Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	arch/x86/kernel/io_apic.c

16 files changed, 1067 insertions, 10 deletions

diff --git a/arch/sparc/prom/Makefile b/arch/sparc/prom/Makefile
index 8f7e18546c9..1b8c073adb4 100644
--- a/arch/sparc/prom/Makefile
+++ b/arch/sparc/prom/Makefile
@@ -1,6 +1,21 @@
 # Makefile for the Sun Boot PROM interface library under
 # Linux.
 #
+asflags := -ansi
+ccflags := -Werror
 
-lib-y := bootstr.o devmap.o devops.o init.o memory.o misc.o mp.o \
-	 palloc.o ranges.o segment.o console.o printf.o tree.o
+lib-y                 := bootstr_$(BITS).o
+lib-$(CONFIG_SPARC32) += devmap.o
+lib-y                 += devops_$(BITS).o
+lib-y                 += init_$(BITS).o
+lib-$(CONFIG_SPARC32) += memory.o
+lib-y                 += misc_$(BITS).o
+lib-$(CONFIG_SPARC32) += mp.o
+lib-$(CONFIG_SPARC32) += palloc.o
+lib-$(CONFIG_SPARC32) += ranges.o
+lib-$(CONFIG_SPARC32) += segment.o
+lib-y                 += console_$(BITS).o
+lib-y                 += printf.o
+lib-y                 += tree_$(BITS).o
+lib-$(CONFIG_SPARC64) += p1275.o
+lib-$(CONFIG_SPARC64) += cif.o
diff --git a/arch/sparc/prom/bootstr.c b/arch/sparc/prom/bootstr_32.c
index 916831da7e6..916831da7e6 100644
--- a/arch/sparc/prom/bootstr.c
+++ b/arch/sparc/prom/bootstr_32.c
diff --git a/arch/sparc/prom/bootstr_64.c b/arch/sparc/prom/bootstr_64.c
new file mode 100644
index 00000000000..ab9ccc63b38
--- /dev/null
+++ b/arch/sparc/prom/bootstr_64.c
@@ -0,0 +1,40 @@
+/*
+ * bootstr.c:  Boot string/argument acquisition from the PROM.
+ *
+ * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright(C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/string.h>
+#include <linux/init.h>
+#include <asm/oplib.h>
+
+/* WARNING: The boot loader knows that these next three variables come one right
+ *          after another in the .data section.  Do not move this stuff into
+ *          the .bss section or it will break things.
+ */
+
+#define BARG_LEN  256
+struct {
+	int bootstr_len;
+	int bootstr_valid;
+	char bootstr_buf[BARG_LEN];
+} bootstr_info = {
+	.bootstr_len = BARG_LEN,
+#ifdef CONFIG_CMDLINE
+	.bootstr_valid = 1,
+	.bootstr_buf = CONFIG_CMDLINE,
+#endif
+};
+
+char * __init
+prom_getbootargs(void)
+{
+	/* This check saves us from a panic when bootfd patches args. */
+	if (bootstr_info.bootstr_valid)
+		return bootstr_info.bootstr_buf;
+	prom_getstring(prom_chosen_node, "bootargs",
+		       bootstr_info.bootstr_buf, BARG_LEN);
+	bootstr_info.bootstr_valid = 1;
+	return bootstr_info.bootstr_buf;
+}
diff --git a/arch/sparc/prom/cif.S b/arch/sparc/prom/cif.S
new file mode 100644
index 00000000000..5f27ad779c0
--- /dev/null
+++ b/arch/sparc/prom/cif.S
@@ -0,0 +1,48 @@
+/* cif.S: PROM entry/exit assembler trampolines.
+ *
+ * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#include <asm/pstate.h>
+#include <asm/cpudata.h>
+#include <asm/thread_info.h>
+
+	.text
+	.globl	prom_cif_interface
+prom_cif_interface:
+	sethi	%hi(p1275buf), %o0
+	or	%o0, %lo(p1275buf), %o0
+	ldx	[%o0 + 0x010], %o1	! prom_cif_stack
+	save	%o1, -192, %sp
+	ldx	[%i0 + 0x008], %l2	! prom_cif_handler
+	mov	%g4, %l0
+	mov	%g5, %l1
+	mov	%g6, %l3
+	call	%l2
+	 add	%i0, 0x018, %o0		! prom_args
+	mov	%l0, %g4
+	mov	%l1, %g5
+	mov	%l3, %g6
+	ret
+	 restore
+
+	.globl	prom_cif_callback
+prom_cif_callback:
+	sethi	%hi(p1275buf), %o1
+	or	%o1, %lo(p1275buf), %o1
+	save	%sp, -192, %sp
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0)
+	ldx	[%g6 + TI_TASK], %g4
+	call	prom_world
+	 mov	0, %o0
+	ldx	[%i1 + 0x000], %l2
+	call	%l2
+	 mov	%i0, %o0
+	mov	%o0, %l1
+	call	prom_world
+	 mov	1, %o0
+	ret
+	 restore %l1, 0, %o0
+
diff --git a/arch/sparc/prom/console.c b/arch/sparc/prom/console_32.c
index b3075d73fc1..b3075d73fc1 100644
--- a/arch/sparc/prom/console.c
+++ b/arch/sparc/prom/console_32.c
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
new file mode 100644
index 00000000000..e1c3fc87484
--- /dev/null
+++ b/arch/sparc/prom/console_64.c
@@ -0,0 +1,74 @@
+/* console.c: Routines that deal with sending and receiving IO
+ *            to/from the current console device using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <linux/string.h>
+
+extern int prom_stdin, prom_stdout;
+
+/* Non blocking get character from console input device, returns -1
+ * if no input was taken.  This can be used for polling.
+ */
+inline int
+prom_nbgetchar(void)
+{
+	char inc;
+
+	if (p1275_cmd("read", P1275_ARG(1,P1275_ARG_OUT_BUF)|
+			      P1275_INOUT(3,1),
+			      prom_stdin, &inc, P1275_SIZE(1)) == 1)
+		return inc;
+	else
+		return -1;
+}
+
+/* Non blocking put character to console device, returns -1 if
+ * unsuccessful.
+ */
+inline int
+prom_nbputchar(char c)
+{
+	char outc;
+	
+	outc = c;
+	if (p1275_cmd("write", P1275_ARG(1,P1275_ARG_IN_BUF)|
+			       P1275_INOUT(3,1),
+			       prom_stdout, &outc, P1275_SIZE(1)) == 1)
+		return 0;
+	else
+		return -1;
+}
+
+/* Blocking version of get character routine above. */
+char
+prom_getchar(void)
+{
+	int character;
+	while((character = prom_nbgetchar()) == -1) ;
+	return (char) character;
+}
+
+/* Blocking version of put character routine above. */
+void
+prom_putchar(char c)
+{
+	prom_nbputchar(c);
+	return;
+}
+
+void
+prom_puts(const char *s, int len)
+{
+	p1275_cmd("write", P1275_ARG(1,P1275_ARG_IN_BUF)|
+			   P1275_INOUT(3,1),
+			   prom_stdout, s, P1275_SIZE(len));
+}
diff --git a/arch/sparc/prom/devops.c b/arch/sparc/prom/devops_32.c
index 9f1a95c91ad..9f1a95c91ad 100644
--- a/arch/sparc/prom/devops.c
+++ b/arch/sparc/prom/devops_32.c
diff --git a/arch/sparc/prom/devops_64.c b/arch/sparc/prom/devops_64.c
new file mode 100644
index 00000000000..9dbd803e46e
--- /dev/null
+++ b/arch/sparc/prom/devops_64.c
@@ -0,0 +1,41 @@
+/*
+ * devops.c:  Device operations using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* Open the device described by the string 'dstr'.  Returns the handle
+ * to that device used for subsequent operations on that device.
+ * Returns 0 on failure.
+ */
+int
+prom_devopen(const char *dstr)
+{
+	return p1275_cmd ("open", P1275_ARG(0,P1275_ARG_IN_STRING)|
+				  P1275_INOUT(1,1),
+				  dstr);
+}
+
+/* Close the device described by device handle 'dhandle'. */
+int
+prom_devclose(int dhandle)
+{
+	p1275_cmd ("close", P1275_INOUT(1,0), dhandle);
+	return 0;
+}
+
+/* Seek to specified location described by 'seekhi' and 'seeklo'
+ * for device 'dhandle'.
+ */
+void
+prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
+{
+	p1275_cmd ("seek", P1275_INOUT(3,1), dhandle, seekhi, seeklo);
+}
diff --git a/arch/sparc/prom/init.c b/arch/sparc/prom/init_32.c
index 873217c6d82..873217c6d82 100644
--- a/arch/sparc/prom/init.c
+++ b/arch/sparc/prom/init_32.c
diff --git a/arch/sparc/prom/init_64.c b/arch/sparc/prom/init_64.c
new file mode 100644
index 00000000000..7b00f89490a
--- /dev/null
+++ b/arch/sparc/prom/init_64.c
@@ -0,0 +1,57 @@
+/*
+ * init.c:  Initialize internal variables used by the PROM
+ *          library functions.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* OBP version string. */
+char prom_version[80];
+
+/* The root node of the prom device tree. */
+int prom_stdin, prom_stdout;
+int prom_chosen_node;
+
+/* You must call prom_init() before you attempt to use any of the
+ * routines in the prom library.  It returns 0 on success, 1 on
+ * failure.  It gets passed the pointer to the PROM vector.
+ */
+
+extern void prom_cif_init(void *, void *);
+
+void __init prom_init(void *cif_handler, void *cif_stack)
+{
+	int node;
+
+	prom_cif_init(cif_handler, cif_stack);
+
+	prom_chosen_node = prom_finddevice(prom_chosen_path);
+	if (!prom_chosen_node || prom_chosen_node == -1)
+		prom_halt();
+
+	prom_stdin = prom_getint(prom_chosen_node, "stdin");
+	prom_stdout = prom_getint(prom_chosen_node, "stdout");
+
+	node = prom_finddevice("/openprom");
+	if (!node || node == -1)
+		prom_halt();
+
+	prom_getstring(node, "version", prom_version, sizeof(prom_version));
+
+	prom_printf("\n");
+}
+
+void __init prom_init_report(void)
+{
+	printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
+	printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);
+}
diff --git a/arch/sparc/prom/misc.c b/arch/sparc/prom/misc_32.c
index 49b5057b960..cf6c3f6d36c 100644
--- a/arch/sparc/prom/misc.c
+++ b/arch/sparc/prom/misc_32.c
@@ -61,9 +61,7 @@ prom_cmdline(void)
 	restore_current();
 	install_linux_ticker();
 	spin_unlock_irqrestore(&prom_lock, flags);
-#ifdef CONFIG_SUN_AUXIO
 	set_auxio(AUXIO_LED, 0);
-#endif
 }
 
 /* Drop into the prom, but completely terminate the program.
diff --git a/arch/sparc/prom/misc_64.c b/arch/sparc/prom/misc_64.c
new file mode 100644
index 00000000000..9b0c0760901
--- /dev/null
+++ b/arch/sparc/prom/misc_64.c
@@ -0,0 +1,335 @@
+/*
+ * misc.c:  Miscellaneous prom functions that don't belong
+ *          anywhere else.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <asm/ldc.h>
+
+int prom_service_exists(const char *service_name)
+{
+	int err = p1275_cmd("test", P1275_ARG(0, P1275_ARG_IN_STRING) |
+			    P1275_INOUT(1, 1), service_name);
+
+	if (err)
+		return 0;
+	return 1;
+}
+
+void prom_sun4v_guest_soft_state(void)
+{
+	const char *svc = "SUNW,soft-state-supported";
+
+	if (!prom_service_exists(svc))
+		return;
+	p1275_cmd(svc, P1275_INOUT(0, 0));
+}
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void prom_reboot(const char *bcommand)
+{
+#ifdef CONFIG_SUN_LDOMS
+	if (ldom_domaining_enabled)
+		ldom_reboot(bcommand);
+#endif
+	p1275_cmd("boot", P1275_ARG(0, P1275_ARG_IN_STRING) |
+		  P1275_INOUT(1, 0), bcommand);
+}
+
+/* Forth evaluate the expression contained in 'fstring'. */
+void prom_feval(const char *fstring)
+{
+	if (!fstring || fstring[0] == 0)
+		return;
+	p1275_cmd("interpret", P1275_ARG(0, P1275_ARG_IN_STRING) |
+		  P1275_INOUT(1, 1), fstring);
+}
+
+#ifdef CONFIG_SMP
+extern void smp_capture(void);
+extern void smp_release(void);
+#endif
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void prom_cmdline(void)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+#ifdef CONFIG_SMP
+	smp_capture();
+#endif
+
+	p1275_cmd("enter", P1275_INOUT(0, 0));
+
+#ifdef CONFIG_SMP
+	smp_release();
+#endif
+
+	local_irq_restore(flags);
+}
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void prom_halt(void)
+{
+#ifdef CONFIG_SUN_LDOMS
+	if (ldom_domaining_enabled)
+		ldom_power_off();
+#endif
+again:
+	p1275_cmd("exit", P1275_INOUT(0, 0));
+	goto again; /* PROM is out to get me -DaveM */
+}
+
+void prom_halt_power_off(void)
+{
+#ifdef CONFIG_SUN_LDOMS
+	if (ldom_domaining_enabled)
+		ldom_power_off();
+#endif
+	p1275_cmd("SUNW,power-off", P1275_INOUT(0, 0));
+
+	/* if nothing else helps, we just halt */
+	prom_halt();
+}
+
+/* Set prom sync handler to call function 'funcp'. */
+void prom_setcallback(callback_func_t funcp)
+{
+	if (!funcp)
+		return;
+	p1275_cmd("set-callback", P1275_ARG(0, P1275_ARG_IN_FUNCTION) |
+		  P1275_INOUT(1, 1), funcp);
+}
+
+/* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
+ * format type.  'num_bytes' is the number of bytes that your idbuf
+ * has space for.  Returns 0xff on error.
+ */
+unsigned char prom_get_idprom(char *idbuf, int num_bytes)
+{
+	int len;
+
+	len = prom_getproplen(prom_root_node, "idprom");
+	if ((len >num_bytes) || (len == -1))
+		return 0xff;
+	if (!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
+		return idbuf[0];
+
+	return 0xff;
+}
+
+int prom_get_mmu_ihandle(void)
+{
+	int node, ret;
+
+	if (prom_mmu_ihandle_cache != 0)
+		return prom_mmu_ihandle_cache;
+
+	node = prom_finddevice(prom_chosen_path);
+	ret = prom_getint(node, prom_mmu_name);
+	if (ret == -1 || ret == 0)
+		prom_mmu_ihandle_cache = -1;
+	else
+		prom_mmu_ihandle_cache = ret;
+
+	return ret;
+}
+
+static int prom_get_memory_ihandle(void)
+{
+	static int memory_ihandle_cache;
+	int node, ret;
+
+	if (memory_ihandle_cache != 0)
+		return memory_ihandle_cache;
+
+	node = prom_finddevice("/chosen");
+	ret = prom_getint(node, "memory");
+	if (ret == -1 || ret == 0)
+		memory_ihandle_cache = -1;
+	else
+		memory_ihandle_cache = ret;
+
+	return ret;
+}
+
+/* Load explicit I/D TLB entries. */
+long prom_itlb_load(unsigned long index,
+		    unsigned long tte_data,
+		    unsigned long vaddr)
+{
+	return p1275_cmd(prom_callmethod_name,
+			 (P1275_ARG(0, P1275_ARG_IN_STRING) |
+			  P1275_ARG(2, P1275_ARG_IN_64B) |
+			  P1275_ARG(3, P1275_ARG_IN_64B) |
+			  P1275_INOUT(5, 1)),
+			 "SUNW,itlb-load",
+			 prom_get_mmu_ihandle(),
+			 /* And then our actual args are pushed backwards. */
+			 vaddr,
+			 tte_data,
+			 index);
+}
+
+long prom_dtlb_load(unsigned long index,
+		    unsigned long tte_data,
+		    unsigned long vaddr)
+{
+	return p1275_cmd(prom_callmethod_name,
+			 (P1275_ARG(0, P1275_ARG_IN_STRING) |
+			  P1275_ARG(2, P1275_ARG_IN_64B) |
+			  P1275_ARG(3, P1275_ARG_IN_64B) |
+			  P1275_INOUT(5, 1)),
+			 "SUNW,dtlb-load",
+			 prom_get_mmu_ihandle(),
+			 /* And then our actual args are pushed backwards. */
+			 vaddr,
+			 tte_data,
+			 index);
+}
+
+int prom_map(int mode, unsigned long size,
+	     unsigned long vaddr, unsigned long paddr)
+{
+	int ret = p1275_cmd(prom_callmethod_name,
+			    (P1275_ARG(0, P1275_ARG_IN_STRING) |
+			     P1275_ARG(3, P1275_ARG_IN_64B) |
+			     P1275_ARG(4, P1275_ARG_IN_64B) |
+			     P1275_ARG(6, P1275_ARG_IN_64B) |
+			     P1275_INOUT(7, 1)),
+			    prom_map_name,
+			    prom_get_mmu_ihandle(),
+			    mode,
+			    size,
+			    vaddr,
+			    0,
+			    paddr);
+
+	if (ret == 0)
+		ret = -1;
+	return ret;
+}
+
+void prom_unmap(unsigned long size, unsigned long vaddr)
+{
+	p1275_cmd(prom_callmethod_name,
+		  (P1275_ARG(0, P1275_ARG_IN_STRING) |
+		   P1275_ARG(2, P1275_ARG_IN_64B) |
+		   P1275_ARG(3, P1275_ARG_IN_64B) |
+		   P1275_INOUT(4, 0)),
+		  prom_unmap_name,
+		  prom_get_mmu_ihandle(),
+		  size,
+		  vaddr);
+}
+
+/* Set aside physical memory which is not touched or modified
+ * across soft resets.
+ */
+unsigned long prom_retain(const char *name,
+			  unsigned long pa_low, unsigned long pa_high,
+			  long size, long align)
+{
+	/* XXX I don't think we return multiple values correctly.
+	 * XXX OBP supposedly returns pa_low/pa_high here, how does
+	 * XXX it work?
+	 */
+
+	/* If align is zero, the pa_low/pa_high args are passed,
+	 * else they are not.
+	 */
+	if (align == 0)
+		return p1275_cmd("SUNW,retain",
+				 (P1275_ARG(0, P1275_ARG_IN_BUF) | P1275_INOUT(5, 2)),
+				 name, pa_low, pa_high, size, align);
+	else
+		return p1275_cmd("SUNW,retain",
+				 (P1275_ARG(0, P1275_ARG_IN_BUF) | P1275_INOUT(3, 2)),
+				 name, size, align);
+}
+
+/* Get "Unumber" string for the SIMM at the given
+ * memory address.  Usually this will be of the form
+ * "Uxxxx" where xxxx is a decimal number which is
+ * etched into the motherboard next to the SIMM slot
+ * in question.
+ */
+int prom_getunumber(int syndrome_code,
+		    unsigned long phys_addr,
+		    char *buf, int buflen)
+{
+	return p1275_cmd(prom_callmethod_name,
+			 (P1275_ARG(0, P1275_ARG_IN_STRING)	|
+			  P1275_ARG(3, P1275_ARG_OUT_BUF)	|
+			  P1275_ARG(6, P1275_ARG_IN_64B)	|
+			  P1275_INOUT(8, 2)),
+			 "SUNW,get-unumber", prom_get_memory_ihandle(),
+			 buflen, buf, P1275_SIZE(buflen),
+			 0, phys_addr, syndrome_code);
+}
+
+/* Power management extensions. */
+void prom_sleepself(void)
+{
+	p1275_cmd("SUNW,sleep-self", P1275_INOUT(0, 0));
+}
+
+int prom_sleepsystem(void)
+{
+	return p1275_cmd("SUNW,sleep-system", P1275_INOUT(0, 1));
+}
+
+int prom_wakeupsystem(void)
+{
+	return p1275_cmd("SUNW,wakeup-system", P1275_INOUT(0, 1));
+}
+
+#ifdef CONFIG_SMP
+void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg)
+{
+	p1275_cmd("SUNW,start-cpu", P1275_INOUT(3, 0), cpunode, pc, arg);
+}
+
+void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg)
+{
+	p1275_cmd("SUNW,start-cpu-by-cpuid", P1275_INOUT(3, 0),
+		  cpuid, pc, arg);
+}
+
+void prom_stopcpu_cpuid(int cpuid)
+{
+	p1275_cmd("SUNW,stop-cpu-by-cpuid", P1275_INOUT(1, 0),
+		  cpuid);
+}
+
+void prom_stopself(void)
+{
+	p1275_cmd("SUNW,stop-self", P1275_INOUT(0, 0));
+}
+
+void prom_idleself(void)
+{
+	p1275_cmd("SUNW,idle-self", P1275_INOUT(0, 0));
+}
+
+void prom_resumecpu(int cpunode)
+{
+	p1275_cmd("SUNW,resume-cpu", P1275_INOUT(1, 0), cpunode);
+}
+#endif
diff --git a/arch/sparc/prom/p1275.c b/arch/sparc/prom/p1275.c
new file mode 100644
index 00000000000..4b7c937bba6
--- /dev/null
+++ b/arch/sparc/prom/p1275.c
@@ -0,0 +1,151 @@
+/*
+ * p1275.c: Sun IEEE 1275 PROM low level interface routines
+ *
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <asm/spitfire.h>
+#include <asm/pstate.h>
+#include <asm/ldc.h>
+
+struct {
+	long prom_callback;			/* 0x00 */
+	void (*prom_cif_handler)(long *);	/* 0x08 */
+	unsigned long prom_cif_stack;		/* 0x10 */
+	unsigned long prom_args [23];		/* 0x18 */
+	char prom_buffer [3000];
+} p1275buf;
+
+extern void prom_world(int);
+
+extern void prom_cif_interface(void);
+extern void prom_cif_callback(void);
+
+/*
+ * This provides SMP safety on the p1275buf. prom_callback() drops this lock
+ * to allow recursuve acquisition.
+ */
+DEFINE_SPINLOCK(prom_entry_lock);
+
+long p1275_cmd(const char *service, long fmt, ...)
+{
+	char *p, *q;
+	unsigned long flags;
+	int nargs, nrets, i;
+	va_list list;
+	long attrs, x;
+	
+	p = p1275buf.prom_buffer;
+
+	spin_lock_irqsave(&prom_entry_lock, flags);
+
+	p1275buf.prom_args[0] = (unsigned long)p;		/* service */
+	strcpy (p, service);
+	p = (char *)(((long)(strchr (p, 0) + 8)) & ~7);
+	p1275buf.prom_args[1] = nargs = (fmt & 0x0f);		/* nargs */
+	p1275buf.prom_args[2] = nrets = ((fmt & 0xf0) >> 4); 	/* nrets */
+	attrs = fmt >> 8;
+	va_start(list, fmt);
+	for (i = 0; i < nargs; i++, attrs >>= 3) {
+		switch (attrs & 0x7) {
+		case P1275_ARG_NUMBER:
+			p1275buf.prom_args[i + 3] =
+						(unsigned)va_arg(list, long);
+			break;
+		case P1275_ARG_IN_64B:
+			p1275buf.prom_args[i + 3] =
+				va_arg(list, unsigned long);
+			break;
+		case P1275_ARG_IN_STRING:
+			strcpy (p, va_arg(list, char *));
+			p1275buf.prom_args[i + 3] = (unsigned long)p;
+			p = (char *)(((long)(strchr (p, 0) + 8)) & ~7);
+			break;
+		case P1275_ARG_OUT_BUF:
+			(void) va_arg(list, char *);
+			p1275buf.prom_args[i + 3] = (unsigned long)p;
+			x = va_arg(list, long);
+			i++; attrs >>= 3;
+			p = (char *)(((long)(p + (int)x + 7)) & ~7);
+			p1275buf.prom_args[i + 3] = x;
+			break;
+		case P1275_ARG_IN_BUF:
+			q = va_arg(list, char *);
+			p1275buf.prom_args[i + 3] = (unsigned long)p;
+			x = va_arg(list, long);
+			i++; attrs >>= 3;
+			memcpy (p, q, (int)x);
+			p = (char *)(((long)(p + (int)x + 7)) & ~7);
+			p1275buf.prom_args[i + 3] = x;
+			break;
+		case P1275_ARG_OUT_32B:
+			(void) va_arg(list, char *);
+			p1275buf.prom_args[i + 3] = (unsigned long)p;
+			p += 32;
+			break;
+		case P1275_ARG_IN_FUNCTION:
+			p1275buf.prom_args[i + 3] =
+					(unsigned long)prom_cif_callback;
+			p1275buf.prom_callback = va_arg(list, long);
+			break;
+		}
+	}
+	va_end(list);
+
+	prom_world(1);
+	prom_cif_interface();
+	prom_world(0);
+
+	attrs = fmt >> 8;
+	va_start(list, fmt);
+	for (i = 0; i < nargs; i++, attrs >>= 3) {
+		switch (attrs & 0x7) {
+		case P1275_ARG_NUMBER:
+			(void) va_arg(list, long);
+			break;
+		case P1275_ARG_IN_STRING:
+			(void) va_arg(list, char *);
+			break;
+		case P1275_ARG_IN_FUNCTION:
+			(void) va_arg(list, long);
+			break;
+		case P1275_ARG_IN_BUF:
+			(void) va_arg(list, char *);
+			(void) va_arg(list, long);
+			i++; attrs >>= 3;
+			break;
+		case P1275_ARG_OUT_BUF:
+			p = va_arg(list, char *);
+			x = va_arg(list, long);
+			memcpy (p, (char *)(p1275buf.prom_args[i + 3]), (int)x);
+			i++; attrs >>= 3;
+			break;
+		case P1275_ARG_OUT_32B:
+			p = va_arg(list, char *);
+			memcpy (p, (char *)(p1275buf.prom_args[i + 3]), 32);
+			break;
+		}
+	}
+	va_end(list);
+	x = p1275buf.prom_args [nargs + 3];
+
+	spin_unlock_irqrestore(&prom_entry_lock, flags);
+
+	return x;
+}
+
+void prom_cif_init(void *cif_handler, void *cif_stack)
+{
+	p1275buf.prom_cif_handler = (void (*)(long *))cif_handler;
+	p1275buf.prom_cif_stack = (unsigned long)cif_stack;
+}
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
index a36ab9c5ee0..660943ee4c2 100644
--- a/arch/sparc/prom/printf.c
+++ b/arch/sparc/prom/printf.c
@@ -2,6 +2,7 @@
  * printf.c:  Internal prom library printf facility.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  * Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
  *
  * We used to warn all over the code: DO NOT USE prom_printf(),
@@ -13,7 +14,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
 
 #include <asm/openprom.h>
 #include <asm/oplib.h>
@@ -34,7 +34,7 @@ prom_write(const char *buf, unsigned int n)
 }
 
 void
-prom_printf(char *fmt, ...)
+prom_printf(const char *fmt, ...)
 {
 	va_list args;
 	int i;
@@ -45,4 +45,3 @@ prom_printf(char *fmt, ...)
 
 	prom_write(ppbuf, i);
 }
-EXPORT_SYMBOL(prom_printf);
diff --git a/arch/sparc/prom/tree.c b/arch/sparc/prom/tree_32.c
index f228fe057b2..6d818735733 100644
--- a/arch/sparc/prom/tree.c
+++ b/arch/sparc/prom/tree_32.c
@@ -85,7 +85,7 @@ int prom_getsibling(int node)
 /* Return the length in bytes of property 'prop' at node 'node'.
  * Return -1 on error.
  */
-int prom_getproplen(int node, char *prop)
+int prom_getproplen(int node, const char *prop)
 {
 	int ret;
 	unsigned long flags;
@@ -104,7 +104,7 @@ int prom_getproplen(int node, char *prop)
  * 'buffer' which has a size of 'bufsize'.  If the acquisition
  * was successful the length will be returned, else -1 is returned.
  */
-int prom_getproperty(int node, char *prop, char *buffer, int bufsize)
+int prom_getproperty(int node, const char *prop, char *buffer, int bufsize)
 {
 	int plen, ret;
 	unsigned long flags;
@@ -303,7 +303,7 @@ int prom_node_has_property(int node, char *prop)
 /* Set property 'pname' at node 'node' to value 'value' which has a length
  * of 'size' bytes.  Return the number of bytes the prom accepted.
  */
-int prom_setprop(int node, char *pname, char *value, int size)
+int prom_setprop(int node, const char *pname, char *value, int size)
 {
 	unsigned long flags;
 	int ret;
diff --git a/arch/sparc/prom/tree_64.c b/arch/sparc/prom/tree_64.c
new file mode 100644
index 00000000000..281aea44790
--- /dev/null
+++ b/arch/sparc/prom/tree_64.c
@@ -0,0 +1,299 @@
+/*
+ * tree.c: Basic device tree traversal/scanning for the Linux
+ *         prom library.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/ldc.h>
+
+/* Return the child of node 'node' or zero if no this node has no
+ * direct descendent.
+ */
+inline int __prom_getchild(int node)
+{
+	return p1275_cmd ("child", P1275_INOUT(1, 1), node);
+}
+
+inline int prom_getchild(int node)
+{
+	int cnode;
+
+	if(node == -1) return 0;
+	cnode = __prom_getchild(node);
+	if(cnode == -1) return 0;
+	return (int)cnode;
+}
+
+inline int prom_getparent(int node)
+{
+	int cnode;
+
+	if(node == -1) return 0;
+	cnode = p1275_cmd ("parent", P1275_INOUT(1, 1), node);
+	if(cnode == -1) return 0;
+	return (int)cnode;
+}
+
+/* Return the next sibling of node 'node' or zero if no more siblings
+ * at this level of depth in the tree.
+ */
+inline int __prom_getsibling(int node)
+{
+	return p1275_cmd(prom_peer_name, P1275_INOUT(1, 1), node);
+}
+
+inline int prom_getsibling(int node)
+{
+	int sibnode;
+
+	if (node == -1)
+		return 0;
+	sibnode = __prom_getsibling(node);
+	if (sibnode == -1)
+		return 0;
+
+	return sibnode;
+}
+
+/* Return the length in bytes of property 'prop' at node 'node'.
+ * Return -1 on error.
+ */
+inline int prom_getproplen(int node, const char *prop)
+{
+	if((!node) || (!prop)) return -1;
+	return p1275_cmd ("getproplen", 
+			  P1275_ARG(1,P1275_ARG_IN_STRING)|
+			  P1275_INOUT(2, 1), 
+			  node, prop);
+}
+
+/* Acquire a property 'prop' at node 'node' and place it in
+ * 'buffer' which has a size of 'bufsize'.  If the acquisition
+ * was successful the length will be returned, else -1 is returned.
+ */
+inline int prom_getproperty(int node, const char *prop,
+			    char *buffer, int bufsize)
+{
+	int plen;
+
+	plen = prom_getproplen(node, prop);
+	if ((plen > bufsize) || (plen == 0) || (plen == -1)) {
+		return -1;
+	} else {
+		/* Ok, things seem all right. */
+		return p1275_cmd(prom_getprop_name, 
+				 P1275_ARG(1,P1275_ARG_IN_STRING)|
+				 P1275_ARG(2,P1275_ARG_OUT_BUF)|
+				 P1275_INOUT(4, 1), 
+				 node, prop, buffer, P1275_SIZE(plen));
+	}
+}
+
+/* Acquire an integer property and return its value.  Returns -1
+ * on failure.
+ */
+inline int prom_getint(int node, const char *prop)
+{
+	int intprop;
+
+	if(prom_getproperty(node, prop, (char *) &intprop, sizeof(int)) != -1)
+		return intprop;
+
+	return -1;
+}
+
+/* Acquire an integer property, upon error return the passed default
+ * integer.
+ */
+
+int prom_getintdefault(int node, const char *property, int deflt)
+{
+	int retval;
+
+	retval = prom_getint(node, property);
+	if(retval == -1) return deflt;
+
+	return retval;
+}
+
+/* Acquire a boolean property, 1=TRUE 0=FALSE. */
+int prom_getbool(int node, const char *prop)
+{
+	int retval;
+
+	retval = prom_getproplen(node, prop);
+	if(retval == -1) return 0;
+	return 1;
+}
+
+/* Acquire a property whose value is a string, returns a null
+ * string on error.  The char pointer is the user supplied string
+ * buffer.
+ */
+void prom_getstring(int node, const char *prop, char *user_buf, int ubuf_size)
+{
+	int len;
+
+	len = prom_getproperty(node, prop, user_buf, ubuf_size);
+	if(len != -1) return;
+	user_buf[0] = 0;
+	return;
+}
+
+
+/* Does the device at node 'node' have name 'name'?
+ * YES = 1   NO = 0
+ */
+int prom_nodematch(int node, const char *name)
+{
+	char namebuf[128];
+	prom_getproperty(node, "name", namebuf, sizeof(namebuf));
+	if(strcmp(namebuf, name) == 0) return 1;
+	return 0;
+}
+
+/* Search siblings at 'node_start' for a node with name
+ * 'nodename'.  Return node if successful, zero if not.
+ */
+int prom_searchsiblings(int node_start, const char *nodename)
+{
+
+	int thisnode, error;
+	char promlib_buf[128];
+
+	for(thisnode = node_start; thisnode;
+	    thisnode=prom_getsibling(thisnode)) {
+		error = prom_getproperty(thisnode, "name", promlib_buf,
+					 sizeof(promlib_buf));
+		/* Should this ever happen? */
+		if(error == -1) continue;
+		if(strcmp(nodename, promlib_buf)==0) return thisnode;
+	}
+
+	return 0;
+}
+
+/* Return the first property type for node 'node'.
+ * buffer should be at least 32B in length
+ */
+inline char *prom_firstprop(int node, char *buffer)
+{
+	*buffer = 0;
+	if(node == -1) return buffer;
+	p1275_cmd ("nextprop", P1275_ARG(2,P1275_ARG_OUT_32B)|
+			       P1275_INOUT(3, 0), 
+			       node, (char *) 0x0, buffer);
+	return buffer;
+}
+
+/* Return the property type string after property type 'oprop'
+ * at node 'node' .  Returns NULL string if no more
+ * property types for this node.
+ */
+inline char *prom_nextprop(int node, const char *oprop, char *buffer)
+{
+	char buf[32];
+
+	if(node == -1) {
+		*buffer = 0;
+		return buffer;
+	}
+	if (oprop == buffer) {
+		strcpy (buf, oprop);
+		oprop = buf;
+	}
+	p1275_cmd ("nextprop", P1275_ARG(1,P1275_ARG_IN_STRING)|
+				    P1275_ARG(2,P1275_ARG_OUT_32B)|
+				    P1275_INOUT(3, 0), 
+				    node, oprop, buffer); 
+	return buffer;
+}
+
+int
+prom_finddevice(const char *name)
+{
+	if (!name)
+		return 0;
+	return p1275_cmd(prom_finddev_name,
+			 P1275_ARG(0,P1275_ARG_IN_STRING)|
+			 P1275_INOUT(1, 1), 
+			 name);
+}
+
+int prom_node_has_property(int node, const char *prop)
+{
+	char buf [32];
+        
+	*buf = 0;
+	do {
+		prom_nextprop(node, buf, buf);
+		if(!strcmp(buf, prop))
+			return 1;
+	} while (*buf);
+	return 0;
+}
+                                                                                           
+/* Set property 'pname' at node 'node' to value 'value' which has a length
+ * of 'size' bytes.  Return the number of bytes the prom accepted.
+ */
+int
+prom_setprop(int node, const char *pname, char *value, int size)
+{
+	if (size == 0)
+		return 0;
+	if ((pname == 0) || (value == 0))
+		return 0;
+	
+#ifdef CONFIG_SUN_LDOMS
+	if (ldom_domaining_enabled) {
+		ldom_set_var(pname, value);
+		return 0;
+	}
+#endif
+	return p1275_cmd ("setprop", P1275_ARG(1,P1275_ARG_IN_STRING)|
+					  P1275_ARG(2,P1275_ARG_IN_BUF)|
+					  P1275_INOUT(4, 1), 
+					  node, pname, value, P1275_SIZE(size));
+}
+
+inline int prom_inst2pkg(int inst)
+{
+	int node;
+	
+	node = p1275_cmd ("instance-to-package", P1275_INOUT(1, 1), inst);
+	if (node == -1) return 0;
+	return node;
+}
+
+/* Return 'node' assigned to a particular prom 'path'
+ * FIXME: Should work for v0 as well
+ */
+int
+prom_pathtoinode(const char *path)
+{
+	int node, inst;
+
+	inst = prom_devopen (path);
+	if (inst == 0) return 0;
+	node = prom_inst2pkg (inst);
+	prom_devclose (inst);
+	if (node == -1) return 0;
+	return node;
+}
+
+int prom_ihandle2path(int handle, char *buffer, int bufsize)
+{
+	return p1275_cmd("instance-to-path",
+			 P1275_ARG(1,P1275_ARG_OUT_BUF)|
+			 P1275_INOUT(3, 1),
+			 handle, buffer, P1275_SIZE(bufsize));
+}