Merge Linux 2.6.23

4 files changed, 818 insertions, 0 deletions

diff --git a/arch/m32r/platforms/mappi2/Makefile b/arch/m32r/platforms/mappi2/Makefile
new file mode 100644
index 00000000000..0de59084f21
--- /dev/null
+++ b/arch/m32r/platforms/mappi2/Makefile
@@ -0,0 +1 @@
+obj-y	:= setup.o io.o
diff --git a/arch/m32r/platforms/mappi2/dot.gdbinit.vdec2 b/arch/m32r/platforms/mappi2/dot.gdbinit.vdec2
new file mode 100644
index 00000000000..797a830bd4b
--- /dev/null
+++ b/arch/m32r/platforms/mappi2/dot.gdbinit.vdec2
@@ -0,0 +1,233 @@
+# .gdbinit file
+# $Id: dot.gdbinit.vdec2,v 1.2 2004/11/11 02:03:15 takata Exp $
+
+# setting
+set width 0d70
+set radix 0d16
+use_debug_dma
+
+# Initialize SDRAM controller for Mappi
+define sdram_init
+  # SDIR0
+  set *(unsigned long *)0x00ef6008=0x00000182
+  # SDIR1
+  set *(unsigned long *)0x00ef600c=0x00000001
+  # Initialize wait
+  shell sleep 1
+  # Ch0-MOD
+  set *(unsigned long *)0x00ef602c=0x00000020
+  # Ch0-TR
+  set *(unsigned long *)0x00ef6028=0x00041302
+  # Ch0-ADR
+  set *(unsigned long *)0x00ef6020=0x08000004
+  # AutoRef On
+  set *(unsigned long *)0x00ef6004=0x00010705
+  # Access enable
+  set *(unsigned long *)0x00ef6024=0x00000001
+end
+document sdram_init
+  Mappi SDRAM controller initialization
+  0x08000000 - 0x0bffffff (64MB)
+end
+
+# Initialize SDRAM controller for Mappi
+define sdram_init2
+  # SDIR0
+  set *(unsigned long *)0x00ef6008=0x00000182
+  # Ch0-MOD
+  set *(unsigned long *)0x00ef602c=0x00000020
+  # Ch0-TR
+  set *(unsigned long *)0x00ef6028=0x00010002
+  # Ch0-ADR
+  set *(unsigned long *)0x00ef6020=0x08000004
+  # AutoRef On
+  set *(unsigned long *)0x00ef6004=0x00010107
+  # SDIR1
+  set *(unsigned long *)0x00ef600c=0x00000001
+  # Initialize wait
+  shell sleep 1
+  # Access enable
+  set *(unsigned long *)0x00ef6024=0x00000001
+  shell sleep 1
+end
+document sdram_init
+  Mappi SDRAM controller initialization
+  0x08000000 - 0x0bffffff (64MB)
+end
+
+# Initialize LAN controller for Mappi
+define lanc_init
+  # Set BSEL1 (BSEL3 for the Chaos's bselc)
+  #set *(unsigned long *)0x00ef5004 = 0x0fff330f
+  #set *(unsigned long *)0x00ef5004 = 0x01113301
+
+#  set *(unsigned long *)0x00ef5004 = 0x02011101
+#  set *(unsigned long *)0x00ef5004 = 0x04441104
+
+  # BSEL5
+#  set *(unsigned long *)0x00ef5014 = 0x0ccc310c
+#  set *(unsigned long *)0x00ef5014 = 0x0303310f
+#  set *(unsigned long *)0x00ef5014 = 0x01011102 -> NG
+#  set *(unsigned long *)0x00ef5014 = 0x03033103
+
+ set *(unsigned long *)0x00ef500c = 0x0b0b1304
+ set *(unsigned long *)0x00ef5010 = 0x03033302
+# set *(unsigned long *)0x00ef5018 = 0x02223302
+end
+
+# MMU enable
+define mmu_enable
+  set $evb=0x88000000
+  set *(unsigned long *)0xffff0024=1
+end
+
+# MMU disable
+define mmu_disable
+  set $evb=0
+  set *(unsigned long *)0xffff0024=0
+end
+
+# Show TLB entries
+define show_tlb_entries
+  set $i = 0
+  set $addr = $arg0
+  while ($i < 0d16 )
+    set $tlb_tag = *(unsigned long*)$addr
+    set $tlb_data = *(unsigned long*)($addr + 4)
+    printf " [%2d] 0x%08lx : 0x%08lx - 0x%08lx\n", $i, $addr, $tlb_tag, $tlb_data
+    set $i = $i + 1
+    set $addr = $addr + 8
+  end
+end
+define itlb
+  set $itlb=0xfe000000
+  show_tlb_entries $itlb
+end
+define dtlb
+  set $dtlb=0xfe000800
+  show_tlb_entries $dtlb
+end
+
+# Cache ON
+define set_cache_type
+  set $mctype = (void*)0xfffffff8
+# chaos
+# set *(unsigned long *)($mctype) = 0x0000c000
+# m32102 i-cache only
+  set *(unsigned long *)($mctype) = 0x00008000
+# m32102 d-cache only
+#  set *(unsigned long *)($mctype) = 0x00004000
+end
+define cache_on
+  set $param = (void*)0x08001000
+  set *(unsigned long *)($param) = 0x60ff6102
+end
+
+
+# Show current task structure
+define show_current
+  set $current = $spi & 0xffffe000
+  printf "$current=0x%08lX\n",$current
+  print *(struct task_struct *)$current
+end
+
+# Show user assigned task structure
+define show_task
+  set $task = $arg0 & 0xffffe000
+  printf "$task=0x%08lX\n",$task
+  print *(struct task_struct *)$task
+end
+document show_task
+  Show user assigned task structure
+  arg0 : task structure address
+end
+
+# Show M32R registers
+define show_regs
+  printf " R0[0x%08lX]   R1[0x%08lX]   R2[0x%08lX]   R3[0x%08lX]\n",$r0,$r1,$r2,$r3
+  printf " R4[0x%08lX]   R5[0x%08lX]   R6[0x%08lX]   R7[0x%08lX]\n",$r4,$r5,$r6,$r7
+  printf " R8[0x%08lX]   R9[0x%08lX]  R10[0x%08lX]  R11[0x%08lX]\n",$r8,$r9,$r10,$r11
+  printf "R12[0x%08lX]   FP[0x%08lX]   LR[0x%08lX]   SP[0x%08lX]\n",$r12,$fp,$lr,$sp
+  printf "PSW[0x%08lX]  CBR[0x%08lX]  SPI[0x%08lX]  SPU[0x%08lX]\n",$psw,$cbr,$spi,$spu
+  printf "BPC[0x%08lX]   PC[0x%08lX] ACCL[0x%08lX] ACCH[0x%08lX]\n",$bpc,$pc,$accl,$acch
+  printf "EVB[0x%08lX]\n",$evb
+
+  set $mests = *(unsigned long *)0xffff000c
+  set $mdeva = *(unsigned long *)0xffff0010
+  printf "MESTS[0x%08lX] MDEVA[0x%08lX]\n",$mests,$mdeva
+end
+
+
+# Setup all
+define setup
+  sdram_init
+#  lanc_init
+#  dispc_init
+#  set $evb=0x08000000
+end
+
+# Load modules
+define load_modules
+  use_debug_dma
+  load
+#  load busybox.mot
+end
+
+# Set kernel parameters
+define set_kernel_parameters
+  set $param = (void*)0x08001000
+
+  ## MOUNT_ROOT_RDONLY
+  set {long}($param+0x00)=0
+  ## RAMDISK_FLAGS
+  #set {long}($param+0x04)=0
+  ## ORIG_ROOT_DEV
+  #set {long}($param+0x08)=0x00000100
+  ## LOADER_TYPE
+  #set {long}($param+0x0C)=0
+  ## INITRD_START
+  set {long}($param+0x10)=0x082a0000
+  ## INITRD_SIZE
+  set {long}($param+0x14)=0d6200000
+
+  # M32R_CPUCLK
+  set *(unsigned long *)($param + 0x0018) = 0d25000000
+  # M32R_BUSCLK
+  set *(unsigned long *)($param + 0x001c) = 0d25000000
+  # M32R_TIMER_DIVIDE
+  set *(unsigned long *)($param + 0x0020) = 0d128
+
+
+ set {char[0x200]}($param + 0x100) = "console=ttyS0,115200n8x root=/dev/nfsroot nfsroot=192.168.0.1:/project/m32r-linux/export/root.2.6 nfsaddrs=192.168.0.102:192.168.0.1:192.168.0.1:255.255.255.0:mappi: \0"
+
+
+end
+
+# Boot
+define boot
+  set_kernel_parameters
+  debug_chaos
+  set $pc=0x08002000
+  set $fp=0
+  del b
+  si
+end
+
+# Restart
+define restart
+  sdireset
+  sdireset
+  setup
+  load_modules
+  boot
+end
+
+sdireset
+sdireset
+file vmlinux
+target m32rsdi
+
+restart
+boot
+
+
diff --git a/arch/m32r/platforms/mappi2/io.c b/arch/m32r/platforms/mappi2/io.c
new file mode 100644
index 00000000000..da58960b3f8
--- /dev/null
+++ b/arch/m32r/platforms/mappi2/io.c
@@ -0,0 +1,383 @@
+/*
+ *  linux/arch/m32r/platforms/mappi2/io.c
+ *
+ *  Typical I/O routines for Mappi2 board.
+ *
+ *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
+ *                           Hitoshi Yamamoto, Mamoru Sakugawa
+ */
+
+#include <asm/m32r.h>
+#include <asm/page.h>
+#include <asm/io.h>
+#include <asm/byteorder.h>
+
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+#include <linux/types.h>
+
+#define M32R_PCC_IOMAP_SIZE 0x1000
+
+#define M32R_PCC_IOSTART0 0x1000
+#define M32R_PCC_IOEND0   (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)
+
+extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
+extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
+extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
+extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
+#endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
+
+#define PORT2ADDR(port)      _port2addr(port)
+#define PORT2ADDR_NE(port)   _port2addr_ne(port)
+#define PORT2ADDR_USB(port)  _port2addr_usb(port)
+
+static inline void *_port2addr(unsigned long port)
+{
+	return (void *)(port | NONCACHE_OFFSET);
+}
+
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+static inline void *__port2addr_ata(unsigned long port)
+{
+	static int	dummy_reg;
+
+	switch (port) {
+	case 0x1f0:	return (void *)(0x0c002000 | NONCACHE_OFFSET);
+	case 0x1f1:	return (void *)(0x0c012800 | NONCACHE_OFFSET);
+	case 0x1f2:	return (void *)(0x0c012002 | NONCACHE_OFFSET);
+	case 0x1f3:	return (void *)(0x0c012802 | NONCACHE_OFFSET);
+	case 0x1f4:	return (void *)(0x0c012004 | NONCACHE_OFFSET);
+	case 0x1f5:	return (void *)(0x0c012804 | NONCACHE_OFFSET);
+	case 0x1f6:	return (void *)(0x0c012006 | NONCACHE_OFFSET);
+	case 0x1f7:	return (void *)(0x0c012806 | NONCACHE_OFFSET);
+	case 0x3f6:	return (void *)(0x0c01200e | NONCACHE_OFFSET);
+	default: 	return (void *)&dummy_reg;
+	}
+}
+#endif
+
+#define LAN_IOSTART	(0x300 | NONCACHE_OFFSET)
+#define LAN_IOEND	(0x320 | NONCACHE_OFFSET)
+#ifdef CONFIG_CHIP_OPSP
+static inline void *_port2addr_ne(unsigned long port)
+{
+	return (void *)(port + 0x10000000);
+}
+#else
+static inline void *_port2addr_ne(unsigned long port)
+{
+	return (void *)(port + 0x04000000);
+}
+#endif
+static inline void *_port2addr_usb(unsigned long port)
+{
+	return (void *)(port + NONCACHE_OFFSET + 0x14000000);
+}
+static inline void delay(void)
+{
+	__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
+}
+
+/*
+ * NIC I/O function
+ */
+
+static inline unsigned char _ne_inb(void *portp)
+{
+	return (unsigned char) *(volatile unsigned char *)portp;
+}
+
+static inline unsigned short _ne_inw(void *portp)
+{
+	return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
+}
+
+static inline void _ne_insb(void *portp, void * addr, unsigned long count)
+{
+	unsigned char *buf = addr;
+
+	while (count--)
+		*buf++ = *(volatile unsigned char *)portp;
+}
+
+static inline void _ne_outb(unsigned char b, void *portp)
+{
+	*(volatile unsigned char *)portp = (unsigned char)b;
+}
+
+static inline void _ne_outw(unsigned short w, void *portp)
+{
+	*(volatile unsigned short *)portp = cpu_to_le16(w);
+}
+
+unsigned char _inb(unsigned long port)
+{
+	if (port >= LAN_IOSTART && port < LAN_IOEND)
+		return _ne_inb(PORT2ADDR_NE(port));
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		return *(volatile unsigned char *)__port2addr_ata(port);
+	}
+#endif
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		unsigned char b;
+		pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
+		return b;
+	} else
+#endif
+
+	return *(volatile unsigned char *)PORT2ADDR(port);
+}
+
+unsigned short _inw(unsigned long port)
+{
+	if (port >= LAN_IOSTART && port < LAN_IOEND)
+		return _ne_inw(PORT2ADDR_NE(port));
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		return *(volatile unsigned short *)__port2addr_ata(port);
+	}
+#endif
+#if defined(CONFIG_USB)
+	else if (port >= 0x340 && port < 0x3a0)
+		return *(volatile unsigned short *)PORT2ADDR_USB(port);
+#endif
+
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		unsigned short w;
+		pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
+		return w;
+	} else
+#endif
+	return *(volatile unsigned short *)PORT2ADDR(port);
+}
+
+unsigned long _inl(unsigned long port)
+{
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		unsigned long l;
+		pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
+		return l;
+	} else
+#endif
+	return *(volatile unsigned long *)PORT2ADDR(port);
+}
+
+unsigned char _inb_p(unsigned long port)
+{
+	unsigned char v = _inb(port);
+	delay();
+	return (v);
+}
+
+unsigned short _inw_p(unsigned long port)
+{
+	unsigned short v = _inw(port);
+	delay();
+	return (v);
+}
+
+unsigned long _inl_p(unsigned long port)
+{
+	unsigned long v = _inl(port);
+	delay();
+	return (v);
+}
+
+void _outb(unsigned char b, unsigned long port)
+{
+	if (port >= LAN_IOSTART && port < LAN_IOEND)
+		_ne_outb(b, PORT2ADDR_NE(port));
+	else
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		*(volatile unsigned char *)__port2addr_ata(port) = b;
+	} else
+#endif
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
+	} else
+#endif
+		*(volatile unsigned char *)PORT2ADDR(port) = b;
+}
+
+void _outw(unsigned short w, unsigned long port)
+{
+	if (port >= LAN_IOSTART && port < LAN_IOEND)
+		_ne_outw(w, PORT2ADDR_NE(port));
+	else
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		*(volatile unsigned short *)__port2addr_ata(port) = w;
+	} else
+#endif
+#if defined(CONFIG_USB)
+	if (port >= 0x340 && port < 0x3a0)
+		*(volatile unsigned short *)PORT2ADDR_USB(port) = w;
+	else
+#endif
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
+	} else
+#endif
+		*(volatile unsigned short *)PORT2ADDR(port) = w;
+}
+
+void _outl(unsigned long l, unsigned long port)
+{
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
+	} else
+#endif
+	*(volatile unsigned long *)PORT2ADDR(port) = l;
+}
+
+void _outb_p(unsigned char b, unsigned long port)
+{
+	_outb(b, port);
+	delay();
+}
+
+void _outw_p(unsigned short w, unsigned long port)
+{
+	_outw(w, port);
+	delay();
+}
+
+void _outl_p(unsigned long l, unsigned long port)
+{
+	_outl(l, port);
+	delay();
+}
+
+void _insb(unsigned int port, void * addr, unsigned long count)
+{
+	if (port >= LAN_IOSTART && port < LAN_IOEND)
+		_ne_insb(PORT2ADDR_NE(port), addr, count);
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		unsigned char *buf = addr;
+		unsigned char *portp = __port2addr_ata(port);
+		while (count--)
+			*buf++ = *(volatile unsigned char *)portp;
+	}
+#endif
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
+				count, 1);
+	}
+#endif
+	else {
+		unsigned char *buf = addr;
+		unsigned char *portp = PORT2ADDR(port);
+		while (count--)
+			*buf++ = *(volatile unsigned char *)portp;
+	}
+}
+
+void _insw(unsigned int port, void * addr, unsigned long count)
+{
+	unsigned short *buf = addr;
+	unsigned short *portp;
+
+	if (port >= LAN_IOSTART && port < LAN_IOEND) {
+		portp = PORT2ADDR_NE(port);
+		while (count--)
+			*buf++ = *(volatile unsigned short *)portp;
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
+				count, 1);
+#endif
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	} else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		portp = __port2addr_ata(port);
+		while (count--)
+			*buf++ = *(volatile unsigned short *)portp;
+#endif
+	} else {
+		portp = PORT2ADDR(port);
+		while (count--)
+			*buf++ = *(volatile unsigned short *)portp;
+	}
+}
+
+void _insl(unsigned int port, void * addr, unsigned long count)
+{
+	unsigned long *buf = addr;
+	unsigned long *portp;
+
+	portp = PORT2ADDR(port);
+	while (count--)
+		*buf++ = *(volatile unsigned long *)portp;
+}
+
+void _outsb(unsigned int port, const void * addr, unsigned long count)
+{
+	const unsigned char *buf = addr;
+	unsigned char *portp;
+
+	if (port >= LAN_IOSTART && port < LAN_IOEND) {
+		portp = PORT2ADDR_NE(port);
+		while (count--)
+			_ne_outb(*buf++, portp);
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	} else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		portp = __port2addr_ata(port);
+		while (count--)
+			*(volatile unsigned char *)portp = *buf++;
+#endif
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
+				 count, 1);
+#endif
+	} else {
+		portp = PORT2ADDR(port);
+		while (count--)
+			*(volatile unsigned char *)portp = *buf++;
+	}
+}
+
+void _outsw(unsigned int port, const void * addr, unsigned long count)
+{
+	const unsigned short *buf = addr;
+	unsigned short *portp;
+
+	if (port >= LAN_IOSTART && port < LAN_IOEND) {
+		portp = PORT2ADDR_NE(port);
+		while (count--)
+			*(volatile unsigned short *)portp = *buf++;
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+	} else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+		portp = __port2addr_ata(port);
+		while (count--)
+			*(volatile unsigned short *)portp = *buf++;
+#endif
+#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
+	} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
+		pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
+				 count, 1);
+#endif
+	} else {
+		portp = PORT2ADDR(port);
+		while (count--)
+			*(volatile unsigned short *)portp = *buf++;
+	}
+}
+
+void _outsl(unsigned int port, const void * addr, unsigned long count)
+{
+	const unsigned long *buf = addr;
+	unsigned char *portp;
+
+	portp = PORT2ADDR(port);
+	while (count--)
+		*(volatile unsigned long *)portp = *buf++;
+}
diff --git a/arch/m32r/platforms/mappi2/setup.c b/arch/m32r/platforms/mappi2/setup.c
new file mode 100644
index 00000000000..d87969c6356
--- /dev/null
+++ b/arch/m32r/platforms/mappi2/setup.c
@@ -0,0 +1,201 @@
+/*
+ *  linux/arch/m32r/platforms/mappi2/setup.c
+ *
+ *  Setup routines for Renesas MAPPI-II(M3A-ZA36) Board
+ *
+ *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
+ *                           Hitoshi Yamamoto, Mamoru Sakugawa
+ */
+
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/system.h>
+#include <asm/m32r.h>
+#include <asm/io.h>
+
+#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
+
+icu_data_t icu_data[NR_IRQS];
+
+static void disable_mappi2_irq(unsigned int irq)
+{
+	unsigned long port, data;
+
+	if ((irq == 0) ||(irq >= NR_IRQS))  {
+		printk("bad irq 0x%08x\n", irq);
+		return;
+	}
+	port = irq2port(irq);
+	data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
+	outl(data, port);
+}
+
+static void enable_mappi2_irq(unsigned int irq)
+{
+	unsigned long port, data;
+
+	if ((irq == 0) ||(irq >= NR_IRQS))  {
+		printk("bad irq 0x%08x\n", irq);
+		return;
+	}
+	port = irq2port(irq);
+	data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
+	outl(data, port);
+}
+
+static void mask_and_ack_mappi2(unsigned int irq)
+{
+	disable_mappi2_irq(irq);
+}
+
+static void end_mappi2_irq(unsigned int irq)
+{
+	enable_mappi2_irq(irq);
+}
+
+static unsigned int startup_mappi2_irq(unsigned int irq)
+{
+	enable_mappi2_irq(irq);
+	return (0);
+}
+
+static void shutdown_mappi2_irq(unsigned int irq)
+{
+	unsigned long port;
+
+	port = irq2port(irq);
+	outl(M32R_ICUCR_ILEVEL7, port);
+}
+
+static struct hw_interrupt_type mappi2_irq_type =
+{
+	.typename = "MAPPI2-IRQ",
+	.startup = startup_mappi2_irq,
+	.shutdown = shutdown_mappi2_irq,
+	.enable = enable_mappi2_irq,
+	.disable = disable_mappi2_irq,
+	.ack = mask_and_ack_mappi2,
+	.end = end_mappi2_irq
+};
+
+void __init init_IRQ(void)
+{
+#if defined(CONFIG_SMC91X)
+	/* INT0 : LAN controller (SMC91111) */
+	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_INT0].action = 0;
+	irq_desc[M32R_IRQ_INT0].depth = 1;
+	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
+	disable_mappi2_irq(M32R_IRQ_INT0);
+#endif  /* CONFIG_SMC91X */
+
+	/* MFT2 : system timer */
+	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_MFT2].action = 0;
+	irq_desc[M32R_IRQ_MFT2].depth = 1;
+	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
+	disable_mappi2_irq(M32R_IRQ_MFT2);
+
+#ifdef CONFIG_SERIAL_M32R_SIO
+	/* SIO0_R : uart receive data */
+	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].action = 0;
+	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
+	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
+	disable_mappi2_irq(M32R_IRQ_SIO0_R);
+
+	/* SIO0_S : uart send data */
+	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].action = 0;
+	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
+	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
+	disable_mappi2_irq(M32R_IRQ_SIO0_S);
+	/* SIO1_R : uart receive data */
+	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].action = 0;
+	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
+	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
+	disable_mappi2_irq(M32R_IRQ_SIO1_R);
+
+	/* SIO1_S : uart send data */
+	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].action = 0;
+	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
+	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
+	disable_mappi2_irq(M32R_IRQ_SIO1_S);
+#endif  /* CONFIG_M32R_USE_DBG_CONSOLE */
+
+#if defined(CONFIG_USB)
+	/* INT1 : USB Host controller interrupt */
+	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_INT1].action = 0;
+	irq_desc[M32R_IRQ_INT1].depth = 1;
+	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_ISMOD01;
+	disable_mappi2_irq(M32R_IRQ_INT1);
+#endif /* CONFIG_USB */
+
+	/* ICUCR40: CFC IREQ */
+	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].action = 0;
+	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
+	icu_data[PLD_IRQ_CFIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD01;
+	disable_mappi2_irq(PLD_IRQ_CFIREQ);
+
+#if defined(CONFIG_M32R_CFC)
+	/* ICUCR41: CFC Insert */
+	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
+	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
+	icu_data[PLD_IRQ_CFC_INSERT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD00;
+	disable_mappi2_irq(PLD_IRQ_CFC_INSERT);
+
+	/* ICUCR42: CFC Eject */
+	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
+	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
+	icu_data[PLD_IRQ_CFC_EJECT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
+	disable_mappi2_irq(PLD_IRQ_CFC_EJECT);
+#endif /* CONFIG_MAPPI2_CFC */
+}
+
+#define LAN_IOSTART     0x300
+#define LAN_IOEND       0x320
+static struct resource smc91x_resources[] = {
+	[0] = {
+		.start  = (LAN_IOSTART),
+		.end    = (LAN_IOEND),
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start  = M32R_IRQ_INT0,
+		.end    = M32R_IRQ_INT0,
+		.flags  = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device smc91x_device = {
+	.name		= "smc91x",
+	.id		= 0,
+	.num_resources  = ARRAY_SIZE(smc91x_resources),
+	.resource       = smc91x_resources,
+};
+
+static int __init platform_init(void)
+{
+	platform_device_register(&smc91x_device);
+	return 0;
+}
+arch_initcall(platform_init);