d..b69ed742f98 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -14,20 +14,20 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/smp.h>
 #include <linux/interrupt.h>
 #include <linux/proc_fs.h>
 #include <linux/page-flags.h>
 #include <linux/swap.h>
 #include <linux/pagemap.h>
 #include <linux/sysctl.h>
-#include <asm/timer.h>
-//#include <linux/kernel_stat.h>
 #include <linux/notifier.h>
 #include <linux/cpu.h>
 #include <linux/workqueue.h>
+#include <asm/appldata.h>
+#include <asm/timer.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/smp.h>
 
 #include "appldata.h"
 
@@ -39,34 +39,6 @@
 
 #define TOD_MICRO	0x01000			/* nr. of TOD clock units
 						   for 1 microsecond */
-
-/*
- * Parameter list for DIAGNOSE X'DC'
- */
-#ifndef CONFIG_64BIT
-struct appldata_parameter_list {
-	u16 diag;		/* The DIAGNOSE code X'00DC'          */
-	u8  function;		/* The function code for the DIAGNOSE */
-	u8  parlist_length;	/* Length of the parameter list       */
-	u32 product_id_addr;	/* Address of the 16-byte product ID  */
-	u16 reserved;
-	u16 buffer_length;	/* Length of the application data buffer  */
-	u32 buffer_addr;	/* Address of the application data buffer */
-};
-#else
-struct appldata_parameter_list {
-	u16 diag;
-	u8  function;
-	u8  parlist_length;
-	u32 unused01;
-	u16 reserved;
-	u16 buffer_length;
-	u32 unused02;
-	u64 product_id_addr;
-	u64 buffer_addr;
-};
-#endif /* CONFIG_64BIT */
-
 /*
  * /proc entries (sysctl)
  */
@@ -181,46 +153,17 @@ static void appldata_work_fn(void *data)
 int appldata_diag(char record_nr, u16 function, unsigned long buffer,
 			u16 length, char *mod_lvl)
 {
-	unsigned long ry;
-	struct appldata_product_id {
-		char prod_nr[7];			/* product nr. */
-		char prod_fn[2];			/* product function */
-		char record_nr;				/* record nr. */
-		char version_nr[2];			/* version */
-		char release_nr[2];			/* release */
-		char mod_lvl[2];			/* modification lvl. */
-	} appldata_product_id = {
-	/* all strings are EBCDIC, record_nr is byte */
+	struct appldata_product_id id = {
 		.prod_nr    = {0xD3, 0xC9, 0xD5, 0xE4,
-				0xE7, 0xD2, 0xD9},	/* "LINUXKR" */
-		.prod_fn    = {0xD5, 0xD3},		/* "NL" */
+			       0xE7, 0xD2, 0xD9},	/* "LINUXKR" */
+		.prod_fn    = 0xD5D3,			/* "NL" */
 		.record_nr  = record_nr,
-		.version_nr = {0xF2, 0xF6},		/* "26" */
-		.release_nr = {0xF0, 0xF1},		/* "01" */
-		.mod_lvl    = {mod_lvl[0], mod_lvl[1]},
-	};
-	struct appldata_parameter_list appldata_parameter_list = {
-				.diag = 0xDC,
-				.function = function,
-				.parlist_length =
-					sizeof(appldata_parameter_list),
-				.buffer_length = length,
-				.product_id_addr =
-					(unsigned long) &appldata_product_id,
-				.buffer_addr = virt_to_phys((void *) buffer)
+		.version_nr = 0xF2F6,			/* "26" */
+		.release_nr = 0xF0F1,			/* "01" */
+		.mod_lvl    = (mod_lvl[0]) << 8 | mod_lvl[1],
 	};
 
-	if (!MACHINE_IS_VM)
-		return -ENOSYS;
-	ry = -1;
-	asm volatile(
-			"diag %1,%0,0xDC\n\t"
-			: "=d" (ry)
-			: "d" (&appldata_parameter_list),
-			  "m" (appldata_parameter_list),
-			  "m" (appldata_product_id)
-			: "cc");
-	return (int) ry;
+	return appldata_asm(&id, function, (void *) buffer, length);
 }
 /************************ timer, work, DIAG <END> ****************************/
 
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c
index 161acc5c8a1..76a15523ae9 100644
--- a/arch/s390/appldata/appldata_os.c
+++ b/arch/s390/appldata/appldata_os.c
@@ -16,6 +16,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/netdevice.h>
 #include <linux/sched.h>
+#include <asm/appldata.h>
 #include <asm/smp.h>
 
 #include "appldata.h"
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 5713c7e5bd1..15c9eec0292 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -16,9 +16,9 @@
  *
  */
 
+#include <crypto/algapi.h>
 #include <linux/module.h>
 #include <linux/init.h>
-#include <linux/crypto.h>
 #include "crypt_s390.h"
 
 #define AES_MIN_KEY_SIZE	16
@@ -34,13 +34,16 @@ int has_aes_256 = 0;
 struct s390_aes_ctx {
 	u8 iv[AES_BLOCK_SIZE];
 	u8 key[AES_MAX_KEY_SIZE];
+	long enc;
+	long dec;
 	int key_len;
 };
 
 static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-		       unsigned int key_len, u32 *flags)
+		       unsigned int key_len)
 {
 	struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
+	u32 *flags = &tfm->crt_flags;
 
 	switch (key_len) {
 	case 16:
@@ -110,133 +113,206 @@ static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 	}
 }
 
-static unsigned int aes_encrypt_ecb(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
-{
-	struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
 
-	/* only use complete blocks */
-	nbytes &= ~(AES_BLOCK_SIZE - 1);
+static struct crypto_alg aes_alg = {
+	.cra_name		=	"aes",
+	.cra_driver_name	=	"aes-s390",
+	.cra_priority		=	CRYPT_S390_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	AES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct s390_aes_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(aes_alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	AES_MIN_KEY_SIZE,
+			.cia_max_keysize	=	AES_MAX_KEY_SIZE,
+			.cia_setkey		=	aes_set_key,
+			.cia_encrypt		=	aes_encrypt,
+			.cia_decrypt		=	aes_decrypt,
+		}
+	}
+};
+
+static int ecb_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+			   unsigned int key_len)
+{
+	struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
 
-	switch (sctx->key_len) {
+	switch (key_len) {
 	case 16:
-		ret = crypt_s390_km(KM_AES_128_ENCRYPT, &sctx->key, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
+		sctx->enc = KM_AES_128_ENCRYPT;
+		sctx->dec = KM_AES_128_DECRYPT;
 		break;
 	case 24:
-		ret = crypt_s390_km(KM_AES_192_ENCRYPT, &sctx->key, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
+		sctx->enc = KM_AES_192_ENCRYPT;
+		sctx->dec = KM_AES_192_DECRYPT;
 		break;
 	case 32:
-		ret = crypt_s390_km(KM_AES_256_ENCRYPT, &sctx->key, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
+		sctx->enc = KM_AES_256_ENCRYPT;
+		sctx->dec = KM_AES_256_DECRYPT;
 		break;
 	}
-	return nbytes;
+
+	return aes_set_key(tfm, in_key, key_len);
 }
 
-static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static int ecb_aes_crypt(struct blkcipher_desc *desc, long func, void *param,
+			 struct blkcipher_walk *walk)
 {
-	struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	int ret = blkcipher_walk_virt(desc, walk);
+	unsigned int nbytes;
 
-	/* only use complete blocks */
-	nbytes &= ~(AES_BLOCK_SIZE - 1);
+	while ((nbytes = walk->nbytes)) {
+		/* only use complete blocks */
+		unsigned int n = nbytes & ~(AES_BLOCK_SIZE - 1);
+		u8 *out = walk->dst.virt.addr;
+		u8 *in = walk->src.virt.addr;
 
-	switch (sctx->key_len) {
-	case 16:
-		ret = crypt_s390_km(KM_AES_128_DECRYPT, &sctx->key, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
-		break;
-	case 24:
-		ret = crypt_s390_km(KM_AES_192_DECRYPT, &sctx->key, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
-		break;
-	case 32:
-		ret = crypt_s390_km(KM_AES_256_DECRYPT, &sctx->key, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
-		break;
+		ret = crypt_s390_km(func, param, out, in, n);
+		BUG_ON((ret < 0) || (ret != n));
+
+		nbytes &= AES_BLOCK_SIZE - 1;
+		ret = blkcipher_walk_done(desc, walk, nbytes);
 	}
-	return nbytes;
+
+	return ret;
 }
 
-static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static int ecb_aes_encrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
 {
-	struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	struct s390_aes_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	/* only use complete blocks */
-	nbytes &= ~(AES_BLOCK_SIZE - 1);
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_aes_crypt(desc, sctx->enc, sctx->key, &walk);
+}
 
-	memcpy(&sctx->iv, desc->info, AES_BLOCK_SIZE);
-	switch (sctx->key_len) {
+static int ecb_aes_decrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct s390_aes_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
+
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_aes_crypt(desc, sctx->dec, sctx->key, &walk);
+}
+
+static struct crypto_alg ecb_aes_alg = {
+	.cra_name		=	"ecb(aes)",
+	.cra_driver_name	=	"ecb-aes-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		=	AES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct s390_aes_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(ecb_aes_alg.cra_list),
+	.cra_u			=	{
+		.blkcipher = {
+			.min_keysize		=	AES_MIN_KEY_SIZE,
+			.max_keysize		=	AES_MAX_KEY_SIZE,
+			.setkey			=	ecb_aes_set_key,
+			.encrypt		=	ecb_aes_encrypt,
+			.decrypt		=	ecb_aes_decrypt,
+		}
+	}
+};
+
+static int cbc_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+			   unsigned int key_len)
+{
+	struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
+
+	switch (key_len) {
 	case 16:
-		ret = crypt_s390_kmc(KMC_AES_128_ENCRYPT, &sctx->iv, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
+		sctx->enc = KMC_AES_128_ENCRYPT;
+		sctx->dec = KMC_AES_128_DECRYPT;
 		break;
 	case 24:
-		ret = crypt_s390_kmc(KMC_AES_192_ENCRYPT, &sctx->iv, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
+		sctx->enc = KMC_AES_192_ENCRYPT;
+		sctx->dec = KMC_AES_192_DECRYPT;
 		break;
 	case 32:
-		ret = crypt_s390_kmc(KMC_AES_256_ENCRYPT, &sctx->iv, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
+		sctx->enc = KMC_AES_256_ENCRYPT;
+		sctx->dec = KMC_AES_256_DECRYPT;
 		break;
 	}
-	memcpy(desc->info, &sctx->iv, AES_BLOCK_SIZE);
 
-	return nbytes;
+	return aes_set_key(tfm, in_key, key_len);
 }
 
-static unsigned int aes_decrypt_cbc(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static int cbc_aes_crypt(struct blkcipher_desc *desc, long func, void *param,
+			 struct blkcipher_walk *walk)
 {
-	struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	int ret = blkcipher_walk_virt(desc, walk);
+	unsigned int nbytes = walk->nbytes;
 
-	/* only use complete blocks */
-	nbytes &= ~(AES_BLOCK_SIZE - 1);
+	if (!nbytes)
+		goto out;
 
-	memcpy(&sctx->iv, desc->info, AES_BLOCK_SIZE);
-	switch (sctx->key_len) {
-	case 16:
-		ret = crypt_s390_kmc(KMC_AES_128_DECRYPT, &sctx->iv, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
-		break;
-	case 24:
-		ret = crypt_s390_kmc(KMC_AES_192_DECRYPT, &sctx->iv, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
-		break;
-	case 32:
-		ret = crypt_s390_kmc(KMC_AES_256_DECRYPT, &sctx->iv, out, in, nbytes);
-		BUG_ON((ret < 0) || (ret != nbytes));
-		break;
-	}
-	return nbytes;
+	memcpy(param, walk->iv, AES_BLOCK_SIZE);
+	do {
+		/* only use complete blocks */
+		unsigned int n = nbytes & ~(AES_BLOCK_SIZE - 1);
+		u8 *out = walk->dst.virt.addr;
+		u8 *in = walk->src.virt.addr;
+
+		ret = crypt_s390_kmc(func, param, out, in, n);
+		BUG_ON((ret < 0) || (ret != n));
+
+		nbytes &= AES_BLOCK_SIZE - 1;
+		ret = blkcipher_walk_done(desc, walk, nbytes);
+	} while ((nbytes = walk->nbytes));
+	memcpy(walk->iv, param, AES_BLOCK_SIZE);
+
+out:
+	return ret;
 }
 
+static int cbc_aes_encrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct s390_aes_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-static struct crypto_alg aes_alg = {
-	.cra_name		=	"aes",
-	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_aes_crypt(desc, sctx->enc, sctx->iv, &walk);
+}
+
+static int cbc_aes_decrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct s390_aes_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
+
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_aes_crypt(desc, sctx->dec, sctx->iv, &walk);
+}
+
+static struct crypto_alg cbc_aes_alg = {
+	.cra_name		=	"cbc(aes)",
+	.cra_driver_name	=	"cbc-aes-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	AES_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct s390_aes_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
-	.cra_list		=	LIST_HEAD_INIT(aes_alg.cra_list),
+	.cra_list		=	LIST_HEAD_INIT(cbc_aes_alg.cra_list),
 	.cra_u			=	{
-		.cipher = {
-			.cia_min_keysize	=	AES_MIN_KEY_SIZE,
-			.cia_max_keysize	=	AES_MAX_KEY_SIZE,
-			.cia_setkey		=	aes_set_key,
-			.cia_encrypt		=	aes_encrypt,
-			.cia_decrypt		=	aes_decrypt,
-			.cia_encrypt_ecb	=	aes_encrypt_ecb,
-			.cia_decrypt_ecb	=	aes_decrypt_ecb,
-			.cia_encrypt_cbc	=	aes_encrypt_cbc,
-			.cia_decrypt_cbc	=	aes_decrypt_cbc,
+		.blkcipher = {
+			.min_keysize		=	AES_MIN_KEY_SIZE,
+			.max_keysize		=	AES_MAX_KEY_SIZE,
+			.ivsize			=	AES_BLOCK_SIZE,
+			.setkey			=	cbc_aes_set_key,
+			.encrypt		=	cbc_aes_encrypt,
+			.decrypt		=	cbc_aes_decrypt,
 		}
 	}
 };
@@ -256,13 +332,40 @@ static int __init aes_init(void)
 		return -ENOSYS;
 
 	ret = crypto_register_alg(&aes_alg);
-	if (ret != 0)
-		printk(KERN_INFO "crypt_s390: aes_s390 couldn't be loaded.\n");
+	if (ret != 0) {
+		printk(KERN_INFO "crypt_s390: aes-s390 couldn't be loaded.\n");
+		goto aes_err;
+	}
+
+	ret = crypto_register_alg(&ecb_aes_alg);
+	if (ret != 0) {
+		printk(KERN_INFO
+		       "crypt_s390: ecb-aes-s390 couldn't be loaded.\n");
+		goto ecb_aes_err;
+	}
+
+	ret = crypto_register_alg(&cbc_aes_alg);
+	if (ret != 0) {
+		printk(KERN_INFO
+		       "crypt_s390: cbc-aes-s390 couldn't be loaded.\n");
+		goto cbc_aes_err;
+	}
+
+out:
 	return ret;
+
+cbc_aes_err:
+	crypto_unregister_alg(&ecb_aes_alg);
+ecb_aes_err:
+	crypto_unregister_alg(&aes_alg);
+aes_err:
+	goto out;
 }
 
 static void __exit aes_fini(void)
 {
+	crypto_unregister_alg(&cbc_aes_alg);
+	crypto_unregister_alg(&ecb_aes_alg);
 	crypto_unregister_alg(&aes_alg);
 }
 
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index d1c259a7fe3..efd836c2e4a 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -20,6 +20,9 @@
 #define CRYPT_S390_OP_MASK 0xFF00
 #define CRYPT_S390_FUNC_MASK 0x00FF
 
+#define CRYPT_S390_PRIORITY 300
+#define CRYPT_S390_COMPOSITE_PRIORITY 400
+
 /* s930 cryptographic operations */
 enum crypt_s390_operations {
 	CRYPT_S390_KM   = 0x0100,
diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
index b3f7496a79b..2aba04852fe 100644
--- a/arch/s390/crypto/des_s390.c
+++ b/arch/s390/crypto/des_s390.c
@@ -13,9 +13,10 @@
  * (at your option) any later version.
  *
  */
+
+#include <crypto/algapi.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/crypto.h>
 
 #include "crypt_s390.h"
 #include "crypto_des.h"
@@ -45,9 +46,10 @@ struct crypt_s390_des3_192_ctx {
 };
 
 static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
-		      unsigned int keylen, u32 *flags)
+		      unsigned int keylen)
 {
 	struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
+	u32 *flags = &tfm->crt_flags;
 	int ret;
 
 	/* test if key is valid (not a weak key) */
@@ -71,85 +73,159 @@ static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 	crypt_s390_km(KM_DEA_DECRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
 }
 
-static unsigned int des_encrypt_ecb(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static struct crypto_alg des_alg = {
+	.cra_name		=	"des",
+	.cra_driver_name	=	"des-s390",
+	.cra_priority		=	CRYPT_S390_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	DES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct crypt_s390_des_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(des_alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	DES_KEY_SIZE,
+			.cia_max_keysize	=	DES_KEY_SIZE,
+			.cia_setkey		=	des_setkey,
+			.cia_encrypt		=	des_encrypt,
+			.cia_decrypt		=	des_decrypt,
+		}
+	}
+};
+
+static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
+			    void *param, struct blkcipher_walk *walk)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	int ret = blkcipher_walk_virt(desc, walk);
+	unsigned int nbytes;
+
+	while ((nbytes = walk->nbytes)) {
+		/* only use complete blocks */
+		unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1);
+		u8 *out = walk->dst.virt.addr;
+		u8 *in = walk->src.virt.addr;
 
-	/* only use complete blocks */
-	nbytes &= ~(DES_BLOCK_SIZE - 1);
-	ret = crypt_s390_km(KM_DEA_ENCRYPT, sctx->key, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+		ret = crypt_s390_km(func, param, out, in, n);
+		BUG_ON((ret < 0) || (ret != n));
 
-	return nbytes;
+		nbytes &= DES_BLOCK_SIZE - 1;
+		ret = blkcipher_walk_done(desc, walk, nbytes);
+	}
+
+	return ret;
 }
 
-static unsigned int des_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static int cbc_desall_crypt(struct blkcipher_desc *desc, long func,
+			    void *param, struct blkcipher_walk *walk)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	int ret = blkcipher_walk_virt(desc, walk);
+	unsigned int nbytes = walk->nbytes;
+
+	if (!nbytes)
+		goto out;
+
+	memcpy(param, walk->iv, DES_BLOCK_SIZE);
+	do {
+		/* only use complete blocks */
+		unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1);
+		u8 *out = walk->dst.virt.addr;
+		u8 *in = walk->src.virt.addr;
 
-	/* only use complete blocks */
-	nbytes &= ~(DES_BLOCK_SIZE - 1);
-	ret = crypt_s390_km(KM_DEA_DECRYPT, sctx->key, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+		ret = crypt_s390_kmc(func, param, out, in, n);
+		BUG_ON((ret < 0) || (ret != n));
 
-	return nbytes;
+		nbytes &= DES_BLOCK_SIZE - 1;
+		ret = blkcipher_walk_done(desc, walk, nbytes);
+	} while ((nbytes = walk->nbytes));
+	memcpy(walk->iv, param, DES_BLOCK_SIZE);
+
+out:
+	return ret;
 }
 
-static unsigned int des_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static int ecb_des_encrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	/* only use complete blocks */
-	nbytes &= ~(DES_BLOCK_SIZE - 1);
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, sctx->key, &walk);
+}
 
-	memcpy(sctx->iv, desc->info, DES_BLOCK_SIZE);
-	ret = crypt_s390_kmc(KMC_DEA_ENCRYPT, &sctx->iv, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+static int ecb_des_decrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	memcpy(desc->info, sctx->iv, DES_BLOCK_SIZE);
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_desall_crypt(desc, KM_DEA_DECRYPT, sctx->key, &walk);
 }
 
-static unsigned int des_decrypt_cbc(const struct cipher_desc *desc, u8 *out,
-				    const u8 *in, unsigned int nbytes)
+static struct crypto_alg ecb_des_alg = {
+	.cra_name		=	"ecb(des)",
+	.cra_driver_name	=	"ecb-des-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		=	DES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct crypt_s390_des_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(ecb_des_alg.cra_list),
+	.cra_u			=	{
+		.blkcipher = {
+			.min_keysize		=	DES_KEY_SIZE,
+			.max_keysize		=	DES_KEY_SIZE,
+			.setkey			=	des_setkey,
+			.encrypt		=	ecb_des_encrypt,
+			.decrypt		=	ecb_des_decrypt,
+		}
+	}
+};
+
+static int cbc_des_encrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
 {
-	struct crypt_s390_des_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	/* only use complete blocks */
-	nbytes &= ~(DES_BLOCK_SIZE - 1);
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, sctx->iv, &walk);
+}
 
-	memcpy(&sctx->iv, desc->info, DES_BLOCK_SIZE);
-	ret = crypt_s390_kmc(KMC_DEA_DECRYPT, &sctx->iv, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+static int cbc_des_decrypt(struct blkcipher_desc *desc,
+			   struct scatterlist *dst, struct scatterlist *src,
+			   unsigned int nbytes)
+{
+	struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, sctx->iv, &walk);
 }
 
-static struct crypto_alg des_alg = {
-	.cra_name		=	"des",
-	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+static struct crypto_alg cbc_des_alg = {
+	.cra_name		=	"cbc(des)",
+	.cra_driver_name	=	"cbc-des-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct crypt_s390_des_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
-	.cra_list		=	LIST_HEAD_INIT(des_alg.cra_list),
+	.cra_list		=	LIST_HEAD_INIT(cbc_des_alg.cra_list),
 	.cra_u			=	{
-		.cipher = {
-			.cia_min_keysize	=	DES_KEY_SIZE,
-			.cia_max_keysize	=	DES_KEY_SIZE,
-			.cia_setkey		=	des_setkey,
-			.cia_encrypt		=	des_encrypt,
-			.cia_decrypt		=	des_decrypt,
-			.cia_encrypt_ecb	=	des_encrypt_ecb,
-			.cia_decrypt_ecb	=	des_decrypt_ecb,
-			.cia_encrypt_cbc	=	des_encrypt_cbc,
-			.cia_decrypt_cbc	=	des_decrypt_cbc,
+		.blkcipher = {
+			.min_keysize		=	DES_KEY_SIZE,
+			.max_keysize		=	DES_KEY_SIZE,
+			.ivsize			=	DES_BLOCK_SIZE,
+			.setkey			=	des_setkey,
+			.encrypt		=	cbc_des_encrypt,
+			.decrypt		=	cbc_des_decrypt,
 		}
 	}
 };
@@ -167,11 +243,12 @@ static struct crypto_alg des_alg = {
  *
  */
 static int des3_128_setkey(struct crypto_tfm *tfm, const u8 *key,
-			   unsigned int keylen, u32 *flags)
+			   unsigned int keylen)
 {
 	int i, ret;
 	struct crypt_s390_des3_128_ctx *dctx = crypto_tfm_ctx(tfm);
-	const u8* temp_key = key;
+	const u8 *temp_key = key;
+	u32 *flags = &tfm->crt_flags;
 
 	if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE))) {
 		*flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED;
@@ -202,89 +279,111 @@ static void des3_128_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 		      DES3_128_BLOCK_SIZE);
 }
 
-static unsigned int des3_128_encrypt_ecb(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
-{
-	struct crypt_s390_des3_128_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+static struct crypto_alg des3_128_alg = {
+	.cra_name		=	"des3_ede128",
+	.cra_driver_name	=	"des3_ede128-s390",
+	.cra_priority		=	CRYPT_S390_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	DES3_128_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_128_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(des3_128_alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	DES3_128_KEY_SIZE,
+			.cia_max_keysize	=	DES3_128_KEY_SIZE,
+			.cia_setkey		=	des3_128_setkey,
+			.cia_encrypt		=	des3_128_encrypt,
+			.cia_decrypt		=	des3_128_decrypt,
+		}
+	}
+};
 
-	/* only use complete blocks */
-	nbytes &= ~(DES3_128_BLOCK_SIZE - 1);
-	ret = crypt_s390_km(KM_TDEA_128_ENCRYPT, sctx->key, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+static int ecb_des3_128_encrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
+{
+	struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_desall_crypt(desc, KM_TDEA_128_ENCRYPT, sctx->key, &walk);
 }
 
-static unsigned int des3_128_decrypt_ecb(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
+static int ecb_des3_128_decrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
 {
-	struct crypt_s390_des3_128_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	/* only use complete blocks */
-	nbytes &= ~(DES3_128_BLOCK_SIZE - 1);
-	ret = crypt_s390_km(KM_TDEA_128_DECRYPT, sctx->key, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
-
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_desall_crypt(desc, KM_TDEA_128_DECRYPT, sctx->key, &walk);
 }
 
-static unsigned int des3_128_encrypt_cbc(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
-{
-	struct crypt_s390_des3_128_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
-
-	/* only use complete blocks */
-	nbytes &= ~(DES3_128_BLOCK_SIZE - 1);
+static struct crypto_alg ecb_des3_128_alg = {
+	.cra_name		=	"ecb(des3_ede128)",
+	.cra_driver_name	=	"ecb-des3_ede128-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		=	DES3_128_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_128_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(
+						ecb_des3_128_alg.cra_list),
+	.cra_u			=	{
+		.blkcipher = {
+			.min_keysize		=	DES3_128_KEY_SIZE,
+			.max_keysize		=	DES3_128_KEY_SIZE,
+			.setkey			=	des3_128_setkey,
+			.encrypt		=	ecb_des3_128_encrypt,
+			.decrypt		=	ecb_des3_128_decrypt,
+		}
+	}
+};
 
-	memcpy(sctx->iv, desc->info, DES3_128_BLOCK_SIZE);
-	ret = crypt_s390_kmc(KMC_TDEA_128_ENCRYPT, &sctx->iv, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+static int cbc_des3_128_encrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
+{
+	struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	memcpy(desc->info, sctx->iv, DES3_128_BLOCK_SIZE);
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_desall_crypt(desc, KMC_TDEA_128_ENCRYPT, sctx->iv, &walk);
 }
 
-static unsigned int des3_128_decrypt_cbc(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
+static int cbc_des3_128_decrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
 {
-	struct crypt_s390_des3_128_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
-
-	/* only use complete blocks */
-	nbytes &= ~(DES3_128_BLOCK_SIZE - 1);
-
-	memcpy(&sctx->iv, desc->info, DES3_128_BLOCK_SIZE);
-	ret = crypt_s390_kmc(KMC_TDEA_128_DECRYPT, &sctx->iv, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+	struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_desall_crypt(desc, KMC_TDEA_128_DECRYPT, sctx->iv, &walk);
 }
 
-static struct crypto_alg des3_128_alg = {
-	.cra_name		=	"des3_ede128",
-	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+static struct crypto_alg cbc_des3_128_alg = {
+	.cra_name		=	"cbc(des3_ede128)",
+	.cra_driver_name	=	"cbc-des3_ede128-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES3_128_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_128_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
-	.cra_list		=	LIST_HEAD_INIT(des3_128_alg.cra_list),
+	.cra_list		=	LIST_HEAD_INIT(
+						cbc_des3_128_alg.cra_list),
 	.cra_u			=	{
-		.cipher = {
-			.cia_min_keysize	=	DES3_128_KEY_SIZE,
-			.cia_max_keysize	=	DES3_128_KEY_SIZE,
-			.cia_setkey		=	des3_128_setkey,
-			.cia_encrypt		=	des3_128_encrypt,
-			.cia_decrypt		=	des3_128_decrypt,
-			.cia_encrypt_ecb	=	des3_128_encrypt_ecb,
-			.cia_decrypt_ecb	=	des3_128_decrypt_ecb,
-			.cia_encrypt_cbc	=	des3_128_encrypt_cbc,
-			.cia_decrypt_cbc	=	des3_128_decrypt_cbc,
+		.blkcipher = {
+			.min_keysize		=	DES3_128_KEY_SIZE,
+			.max_keysize		=	DES3_128_KEY_SIZE,
+			.ivsize			=	DES3_128_BLOCK_SIZE,
+			.setkey			=	des3_128_setkey,
+			.encrypt		=	cbc_des3_128_encrypt,
+			.decrypt		=	cbc_des3_128_decrypt,
 		}
 	}
 };
@@ -303,11 +402,12 @@ static struct crypto_alg des3_128_alg = {
  *
  */
 static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key,
-			   unsigned int keylen, u32 *flags)
+			   unsigned int keylen)
 {
 	int i, ret;
 	struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
-	const u8* temp_key = key;
+	const u8 *temp_key = key;
+	u32 *flags = &tfm->crt_flags;
 
 	if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
 	    memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2],
@@ -341,89 +441,111 @@ static void des3_192_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 		      DES3_192_BLOCK_SIZE);
 }
 
-static unsigned int des3_192_encrypt_ecb(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
-{
-	struct crypt_s390_des3_192_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+static struct crypto_alg des3_192_alg = {
+	.cra_name		=	"des3_ede",
+	.cra_driver_name	=	"des3_ede-s390",
+	.cra_priority		=	CRYPT_S390_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	DES3_192_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_192_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(des3_192_alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	DES3_192_KEY_SIZE,
+			.cia_max_keysize	=	DES3_192_KEY_SIZE,
+			.cia_setkey		=	des3_192_setkey,
+			.cia_encrypt		=	des3_192_encrypt,
+			.cia_decrypt		=	des3_192_decrypt,
+		}
+	}
+};
 
-	/* only use complete blocks */
-	nbytes &= ~(DES3_192_BLOCK_SIZE - 1);
-	ret = crypt_s390_km(KM_TDEA_192_ENCRYPT, sctx->key, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+static int ecb_des3_192_encrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
+{
+	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, sctx->key, &walk);
 }
 
-static unsigned int des3_192_decrypt_ecb(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
+static int ecb_des3_192_decrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
 {
-	struct crypt_s390_des3_192_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
-
-	/* only use complete blocks */
-	nbytes &= ~(DES3_192_BLOCK_SIZE - 1);
-	ret = crypt_s390_km(KM_TDEA_192_DECRYPT, sctx->key, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, sctx->key, &walk);
 }
 
-static unsigned int des3_192_encrypt_cbc(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
-{
-	struct crypt_s390_des3_192_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
-
-	/* only use complete blocks */
-	nbytes &= ~(DES3_192_BLOCK_SIZE - 1);
+static struct crypto_alg ecb_des3_192_alg = {
+	.cra_name		=	"ecb(des3_ede)",
+	.cra_driver_name	=	"ecb-des3_ede-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		=	DES3_192_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_192_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(
+						ecb_des3_192_alg.cra_list),
+	.cra_u			=	{
+		.blkcipher = {
+			.min_keysize		=	DES3_192_KEY_SIZE,
+			.max_keysize		=	DES3_192_KEY_SIZE,
+			.setkey			=	des3_192_setkey,
+			.encrypt		=	ecb_des3_192_encrypt,
+			.decrypt		=	ecb_des3_192_decrypt,
+		}
+	}
+};
 
-	memcpy(sctx->iv, desc->info, DES3_192_BLOCK_SIZE);
-	ret = crypt_s390_kmc(KMC_TDEA_192_ENCRYPT, &sctx->iv, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
+static int cbc_des3_192_encrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
+{
+	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	memcpy(desc->info, sctx->iv, DES3_192_BLOCK_SIZE);
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, sctx->iv, &walk);
 }
 
-static unsigned int des3_192_decrypt_cbc(const struct cipher_desc *desc,
-					 u8 *out, const u8 *in,
-					 unsigned int nbytes)
+static int cbc_des3_192_decrypt(struct blkcipher_desc *desc,
+				struct scatterlist *dst,
+				struct scatterlist *src, unsigned int nbytes)
 {
-	struct crypt_s390_des3_192_ctx *sctx = crypto_tfm_ctx(desc->tfm);
-	int ret;
+	struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
+	struct blkcipher_walk walk;
 
-	/* only use complete blocks */
-	nbytes &= ~(DES3_192_BLOCK_SIZE - 1);
-
-	memcpy(&sctx->iv, desc->info, DES3_192_BLOCK_SIZE);
-	ret = crypt_s390_kmc(KMC_TDEA_192_DECRYPT, &sctx->iv, out, in, nbytes);
-	BUG_ON((ret < 0) || (ret != nbytes));
-
-	return nbytes;
+	blkcipher_walk_init(&walk, dst, src, nbytes);
+	return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, sctx->iv, &walk);
 }
 
-static struct crypto_alg des3_192_alg = {
-	.cra_name		=	"des3_ede",
-	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+static struct crypto_alg cbc_des3_192_alg = {
+	.cra_name		=	"cbc(des3_ede)",
+	.cra_driver_name	=	"cbc-des3_ede-s390",
+	.cra_priority		=	CRYPT_S390_COMPOSITE_PRIORITY,
+	.cra_flags		=	CRYPTO_ALG_TYPE_BLKCIPHER,
 	.cra_blocksize		=	DES3_192_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct crypt_s390_des3_192_ctx),
+	.cra_type		=	&crypto_blkcipher_type,
 	.cra_module		=	THIS_MODULE,
-	.cra_list		=	LIST_HEAD_INIT(des3_192_alg.cra_list),
+	.cra_list		=	LIST_HEAD_INIT(
+						cbc_des3_192_alg.cra_list),
 	.cra_u			=	{
-		.cipher = {
-			.cia_min_keysize	=	DES3_192_KEY_SIZE,
-			.cia_max_keysize	=	DES3_192_KEY_SIZE,
-			.cia_setkey		=	des3_192_setkey,
-			.cia_encrypt		=	des3_192_encrypt,
-			.cia_decrypt		=	des3_192_decrypt,
-			.cia_encrypt_ecb	=	des3_192_encrypt_ecb,
-			.cia_decrypt_ecb	=	des3_192_decrypt_ecb,
-			.cia_encrypt_cbc	=	des3_192_encrypt_cbc,
-			.cia_decrypt_cbc	=	des3_192_decrypt_cbc,
+		.blkcipher = {
+			.min_keysize		=	DES3_192_KEY_SIZE,
+			.max_keysize		=	DES3_192_KEY_SIZE,
+			.ivsize			=	DES3_192_BLOCK_SIZE,
+			.setkey			=	des3_192_setkey,
+			.encrypt		=	cbc_des3_192_encrypt,
+			.decrypt		=	cbc_des3_192_decrypt,
 		}
 	}
 };
@@ -437,22 +559,69 @@ static int init(void)
 	    !crypt_s390_func_available(KM_TDEA_192_ENCRYPT))
 		return -ENOSYS;
 
-	ret |= (crypto_register_alg(&des_alg) == 0) ? 0:1;
-	ret |= (crypto_register_alg(&des3_128_alg) == 0) ? 0:2;
-	ret |= (crypto_register_alg(&des3_192_alg) == 0) ? 0:4;
-	if (ret) {
-		crypto_unregister_alg(&des3_192_alg);
-		crypto_unregister_alg(&des3_128_alg);
-		crypto_unregister_alg(&des_alg);
-		return -EEXIST;
-	}
-	return 0;
+	ret = crypto_register_alg(&des_alg);
+	if (ret)
+		goto des_err;
+	ret = crypto_register_alg(&ecb_des_alg);
+	if (ret)
+		goto ecb_des_err;
+	ret = crypto_register_alg(&cbc_des_alg);
+	if (ret)
+		goto cbc_des_err;
+
+	ret = crypto_register_alg(&des3_128_alg);
+	if (ret)
+		goto des3_128_err;
+	ret = crypto_register_alg(&ecb_des3_128_alg);
+	if (ret)
+		goto ecb_des3_128_err;
+	ret = crypto_register_alg(&cbc_des3_128_alg);
+	if (ret)
+		goto cbc_des3_128_err;
+
+	ret = crypto_register_alg(&des3_192_alg);
+	if (ret)
+		goto des3_192_err;
+	ret = crypto_register_alg(&ecb_des3_192_alg);
+	if (ret)
+		goto ecb_des3_192_err;
+	ret = crypto_register_alg(&cbc_des3_192_alg);
+	if (ret)
+		goto cbc_des3_192_err;
+
+out:
+	return ret;
+
+cbc_des3_192_err:
+	crypto_unregister_alg(&ecb_des3_192_alg);
+ecb_des3_192_err:
+	crypto_unregister_alg(&des3_192_alg);
+des3_192_err:
+	crypto_unregister_alg(&cbc_des3_128_alg);
+cbc_des3_128_err:
+	crypto_unregister_alg(&ecb_des3_128_alg);
+ecb_des3_128_err:
+	crypto_unregister_alg(&des3_128_alg);
+des3_128_err:
+	crypto_unregister_alg(&cbc_des_alg);
+cbc_des_err:
+	crypto_unregister_alg(&ecb_des_alg);
+ecb_des_err:
+	crypto_unregister_alg(&des_alg);
+des_err:
+	goto out;
 }
 
 static void __exit fini(void)
 {
+	crypto_unregister_alg(&cbc_des3_192_alg);
+	crypto_unregister_alg(&ecb_des3_192_alg);
 	crypto_unregister_alg(&des3_192_alg);
+	crypto_unregister_alg(&cbc_des3_128_alg);
+	crypto_unregister_alg(&ecb_des3_128_alg);
 	crypto_unregister_alg(&des3_128_alg);
+	crypto_unregister_alg(&cbc_des_alg);
+	crypto_unregister_alg(&ecb_des_alg);
 	crypto_unregister_alg(&des_alg);
 }
 
diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 9d34a35b1aa..49ca8690ee3 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -126,6 +126,8 @@ static void sha1_final(struct crypto_tfm *tfm, u8 *out)
 
 static struct crypto_alg alg = {
 	.cra_name	=	"sha1",
+	.cra_driver_name =	"sha1-s390",
+	.cra_priority	=	CRYPT_S390_PRIORITY,
 	.cra_flags	=	CRYPTO_ALG_TYPE_DIGEST,
 	.cra_blocksize	=	SHA1_BLOCK_SIZE,
 	.cra_ctxsize	=	sizeof(struct crypt_s390_sha1_ctx),
diff --git a/arch/s390/crypto/sha256_s390.c b/arch/s390/crypto/sha256_s390.c
index f573df30f31..8e4e67503fe 100644
--- a/arch/s390/crypto/sha256_s390.c
+++ b/arch/s390/crypto/sha256_s390.c
@@ -127,6 +127,8 @@ static void sha256_final(struct crypto_tfm *tfm, u8 *out)
 
 static struct crypto_alg alg = {
 	.cra_name	=	"sha256",
+	.cra_driver_name =	"sha256-s390",
+	.cra_priority	=	CRYPT_S390_PRIORITY,
 	.cra_flags	=	CRYPTO_ALG_TYPE_DIGEST,
 	.cra_blocksize	=	SHA256_BLOCK_SIZE,
 	.cra_ctxsize	=	sizeof(struct s390_sha256_ctx),
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index f1d4591eddb..35da53986b1 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -428,6 +428,7 @@ CONFIG_S390_TAPE_34XX=m
 # CONFIG_VMLOGRDR is not set
 # CONFIG_VMCP is not set
 # CONFIG_MONREADER is not set
+CONFIG_MONWRITER=m
 
 #
 # Cryptographic devices
diff --git a/arch/s390/hypfs/hypfs.h b/arch/s390/hypfs/hypfs.h
index ea5567be00f..f3dbd91965c 100644
--- a/arch/s390/hypfs/hypfs.h
+++ b/arch/s390/hypfs/hypfs.h
@@ -1,5 +1,5 @@
 /*
- *  fs/hypfs/hypfs.h
+ *  arch/s390/hypfs/hypfs.h
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright (C) IBM Corp. 2006
diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 1785bce2b91..75144efbb92 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -1,5 +1,5 @@
 /*
- *  fs/hypfs/hypfs_diag.c
+ *  arch/s390/hypfs/hypfs_diag.c
  *    Hypervisor filesystem for Linux on s390. Diag 204 and 224
  *    implementation.
  *
@@ -432,12 +432,14 @@ static int diag204_probe(void)
 
 	buf = diag204_get_buffer(INFO_EXT, &pages);
 	if (!IS_ERR(buf)) {
-		if (diag204(SUBC_STIB7 | INFO_EXT, pages, buf) >= 0) {
+		if (diag204((unsigned long)SUBC_STIB7 |
+			    (unsigned long)INFO_EXT, pages, buf) >= 0) {
 			diag204_store_sc = SUBC_STIB7;
 			diag204_info_type = INFO_EXT;
 			goto out;
 		}
-		if (diag204(SUBC_STIB6 | INFO_EXT, pages, buf) >= 0) {
+		if (diag204((unsigned long)SUBC_STIB6 |
+			    (unsigned long)INFO_EXT, pages, buf) >= 0) {
 			diag204_store_sc = SUBC_STIB7;
 			diag204_info_type = INFO_EXT;
 			goto out;
@@ -452,7 +454,8 @@ static int diag204_probe(void)
 		rc = PTR_ERR(buf);
 		goto fail_alloc;
 	}
-	if (diag204(SUBC_STIB4 | INFO_SIMPLE, pages, buf) >= 0) {
+	if (diag204((unsigned long)SUBC_STIB4 |
+		    (unsigned long)INFO_SIMPLE, pages, buf) >= 0) {
 		diag204_store_sc = SUBC_STIB4;
 		diag204_info_type = INFO_SIMPLE;
 		goto out;
@@ -476,7 +479,8 @@ static void *diag204_store(void)
 	buf = diag204_get_buffer(diag204_info_type, &pages);
 	if (IS_ERR(buf))
 		goto out;
-	if (diag204(diag204_store_sc | diag204_info_type, pages, buf) < 0)
+	if (diag204((unsigned long)diag204_store_sc |
+		    (unsigned long)diag204_info_type, pages, buf) < 0)
 		return ERR_PTR(-ENOSYS);
 out:
 	return buf;
@@ -531,7 +535,7 @@ __init int hypfs_diag_init(void)
 	return rc;
 }
 
-__exit void hypfs_diag_exit(void)
+void hypfs_diag_exit(void)
 {
 	diag224_delete_name_table();
 	diag204_free_buffer();
diff --git a/arch/s390/hypfs/hypfs_diag.h b/arch/s390/hypfs/hypfs_diag.h
index 793dea6b9bb..256b384aebe 100644
--- a/arch/s390/hypfs/hypfs_diag.h
+++ b/arch/s390/hypfs/hypfs_diag.h
@@ -1,5 +1,5 @@
 /*
- *  fs/hypfs/hypfs_diag.h
+ *  arch/s390/hypfs_diag.h
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright (C) IBM Corp. 2006
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 18c091925ea..bdade5f2e32 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -1,5 +1,5 @@
 /*
- *  fs/hypfs/inode.c
+ *  arch/s390/hypfs/inode.c
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright (C) IBM Corp. 2006
@@ -312,10 +312,12 @@ static void hypfs_kill_super(struct super_block *sb)
 {
 	struct hypfs_sb_info *sb_info = sb->s_fs_info;
 
-	hypfs_delete_tree(sb->s_root);
-	hypfs_remove(sb_info->update_file);
-	kfree(sb->s_fs_info);
-	sb->s_fs_info = NULL;
+	if (sb->s_root) {
+		hypfs_delete_tree(sb->s_root);
+		hypfs_remove(sb_info->update_file);
+		kfree(sb->s_fs_info);
+		sb->s_fs_info = NULL;
+	}
 	kill_litter_super(sb);
 }
 
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 9a33ed6ca69..aa978978d3d 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -6,7 +6,7 @@ EXTRA_AFLAGS	:= -traditional
 
 obj-y	:=  bitmap.o traps.o time.o process.o \
             setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
-            semaphore.o s390_ext.o debug.o profile.o irq.o reipl_diag.o
+	    semaphore.o s390_ext.o debug.o profile.o irq.o ipl.o
 
 obj-y	+= $(if $(CONFIG_64BIT),entry64.o,entry.o)
 obj-y	+= $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
@@ -24,6 +24,7 @@ obj-$(CONFIG_COMPAT)		+= compat_linux.o compat_signal.o \
 
 obj-$(CONFIG_VIRT_TIMER)	+= vtime.o
 obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
+obj-$(CONFIG_KPROBES)		+= kprobes.o
 
 # Kexec part
 S390_KEXEC_OBJS := machine_kexec.o crash.o
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 5b5799ac8f8..0c712b78a7e 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -505,6 +505,8 @@ pgm_no_vtime2:
 	mvc	__THREAD_per+__PER_address(4,%r1),__LC_PER_ADDRESS
 	mvc	__THREAD_per+__PER_access_id(1,%r1),__LC_PER_ACCESS_ID
 	oi	__TI_flags+3(%r9),_TIF_SINGLE_STEP # set TIF_SINGLE_STEP
+	tm	SP_PSW+1(%r15),0x01	# kernel per event ?
+	bz	BASED(kernel_per)
 	l	%r3,__LC_PGM_ILC	 # load program interruption code
 	la	%r8,0x7f
 	nr	%r8,%r3                  # clear per-event-bit and ilc
@@ -536,6 +538,16 @@ pgm_no_vtime3:
 	stosm	__SF_EMPTY(%r15),0x03	# reenable interrupts
 	b	BASED(sysc_do_svc)
 
+#
+# per was called from kernel, must be kprobes
+#
+kernel_per:
+	mvi	SP_TRAP+1(%r15),0x28	# set trap indication to pgm check
+	la	%r2,SP_PTREGS(%r15)	# address of register-save area
+	l	%r1,BASED(.Lhandle_per)	# load adr. of per handler
+	la	%r14,BASED(sysc_leave)	# load adr. of system return
+	br	%r1			# branch to do_single_step
+
 /*
  * IO interrupt handler routine
  */
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 56f5f613b86..29bbfbab733 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -518,6 +518,8 @@ pgm_no_vtime2:
 #endif
 	lg	%r9,__LC_THREAD_INFO	# load pointer to thread_info struct
 	lg	%r1,__TI_task(%r9)
+	tm	SP_PSW+1(%r15),0x01	# kernel per event ?
+	jz	kernel_per
 	mvc	__THREAD_per+__PER_atmid(2,%r1),__LC_PER_ATMID
 	mvc	__THREAD_per+__PER_address(8,%r1),__LC_PER_ADDRESS
 	mvc	__THREAD_per+__PER_access_id(1,%r1),__LC_PER_ACCESS_ID
@@ -553,6 +555,16 @@ pgm_no_vtime3:
 	stosm	__SF_EMPTY(%r15),0x03	# reenable interrupts
 	j	sysc_do_svc
 
+#
+# per was called from kernel, must be kprobes
+#
+kernel_per:
+	lhi	%r0,__LC_PGM_OLD_PSW
+	sth	%r0,SP_TRAP(%r15)	# set trap indication to pgm check
+	la	%r2,SP_PTREGS(%r15)	# address of register-save area
+	larl	%r14,sysc_leave		# load adr. of system ret, no work
+	jg	do_single_step		# branch to do_single_step
+
 /*
  * IO interrupt handler routine
  */
@@ -815,7 +827,7 @@ restart_go:
  */
 stack_overflow:
 	lg	%r15,__LC_PANIC_STACK	# change to panic stack
-	aghi	%r1,-SP_SIZE
+	aghi	%r15,-SP_SIZE
 	mvc	SP_PSW(16,%r15),0(%r12)	# move user PSW to stack
 	stmg	%r0,%r11,SP_R0(%r15)	# store gprs %r0-%r11 to kernel stack
 	la	%r1,__LC_SAVE_AREA
@@ -823,7 +835,7 @@ stack_overflow:
 	je	0f
 	chi	%r12,__LC_PGM_OLD_PSW
 	je	0f
-	la	%r1,__LC_SAVE_AREA+16
+	la	%r1,__LC_SAVE_AREA+32
 0:	mvc	SP_R12(32,%r15),0(%r1)  # move %r12-%r15 to stack
         xc      __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) # clear back chain
         la      %r2,SP_PTREGS(%r15)	# load pt_regs
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index adad8863ee2..0f1db268a8a 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -272,7 +272,7 @@ iplstart:
 # load parameter file from ipl device
 #
 .Lagain1:
- 	l     %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # ramdisk loc. is temp
+	l     %r2,.Linitrd		       # ramdisk loc. is temp
         bas   %r14,.Lloader                    # load parameter file
         ltr   %r2,%r2                          # got anything ?
         bz    .Lnopf
@@ -280,7 +280,7 @@ iplstart:
 	bnh   .Lnotrunc
 	la    %r2,895
 .Lnotrunc:
-	l     %r4,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
+	l     %r4,.Linitrd
 	clc   0(3,%r4),.L_hdr		       # if it is HDRx
 	bz    .Lagain1			       # skip dataset header
 	clc   0(3,%r4),.L_eof		       # if it is EOFx
@@ -323,14 +323,15 @@ iplstart:
 # load ramdisk from ipl device
 #	
 .Lagain2:
- 	l     %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # addr of ramdisk
+	l     %r2,.Linitrd		       # addr of ramdisk
+	st    %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
         bas   %r14,.Lloader                    # load ramdisk
  	st    %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of ramdisk
         ltr   %r2,%r2
         bnz   .Lrdcont
         st    %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found
 .Lrdcont:
-	l     %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
+	l     %r2,.Linitrd
 
 	clc   0(3,%r2),.L_hdr		       # skip HDRx and EOFx 
 	bz    .Lagain2
@@ -379,6 +380,7 @@ iplstart:
         l     %r1,.Lstartup
         br    %r1
 
+.Linitrd:.long _end + 0x400000		       # default address of initrd
 .Lparm:	.long  PARMAREA
 .Lstartup: .long startup
 .Lcvtab:.long  _ebcasc                         # ebcdic to ascii table
@@ -479,65 +481,6 @@ start:
 	.byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7 
 	.byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
 
-.macro GET_IPL_DEVICE
-.Lget_ipl_device:
-	l     %r1,0xb8			# get sid
-	sll   %r1,15			# test if subchannel is enabled
-	srl   %r1,31
-	ltr   %r1,%r1
-	bz    2f-.LPG1(%r13)		# subchannel disabled
-	l     %r1,0xb8
-	la    %r5,.Lipl_schib-.LPG1(%r13)
-	stsch 0(%r5)		        # get schib of subchannel
-	bnz   2f-.LPG1(%r13)		# schib not available
-	tm    5(%r5),0x01		# devno valid?
-	bno   2f-.LPG1(%r13)
-	la    %r6,ipl_parameter_flags-.LPG1(%r13)
-	oi    3(%r6),0x01		# set flag
-	la    %r2,ipl_devno-.LPG1(%r13)
-	mvc   0(2,%r2),6(%r5)		# store devno
-	tm    4(%r5),0x80		# qdio capable device?
-	bno   2f-.LPG1(%r13)
-	oi    3(%r6),0x02		# set flag
-
-	# copy ipl parameters
-
-	lhi   %r0,4096
-	l     %r2,20(%r0)		# get address of parameter list
-	lhi   %r3,IPL_PARMBLOCK_ORIGIN
-	st    %r3,20(%r0)
-	lhi   %r4,1
-	cr    %r2,%r3			# start parameters < destination ?
-	jl    0f
-	lhi   %r1,1			# copy direction is upwards
-	j     1f
-0:	lhi   %r1,-1			# copy direction is downwards
-	ar    %r2,%r0
-	ar    %r3,%r0
-	ar    %r2,%r1
-	ar    %r3,%r1
-1:	mvc   0(1,%r3),0(%r2)		# finally copy ipl parameters
-	ar    %r3,%r1
-	ar    %r2,%r1
-	sr    %r0,%r4
-	jne   1b
-	b     2f-.LPG1(%r13)
-
-	.align 4
-.Lipl_schib:
-	.rept 13
-	.long 0
-	.endr
-
-	.globl ipl_parameter_flags
-ipl_parameter_flags:
-	.long 0
-	.globl ipl_devno
-ipl_devno:
-	.word 0
-2:
-.endm
-
 #ifdef CONFIG_64BIT
 #include "head64.S"
 #else
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index a4dc61f3285..1fa9fa1ca74 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -26,8 +26,8 @@ startup:basr	%r13,0			# get base
 #
 	.org	PARMAREA
 	.long	0,0			# IPL_DEVICE
-	.long	0,RAMDISK_ORIGIN	# INITRD_START
-	.long	0,RAMDISK_SIZE		# INITRD_SIZE
+	.long	0,0			# INITRD_START
+	.long	0,0			# INITRD_SIZE
 
 	.org	COMMAND_LINE
 	.byte	"root=/dev/ram0 ro"
@@ -37,12 +37,23 @@ startup:basr	%r13,0			# get base
 
 startup_continue:
 	basr	%r13,0			# get base
-.LPG1:	GET_IPL_DEVICE
+.LPG1:	mvi	__LC_AR_MODE_ID,0	# set ESA flag (mode 0)
 	lctl	%c0,%c15,.Lctl-.LPG1(%r13) # load control registers
 	l	%r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
 					# move IPL device to lowcore
 	mvc	__LC_IPLDEV(4),IPL_DEVICE-PARMAREA(%r12)
+#
+# Setup stack
+#
+	l	%r15,.Linittu-.LPG1(%r13)
+	mvc	__LC_CURRENT(4),__TI_task(%r15)
+	ahi	%r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
+	st	%r15,__LC_KERNEL_STACK	# set end of kernel stack
+	ahi	%r15,-96
+	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
 
+	l	%r14,.Lipl_save_parameters-.LPG1(%r13)
+	basr	%r14,%r14
 #
 # clear bss memory
 #
@@ -114,6 +125,10 @@ startup_continue:
 	b	.Lfchunk-.LPG1(%r13)
 
 	.align 4
+.Lipl_save_parameters:
+	.long	ipl_save_parameters
+.Linittu:
+	.long	init_thread_union
 .Lpmask:
 	.byte	0
 .align 8
@@ -273,7 +288,23 @@ startup_continue:
 .Lbss_end:  .long _end
 .Lparmaddr: .long PARMAREA
 .Lsccbaddr: .long .Lsccb
+
+	.globl ipl_schib
+ipl_schib:
+	.rept 13
+	.long 0
+	.endr
+
+	.globl ipl_flags
+ipl_flags:
+	.long 0
+	.globl ipl_devno
+ipl_devno:
+	.word 0
+
 	.org	0x12000
+.globl s390_readinfo_sccb
+s390_readinfo_sccb:
 .Lsccb:
 	.hword	0x1000			# length, one page
 	.byte	0x00,0x00,0x00
@@ -302,16 +333,6 @@ startup_continue:
 	.globl	_stext
 _stext:	basr	%r13,0			# get base
 .LPG3:
-#
-# Setup stack
-#
-	l	%r15,.Linittu-.LPG3(%r13)
-	mvc	__LC_CURRENT(4),__TI_task(%r15)
-	ahi	%r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
-	st	%r15,__LC_KERNEL_STACK	# set end of kernel stack
-	ahi	%r15,-96
-	xc	__SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
-
 # check control registers
 	stctl	%c0,%c15,0(%r15)
 	oi	2(%r15),0x40		# enable sigp emergency signal
@@ -330,6 +351,5 @@ _stext:	basr	%r13,0			# get base
 #
 	.align	8
 .Ldw:	.long	0x000a0000,0x00000000
-.Linittu:.long	init_thread_union
 .Lstart:.long	start_kernel
 .Laregs:.long	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 9d80c5b1ef9..a8bdd96494c 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -26,8 +26,8 @@ startup:basr  %r13,0			 # get base
 #
 	.org   PARMAREA
 	.quad  0			# IPL_DEVICE
-	.quad  RAMDISK_ORIGIN		# INITRD_START
-	.quad  RAMDISK_SIZE		# INITRD_SIZE
+	.quad  0			# INITRD_START
+	.quad  0			# INITRD_SIZE
 
 	.org   COMMAND_LINE
 	.byte  "root=/dev/ram0 ro"
@@ -39,8 +39,8 @@ startup_continue:
 	basr  %r13,0			 # get base
 .LPG1:  sll   %r13,1                     # remove high order bit
         srl   %r13,1
-	GET_IPL_DEVICE
         lhi   %r1,1                      # mode 1 = esame
+	mvi   __LC_AR_MODE_ID,1		 # set esame flag
         slr   %r0,%r0                    # set cpuid to zero
         sigp  %r1,%r0,0x12               # switch to esame mode
 	sam64				 # switch to 64 bit mode
@@ -48,7 +48,18 @@ startup_continue:
 	lg    %r12,.Lparmaddr-.LPG1(%r13)# pointer to parameter area
 					 # move IPL device to lowcore
         mvc   __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12)
+#
+# Setup stack
+#
+	larl  %r15,init_thread_union
+	lg    %r14,__TI_task(%r15)	# cache current in lowcore
+	stg   %r14,__LC_CURRENT
+	aghi  %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
+	stg   %r15,__LC_KERNEL_STACK	# set end of kernel stack
+	aghi  %r15,-160
+	xc    __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
 
+	brasl %r14,ipl_save_parameters
 #
 # clear bss memory
 #
@@ -239,6 +250,19 @@ startup_continue:
 	oi	7(%r12),0x80		# set IDTE flag
 0:
 
+#
+# find out if we have the MVCOS instruction
+#
+	la	%r1,0f-.LPG1(%r13)	# set program check address
+	stg	%r1,__LC_PGM_NEW_PSW+8
+	.short	0xc800			# mvcos 0(%r0),0(%r0),%r0
+	.short	0x0000
+	.short	0x0000
+0:	tm	0x8f,0x13		# special-operation exception?
+	bno	1f-.LPG1(%r13)		# if yes, MVCOS is present
+	oi	6(%r12),2		# set MVCOS flag
+1:
+
         lpswe .Lentry-.LPG1(13)         # jump to _stext in primary-space,
                                         # virtual and never return ...
         .align 16
@@ -268,7 +292,22 @@ startup_continue:
 .Lparmaddr:
 	.quad	PARMAREA
 
+	.globl ipl_schib
+ipl_schib:
+	.rept 13
+	.long 0
+	.endr
+
+	.globl ipl_flags
+ipl_flags:
+	.long 0
+	.globl ipl_devno
+ipl_devno:
+	.word 0
+
 	.org	0x12000
+.globl s390_readinfo_sccb
+s390_readinfo_sccb:
 .Lsccb:
 	.hword 0x1000			# length, one page
 	.byte 0x00,0x00,0x00
@@ -297,24 +336,12 @@ startup_continue:
         .globl _stext
 _stext:	basr  %r13,0                    # get base
 .LPG3:
-#
-# Setup stack
-#
-	larl  %r15,init_thread_union
-	lg    %r14,__TI_task(%r15)      # cache current in lowcore
-	stg   %r14,__LC_CURRENT
-        aghi  %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
-        stg   %r15,__LC_KERNEL_STACK    # set end of kernel stack
-        aghi  %r15,-160
-        xc    __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
-
 # check control registers
         stctg  %c0,%c15,0(%r15)
 	oi     6(%r15),0x40             # enable sigp emergency signal
 	oi     4(%r15),0x10             # switch on low address proctection
         lctlg  %c0,%c15,0(%r15)
 
-#
         lam    0,15,.Laregs-.LPG3(%r13) # load access regs needed by uaccess
         brasl  %r14,start_kernel        # go to C code
 #
@@ -322,7 +349,7 @@ _stext:	basr  %r13,0                    # get base
 #
         basr  %r13,0
 	lpswe .Ldw-.(%r13)           # load disabled wait psw
-#
+
             .align 8
 .Ldw:       .quad  0x0002000180000000,0x0000000000000000
 .Laregs:    .long  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
new file mode 100644
index 00000000000..6555cc48e28
--- /dev/null
+++ b/arch/s390/kernel/ipl.c
@@ -0,0 +1,942 @@
+/*
+ *  arch/s390/kernel/ipl.c
+ *    ipl/reipl/dump support for Linux on s390.
+ *
+ *    Copyright (C) IBM Corp. 2005,2006
+ *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
+ *		 Heiko Carstens <heiko.carstens@de.ibm.com>
+ *		 Volker Sameske <sameske@de.ibm.com>
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/reboot.h>
+#include <asm/smp.h>
+#include <asm/setup.h>
+#include <asm/cpcmd.h>
+#include <asm/cio.h>
+
+#define IPL_PARM_BLOCK_VERSION 0
+
+enum ipl_type {
+	IPL_TYPE_NONE	 = 1,
+	IPL_TYPE_UNKNOWN = 2,
+	IPL_TYPE_CCW	 = 4,
+	IPL_TYPE_FCP	 = 8,
+};
+
+#define IPL_NONE_STR	 "none"
+#define IPL_UNKNOWN_STR  "unknown"
+#define IPL_CCW_STR	 "ccw"
+#define IPL_FCP_STR	 "fcp"
+
+static char *ipl_type_str(enum ipl_type type)
+{
+	switch (type) {
+	case IPL_TYPE_NONE:
+		return IPL_NONE_STR;
+	case IPL_TYPE_CCW:
+		return IPL_CCW_STR;
+	case IPL_TYPE_FCP:
+		return IPL_FCP_STR;
+	case IPL_TYPE_UNKNOWN:
+	default:
+		return IPL_UNKNOWN_STR;
+	}
+}
+
+enum ipl_method {
+	IPL_METHOD_NONE,
+	IPL_METHOD_CCW_CIO,
+	IPL_METHOD_CCW_DIAG,
+	IPL_METHOD_CCW_VM,
+	IPL_METHOD_FCP_RO_DIAG,
+	IPL_METHOD_FCP_RW_DIAG,
+	IPL_METHOD_FCP_RO_VM,
+};
+
+enum shutdown_action {
+	SHUTDOWN_REIPL,
+	SHUTDOWN_DUMP,
+	SHUTDOWN_STOP,
+};
+
+#define SHUTDOWN_REIPL_STR "reipl"
+#define SHUTDOWN_DUMP_STR  "dump"
+#define SHUTDOWN_STOP_STR  "stop"
+
+static char *shutdown_action_str(enum shutdown_action action)
+{
+	switch (action) {
+	case SHUTDOWN_REIPL:
+		return SHUTDOWN_REIPL_STR;
+	case SHUTDOWN_DUMP:
+		return SHUTDOWN_DUMP_STR;
+	case SHUTDOWN_STOP:
+		return SHUTDOWN_STOP_STR;
+	default:
+		BUG();
+	}
+}
+
+enum diag308_subcode  {
+	DIAG308_IPL   = 3,
+	DIAG308_DUMP  = 4,
+	DIAG308_SET   = 5,
+	DIAG308_STORE = 6,
+};
+
+enum diag308_ipl_type {
+	DIAG308_IPL_TYPE_FCP = 0,
+	DIAG308_IPL_TYPE_CCW = 2,
+};
+
+enum diag308_opt {
+	DIAG308_IPL_OPT_IPL  = 0x10,
+	DIAG308_IPL_OPT_DUMP = 0x20,
+};
+
+enum diag308_rc {
+	DIAG308_RC_OK = 1,
+};
+
+static int diag308_set_works = 0;
+
+static int reipl_capabilities = IPL_TYPE_UNKNOWN;
+static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
+static enum ipl_method reipl_method = IPL_METHOD_NONE;
+static struct ipl_parameter_block *reipl_block_fcp;
+static struct ipl_parameter_block *reipl_block_ccw;
+
+static int dump_capabilities = IPL_TYPE_NONE;
+static enum ipl_type dump_type = IPL_TYPE_NONE;
+static enum ipl_method dump_method = IPL_METHOD_NONE;
+static struct ipl_parameter_block *dump_block_fcp;
+static struct ipl_parameter_block *dump_block_ccw;
+
+static enum shutdown_action on_panic_action = SHUTDOWN_STOP;
+
+static int diag308(unsigned long subcode, void *addr)
+{
+	register unsigned long _addr asm("0") = (unsigned long)addr;
+	register unsigned long _rc asm("1") = 0;
+
+	asm volatile (
+		"   diag %0,%2,0x308\n"
+		"0: \n"
+		".section __ex_table,\"a\"\n"
+#ifdef CONFIG_64BIT
+		"   .align 8\n"
+		"   .quad 0b, 0b\n"
+#else
+		"   .align 4\n"
+		"   .long 0b, 0b\n"
+#endif
+		".previous\n"
+		: "+d" (_addr), "+d" (_rc)
+		: "d" (subcode) : "cc", "memory" );
+
+	return _rc;
+}
+
+/* SYSFS */
+
+#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value)		\
+static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys,	\
+		char *page)						\
+{									\
+	return sprintf(page, _format, _value);				\
+}									\
+static struct subsys_attribute sys_##_prefix##_##_name##_attr =		\
+	__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL);
+
+#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)	\
+static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys,	\
+		char *page)						\
+{									\
+	return sprintf(page, _fmt_out,					\
+			(unsigned long long) _value);			\
+}									\
+static ssize_t sys_##_prefix##_##_name##_store(struct subsystem *subsys,\
+		const char *buf, size_t len)				\
+{									\
+	unsigned long long value;					\
+	if (sscanf(buf, _fmt_in, &value) != 1)				\
+		return -EINVAL;						\
+	_value = value;							\
+	return len;							\
+}									\
+static struct subsys_attribute sys_##_prefix##_##_name##_attr =		\
+	__ATTR(_name,(S_IRUGO | S_IWUSR),				\
+			sys_##_prefix##_##_name##_show,			\
+			sys_##_prefix##_##_name##_store);
+
+static void make_attrs_ro(struct attribute **attrs)
+{
+	while (*attrs) {
+		(*attrs)->mode = S_IRUGO;
+		attrs++;
+	}
+}
+
+/*
+ * ipl section
+ */
+
+static enum ipl_type ipl_get_type(void)
+{
+	struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
+
+	if (!(ipl_flags & IPL_DEVNO_VALID))
+		return IPL_TYPE_UNKNOWN;
+	if (!(ipl_flags & IPL_PARMBLOCK_VALID))
+		return IPL_TYPE_CCW;
+	if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION)
+		return IPL_TYPE_UNKNOWN;
+	if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP)
+		return IPL_TYPE_UNKNOWN;
+	return IPL_TYPE_FCP;
+}
+
+static ssize_t ipl_type_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%s\n", ipl_type_str(ipl_get_type()));
+}
+
+static struct subsys_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
+
+static ssize_t sys_ipl_device_show(struct subsystem *subsys, char *page)
+{
+	struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
+
+	switch (ipl_get_type()) {
+	case IPL_TYPE_CCW:
+		return sprintf(page, "0.0.%04x\n", ipl_devno);
+	case IPL_TYPE_FCP:
+		return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno);
+	default:
+		return 0;
+	}
+}
+
+static struct subsys_attribute sys_ipl_device_attr =
+	__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
+
+static ssize_t ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off,
+				  size_t count)
+{
+	unsigned int size = IPL_PARMBLOCK_SIZE;
+
+	if (off > size)
+		return 0;
+	if (off + count > size)
+		count = size - off;
+	memcpy(buf, (void *)IPL_PARMBLOCK_START + off, count);
+	return count;
+}
+
+static struct bin_attribute ipl_parameter_attr = {
+	.attr = {
+		.name = "binary_parameter",
+		.mode = S_IRUGO,
+		.owner = THIS_MODULE,
+	},
+	.size = PAGE_SIZE,
+	.read = &ipl_parameter_read,
+};
+
+static ssize_t ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off,
+	size_t count)
+{
+	unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len;
+	void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data;
+
+	if (off > size)
+		return 0;
+	if (off + count > size)
+		count = size - off;
+	memcpy(buf, scp_data + off, count);
+	return count;
+}
+
+static struct bin_attribute ipl_scp_data_attr = {
+	.attr = {
+		.name = "scp_data",
+		.mode = S_IRUGO,
+		.owner = THIS_MODULE,
+	},
+	.size = PAGE_SIZE,
+	.read = &ipl_scp_data_read,
+};
+
+/* FCP ipl device attributes */
+
+DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long)
+		   IPL_PARMBLOCK_START->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long)
+		   IPL_PARMBLOCK_START->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long)
+		   IPL_PARMBLOCK_START->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long)
+		   IPL_PARMBLOCK_START->ipl_info.fcp.br_lba);
+
+static struct attribute *ipl_fcp_attrs[] = {
+	&sys_ipl_type_attr.attr,
+	&sys_ipl_device_attr.attr,
+	&sys_ipl_fcp_wwpn_attr.attr,
+	&sys_ipl_fcp_lun_attr.attr,
+	&sys_ipl_fcp_bootprog_attr.attr,
+	&sys_ipl_fcp_br_lba_attr.attr,
+	NULL,
+};
+
+static struct attribute_group ipl_fcp_attr_group = {
+	.attrs = ipl_fcp_attrs,
+};
+
+/* CCW ipl device attributes */
+
+static struct attribute *ipl_ccw_attrs[] = {
+	&sys_ipl_type_attr.attr,
+	&sys_ipl_device_attr.attr,
+	NULL,
+};
+
+static struct attribute_group ipl_ccw_attr_group = {
+	.attrs = ipl_ccw_attrs,
+};
+
+/* UNKNOWN ipl device attributes */
+
+static struct attribute *ipl_unknown_attrs[] = {
+	&sys_ipl_type_attr.attr,
+	NULL,
+};
+
+static struct attribute_group ipl_unknown_attr_group = {
+	.attrs = ipl_unknown_attrs,
+};
+
+static decl_subsys(ipl, NULL, NULL);
+
+/*
+ * reipl section
+ */
+
+/* FCP reipl device attributes */
+
+DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n",
+		   reipl_block_fcp->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n",
+		   reipl_block_fcp->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
+		   reipl_block_fcp->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
+		   reipl_block_fcp->ipl_info.fcp.br_lba);
+DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
+		   reipl_block_fcp->ipl_info.fcp.devno);
+
+static struct attribute *reipl_fcp_attrs[] = {
+	&sys_reipl_fcp_device_attr.attr,
+	&sys_reipl_fcp_wwpn_attr.attr,
+	&sys_reipl_fcp_lun_attr.attr,
+	&sys_reipl_fcp_bootprog_attr.attr,
+	&sys_reipl_fcp_br_lba_attr.attr,
+	NULL,
+};
+
+static struct attribute_group reipl_fcp_attr_group = {
+	.name  = IPL_FCP_STR,
+	.attrs = reipl_fcp_attrs,
+};
+
+/* CCW reipl device attributes */
+
+DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
+	reipl_block_ccw->ipl_info.ccw.devno);
+
+static struct attribute *reipl_ccw_attrs[] = {
+	&sys_reipl_ccw_device_attr.attr,
+	NULL,
+};
+
+static struct attribute_group reipl_ccw_attr_group = {
+	.name  = IPL_CCW_STR,
+	.attrs = reipl_ccw_attrs,
+};
+
+/* reipl type */
+
+static int reipl_set_type(enum ipl_type type)
+{
+	if (!(reipl_capabilities & type))
+		return -EINVAL;
+
+	switch(type) {
+	case IPL_TYPE_CCW:
+		if (MACHINE_IS_VM)
+			reipl_method = IPL_METHOD_CCW_VM;
+		else
+			reipl_method = IPL_METHOD_CCW_CIO;
+		break;
+	case IPL_TYPE_FCP:
+		if (diag308_set_works)
+			reipl_method = IPL_METHOD_FCP_RW_DIAG;
+		else if (MACHINE_IS_VM)
+			reipl_method = IPL_METHOD_FCP_RO_VM;
+		else
+			reipl_method = IPL_METHOD_FCP_RO_DIAG;
+		break;
+	default:
+		reipl_method = IPL_METHOD_NONE;
+	}
+	reipl_type = type;
+	return 0;
+}
+
+static ssize_t reipl_type_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%s\n", ipl_type_str(reipl_type));
+}
+
+static ssize_t reipl_type_store(struct subsystem *subsys, const char *buf,
+				size_t len)
+{
+	int rc = -EINVAL;
+
+	if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
+		rc = reipl_set_type(IPL_TYPE_CCW);
+	else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
+		rc = reipl_set_type(IPL_TYPE_FCP);
+	return (rc != 0) ? rc : len;
+}
+
+static struct subsys_attribute reipl_type_attr =
+		__ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
+
+static decl_subsys(reipl, NULL, NULL);
+
+/*
+ * dump section
+ */
+
+/* FCP dump device attributes */
+
+DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n",
+		   dump_block_fcp->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n",
+		   dump_block_fcp->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
+		   dump_block_fcp->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
+		   dump_block_fcp->ipl_info.fcp.br_lba);
+DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
+		   dump_block_fcp->ipl_info.fcp.devno);
+
+static struct attribute *dump_fcp_attrs[] = {
+	&sys_dump_fcp_device_attr.attr,
+	&sys_dump_fcp_wwpn_attr.attr,
+	&sys_dump_fcp_lun_attr.attr,
+	&sys_dump_fcp_bootprog_attr.attr,
+	&sys_dump_fcp_br_lba_attr.attr,
+	NULL,
+};
+
+static struct attribute_group dump_fcp_attr_group = {
+	.name  = IPL_FCP_STR,
+	.attrs = dump_fcp_attrs,
+};
+
+/* CCW dump device attributes */
+
+DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
+		   dump_block_ccw->ipl_info.ccw.devno);
+
+static struct attribute *dump_ccw_attrs[] = {
+	&sys_dump_ccw_device_attr.attr,
+	NULL,
+};
+
+static struct attribute_group dump_ccw_attr_group = {
+	.name  = IPL_CCW_STR,
+	.attrs = dump_ccw_attrs,
+};
+
+/* dump type */
+
+static int dump_set_type(enum ipl_type type)
+{
+	if (!(dump_capabilities & type))
+		return -EINVAL;
+	switch(type) {
+	case IPL_TYPE_CCW:
+		if (MACHINE_IS_VM)
+			dump_method = IPL_METHOD_CCW_VM;
+		else
+			dump_method = IPL_METHOD_CCW_CIO;
+		break;
+	case IPL_TYPE_FCP:
+		dump_method = IPL_METHOD_FCP_RW_DIAG;
+		break;
+	default:
+		dump_method = IPL_METHOD_NONE;
+	}
+	dump_type = type;
+	return 0;
+}
+
+static ssize_t dump_type_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%s\n", ipl_type_str(dump_type));
+}
+
+static ssize_t dump_type_store(struct subsystem *subsys, const char *buf,
+			       size_t len)
+{
+	int rc = -EINVAL;
+
+	if (strncmp(buf, IPL_NONE_STR, strlen(IPL_NONE_STR)) == 0)
+		rc = dump_set_type(IPL_TYPE_NONE);
+	else if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
+		rc = dump_set_type(IPL_TYPE_CCW);
+	else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
+		rc = dump_set_type(IPL_TYPE_FCP);
+	return (rc != 0) ? rc : len;
+}
+
+static struct subsys_attribute dump_type_attr =
+		__ATTR(dump_type, 0644, dump_type_show, dump_type_store);
+
+static decl_subsys(dump, NULL, NULL);
+
+#ifdef CONFIG_SMP
+static void dump_smp_stop_all(void)
+{
+	int cpu;
+	preempt_disable();
+	for_each_online_cpu(cpu) {
+		if (cpu == smp_processor_id())
+			continue;
+		while (signal_processor(cpu, sigp_stop) == sigp_busy)
+			udelay(10);
+	}
+	preempt_enable();
+}
+#else
+#define dump_smp_stop_all() do { } while (0)
+#endif
+
+/*
+ * Shutdown actions section
+ */
+
+static decl_subsys(shutdown_actions, NULL, NULL);
+
+/* on panic */
+
+static ssize_t on_panic_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%s\n", shutdown_action_str(on_panic_action));
+}
+
+static ssize_t on_panic_store(struct subsystem *subsys, const char *buf,
+			      size_t len)
+{
+	if (strncmp(buf, SHUTDOWN_REIPL_STR, strlen(SHUTDOWN_REIPL_STR)) == 0)
+		on_panic_action = SHUTDOWN_REIPL;
+	else if (strncmp(buf, SHUTDOWN_DUMP_STR,
+			 strlen(SHUTDOWN_DUMP_STR)) == 0)
+		on_panic_action = SHUTDOWN_DUMP;
+	else if (strncmp(buf, SHUTDOWN_STOP_STR,
+			 strlen(SHUTDOWN_STOP_STR)) == 0)
+		on_panic_action = SHUTDOWN_STOP;
+	else
+		return -EINVAL;
+
+	return len;
+}
+
+static struct subsys_attribute on_panic_attr =
+		__ATTR(on_panic, 0644, on_panic_show, on_panic_store);
+
+static void print_fcp_block(struct ipl_parameter_block *fcp_block)
+{
+	printk(KERN_EMERG "wwpn:      %016llx\n",
+		(unsigned long long)fcp_block->ipl_info.fcp.wwpn);
+	printk(KERN_EMERG "lun:       %016llx\n",
+		(unsigned long long)fcp_block->ipl_info.fcp.lun);
+	printk(KERN_EMERG "bootprog:  %lld\n",
+		(unsigned long long)fcp_block->ipl_info.fcp.bootprog);
+	printk(KERN_EMERG "br_lba:    %lld\n",
+		(unsigned long long)fcp_block->ipl_info.fcp.br_lba);
+	printk(KERN_EMERG "device:    %llx\n",
+		(unsigned long long)fcp_block->ipl_info.fcp.devno);
+	printk(KERN_EMERG "opt:       %x\n", fcp_block->ipl_info.fcp.opt);
+}
+
+void do_reipl(void)
+{
+	struct ccw_dev_id devid;
+	static char buf[100];
+
+	switch (reipl_type) {
+	case IPL_TYPE_CCW:
+		printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n",
+			reipl_block_ccw->ipl_info.ccw.devno);
+		break;
+	case IPL_TYPE_FCP:
+		printk(KERN_EMERG "reboot on fcp device:\n");
+		print_fcp_block(reipl_block_fcp);
+		break;
+	default:
+		break;
+	}
+
+	switch (reipl_method) {
+	case IPL_METHOD_CCW_CIO:
+		devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
+		devid.ssid  = 0;
+		reipl_ccw_dev(&devid);
+		break;
+	case IPL_METHOD_CCW_VM:
+		sprintf(buf, "IPL %X", reipl_block_ccw->ipl_info.ccw.devno);
+		cpcmd(buf, NULL, 0, NULL);
+		break;
+	case IPL_METHOD_CCW_DIAG:
+		diag308(DIAG308_SET, reipl_block_ccw);
+		diag308(DIAG308_IPL, NULL);
+		break;
+	case IPL_METHOD_FCP_RW_DIAG:
+		diag308(DIAG308_SET, reipl_block_fcp);
+		diag308(DIAG308_IPL, NULL);
+		break;
+	case IPL_METHOD_FCP_RO_DIAG:
+		diag308(DIAG308_IPL, NULL);
+		break;
+	case IPL_METHOD_FCP_RO_VM:
+		cpcmd("IPL", NULL, 0, NULL);
+		break;
+	case IPL_METHOD_NONE:
+	default:
+		if (MACHINE_IS_VM)
+			cpcmd("IPL", NULL, 0, NULL);
+		diag308(DIAG308_IPL, NULL);
+		break;
+	}
+	panic("reipl failed!\n");
+}
+
+static void do_dump(void)
+{
+	struct ccw_dev_id devid;
+	static char buf[100];
+
+	switch (dump_type) {
+	case IPL_TYPE_CCW:
+		printk(KERN_EMERG "Automatic dump on ccw device: 0.0.%04x\n",
+		       dump_block_ccw->ipl_info.ccw.devno);
+		break;
+	case IPL_TYPE_FCP:
+		printk(KERN_EMERG "Automatic dump on fcp device:\n");
+		print_fcp_block(dump_block_fcp);
+		break;
+	default:
+		return;
+	}
+
+	switch (dump_method) {
+	case IPL_METHOD_CCW_CIO:
+		dump_smp_stop_all();
+		devid.devno = dump_block_ccw->ipl_info.ccw.devno;
+		devid.ssid  = 0;
+		reipl_ccw_dev(&devid);
+		break;
+	case IPL_METHOD_CCW_VM:
+		dump_smp_stop_all();
+		sprintf(buf, "STORE STATUS");
+		cpcmd(buf, NULL, 0, NULL);
+		sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
+		cpcmd(buf, NULL, 0, NULL);
+		break;
+	case IPL_METHOD_CCW_DIAG:
+		diag308(DIAG308_SET, dump_block_ccw);
+		diag308(DIAG308_DUMP, NULL);
+		break;
+	case IPL_METHOD_FCP_RW_DIAG:
+		diag308(DIAG308_SET, dump_block_fcp);
+		diag308(DIAG308_DUMP, NULL);
+		break;
+	case IPL_METHOD_NONE:
+	default:
+		return;
+	}
+	printk(KERN_EMERG "Dump failed!\n");
+}
+
+/* init functions */
+
+static int __init ipl_register_fcp_files(void)
+{
+	int rc;
+
+	rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+				&ipl_fcp_attr_group);
+	if (rc)
+		goto out;
+	rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+				   &ipl_parameter_attr);
+	if (rc)
+		goto out_ipl_parm;
+	rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+				   &ipl_scp_data_attr);
+	if (!rc)
+		goto out;
+
+	sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
+
+out_ipl_parm:
+	sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
+out:
+	return rc;
+}
+
+static int __init ipl_init(void)
+{
+	int rc;
+
+	rc = firmware_register(&ipl_subsys);
+	if (rc)
+		return rc;
+	switch (ipl_get_type()) {
+	case IPL_TYPE_CCW:
+		rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+					&ipl_ccw_attr_group);
+		break;
+	case IPL_TYPE_FCP:
+		rc = ipl_register_fcp_files();
+		break;
+	default:
+		rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+					&ipl_unknown_attr_group);
+		break;
+	}
+	if (rc)
+		firmware_unregister(&ipl_subsys);
+	return rc;
+}
+
+static void __init reipl_probe(void)
+{
+	void *buffer;
+
+	buffer = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!buffer)
+		return;
+	if (diag308(DIAG308_STORE, buffer) == DIAG308_RC_OK)
+		diag308_set_works = 1;
+	free_page((unsigned long)buffer);
+}
+
+static int __init reipl_ccw_init(void)
+{
+	int rc;
+
+	reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!reipl_block_ccw)
+		return -ENOMEM;
+	rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_ccw_attr_group);
+	if (rc) {
+		free_page((unsigned long)reipl_block_ccw);
+		return rc;
+	}
+	reipl_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
+	reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
+	reipl_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
+	reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+	if (ipl_get_type() == IPL_TYPE_CCW)
+		reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
+	reipl_capabilities |= IPL_TYPE_CCW;
+	return 0;
+}
+
+static int __init reipl_fcp_init(void)
+{
+	int rc;
+
+	if ((!diag308_set_works) && (ipl_get_type() != IPL_TYPE_FCP))
+		return 0;
+	if ((!diag308_set_works) && (ipl_get_type() == IPL_TYPE_FCP))
+		make_attrs_ro(reipl_fcp_attrs);
+
+	reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!reipl_block_fcp)
+		return -ENOMEM;
+	rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_fcp_attr_group);
+	if (rc) {
+		free_page((unsigned long)reipl_block_fcp);
+		return rc;
+	}
+	if (ipl_get_type() == IPL_TYPE_FCP) {
+		memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE);
+	} else {
+		reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
+		reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
+		reipl_block_fcp->hdr.blk0_len =
+			sizeof(reipl_block_fcp->ipl_info.fcp);
+		reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
+		reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL;
+	}
+	reipl_capabilities |= IPL_TYPE_FCP;
+	return 0;
+}
+
+static int __init reipl_init(void)
+{
+	int rc;
+
+	rc = firmware_register(&reipl_subsys);
+	if (rc)
+		return rc;
+	rc = subsys_create_file(&reipl_subsys, &reipl_type_attr);
+	if (rc) {
+		firmware_unregister(&reipl_subsys);
+		return rc;
+	}
+	rc = reipl_ccw_init();
+	if (rc)
+		return rc;
+	rc = reipl_fcp_init();
+	if (rc)
+		return rc;
+	rc = reipl_set_type(ipl_get_type());
+	if (rc)
+		return rc;
+	return 0;
+}
+
+static int __init dump_ccw_init(void)
+{
+	int rc;
+
+	dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!dump_block_ccw)
+		return -ENOMEM;
+	rc = sysfs_create_group(&dump_subsys.kset.kobj, &dump_ccw_attr_group);
+	if (rc) {
+		free_page((unsigned long)dump_block_ccw);
+		return rc;
+	}
+	dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
+	dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
+	dump_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
+	dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+	dump_capabilities |= IPL_TYPE_CCW;
+	return 0;
+}
+
+extern char s390_readinfo_sccb[];
+
+static int __init dump_fcp_init(void)
+{
+	int rc;
+
+	if(!(s390_readinfo_sccb[91] & 0x2))
+		return 0; /* LDIPL DUMP is not installed */
+	if (!diag308_set_works)
+		return 0;
+	dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
+	if (!dump_block_fcp)
+		return -ENOMEM;
+	rc = sysfs_create_group(&dump_subsys.kset.kobj, &dump_fcp_attr_group);
+	if (rc) {
+		free_page((unsigned long)dump_block_fcp);
+		return rc;
+	}
+	dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
+	dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
+	dump_block_fcp->hdr.blk0_len = sizeof(dump_block_fcp->ipl_info.fcp);
+	dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
+	dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP;
+	dump_capabilities |= IPL_TYPE_FCP;
+	return 0;
+}
+
+#define SHUTDOWN_ON_PANIC_PRIO 0
+
+static int shutdown_on_panic_notify(struct notifier_block *self,
+				    unsigned long event, void *data)
+{
+	if (on_panic_action == SHUTDOWN_DUMP)
+		do_dump();
+	else if (on_panic_action == SHUTDOWN_REIPL)
+		do_reipl();
+	return NOTIFY_OK;
+}
+
+static struct notifier_block shutdown_on_panic_nb = {
+	.notifier_call = shutdown_on_panic_notify,
+	.priority = SHUTDOWN_ON_PANIC_PRIO
+};
+
+static int __init dump_init(void)
+{
+	int rc;
+
+	rc = firmware_register(&dump_subsys);
+	if (rc)
+		return rc;
+	rc = subsys_create_file(&dump_subsys, &dump_type_attr);
+	if (rc) {
+		firmware_unregister(&dump_subsys);
+		return rc;
+	}
+	rc = dump_ccw_init();
+	if (rc)
+		return rc;
+	rc = dump_fcp_init();
+	if (rc)
+		return rc;
+	dump_set_type(IPL_TYPE_NONE);
+	return 0;
+}
+
+static int __init shutdown_actions_init(void)
+{
+	int rc;
+
+	rc = firmware_register(&shutdown_actions_subsys);
+	if (rc)
+		return rc;
+	rc = subsys_create_file(&shutdown_actions_subsys, &on_panic_attr);
+	if (rc) {
+		firmware_unregister(&shutdown_actions_subsys);
+		return rc;
+	}
+	atomic_notifier_chain_register(&panic_notifier_list,
+				       &shutdown_on_panic_nb);
+	return 0;
+}
+
+static int __init s390_ipl_init(void)
+{
+	int rc;
+
+	reipl_probe();
+	rc = ipl_init();
+	if (rc)
+		return rc;
+	rc = reipl_init();
+	if (rc)
+		return rc;
+	rc = dump_init();
+	if (rc)
+		return rc;
+	rc = shutdown_actions_init();
+	if (rc)
+		return rc;
+	return 0;
+}
+
+__initcall(s390_ipl_init);
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
new file mode 100644
index 00000000000..ca28fb0b379
--- /dev/null
+++ b/arch/s390/kernel/kprobes.c
@@ -0,0 +1,657 @@
+/*
+ *  Kernel Probes (KProbes)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2002, 2006
+ *
+ * s390 port, used ppc64 as template. Mike Grundy <grundym@us.ibm.com>
+ */
+
+#include <linux/config.h>
+#include <linux/kprobes.h>
+#include <linux/ptrace.h>
+#include <linux/preempt.h>
+#include <linux/stop_machine.h>
+#include <asm/cacheflush.h>
+#include <asm/kdebug.h>
+#include <asm/sections.h>
+#include <asm/uaccess.h>
+#include <linux/module.h>
+
+DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
+DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
+int __kprobes arch_prepare_kprobe(struct kprobe *p)
+{
+	/* Make sure the probe isn't going on a difficult instruction */
+	if (is_prohibited_opcode((kprobe_opcode_t *) p->addr))
+		return -EINVAL;
+
+	if ((unsigned long)p->addr & 0x01) {
+		printk("Attempt to register kprobe at an unaligned address\n");
+		return -EINVAL;
+		}
+
+	/* Use the get_insn_slot() facility for correctness */
+	if (!(p->ainsn.insn = get_insn_slot()))
+		return -ENOMEM;
+
+	memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
+
+	get_instruction_type(&p->ainsn);
+	p->opcode = *p->addr;
+	return 0;
+}
+
+int __kprobes is_prohibited_opcode(kprobe_opcode_t *instruction)
+{
+	switch (*(__u8 *) instruction) {
+	case 0x0c:	/* bassm */
+	case 0x0b:	/* bsm	 */
+	case 0x83:	/* diag  */
+	case 0x44:	/* ex	 */
+		return -EINVAL;
+	}
+	switch (*(__u16 *) instruction) {
+	case 0x0101:	/* pr	 */
+	case 0xb25a:	/* bsa	 */
+	case 0xb240:	/* bakr  */
+	case 0xb258:	/* bsg	 */
+	case 0xb218:	/* pc	 */
+	case 0xb228:	/* pt	 */
+		return -EINVAL;
+	}
+	return 0;
+}
+
+void __kprobes get_instruction_type(struct arch_specific_insn *ainsn)
+{
+	/* default fixup method */
+	ainsn->fixup = FIXUP_PSW_NORMAL;
+
+	/* save r1 operand */
+	ainsn->reg = (*ainsn->insn & 0xf0) >> 4;
+
+	/* save the instruction length (pop 5-5) in bytes */
+	switch (*(__u8 *) (ainsn->insn) >> 4) {
+	case 0:
+		ainsn->ilen = 2;
+		break;
+	case 1:
+	case 2:
+		ainsn->ilen = 4;
+		break;
+	case 3:
+		ainsn->ilen = 6;
+		break;
+	}
+
+	switch (*(__u8 *) ainsn->insn) {
+	case 0x05:	/* balr	*/
+	case 0x0d:	/* basr */
+		ainsn->fixup = FIXUP_RETURN_REGISTER;
+		/* if r2 = 0, no branch will be taken */
+		if ((*ainsn->insn & 0x0f) == 0)
+			ainsn->fixup |= FIXUP_BRANCH_NOT_TAKEN;
+		break;
+	case 0x06:	/* bctr	*/
+	case 0x07:	/* bcr	*/
+		ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+		break;
+	case 0x45:	/* bal	*/
+	case 0x4d:	/* bas	*/
+		ainsn->fixup = FIXUP_RETURN_REGISTER;
+		break;
+	case 0x47:	/* bc	*/
+	case 0x46:	/* bct	*/
+	case 0x86:	/* bxh	*/
+	case 0x87:	/* bxle	*/
+		ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+		break;
+	case 0x82:	/* lpsw	*/
+		ainsn->fixup = FIXUP_NOT_REQUIRED;
+		break;
+	case 0xb2:	/* lpswe */
+		if (*(((__u8 *) ainsn->insn) + 1) == 0xb2) {
+			ainsn->fixup = FIXUP_NOT_REQUIRED;
+		}
+		break;
+	case 0xa7:	/* bras	*/
+		if ((*ainsn->insn & 0x0f) == 0x05) {
+			ainsn->fixup |= FIXUP_RETURN_REGISTER;
+		}
+		break;
+	case 0xc0:
+		if ((*ainsn->insn & 0x0f) == 0x00  /* larl  */
+			|| (*ainsn->insn & 0x0f) == 0x05) /* brasl */
+		ainsn->fixup |= FIXUP_RETURN_REGISTER;
+		break;
+	case 0xeb:
+		if (*(((__u8 *) ainsn->insn) + 5 ) == 0x44 ||	/* bxhg  */
+			*(((__u8 *) ainsn->insn) + 5) == 0x45) {/* bxleg */
+			ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+		}
+		break;
+	case 0xe3:	/* bctg	*/
+		if (*(((__u8 *) ainsn->insn) + 5) == 0x46) {
+			ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+		}
+		break;
+	}
+}
+
+static int __kprobes swap_instruction(void *aref)
+{
+	struct ins_replace_args *args = aref;
+	int err = -EFAULT;
+
+	asm volatile(
+		"0: mvc  0(2,%2),0(%3)\n"
+		"1: la   %0,0\n"
+		"2:\n"
+		EX_TABLE(0b,2b)
+		: "+d" (err), "=m" (*args->ptr)
+		: "a" (args->ptr), "a" (&args->new), "m" (args->new));
+	return err;
+}
+
+void __kprobes arch_arm_kprobe(struct kprobe *p)
+{
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	unsigned long status = kcb->kprobe_status;
+	struct ins_replace_args args;
+
+	args.ptr = p->addr;
+	args.old = p->opcode;
+	args.new = BREAKPOINT_INSTRUCTION;
+
+	kcb->kprobe_status = KPROBE_SWAP_INST;
+	stop_machine_run(swap_instruction, &args, NR_CPUS);
+	kcb->kprobe_status = status;
+}
+
+void __kprobes arch_disarm_kprobe(struct kprobe *p)
+{
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	unsigned long status = kcb->kprobe_status;
+	struct ins_replace_args args;
+
+	args.ptr = p->addr;
+	args.old = BREAKPOINT_INSTRUCTION;
+	args.new = p->opcode;
+
+	kcb->kprobe_status = KPROBE_SWAP_INST;
+	stop_machine_run(swap_instruction, &args, NR_CPUS);
+	kcb->kprobe_status = status;
+}
+
+void __kprobes arch_remove_kprobe(struct kprobe *p)
+{
+	mutex_lock(&kprobe_mutex);
+	free_insn_slot(p->ainsn.insn);
+	mutex_unlock(&kprobe_mutex);
+}
+
+static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+{
+	per_cr_bits kprobe_per_regs[1];
+
+	memset(kprobe_per_regs, 0, sizeof(per_cr_bits));
+	regs->psw.addr = (unsigned long)p->ainsn.insn | PSW_ADDR_AMODE;
+
+	/* Set up the per control reg info, will pass to lctl */
+	kprobe_per_regs[0].em_instruction_fetch = 1;
+	kprobe_per_regs[0].starting_addr = (unsigned long)p->ainsn.insn;
+	kprobe_per_regs[0].ending_addr = (unsigned long)p->ainsn.insn + 1;
+
+	/* Set the PER control regs, turns on single step for this address */
+	__ctl_load(kprobe_per_regs, 9, 11);
+	regs->psw.mask |= PSW_MASK_PER;
+	regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK);
+}
+
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+	kcb->prev_kprobe.kp = kprobe_running();
+	kcb->prev_kprobe.status = kcb->kprobe_status;
+	kcb->prev_kprobe.kprobe_saved_imask = kcb->kprobe_saved_imask;
+	memcpy(kcb->prev_kprobe.kprobe_saved_ctl, kcb->kprobe_saved_ctl,
+					sizeof(kcb->kprobe_saved_ctl));
+}
+
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+	__get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
+	kcb->kprobe_status = kcb->prev_kprobe.status;
+	kcb->kprobe_saved_imask = kcb->prev_kprobe.kprobe_saved_imask;
+	memcpy(kcb->kprobe_saved_ctl, kcb->prev_kprobe.kprobe_saved_ctl,
+					sizeof(kcb->kprobe_saved_ctl));
+}
+
+static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
+						struct kprobe_ctlblk *kcb)
+{
+	__get_cpu_var(current_kprobe) = p;
+	/* Save the interrupt and per flags */
+	kcb->kprobe_saved_imask = regs->psw.mask &
+	    (PSW_MASK_PER | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK);
+	/* Save the control regs that govern PER */
+	__ctl_store(kcb->kprobe_saved_ctl, 9, 11);
+}
+
+/* Called with kretprobe_lock held */
+void __kprobes arch_prepare_kretprobe(struct kretprobe *rp,
+					struct pt_regs *regs)
+{
+	struct kretprobe_instance *ri;
+
+	if ((ri = get_free_rp_inst(rp)) != NULL) {
+		ri->rp = rp;
+		ri->task = current;
+		ri->ret_addr = (kprobe_opcode_t *) regs->gprs[14];
+
+		/* Replace the return addr with trampoline addr */
+		regs->gprs[14] = (unsigned long)&kretprobe_trampoline;
+
+		add_rp_inst(ri);
+	} else {
+		rp->nmissed++;
+	}
+}
+
+static int __kprobes kprobe_handler(struct pt_regs *regs)
+{
+	struct kprobe *p;
+	int ret = 0;
+	unsigned long *addr = (unsigned long *)
+		((regs->psw.addr & PSW_ADDR_INSN) - 2);
+	struct kprobe_ctlblk *kcb;
+
+	/*
+	 * We don't want to be preempted for the entire
+	 * duration of kprobe processing
+	 */
+	preempt_disable();
+	kcb = get_kprobe_ctlblk();
+
+	/* Check we're not actually recursing */
+	if (kprobe_running()) {
+		p = get_kprobe(addr);
+		if (p) {
+			if (kcb->kprobe_status == KPROBE_HIT_SS &&
+			    *p->ainsn.insn == BREAKPOINT_INSTRUCTION) {
+				regs->psw.mask &= ~PSW_MASK_PER;
+				regs->psw.mask |= kcb->kprobe_saved_imask;
+				goto no_kprobe;
+			}
+			/* We have reentered the kprobe_handler(), since
+			 * another probe was hit while within the handler.
+			 * We here save the original kprobes variables and
+			 * just single step on the instruction of the new probe
+			 * without calling any user handlers.
+			 */
+			save_previous_kprobe(kcb);
+			set_current_kprobe(p, regs, kcb);
+			kprobes_inc_nmissed_count(p);
+			prepare_singlestep(p, regs);
+			kcb->kprobe_status = KPROBE_REENTER;
+			return 1;
+		} else {
+			p = __get_cpu_var(current_kprobe);
+			if (p->break_handler && p->break_handler(p, regs)) {
+				goto ss_probe;
+			}
+		}
+		goto no_kprobe;
+	}
+
+	p = get_kprobe(addr);
+	if (!p) {
+		if (*addr != BREAKPOINT_INSTRUCTION) {
+			/*
+			 * The breakpoint instruction was removed right
+			 * after we hit it.  Another cpu has removed
+			 * either a probepoint or a debugger breakpoint
+			 * at this address.  In either case, no further
+			 * handling of this interrupt is appropriate.
+			 *
+			 */
+			ret = 1;
+		}
+		/* Not one of ours: let kernel handle it */
+		goto no_kprobe;
+	}
+
+	kcb->kprobe_status = KPROBE_HIT_ACTIVE;
+	set_current_kprobe(p, regs, kcb);
+	if (p->pre_handler && p->pre_handler(p, regs))
+		/* handler has already set things up, so skip ss setup */
+		return 1;
+
+ss_probe:
+	prepare_singlestep(p, regs);
+	kcb->kprobe_status = KPROBE_HIT_SS;
+	return 1;
+
+no_kprobe:
+	preempt_enable_no_resched();
+	return ret;
+}
+
+/*
+ * Function return probe trampoline:
+ *	- init_kprobes() establishes a probepoint here
+ *	- When the probed function returns, this probe
+ *		causes the handlers to fire
+ */
+void __kprobes kretprobe_trampoline_holder(void)
+{
+	asm volatile(".global kretprobe_trampoline\n"
+		     "kretprobe_trampoline: bcr 0,0\n");
+}
+
+/*
+ * Called when the probe at kretprobe trampoline is hit
+ */
+int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
+{
+	struct kretprobe_instance *ri = NULL;
+	struct hlist_head *head;
+	struct hlist_node *node, *tmp;
+	unsigned long flags, orig_ret_address = 0;
+	unsigned long trampoline_address = (unsigned long)&kretprobe_trampoline;
+
+	spin_lock_irqsave(&kretprobe_lock, flags);
+	head = kretprobe_inst_table_head(current);
+
+	/*
+	 * It is possible to have multiple instances associated with a given
+	 * task either because an multiple functions in the call path
+	 * have a return probe installed on them, and/or more then one return
+	 * return probe was registered for a target function.
+	 *
+	 * We can handle this because:
+	 *     - instances are always inserted at the head of the list
+	 *     - when multiple return probes are registered for the same
+	 *	 function, the first instance's ret_addr will point to the
+	 *	 real return address, and all the rest will point to
+	 *	 kretprobe_trampoline
+	 */
+	hlist_for_each_entry_safe(ri, node, tmp, head, hlist) {
+		if (ri->task != current)
+			/* another task is sharing our hash bucket */
+			continue;
+
+		if (ri->rp && ri->rp->handler)
+			ri->rp->handler(ri, regs);
+
+		orig_ret_address = (unsigned long)ri->ret_addr;
+		recycle_rp_inst(ri);
+
+		if (orig_ret_address != trampoline_address) {
+			/*
+			 * This is the real return address. Any other
+			 * instances associated with this task are for
+			 * other calls deeper on the call stack
+			 */
+			break;
+		}
+	}
+	BUG_ON(!orig_ret_address || (orig_ret_address == trampoline_address));
+	regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
+
+	reset_current_kprobe();
+	spin_unlock_irqrestore(&kretprobe_lock, flags);
+	preempt_enable_no_resched();
+
+	/*
+	 * By returning a non-zero value, we are telling
+	 * kprobe_handler() that we don't want the post_handler
+	 * to run (and have re-enabled preemption)
+	 */
+	return 1;
+}
+
+/*
+ * Called after single-stepping.  p->addr is the address of the
+ * instruction whose first byte has been replaced by the "breakpoint"
+ * instruction.  To avoid the SMP problems that can occur when we
+ * temporarily put back the original opcode to single-step, we
+ * single-stepped a copy of the instruction.  The address of this
+ * copy is p->ainsn.insn.
+ */
+static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
+{
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+	regs->psw.addr &= PSW_ADDR_INSN;
+
+	if (p->ainsn.fixup & FIXUP_PSW_NORMAL)
+		regs->psw.addr = (unsigned long)p->addr +
+				((unsigned long)regs->psw.addr -
+				 (unsigned long)p->ainsn.insn);
+
+	if (p->ainsn.fixup & FIXUP_BRANCH_NOT_TAKEN)
+		if ((unsigned long)regs->psw.addr -
+		    (unsigned long)p->ainsn.insn == p->ainsn.ilen)
+			regs->psw.addr = (unsigned long)p->addr + p->ainsn.ilen;
+
+	if (p->ainsn.fixup & FIXUP_RETURN_REGISTER)
+		regs->gprs[p->ainsn.reg] = ((unsigned long)p->addr +
+						(regs->gprs[p->ainsn.reg] -
+						(unsigned long)p->ainsn.insn))
+						| PSW_ADDR_AMODE;
+
+	regs->psw.addr |= PSW_ADDR_AMODE;
+	/* turn off PER mode */
+	regs->psw.mask &= ~PSW_MASK_PER;
+	/* Restore the original per control regs */
+	__ctl_load(kcb->kprobe_saved_ctl, 9, 11);
+	regs->psw.mask |= kcb->kprobe_saved_imask;
+}
+
+static int __kprobes post_kprobe_handler(struct pt_regs *regs)
+{
+	struct kprobe *cur = kprobe_running();
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+	if (!cur)
+		return 0;
+
+	if ((kcb->kprobe_status != KPROBE_REENTER) && cur->post_handler) {
+		kcb->kprobe_status = KPROBE_HIT_SSDONE;
+		cur->post_handler(cur, regs, 0);
+	}
+
+	resume_execution(cur, regs);
+
+	/*Restore back the original saved kprobes variables and continue. */
+	if (kcb->kprobe_status == KPROBE_REENTER) {
+		restore_previous_kprobe(kcb);
+		goto out;
+	}
+	reset_current_kprobe();
+out:
+	preempt_enable_no_resched();
+
+	/*
+	 * if somebody else is singlestepping across a probe point, psw mask
+	 * will have PER set, in which case, continue the remaining processing
+	 * of do_single_step, as if this is not a probe hit.
+	 */
+	if (regs->psw.mask & PSW_MASK_PER) {
+		return 0;
+	}
+
+	return 1;
+}
+
+static int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+{
+	struct kprobe *cur = kprobe_running();
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	const struct exception_table_entry *entry;
+
+	switch(kcb->kprobe_status) {
+	case KPROBE_SWAP_INST:
+		/* We are here because the instruction replacement failed */
+		return 0;
+	case KPROBE_HIT_SS:
+	case KPROBE_REENTER:
+		/*
+		 * We are here because the instruction being single
+		 * stepped caused a page fault. We reset the current
+		 * kprobe and the nip points back to the probe address
+		 * and allow the page fault handler to continue as a
+		 * normal page fault.
+		 */
+		regs->psw.addr = (unsigned long)cur->addr | PSW_ADDR_AMODE;
+		regs->psw.mask &= ~PSW_MASK_PER;
+		regs->psw.mask |= kcb->kprobe_saved_imask;
+		if (kcb->kprobe_status == KPROBE_REENTER)
+			restore_previous_kprobe(kcb);
+		else
+			reset_current_kprobe();
+		preempt_enable_no_resched();
+		break;
+	case KPROBE_HIT_ACTIVE:
+	case KPROBE_HIT_SSDONE:
+		/*
+		 * We increment the nmissed count for accounting,
+		 * we can also use npre/npostfault count for accouting
+		 * these specific fault cases.
+		 */
+		kprobes_inc_nmissed_count(cur);
+
+		/*
+		 * We come here because instructions in the pre/post
+		 * handler caused the page_fault, this could happen
+		 * if handler tries to access user space by
+		 * copy_from_user(), get_user() etc. Let the
+		 * user-specified handler try to fix it first.
+		 */
+		if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))
+			return 1;
+
+		/*
+		 * In case the user-specified fault handler returned
+		 * zero, try to fix up.
+		 */
+		entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+		if (entry) {
+			regs->psw.addr = entry->fixup | PSW_ADDR_AMODE;
+			return 1;
+		}
+
+		/*
+		 * fixup_exception() could not handle it,
+		 * Let do_page_fault() fix it.
+		 */
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+/*
+ * Wrapper routine to for handling exceptions.
+ */
+int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
+				       unsigned long val, void *data)
+{
+	struct die_args *args = (struct die_args *)data;
+	int ret = NOTIFY_DONE;
+
+	switch (val) {
+	case DIE_BPT:
+		if (kprobe_handler(args->regs))
+			ret = NOTIFY_STOP;
+		break;
+	case DIE_SSTEP:
+		if (post_kprobe_handler(args->regs))
+			ret = NOTIFY_STOP;
+		break;
+	case DIE_TRAP:
+	case DIE_PAGE_FAULT:
+		/* kprobe_running() needs smp_processor_id() */
+		preempt_disable();
+		if (kprobe_running() &&
+		    kprobe_fault_handler(args->regs, args->trapnr))
+			ret = NOTIFY_STOP;
+		preempt_enable();
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+{
+	struct jprobe *jp = container_of(p, struct jprobe, kp);
+	unsigned long addr;
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+	memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));
+
+	/* setup return addr to the jprobe handler routine */
+	regs->psw.addr = (unsigned long)(jp->entry) | PSW_ADDR_AMODE;
+
+	/* r14 is the function return address */
+	kcb->jprobe_saved_r14 = (unsigned long)regs->gprs[14];
+	/* r15 is the stack pointer */
+	kcb->jprobe_saved_r15 = (unsigned long)regs->gprs[15];
+	addr = (unsigned long)kcb->jprobe_saved_r15;
+
+	memcpy(kcb->jprobes_stack, (kprobe_opcode_t *) addr,
+	       MIN_STACK_SIZE(addr));
+	return 1;
+}
+
+void __kprobes jprobe_return(void)
+{
+	asm volatile(".word 0x0002");
+}
+
+void __kprobes jprobe_return_end(void)
+{
+	asm volatile("bcr 0,0");
+}
+
+int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+{
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	unsigned long stack_addr = (unsigned long)(kcb->jprobe_saved_r15);
+
+	/* Put the regs back */
+	memcpy(regs, &kcb->jprobe_saved_regs, sizeof(struct pt_regs));
+	/* put the stack back */
+	memcpy((kprobe_opcode_t *) stack_addr, kcb->jprobes_stack,
+	       MIN_STACK_SIZE(stack_addr));
+	preempt_enable_no_resched();
+	return 1;
+}
+
+static struct kprobe trampoline_p = {
+	.addr = (kprobe_opcode_t *) & kretprobe_trampoline,
+	.pre_handler = trampoline_probe_handler
+};
+
+int __init arch_init_kprobes(void)
+{
+	return register_kprobe(&trampoline_p);
+}
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index 658e5ac484f..4562cdbce8e 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -8,13 +8,30 @@
 
 #include <asm/lowcore.h>
 
-		.globl	do_reipl
-do_reipl:	basr	%r13,0
+		.globl	do_reipl_asm
+do_reipl_asm:	basr	%r13,0
 .Lpg0:		lpsw	.Lnewpsw-.Lpg0(%r13)
-.Lpg1:		lctl	%c6,%c6,.Lall-.Lpg0(%r13)
-                stctl   %c0,%c0,.Lctlsave-.Lpg0(%r13)
-                ni      .Lctlsave-.Lpg0(%r13),0xef
-                lctl    %c0,%c0,.Lctlsave-.Lpg0(%r13)
+
+		# switch off lowcore protection
+
+.Lpg1:		stctl	%c0,%c0,.Lctlsave1-.Lpg0(%r13)
+		stctl	%c0,%c0,.Lctlsave2-.Lpg0(%r13)
+		ni	.Lctlsave1-.Lpg0(%r13),0xef
+		lctl	%c0,%c0,.Lctlsave1-.Lpg0(%r13)
+
+		# do store status of all registers
+
+		stm	%r0,%r15,__LC_GPREGS_SAVE_AREA
+		stctl	%c0,%c15,__LC_CREGS_SAVE_AREA
+		mvc	__LC_CREGS_SAVE_AREA(4),.Lctlsave2-.Lpg0(%r13)
+		stam	%a0,%a15,__LC_AREGS_SAVE_AREA
+		stpx	__LC_PREFIX_SAVE_AREA
+		stckc	.Lclkcmp-.Lpg0(%r13)
+		mvc	__LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
+		stpt	__LC_CPU_TIMER_SAVE_AREA
+		st	%r13, __LC_PSW_SAVE_AREA+4
+
+		lctl	%c6,%c6,.Lall-.Lpg0(%r13)
                 lr      %r1,%r2
         	mvc     __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
                 stsch   .Lschib-.Lpg0(%r13)                                    
@@ -46,9 +63,11 @@ do_reipl:	basr	%r13,0
 .Ldisab:	st      %r14,.Ldispsw+4-.Lpg0(%r13)
 		lpsw	.Ldispsw-.Lpg0(%r13)
                 .align 	8
+.Lclkcmp:	.quad	0x0000000000000000
 .Lall:		.long	0xff000000
 .Lnull:		.long   0x00000000
-.Lctlsave:      .long   0x00000000
+.Lctlsave1:	.long	0x00000000
+.Lctlsave2:	.long	0x00000000
                 .align 	8
 .Lnewpsw:	.long   0x00080000,0x80000000+.Lpg1
 .Lpcnew:  	.long   0x00080000,0x80000000+.Lecs
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index 4d090d60f3e..95bd1e234f6 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -8,13 +8,30 @@
  */
 
 #include <asm/lowcore.h>
-		.globl	do_reipl
-do_reipl:	basr	%r13,0
-.Lpg0:		lpswe   .Lnewpsw-.Lpg0(%r13)
+		.globl	do_reipl_asm
+do_reipl_asm:	basr	%r13,0
+
+		# do store status of all registers
+
+.Lpg0:		stg	%r1,.Lregsave-.Lpg0(%r13)
+		lghi	%r1,0x1000
+		stmg	%r0,%r15,__LC_GPREGS_SAVE_AREA-0x1000(%r1)
+		lg	%r0,.Lregsave-.Lpg0(%r13)
+		stg	%r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1)
+		stctg	%c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1)
+		stam	%a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1)
+		stpx	__LC_PREFIX_SAVE_AREA-0x1000(%r1)
+		stfpc	__LC_FP_CREG_SAVE_AREA-0x1000(%r1)
+		stckc	.Lclkcmp-.Lpg0(%r13)
+		mvc	__LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13)
+		stpt	__LC_CPU_TIMER_SAVE_AREA-0x1000(%r1)
+		stg	%r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1)
+
+		lpswe	.Lnewpsw-.Lpg0(%r13)
 .Lpg1:		lctlg	%c6,%c6,.Lall-.Lpg0(%r13)
-                stctg   %c0,%c0,.Lctlsave-.Lpg0(%r13)
-                ni      .Lctlsave+4-.Lpg0(%r13),0xef
-                lctlg   %c0,%c0,.Lctlsave-.Lpg0(%r13)
+		stctg	%c0,%c0,.Lregsave-.Lpg0(%r13)
+		ni	.Lregsave+4-.Lpg0(%r13),0xef
+		lctlg	%c0,%c0,.Lregsave-.Lpg0(%r13)
                 lgr     %r1,%r2
         	mvc     __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
                 stsch   .Lschib-.Lpg0(%r13)                                    
@@ -50,8 +67,9 @@ do_reipl:	basr	%r13,0
 		st     %r14,.Ldispsw+12-.Lpg0(%r13)
 		lpswe	.Ldispsw-.Lpg0(%r13)
                 .align 	8
+.Lclkcmp:	.quad	0x0000000000000000
 .Lall:		.quad	0x00000000ff000000
-.Lctlsave:      .quad   0x0000000000000000
+.Lregsave:	.quad	0x0000000000000000
 .Lnull:		.long   0x0000000000000000
                 .align 	16
 /*
@@ -92,5 +110,3 @@ do_reipl:	basr	%r13,0
 		.long	0x00000000,0x00000000
 		.long	0x00000000,0x00000000
 	
-
-	
diff --git a/arch/s390/kernel/reipl_diag.c b/arch/s390/kernel/reipl_diag.c
deleted file mode 100644
index 1f33951ba43..00000000000
--- a/arch/s390/kernel/reipl_diag.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * This file contains the implementation of the
- * Linux re-IPL support
- *
- * (C) Copyright IBM Corp. 2005
- *
- * Author(s): Volker Sameske (sameske@de.ibm.com)
- *
- */
-
-#include <linux/kernel.h>
-
-static unsigned int reipl_diag_rc1;
-static unsigned int reipl_diag_rc2;
-
-/*
- * re-IPL the system using the last used IPL parameters
- */
-void reipl_diag(void)
-{
-        asm volatile (
-		"   la   %%r4,0\n"
-		"   la   %%r5,0\n"
-                "   diag %%r4,%2,0x308\n"
-                "0:\n"
-		"   st   %%r4,%0\n"
-		"   st   %%r5,%1\n"
-                ".section __ex_table,\"a\"\n"
-#ifdef CONFIG_64BIT
-                "   .align 8\n"
-                "   .quad 0b, 0b\n"
-#else
-                "   .align 4\n"
-                "   .long 0b, 0b\n"
-#endif
-                ".previous\n"
-                : "=m" (reipl_diag_rc1), "=m" (reipl_diag_rc2)
-		: "d" (3) : "cc", "4", "5" );
-}
diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c
index c73a45467fa..9f19e833a56 100644
--- a/arch/s390/kernel/s390_ksyms.c
+++ b/arch/s390/kernel/s390_ksyms.c
@@ -25,12 +25,6 @@ EXPORT_SYMBOL(_oi_bitmap);
 EXPORT_SYMBOL(_ni_bitmap);
 EXPORT_SYMBOL(_zb_findmap);
 EXPORT_SYMBOL(_sb_findmap);
-EXPORT_SYMBOL(__copy_from_user_asm);
-EXPORT_SYMBOL(__copy_to_user_asm);
-EXPORT_SYMBOL(__copy_in_user_asm);
-EXPORT_SYMBOL(__clear_user_asm);
-EXPORT_SYMBOL(__strncpy_from_user_asm);
-EXPORT_SYMBOL(__strnlen_user_asm);
 EXPORT_SYMBOL(diag10);
 
 /*
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c902f059c7a..e3d9325f602 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -37,6 +37,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/device.h>
 #include <linux/notifier.h>
+#include <linux/pfn.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -50,6 +51,12 @@
 #include <asm/sections.h>
 
 /*
+ * User copy operations.
+ */
+struct uaccess_ops uaccess;
+EXPORT_SYMBOL_GPL(uaccess);
+
+/*
  * Machine setup..
  */
 unsigned int console_mode = 0;
@@ -284,16 +291,9 @@ void (*_machine_power_off)(void) = machine_power_off_smp;
 /*
  * Reboot, halt and power_off routines for non SMP.
  */
-extern void reipl(unsigned long devno);
-extern void reipl_diag(void);
 static void do_machine_restart_nonsmp(char * __unused)
 {
-	reipl_diag();
-
-	if (MACHINE_IS_VM)
-		cpcmd ("IPL", NULL, 0, NULL);
-	else
-		reipl (0x10000 | S390_lowcore.ipl_device);
+	do_reipl();
 }
 
 static void do_machine_halt_nonsmp(void)
@@ -501,13 +501,47 @@ setup_memory(void)
 	 * partially used pages are not usable - thus
 	 * we are rounding upwards:
 	 */
-	start_pfn = (__pa(&_end) + PAGE_SIZE - 1) >> PAGE_SHIFT;
-	end_pfn = max_pfn = memory_end >> PAGE_SHIFT;
+	start_pfn = PFN_UP(__pa(&_end));
+	end_pfn = max_pfn = PFN_DOWN(memory_end);
 
 	/* Initialize storage key for kernel pages */
 	for (init_pfn = 0 ; init_pfn < start_pfn; init_pfn++)
 		page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY);
 
+#ifdef CONFIG_BLK_DEV_INITRD
+	/*
+	 * Move the initrd in case the bitmap of the bootmem allocater
+	 * would overwrite it.
+	 */
+
+	if (INITRD_START && INITRD_SIZE) {
+		unsigned long bmap_size;
+		unsigned long start;
+
+		bmap_size = bootmem_bootmap_pages(end_pfn - start_pfn + 1);
+		bmap_size = PFN_PHYS(bmap_size);
+
+		if (PFN_PHYS(start_pfn) + bmap_size > INITRD_START) {
+			start = PFN_PHYS(start_pfn) + bmap_size + PAGE_SIZE;
+
+			if (start + INITRD_SIZE > memory_end) {
+				printk("initrd extends beyond end of memory "
+				       "(0x%08lx > 0x%08lx)\n"
+				       "disabling initrd\n",
+				       start + INITRD_SIZE, memory_end);
+				INITRD_START = INITRD_SIZE = 0;
+			} else {
+				printk("Moving initrd (0x%08lx -> 0x%08lx, "
+				       "size: %ld)\n",
+				       INITRD_START, start, INITRD_SIZE);
+				memmove((void *) start, (void *) INITRD_START,
+					INITRD_SIZE);
+				INITRD_START = start;
+			}
+		}
+	}
+#endif
+
 	/*
 	 * Initialize the boot-time allocator (with low memory only):
 	 */
@@ -559,7 +593,7 @@ setup_memory(void)
 	reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size);
 
 #ifdef CONFIG_BLK_DEV_INITRD
-	if (INITRD_START) {
+	if (INITRD_START && INITRD_SIZE) {
 		if (INITRD_START + INITRD_SIZE <= memory_end) {
 			reserve_bootmem(INITRD_START, INITRD_SIZE);
 			initrd_start = INITRD_START;
@@ -613,6 +647,11 @@ setup_arch(char **cmdline_p)
 
 	memory_end = memory_size;
 
+	if (MACHINE_HAS_MVCOS)
+		memcpy(&uaccess, &uaccess_mvcos, sizeof(uaccess));
+	else
+		memcpy(&uaccess, &uaccess_std, sizeof(uaccess));
+
 	parse_early_param();
 
 #ifndef CONFIG_64BIT
@@ -720,214 +759,3 @@ struct seq_operations cpuinfo_op = {
 	.show	= show_cpuinfo,
 };
 
-#define DEFINE_IPL_ATTR(_name, _format, _value)			\
-static ssize_t ipl_##_name##_show(struct subsystem *subsys,	\
-		char *page)					\
-{								\
-	return sprintf(page, _format, _value);			\
-}								\
-static struct subsys_attribute ipl_##_name##_attr =		\
-	__ATTR(_name, S_IRUGO, ipl_##_name##_show, NULL);
-
-DEFINE_IPL_ATTR(wwpn, "0x%016llx\n", (unsigned long long)
-		IPL_PARMBLOCK_START->fcp.wwpn);
-DEFINE_IPL_ATTR(lun, "0x%016llx\n", (unsigned long long)
-		IPL_PARMBLOCK_START->fcp.lun);
-DEFINE_IPL_ATTR(bootprog, "%lld\n", (unsigned long long)
-		IPL_PARMBLOCK_START->fcp.bootprog);
-DEFINE_IPL_ATTR(br_lba, "%lld\n", (unsigned long long)
-		IPL_PARMBLOCK_START->fcp.br_lba);
-
-enum ipl_type_type {
-	ipl_type_unknown,
-	ipl_type_ccw,
-	ipl_type_fcp,
-};
-
-static enum ipl_type_type
-get_ipl_type(void)
-{
-	struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
-
-	if (!IPL_DEVNO_VALID)
-		return ipl_type_unknown;
-	if (!IPL_PARMBLOCK_VALID)
-		return ipl_type_ccw;
-	if (ipl->hdr.header.version > IPL_MAX_SUPPORTED_VERSION)
-		return ipl_type_unknown;
-	if (ipl->fcp.pbt != IPL_TYPE_FCP)
-		return ipl_type_unknown;
-	return ipl_type_fcp;
-}
-
-static ssize_t
-ipl_type_show(struct subsystem *subsys, char *page)
-{
-	switch (get_ipl_type()) {
-	case ipl_type_ccw:
-		return sprintf(page, "ccw\n");
-	case ipl_type_fcp:
-		return sprintf(page, "fcp\n");
-	default:
-		return sprintf(page, "unknown\n");
-	}
-}
-
-static struct subsys_attribute ipl_type_attr = __ATTR_RO(ipl_type);
-
-static ssize_t
-ipl_device_show(struct subsystem *subsys, char *page)
-{
-	struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
-
-	switch (get_ipl_type()) {
-	case ipl_type_ccw:
-		return sprintf(page, "0.0.%04x\n", ipl_devno);
-	case ipl_type_fcp:
-		return sprintf(page, "0.0.%04x\n", ipl->fcp.devno);
-	default:
-		return 0;
-	}
-}
-
-static struct subsys_attribute ipl_device_attr =
-	__ATTR(device, S_IRUGO, ipl_device_show, NULL);
-
-static struct attribute *ipl_fcp_attrs[] = {
-	&ipl_type_attr.attr,
-	&ipl_device_attr.attr,
-	&ipl_wwpn_attr.attr,
-	&ipl_lun_attr.attr,
-	&ipl_bootprog_attr.attr,
-	&ipl_br_lba_attr.attr,
-	NULL,
-};
-
-static struct attribute_group ipl_fcp_attr_group = {
-	.attrs = ipl_fcp_attrs,
-};
-
-static struct attribute *ipl_ccw_attrs[] = {
-	&ipl_type_attr.attr,
-	&ipl_device_attr.attr,
-	NULL,
-};
-
-static struct attribute_group ipl_ccw_attr_group = {
-	.attrs = ipl_ccw_attrs,
-};
-
-static struct attribute *ipl_unknown_attrs[] = {
-	&ipl_type_attr.attr,
-	NULL,
-};
-
-static struct attribute_group ipl_unknown_attr_group = {
-	.attrs = ipl_unknown_attrs,
-};
-
-static ssize_t
-ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
-{
-	unsigned int size = IPL_PARMBLOCK_SIZE;
-
-	if (off > size)
-		return 0;
-	if (off + count > size)
-		count = size - off;
-
-	memcpy(buf, (void *) IPL_PARMBLOCK_START + off, count);
-	return count;
-}
-
-static struct bin_attribute ipl_parameter_attr = {
-	.attr = {
-		.name = "binary_parameter",
-		.mode = S_IRUGO,
-		.owner = THIS_MODULE,
-	},
-	.size = PAGE_SIZE,
-	.read = &ipl_parameter_read,
-};
-
-static ssize_t
-ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
-{
-	unsigned int size =  IPL_PARMBLOCK_START->fcp.scp_data_len;
-	void *scp_data = &IPL_PARMBLOCK_START->fcp.scp_data;
-
-	if (off > size)
-		return 0;
-	if (off + count > size)
-		count = size - off;
-
-	memcpy(buf, scp_data + off, count);
-	return count;
-}
-
-static struct bin_attribute ipl_scp_data_attr = {
-	.attr = {
-		.name = "scp_data",
-		.mode = S_IRUGO,
-		.owner = THIS_MODULE,
-	},
-	.size = PAGE_SIZE,
-	.read = &ipl_scp_data_read,
-};
-
-static decl_subsys(ipl, NULL, NULL);
-
-static int ipl_register_fcp_files(void)
-{
-	int rc;
-
-	rc = sysfs_create_group(&ipl_subsys.kset.kobj,
-				&ipl_fcp_attr_group);
-	if (rc)
-		goto out;
-	rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
-				   &ipl_parameter_attr);
-	if (rc)
-		goto out_ipl_parm;
-	rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
-				   &ipl_scp_data_attr);
-	if (!rc)
-		goto out;
-
-	sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
-
-out_ipl_parm:
-	sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
-out:
-	return rc;
-}
-
-static int __init
-ipl_device_sysfs_register(void) {
-	int rc;
-
-	rc = firmware_register(&ipl_subsys);
-	if (rc)
-		goto out;
-
-	switch (get_ipl_type()) {
-	case ipl_type_ccw:
-		rc = sysfs_create_group(&ipl_subsys.kset.kobj,
-					&ipl_ccw_attr_group);
-		break;
-	case ipl_type_fcp:
-		rc = ipl_register_fcp_files();
-		break;
-	default:
-		rc = sysfs_create_group(&ipl_subsys.kset.kobj,
-					&ipl_unknown_attr_group);
-		break;
-	}
-
-	if (rc)
-		firmware_unregister(&ipl_subsys);
-out:
-	return rc;
-}
-
-__initcall(ipl_device_sysfs_register);
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index a887b686f27..642095ec7c0 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -114,29 +114,26 @@ sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
 static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
 {
 	unsigned long old_mask = regs->psw.mask;
-	int err;
-  
+	_sigregs user_sregs;
+
 	save_access_regs(current->thread.acrs);
 
 	/* Copy a 'clean' PSW mask to the user to avoid leaking
 	   information about whether PER is currently on.  */
 	regs->psw.mask = PSW_MASK_MERGE(PSW_USER_BITS, regs->psw.mask);
-	err = __copy_to_user(&sregs->regs.psw, &regs->psw,
-			     sizeof(sregs->regs.psw)+sizeof(sregs->regs.gprs));
+	memcpy(&user_sregs.regs.psw, &regs->psw, sizeof(sregs->regs.psw) +
+	       sizeof(sregs->regs.gprs));
 	regs->psw.mask = old_mask;
-	if (err != 0)
-		return err;
-	err = __copy_to_user(&sregs->regs.acrs, current->thread.acrs,
-			     sizeof(sregs->regs.acrs));
-	if (err != 0)
-		return err;
+	memcpy(&user_sregs.regs.acrs, current->thread.acrs,
+	       sizeof(sregs->regs.acrs));
 	/* 
 	 * We have to store the fp registers to current->thread.fp_regs
 	 * to merge them with the emulated registers.
 	 */
 	save_fp_regs(&current->thread.fp_regs);
-	return __copy_to_user(&sregs->fpregs, &current->thread.fp_regs,
-			      sizeof(s390_fp_regs));
+	memcpy(&user_sregs.fpregs, &current->thread.fp_regs,
+	       sizeof(s390_fp_regs));
+	return __copy_to_user(sregs, &user_sregs, sizeof(_sigregs));
 }
 
 /* Returns positive number on error */
@@ -144,27 +141,25 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
 {
 	unsigned long old_mask = regs->psw.mask;
 	int err;
+	_sigregs user_sregs;
 
 	/* Alwys make any pending restarted system call return -EINTR */
 	current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
-	err = __copy_from_user(&regs->psw, &sregs->regs.psw,
-			       sizeof(sregs->regs.psw)+sizeof(sregs->regs.gprs));
+	err = __copy_from_user(&user_sregs, sregs, sizeof(_sigregs));
 	regs->psw.mask = PSW_MASK_MERGE(old_mask, regs->psw.mask);
 	regs->psw.addr |= PSW_ADDR_AMODE;
 	if (err)
 		return err;
-	err = __copy_from_user(&current->thread.acrs, &sregs->regs.acrs,
-			       sizeof(sregs->regs.acrs));
-	if (err)
-		return err;
+	memcpy(&regs->psw, &user_sregs.regs.psw, sizeof(sregs->regs.psw) +
+	       sizeof(sregs->regs.gprs));
+	memcpy(&current->thread.acrs, &user_sregs.regs.acrs,
+	       sizeof(sregs->regs.acrs));
 	restore_access_regs(current->thread.acrs);
 
-	err = __copy_from_user(&current->thread.fp_regs, &sregs->fpregs,
-			       sizeof(s390_fp_regs));
+	memcpy(&current->thread.fp_regs, &user_sregs.fpregs,
+	       sizeof(s390_fp_regs));
 	current->thread.fp_regs.fpc &= FPC_VALID_MASK;
-	if (err)
-		return err;
 
 	restore_fp_regs(&current->thread.fp_regs);
 	regs->trap = -1;	/* disable syscall checks */
@@ -457,6 +452,7 @@ void do_signal(struct pt_regs *regs)
 		case -ERESTART_RESTARTBLOCK:
 			regs->gprs[2] = -EINTR;
 		}
+		regs->trap = -1;	/* Don't deal with this again. */
 	}
 
 	/* Get signal to deliver.  When running under ptrace, at this point
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 8e03219eea7..b2e6f4c8d38 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -59,9 +59,6 @@ static struct task_struct *current_set[NR_CPUS];
 extern char vmhalt_cmd[];
 extern char vmpoff_cmd[];
 
-extern void reipl(unsigned long devno);
-extern void reipl_diag(void);
-
 static void smp_ext_bitcall(int, ec_bit_sig);
 static void smp_ext_bitcall_others(ec_bit_sig);
 
@@ -279,12 +276,7 @@ static void do_machine_restart(void * __unused)
 	 * interrupted by an external interrupt and s390irq
 	 * locks are always held disabled).
 	 */
-	reipl_diag();
-
-	if (MACHINE_IS_VM)
-		cpcmd ("IPL", NULL, 0, NULL);
-	else
-		reipl (0x10000 | S390_lowcore.ipl_device);
+	do_reipl();
 }
 
 void machine_restart_smp(char * __unused) 
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index bde1d1d5985..c4982c96342 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -29,6 +29,7 @@
 #include <linux/module.h>
 #include <linux/kallsyms.h>
 #include <linux/reboot.h>
+#include <linux/kprobes.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -39,6 +40,7 @@
 #include <asm/s390_ext.h>
 #include <asm/lowcore.h>
 #include <asm/debug.h>
+#include <asm/kdebug.h>
 
 /* Called from entry.S only */
 extern void handle_per_exception(struct pt_regs *regs);
@@ -74,6 +76,20 @@ static int kstack_depth_to_print = 12;
 static int kstack_depth_to_print = 20;
 #endif /* CONFIG_64BIT */
 
+ATOMIC_NOTIFIER_HEAD(s390die_chain);
+
+int register_die_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&s390die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&s390die_chain, nb);
+}
+EXPORT_SYMBOL(unregister_die_notifier);
+
 /*
  * For show_trace we have tree different stack to consider:
  *   - the panic stack which is used if the kernel stack has overflown
@@ -305,8 +321,9 @@ report_user_fault(long interruption_code, struct pt_regs *regs)
 #endif
 }
 
-static void inline do_trap(long interruption_code, int signr, char *str,
-                           struct pt_regs *regs, siginfo_t *info)
+static void __kprobes inline do_trap(long interruption_code, int signr,
+					char *str, struct pt_regs *regs,
+					siginfo_t *info)
 {
 	/*
 	 * We got all needed information from the lowcore and can
@@ -315,6 +332,10 @@ static void inline do_trap(long interruption_code, int signr, char *str,
         if (regs->psw.mask & PSW_MASK_PSTATE)
 		local_irq_enable();
 
+	if (notify_die(DIE_TRAP, str, regs, interruption_code,
+				interruption_code, signr) == NOTIFY_STOP)
+		return;
+
         if (regs->psw.mask & PSW_MASK_PSTATE) {
                 struct task_struct *tsk = current;
 
@@ -336,8 +357,12 @@ static inline void __user *get_check_address(struct pt_regs *regs)
 	return (void __user *)((regs->psw.addr-S390_lowcore.pgm_ilc) & PSW_ADDR_INSN);
 }
 
-void do_single_step(struct pt_regs *regs)
+void __kprobes do_single_step(struct pt_regs *regs)
 {
+	if (notify_die(DIE_SSTEP, "sstep", regs, 0, 0,
+					SIGTRAP) == NOTIFY_STOP){
+		return;
+	}
 	if ((current->ptrace & PT_PTRACED) != 0)
 		force_sig(SIGTRAP, current);
 }
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index ff5f7bb34f7..af9e69a0301 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -24,6 +24,7 @@ SECTIONS
 	*(.text)
 	SCHED_TEXT
 	LOCK_TEXT
+	KPROBES_TEXT
 	*(.fixup)
 	*(.gnu.warning)
 	} = 0x0700
@@ -117,7 +118,7 @@ SECTIONS
 
   /* Sections to be discarded */
   /DISCARD/ : {
-	*(.exitcall.exit)
+	*(.exit.text) *(.exit.data) *(.exitcall.exit)
 	}
 
   /* Stabs debugging sections.  */
diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile
index e05d087a6ea..c42ffedfdb4 100644
--- a/arch/s390/lib/Makefile
+++ b/arch/s390/lib/Makefile
@@ -4,6 +4,6 @@
 
 EXTRA_AFLAGS := -traditional
 
-lib-y += delay.o string.o
-lib-y += $(if $(CONFIG_64BIT),uaccess64.o,uaccess.o)
+lib-y += delay.o string.o uaccess_std.o
+lib-$(CONFIG_64BIT) += uaccess_mvcos.o
 lib-$(CONFIG_SMP) += spinlock.o
diff --git a/arch/s390/lib/uaccess.S b/arch/s390/lib/uaccess.S
deleted file mode 100644
index 837275284d9..00000000000
--- a/arch/s390/lib/uaccess.S
+++ /dev/null
@@ -1,211 +0,0 @@
-/*
- *  arch/s390/lib/uaccess.S
- *    __copy_{from|to}_user functions.
- *
- *  s390
- *    Copyright (C) 2000,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Authors(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
- *  These functions have standard call interface
- */
-
-#include <linux/errno.h>
-#include <asm/lowcore.h>
-#include <asm/asm-offsets.h>
-
-        .text
-        .align 4
-        .globl __copy_from_user_asm
-	# %r2 = to, %r3 = n, %r4 = from
-__copy_from_user_asm:
-	slr	%r0,%r0
-0:	mvcp	0(%r3,%r2),0(%r4),%r0
-	jnz	1f
-	slr	%r2,%r2
-	br	%r14
-1:	la	%r2,256(%r2)
-	la	%r4,256(%r4)
-	ahi	%r3,-256
-2:	mvcp	0(%r3,%r2),0(%r4),%r0
-	jnz	1b
-3:	slr	%r2,%r2
-	br	%r14
-4:	lhi	%r0,-4096
-	lr	%r5,%r4
-	slr	%r5,%r0
-	nr	%r5,%r0		# %r5 = (%r4 + 4096) & -4096
-	slr	%r5,%r4		# %r5 = #bytes to next user page boundary
-	clr	%r3,%r5		# copy crosses next page boundary ?
-	jnh	6f		# no, the current page faulted
-	# move with the reduced length which is < 256
-5:	mvcp	0(%r5,%r2),0(%r4),%r0
-	slr	%r3,%r5
-6:	lr	%r2,%r3
-	br	%r14
-        .section __ex_table,"a"
-	.long	0b,4b
-	.long	2b,4b
-	.long	5b,6b
-        .previous
-
-        .align 4
-        .text
-        .globl __copy_to_user_asm
-	# %r2 = from, %r3 = n, %r4 = to
-__copy_to_user_asm:
-	slr	%r0,%r0
-0:	mvcs	0(%r3,%r4),0(%r2),%r0
-	jnz	1f
-	slr	%r2,%r2
-	br	%r14
-1:	la	%r2,256(%r2)
-	la	%r4,256(%r4)
-	ahi	%r3,-256
-2:	mvcs	0(%r3,%r4),0(%r2),%r0
-	jnz	1b
-3:	slr	%r2,%r2
-	br	%r14
-4:	lhi	%r0,-4096
-	lr	%r5,%r4
-	slr	%r5,%r0
-	nr	%r5,%r0		# %r5 = (%r4 + 4096) & -4096
-	slr	%r5,%r4		# %r5 = #bytes to next user page boundary
-	clr	%r3,%r5		# copy crosses next page boundary ?
-	jnh	6f		# no, the current page faulted
-	# move with the reduced length which is < 256
-5:	mvcs	0(%r5,%r4),0(%r2),%r0
-	slr	%r3,%r5
-6:	lr	%r2,%r3
-	br	%r14
-        .section __ex_table,"a"
-	.long	0b,4b
-	.long	2b,4b
-	.long	5b,6b
-        .previous
-
-        .align 4
-        .text
-        .globl __copy_in_user_asm
-	# %r2 = from, %r3 = n, %r4 = to
-__copy_in_user_asm:
-	ahi	%r3,-1
-	jo	6f
-	sacf	256
-	bras	%r1,4f
-0:	ahi	%r3,257
-1:	mvc	0(1,%r4),0(%r2)
-	la	%r2,1(%r2)
-	la	%r4,1(%r4)
-	ahi	%r3,-1
-	jnz	1b
-2:	lr	%r2,%r3
-	br	%r14
-3:	mvc	0(256,%r4),0(%r2)
-	la	%r2,256(%r2)
-	la	%r4,256(%r4)
-4:	ahi	%r3,-256
-	jnm	3b
-5:	ex	%r3,4(%r1)
-	sacf	0
-6:	slr	%r2,%r2
-	br	%r14
-        .section __ex_table,"a"
-	.long	1b,2b
-	.long	3b,0b
-	.long	5b,0b
-        .previous
-
-        .align 4
-        .text
-        .globl __clear_user_asm
-	# %r2 = to, %r3 = n
-__clear_user_asm:
-	bras	%r5,0f
-	.long	empty_zero_page
-0:	l	%r5,0(%r5)
-	slr	%r0,%r0
-1:	mvcs	0(%r3,%r2),0(%r5),%r0
-	jnz	2f
-	slr	%r2,%r2
-	br	%r14
-2:	la	%r2,256(%r2)
-	ahi	%r3,-256
-3:	mvcs	0(%r3,%r2),0(%r5),%r0
-	jnz	2b
-4:	slr	%r2,%r2
-	br	%r14
-5:	lhi	%r0,-4096
-	lr	%r4,%r2
-	slr	%r4,%r0
-	nr	%r4,%r0		# %r4 = (%r2 + 4096) & -4096
-	slr	%r4,%r2		# %r4 = #bytes to next user page boundary
-	clr	%r3,%r4		# clear crosses next page boundary ?
-	jnh	7f		# no, the current page faulted
-	# clear with the reduced length which is < 256
-6:	mvcs	0(%r4,%r2),0(%r5),%r0
-	slr	%r3,%r4
-7:	lr	%r2,%r3
-	br	%r14
-        .section __ex_table,"a"
-	.long	1b,5b
-	.long	3b,5b
-	.long	6b,7b
-        .previous
-
-        .align 4
-        .text
-        .globl __strncpy_from_user_asm
-	# %r2 = count, %r3 = dst, %r4 = src
-__strncpy_from_user_asm:
-	lhi	%r0,0
-	lr	%r1,%r4
-	la	%r4,0(%r4)	# clear high order bit from %r4
-	la	%r2,0(%r2,%r4)	# %r2 points to first byte after string
-	sacf	256
-0:	srst	%r2,%r1
-	jo	0b
-	sacf	0
-	lr	%r1,%r2
-	jh	1f		# \0 found in string ?
-	ahi	%r1,1		# include \0 in copy
-1:	slr	%r1,%r4		# %r1 = copy length (without \0)
-	slr	%r2,%r4		# %r2 = return length (including \0)
-2:	mvcp	0(%r1,%r3),0(%r4),%r0
-	jnz	3f
-	br	%r14
-3:	la	%r3,256(%r3)
-	la	%r4,256(%r4)
-	ahi	%r1,-256
-	mvcp	0(%r1,%r3),0(%r4),%r0
-	jnz	3b
-	br	%r14
-4:	sacf	0
-	lhi	%r2,-EFAULT
-	br	%r14
-	.section __ex_table,"a"
-	.long	0b,4b
-	.previous
-
-        .align 4
-        .text
-        .globl __strnlen_user_asm
-	# %r2 = count, %r3 = src
-__strnlen_user_asm:
-	lhi	%r0,0
-	lr	%r1,%r3
-	la	%r3,0(%r3)	# clear high order bit from %r4
-	la	%r2,0(%r2,%r3)	# %r2 points to first byte after string
-	sacf	256
-0:	srst	%r2,%r1
-	jo	0b
-	sacf	0
-	ahi	%r2,1		# strnlen_user result includes the \0
-				# or return count+1 if \0 not found
-	slr	%r2,%r3
-	br	%r14
-2:	sacf	0
-	slr	%r2,%r2		# return 0 on exception
-	br	%r14
-	.section __ex_table,"a"
-	.long	0b,2b
-	.previous
diff --git a/arch/s390/lib/uaccess64.S b/arch/s390/lib/uaccess64.S
deleted file mode 100644
index 1f755be22f9..00000000000
--- a/arch/s390/lib/uaccess64.S
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- *  arch/s390x/lib/uaccess.S
- *    __copy_{from|to}_user functions.
- *
- *  s390
- *    Copyright (C) 2000,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Authors(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
- *  These functions have standard call interface
- */
-
-#include <linux/errno.h>
-#include <asm/lowcore.h>
-#include <asm/asm-offsets.h>
-
-        .text
-        .align 4
-        .globl __copy_from_user_asm
-	# %r2 = to, %r3 = n, %r4 = from
-__copy_from_user_asm:
-	slgr	%r0,%r0
-0:	mvcp	0(%r3,%r2),0(%r4),%r0
-	jnz	1f
-	slgr	%r2,%r2
-	br	%r14
-1:	la	%r2,256(%r2)
-	la	%r4,256(%r4)
-	aghi	%r3,-256
-2:	mvcp	0(%r3,%r2),0(%r4),%r0
-	jnz	1b
-3:	slgr	%r2,%r2
-	br	%r14
-4:	lghi	%r0,-4096
-	lgr	%r5,%r4
-	slgr	%r5,%r0
-	ngr	%r5,%r0		# %r5 = (%r4 + 4096) & -4096
-	slgr	%r5,%r4		# %r5 = #bytes to next user page boundary
-	clgr	%r3,%r5		# copy crosses next page boundary ?
-	jnh	6f		# no, the current page faulted
-	# move with the reduced length which is < 256
-5:	mvcp	0(%r5,%r2),0(%r4),%r0
-	slgr	%r3,%r5
-6:	lgr	%r2,%r3
-	br	%r14
-        .section __ex_table,"a"
-	.quad	0b,4b
-	.quad	2b,4b
-	.quad	5b,6b
-        .previous
-
-        .align 4
-        .text
-        .globl __copy_to_user_asm
-	# %r2 = from, %r3 = n, %r4 = to
-__copy_to_user_asm:
-	slgr	%r0,%r0
-0:	mvcs	0(%r3,%r4),0(%r2),%r0
-	jnz	1f
-	slgr	%r2,%r2
-	br	%r14
-1:	la	%r2,256(%r2)
-	la	%r4,256(%r4)
-	aghi	%r3,-256
-2:	mvcs	0(%r3,%r4),0(%r2),%r0
-	jnz	1b
-3:	slgr	%r2,%r2
-	br	%r14
-4:	lghi	%r0,-4096
-	lgr	%r5,%r4
-	slgr	%r5,%r0
-	ngr	%r5,%r0		# %r5 = (%r4 + 4096) & -4096
-	slgr	%r5,%r4		# %r5 = #bytes to next user page boundary
-	clgr	%r3,%r5		# copy crosses next page boundary ?
-	jnh	6f		# no, the current page faulted
-	# move with the reduced length which is < 256
-5:	mvcs	0(%r5,%r4),0(%r2),%r0
-	slgr	%r3,%r5
-6:	lgr	%r2,%r3
-	br	%r14
-        .section __ex_table,"a"
-	.quad	0b,4b
-	.quad	2b,4b
-	.quad	5b,6b
-        .previous
-
-        .align 4
-        .text
-        .globl __copy_in_user_asm
-	# %r2 = from, %r3 = n, %r4 = to
-__copy_in_user_asm:
-	aghi	%r3,-1
-	jo	6f
-	sacf	256
-	bras	%r1,4f
-0:	aghi	%r3,257
-1:	mvc	0(1,%r4),0(%r2)
-	la	%r2,1(%r2)
-	la	%r4,1(%r4)
-	aghi	%r3,-1
-	jnz	1b
-2:	lgr	%r2,%r3
-	br	%r14
-3:	mvc	0(256,%r4),0(%r2)
-	la	%r2,256(%r2)
-	la	%r4,256(%r4)
-4:	aghi	%r3,-256
-	jnm	3b
-5:	ex	%r3,4(%r1)
-	sacf	0
-6:	slgr	%r2,%r2
-	br	14
-        .section __ex_table,"a"
-	.quad	1b,2b
-	.quad	3b,0b
-	.quad	5b,0b
-        .previous
-
-        .align 4
-        .text
-        .globl __clear_user_asm
-	# %r2 = to, %r3 = n
-__clear_user_asm:
-	slgr	%r0,%r0
-	larl	%r5,empty_zero_page
-1:	mvcs	0(%r3,%r2),0(%r5),%r0
-	jnz	2f
-	slgr	%r2,%r2
-	br	%r14
-2:	la	%r2,256(%r2)
-	aghi	%r3,-256
-3:	mvcs	0(%r3,%r2),0(%r5),%r0
-	jnz	2b
-4:	slgr	%r2,%r2
-	br	%r14
-5:	lghi	%r0,-4096
-	lgr	%r4,%r2
-	slgr	%r4,%r0
-	ngr	%r4,%r0		# %r4 = (%r2 + 4096) & -4096
-	slgr	%r4,%r2		# %r4 = #bytes to next user page boundary
-	clgr	%r3,%r4		# clear crosses next page boundary ?
-	jnh	7f		# no, the current page faulted
-	# clear with the reduced length which is < 256
-6:	mvcs	0(%r4,%r2),0(%r5),%r0
-	slgr	%r3,%r4
-7:	lgr	%r2,%r3
-	br	%r14
-        .section __ex_table,"a"
-	.quad	1b,5b
-	.quad	3b,5b
-	.quad	6b,7b
-        .previous
-
-        .align 4
-        .text
-        .globl __strncpy_from_user_asm
-	# %r2 = count, %r3 = dst, %r4 = src
-__strncpy_from_user_asm:
-	lghi	%r0,0
-	lgr	%r1,%r4
-	la	%r2,0(%r2,%r4)	# %r2 points to first byte after string
-	sacf	256
-0:	srst	%r2,%r1
-	jo	0b
-	sacf	0
-	lgr	%r1,%r2
-	jh	1f		# \0 found in string ?
-	aghi	%r1,1		# include \0 in copy
-1:	slgr	%r1,%r4		# %r1 = copy length (without \0)
-	slgr	%r2,%r4		# %r2 = return length (including \0)
-2:	mvcp	0(%r1,%r3),0(%r4),%r0
-	jnz	3f
-	br	%r14
-3:	la	%r3,256(%r3)
-	la	%r4,256(%r4)
-	aghi	%r1,-256
-	mvcp	0(%r1,%r3),0(%r4),%r0
-	jnz	3b
-	br	%r14
-4:	sacf	0
-	lghi	%r2,-EFAULT
-	br	%r14
-	.section __ex_table,"a"
-	.quad	0b,4b
-	.previous
-
-        .align 4
-        .text
-        .globl __strnlen_user_asm
-	# %r2 = count, %r3 = src
-__strnlen_user_asm:
-	lghi	%r0,0
-	lgr	%r1,%r3
-	la	%r2,0(%r2,%r3)	# %r2 points to first byte after string
-	sacf	256
-0:	srst	%r2,%r1
-	jo	0b
-	sacf	0
-	aghi	%r2,1		# strnlen_user result includes the \0
-				# or return count+1 if \0 not found
-	slgr	%r2,%r3
-	br	%r14
-2:	sacf	0
-	slgr	%r2,%r2		# return 0 on exception
-	br	%r14
-	.section __ex_table,"a"
-	.quad	0b,2b
-	.previous
diff --git a/arch/s390/lib/uaccess_mvcos.c b/arch/s390/lib/uaccess_mvcos.c
new file mode 100644
index 00000000000..86c96d6c191
--- /dev/null
+++ b/arch/s390/lib/uaccess_mvcos.c
@@ -0,0 +1,156 @@
+/*
+ *  arch/s390/lib/uaccess_mvcos.c
+ *
+ *  Optimized user space space access functions based on mvcos.
+ *
+ *    Copyright (C) IBM Corp. 2006
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ *		 Gerald Schaefer (gerald.schaefer@de.ibm.com)
+ */
+
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <asm/uaccess.h>
+#include <asm/futex.h>
+
+#ifndef __s390x__
+#define AHI	"ahi"
+#define ALR	"alr"
+#define CLR	"clr"
+#define LHI	"lhi"
+#define SLR	"slr"
+#else
+#define AHI	"aghi"
+#define ALR	"algr"
+#define CLR	"clgr"
+#define LHI	"lghi"
+#define SLR	"slgr"
+#endif
+
+size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
+{
+	register unsigned long reg0 asm("0") = 0x81UL;
+	unsigned long tmp1, tmp2;
+
+	tmp1 = -4096UL;
+	asm volatile(
+		"0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
+		"   jz    4f\n"
+		"1:"ALR"  %0,%3\n"
+		"  "SLR"  %1,%3\n"
+		"  "SLR"  %2,%3\n"
+		"   j     0b\n"
+		"2: la    %4,4095(%1)\n"/* %4 = ptr + 4095 */
+		"   nr    %4,%3\n"	/* %4 = (ptr + 4095) & -4096 */
+		"  "SLR"  %4,%1\n"
+		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   jnh   5f\n"
+		"3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
+		"  "SLR"  %0,%4\n"
+		"   j     5f\n"
+		"4:"SLR"  %0,%0\n"
+		"5: \n"
+		EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+		: "d" (reg0) : "cc", "memory");
+	return size;
+}
+
+size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
+{
+	register unsigned long reg0 asm("0") = 0x810000UL;
+	unsigned long tmp1, tmp2;
+
+	tmp1 = -4096UL;
+	asm volatile(
+		"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
+		"   jz    4f\n"
+		"1:"ALR"  %0,%3\n"
+		"  "SLR"  %1,%3\n"
+		"  "SLR"  %2,%3\n"
+		"   j     0b\n"
+		"2: la    %4,4095(%1)\n"/* %4 = ptr + 4095 */
+		"   nr    %4,%3\n"	/* %4 = (ptr + 4095) & -4096 */
+		"  "SLR"  %4,%1\n"
+		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   jnh   5f\n"
+		"3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
+		"  "SLR"  %0,%4\n"
+		"   j     5f\n"
+		"4:"SLR"  %0,%0\n"
+		"5: \n"
+		EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+		: "d" (reg0) : "cc", "memory");
+	return size;
+}
+
+size_t copy_in_user_mvcos(size_t size, void __user *to, const void __user *from)
+{
+	register unsigned long reg0 asm("0") = 0x810081UL;
+	unsigned long tmp1, tmp2;
+
+	tmp1 = -4096UL;
+	/* FIXME: copy with reduced length. */
+	asm volatile(
+		"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
+		"   jz    2f\n"
+		"1:"ALR"  %0,%3\n"
+		"  "SLR"  %1,%3\n"
+		"  "SLR"  %2,%3\n"
+		"   j     0b\n"
+		"2:"SLR"  %0,%0\n"
+		"3: \n"
+		EX_TABLE(0b,3b)
+		: "+a" (size), "+a" (to), "+a" (from), "+a" (tmp1), "=a" (tmp2)
+		: "d" (reg0) : "cc", "memory");
+	return size;
+}
+
+size_t clear_user_mvcos(size_t size, void __user *to)
+{
+	register unsigned long reg0 asm("0") = 0x810000UL;
+	unsigned long tmp1, tmp2;
+
+	tmp1 = -4096UL;
+	asm volatile(
+		"0: .insn ss,0xc80000000000,0(%0,%1),0(%4),0\n"
+		"   jz    4f\n"
+		"1:"ALR"  %0,%2\n"
+		"  "SLR"  %1,%2\n"
+		"   j     0b\n"
+		"2: la    %3,4095(%1)\n"/* %4 = to + 4095 */
+		"   nr    %3,%2\n"	/* %4 = (to + 4095) & -4096 */
+		"  "SLR"  %3,%1\n"
+		"  "CLR"  %0,%3\n"	/* copy crosses next page boundary? */
+		"   jnh   5f\n"
+		"3: .insn ss,0xc80000000000,0(%3,%1),0(%4),0\n"
+		"  "SLR"  %0,%3\n"
+		"   j     5f\n"
+		"4:"SLR"  %0,%0\n"
+		"5: \n"
+		EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+		: "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2)
+		: "a" (empty_zero_page), "d" (reg0) : "cc", "memory");
+	return size;
+}
+
+extern size_t copy_from_user_std_small(size_t, const void __user *, void *);
+extern size_t copy_to_user_std_small(size_t, void __user *, const void *);
+extern size_t strnlen_user_std(size_t, const char __user *);
+extern size_t strncpy_from_user_std(size_t, const char __user *, char *);
+extern int futex_atomic_op(int, int __user *, int, int *);
+extern int futex_atomic_cmpxchg(int __user *, int, int);
+
+struct uaccess_ops uaccess_mvcos = {
+	.copy_from_user = copy_from_user_mvcos,
+	.copy_from_user_small = copy_from_user_std_small,
+	.copy_to_user = copy_to_user_mvcos,
+	.copy_to_user_small = copy_to_user_std_small,
+	.copy_in_user = copy_in_user_mvcos,
+	.clear_user = clear_user_mvcos,
+	.strnlen_user = strnlen_user_std,
+	.strncpy_from_user = strncpy_from_user_std,
+	.futex_atomic_op = futex_atomic_op,
+	.futex_atomic_cmpxchg = futex_atomic_cmpxchg,
+};
diff --git a/arch/s390/lib/uaccess_std.c b/arch/s390/lib/uaccess_std.c
new file mode 100644
index 00000000000..9a4d4a29ea7
--- /dev/null
+++ b/arch/s390/lib/uaccess_std.c
@@ -0,0 +1,340 @@
+/*
+ *  arch/s390/lib/uaccess_std.c
+ *
+ *  Standard user space access functions based on mvcp/mvcs and doing
+ *  interesting things in the secondary space mode.
+ *
+ *    Copyright (C) IBM Corp. 2006
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ *		 Gerald Schaefer (gerald.schaefer@de.ibm.com)
+ */
+
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <asm/uaccess.h>
+#include <asm/futex.h>
+
+#ifndef __s390x__
+#define AHI	"ahi"
+#define ALR	"alr"
+#define CLR	"clr"
+#define LHI	"lhi"
+#define SLR	"slr"
+#else
+#define AHI	"aghi"
+#define ALR	"algr"
+#define CLR	"clgr"
+#define LHI	"lghi"
+#define SLR	"slgr"
+#endif
+
+size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
+{
+	unsigned long tmp1, tmp2;
+
+	tmp1 = -256UL;
+	asm volatile(
+		"0: mvcp  0(%0,%2),0(%1),%3\n"
+		"   jz    5f\n"
+		"1:"ALR"  %0,%3\n"
+		"   la    %1,256(%1)\n"
+		"   la    %2,256(%2)\n"
+		"2: mvcp  0(%0,%2),0(%1),%3\n"
+		"   jnz   1b\n"
+		"   j     5f\n"
+		"3: la    %4,255(%1)\n"	/* %4 = ptr + 255 */
+		"  "LHI"  %3,-4096\n"
+		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
+		"  "SLR"  %4,%1\n"
+		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   jnh   6f\n"
+		"4: mvcp  0(%4,%2),0(%1),%3\n"
+		"  "SLR"  %0,%4\n"
+		"   j     6f\n"
+		"5:"SLR"  %0,%0\n"
+		"6: \n"
+		EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
+		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+		: : "cc", "memory");
+	return size;
+}
+
+size_t copy_from_user_std_small(size_t size, const void __user *ptr, void *x)
+{
+	unsigned long tmp1, tmp2;
+
+	tmp1 = 0UL;
+	asm volatile(
+		"0: mvcp  0(%0,%2),0(%1),%3\n"
+		"  "SLR"  %0,%0\n"
+		"   j     3f\n"
+		"1: la    %4,255(%1)\n" /* %4 = ptr + 255 */
+		"  "LHI"  %3,-4096\n"
+		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
+		"  "SLR"  %4,%1\n"
+		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   jnh   3f\n"
+		"2: mvcp  0(%4,%2),0(%1),%3\n"
+		"  "SLR"  %0,%4\n"
+		"3:\n"
+		EX_TABLE(0b,1b) EX_TABLE(2b,3b)
+		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+		: : "cc", "memory");
+	return size;
+}
+
+size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
+{
+	unsigned long tmp1, tmp2;
+
+	tmp1 = -256UL;
+	asm volatile(
+		"0: mvcs  0(%0,%1),0(%2),%3\n"
+		"   jz    5f\n"
+		"1:"ALR"  %0,%3\n"
+		"   la    %1,256(%1)\n"
+		"   la    %2,256(%2)\n"
+		"2: mvcs  0(%0,%1),0(%2),%3\n"
+		"   jnz   1b\n"
+		"   j     5f\n"
+		"3: la    %4,255(%1)\n" /* %4 = ptr + 255 */
+		"  "LHI"  %3,-4096\n"
+		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
+		"  "SLR"  %4,%1\n"
+		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   jnh   6f\n"
+		"4: mvcs  0(%4,%1),0(%2),%3\n"
+		"  "SLR"  %0,%4\n"
+		"   j     6f\n"
+		"5:"SLR"  %0,%0\n"
+		"6: \n"
+		EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
+		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+		: : "cc", "memory");
+	return size;
+}
+
+size_t copy_to_user_std_small(size_t size, void __user *ptr, const void *x)
+{
+	unsigned long tmp1, tmp2;
+
+	tmp1 = 0UL;
+	asm volatile(
+		"0: mvcs  0(%0,%1),0(%2),%3\n"
+		"  "SLR"  %0,%0\n"
+		"   j     3f\n"
+		"1: la    %4,255(%1)\n" /* ptr + 255 */
+		"  "LHI"  %3,-4096\n"
+		"   nr    %4,%3\n"	/* (ptr + 255) & -4096UL */
+		"  "SLR"  %4,%1\n"
+		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   jnh   3f\n"
+		"2: mvcs  0(%4,%1),0(%2),%3\n"
+		"  "SLR"  %0,%4\n"
+		"3:\n"
+		EX_TABLE(0b,1b) EX_TABLE(2b,3b)
+		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+		: : "cc", "memory");
+	return size;
+}
+
+size_t copy_in_user_std(size_t size, void __user *to, const void __user *from)
+{
+	unsigned long tmp1;
+
+	asm volatile(
+		"  "AHI"  %0,-1\n"
+		"   jo    5f\n"
+		"   sacf  256\n"
+		"   bras  %3,3f\n"
+		"0:"AHI"  %0,257\n"
+		"1: mvc   0(1,%1),0(%2)\n"
+		"   la    %1,1(%1)\n"
+		"   la    %2,1(%2)\n"
+		"  "AHI"  %0,-1\n"
+		"   jnz   1b\n"
+		"   j     5f\n"
+		"2: mvc   0(256,%1),0(%2)\n"
+		"   la    %1,256(%1)\n"
+		"   la    %2,256(%2)\n"
+		"3:"AHI"  %0,-256\n"
+		"   jnm   2b\n"
+		"4: ex    %0,1b-0b(%3)\n"
+		"   sacf  0\n"
+		"5: "SLR"  %0,%0\n"
+		"6:\n"
+		EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
+		: "+a" (size), "+a" (to), "+a" (from), "=a" (tmp1)
+		: : "cc", "memory");
+	return size;
+}
+
+size_t clear_user_std(size_t size, void __user *to)
+{
+	unsigned long tmp1, tmp2;
+
+	asm volatile(
+		"  "AHI"  %0,-1\n"
+		"   jo    5f\n"
+		"   sacf  256\n"
+		"   bras  %3,3f\n"
+		"   xc    0(1,%1),0(%1)\n"
+		"0:"AHI"  %0,257\n"
+		"   la    %2,255(%1)\n" /* %2 = ptr + 255 */
+		"   srl   %2,12\n"
+		"   sll   %2,12\n"	/* %2 = (ptr + 255) & -4096 */
+		"  "SLR"  %2,%1\n"
+		"  "CLR"  %0,%2\n"	/* clear crosses next page boundary? */
+		"   jnh   5f\n"
+		"  "AHI"  %2,-1\n"
+		"1: ex    %2,0(%3)\n"
+		"  "AHI"  %2,1\n"
+		"  "SLR"  %0,%2\n"
+		"   j     5f\n"
+		"2: xc    0(256,%1),0(%1)\n"
+		"   la    %1,256(%1)\n"
+		"3:"AHI"  %0,-256\n"
+		"   jnm   2b\n"
+		"4: ex    %0,0(%3)\n"
+		"   sacf  0\n"
+		"5: "SLR"  %0,%0\n"
+		"6:\n"
+		EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
+		: "+a" (size), "+a" (to), "=a" (tmp1), "=a" (tmp2)
+		: : "cc", "memory");
+	return size;
+}
+
+size_t strnlen_user_std(size_t size, const char __user *src)
+{
+	register unsigned long reg0 asm("0") = 0UL;
+	unsigned long tmp1, tmp2;
+
+	asm volatile(
+		"   la    %2,0(%1)\n"
+		"   la    %3,0(%0,%1)\n"
+		"  "SLR"  %0,%0\n"
+		"   sacf  256\n"
+		"0: srst  %3,%2\n"
+		"   jo    0b\n"
+		"   la    %0,1(%3)\n"	/* strnlen_user results includes \0 */
+		"  "SLR"  %0,%1\n"
+		"1: sacf  0\n"
+		EX_TABLE(0b,1b)
+		: "+a" (size), "+a" (src), "=a" (tmp1), "=a" (tmp2)
+		: "d" (reg0) : "cc", "memory");
+	return size;
+}
+
+size_t strncpy_from_user_std(size_t size, const char __user *src, char *dst)
+{
+	register unsigned long reg0 asm("0") = 0UL;
+	unsigned long tmp1, tmp2;
+
+	asm volatile(
+		"   la    %3,0(%1)\n"
+		"   la    %4,0(%0,%1)\n"
+		"   sacf  256\n"
+		"0: srst  %4,%3\n"
+		"   jo    0b\n"
+		"   sacf  0\n"
+		"   la    %0,0(%4)\n"
+		"   jh    1f\n"		/* found \0 in string ? */
+		"  "AHI"  %4,1\n"	/* include \0 in copy */
+		"1:"SLR"  %0,%1\n"	/* %0 = return length (without \0) */
+		"  "SLR"  %4,%1\n"	/* %4 = copy length (including \0) */
+		"2: mvcp  0(%4,%2),0(%1),%5\n"
+		"   jz    9f\n"
+		"3:"AHI"  %4,-256\n"
+		"   la    %1,256(%1)\n"
+		"   la    %2,256(%2)\n"
+		"4: mvcp  0(%4,%2),0(%1),%5\n"
+		"   jnz   3b\n"
+		"   j     9f\n"
+		"7: sacf  0\n"
+		"8:"LHI"  %0,%6\n"
+		"9:\n"
+		EX_TABLE(0b,7b) EX_TABLE(2b,8b) EX_TABLE(4b,8b)
+		: "+a" (size), "+a" (src), "+d" (dst), "=a" (tmp1), "=a" (tmp2)
+		: "d" (reg0), "K" (-EFAULT) : "cc", "memory");
+	return size;
+}
+
+#define __futex_atomic_op(insn, ret, oldval, newval, uaddr, oparg)	\
+	asm volatile(							\
+		"   sacf  256\n"					\
+		"0: l     %1,0(%6)\n"					\
+		"1:"insn						\
+		"2: cs    %1,%2,0(%6)\n"				\
+		"3: jl    1b\n"						\
+		"   lhi   %0,0\n"					\
+		"4: sacf  0\n"						\
+		EX_TABLE(0b,4b) EX_TABLE(2b,4b) EX_TABLE(3b,4b)		\
+		: "=d" (ret), "=&d" (oldval), "=&d" (newval),		\
+		  "=m" (*uaddr)						\
+		: "0" (-EFAULT), "d" (oparg), "a" (uaddr),		\
+		  "m" (*uaddr) : "cc");
+
+int futex_atomic_op(int op, int __user *uaddr, int oparg, int *old)
+{
+	int oldval = 0, newval, ret;
+
+	inc_preempt_count();
+
+	switch (op) {
+	case FUTEX_OP_SET:
+		__futex_atomic_op("lr %2,%5\n",
+				  ret, oldval, newval, uaddr, oparg);
+		break;
+	case FUTEX_OP_ADD:
+		__futex_atomic_op("lr %2,%1\nar %2,%5\n",
+				  ret, oldval, newval, uaddr, oparg);
+		break;
+	case FUTEX_OP_OR:
+		__futex_atomic_op("lr %2,%1\nor %2,%5\n",
+				  ret, oldval, newval, uaddr, oparg);
+		break;
+	case FUTEX_OP_ANDN:
+		__futex_atomic_op("lr %2,%1\nnr %2,%5\n",
+				  ret, oldval, newval, uaddr, oparg);
+		break;
+	case FUTEX_OP_XOR:
+		__futex_atomic_op("lr %2,%1\nxr %2,%5\n",
+				  ret, oldval, newval, uaddr, oparg);
+		break;
+	default:
+		ret = -ENOSYS;
+	}
+	dec_preempt_count();
+	*old = oldval;
+	return ret;
+}
+
+int futex_atomic_cmpxchg(int __user *uaddr, int oldval, int newval)
+{
+	int ret;
+
+	asm volatile(
+		"   sacf 256\n"
+		"   cs   %1,%4,0(%5)\n"
+		"0: lr   %0,%1\n"
+		"1: sacf 0\n"
+		EX_TABLE(0b,1b)
+		: "=d" (ret), "+d" (oldval), "=m" (*uaddr)
+		: "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
+		: "cc", "memory" );
+	return ret;
+}
+
+struct uaccess_ops uaccess_std = {
+	.copy_from_user = copy_from_user_std,
+	.copy_from_user_small = copy_from_user_std_small,
+	.copy_to_user = copy_to_user_std,
+	.copy_to_user_small = copy_to_user_std_small,
+	.copy_in_user = copy_in_user_std,
+	.clear_user = clear_user_std,
+	.strnlen_user = strnlen_user_std,
+	.strncpy_from_user = strncpy_from_user_std,
+	.futex_atomic_op = futex_atomic_op,
+	.futex_atomic_cmpxchg = futex_atomic_cmpxchg,
+};
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index ceea51cff03..786a44dba5b 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -53,22 +53,6 @@ static void cmm_timer_fn(unsigned long);
 static void cmm_set_timer(void);
 
 static long
-cmm_strtoul(const char *cp, char **endp)
-{
-	unsigned int base = 10;
-
-	if (*cp == '0') {
-		base = 8;
-		cp++;
-		if ((*cp == 'x' || *cp == 'X') && isxdigit(cp[1])) {
-			base = 16;
-			cp++;
-		}
-	}
-	return simple_strtoul(cp, endp, base);
-}
-
-static long
 cmm_alloc_pages(long pages, long *counter, struct cmm_page_array **list)
 {
 	struct cmm_page_array *pa;
@@ -276,7 +260,7 @@ cmm_pages_handler(ctl_table *ctl, int write, struct file *filp,
 			return -EFAULT;
 		buf[sizeof(buf) - 1] = '\0';
 		cmm_skip_blanks(buf, &p);
-		pages = cmm_strtoul(p, &p);
+		pages = simple_strtoul(p, &p, 0);
 		if (ctl == &cmm_table[0])
 			cmm_set_pages(pages);
 		else
@@ -317,9 +301,9 @@ cmm_timeout_handler(ctl_table *ctl, int write, struct file *filp,
 			return -EFAULT;
 		buf[sizeof(buf) - 1] = '\0';
 		cmm_skip_blanks(buf, &p);
-		pages = cmm_strtoul(p, &p);
+		pages = simple_strtoul(p, &p, 0);
 		cmm_skip_blanks(p, &p);
-		seconds = cmm_strtoul(p, &p);
+		seconds = simple_strtoul(p, &p, 0);
 		cmm_set_timeout(pages, seconds);
 	} else {
 		len = sprintf(buf, "%ld %ld\n",
@@ -382,24 +366,24 @@ cmm_smsg_target(char *from, char *msg)
 	if (strncmp(msg, "SHRINK", 6) == 0) {
 		if (!cmm_skip_blanks(msg + 6, &msg))
 			return;
-		pages = cmm_strtoul(msg, &msg);
+		pages = simple_strtoul(msg, &msg, 0);
 		cmm_skip_blanks(msg, &msg);
 		if (*msg == '\0')
 			cmm_set_pages(pages);
 	} else if (strncmp(msg, "RELEASE", 7) == 0) {
 		if (!cmm_skip_blanks(msg + 7, &msg))
 			return;
-		pages = cmm_strtoul(msg, &msg);
+		pages = simple_strtoul(msg, &msg, 0);
 		cmm_skip_blanks(msg, &msg);
 		if (*msg == '\0')
 			cmm_add_timed_pages(pages);
 	} else if (strncmp(msg, "REUSE", 5) == 0) {
 		if (!cmm_skip_blanks(msg + 5, &msg))
 			return;
-		pages = cmm_strtoul(msg, &msg);
+		pages = simple_strtoul(msg, &msg, 0);
 		if (!cmm_skip_blanks(msg, &msg))
 			return;
-		seconds = cmm_strtoul(msg, &msg);
+		seconds = simple_strtoul(msg, &msg, 0);
 		cmm_skip_blanks(msg, &msg);
 		if (*msg == '\0')
 			cmm_set_timeout(pages, seconds);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 7cd82575813..44f0cda7e72 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -25,10 +25,12 @@
 #include <linux/console.h>
 #include <linux/module.h>
 #include <linux/hardirq.h>
+#include <linux/kprobes.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
+#include <asm/kdebug.h>
 
 #ifndef CONFIG_64BIT
 #define __FAIL_ADDR_MASK 0x7ffff000
@@ -48,6 +50,38 @@ extern int sysctl_userprocess_debug;
 
 extern void die(const char *,struct pt_regs *,long);
 
+#ifdef CONFIG_KPROBES
+ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
+int register_page_fault_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
+}
+
+int unregister_page_fault_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
+}
+
+static inline int notify_page_fault(enum die_val val, const char *str,
+			struct pt_regs *regs, long err, int trap, int sig)
+{
+	struct die_args args = {
+		.regs = regs,
+		.str = str,
+		.err = err,
+		.trapnr = trap,
+		.signr = sig
+	};
+	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
+}
+#else
+static inline int notify_page_fault(enum die_val val, const char *str,
+			struct pt_regs *regs, long err, int trap, int sig)
+{
+	return NOTIFY_DONE;
+}
+#endif
+
 extern spinlock_t timerlist_lock;
 
 /*
@@ -159,7 +193,7 @@ static void do_sigsegv(struct pt_regs *regs, unsigned long error_code,
  *   11       Page translation     ->  Not present       (nullification)
  *   3b       Region third trans.  ->  Not present       (nullification)
  */
-static inline void
+static inline void __kprobes
 do_exception(struct pt_regs *regs, unsigned long error_code, int is_protection)
 {
         struct task_struct *tsk;
@@ -173,6 +207,10 @@ do_exception(struct pt_regs *regs, unsigned long error_code, int is_protection)
         tsk = current;
         mm = tsk->mm;
 	
+	if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
+					SIGSEGV) == NOTIFY_STOP)
+		return;
+
 	/* 
          * Check for low-address protection.  This needs to be treated
 	 * as a special case because the translation exception code 
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 6e6b6de7777..cfd9b8f7a52 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -108,16 +108,23 @@ void __init paging_init(void)
         unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE;
         static const int ssm_mask = 0x04000000L;
 	unsigned long ro_start_pfn, ro_end_pfn;
+	unsigned long zones_size[MAX_NR_ZONES];
 
 	ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata);
 	ro_end_pfn = PFN_UP((unsigned long)&__end_rodata);
 
+	memset(zones_size, 0, sizeof(zones_size));
+	zones_size[ZONE_DMA] = max_low_pfn;
+	free_area_init_node(0, &contig_page_data, zones_size,
+			    __pa(PAGE_OFFSET) >> PAGE_SHIFT,
+			    zholes_size);
+
 	/* unmap whole virtual address space */
 	
         pg_dir = swapper_pg_dir;
 
-	for (i=0;i<KERNEL_PGD_PTRS;i++) 
-	        pmd_clear((pmd_t*)pg_dir++);
+	for (i = 0; i < PTRS_PER_PGD; i++)
+		pmd_clear((pmd_t *) pg_dir++);
 		
 	/*
 	 * map whole physical memory to virtual memory (identity mapping) 
@@ -131,10 +138,7 @@ void __init paging_init(void)
                  */
 		pg_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE);
 
-                pg_dir->pgd0 =  (_PAGE_TABLE | __pa(pg_table));
-                pg_dir->pgd1 =  (_PAGE_TABLE | (__pa(pg_table)+1024));
-                pg_dir->pgd2 =  (_PAGE_TABLE | (__pa(pg_table)+2048));
-                pg_dir->pgd3 =  (_PAGE_TABLE | (__pa(pg_table)+3072));
+		pmd_populate_kernel(&init_mm, (pmd_t *) pg_dir, pg_table);
                 pg_dir++;
 
                 for (tmp = 0 ; tmp < PTRS_PER_PTE ; tmp++,pg_table++) {
@@ -143,8 +147,8 @@ void __init paging_init(void)
 			else
 				pte = pfn_pte(pfn, PAGE_KERNEL);
                         if (pfn >= max_low_pfn)
-                                pte_clear(&init_mm, 0, &pte);
-                        set_pte(pg_table, pte);
+				pte_val(pte) = _PAGE_TYPE_EMPTY;
+			set_pte(pg_table, pte);
                         pfn++;
                 }
         }
@@ -159,16 +163,6 @@ void __init paging_init(void)
 			     : : "m" (pgdir_k), "m" (ssm_mask));
 
         local_flush_tlb();
-
-	{
-		unsigned long zones_size[MAX_NR_ZONES];
-
-		memset(zones_size, 0, sizeof(zones_size));
-		zones_size[ZONE_DMA] = max_low_pfn;
-		free_area_init_node(0, &contig_page_data, zones_size,
-				    __pa(PAGE_OFFSET) >> PAGE_SHIFT,
-				    zholes_size);
-	}
         return;
 }
 
@@ -236,10 +230,8 @@ void __init paging_init(void)
 					pte = pfn_pte(pfn, __pgprot(_PAGE_RO));
 				else
 					pte = pfn_pte(pfn, PAGE_KERNEL);
-                                if (pfn >= max_low_pfn) {
-                                        pte_clear(&init_mm, 0, &pte); 
-                                        continue;
-                                }
+				if (pfn >= max_low_pfn)
+					pte_val(pte) = _PAGE_TYPE_EMPTY;
                                 set_pte(pt_dir, pte);
                                 pfn++;
                         }
diff --git a/arch/x86_64/crypto/Makefile b/arch/x86_64/crypto/Makefile
index 426d20f4b72..15b538a8b7f 100644
--- a/arch/x86_64/crypto/Makefile
+++ b/arch/x86_64/crypto/Makefile
@@ -5,5 +5,8 @@
 # 
 
 obj-$(CONFIG_CRYPTO_AES_X86_64) += aes-x86_64.o
+obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o
 
 aes-x86_64-y := aes-x86_64-asm.o aes.o
+twofish-x86_64-y := twofish-x86_64-asm.o twofish.o
+
diff --git a/arch/x86_64/crypto/aes.c b/arch/x86_64/crypto/aes.c
index 68866fab37a..5cdb13ea5cc 100644
--- a/arch/x86_64/crypto/aes.c
+++ b/arch/x86_64/crypto/aes.c
@@ -228,13 +228,14 @@ static void __init gen_tabs(void)
 }
 
 static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-		       unsigned int key_len, u32 *flags)
+		       unsigned int key_len)
 {
 	struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
 	const __le32 *key = (const __le32 *)in_key;
+	u32 *flags = &tfm->crt_flags;
 	u32 i, j, t, u, v, w;
 
-	if (key_len != 16 && key_len != 24 && key_len != 32) {
+	if (key_len % 8) {
 		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
 		return -EINVAL;
 	}
diff --git a/arch/x86_64/crypto/twofish-x86_64-asm.S b/arch/x86_64/crypto/twofish-x86_64-asm.S
new file mode 100644
index 00000000000..35974a58661
--- /dev/null
+++ b/arch/x86_64/crypto/twofish-x86_64-asm.S
@@ -0,0 +1,324 @@
+/***************************************************************************
+*   Copyright (C) 2006 by Joachim Fritschi, <jfritschi@freenet.de>        *
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+*   This program is distributed in the hope that it will be useful,       *
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+*   GNU General Public License for more details.                          *
+*                                                                         *
+*   You should have received a copy of the GNU General Public License     *
+*   along with this program; if not, write to the                         *
+*   Free Software Foundation, Inc.,                                       *
+*   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+***************************************************************************/
+
+.file "twofish-x86_64-asm.S"
+.text
+
+#include <asm/asm-offsets.h>
+
+#define a_offset	0
+#define b_offset	4
+#define c_offset	8
+#define d_offset	12
+
+/* Structure of the crypto context struct*/
+
+#define s0	0	/* S0 Array 256 Words each */
+#define s1	1024	/* S1 Array */
+#define s2	2048	/* S2 Array */
+#define s3	3072	/* S3 Array */
+#define w	4096	/* 8 whitening keys (word) */
+#define k	4128	/* key 1-32 ( word ) */
+
+/* define a few register aliases to allow macro substitution */
+
+#define R0     %rax
+#define R0D    %eax
+#define R0B    %al
+#define R0H    %ah
+
+#define R1     %rbx
+#define R1D    %ebx
+#define R1B    %bl
+#define R1H    %bh
+
+#define R2     %rcx
+#define R2D    %ecx
+#define R2B    %cl
+#define R2H    %ch
+
+#define R3     %rdx
+#define R3D    %edx
+#define R3B    %dl
+#define R3H    %dh
+
+
+/* performs input whitening */
+#define input_whitening(src,context,offset)\
+	xor	w+offset(context),	src;
+
+/* performs input whitening */
+#define output_whitening(src,context,offset)\
+	xor	w+16+offset(context),	src;
+
+
+/*
+ * a input register containing a (rotated 16)
+ * b input register containing b
+ * c input register containing c
+ * d input register containing d (already rol $1)
+ * operations on a and b are interleaved to increase performance
+ */
+#define encrypt_round(a,b,c,d,round)\
+	movzx	b ## B,		%edi;\
+	mov	s1(%r11,%rdi,4),%r8d;\
+	movzx	a ## B,		%edi;\
+	mov	s2(%r11,%rdi,4),%r9d;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	s2(%r11,%rdi,4),%r8d;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s3(%r11,%rdi,4),%r9d;\
+	movzx	b ## B,		%edi;\
+	xor	s3(%r11,%rdi,4),%r8d;\
+	movzx	a ## B,		%edi;\
+	xor	(%r11,%rdi,4),	%r9d;\
+	movzx	b ## H,		%edi;\
+	ror	$15,		b ## D;\
+	xor	(%r11,%rdi,4),	%r8d;\
+	movzx	a ## H,		%edi;\
+	xor	s1(%r11,%rdi,4),%r9d;\
+	add	%r8d,		%r9d;\
+	add	%r9d,		%r8d;\
+	add	k+round(%r11),	%r9d;\
+	xor	%r9d,		c ## D;\
+	rol	$15,		c ## D;\
+	add	k+4+round(%r11),%r8d;\
+	xor	%r8d,		d ## D;
+
+/*
+ * a input register containing a(rotated 16)
+ * b input register containing b
+ * c input register containing c
+ * d input register containing d (already rol $1)
+ * operations on a and b are interleaved to increase performance
+ * during the round a and b are prepared for the output whitening
+ */
+#define encrypt_last_round(a,b,c,d,round)\
+	mov	b ## D,		%r10d;\
+	shl	$32,		%r10;\
+	movzx	b ## B,		%edi;\
+	mov	s1(%r11,%rdi,4),%r8d;\
+	movzx	a ## B,		%edi;\
+	mov	s2(%r11,%rdi,4),%r9d;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	s2(%r11,%rdi,4),%r8d;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s3(%r11,%rdi,4),%r9d;\
+	movzx	b ## B,		%edi;\
+	xor	s3(%r11,%rdi,4),%r8d;\
+	movzx	a ## B,		%edi;\
+	xor	(%r11,%rdi,4),	%r9d;\
+	xor	a,		%r10;\
+	movzx	b ## H,		%edi;\
+	xor	(%r11,%rdi,4),	%r8d;\
+	movzx	a ## H,		%edi;\
+	xor	s1(%r11,%rdi,4),%r9d;\
+	add	%r8d,		%r9d;\
+	add	%r9d,		%r8d;\
+	add	k+round(%r11),	%r9d;\
+	xor	%r9d,		c ## D;\
+	ror	$1,		c ## D;\
+	add	k+4+round(%r11),%r8d;\
+	xor	%r8d,		d ## D
+
+/*
+ * a input register containing a
+ * b input register containing b (rotated 16)
+ * c input register containing c (already rol $1)
+ * d input register containing d
+ * operations on a and b are interleaved to increase performance
+ */
+#define decrypt_round(a,b,c,d,round)\
+	movzx	a ## B,		%edi;\
+	mov	(%r11,%rdi,4),	%r9d;\
+	movzx	b ## B,		%edi;\
+	mov	s3(%r11,%rdi,4),%r8d;\
+	movzx	a ## H,		%edi;\
+	ror	$16,		a ## D;\
+	xor	s1(%r11,%rdi,4),%r9d;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	(%r11,%rdi,4),	%r8d;\
+	movzx	a ## B,		%edi;\
+	xor	s2(%r11,%rdi,4),%r9d;\
+	movzx	b ## B,		%edi;\
+	xor	s1(%r11,%rdi,4),%r8d;\
+	movzx	a ## H,		%edi;\
+	ror	$15,		a ## D;\
+	xor	s3(%r11,%rdi,4),%r9d;\
+	movzx	b ## H,		%edi;\
+	xor	s2(%r11,%rdi,4),%r8d;\
+	add	%r8d,		%r9d;\
+	add	%r9d,		%r8d;\
+	add	k+round(%r11),	%r9d;\
+	xor	%r9d,		c ## D;\
+	add	k+4+round(%r11),%r8d;\
+	xor	%r8d,		d ## D;\
+	rol	$15,		d ## D;
+
+/*
+ * a input register containing a
+ * b input register containing b
+ * c input register containing c (already rol $1)
+ * d input register containing d
+ * operations on a and b are interleaved to increase performance
+ * during the round a and b are prepared for the output whitening
+ */
+#define decrypt_last_round(a,b,c,d,round)\
+	movzx	a ## B,		%edi;\
+	mov	(%r11,%rdi,4),	%r9d;\
+	movzx	b ## B,		%edi;\
+	mov	s3(%r11,%rdi,4),%r8d;\
+	movzx	b ## H,		%edi;\
+	ror	$16,		b ## D;\
+	xor	(%r11,%rdi,4),	%r8d;\
+	movzx	a ## H,		%edi;\
+	mov	b ## D,		%r10d;\
+	shl	$32,		%r10;\
+	xor	a,		%r10;\
+	ror	$16,		a ## D;\
+	xor	s1(%r11,%rdi,4),%r9d;\
+	movzx	b ## B,		%edi;\
+	xor	s1(%r11,%rdi,4),%r8d;\
+	movzx	a ## B,		%edi;\
+	xor	s2(%r11,%rdi,4),%r9d;\
+	movzx	b ## H,		%edi;\
+	xor	s2(%r11,%rdi,4),%r8d;\
+	movzx	a ## H,		%edi;\
+	xor	s3(%r11,%rdi,4),%r9d;\
+	add	%r8d,		%r9d;\
+	add	%r9d,		%r8d;\
+	add	k+round(%r11),	%r9d;\
+	xor	%r9d,		c ## D;\
+	add	k+4+round(%r11),%r8d;\
+	xor	%r8d,		d ## D;\
+	ror	$1,		d ## D;
+
+.align 8
+.global twofish_enc_blk
+.global twofish_dec_blk
+
+twofish_enc_blk:
+	pushq    R1
+
+	/* %rdi contains the crypto tfm adress */
+	/* %rsi contains the output adress */
+	/* %rdx contains the input adress */
+	add	$crypto_tfm_ctx_offset, %rdi	/* set ctx adress */
+	/* ctx adress is moved to free one non-rex register
+	as target for the 8bit high operations */
+	mov	%rdi,		%r11
+
+	movq	(R3),	R1
+	movq	8(R3),	R3
+	input_whitening(R1,%r11,a_offset)
+	input_whitening(R3,%r11,c_offset)
+	mov	R1D,	R0D
+	rol	$16,	R0D
+	shr	$32,	R1
+	mov	R3D,	R2D
+	shr	$32,	R3
+	rol	$1,	R3D
+
+	encrypt_round(R0,R1,R2,R3,0);
+	encrypt_round(R2,R3,R0,R1,8);
+	encrypt_round(R0,R1,R2,R3,2*8);
+	encrypt_round(R2,R3,R0,R1,3*8);
+	encrypt_round(R0,R1,R2,R3,4*8);
+	encrypt_round(R2,R3,R0,R1,5*8);
+	encrypt_round(R0,R1,R2,R3,6*8);
+	encrypt_round(R2,R3,R0,R1,7*8);
+	encrypt_round(R0,R1,R2,R3,8*8);
+	encrypt_round(R2,R3,R0,R1,9*8);
+	encrypt_round(R0,R1,R2,R3,10*8);
+	encrypt_round(R2,R3,R0,R1,11*8);
+	encrypt_round(R0,R1,R2,R3,12*8);
+	encrypt_round(R2,R3,R0,R1,13*8);
+	encrypt_round(R0,R1,R2,R3,14*8);
+	encrypt_last_round(R2,R3,R0,R1,15*8);
+
+
+	output_whitening(%r10,%r11,a_offset)
+	movq	%r10,	(%rsi)
+
+	shl	$32,	R1
+	xor	R0,	R1
+
+	output_whitening(R1,%r11,c_offset)
+	movq	R1,	8(%rsi)
+
+	popq	R1
+	movq	$1,%rax
+	ret
+
+twofish_dec_blk:
+	pushq    R1
+
+	/* %rdi contains the crypto tfm adress */
+	/* %rsi contains the output adress */
+	/* %rdx contains the input adress */
+	add	$crypto_tfm_ctx_offset, %rdi	/* set ctx adress */
+	/* ctx adress is moved to free one non-rex register
+	as target for the 8bit high operations */
+	mov	%rdi,		%r11
+
+	movq	(R3),	R1
+	movq	8(R3),	R3
+	output_whitening(R1,%r11,a_offset)
+	output_whitening(R3,%r11,c_offset)
+	mov	R1D,	R0D
+	shr	$32,	R1
+	rol	$16,	R1D
+	mov	R3D,	R2D
+	shr	$32,	R3
+	rol	$1,	R2D
+
+	decrypt_round(R0,R1,R2,R3,15*8);
+	decrypt_round(R2,R3,R0,R1,14*8);
+	decrypt_round(R0,R1,R2,R3,13*8);
+	decrypt_round(R2,R3,R0,R1,12*8);
+	decrypt_round(R0,R1,R2,R3,11*8);
+	decrypt_round(R2,R3,R0,R1,10*8);
+	decrypt_round(R0,R1,R2,R3,9*8);
+	decrypt_round(R2,R3,R0,R1,8*8);
+	decrypt_round(R0,R1,R2,R3,7*8);
+	decrypt_round(R2,R3,R0,R1,6*8);
+	decrypt_round(R0,R1,R2,R3,5*8);
+	decrypt_round(R2,R3,R0,R1,4*8);
+	decrypt_round(R0,R1,R2,R3,3*8);
+	decrypt_round(R2,R3,R0,R1,2*8);
+	decrypt_round(R0,R1,R2,R3,1*8);
+	decrypt_last_round(R2,R3,R0,R1,0);
+
+	input_whitening(%r10,%r11,a_offset)
+	movq	%r10,	(%rsi)
+
+	shl	$32,	R1
+	xor	R0,	R1
+
+	input_whitening(R1,%r11,c_offset)
+	movq	R1,	8(%rsi)
+
+	popq	R1
+	movq	$1,%rax
+	ret
diff --git a/arch/x86_64/crypto/twofish.c b/arch/x86_64/crypto/twofish.c
new file mode 100644
index 00000000000..182d91d5cfb
--- /dev/null
+++ b/arch/x86_64/crypto/twofish.c
@@ -0,0 +1,97 @@
+/*
+ * Glue Code for optimized x86_64 assembler version of TWOFISH
+ *
+ * Originally Twofish for GPG
+ * By Matthew Skala <mskala@ansuz.sooke.bc.ca>, July 26, 1998
+ * 256-bit key length added March 20, 1999
+ * Some modifications to reduce the text size by Werner Koch, April, 1998
+ * Ported to the kerneli patch by Marc Mutz <Marc@Mutz.com>
+ * Ported to CryptoAPI by Colin Slater <hoho@tacomeat.net>
+ *
+ * The original author has disclaimed all copyright interest in this
+ * code and thus put it in the public domain. The subsequent authors
+ * have put this under the GNU General Public License.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ *
+ * This code is a "clean room" implementation, written from the paper
+ * _Twofish: A 128-Bit Block Cipher_ by Bruce Schneier, John Kelsey,
+ * Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson, available
+ * through http://www.counterpane.com/twofish.html
+ *
+ * For background information on multiplication in finite fields, used for
+ * the matrix operations in the key schedule, see the book _Contemporary
+ * Abstract Algebra_ by Joseph A. Gallian, especially chapter 22 in the
+ * Third Edition.
+ */
+
+#include <crypto/twofish.h>
+#include <linux/crypto.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+asmlinkage void twofish_enc_blk(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
+asmlinkage void twofish_dec_blk(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
+
+static void twofish_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	twofish_enc_blk(tfm, dst, src);
+}
+
+static void twofish_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	twofish_dec_blk(tfm, dst, src);
+}
+
+static struct crypto_alg alg = {
+	.cra_name		=	"twofish",
+	.cra_driver_name	=	"twofish-x86_64",
+	.cra_priority		=	200,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	TF_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct twofish_ctx),
+	.cra_alignmask		=	3,
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	TF_MIN_KEY_SIZE,
+			.cia_max_keysize	=	TF_MAX_KEY_SIZE,
+			.cia_setkey		=	twofish_setkey,
+			.cia_encrypt		=	twofish_encrypt,
+			.cia_decrypt		=	twofish_decrypt
+		}
+	}
+};
+
+static int __init init(void)
+{
+	return crypto_register_alg(&alg);
+}
+
+static void __exit fini(void)
+{
+	crypto_unregister_alg(&alg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION ("Twofish Cipher Algorithm, x86_64 asm optimized");
+MODULE_ALIAS("twofish");