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openwrt-xburst/target/linux/coldfire/patches/008-mcfv4e_coldfire_code.patch
kaloz 343c185b7d use broken-out patches for the coldfire to make it easier to follow differences against the bsp 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16547 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-06-23 21:04:37 +00:00

4485 lines
113 KiB
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From 70b2bd01829b38a1a79caeda05d436b2e5fecf82 Mon Sep 17 00:00:00 2001
From: Kurt Mahan <kmahan@freescale.com>
Date: Wed, 31 Oct 2007 17:00:18 -0600
Subject: [PATCH] Core Coldfire/MCF5445x specific code.
LTIBName: mcfv4e-coldfire-code
Signed-off-by: Kurt Mahan <kmahan@freescale.com>
---
arch/m68k/coldfire/Makefile | 11 +
arch/m68k/coldfire/cache.c | 215 +++++++++
arch/m68k/coldfire/config.c | 420 ++++++++++++++++++
arch/m68k/coldfire/entry.S | 701 ++++++++++++++++++++++++++++++
arch/m68k/coldfire/head.S | 474 ++++++++++++++++++++
arch/m68k/coldfire/ints.c | 384 ++++++++++++++++
arch/m68k/coldfire/iomap.c | 54 +++
arch/m68k/coldfire/mcf5445x-pci.c | 427 ++++++++++++++++++
arch/m68k/coldfire/muldi3.S | 64 +++
arch/m68k/coldfire/pci.c | 245 +++++++++++
arch/m68k/coldfire/signal.c | 868 +++++++++++++++++++++++++++++++++++++
arch/m68k/coldfire/traps.c | 454 +++++++++++++++++++
arch/m68k/coldfire/vmlinux-cf.lds | 92 ++++
13 files changed, 4409 insertions(+), 0 deletions(-)
create mode 100644 arch/m68k/coldfire/Makefile
create mode 100644 arch/m68k/coldfire/cache.c
create mode 100644 arch/m68k/coldfire/config.c
create mode 100644 arch/m68k/coldfire/entry.S
create mode 100644 arch/m68k/coldfire/head.S
create mode 100644 arch/m68k/coldfire/ints.c
create mode 100644 arch/m68k/coldfire/iomap.c
create mode 100644 arch/m68k/coldfire/mcf5445x-pci.c
create mode 100644 arch/m68k/coldfire/muldi3.S
create mode 100644 arch/m68k/coldfire/pci.c
create mode 100644 arch/m68k/coldfire/signal.c
create mode 100644 arch/m68k/coldfire/traps.c
create mode 100644 arch/m68k/coldfire/vmlinux-cf.lds
--- /dev/null
+++ b/arch/m68k/coldfire/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for Linux arch/m68k/coldfire source directory
+#
+
+obj-y:= entry.o config.o cache.o signal.o muldi3.o traps.o ints.o
+
+ifneq ($(strip $(CONFIG_USB) $(CONFIG_USB_GADGET_MCF5445X)),)
+ obj-y += usb.o usb/
+endif
+
+obj-$(CONFIG_PCI) += pci.o mcf5445x-pci.o iomap.o
--- /dev/null
+++ b/arch/m68k/coldfire/cache.c
@@ -0,0 +1,215 @@
+/*
+ * linux/arch/m68k/coldifre/cache.c
+ *
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Copyright Freescale Semiconductor, Inc. 2007
+ *
+ * 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/interrupt.h>
+#include <asm/cfcache.h>
+#include <asm/coldfire.h>
+#include <asm/system.h>
+
+#define _DCACHE_SIZE (2*16384)
+#define _ICACHE_SIZE (2*16384)
+
+#define _SET_SHIFT 4
+
+/*
+ * Masks for cache sizes. Programming note: because the set size is a
+ * power of two, the mask is also the last address in the set.
+ */
+
+#define _DCACHE_SET_MASK ((_DCACHE_SIZE/64-1)<<_SET_SHIFT)
+#define _ICACHE_SET_MASK ((_ICACHE_SIZE/64-1)<<_SET_SHIFT)
+#define LAST_DCACHE_ADDR _DCACHE_SET_MASK
+#define LAST_ICACHE_ADDR _ICACHE_SET_MASK
+
+/************************************************************
+ * Routine to cleanly flush the cache, pushing all lines and
+ * invalidating them.
+ *
+ * The is the flash-resident version, used after copying the .text
+ * segment from flash to ram.
+ *************************************************************/
+void FLASHDcacheFlushInvalidate(void)
+ __attribute__ ((section (".text_loader")));
+
+void FLASHDcacheFlushInvalidate()
+{
+ unsigned long set;
+ unsigned long start_set;
+ unsigned long end_set;
+
+ start_set = 0;
+ end_set = (unsigned long)LAST_DCACHE_ADDR;
+
+ for (set = start_set; set < end_set; set += (0x10 - 3))
+ asm volatile("cpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)" : : "a" (set));
+}
+
+/************************************************************
+ * Routine to cleanly flush the cache, pushing all lines and
+ * invalidating them.
+ *
+ *************************************************************/
+void DcacheFlushInvalidate()
+{
+ unsigned long set;
+ unsigned long start_set;
+ unsigned long end_set;
+
+ start_set = 0;
+ end_set = (unsigned long)LAST_DCACHE_ADDR;
+
+ for (set = start_set; set < end_set; set += (0x10 - 3))
+ asm volatile("cpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)" : : "a" (set));
+}
+
+
+
+/******************************************************************************
+ * Routine to cleanly flush the a block of cache, pushing all relevant lines
+ * and invalidating them.
+ *
+ ******************************************************************************/
+void DcacheFlushInvalidateCacheBlock(void *start, unsigned long size)
+{
+ unsigned long set;
+ unsigned long start_set;
+ unsigned long end_set;
+
+ /* if size is bigger than the cache can store
+ * set the size to the maximum amount
+ */
+
+ if (size > LAST_DCACHE_ADDR)
+ size = LAST_DCACHE_ADDR;
+
+ start_set = ((unsigned long)start) & _DCACHE_SET_MASK;
+ end_set = ((unsigned long)(start+size-1)) & _DCACHE_SET_MASK;
+
+ if (start_set > end_set) {
+ /* from the begining to the lowest address */
+ for (set = 0; set <= end_set; set += (0x10 - 3))
+ asm volatile("cpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)" : : "a" (set));
+
+ /* next loop will finish the cache ie pass the hole */
+ end_set = LAST_DCACHE_ADDR;
+ }
+ for (set = start_set; set <= end_set; set += (0x10 - 3))
+ asm volatile("cpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%dc,(%0)" : : "a" (set));
+}
+
+
+void IcacheInvalidateCacheBlock(void *start, unsigned long size)
+{
+ unsigned long set;
+ unsigned long start_set;
+ unsigned long end_set;
+
+ /* if size is bigger than the cache can store
+ * set the size to the maximum ammount
+ */
+
+ if (size > LAST_ICACHE_ADDR)
+ size = LAST_ICACHE_ADDR;
+
+ start_set = ((unsigned long)start) & _ICACHE_SET_MASK;
+ end_set = ((unsigned long)(start+size-1)) & _ICACHE_SET_MASK;
+
+ if (start_set > end_set) {
+ /* from the begining to the lowest address */
+ for (set = 0; set <= end_set; set += (0x10 - 3))
+ asm volatile("cpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)" : : "a" (set));
+
+ /* next loop will finish the cache ie pass the hole */
+ end_set = LAST_ICACHE_ADDR;
+ }
+ for (set = start_set; set <= end_set; set += (0x10 - 3))
+ asm volatile("cpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)" : : "a" (set));
+}
+
+
+/********************************************************************
+ * Disable the data cache completely
+ ********************************************************************/
+void DcacheDisable(void)
+{
+ int newValue;
+ unsigned long flags;
+
+ local_save_flags(flags);
+ local_irq_disable();
+
+ DcacheFlushInvalidate(); /* begin by flushing the cache */
+ newValue = CACHE_DISABLE_MODE; /* disable it */
+ cacr_set(newValue);
+ local_irq_restore(flags);
+}
+
+/********************************************************************
+ * Unconditionally enable the data cache
+ ********************************************************************/
+void DcacheEnable(void)
+{
+ cacr_set(CACHE_INITIAL_MODE);
+}
+
+
+unsigned long shadow_cacr;
+
+void cacr_set(unsigned long x)
+{
+ shadow_cacr = x;
+
+ __asm__ __volatile__ ("movec %0, %%cacr"
+ : /* no outputs */
+ : "r" (shadow_cacr));
+}
+
+unsigned long cacr_get(void)
+{
+ return shadow_cacr;
+}
--- /dev/null
+++ b/arch/m68k/coldfire/config.c
@@ -0,0 +1,420 @@
+/*
+ * linux/arch/m68k/coldifre/config.c
+ *
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Copyright Freescale Semiconductor, Inc. 2007
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/bootmem.h>
+#include <linux/mm.h>
+#include <asm/bootinfo.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/cfcache.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/cfmmu.h>
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/movs.h>
+#include <asm/movs.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+#include <asm/mcf5445x_intc.h>
+#include <asm/mcf5445x_sdramc.h>
+#include <asm/mcf5445x_fbcs.h>
+#include <asm/mcf5445x_dtim.h>
+
+/* JKM -- testing */
+#include <linux/pfn.h>
+/* JKM */
+
+extern int get_irq_list(struct seq_file *p, void *v);
+extern char _text, _end;
+extern char _etext, _edata, __init_begin, __init_end;
+extern struct console mcfrs_console;
+extern char m68k_command_line[CL_SIZE];
+extern unsigned long availmem;
+
+static int irq_enable[NR_IRQS];
+unsigned long num_pages;
+
+void coldfire_sort_memrec(void)
+{
+ int i, j;
+
+ /* Sort the m68k_memory records by address */
+ for (i = 0; i < m68k_num_memory; ++i) {
+ for (j = i + 1; j < m68k_num_memory; ++j) {
+ if (m68k_memory[i].addr > m68k_memory[j].addr) {
+ struct mem_info tmp;
+ tmp = m68k_memory[i];
+ m68k_memory[i] = m68k_memory[j];
+ m68k_memory[j] = tmp;
+ }
+ }
+ }
+ /* Trim off discontiguous bits */
+ for (i = 1; i < m68k_num_memory; ++i) {
+ if ((m68k_memory[i-1].addr + m68k_memory[i-1].size) !=
+ m68k_memory[i].addr) {
+ printk(KERN_DEBUG "m68k_parse_bootinfo: addr gap between \
+ 0x%lx & 0x%lx\n",
+ m68k_memory[i-1].addr+m68k_memory[i-1].size,
+ m68k_memory[i].addr);
+ m68k_num_memory = i;
+ break;
+ }
+ }
+}
+
+int __init uboot_commandline(char *bootargs)
+{
+ int len = 0, cmd_line_len;
+ static struct uboot_record uboot_info;
+
+ extern unsigned long uboot_info_stk;
+
+ /* Add 0x80000000 to get post-remapped kernel memory location */
+ uboot_info.bd_info = (*(u32 *)(uboot_info_stk)) + 0x80000000;
+ uboot_info.initrd_start = (*(u32 *)(uboot_info_stk+4)) + 0x80000000;
+ uboot_info.initrd_end = (*(u32 *)(uboot_info_stk+8)) + 0x80000000;
+ uboot_info.cmd_line_start = (*(u32 *)(uboot_info_stk+12)) + 0x80000000;
+ uboot_info.cmd_line_stop = (*(u32 *)(uboot_info_stk+16)) + 0x80000000;
+
+ cmd_line_len = uboot_info.cmd_line_stop - uboot_info.cmd_line_start;
+ if ((cmd_line_len > 0) && (cmd_line_len < CL_SIZE-1))
+ len = (int)strncpy(bootargs, (char *)uboot_info.cmd_line_start,\
+ cmd_line_len);
+
+ return len;
+}
+
+/*
+ * This routine does things not done in the bootloader.
+ */
+#define DEFAULT_COMMAND_LINE "root=/dev/mtdblock1 rw rootfstype=jffs2 ip=none mtdparts=physmap-flash.0:5M(kernel)ro,-(jffs2)"
+asmlinkage void __init cf_early_init(void)
+{
+ struct bi_record *record = (struct bi_record *) &_end;
+
+ extern char _end;
+
+ SET_VBR((void *)MCF_RAMBAR1);
+
+ /* Mask all interrupts */
+ MCF_INTC0_IMRL = 0xFFFFFFFF;
+ MCF_INTC0_IMRH = 0xFFFFFFFF;
+ MCF_INTC1_IMRL = 0xFFFFFFFF;
+ MCF_INTC1_IMRH = 0xFFFFFFFF;
+
+#if defined(CONFIG_NOR_FLASH_BASE)
+ MCF_FBCS_CSAR(1) = CONFIG_NOR_FLASH_BASE;
+#else
+ MCF_FBCS_CSAR(1) = 0x00000000;
+#endif
+
+#if CONFIG_SDRAM_SIZE > (256*1024*1024)
+ /* Init optional SDRAM chip select */
+ MCF_SDRAMC_SDCS(1) = (256*1024*1024) | 0x1B;
+#endif
+
+ m68k_machtype = MACH_CFMMU;
+ m68k_fputype = FPU_CFV4E;
+ m68k_mmutype = MMU_CFV4E;
+ m68k_cputype = CPU_CFV4E;
+
+ m68k_num_memory = 0;
+ m68k_memory[m68k_num_memory].addr = CONFIG_SDRAM_BASE;
+ m68k_memory[m68k_num_memory++].size = CONFIG_SDRAM_SIZE;
+
+ if (!uboot_commandline(m68k_command_line)) {
+#if defined(CONFIG_BOOTPARAM)
+ strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE-1);
+#else
+ strcpy(m68k_command_line, DEFAULT_COMMAND_LINE);
+#endif
+ }
+
+
+#if defined(CONFIG_BLK_DEV_INITRD)
+ /* add initrd image */
+ record = (struct bi_record *) ((void *)record + record->size);
+ record->tag = BI_RAMDISK;
+ record->size = sizeof(record->tag) + sizeof(record->size)
+ + sizeof(record->data[0]) + sizeof(record->data[1]);
+#endif
+
+ /* Mark end of tags. */
+ record = (struct bi_record *) ((void *) record + record->size);
+ record->tag = 0;
+ record->data[0] = 0;
+ record->data[1] = 0;
+ record->size = sizeof(record->tag) + sizeof(record->size)
+ + sizeof(record->data[0]) + sizeof(record->data[1]);
+
+ /* Invalidate caches via CACR */
+ cacr_set(CACHE_DISABLE_MODE);
+
+ /* Turn on caches via CACR, enable EUSP */
+ cacr_set(CACHE_INITIAL_MODE);
+}
+
+void settimericr(unsigned int timer, unsigned int level)
+{
+ volatile unsigned char *icrp;
+ unsigned int icr;
+ unsigned char irq;
+
+ if (timer <= 2) {
+ switch (timer) {
+ case 2: irq = 33; icr = MCFSIM_ICR_TIMER2; break;
+ default: irq = 32; icr = MCFSIM_ICR_TIMER1; break;
+ }
+
+ icrp = (volatile unsigned char *) (icr);
+ *icrp = level;
+ coldfire_enable_irq0(irq);
+ }
+}
+
+/* Assembler routines */
+asmlinkage void buserr(void);
+asmlinkage void trap(void);
+asmlinkage void system_call(void);
+asmlinkage void inthandler(void);
+
+void __init coldfire_trap_init(void)
+{
+ int i = 0;
+ e_vector *vectors;
+
+ vectors = (e_vector *)MCF_RAMBAR1;
+ /*
+ * There is a common trap handler and common interrupt
+ * handler that handle almost every vector. We treat
+ * the system call and bus error special, they get their
+ * own first level handlers.
+ */
+ for (i = 3; (i <= 23); i++)
+ vectors[i] = trap;
+ for (i = 33; (i <= 63); i++)
+ vectors[i] = trap;
+ for (i = 24; (i <= 31); i++)
+ vectors[i] = inthandler;
+ for (i = 64; (i < 255); i++)
+ vectors[i] = inthandler;
+
+ vectors[255] = 0;
+ vectors[2] = buserr;
+ vectors[32] = system_call;
+}
+
+void coldfire_tick(void)
+{
+ /* Reset the ColdFire timer */
+ __raw_writeb(MCF_DTIM_DTER_CAP | MCF_DTIM_DTER_REF, MCF_DTIM0_DTER);
+}
+
+void __init coldfire_sched_init(irq_handler_t handler)
+{
+ unsigned int mcf_timerlevel = 5;
+ unsigned int mcf_timervector = 64+32;
+
+ __raw_writew(MCF_DTIM_DTMR_RST_RST, MCF_DTIM0_DTMR);
+ __raw_writel(((MCF_BUSCLK / 16) / HZ), MCF_DTIM0_DTRR);
+ __raw_writew(MCF_DTIM_DTMR_ORRI | MCF_DTIM_DTMR_CLK_DIV16 |
+ MCF_DTIM_DTMR_FRR | MCF_DTIM_DTMR_RST_EN, \
+ MCF_DTIM0_DTMR);
+
+ request_irq(mcf_timervector, handler, SA_INTERRUPT, \
+ "timer", (void *)MCF_DTIM0_DTMR);
+
+ settimericr(1, mcf_timerlevel);
+}
+
+int timerirqpending(int timer)
+{
+ unsigned int imr = 0;
+
+ switch (timer) {
+ case 1: imr = 0x1; break;
+ case 2: imr = 0x2; break;
+ default: break;
+ }
+
+ return (getiprh() & imr);
+}
+
+unsigned long coldfire_gettimeoffset(void)
+{
+ volatile unsigned long trr, tcn, offset;
+
+ tcn = __raw_readw(MCF_DTIM0_DTCN);
+ trr = __raw_readl(MCF_DTIM0_DTRR);
+ offset = (tcn * (1000000 / HZ)) / trr;
+
+ /* Check if we just wrapped the counters and maybe missed a tick */
+ if ((offset < (1000000 / HZ / 2)) && timerirqpending(1))
+ offset += 1000000 / HZ;
+ return offset;
+}
+
+void coldfire_reboot(void)
+{
+ /* disable interrupts and do a software reset */
+ asm("movew #0x2700, %%sr\n\t"
+ "moveb #0x80, %%d0\n\t"
+ "moveb %%d0, 0xfc0a0000\n\t"
+ : : : "%d0");
+}
+
+/* int coldfire_hwclk(int i, struct rtc_time *t)
+{
+ printk ("Real time clock needs porting.\n");
+ return 0;
+}*/
+
+static void coldfire_get_model(char *model)
+{
+ sprintf(model, "Version 4 ColdFire");
+}
+
+void coldfire_enable_irq(unsigned int vec)
+{
+ unsigned long flags;
+
+ vec -= 64;
+
+ if (((int)vec < 0) || (vec > 63)) {
+ printk(KERN_WARNING "enable_irq %d failed\n", vec);
+ return;
+ }
+
+ local_irq_save(flags);
+ irq_enable[vec]++;
+ if (vec < 32)
+ MCF_INTC0_IMRL &= ~(1 << vec);
+ else
+ MCF_INTC0_IMRH &= ~(1 << (vec - 32));
+ local_irq_restore(flags);
+}
+
+void coldfire_disable_irq(unsigned int vec)
+{
+ unsigned long flags;
+
+ vec -= 64;
+
+ if (((int)vec < 0) || (vec > 63)) {
+ printk(KERN_WARNING "disable_irq %d failed\n", vec);
+ return;
+ }
+
+ local_irq_save(flags);
+ if (--irq_enable[vec] == 0) {
+ if (vec < 32)
+ MCF_INTC0_IMRL |= (1 << vec);
+ else
+ MCF_INTC0_IMRH |= (1 << (vec - 32));
+
+ }
+ local_irq_restore(flags);
+}
+
+static void __init
+coldfire_bootmem_alloc(unsigned long memory_start, unsigned long memory_end)
+{
+ unsigned long base_pfn;
+
+ /* compute total pages in system */
+ num_pages = PAGE_ALIGN(memory_end - PAGE_OFFSET) >> PAGE_SHIFT;
+
+ /* align start/end to page boundries */
+ memory_start = PAGE_ALIGN(memory_start);
+ memory_end = memory_end & PAGE_MASK;
+
+ /* page numbers */
+ base_pfn = __pa(PAGE_OFFSET) >> PAGE_SHIFT;
+ min_low_pfn = __pa(memory_start) >> PAGE_SHIFT;
+ max_low_pfn = __pa(memory_end) >> PAGE_SHIFT;
+
+ high_memory = (void *)memory_end;
+ availmem = memory_start;
+
+ /* setup bootmem data */
+ m68k_setup_node(0);
+ availmem += init_bootmem_node(NODE_DATA(0), min_low_pfn,
+ base_pfn, max_low_pfn);
+ availmem = PAGE_ALIGN(availmem);
+ free_bootmem(__pa(availmem), memory_end - (availmem));
+}
+
+void __init config_coldfire(void)
+{
+ unsigned long endmem, startmem;
+ int i;
+
+ /*
+ * Calculate endmem from m68k_memory, assume all are contiguous
+ */
+ startmem = ((((int) &_end) + (PAGE_SIZE - 1)) & PAGE_MASK);
+ endmem = PAGE_OFFSET;
+ for (i = 0; i < m68k_num_memory; ++i)
+ endmem += m68k_memory[i].size;
+
+ printk(KERN_INFO "starting up linux startmem 0x%lx, endmem 0x%lx, \
+ size %luMB\n", startmem, endmem, (endmem - startmem) >> 20);
+
+ memset(irq_enable, 0, sizeof(irq_enable));
+
+ /*
+ * Setup coldfire mach-specific handlers
+ */
+ mach_max_dma_address = 0xffffffff;
+ mach_sched_init = coldfire_sched_init;
+ mach_tick = coldfire_tick;
+ mach_gettimeoffset = coldfire_gettimeoffset;
+ mach_reset = coldfire_reboot;
+/* mach_hwclk = coldfire_hwclk; to be done */
+ mach_get_model = coldfire_get_model;
+
+ coldfire_bootmem_alloc(startmem, endmem);
+
+ /*
+ * initrd setup
+ */
+/* #ifdef CONFIG_BLK_DEV_INITRD
+ if (m68k_ramdisk.size) {
+ reserve_bootmem (__pa(m68k_ramdisk.addr), m68k_ramdisk.size);
+ initrd_start = (unsigned long) m68k_ramdisk.addr;
+ initrd_end = initrd_start + m68k_ramdisk.size;
+ printk (KERN_DEBUG "initrd: %08lx - %08lx\n", initrd_start,
+ initrd_end);
+ }
+#endif */
+
+#if defined(CONFIG_DUMMY_CONSOLE) || defined(CONFIG_FRAMEBUFFER_CONSOLE)
+ conswitchp = &dummy_con;
+#endif
+
+#if defined(CONFIG_SERIAL_COLDFIRE)
+ /*
+ * This causes trouble when it is re-registered later.
+ * Currently this is fixed by conditionally commenting
+ * out the register_console in mcf_serial.c
+ */
+ register_console(&mcfrs_console);
+#endif
+}
--- /dev/null
+++ b/arch/m68k/coldfire/entry.S
@@ -0,0 +1,701 @@
+/*
+ * arch/m68k/coldfire/entry.S
+ *
+ * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
+ * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
+ * Kenneth Albanowski <kjahds@kjahds.com>,
+ * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
+ * Copyright (C) 2004-2006 Macq Electronique SA. (www.macqel.com)
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Kurt Mahan kmahan@freescale.com
+ * Copyright Freescale Semiconductor, Inc. 2007
+ *
+ * Based on:
+ *
+ * arch/m68knommu/platform/5307/entry.S &
+ * arch/m68k/kernel/entry.S
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file README.legal in the main directory of this archive
+ * for more details.
+ *
+ * Linux/m68k support by Hamish Macdonald
+ *
+ * ColdFire support by Greg Ungerer (gerg@snapgear.com)
+ * 5307 fixes by David W. Miller
+ * linux 2.4 support David McCullough <davidm@snapgear.com>
+ * Bug, speed and maintainability fixes by Philippe De Muyter <phdm@macqel.be>
+ * Ported to mmu Coldfire by Matt Waddel
+ */
+
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/cf_entry.h>
+#include <asm/errno.h>
+#include <asm/setup.h>
+#include <asm/segment.h>
+#include <asm/traps.h>
+#include <asm/unistd.h>
+
+/*
+ * TASK_INFO:
+ *
+ * - TINFO_PREEMPT (struct thread_info / preempt_count)
+ * Used to keep track of preemptability
+ * - TINFO_FLAGS (struct thread_info / flags - include/asm-m68k/thread_info.h)
+ * Various bit flags that are checked for scheduling/tracing
+ * Bits 0-7 are checked every exception exit
+ * 8-15 are checked every syscall exit
+ *
+ * TIF_SIGPENDING 6
+ * TIF_NEED_RESCHED 7
+ * TIF_DELAYED_TRACE 14
+ * TIF_SYSCALL_TRACE 15
+ * TIF_MEMDIE 16 (never checked here)
+ */
+
+.bss
+
+sw_ksp:
+.long 0
+
+sw_usp:
+.long 0
+
+.text
+
+.globl system_call
+.globl buserr
+.globl trap
+.globl resume
+.globl ret_from_exception
+.globl ret_from_signal
+.globl sys_call_table
+.globl ret_from_interrupt
+.globl inthandler
+
+ENTRY(buserr)
+ SAVE_ALL_INT
+ GET_CURRENT(%d0)
+ movel %sp,%sp@- /* stack frame pointer argument */
+ jsr buserr_c
+ addql #4,%sp
+ jra .Lret_from_exception
+
+ENTRY(trap)
+ SAVE_ALL_INT
+ GET_CURRENT(%d0)
+ movel %sp,%sp@- /* stack frame pointer argument */
+ jsr trap_c
+ addql #4,%sp
+ jra .Lret_from_exception
+
+ /* After a fork we jump here directly from resume,
+ %d1 contains the previous task schedule_tail */
+ENTRY(ret_from_fork)
+ movel %d1,%sp@-
+ jsr schedule_tail
+ addql #4,%sp
+ jra .Lret_from_exception
+
+do_trace_entry:
+ movel #-ENOSYS,%d1 /* needed for strace */
+ movel %d1,%sp@(PT_D0)
+ subql #4,%sp
+ SAVE_SWITCH_STACK
+ jbsr syscall_trace
+ RESTORE_SWITCH_STACK
+ addql #4,%sp
+ movel %sp@(PT_ORIG_D0),%d0
+ cmpl #NR_syscalls,%d0
+ jcs syscall
+badsys:
+ movel #-ENOSYS,%d1
+ movel %d1,%sp@(PT_D0)
+ jra ret_from_exception
+
+do_trace_exit:
+ subql #4,%sp
+ SAVE_SWITCH_STACK
+ jbsr syscall_trace
+ RESTORE_SWITCH_STACK
+ addql #4,%sp
+ jra .Lret_from_exception
+
+ENTRY(ret_from_signal)
+ RESTORE_SWITCH_STACK
+ addql #4,%sp
+ jra .Lret_from_exception
+
+ENTRY(system_call)
+ SAVE_ALL_SYS
+
+ GET_CURRENT(%d1)
+ /* save top of frame */
+ movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
+
+ /* syscall trace */
+ tstb %curptr@(TASK_INFO+TINFO_FLAGS+2)
+ jmi do_trace_entry /* SYSCALL_TRACE is set */
+ cmpl #NR_syscalls,%d0
+ jcc badsys
+syscall:
+ movel #sys_call_table,%a0
+ asll #2,%d0
+ addl %d0,%a0
+ movel %a0@,%a0
+ jsr %a0@
+ movel %d0,%sp@(PT_D0) /* save the return value */
+ret_from_syscall:
+ movew %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0
+ jne syscall_exit_work /* flags set so process */
+1: RESTORE_ALL
+
+syscall_exit_work:
+ btst #5,%sp@(PT_SR) /* check if returning to kernel */
+ bnes 1b /* if so, skip resched, signals */
+
+ btstl #15,%d0 /* check if SYSCALL_TRACE */
+ jne do_trace_exit
+ btstl #14,%d0 /* check if DELAYED_TRACE */
+ jne do_delayed_trace
+ btstl #6,%d0 /* check if SIGPENDING */
+ jne do_signal_return
+ pea resume_userspace
+ jra schedule
+
+ENTRY(ret_from_exception)
+.Lret_from_exception:
+ btst #5,%sp@(PT_SR) /* check if returning to kernel */
+ bnes 1f /* if so, skip resched, signals */
+ movel %d0,%sp@- /* Only allow interrupts when we are */
+ move %sr,%d0 /* last one on the kernel stack, */
+ andl #ALLOWINT,%d0 /* otherwise stack overflow can occur */
+ move %d0,%sr /* during heavy interrupt load. */
+ movel %sp@+,%d0
+
+resume_userspace:
+ moveb %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0
+ jne exit_work /* SIGPENDING and/or NEED_RESCHED set */
+1: RESTORE_ALL
+
+exit_work:
+ /* save top of frame */
+ movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
+ btstl #6,%d0 /* check for SIGPENDING in flags */
+ jne do_signal_return
+ pea resume_userspace
+ jra schedule
+
+do_signal_return:
+ subql #4,%sp /* dummy return address */
+ SAVE_SWITCH_STACK
+ pea %sp@(SWITCH_STACK_SIZE)
+ clrl %sp@-
+ bsrl do_signal
+ addql #8,%sp
+ RESTORE_SWITCH_STACK
+ addql #4,%sp
+ jbra resume_userspace
+
+do_delayed_trace:
+ bclr #7,%sp@(PT_SR) /* clear trace bit in SR */
+ pea 1 /* send SIGTRAP */
+ movel %curptr,%sp@-
+ pea LSIGTRAP
+ jbsr send_sig
+ addql #8,%sp
+ addql #4,%sp
+ jbra resume_userspace
+
+/*
+ * This is the interrupt handler (for all hardware interrupt
+ * sources). It figures out the vector number and calls the appropriate
+ * interrupt service routine directly.
+ */
+ENTRY(inthandler)
+ SAVE_ALL_INT
+ GET_CURRENT(%d0)
+ addql #1,%curptr@(TASK_INFO+TINFO_PREEMPT)
+ /* put exception # in d0 */
+ movel %sp@(PT_VECTOR),%d0
+ swap %d0 /* extract bits 25:18 */
+ lsrl #2,%d0
+ andl #0x0ff,%d0
+
+ movel %sp,%sp@-
+ movel %d0,%sp@- /* put vector # on stack */
+auto_irqhandler_fixup = . + 2
+ jbsr process_int /* process the IRQ */
+ addql #8,%sp /* pop parameters off stack */
+
+ENTRY(ret_from_interrupt)
+ret_from_interrupt:
+
+ subql #1,%curptr@(TASK_INFO+TINFO_PREEMPT)
+ jeq ret_from_last_interrupt
+2: RESTORE_ALL
+
+ ALIGN
+ret_from_last_interrupt:
+ moveb %sp@(PT_SR),%d0
+ andl #(~ALLOWINT>>8)&0xff,%d0
+ jne 2b
+
+ /* check if we need to do software interrupts */
+ tstl irq_stat+CPUSTAT_SOFTIRQ_PENDING
+ jeq .Lret_from_exception
+ pea ret_from_exception
+ jra do_softirq
+
+ENTRY(user_inthandler)
+ SAVE_ALL_INT
+ GET_CURRENT(%d0)
+ addql #1,%curptr@(TASK_INFO+TINFO_PREEMPT)
+ /* put exception # in d0 */
+ movel %sp@(PT_VECTOR),%d0
+user_irqvec_fixup = . + 2
+ swap %d0 /* extract bits 25:18 */
+ lsrl #2,%d0
+ andl #0x0ff,%d0
+
+ movel %sp,%sp@-
+ movel %d0,%sp@- /* put vector # on stack */
+user_irqhandler_fixup = . + 2
+ jbsr process_int /* process the IRQ */
+ addql #8,%sp /* pop parameters off stack */
+
+ subql #1,%curptr@(TASK_INFO+TINFO_PREEMPT)
+ jeq ret_from_last_interrupt
+ RESTORE_ALL
+
+/* Handler for uninitialized and spurious interrupts */
+
+ENTRY(bad_inthandler)
+ SAVE_ALL_INT
+ GET_CURRENT(%d0)
+ addql #1,%curptr@(TASK_INFO+TINFO_PREEMPT)
+
+ movel %sp,%sp@-
+ jsr handle_badint
+ addql #4,%sp
+
+ subql #1,%curptr@(TASK_INFO+TINFO_PREEMPT)
+ jeq ret_from_last_interrupt
+ RESTORE_ALL
+
+ENTRY(sys_fork)
+ SAVE_SWITCH_STACK
+ pea %sp@(SWITCH_STACK_SIZE)
+ jbsr m68k_fork
+ addql #4,%sp
+ RESTORE_SWITCH_STACK
+ rts
+
+ENTRY(sys_clone)
+ SAVE_SWITCH_STACK
+ pea %sp@(SWITCH_STACK_SIZE)
+ jbsr m68k_clone
+ addql #4,%sp
+ RESTORE_SWITCH_STACK
+ rts
+
+ENTRY(sys_vfork)
+ SAVE_SWITCH_STACK
+ pea %sp@(SWITCH_STACK_SIZE)
+ jbsr m68k_vfork
+ addql #4,%sp
+ RESTORE_SWITCH_STACK
+ rts
+
+ENTRY(sys_sigsuspend)
+ SAVE_SWITCH_STACK
+ pea %sp@(SWITCH_STACK_SIZE)
+ jbsr do_sigsuspend
+ addql #4,%sp
+ RESTORE_SWITCH_STACK
+ rts
+
+ENTRY(sys_rt_sigsuspend)
+ SAVE_SWITCH_STACK
+ pea %sp@(SWITCH_STACK_SIZE)
+ jbsr do_rt_sigsuspend
+ addql #4,%sp
+ RESTORE_SWITCH_STACK
+ rts
+
+ENTRY(sys_sigreturn)
+ SAVE_SWITCH_STACK
+ jbsr do_sigreturn
+ RESTORE_SWITCH_STACK
+ rts
+
+ENTRY(sys_rt_sigreturn)
+ SAVE_SWITCH_STACK
+ jbsr do_rt_sigreturn
+ RESTORE_SWITCH_STACK
+ rts
+
+resume:
+ /*
+ * Beware - when entering resume, prev (the current task) is
+ * in a0, next (the new task) is in a1,so don't change these
+ * registers until their contents are no longer needed.
+ */
+
+ /* save sr */
+ movew %sr,%d0
+ movew %d0,%a0@(TASK_THREAD+THREAD_SR)
+
+ /* save usp */
+ /* Save USP via %a1 (which is saved/restored from %d0) */
+ movel %a1,%d0
+ movel %usp,%a1
+ movel %a1,%a0@(TASK_THREAD+THREAD_USP)
+ movel %d0,%a1
+
+ /* save non-scratch registers on stack */
+ SAVE_SWITCH_STACK
+
+ /* save current kernel stack pointer */
+ movel %sp,%a0@(TASK_THREAD+THREAD_KSP)
+
+ /* Return previous task in %d1 */
+ movel %curptr,%d1
+
+ /* switch to new task (a1 contains new task) */
+ movel %a1,%curptr
+
+ /* restore the kernel stack pointer */
+ movel %a1@(TASK_THREAD+THREAD_KSP),%sp
+
+ /* restore non-scratch registers */
+ RESTORE_SWITCH_STACK
+
+ /* restore user stack pointer */
+ movel %a1@(TASK_THREAD+THREAD_USP),%a0
+ movel %a0,%usp
+
+ /* restore status register */
+ movew %a1@(TASK_THREAD+THREAD_SR),%d0
+ movew %d0,%sr
+
+ rts
+
+.data
+ALIGN
+sys_call_table:
+ .long sys_ni_syscall /* 0 - old "setup()" system call*/
+ .long sys_exit
+ .long sys_fork
+ .long sys_read
+ .long sys_write
+ .long sys_open /* 5 */
+ .long sys_close
+ .long sys_waitpid
+ .long sys_creat
+ .long sys_link
+ .long sys_unlink /* 10 */
+ .long sys_execve
+ .long sys_chdir
+ .long sys_time
+ .long sys_mknod
+ .long sys_chmod /* 15 */
+ .long sys_chown16
+ .long sys_ni_syscall /* old break syscall holder */
+ .long sys_stat
+ .long sys_lseek
+ .long sys_getpid /* 20 */
+ .long sys_mount
+ .long sys_oldumount
+ .long sys_setuid16
+ .long sys_getuid16
+ .long sys_stime /* 25 */
+ .long sys_ptrace
+ .long sys_alarm
+ .long sys_fstat
+ .long sys_pause
+ .long sys_utime /* 30 */
+ .long sys_ni_syscall /* old stty syscall holder */
+ .long sys_ni_syscall /* old gtty syscall holder */
+ .long sys_access
+ .long sys_nice
+ .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */
+ .long sys_sync
+ .long sys_kill
+ .long sys_rename
+ .long sys_mkdir
+ .long sys_rmdir /* 40 */
+ .long sys_dup
+ .long sys_pipe
+ .long sys_times
+ .long sys_ni_syscall /* old prof syscall holder */
+ .long sys_brk /* 45 */
+ .long sys_setgid16
+ .long sys_getgid16
+ .long sys_signal
+ .long sys_geteuid16
+ .long sys_getegid16 /* 50 */
+ .long sys_acct
+ .long sys_umount /* recycled never used phys() */
+ .long sys_ni_syscall /* old lock syscall holder */
+ .long sys_ioctl
+ .long sys_fcntl /* 55 */
+ .long sys_ni_syscall /* old mpx syscall holder */
+ .long sys_setpgid
+ .long sys_ni_syscall /* old ulimit syscall holder */
+ .long sys_ni_syscall
+ .long sys_umask /* 60 */
+ .long sys_chroot
+ .long sys_ustat
+ .long sys_dup2
+ .long sys_getppid
+ .long sys_getpgrp /* 65 */
+ .long sys_setsid
+ .long sys_sigaction
+ .long sys_sgetmask
+ .long sys_ssetmask
+ .long sys_setreuid16 /* 70 */
+ .long sys_setregid16
+ .long sys_sigsuspend
+ .long sys_sigpending
+ .long sys_sethostname
+ .long sys_setrlimit /* 75 */
+ .long sys_old_getrlimit
+ .long sys_getrusage
+ .long sys_gettimeofday
+ .long sys_settimeofday
+ .long sys_getgroups16 /* 80 */
+ .long sys_setgroups16
+ .long old_select
+ .long sys_symlink
+ .long sys_lstat
+ .long sys_readlink /* 85 */
+ .long sys_uselib
+ .long sys_swapon
+ .long sys_reboot
+ .long old_readdir
+ .long old_mmap /* 90 */
+ .long sys_munmap
+ .long sys_truncate
+ .long sys_ftruncate
+ .long sys_fchmod
+ .long sys_fchown16 /* 95 */
+ .long sys_getpriority
+ .long sys_setpriority
+ .long sys_ni_syscall /* old profil syscall holder */
+ .long sys_statfs
+ .long sys_fstatfs /* 100 */
+ .long sys_ni_syscall /* ioperm for i386 */
+ .long sys_socketcall
+ .long sys_syslog
+ .long sys_setitimer
+ .long sys_getitimer /* 105 */
+ .long sys_newstat
+ .long sys_newlstat
+ .long sys_newfstat
+ .long sys_ni_syscall
+ .long sys_ni_syscall /* 110 */ /* iopl for i386 */
+ .long sys_vhangup
+ .long sys_ni_syscall /* obsolete idle() syscall */
+ .long sys_ni_syscall /* vm86old for i386 */
+ .long sys_wait4
+ .long sys_swapoff /* 115 */
+ .long sys_sysinfo
+ .long sys_ipc
+ .long sys_fsync
+ .long sys_sigreturn
+ .long sys_clone /* 120 */
+ .long sys_setdomainname
+ .long sys_newuname
+ .long sys_cacheflush /* modify_ldt for i386 */
+ .long sys_adjtimex
+ .long sys_mprotect /* 125 */
+ .long sys_sigprocmask
+ .long sys_ni_syscall /* old "create_module" */
+ .long sys_init_module
+ .long sys_delete_module
+ .long sys_ni_syscall /* 130 - old "get_kernel_syms" */
+ .long sys_quotactl
+ .long sys_getpgid
+ .long sys_fchdir
+ .long sys_bdflush
+ .long sys_sysfs /* 135 */
+ .long sys_personality
+ .long sys_ni_syscall /* for afs_syscall */
+ .long sys_setfsuid16
+ .long sys_setfsgid16
+ .long sys_llseek /* 140 */
+ .long sys_getdents
+ .long sys_select
+ .long sys_flock
+ .long sys_msync
+ .long sys_readv /* 145 */
+ .long sys_writev
+ .long sys_getsid
+ .long sys_fdatasync
+ .long sys_sysctl
+ .long sys_mlock /* 150 */
+ .long sys_munlock
+ .long sys_mlockall
+ .long sys_munlockall
+ .long sys_sched_setparam
+ .long sys_sched_getparam /* 155 */
+ .long sys_sched_setscheduler
+ .long sys_sched_getscheduler
+ .long sys_sched_yield
+ .long sys_sched_get_priority_max
+ .long sys_sched_get_priority_min /* 160 */
+ .long sys_sched_rr_get_interval
+ .long sys_nanosleep
+ .long sys_mremap
+ .long sys_setresuid16
+ .long sys_getresuid16 /* 165 */
+ .long sys_getpagesize
+ .long sys_ni_syscall /* old sys_query_module */
+ .long sys_poll
+ .long sys_nfsservctl
+ .long sys_setresgid16 /* 170 */
+ .long sys_getresgid16
+ .long sys_prctl
+ .long sys_rt_sigreturn
+ .long sys_rt_sigaction
+ .long sys_rt_sigprocmask /* 175 */
+ .long sys_rt_sigpending
+ .long sys_rt_sigtimedwait
+ .long sys_rt_sigqueueinfo
+ .long sys_rt_sigsuspend
+ .long sys_pread64 /* 180 */
+ .long sys_pwrite64
+ .long sys_lchown16;
+ .long sys_getcwd
+ .long sys_capget
+ .long sys_capset /* 185 */
+ .long sys_sigaltstack
+ .long sys_sendfile
+ .long sys_ni_syscall /* streams1 */
+ .long sys_ni_syscall /* streams2 */
+ .long sys_vfork /* 190 */
+ .long sys_getrlimit
+ .long sys_mmap2
+ .long sys_truncate64
+ .long sys_ftruncate64
+ .long sys_stat64 /* 195 */
+ .long sys_lstat64
+ .long sys_fstat64
+ .long sys_chown
+ .long sys_getuid
+ .long sys_getgid /* 200 */
+ .long sys_geteuid
+ .long sys_getegid
+ .long sys_setreuid
+ .long sys_setregid
+ .long sys_getgroups /* 205 */
+ .long sys_setgroups
+ .long sys_fchown
+ .long sys_setresuid
+ .long sys_getresuid
+ .long sys_setresgid /* 210 */
+ .long sys_getresgid
+ .long sys_lchown
+ .long sys_setuid
+ .long sys_setgid
+ .long sys_setfsuid /* 215 */
+ .long sys_setfsgid
+ .long sys_pivot_root
+ .long sys_ni_syscall
+ .long sys_ni_syscall
+ .long sys_getdents64 /* 220 */
+ .long sys_gettid
+ .long sys_tkill
+ .long sys_setxattr
+ .long sys_lsetxattr
+ .long sys_fsetxattr /* 225 */
+ .long sys_getxattr
+ .long sys_lgetxattr
+ .long sys_fgetxattr
+ .long sys_listxattr
+ .long sys_llistxattr /* 230 */
+ .long sys_flistxattr
+ .long sys_removexattr
+ .long sys_lremovexattr
+ .long sys_fremovexattr
+ .long sys_futex /* 235 */
+ .long sys_sendfile64
+ .long sys_mincore
+ .long sys_madvise
+ .long sys_fcntl64
+ .long sys_readahead /* 240 */
+ .long sys_io_setup
+ .long sys_io_destroy
+ .long sys_io_getevents
+ .long sys_io_submit
+ .long sys_io_cancel /* 245 */
+ .long sys_fadvise64
+ .long sys_exit_group
+ .long sys_lookup_dcookie
+ .long sys_epoll_create
+ .long sys_epoll_ctl /* 250 */
+ .long sys_epoll_wait
+ .long sys_remap_file_pages
+ .long sys_set_tid_address
+ .long sys_timer_create
+ .long sys_timer_settime /* 255 */
+ .long sys_timer_gettime
+ .long sys_timer_getoverrun
+ .long sys_timer_delete
+ .long sys_clock_settime
+ .long sys_clock_gettime /* 260 */
+ .long sys_clock_getres
+ .long sys_clock_nanosleep
+ .long sys_statfs64
+ .long sys_fstatfs64
+ .long sys_tgkill /* 265 */
+ .long sys_utimes
+ .long sys_fadvise64_64
+ .long sys_mbind
+ .long sys_get_mempolicy
+ .long sys_set_mempolicy /* 270 */
+ .long sys_mq_open
+ .long sys_mq_unlink
+ .long sys_mq_timedsend
+ .long sys_mq_timedreceive
+ .long sys_mq_notify /* 275 */
+ .long sys_mq_getsetattr
+ .long sys_waitid
+ .long sys_ni_syscall /* for sys_vserver */
+ .long sys_add_key
+ .long sys_request_key /* 280 */
+ .long sys_keyctl
+ .long sys_ioprio_set
+ .long sys_ioprio_get
+ .long sys_inotify_init
+ .long sys_inotify_add_watch /* 285 */
+ .long sys_inotify_rm_watch
+ .long sys_migrate_pages
+ .long sys_openat
+ .long sys_mkdirat
+ .long sys_mknodat /* 290 */
+ .long sys_fchownat
+ .long sys_futimesat
+ .long sys_fstatat64
+ .long sys_unlinkat
+ .long sys_renameat /* 295 */
+ .long sys_linkat
+ .long sys_symlinkat
+ .long sys_readlinkat
+ .long sys_fchmodat
+ .long sys_faccessat /* 300 */
+ .long sys_ni_syscall /* Reserved for pselect6 */
+ .long sys_ni_syscall /* Reserved for ppoll */
+ .long sys_unshare
+ .long sys_set_robust_list
+ .long sys_get_robust_list /* 305 */
+ .long sys_splice
+ .long sys_sync_file_range
+ .long sys_tee
+ .long sys_vmsplice
+ .long sys_move_pages /* 310 */
+
--- /dev/null
+++ b/arch/m68k/coldfire/head.S
@@ -0,0 +1,474 @@
+/*
+ * head.S is the MMU enabled ColdFire specific initial boot code
+ *
+ * Ported to ColdFire by
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Kurt Mahan kmahan@freescale.com
+ * Copyright Freescale Semiconductor, Inc. 2007
+ *
+ * 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.
+ *
+ * Parts of this code came from arch/m68k/kernel/head.S
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+#include <asm/setup.h>
+#include <asm/entry.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/coldfire.h>
+#include <asm/mcfuart.h>
+#include <asm/cfcache.h>
+
+#define DEBUG
+
+.globl kernel_pg_dir
+.globl availmem
+.globl set_context
+.globl set_fpga
+
+#ifdef DEBUG
+/* When debugging use readable names for labels */
+#ifdef __STDC__
+#define L(name) .head.S.##name
+#else
+#define L(name) .head.S./**/name
+#endif
+#else
+#ifdef __STDC__
+#define L(name) .L##name
+#else
+#define L(name) .L/**/name
+#endif
+#endif
+
+/* The __INITDATA stuff is a no-op when ftrace or kgdb are turned on */
+#ifndef __INITDATA
+#define __INITDATA .data
+#define __FINIT .previous
+#endif
+
+/*
+ * Setup ACR mappings to provide the following memory map:
+ * Data
+ * 0xA0000000 -> 0xAFFFFFFF [0] NO CACHE / PRECISE / SUPER ONLY
+ * 0xFC000000 -> 0xFCFFFFFF [1] NO CACHE / PRECISE / SUPER ONLY
+ * Code
+ * None currently (mapped via TLBs)
+ */
+
+#define ACR0_DEFAULT #0xA00FA048 /* ACR0 default value */
+#define ACR1_DEFAULT #0xFC00A040 /* ACR1 default value */
+#define ACR2_DEFAULT #0x00000000 /* ACR2 default value */
+#define ACR3_DEFAULT #0x00000000 /* ACR3 default value */
+
+/* ACR mapping for FPGA (maps 0) */
+#define ACR0_FPGA #0x000FA048 /* ACR0 enable FPGA */
+
+/* Several macros to make the writing of subroutines easier:
+ * - func_start marks the beginning of the routine which setups the frame
+ * register and saves the registers, it also defines another macro
+ * to automatically restore the registers again.
+ * - func_return marks the end of the routine and simply calls the prepared
+ * macro to restore registers and jump back to the caller.
+ * - func_define generates another macro to automatically put arguments
+ * onto the stack call the subroutine and cleanup the stack again.
+ */
+
+.macro load_symbol_address symbol,register
+ movel #\symbol,\register
+.endm
+
+.macro func_start name,saveregs,savesize,stack=0
+L(\name):
+ linkw %a6,#-\stack
+ subal #(\savesize),%sp
+ moveml \saveregs,%sp@
+.set stackstart,-\stack
+
+.macro func_return_\name
+ moveml %sp@,\saveregs
+ addal #(\savesize),%sp
+ unlk %a6
+ rts
+.endm
+.endm
+
+.macro func_return name
+ func_return_\name
+.endm
+
+.macro func_call name
+ jbsr L(\name)
+.endm
+
+.macro move_stack nr,arg1,arg2,arg3,arg4
+.if \nr
+ move_stack "(\nr-1)",\arg2,\arg3,\arg4
+ movel \arg1,%sp@-
+.endif
+.endm
+
+.macro func_define name,nr=0
+.macro \name arg1,arg2,arg3,arg4
+ move_stack \nr,\arg1,\arg2,\arg3,\arg4
+ func_call \name
+.if \nr
+ lea %sp@(\nr*4),%sp
+.endif
+.endm
+.endm
+
+func_define serial_putc,1
+
+.macro putc ch
+ pea \ch
+ func_call serial_putc
+ addql #4,%sp
+.endm
+
+.macro dputc ch
+#ifdef DEBUG
+ putc \ch
+#endif
+.endm
+
+func_define putn,1
+
+.macro dputn nr
+#ifdef DEBUG
+ putn \nr
+#endif
+.endm
+
+/*
+ mmu_map - creates a new TLB entry
+
+ virt_addr Must be on proper boundary
+ phys_addr Must be on proper boundary
+ itlb MMUOR_ITLB if instruction TLB or 0
+ asid address space ID
+ shared_global MMUTR_SG if shared between different ASIDs or 0
+ size_code MMUDR_SZ1M 1 MB
+ MMUDR_SZ4K 4 KB
+ MMUDR_SZ8K 8 KB
+ MMUDR_SZ16M 16 MB
+ cache_mode MMUDR_INC instruction non-cacheable
+ MMUDR_IC instruction cacheable
+ MMUDR_DWT data writethrough
+ MMUDR_DCB data copyback
+ MMUDR_DNCP data non-cacheable, precise
+ MMUDR_DNCIP data non-cacheable, imprecise
+ super_prot MMUDR_SP if user mode generates exception or 0
+ readable MMUDR_R if permits read access (data TLB) or 0
+ writable MMUDR_W if permits write access (data TLB) or 0
+ executable MMUDR_X if permits execute access (instruction TLB) or 0
+ locked MMUDR_LK prevents TLB entry from being replaced or 0
+ temp_data_reg a data register to use for temporary values
+*/
+.macro mmu_map virt_addr,phys_addr,itlb,asid,shared_global,size_code,cache_mode,super_prot,readable,writable,executable,locked,temp_data_reg
+ /* Set up search of TLB. */
+ movel #(\virt_addr+1), \temp_data_reg
+ movel \temp_data_reg, MMUAR
+ /* Search. */
+ movel #(MMUOR_STLB + MMUOR_ADR +\itlb), \temp_data_reg
+ movew \temp_data_reg, (MMUOR)
+ /* Set up tag value. */
+ movel #(\virt_addr + \asid + \shared_global + MMUTR_V), \temp_data_reg
+ movel \temp_data_reg, MMUTR
+ /* Set up data value. */
+ movel #(\phys_addr + \size_code + \cache_mode + \super_prot + \readable + \writable + \executable + \locked), \temp_data_reg
+ movel \temp_data_reg, MMUDR
+ /* Save it. */
+ movel #(MMUOR_ACC + MMUOR_UAA + \itlb), \temp_data_reg
+ movew \temp_data_reg, (MMUOR)
+.endm /* mmu_map */
+
+.macro mmu_unmap virt_addr,itlb,temp_data_reg
+ /* Set up search of TLB. */
+ movel #(\virt_addr+1), \temp_data_reg
+ movel \temp_data_reg, MMUAR
+ /* Search. */
+ movel #(MMUOR_STLB + MMUOR_ADR +\itlb), \temp_data_reg
+ movew \temp_data_reg, (MMUOR)
+ /* Test for hit. */
+ movel MMUSR,\temp_data_reg
+ btst #MMUSR_HITN,\temp_data_reg
+ beq 1f
+ /* Read the TLB. */
+ movel #(MMUOR_RW + MMUOR_ACC +\itlb), \temp_data_reg
+ movew \temp_data_reg, (MMUOR)
+ movel MMUSR,\temp_data_reg
+ /* Set up tag value. */
+ movel #0, \temp_data_reg
+ movel \temp_data_reg, MMUTR
+ /* Set up data value. */
+ movel #0, \temp_data_reg
+ movel \temp_data_reg, MMUDR
+ /* Save it. */
+ movel #(MMUOR_ACC + MMUOR_UAA + \itlb), \temp_data_reg
+ movew \temp_data_reg, (MMUOR)
+1:
+.endm /* mmu_unmap */
+
+/* .text */
+.section ".text.head","ax"
+ENTRY(_stext)
+/* Version numbers of the bootinfo interface -- if we later pass info
+ * from boot ROM we might want to put something real here.
+ *
+ * The area from _stext to _start will later be used as kernel pointer table
+ */
+ bras 1f /* Jump over bootinfo version numbers */
+
+ .long BOOTINFOV_MAGIC
+ .long 0
+1: jmp __start-0x80000000
+
+.equ kernel_pg_dir,_stext
+.equ .,_stext+0x1000
+
+ENTRY(_start)
+ jra __start
+__INIT
+ENTRY(__start)
+
+/* Save the location of u-boot info - cmd line, bd_info, etc. */
+ movel %a7,%a4 /* Don't use %a4 before cf_early_init */
+ addl #0x80000004,%a4 /* 0x80000004= 1 stack push + high mem offset */
+
+/* Setup initial stack pointer */
+ movel #0x40001000,%sp
+
+/* Clear usp */
+ subl %a0,%a0
+ movel %a0,%usp
+
+ movel #(MCF_RAMBAR1 + 0x221), %d0
+ movec %d0, %rambar1
+ movew #0x2700,%sr
+
+ movel #(MMU_BASE+1),%d0
+ movecl %d0,%mmubar
+ movel #MMUOR_CA,%a0 /* Clear tlb entries */
+ movew %a0,(MMUOR)
+ movel #(MMUOR_CA + MMUOR_ITLB),%a0 /* Use ITLB for searches */
+ movew %a0,(MMUOR)
+ movel #0,%a0 /* Clear Addr Space User ID */
+ movecl %a0,%asid
+
+/* setup ACRs */
+ movel ACR0_DEFAULT, %d0 /* ACR0 (DATA) setup */
+ movec %d0, %acr0
+ movel ACR1_DEFAULT, %d0 /* ACR1 (DATA) setup */
+ movec %d0, %acr1
+ movel ACR2_DEFAULT, %d0 /* ACR2 (CODE) setup */
+ movec %d0, %acr2
+ movel ACR3_DEFAULT, %d0 /* ACR3 (CODE) setup */
+ movec %d0, %acr3
+
+ /* If you change the memory size to another value make a matching
+ change in paging_init(cf-mmu.c) to zones_size[]. */
+
+ /* Map 256MB as code */
+ mmu_map (PAGE_OFFSET+0*0x1000000), (PHYS_OFFSET+0*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+1*0x1000000), (PHYS_OFFSET+1*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+2*0x1000000), (PHYS_OFFSET+2*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+3*0x1000000), (PHYS_OFFSET+3*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+4*0x1000000), (PHYS_OFFSET+4*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+5*0x1000000), (PHYS_OFFSET+5*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+6*0x1000000), (PHYS_OFFSET+6*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+7*0x1000000), (PHYS_OFFSET+7*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+8*0x1000000), (PHYS_OFFSET+8*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+9*0x1000000), (PHYS_OFFSET+9*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+10*0x1000000), (PHYS_OFFSET+10*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+11*0x1000000), (PHYS_OFFSET+11*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+12*0x1000000), (PHYS_OFFSET+12*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+13*0x1000000), (PHYS_OFFSET+13*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+14*0x1000000), (PHYS_OFFSET+14*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+15*0x1000000), (PHYS_OFFSET+15*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_IC, MMUDR_SP, \
+ 0, 0, MMUDR_X, MMUDR_LK, %d0
+
+ /* Map 256MB as data also */
+ mmu_map (PAGE_OFFSET+0*0x1000000), (PHYS_OFFSET+0*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+1*0x1000000), (PHYS_OFFSET+1*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+2*0x1000000), (PHYS_OFFSET+2*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+3*0x1000000), (PHYS_OFFSET+3*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+4*0x1000000), (PHYS_OFFSET+4*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+5*0x1000000), (PHYS_OFFSET+5*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+6*0x1000000), (PHYS_OFFSET+6*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+7*0x1000000), (PHYS_OFFSET+7*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+8*0x1000000), (PHYS_OFFSET+8*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+9*0x1000000), (PHYS_OFFSET+9*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+10*0x1000000), (PHYS_OFFSET+10*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+11*0x1000000), (PHYS_OFFSET+11*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+12*0x1000000), (PHYS_OFFSET+12*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+13*0x1000000), (PHYS_OFFSET+13*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+14*0x1000000), (PHYS_OFFSET+14*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+ mmu_map (PAGE_OFFSET+15*0x1000000), (PHYS_OFFSET+15*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, MMUDR_LK, %d0
+
+ /* Do unity mapping to enable the MMU. Map first 16 MB in place as
+ code (delete TLBs after MMU is enabled and we are executing in high
+ memory). */
+ mmu_map (PHYS_OFFSET+0*0x1000000), (PHYS_OFFSET+0*0x1000000), \
+ MMUOR_ITLB, 0, MMUTR_SG, MMUDR_SZ16M, MMUDR_INC, MMUDR_SP, 0, \
+ 0, MMUDR_X, 0, %d0
+ /* Map first 16 MB as data too. */
+ mmu_map (PHYS_OFFSET+0*0x1000000), (PHYS_OFFSET+0*0x1000000), 0, 0, \
+ MMUTR_SG, MMUDR_SZ16M, MMUDR_DNCP, MMUDR_SP, MMUDR_R, MMUDR_W, \
+ 0, 0, %d0
+
+ /* Turn on MMU */
+ movel #(MMUCR_EN),%a0
+ movel %a0,MMUCR
+ nop /* This synchs the pipeline after a write to MMUCR */
+
+ movel #__running_high,%a0 /* Get around PC-relative addressing. */
+ jmp %a0@
+
+ENTRY(__running_high)
+ load_symbol_address _stext,%sp
+ movel L(memory_start),%a0
+ movel %a0,availmem
+ load_symbol_address L(phys_kernel_start),%a0
+ load_symbol_address _stext,%a1
+ subl #_stext,%a1
+ addl #PAGE_OFFSET,%a1
+ movel %a1,%a0@
+
+ /* Unmap first 16 MB, code and data. */
+ mmu_unmap (PHYS_OFFSET+0*0x1000000), MMUOR_ITLB, %d0
+ mmu_unmap (PHYS_OFFSET+0*0x1000000), 0, %d0
+
+/* Setup initial stack pointer */
+ lea init_task,%a2
+ lea init_thread_union+THREAD_SIZE,%sp
+ subl %a6,%a6 /* clear a6 for gdb */
+
+#ifdef CONFIG_MCF_USER_HALT
+/* Setup debug control reg to allow halts from user space */
+ lea wdbg_uhe,%a0
+ wdebug (%a0)
+#endif
+
+ movel %a4,uboot_info_stk /* save uboot info to variable */
+ jsr cf_early_init
+ jmp start_kernel
+
+.section ".text.head","ax"
+set_context:
+func_start set_context,%d0,(1*4)
+ movel 12(%sp),%d0
+ movec %d0,%asid
+func_return set_context
+
+/*
+ * set_fpga(addr,val)
+ *
+ * Map in 0x00000000 -> 0x0fffffff and then do the write.
+ */
+set_fpga:
+ movew %sr,%d1
+ movew #0x2700,%sr
+ movel ACR0_FPGA, %d0
+ movec %d0, %acr0
+ nop
+ moveal 4(%sp),%a0
+ movel 8(%sp),%a0@
+ movel ACR0_DEFAULT, %d0
+ movec %d0, %acr0
+ nop
+ movew %d1,%sr
+ rts
+
+ .data
+ .align 4
+
+availmem:
+ .long 0
+L(phys_kernel_start):
+ .long PAGE_OFFSET
+L(kernel_end):
+ .long 0
+L(memory_start):
+ .long PAGE_OFFSET_RAW
+
+#ifdef CONFIG_MCF_USER_HALT
+/*
+ * Enable User Halt Enable in the debug control register.
+ */
+wdbg_uhe:
+ .word 0x2c80 /* DR0 */
+ .word 0x00b0 /* 31:16 */
+ .word 0x0400 /* 15:0 -- enable UHE */
+ .word 0x0000 /* unused */
+#endif
+
+
--- /dev/null
+++ b/arch/m68k/coldfire/ints.c
@@ -0,0 +1,384 @@
+/*
+ * linux/arch/m68k/coldfire/ints.c -- General interrupt handling code
+ *
+ * Copyright (C) 1999-2002 Greg Ungerer (gerg@snapgear.com)
+ * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
+ * Kenneth Albanowski <kjahds@kjahds.com>,
+ * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Copyright Freescale Semiconductor, Inc. 2007
+ * Kurt Mahan kmahan@freescale.com
+ *
+ * Based on:
+ * linux/arch/m68k/kernel/ints.c &
+ * linux/arch/m68knommu/5307/ints.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/errno.h>
+#include <linux/seq_file.h>
+#include <linux/interrupt.h>
+
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+#include <asm/irq_regs.h>
+
+#include <asm/mcfsim.h>
+
+/*
+ * IRQ Handler lists.
+ */
+static struct irq_node *irq_list[SYS_IRQS];
+static struct irq_controller *irq_controller[SYS_IRQS];
+static int irq_depth[SYS_IRQS];
+
+/*
+ * IRQ Controller
+ */
+#ifdef CONFIG_M54455
+void m5445x_irq_enable(unsigned int irq);
+void m5445x_irq_disable(unsigned int irq);
+static struct irq_controller m5445x_irq_controller = {
+ .name = "M5445X",
+ .lock = SPIN_LOCK_UNLOCKED,
+ .enable = m5445x_irq_enable,
+ .disable = m5445x_irq_disable,
+};
+#endif
+
+#define POOL_SIZE SYS_IRQS
+static struct irq_node pool[POOL_SIZE];
+static struct irq_node *get_irq_node(void);
+
+/* The number of spurious interrupts */
+unsigned int num_spurious;
+asmlinkage void handle_badint(struct pt_regs *regs);
+
+/*
+ * void init_IRQ(void)
+ *
+ * This function should be called during kernel startup to initialize
+ * the IRQ handling routines.
+ */
+void __init init_IRQ(void)
+{
+ int i;
+
+#ifdef CONFIG_M54455
+ for (i = 0; i < SYS_IRQS; i++)
+ irq_controller[i] = &m5445x_irq_controller;
+#endif
+}
+
+/*
+ * process_int(unsigned long vec, struct pt_regs *fp)
+ *
+ * Process an interrupt. Called from entry.S.
+ */
+asmlinkage void process_int(unsigned long vec, struct pt_regs *fp)
+{
+ struct pt_regs *old_regs;
+ struct irq_node *node;
+ old_regs = set_irq_regs(fp);
+ kstat_cpu(0).irqs[vec]++;
+
+ node = irq_list[vec];
+ if (!node)
+ handle_badint(fp);
+ else {
+ do {
+ node->handler(vec, node->dev_id);
+ node = node->next;
+ } while (node);
+ }
+
+ set_irq_regs(old_regs);
+}
+
+/*
+ * show_interrupts( struct seq_file *p, void *v)
+ *
+ * Called to show all the current interrupt information.
+ */
+int show_interrupts(struct seq_file *p, void *v)
+{
+ struct irq_controller *contr;
+ struct irq_node *node;
+ int i = *(loff_t *) v;
+
+ if ((i < NR_IRQS) && (irq_list[i])) {
+ contr = irq_controller[i];
+ node = irq_list[i];
+ seq_printf(p, "%-8s %3u: %10u %s", contr->name, i,
+ kstat_cpu(0).irqs[i], node->devname);
+ while ((node = node->next))
+ seq_printf(p, ", %s", node->devname);
+
+ seq_printf(p, "\n");
+ }
+
+ return 0;
+}
+
+/*
+ * get_irq_node(void)
+ *
+ * Get an irq node from the pool.
+ */
+struct irq_node *get_irq_node(void)
+{
+ struct irq_node *p = pool;
+ int i;
+
+ for (i = 0; i < POOL_SIZE; i++, p++) {
+ if (!p->handler) {
+ memset(p, 0, sizeof(struct irq_node));
+ return p;
+ }
+ }
+ printk(KERN_INFO "%s(%s:%d): No more irq nodes, I suggest you \
+ increase POOL_SIZE", __FUNCTION__, __FILE__, __LINE__);
+ return NULL;
+}
+
+void init_irq_proc(void)
+{
+ /* Insert /proc/irq driver here */
+}
+
+int setup_irq(unsigned int irq, struct irq_node *node)
+{
+ struct irq_controller *contr;
+ struct irq_node **prev;
+ unsigned long flags;
+
+ if (irq >= NR_IRQS || !irq_controller[irq]) {
+ printk("%s: Incorrect IRQ %d from %s\n",
+ __FUNCTION__, irq, node->devname);
+ return -ENXIO;
+ }
+
+ contr = irq_controller[irq];
+ spin_lock_irqsave(&contr->lock, flags);
+
+ prev = irq_list + irq;
+ if (*prev) {
+ /* Can't share interrupts unless both agree to */
+ if (!((*prev)->flags & node->flags & IRQF_SHARED)) {
+ spin_unlock_irqrestore(&contr->lock, flags);
+ return -EBUSY;
+ }
+ while (*prev)
+ prev = &(*prev)->next;
+ }
+
+ if (!irq_list[irq]) {
+ if (contr->startup)
+ contr->startup(irq);
+ else
+ contr->enable(irq);
+ }
+ node->next = NULL;
+ *prev = node;
+
+ spin_unlock_irqrestore(&contr->lock, flags);
+
+ return 0;
+}
+
+int request_irq(unsigned int irq,
+ irq_handler_t handler,
+ unsigned long flags, const char *devname, void *dev_id)
+{
+ struct irq_node *node = get_irq_node();
+ int res;
+
+ if (!node)
+ return -ENOMEM;
+
+ node->handler = handler;
+ node->flags = flags;
+ node->dev_id = dev_id;
+ node->devname = devname;
+
+ res = setup_irq(irq, node);
+ if (res)
+ node->handler = NULL;
+
+ return res;
+}
+EXPORT_SYMBOL(request_irq);
+
+void free_irq(unsigned int irq, void *dev_id)
+{
+ struct irq_controller *contr;
+ struct irq_node **p, *node;
+ unsigned long flags;
+
+ if (irq >= NR_IRQS || !irq_controller[irq]) {
+ printk(KERN_DEBUG "%s: Incorrect IRQ %d\n", __FUNCTION__, irq);
+ return;
+ }
+
+ contr = irq_controller[irq];
+ spin_lock_irqsave(&contr->lock, flags);
+
+ p = irq_list + irq;
+ while ((node = *p)) {
+ if (node->dev_id == dev_id)
+ break;
+ p = &node->next;
+ }
+
+ if (node) {
+ *p = node->next;
+ node->handler = NULL;
+ } else
+ printk(KERN_DEBUG "%s: Removing probably wrong IRQ %d\n",
+ __FUNCTION__, irq);
+
+ if (!irq_list[irq]) {
+ if (contr->shutdown)
+ contr->shutdown(irq);
+ else
+ contr->disable(irq);
+ }
+
+ spin_unlock_irqrestore(&contr->lock, flags);
+}
+EXPORT_SYMBOL(free_irq);
+
+void enable_irq(unsigned int irq)
+{
+ struct irq_controller *contr;
+ unsigned long flags;
+
+ if (irq >= NR_IRQS || !irq_controller[irq]) {
+ printk(KERN_DEBUG "%s: Incorrect IRQ %d\n", __FUNCTION__, irq);
+ return;
+ }
+
+ contr = irq_controller[irq];
+ spin_lock_irqsave(&contr->lock, flags);
+ if (irq_depth[irq]) {
+ if (!--irq_depth[irq]) {
+ if (contr->enable)
+ contr->enable(irq);
+ }
+ } else
+ WARN_ON(1);
+ spin_unlock_irqrestore(&contr->lock, flags);
+}
+EXPORT_SYMBOL(enable_irq);
+
+void disable_irq(unsigned int irq)
+{
+ struct irq_controller *contr;
+ unsigned long flags;
+
+ if (irq >= NR_IRQS || !irq_controller[irq]) {
+ printk(KERN_DEBUG "%s: Incorrect IRQ %d\n", __FUNCTION__, irq);
+ return;
+ }
+
+ contr = irq_controller[irq];
+ spin_lock_irqsave(&contr->lock, flags);
+ if (!irq_depth[irq]++) {
+ if (contr->disable)
+ contr->disable(irq);
+ }
+ spin_unlock_irqrestore(&contr->lock, flags);
+}
+EXPORT_SYMBOL(disable_irq);
+
+unsigned long probe_irq_on(void)
+{
+ return 0;
+}
+EXPORT_SYMBOL(probe_irq_on);
+
+int probe_irq_off(unsigned long irqs)
+{
+ return 0;
+}
+EXPORT_SYMBOL(probe_irq_off);
+
+asmlinkage void handle_badint(struct pt_regs *regs)
+{
+ kstat_cpu(0).irqs[0]++;
+ num_spurious++;
+ printk(KERN_DEBUG "unexpected interrupt from %u\n", regs->vector);
+}
+EXPORT_SYMBOL(handle_badint);
+
+#ifdef CONFIG_M54455
+/*
+ * M5445X Implementation
+ */
+void m5445x_irq_enable(unsigned int irq)
+{
+ /* enable the interrupt hardware */
+ if (irq < 64)
+ return;
+
+ /* adjust past non-hardware ints */
+ irq -= 64;
+
+ /* check for eport */
+ if ((irq > 0) && (irq < 8)) {
+ /* enable eport */
+ MCF_EPORT_EPPAR &= ~(3 << (irq*2)); /* level */
+ MCF_EPORT_EPDDR &= ~(1 << irq); /* input */
+ MCF_EPORT_EPIER |= 1 << irq; /* irq enabled */
+ }
+
+ if (irq < 64) {
+ /* controller 0 */
+ MCF_INTC0_ICR(irq) = 0x02;
+ MCF_INTC0_CIMR = irq;
+ } else {
+ /* controller 1 */
+ irq -= 64;
+ MCF_INTC1_ICR(irq) = 0x02;
+ MCF_INTC1_CIMR = irq;
+ }
+}
+
+void m5445x_irq_disable(unsigned int irq)
+{
+ /* disable the interrupt hardware */
+ if (irq < 64)
+ return;
+
+ /* adjust past non-hardware ints */
+ irq -= 64;
+
+ /* check for eport */
+ if ((irq > 0) && (irq < 8)) {
+ /* disable eport */
+ MCF_EPORT_EPIER &= ~(1 << irq);
+ }
+
+ if (irq < 64) {
+ /* controller 0 */
+ MCF_INTC0_ICR(irq) = 0x00;
+ MCF_INTC0_SIMR = irq;
+ } else {
+ /* controller 1 */
+ irq -= 64;
+ MCF_INTC1_ICR(irq) = 0x00;
+ MCF_INTC1_SIMR = irq;
+ }
+}
+#endif
--- /dev/null
+++ b/arch/m68k/coldfire/iomap.c
@@ -0,0 +1,54 @@
+/*
+ * arch/m68k/coldfire/iomap.c
+ *
+ * Generic coldfire iomap interface
+ *
+ * Based on the sh64 iomap.c by Paul Mundt.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/pci.h>
+#include <asm/io.h>
+
+void __iomem *__attribute__ ((weak))
+ioport_map(unsigned long port, unsigned int len)
+{
+ return (void __iomem *)port;
+}
+EXPORT_SYMBOL(pci_iomap);
+
+void ioport_unmap(void __iomem *addr)
+{
+ /* Nothing .. */
+}
+EXPORT_SYMBOL(pci_iounmap);
+
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
+{
+ unsigned long start = pci_resource_start(dev, bar);
+ unsigned long len = pci_resource_len(dev, bar);
+ unsigned long flags = pci_resource_flags(dev, bar);
+printk(KERN_INFO "PCI_IOMAP: BAR=%d START=0x%lx LEN=0x%lx FLAGS=0x%lx\n",
+ bar, start, len, flags);
+
+ if (!len)
+ return NULL;
+ if (max && len > max)
+ len = max;
+ if (flags & IORESOURCE_IO)
+ return ioport_map(start, len);
+ if (flags & IORESOURCE_MEM)
+ return (void __iomem *)start;
+
+ /* What? */
+ return NULL;
+}
+EXPORT_SYMBOL(ioport_map);
+
+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+ /* Nothing .. */
+}
+EXPORT_SYMBOL(ioport_unmap);
--- /dev/null
+++ b/arch/m68k/coldfire/mcf5445x-pci.c
@@ -0,0 +1,427 @@
+/*
+ * arch/m68k/coldfire/mcf5445x-pci.c
+ *
+ * Coldfire M5445x specific PCI implementation.
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Kurt Mahan <kmahan@freescale.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/pci.h>
+
+#include <asm/mcfsim.h>
+#include <asm/pci.h>
+#include <asm/irq.h>
+
+/*
+ * Layout MCF5445x to PCI memory mappings:
+ *
+ * WIN MCF5445x PCI TYPE
+ * --- -------- --- ----
+ * [0] 0xA0000000 -> 0xA7FFFFFF 0xA0000000 -> 0xA7FFFFFF MEM
+ * [1] 0xA8000000 -> 0xABFFFFFF 0xA8000000 -> 0xABFFFFFF MEM
+ * [2] 0xAC000000 -> 0xAFFFFFFF 0xAC000000 -> 0xAFFFFFFF IO
+ */
+
+#define MCF5445X_PCI_MEM_BASE 0xA0000000
+#define MCF5445X_PCI_MEM_SIZE 0x0C000000
+
+#define MCF5445X_PCI_CONFIG_BASE 0xAC000000
+#define MCF5445X_PCI_CONFIG_SIZE 0x04000000
+
+#define MCF5445X_PCI_IO_BASE 0xAC000000
+#define MCF5445X_PCI_IO_SIZE 0x04000000
+
+/* PCI Bus memory resource block */
+struct resource pci_iomem_resource = {
+ .name = "PCI memory space",
+ .start = MCF5445X_PCI_MEM_BASE,
+ .flags = IORESOURCE_MEM,
+ .end = MCF5445X_PCI_MEM_BASE + MCF5445X_PCI_MEM_SIZE - 1
+};
+
+/* PCI Bus ioport resource block */
+struct resource pci_ioport_resource = {
+ .name = "PCI I/O space",
+ .start = MCF5445X_PCI_IO_BASE,
+ .flags = IORESOURCE_IO,
+ .end = MCF5445X_PCI_IO_BASE + MCF5445X_PCI_IO_SIZE - 1
+};
+
+/*
+ * The M54455EVB multiplexes all the PCI interrupts via
+ * the FPGA and routes them to a single interrupt. The
+ * PCI spec requires all PCI interrupt routines be smart
+ * enough to sort out their own interrupts.
+ * The interrupt source from the FPGA is configured
+ * to EPORT 3.
+ */
+#define MCF5445X_PCI_IRQ 0x43
+
+#define PCI_SLOTS 4
+
+/*
+ * FPGA Info
+ */
+#define FPGA_PCI_IRQ_ENABLE (u32 *)0x09000000
+#define FPGA_PCI_IRQ_STATUS (u32 *)0x09000004
+#define FPGA_PCI_IRQ_ROUTE (u32 *)0x0900000c
+#define FPGA_SEVEN_LED (u32 *)0x09000014
+
+extern void set_fpga(u32 *addr, u32 val);
+
+#ifdef DEBUG
+void mcf5445x_pci_dumpregs(void);
+#endif
+
+/*
+ * static void mcf5445x_conf_device(struct pci_dev *dev)
+ *
+ * Machine dependent Configure the given device.
+ *
+ * Parameters:
+ *
+ * dev - the pci device.
+ */
+void __init
+mcf5445x_conf_device(struct pci_dev *dev)
+{
+ set_fpga(FPGA_PCI_IRQ_ENABLE, 0x0f);
+}
+
+/*
+ * int mcf5445x_pci_config_read(unsigned int seg, unsigned int bus,
+ * unsigned int devfn, int reg,
+ * u32 *value)
+ *
+ * Read from PCI configuration space.
+ *
+ */
+int mcf5445x_pci_config_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ u32 addr = MCF_PCI_PCICAR_BUSNUM(bus) |
+ MCF_PCI_PCICAR_DEVNUM(PCI_SLOT(devfn)) |
+ MCF_PCI_PCICAR_FUNCNUM(PCI_FUNC(devfn)) |
+ MCF_PCI_PCICAR_DWORD(reg) |
+ MCF_PCI_PCICAR_E;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255)) {
+ *value = -1;
+ return -EINVAL;
+ }
+
+ /* setup for config mode */
+ MCF_PCI_PCICAR = addr;
+ __asm__ __volatile__("nop");
+
+ switch (len) {
+ case 1:
+ *value = *(volatile u8 *)(MCF5445X_PCI_CONFIG_BASE+(reg&3));
+ break;
+ case 2:
+ *value = le16_to_cpu(*(volatile u16 *)
+ (MCF5445X_PCI_CONFIG_BASE + (reg&2)));
+ break;
+ case 4:
+ *value = le32_to_cpu(*(volatile u32 *)
+ (MCF5445X_PCI_CONFIG_BASE));
+ break;
+ }
+
+ /* clear config mode */
+ MCF_PCI_PCICAR = ~MCF_PCI_PCICAR_E;
+ __asm__ __volatile__("nop");
+
+ return 0;
+}
+
+/*
+ * int mcf5445x_pci_config_write(unsigned int seg, unsigned int bus,
+ * unsigned int devfn, int reg,
+ * u32 *value)
+ *
+ * Write to PCI configuration space
+ */
+int mcf5445x_pci_config_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ u32 addr = MCF_PCI_PCICAR_BUSNUM(bus) |
+ MCF_PCI_PCICAR_DEVNUM(PCI_SLOT(devfn)) |
+ MCF_PCI_PCICAR_FUNCNUM(PCI_FUNC(devfn)) |
+ MCF_PCI_PCICAR_DWORD(reg) |
+ MCF_PCI_PCICAR_E;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ /* setup for config mode */
+ MCF_PCI_PCICAR = addr;
+ __asm__ __volatile__("nop");
+
+ switch (len) {
+ case 1:
+ *(volatile u8 *)(MCF5445X_PCI_CONFIG_BASE+(reg&3)) = (u8)value;
+ break;
+ case 2:
+ *(volatile u16 *)(MCF5445X_PCI_CONFIG_BASE+(reg&2)) =
+ cpu_to_le16((u16)value);
+ break;
+ case 4:
+ *(volatile u32 *)(MCF5445X_PCI_CONFIG_BASE) =
+ cpu_to_le32(value);
+ break;
+ }
+
+ /* clear config mode */
+ MCF_PCI_PCICAR = ~MCF_PCI_PCICAR_E;
+ __asm__ __volatile__("nop");
+
+ return 0;
+}
+
+/* hardware operations */
+static struct pci_raw_ops mcf5445x_pci_ops = {
+ .read = mcf5445x_pci_config_read,
+ .write = mcf5445x_pci_config_write,
+};
+
+/*
+ * irqreturn_t mcf5445x_pci_interrupt( int irq, void *dev)
+ *
+ * PCI controller interrupt handler.
+ */
+static irqreturn_t
+mcf5445x_pci_interrupt(int irq, void *dev)
+{
+ u32 status = MCF_PCI_PCIGSCR;
+#ifdef DEBUG
+ printk(KERN_INFO "PCI: Controller irq status=0x%08x\n", status);
+#endif
+ /* clear */
+ MCF_PCI_PCIGSCR = status;
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * irqreturn_t mcf5445x_pci_arb_interrupt( int irq, void *dev)
+ *
+ * PCI Arbiter interrupt handler.
+ */
+static irqreturn_t
+mcf5445x_pci_arb_interrupt(int irq, void *dev)
+{
+ u32 status = MCF_PCIARB_PASR;
+#ifdef DEBUG
+ printk(KERN_INFO "PCI: Arbiter irq status=0x%08x\n", status);
+#endif
+ /* clear */
+ MCF_PCIARB_PASR = status;
+ return IRQ_HANDLED;
+}
+
+/*
+ * struct pci_bus_info *init_mcf5445x_pci(void)
+ *
+ * Machine specific initialisation:
+ *
+ * - Allocate and initialise a 'pci_bus_info' structure
+ * - Initialize hardware
+ *
+ * Result: pointer to 'pci_bus_info' structure.
+ */
+int __init
+init_mcf5445x_pci(void)
+{
+ /*
+ * Initialize the PCI core
+ */
+
+ /* arbitration controller */
+ MCF_PCIARB_PACR = MCF_PCIARB_PACR_INTMPRI |
+ MCF_PCIARB_PACR_EXTMPRI(0x0f) |
+ MCF_PCIARB_PACR_INTMINTEN |
+ MCF_PCIARB_PACR_EXTMINTEN(0x0f);
+
+ /* pci pin assignment regs */
+ MCF_GPIO_PAR_PCI = MCF_GPIO_PAR_PCI_GNT0 |
+ MCF_GPIO_PAR_PCI_GNT1 |
+ MCF_GPIO_PAR_PCI_GNT2 |
+ MCF_GPIO_PAR_PCI_GNT3_GNT3 |
+ MCF_GPIO_PAR_PCI_REQ0 |
+ MCF_GPIO_PAR_PCI_REQ1 |
+ MCF_GPIO_PAR_PCI_REQ2 |
+ MCF_GPIO_PAR_PCI_REQ3_REQ3;
+
+ /* target control reg */
+ MCF_PCI_PCITCR = MCF_PCI_PCITCR_P |
+ MCF_PCI_PCITCR_WCT(8);
+
+ /* PCI MEM address */
+ MCF_PCI_PCIIW0BTAR = 0xA007A000;
+
+ /* PCI MEM address */
+ MCF_PCI_PCIIW1BTAR = 0xA803A800;
+
+ /* PCI IO address */
+ MCF_PCI_PCIIW2BTAR = 0xAC03AC00;
+
+ /* window control */
+ MCF_PCI_PCIIWCR = MCF_PCI_PCIIWCR_WINCTRL0_ENABLE |
+ MCF_PCI_PCIIWCR_WINCTRL0_MEMREAD |
+ MCF_PCI_PCIIWCR_WINCTRL1_ENABLE |
+ MCF_PCI_PCIIWCR_WINCTRL1_MEMREAD |
+ MCF_PCI_PCIIWCR_WINCTRL2_ENABLE |
+ MCF_PCI_PCIIWCR_WINCTRL2_IO;
+
+ /* initiator control reg */
+ MCF_PCI_PCIICR = 0x00ff;
+
+ /* type 0 - command */
+ MCF_PCI_PCISCR = MCF_PCI_PCISCR_MW | /* mem write/inval */
+ MCF_PCI_PCISCR_B | /* bus master enable */
+ MCF_PCI_PCISCR_M; /* mem access enable */
+
+ /* type 0 - config reg */
+ MCF_PCI_PCICR1 = MCF_PCI_PCICR1_CACHELINESIZE(8) |
+ MCF_PCI_PCICR1_LATTIMER(0xff);
+
+ /* type 0 - config 2 reg */
+ MCF_PCI_PCICR2 = 0;
+
+ /* target control reg */
+ MCF_PCI_PCITCR2 = MCF_PCI_PCITCR2_B0E |
+ MCF_PCI_PCITCR2_B4E;
+
+ /* translate addresses from PCI[0] to CF[SDRAM] */
+ MCF_PCI_PCITBATR0 = MCF_RAMBAR1 | MCF_PCI_PCITBATR0_EN;
+ MCF_PCI_PCITBATR4 = MCF_RAMBAR1 | MCF_PCI_PCITBATR4_EN;
+
+ /* setup controller interrupt handlers */
+ if (request_irq(55+128, mcf5445x_pci_interrupt, IRQF_SHARED,
+ "PCI Controller", NULL))
+ printk(KERN_ERR "PCI: Unable to register controller irq\n");
+
+ if (request_irq (56+128, mcf5445x_pci_arb_interrupt, IRQF_SHARED, "PCI Arbiter", NULL))
+ printk(KERN_ERR "PCI: Unable to register arbiter irq\n");
+
+ /* global control - clear reset bit */
+ MCF_PCI_PCIGSCR = MCF_PCI_PCIGSCR_SEE |
+ MCF_PCI_PCIGSCR_PEE;
+
+ /* let everything settle */
+ udelay(1000);
+
+ /* allocate bus ioport resource */
+ if (request_resource(&ioport_resource, &pci_ioport_resource) < 0)
+ printk(KERN_ERR "PCI: Unable to alloc ioport resource\n");
+
+ /* allocate bus iomem resource */
+ if (request_resource(&iomem_resource, &pci_iomem_resource) < 0)
+ printk(KERN_ERR "PCI: Unable to alloc iomem resource\n");
+
+ /* setup FPGA to route PCI to IRQ3(67), SW7 to IRQ7, SW6 to IRQ4 */
+ set_fpga(FPGA_PCI_IRQ_ENABLE, 0x00000000);
+ set_fpga(FPGA_PCI_IRQ_ROUTE, 0x00000039);
+ set_fpga(FPGA_SEVEN_LED, 0x000000FF);
+
+ raw_pci_ops = &mcf5445x_pci_ops;
+
+ return 0;
+}
+
+/*
+ * DEBUGGING
+ */
+
+#ifdef DEBUG
+struct regdump {
+ u32 addr;
+ char regname[16];
+};
+
+struct regdump type0regs[] = {
+ { 0xfc0a8000, "PCIIDR" },
+ { 0xfc0a8004, "PCISCR" },
+ { 0xfc0a8008, "PCICCRIR" },
+ { 0xfc0a800c, "PCICR1" },
+ { 0xfc0a8010, "PCIBAR0" },
+ { 0xfc0a8014, "PCIBAR1" },
+ { 0xfc0a8018, "PCIBAR2" },
+ { 0xfc0a801c, "PCIBAR3" },
+ { 0xfc0a8020, "PCIBAR4" },
+ { 0xfc0a8024, "PCIBAR5" },
+ { 0xfc0a8028, "PCICCPR" },
+ { 0xfc0a802c, "PCISID" },
+ { 0xfc0a8030, "PCIERBAR" },
+ { 0xfc0a8034, "PCICPR" },
+ { 0xfc0a803c, "PCICR2" },
+ { 0, "" }
+};
+
+struct regdump genregs[] = {
+ { 0xfc0a8060, "PCIGSCR" },
+ { 0xfc0a8064, "PCITBATR0" },
+ { 0xfc0a8068, "PCITBATR1" },
+ { 0xfc0a806c, "PCITCR1" },
+ { 0xfc0a8070, "PCIIW0BTAR" },
+ { 0xfc0a8074, "PCIIW1BTAR" },
+ { 0xfc0a8078, "PCIIW2BTAR" },
+ { 0xfc0a8080, "PCIIWCR" },
+ { 0xfc0a8084, "PCIICR" },
+ { 0xfc0a8088, "PCIISR" },
+ { 0xfc0a808c, "PCITCR2" },
+ { 0xfc0a8090, "PCITBATR0" },
+ { 0xfc0a8094, "PCITBATR1" },
+ { 0xfc0a8098, "PCITBATR2" },
+ { 0xfc0a809c, "PCITBATR3" },
+ { 0xfc0a80a0, "PCITBATR4" },
+ { 0xfc0a80a4, "PCITBATR5" },
+ { 0xfc0a80a8, "PCIINTR" },
+ { 0xfc0a80f8, "PCICAR" },
+ { 0, "" }
+};
+
+struct regdump arbregs[] = {
+ { 0xfc0ac000, "PACR" },
+ { 0xfc0ac004, "PASR" }, /* documentation error */
+ { 0, "" }
+};
+
+/*
+ * void mcf5445x_pci_dumpregs()
+ *
+ * Dump out all the PCI registers
+ */
+void
+mcf5445x_pci_dumpregs(void)
+{
+ struct regdump *reg;
+
+ printk(KERN_INFO "*** MCF5445x PCI TARGET 0 REGISTERS ***\n");
+
+ reg = type0regs;
+ while (reg->addr) {
+ printk(KERN_INFO "0x%08x 0x%08x %s\n", reg->addr,
+ *((u32 *)reg->addr), reg->regname);
+ reg++;
+ }
+
+ printk(KERN_INFO "\n*** MCF5445x PCI GENERAL REGISTERS ***\n");
+ reg = genregs;
+ while (reg->addr) {
+ printk(KERN_INFO "0x%08x 0x%08x %s\n", reg->addr,
+ *((u32 *)reg->addr), reg->regname);
+ reg++;
+ }
+ printk(KERN_INFO "\n*** MCF5445x PCI ARBITER REGISTERS ***\n");
+ reg = arbregs;
+ while (reg->addr) {
+ printk(KERN_INFO "0x%08x 0x%08x %s\n", reg->addr,
+ *((u32 *)reg->addr), reg->regname);
+ reg++;
+ }
+}
+#endif /* DEBUG */
--- /dev/null
+++ b/arch/m68k/coldfire/muldi3.S
@@ -0,0 +1,64 @@
+/*
+ * Coldfire muldi3 assembly verion
+ */
+
+#include <linux/linkage.h>
+.globl __muldi3
+
+ENTRY(__muldi3)
+ linkw %fp,#0
+ lea %sp@(-32),%sp
+ moveml %d2-%d7/%a2-%a3,%sp@
+ moveal %fp@(8), %a2
+ moveal %fp@(12), %a3
+ moveal %fp@(16), %a0
+ moveal %fp@(20),%a1
+ movel %a3,%d2
+ andil #65535,%d2
+ movel %a3,%d3
+ clrw %d3
+ swap %d3
+ movel %a1,%d0
+ andil #65535,%d0
+ movel %a1,%d1
+ clrw %d1
+ swap %d1
+ movel %d2,%d7
+ mulsl %d0,%d7
+ movel %d2,%d4
+ mulsl %d1,%d4
+ movel %d3,%d2
+ mulsl %d0,%d2
+ mulsl %d1,%d3
+ movel %d7,%d0
+ clrw %d0
+ swap %d0
+ addl %d0,%d4
+ addl %d2,%d4
+ cmpl %d4,%d2
+ blss 1f
+ addil #65536,%d3
+1:
+ movel %d4,%d0
+ clrw %d0
+ swap %d0
+ movel %d3,%d5
+ addl %d0,%d5
+ movew %d4,%d6
+ swap %d6
+ movew %d7,%d6
+ movel %d5,%d0
+ movel %d6,%d1
+ movel %a3,%d2
+ movel %a0,%d3
+ mulsl %d3,%d2
+ movel %a2,%d3
+ movel %a1,%d4
+ mulsl %d4,%d3
+ addl %d3,%d2
+ movel %d2,%d0
+ addl %d5,%d0
+ moveml %sp@, %d2-%d7/%a2-%a3
+ lea %sp@(32),%sp
+ unlk %fp
+ rts
--- /dev/null
+++ b/arch/m68k/coldfire/pci.c
@@ -0,0 +1,245 @@
+/*
+ * linux/arch/m68k/coldfire/pci.c
+ *
+ * PCI initialization for Coldfire architectures.
+ *
+ * Currently Supported:
+ * M5445x
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Kurt Mahan <kmahan@freescale.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include <asm/mcfsim.h>
+#include <asm/pci.h>
+
+/* pci ops for reading/writing config */
+struct pci_raw_ops *raw_pci_ops;
+
+/* pci debug flag */
+static int debug_pci;
+
+#ifdef CONFIG_M54455
+extern int init_mcf5445x_pci(void);
+extern void mcf5445x_conf_device(struct pci_dev *dev);
+extern void mcf5445x_pci_dumpregs(void);
+
+extern struct resource pci_ioport_resource;
+extern struct resource pci_iomem_resource;
+#endif
+
+static int
+pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 *value)
+{
+ return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+}
+
+static int
+pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 value)
+{
+ return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+}
+
+struct pci_ops pci_root_ops = {
+ .read = pci_read,
+ .write = pci_write,
+};
+
+/*
+ * pcibios_setup(char *)
+ *
+ * Initialize the pcibios based on cmd line params.
+ */
+char * __init
+pcibios_setup(char *str)
+{
+ if (!strcmp(str, "debug")) {
+ debug_pci = 1;
+ return NULL;
+ }
+ return str;
+}
+
+/*
+ * We need to avoid collisions with `mirrored' VGA ports
+ * and other strange ISA hardware, so we always want the
+ * addresses to be allocated in the 0x000-0x0ff region
+ * modulo 0x400.
+ *
+ * Why? Because some silly external IO cards only decode
+ * the low 10 bits of the IO address. The 0x00-0xff region
+ * is reserved for motherboard devices that decode all 16
+ * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
+ * but we want to try to avoid allocating at 0x2900-0x2bff
+ * which might have be mirrored at 0x0100-0x03ff..
+ */
+void
+pcibios_align_resource(void *data, struct resource *res, resource_size_t size,
+ resource_size_t align)
+{
+ struct pci_dev *dev = data;
+
+ if (res->flags & IORESOURCE_IO) {
+ resource_size_t start = res->start;
+
+ if (size > 0x100)
+ printk(KERN_ERR "PCI: I/O Region %s/%d too large"
+ " (%ld bytes)\n", pci_name(dev),
+ dev->resource - res, (long int)size);
+
+ if (start & 0x300) {
+ start = (start + 0x3ff) & ~0x3ff;
+ res->start = start;
+ }
+ }
+}
+
+/*
+ * Swizzle the device pin each time we cross a bridge
+ * and return the slot number.
+ */
+static u8 __devinit
+pcibios_swizzle(struct pci_dev *dev, u8 *pin)
+{
+ return 0;
+}
+
+/*
+ * Map a slot/pin to an IRQ.
+ */
+static int
+pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ return 0x43;
+}
+
+/*
+ * pcibios_update_irq(struct pci_dev *dev, int irq)
+ *
+ * Update a PCI interrupt.
+ */
+void __init
+pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
+
+/*
+ * pcibios_enable_device(struct pci_dev *dev, int mask)
+ *
+ * Enable a device on the PCI bus.
+ */
+int
+pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+ u16 cmd, old_cmd;
+ int idx;
+ struct resource *r;
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ old_cmd = cmd;
+ for (idx = 0; idx < 6; idx++) {
+ r = &dev->resource[idx];
+ if (!r->start && r->end) {
+ printk(KERN_ERR "PCI: Device %s not available because "
+ "of resource collisions\n", pci_name(dev));
+ return -EINVAL;
+ }
+ if (r->flags & IORESOURCE_IO)
+ cmd |= PCI_COMMAND_IO;
+ if (r->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+ if (cmd != old_cmd) {
+ printk("PCI: Enabling device %s (%04x -> %04x)\n",
+ pci_name(dev), old_cmd, cmd);
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+#ifdef CONFIG_M54455
+ mcf5445x_conf_device(dev);
+#endif
+ }
+
+ return 0;
+}
+
+/*
+ * pcibios_fixup_bus(struct pci_bus *bus)
+ */
+void __init
+pcibios_fixup_bus(struct pci_bus *bus)
+{
+ struct pci_dev *dev = bus->self;
+
+ if (!dev) {
+ /* Root bus. */
+#ifdef CONFIG_M54455
+ bus->resource[0] = &pci_ioport_resource;
+ bus->resource[1] = &pci_iomem_resource;
+#endif
+ }
+}
+
+/*
+ * pcibios_init(void)
+ *
+ * Allocate/initialize low level pci bus/devices.
+ */
+static int __init
+pcibios_init(void)
+{
+ struct pci_bus *bus;
+
+ if (!raw_pci_ops) {
+ printk(KERN_WARNING "PCIBIOS: FATAL: NO PCI Hardware found\n");
+ return 0;
+ }
+
+ /* allocate and scan the (only) bus */
+ bus = pci_scan_bus_parented(NULL, 0, &pci_root_ops, NULL);
+
+ /* setup everything */
+ if (bus) {
+ /* compute the bridge window sizes */
+ pci_bus_size_bridges(bus);
+
+ /* (re)assign device resources */
+ pci_bus_assign_resources(bus);
+
+ /* add the bus to the system */
+ pci_bus_add_devices(bus);
+
+ /* fixup irqs */
+ pci_fixup_irqs(pcibios_swizzle, pcibios_map_irq);
+ }
+
+ return 0;
+}
+
+/*
+ * pci_init(void)
+ *
+ * Initialize the PCI Hardware.
+ */
+static int __init
+pci_init(void)
+{
+#if defined(CONFIG_M54455)
+ init_mcf5445x_pci();
+#endif
+ if (!raw_pci_ops)
+ printk(KERN_ERR "PCI: FATAL: NO PCI Detected\n");
+
+ return 0;
+}
+
+/* low level hardware (first) */
+arch_initcall(pci_init);
+
+/* basic bios init (second) */
+subsys_initcall(pcibios_init);
--- /dev/null
+++ b/arch/m68k/coldfire/signal.c
@@ -0,0 +1,868 @@
+/*
+ * linux/arch/m68k/kernel/signal.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+/*
+ * Derived from m68k/kernel/signal.c and the original authors are credited
+ * there.
+ *
+ * Coldfire support by:
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Copyright Freescale Semiconductor, Inc 2007
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/syscalls.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/highuid.h>
+#include <linux/personality.h>
+#include <linux/tty.h>
+#include <linux/binfmts.h>
+
+#include <asm/setup.h>
+#include <asm/cf_uaccess.h>
+#include <asm/cf_pgtable.h>
+#include <asm/traps.h>
+#include <asm/ucontext.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs);
+
+const int frame_extra_sizes[16] = {
+ [1] = -1,
+ [2] = sizeof(((struct frame *)0)->un.fmt2),
+ [3] = sizeof(((struct frame *)0)->un.fmt3),
+ [4] = 0,
+ [5] = -1,
+ [6] = -1,
+ [7] = sizeof(((struct frame *)0)->un.fmt7),
+ [8] = -1,
+ [9] = sizeof(((struct frame *)0)->un.fmt9),
+ [10] = sizeof(((struct frame *)0)->un.fmta),
+ [11] = sizeof(((struct frame *)0)->un.fmtb),
+ [12] = -1,
+ [13] = -1,
+ [14] = -1,
+ [15] = -1,
+};
+
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int do_sigsuspend(struct pt_regs *regs)
+{
+ old_sigset_t mask = regs->d3;
+ sigset_t saveset;
+
+ mask &= _BLOCKABLE;
+ spin_lock_irq(&current->sighand->siglock);
+ saveset = current->blocked;
+ siginitset(&current->blocked, mask);
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ regs->d0 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(&saveset, regs))
+ return -EINTR;
+ }
+}
+
+asmlinkage int
+do_rt_sigsuspend(struct pt_regs *regs)
+{
+ sigset_t __user *unewset = (sigset_t __user *)regs->d1;
+ size_t sigsetsize = (size_t)regs->d2;
+ sigset_t saveset, newset;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset, unewset, sizeof(newset)))
+ return -EFAULT;
+ sigdelsetmask(&newset, ~_BLOCKABLE);
+
+ spin_lock_irq(&current->sighand->siglock);
+ saveset = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ regs->d0 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(&saveset, regs))
+ return -EINTR;
+ }
+}
+
+asmlinkage int
+sys_sigaction(int sig, const struct old_sigaction __user *act,
+ struct old_sigaction __user *oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ if (act) {
+ old_sigset_t mask;
+ if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+ __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+ return -EFAULT;
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ __get_user(mask, &act->sa_mask);
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+ __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+ return -EFAULT;
+ __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+ }
+
+ return ret;
+}
+
+asmlinkage int
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
+{
+ return do_sigaltstack(uss, uoss, rdusp());
+}
+
+
+/*
+ * Do a signal return; undo the signal stack.
+ *
+ * Keep the return code on the stack quadword aligned!
+ * That makes the cache flush below easier.
+ */
+
+struct sigframe
+{
+ char __user *pretcode;
+ int sig;
+ int code;
+ struct sigcontext __user *psc;
+ char retcode[16];
+ unsigned long extramask[_NSIG_WORDS-1];
+ struct sigcontext sc;
+};
+
+struct rt_sigframe
+{
+ char __user *pretcode;
+ int sig;
+ struct siginfo __user *pinfo;
+ void __user *puc;
+ char retcode[16];
+ struct siginfo info;
+ struct ucontext uc;
+};
+
+#define FPCONTEXT_SIZE 216
+#define uc_fpstate uc_filler[0]
+#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4]
+#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1]
+
+#ifdef CONFIG_FPU
+static unsigned char fpu_version; /* version num of fpu, set by setup_frame */
+
+static inline int restore_fpu_state(struct sigcontext *sc)
+{
+ int err = 1;
+
+ if (FPU_IS_EMU) {
+ /* restore registers */
+ memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12);
+ memcpy(current->thread.fp, sc->sc_fpregs, 24);
+ return 0;
+ }
+
+ if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
+ /* Verify the frame format. */
+ if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version))
+ goto out;
+ if (CPU_IS_020_OR_030) {
+ if (m68k_fputype & FPU_68881 &&
+ !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4))
+ goto out;
+ if (m68k_fputype & FPU_68882 &&
+ !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4))
+ goto out;
+ } else if (CPU_IS_040) {
+ if (!(sc->sc_fpstate[1] == 0x00 ||
+ sc->sc_fpstate[1] == 0x28 ||
+ sc->sc_fpstate[1] == 0x60))
+ goto out;
+ } else if (CPU_IS_060) {
+ if (!(sc->sc_fpstate[3] == 0x00 ||
+ sc->sc_fpstate[3] == 0x60 ||
+ sc->sc_fpstate[3] == 0xe0))
+ goto out;
+ } else
+ goto out;
+
+ }
+ err = 0;
+
+out:
+ return err;
+}
+
+static inline int rt_restore_fpu_state(struct ucontext __user *uc)
+{
+ unsigned char fpstate[FPCONTEXT_SIZE];
+ int context_size = CPU_IS_060 ? 8 : 0;
+ fpregset_t fpregs;
+ int err = 1;
+
+ if (FPU_IS_EMU) {
+ /* restore fpu control register */
+ if (__copy_from_user(current->thread.fpcntl,
+ uc->uc_mcontext.fpregs.f_fpcntl, 12))
+ goto out;
+ /* restore all other fpu register */
+ if (__copy_from_user(current->thread.fp,
+ uc->uc_mcontext.fpregs.f_fpregs, 96))
+ goto out;
+ return 0;
+ }
+
+ if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
+ goto out;
+ if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
+ if (!CPU_IS_060)
+ context_size = fpstate[1];
+ /* Verify the frame format. */
+ if (!CPU_IS_060 && (fpstate[0] != fpu_version))
+ goto out;
+ if (CPU_IS_020_OR_030) {
+ if (m68k_fputype & FPU_68881 &&
+ !(context_size == 0x18 || context_size == 0xb4))
+ goto out;
+ if (m68k_fputype & FPU_68882 &&
+ !(context_size == 0x38 || context_size == 0xd4))
+ goto out;
+ } else if (CPU_IS_040) {
+ if (!(context_size == 0x00 ||
+ context_size == 0x28 ||
+ context_size == 0x60))
+ goto out;
+ } else if (CPU_IS_060) {
+ if (!(fpstate[3] == 0x00 ||
+ fpstate[3] == 0x60 ||
+ fpstate[3] == 0xe0))
+ goto out;
+ } else
+ goto out;
+ if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
+ sizeof(fpregs)))
+ goto out;
+ }
+ if (context_size &&
+ __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
+ context_size))
+ goto out;
+ err = 0;
+
+out:
+ return err;
+}
+#endif
+
+static inline int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc,
+ void __user *fp, int *pd0)
+{
+ int fsize, formatvec;
+ struct sigcontext context;
+ int err = 0;
+
+ /* get previous context */
+ if (copy_from_user(&context, usc, sizeof(context)))
+ goto badframe;
+
+ /* restore passed registers */
+ regs->d1 = context.sc_d1;
+ regs->a0 = context.sc_a0;
+ regs->a1 = context.sc_a1;
+ regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff);
+ regs->pc = context.sc_pc;
+ regs->orig_d0 = -1; /* disable syscall checks */
+ wrusp(context.sc_usp);
+ formatvec = context.sc_formatvec;
+ regs->format = formatvec >> 12;
+ regs->vector = formatvec & 0xfff;
+
+#ifdef CONFIG_FPU
+ err = restore_fpu_state(&context);
+#endif
+
+ fsize = frame_extra_sizes[regs->format];
+ if (fsize < 0) {
+ /*
+ * user process trying to return with weird frame format
+ */
+#ifdef DEBUG
+ printk(KERN_DEBUG "user process returning with weird \
+ frame format\n");
+#endif
+ goto badframe;
+ }
+
+ /* OK. Make room on the supervisor stack for the extra junk,
+ * if necessary.
+ */
+
+ {
+ struct switch_stack *sw = (struct switch_stack *)regs - 1;
+ regs->d0 = context.sc_d0;
+#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
+ __asm__ __volatile__
+ (" movel %0,%/sp\n\t"
+ " bra ret_from_signal\n"
+ "4:\n"
+ ".section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,4b\n"
+ ".previous"
+ : /* no outputs, it doesn't ever return */
+ : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
+ "n" (frame_offset), "a" (fp)
+ : "a0");
+#undef frame_offset
+ /*
+ * If we ever get here an exception occurred while
+ * building the above stack-frame.
+ */
+ goto badframe;
+ }
+
+ *pd0 = context.sc_d0;
+ return err;
+
+badframe:
+ return 1;
+}
+
+static inline int
+rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,
+ struct ucontext __user *uc, int *pd0)
+{
+ int fsize, temp;
+ greg_t __user *gregs = uc->uc_mcontext.gregs;
+ unsigned long usp;
+ int err;
+
+ err = __get_user(temp, &uc->uc_mcontext.version);
+ if (temp != MCONTEXT_VERSION)
+ goto badframe;
+ /* restore passed registers */
+ err |= __get_user(regs->d0, &gregs[0]);
+ err |= __get_user(regs->d1, &gregs[1]);
+ err |= __get_user(regs->d2, &gregs[2]);
+ err |= __get_user(regs->d3, &gregs[3]);
+ err |= __get_user(regs->d4, &gregs[4]);
+ err |= __get_user(regs->d5, &gregs[5]);
+ err |= __get_user(sw->d6, &gregs[6]);
+ err |= __get_user(sw->d7, &gregs[7]);
+ err |= __get_user(regs->a0, &gregs[8]);
+ err |= __get_user(regs->a1, &gregs[9]);
+ err |= __get_user(regs->a2, &gregs[10]);
+ err |= __get_user(sw->a3, &gregs[11]);
+ err |= __get_user(sw->a4, &gregs[12]);
+ err |= __get_user(sw->a5, &gregs[13]);
+ err |= __get_user(sw->a6, &gregs[14]);
+ err |= __get_user(usp, &gregs[15]);
+ wrusp(usp);
+ err |= __get_user(regs->pc, &gregs[16]);
+ err |= __get_user(temp, &gregs[17]);
+ regs->sr = (regs->sr & 0xff00) | (temp & 0xff);
+ regs->orig_d0 = -1; /* disable syscall checks */
+ err |= __get_user(temp, &uc->uc_formatvec);
+ regs->format = temp >> 12;
+ regs->vector = temp & 0xfff;
+
+#ifdef CONFIG_FPU
+ err |= rt_restore_fpu_state(uc);
+#endif
+
+ if (do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT)
+ goto badframe;
+
+ fsize = frame_extra_sizes[regs->format];
+ if (fsize < 0) {
+ /*
+ * user process trying to return with weird frame format
+ */
+#ifdef DEBUG
+ printk(KERN_DEBUG "user process returning with weird \
+ frame format\n");
+#endif
+ goto badframe;
+ }
+
+ /* OK. Make room on the supervisor stack for the extra junk,
+ * if necessary.
+ */
+
+ {
+#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
+ __asm__ __volatile__
+ (" movel %0,%/sp\n\t"
+ " bra ret_from_signal\n"
+ "4:\n"
+ ".section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,4b\n"
+ ".previous"
+ : /* no outputs, it doesn't ever return */
+ : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
+ "n" (frame_offset), "a" (&uc->uc_extra)
+ : "a0");
+#undef frame_offset
+ /*
+ * If we ever get here an exception occurred while
+ * building the above stack-frame.
+ */
+ goto badframe;
+ }
+
+ *pd0 = regs->d0;
+ return err;
+
+badframe:
+ return 1;
+}
+
+asmlinkage int do_sigreturn(unsigned long __unused)
+{
+ struct switch_stack *sw = (struct switch_stack *) &__unused;
+ struct pt_regs *regs = (struct pt_regs *) (sw + 1);
+ unsigned long usp = rdusp();
+ struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
+ sigset_t set;
+ int d0;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+ if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
+ (_NSIG_WORDS > 1 &&
+ __copy_from_user(&set.sig[1], &frame->extramask,
+ sizeof(frame->extramask))))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(&current->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ if (restore_sigcontext(regs, &frame->sc, frame + 1, &d0))
+ goto badframe;
+ return d0;
+
+badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+asmlinkage int do_rt_sigreturn(unsigned long __unused)
+{
+ struct switch_stack *sw = (struct switch_stack *) &__unused;
+ struct pt_regs *regs = (struct pt_regs *) (sw + 1);
+ unsigned long usp = rdusp();
+ struct rt_sigframe __user *frame =
+ (struct rt_sigframe __user *)(usp - 4);
+ sigset_t set;
+ int d0;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+ if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(&current->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ if (rt_restore_ucontext(regs, sw, &frame->uc, &d0))
+ goto badframe;
+ return d0;
+
+badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+#ifdef CONFIG_FPU
+/*
+ * Set up a signal frame.
+ */
+
+static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
+{
+ if (FPU_IS_EMU) {
+ /* save registers */
+ memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12);
+ memcpy(sc->sc_fpregs, current->thread.fp, 24);
+ return;
+ }
+}
+
+static inline int rt_save_fpu_state(struct ucontext __user *uc,
+ struct pt_regs *regs)
+{
+ int err = 0;
+
+ if (FPU_IS_EMU) {
+ /* save fpu control register */
+ err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl,
+ current->thread.fpcntl, 12);
+ /* save all other fpu register */
+ err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs,
+ current->thread.fp, 96);
+ return err;
+ }
+
+ return err;
+}
+#endif
+
+static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
+ unsigned long mask)
+{
+ sc->sc_mask = mask;
+ sc->sc_usp = rdusp();
+ sc->sc_d0 = regs->d0;
+ sc->sc_d1 = regs->d1;
+ sc->sc_a0 = regs->a0;
+ sc->sc_a1 = regs->a1;
+ sc->sc_sr = regs->sr;
+ sc->sc_pc = regs->pc;
+ sc->sc_formatvec = regs->format << 12 | regs->vector;
+#ifdef CONFIG_FPU
+ save_fpu_state(sc, regs);
+#endif
+}
+
+static inline int rt_setup_ucontext(struct ucontext __user *uc,
+ struct pt_regs *regs)
+{
+ struct switch_stack *sw = (struct switch_stack *)regs - 1;
+ greg_t __user *gregs = uc->uc_mcontext.gregs;
+ int err = 0;
+
+ err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version);
+ err |= __put_user(regs->d0, &gregs[0]);
+ err |= __put_user(regs->d1, &gregs[1]);
+ err |= __put_user(regs->d2, &gregs[2]);
+ err |= __put_user(regs->d3, &gregs[3]);
+ err |= __put_user(regs->d4, &gregs[4]);
+ err |= __put_user(regs->d5, &gregs[5]);
+ err |= __put_user(sw->d6, &gregs[6]);
+ err |= __put_user(sw->d7, &gregs[7]);
+ err |= __put_user(regs->a0, &gregs[8]);
+ err |= __put_user(regs->a1, &gregs[9]);
+ err |= __put_user(regs->a2, &gregs[10]);
+ err |= __put_user(sw->a3, &gregs[11]);
+ err |= __put_user(sw->a4, &gregs[12]);
+ err |= __put_user(sw->a5, &gregs[13]);
+ err |= __put_user(sw->a6, &gregs[14]);
+ err |= __put_user(rdusp(), &gregs[15]);
+ err |= __put_user(regs->pc, &gregs[16]);
+ err |= __put_user(regs->sr, &gregs[17]);
+ err |= __put_user((regs->format << 12) | regs->vector,
+ &uc->uc_formatvec);
+#ifdef CONFIG_FPU
+ err |= rt_save_fpu_state(uc, regs);
+#endif
+ return err;
+}
+
+extern void IcacheInvalidateCacheBlock(void *, unsigned long);
+static inline void push_cache(unsigned long vaddr)
+{
+ IcacheInvalidateCacheBlock((void *)vaddr, 8);
+}
+
+static inline void __user *
+get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+{
+ unsigned long usp;
+
+ /* Default to using normal stack. */
+ usp = rdusp();
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (ka->sa.sa_flags & SA_ONSTACK) {
+ if (!sas_ss_flags(usp))
+ usp = current->sas_ss_sp + current->sas_ss_size;
+ }
+ return (void __user *)((usp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct k_sigaction *ka,
+ sigset_t *set, struct pt_regs *regs)
+{
+ struct sigframe __user *frame;
+ int fsize = frame_extra_sizes[regs->format];
+ struct sigcontext context;
+ int err = 0;
+
+ if (fsize < 0) {
+#ifdef DEBUG
+ printk(KERN_DEBUG "setup_frame: Unknown frame format %#x\n",
+ regs->format);
+#endif
+ goto give_sigsegv;
+ }
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ err |= __put_user((current_thread_info()->exec_domain
+ && current_thread_info()->exec_domain->signal_invmap
+ && sig < 32
+ ? current_thread_info()->exec_domain->signal_invmap[sig]
+ : sig),
+ &frame->sig);
+
+ err |= __put_user(regs->vector, &frame->code);
+ err |= __put_user(&frame->sc, &frame->psc);
+
+ if (_NSIG_WORDS > 1)
+ err |= copy_to_user(frame->extramask, &set->sig[1],
+ sizeof(frame->extramask));
+
+ setup_sigcontext(&context, regs, set->sig[0]);
+ err |= copy_to_user(&frame->sc, &context, sizeof(context));
+
+ /* Set up to return from userspace. */
+ err |= __put_user(frame->retcode, &frame->pretcode);
+ /* moveq #,d0; trap #0 */
+ err |= __put_user(0x70004e40 + (__NR_sigreturn << 16),
+ (long __user *)(frame->retcode));
+
+ if (err)
+ goto give_sigsegv;
+
+ push_cache((unsigned long) &frame->retcode);
+
+ /* Set up registers for signal handler */
+ wrusp((unsigned long) frame);
+ regs->pc = (unsigned long) ka->sa.sa_handler;
+
+adjust_stack:
+ /* Prepare to skip over the extra stuff in the exception frame. */
+ if (regs->stkadj) {
+ struct pt_regs *tregs =
+ (struct pt_regs *)((ulong)regs + regs->stkadj);
+#ifdef DEBUG
+ printk(KERN_DEBUG "Performing stackadjust=%04x\n",
+ regs->stkadj);
+#endif
+ /* This must be copied with decreasing addresses to
+ handle overlaps. */
+ tregs->vector = 0;
+ tregs->format = 0;
+ tregs->pc = regs->pc;
+ tregs->sr = regs->sr;
+ }
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig, current);
+ goto adjust_stack;
+}
+
+static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ struct rt_sigframe __user *frame;
+ int fsize = frame_extra_sizes[regs->format];
+ int err = 0;
+
+ if (fsize < 0) {
+#ifdef DEBUG
+ printk(KERN_DEBUG "setup_frame: Unknown frame format %#x\n",
+ regs->format);
+#endif
+ goto give_sigsegv;
+ }
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (fsize) {
+ err |= copy_to_user(&frame->uc.uc_extra, regs + 1, fsize);
+ regs->stkadj = fsize;
+ }
+
+ err |= __put_user((current_thread_info()->exec_domain
+ && current_thread_info()->exec_domain->signal_invmap
+ && sig < 32
+ ? current_thread_info()->exec_domain->signal_invmap[sig]
+ : sig),
+ &frame->sig);
+ err |= __put_user(&frame->info, &frame->pinfo);
+ err |= __put_user(&frame->uc, &frame->puc);
+ err |= copy_siginfo_to_user(&frame->info, info);
+
+ /* Create the ucontext. */
+ err |= __put_user(0, &frame->uc.uc_flags);
+ err |= __put_user(NULL, &frame->uc.uc_link);
+ err |= __put_user((void __user *)current->sas_ss_sp,
+ &frame->uc.uc_stack.ss_sp);
+ err |= __put_user(sas_ss_flags(rdusp()),
+ &frame->uc.uc_stack.ss_flags);
+ err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= rt_setup_ucontext(&frame->uc, regs);
+ err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
+ /* Set up to return from userspace. */
+ err |= __put_user(frame->retcode, &frame->pretcode);
+
+ /* moveq #,d0; andi.l #,D0; trap #0 */
+ err |= __put_user(0x70AD0280, (long *)(frame->retcode + 0));
+ err |= __put_user(0x000000ff, (long *)(frame->retcode + 4));
+ err |= __put_user(0x4e400000, (long *)(frame->retcode + 8));
+
+ if (err)
+ goto give_sigsegv;
+
+ push_cache((unsigned long) &frame->retcode);
+
+ /* Set up registers for signal handler */
+ wrusp((unsigned long) frame);
+ regs->pc = (unsigned long) ka->sa.sa_handler;
+
+adjust_stack:
+ /* Prepare to skip over the extra stuff in the exception frame. */
+ if (regs->stkadj) {
+ struct pt_regs *tregs =
+ (struct pt_regs *)((ulong)regs + regs->stkadj);
+#ifdef DEBUG
+ printk(KERN_DEBUG "Performing stackadjust=%04x\n",
+ regs->stkadj);
+#endif
+ /* This must be copied with decreasing addresses to
+ handle overlaps. */
+ tregs->vector = 0;
+ tregs->format = 0;
+ tregs->pc = regs->pc;
+ tregs->sr = regs->sr;
+ }
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig, current);
+ goto adjust_stack;
+}
+
+static inline void
+handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
+{
+ switch (regs->d0) {
+ case -ERESTARTNOHAND:
+ if (!has_handler)
+ goto do_restart;
+ regs->d0 = -EINTR;
+ break;
+
+ case -ERESTARTSYS:
+ if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) {
+ regs->d0 = -EINTR;
+ break;
+ }
+ /* fallthrough */
+ case -ERESTARTNOINTR:
+do_restart:
+ regs->d0 = regs->orig_d0;
+ regs->pc -= 2;
+ break;
+ }
+}
+
+/*
+ * OK, we're invoking a handler
+ */
+static void
+handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *oldset, struct pt_regs *regs)
+{
+ /* are we from a system call? */
+ if (regs->orig_d0 >= 0)
+ /* If so, check system call restarting.. */
+ handle_restart(regs, ka, 1);
+
+ /* set up the stack frame */
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ setup_rt_frame(sig, ka, info, oldset, regs);
+ else
+ setup_frame(sig, ka, oldset, regs);
+
+ if (ka->sa.sa_flags & SA_ONESHOT)
+ ka->sa.sa_handler = SIG_DFL;
+
+ spin_lock_irq(&current->sighand->siglock);
+ sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
+ sigaddset(&current->blocked, sig);
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs)
+{
+ siginfo_t info;
+ struct k_sigaction ka;
+ int signr;
+
+ current->thread.esp0 = (unsigned long) regs;
+
+ if (!oldset)
+ oldset = &current->blocked;
+
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ if (signr > 0) {
+ /* Whee! Actually deliver the signal. */
+ handle_signal(signr, &ka, &info, oldset, regs);
+ return 1;
+ }
+
+ /* Did we come from a system call? */
+ if (regs->orig_d0 >= 0)
+ /* Restart the system call - no handlers present */
+ handle_restart(regs, NULL, 0);
+
+ return 0;
+}
--- /dev/null
+++ b/arch/m68k/coldfire/traps.c
@@ -0,0 +1,454 @@
+/*
+ * linux/arch/m68knommu/kernel/traps.c
+ *
+ * Copyright (C) 1993, 1994 by Hamish Macdonald
+ *
+ * 68040 fixes by Michael Rausch
+ * 68040 fixes by Martin Apel
+ * 68060 fixes by Roman Hodek
+ * 68060 fixes by Jesper Skov
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+/*
+ * Sets up all exception vectors
+ */
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/a.out.h>
+#include <linux/user.h>
+#include <linux/string.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/ptrace.h>
+#include <linux/kallsyms.h>
+
+#include <asm/setup.h>
+#include <asm/fpu.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/traps.h>
+#include <asm/pgtable.h>
+#include <asm/machdep.h>
+#include <asm/siginfo.h>
+
+static char const * const vec_names[] = {
+ "RESET SP", "RESET PC", "BUS ERROR", "ADDRESS ERROR",
+ "ILLEGAL INSTRUCTION", "ZERO DIVIDE", "CHK", "TRAPcc",
+ "PRIVILEGE VIOLATION", "TRACE", "LINE 1010", "LINE 1111",
+ "UNASSIGNED RESERVED 12", "COPROCESSOR PROTOCOL VIOLATION",
+ "FORMAT ERROR", "UNINITIALIZED INTERRUPT",
+ "UNASSIGNED RESERVED 16", "UNASSIGNED RESERVED 17",
+ "UNASSIGNED RESERVED 18", "UNASSIGNED RESERVED 19",
+ "UNASSIGNED RESERVED 20", "UNASSIGNED RESERVED 21",
+ "UNASSIGNED RESERVED 22", "UNASSIGNED RESERVED 23",
+ "SPURIOUS INTERRUPT", "LEVEL 1 INT", "LEVEL 2 INT", "LEVEL 3 INT",
+ "LEVEL 4 INT", "LEVEL 5 INT", "LEVEL 6 INT", "LEVEL 7 INT",
+ "SYSCALL", "TRAP #1", "TRAP #2", "TRAP #3",
+ "TRAP #4", "TRAP #5", "TRAP #6", "TRAP #7",
+ "TRAP #8", "TRAP #9", "TRAP #10", "TRAP #11",
+ "TRAP #12", "TRAP #13", "TRAP #14", "TRAP #15",
+ "FPCP BSUN", "FPCP INEXACT", "FPCP DIV BY 0", "FPCP UNDERFLOW",
+ "FPCP OPERAND ERROR", "FPCP OVERFLOW", "FPCP SNAN",
+ "FPCP UNSUPPORTED OPERATION",
+ "MMU CONFIGURATION ERROR"
+};
+
+asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address,
+ unsigned long error_code);
+asmlinkage void trap_c(struct frame *fp);
+extern void __init coldfire_trap_init(void);
+
+void __init trap_init(void)
+{
+ coldfire_trap_init();
+}
+
+/* The following table converts the FS encoding of a ColdFire
+ exception stack frame into the error_code value needed by
+ do_fault. */
+
+static const unsigned char fs_err_code[] = {
+ 0, /* 0000 */
+ 0, /* 0001 */
+ 0, /* 0010 */
+ 0, /* 0011 */
+ 1, /* 0100 */
+ 0, /* 0101 */
+ 0, /* 0110 */
+ 0, /* 0111 */
+ 2, /* 1000 */
+ 3, /* 1001 */
+ 2, /* 1010 */
+ 0, /* 1011 */
+ 1, /* 1100 */
+ 1, /* 1101 */
+ 0, /* 1110 */
+ 0 /* 1111 */
+};
+
+#ifdef DEBUG
+static const char *fs_err_msg[16] = {
+ "Normal",
+ "Reserved",
+ "Interrupt during debug service routine",
+ "Reserved",
+ "X Protection",
+ "TLB X miss (opword)",
+ "TLB X miss (ext. word)",
+ "IFP in emulator mode",
+ "W Protection",
+ "Write error",
+ "TLB W miss",
+ "Reserved",
+ "R Protection",
+ "R/RMW Protection",
+ "TLB R miss",
+ "OEP in emulator mode",
+};
+#endif
+
+static inline void access_errorCF(struct frame *fp)
+{
+ unsigned long int mmusr, complainingAddress;
+ unsigned int err_code, fs;
+ int need_page_fault;
+
+ mmusr = fp->ptregs.mmusr;
+ complainingAddress = fp->ptregs.mmuar;
+#ifdef DEBUG
+ printk(KERN_DEBUG "pc %#lx, mmusr %#lx, complainingAddress %#lx\n", \
+ fp->ptregs.pc, mmusr, complainingAddress);
+#endif
+
+ /*
+ * error_code:
+ * bit 0 == 0 means no page found, 1 means protection fault
+ * bit 1 == 0 means read, 1 means write
+ */
+
+ fs = (fp->ptregs.fs2 << 2) | fp->ptregs.fs1;
+ switch (fs) {
+ case 5: /* 0101 TLB opword X miss */
+ need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 0);
+ complainingAddress = fp->ptregs.pc;
+ break;
+ case 6: /* 0110 TLB extension word X miss */
+ need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 1);
+ complainingAddress = fp->ptregs.pc + sizeof(long);
+ break;
+ case 10: /* 1010 TLB W miss */
+ need_page_fault = cf_tlb_miss(&fp->ptregs, 1, 1, 0);
+ break;
+ case 14: /* 1110 TLB R miss */
+ need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 1, 0);
+ break;
+ default:
+ /* 0000 Normal */
+ /* 0001 Reserved */
+ /* 0010 Interrupt during debug service routine */
+ /* 0011 Reserved */
+ /* 0100 X Protection */
+ /* 0111 IFP in emulator mode */
+ /* 1000 W Protection*/
+ /* 1001 Write error*/
+ /* 1011 Reserved*/
+ /* 1100 R Protection*/
+ /* 1101 R Protection*/
+ /* 1111 OEP in emulator mode*/
+ need_page_fault = 1;
+ break;
+ }
+
+ if (need_page_fault) {
+ err_code = fs_err_code[fs];
+ if ((fs == 13) && (mmusr & MMUSR_WF)) /* rd-mod-wr access */
+ err_code |= 2; /* bit1 - write, bit0 - protection */
+ do_page_fault(&fp->ptregs, complainingAddress, err_code);
+ }
+}
+
+void die_if_kernel(char *str, struct pt_regs *fp, int nr)
+{
+ if (!(fp->sr & PS_S))
+ return;
+
+ console_verbose();
+ printk(KERN_EMERG "%s: %08x\n", str, nr);
+ printk(KERN_EMERG "PC: [<%08lx>]", fp->pc);
+ print_symbol(" %s", fp->pc);
+ printk(KERN_EMERG "\nSR: %04x SP: %p a2: %08lx\n",
+ fp->sr, fp, fp->a2);
+ printk(KERN_EMERG "d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n",
+ fp->d0, fp->d1, fp->d2, fp->d3);
+ printk(KERN_EMERG "d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n",
+ fp->d4, fp->d5, fp->a0, fp->a1);
+
+ printk(KERN_EMERG "Process %s (pid: %d, stackpage=%08lx)\n",
+ current->comm, current->pid, PAGE_SIZE+(unsigned long)current);
+ show_stack(NULL, (unsigned long *)fp);
+ do_exit(SIGSEGV);
+}
+
+asmlinkage void buserr_c(struct frame *fp)
+{
+ unsigned int fs;
+
+ /* Only set esp0 if coming from user mode */
+ if (user_mode(&fp->ptregs))
+ current->thread.esp0 = (unsigned long) fp;
+
+ fs = (fp->ptregs.fs2 << 2) | fp->ptregs.fs1;
+#if defined(DEBUG)
+ printk(KERN_DEBUG "*** Bus Error *** (%x)%s\n", fs,
+ fs_err_msg[fs & 0xf]);
+#endif
+ switch (fs) {
+ case 0x5:
+ case 0x6:
+ case 0x7:
+ case 0x9:
+ case 0xa:
+ case 0xd:
+ case 0xe:
+ case 0xf:
+ access_errorCF(fp);
+ break;
+ default:
+ die_if_kernel("bad frame format", &fp->ptregs, 0);
+#if defined(DEBUG)
+ printk(KERN_DEBUG "Unknown SIGSEGV - 4\n");
+#endif
+ force_sig(SIGSEGV, current);
+ }
+}
+
+
+int kstack_depth_to_print = 48;
+
+void show_stack(struct task_struct *task, unsigned long *stack)
+{
+ unsigned long *endstack, addr, symaddr;
+ extern char _start, _etext;
+ int i;
+
+ if (!stack) {
+ if (task)
+ stack = (unsigned long *)task->thread.ksp;
+ else
+ stack = (unsigned long *)&stack;
+ }
+
+ addr = (unsigned long) stack;
+ endstack = (unsigned long *) PAGE_ALIGN(addr);
+
+ printk(KERN_EMERG "Stack from %08lx:", (unsigned long)stack);
+ for (i = 0; i < kstack_depth_to_print; i++) {
+ if (stack + 1 > endstack)
+ break;
+ if (i % 8 == 0)
+ printk("\n" KERN_EMERG " ");
+ symaddr = *stack;
+ printk(KERN_EMERG " %08lx", *stack++);
+ if ((symaddr >= 0xc0000000) && (symaddr < 0xc1000000))
+ print_symbol("(%s)", symaddr);
+ }
+ printk("\n");
+
+ printk(KERN_EMERG "Call Trace:");
+ i = 0;
+ while (stack + 1 <= endstack) {
+ addr = *stack++;
+ /*
+ * If the address is either in the text segment of the
+ * kernel, or in the region which contains vmalloc'ed
+ * memory, it *may* be the address of a calling
+ * routine; if so, print it so that someone tracing
+ * down the cause of the crash will be able to figure
+ * out the call path that was taken.
+ */
+ if (((addr >= (unsigned long) &_start) &&
+ (addr <= (unsigned long) &_etext))) {
+ if (i % 4 == 0)
+ printk("\n" KERN_EMERG " ");
+ printk(KERN_EMERG " [<%08lx>]", addr);
+ i++;
+ }
+ }
+ printk("\n");
+}
+
+void bad_super_trap(struct frame *fp)
+{
+ console_verbose();
+ if (fp->ptregs.vector < 4*sizeof(vec_names)/sizeof(vec_names[0]))
+ printk(KERN_WARNING "*** %s *** FORMAT=%X\n",
+ vec_names[(fp->ptregs.vector) >> 2],
+ fp->ptregs.format);
+ else
+ printk(KERN_WARNING "*** Exception %d *** FORMAT=%X\n",
+ (fp->ptregs.vector) >> 2,
+ fp->ptregs.format);
+ printk(KERN_WARNING "Current process id is %d\n", current->pid);
+ die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0);
+}
+
+asmlinkage void trap_c(struct frame *fp)
+{
+ int sig;
+ siginfo_t info;
+
+ if (fp->ptregs.sr & PS_S) {
+ if ((fp->ptregs.vector >> 2) == VEC_TRACE) {
+ /* traced a trapping instruction */
+ current->ptrace |= PT_DTRACE;
+ } else
+ bad_super_trap(fp);
+ return;
+ }
+
+ /* send the appropriate signal to the user program */
+ switch ((fp->ptregs.vector) >> 2) {
+ case VEC_ADDRERR:
+ info.si_code = BUS_ADRALN;
+ sig = SIGBUS;
+ break;
+ case VEC_ILLEGAL:
+ case VEC_LINE10:
+ case VEC_LINE11:
+ info.si_code = ILL_ILLOPC;
+ sig = SIGILL;
+ break;
+ case VEC_PRIV:
+ info.si_code = ILL_PRVOPC;
+ sig = SIGILL;
+ break;
+ case VEC_COPROC:
+ info.si_code = ILL_COPROC;
+ sig = SIGILL;
+ break;
+ case VEC_TRAP1: /* gdbserver breakpoint */
+ fp->ptregs.pc -= 2;
+ info.si_code = TRAP_TRACE;
+ sig = SIGTRAP;
+ break;
+ case VEC_TRAP2:
+ case VEC_TRAP3:
+ case VEC_TRAP4:
+ case VEC_TRAP5:
+ case VEC_TRAP6:
+ case VEC_TRAP7:
+ case VEC_TRAP8:
+ case VEC_TRAP9:
+ case VEC_TRAP10:
+ case VEC_TRAP11:
+ case VEC_TRAP12:
+ case VEC_TRAP13:
+ case VEC_TRAP14:
+ info.si_code = ILL_ILLTRP;
+ sig = SIGILL;
+ break;
+ case VEC_FPBRUC:
+ case VEC_FPOE:
+ case VEC_FPNAN:
+ info.si_code = FPE_FLTINV;
+ sig = SIGFPE;
+ break;
+ case VEC_FPIR:
+ info.si_code = FPE_FLTRES;
+ sig = SIGFPE;
+ break;
+ case VEC_FPDIVZ:
+ info.si_code = FPE_FLTDIV;
+ sig = SIGFPE;
+ break;
+ case VEC_FPUNDER:
+ info.si_code = FPE_FLTUND;
+ sig = SIGFPE;
+ break;
+ case VEC_FPOVER:
+ info.si_code = FPE_FLTOVF;
+ sig = SIGFPE;
+ break;
+ case VEC_ZERODIV:
+ info.si_code = FPE_INTDIV;
+ sig = SIGFPE;
+ break;
+ case VEC_CHK:
+ case VEC_TRAP:
+ info.si_code = FPE_INTOVF;
+ sig = SIGFPE;
+ break;
+ case VEC_TRACE: /* ptrace single step */
+ info.si_code = TRAP_TRACE;
+ sig = SIGTRAP;
+ break;
+ case VEC_TRAP15: /* breakpoint */
+ info.si_code = TRAP_BRKPT;
+ sig = SIGTRAP;
+ break;
+ default:
+ info.si_code = ILL_ILLOPC;
+ sig = SIGILL;
+ break;
+ }
+ info.si_signo = sig;
+ info.si_errno = 0;
+ switch (fp->ptregs.format) {
+ default:
+ info.si_addr = (void *) fp->ptregs.pc;
+ break;
+ case 2:
+ info.si_addr = (void *) fp->un.fmt2.iaddr;
+ break;
+ case 7:
+ info.si_addr = (void *) fp->un.fmt7.effaddr;
+ break;
+ case 9:
+ info.si_addr = (void *) fp->un.fmt9.iaddr;
+ break;
+ case 10:
+ info.si_addr = (void *) fp->un.fmta.daddr;
+ break;
+ case 11:
+ info.si_addr = (void *) fp->un.fmtb.daddr;
+ break;
+ }
+ force_sig_info(sig, &info, current);
+}
+
+asmlinkage void set_esp0(unsigned long ssp)
+{
+ current->thread.esp0 = ssp;
+}
+
+/*
+ * The architecture-independent backtrace generator
+ */
+void dump_stack(void)
+{
+ unsigned long stack;
+
+ show_stack(current, &stack);
+}
+EXPORT_SYMBOL(dump_stack);
+
+#ifdef CONFIG_M68KFPU_EMU
+asmlinkage void fpemu_signal(int signal, int code, void *addr)
+{
+ siginfo_t info;
+
+ info.si_signo = signal;
+ info.si_errno = 0;
+ info.si_code = code;
+ info.si_addr = addr;
+ force_sig_info(signal, &info, current);
+}
+#endif
--- /dev/null
+++ b/arch/m68k/coldfire/vmlinux-cf.lds
@@ -0,0 +1,92 @@
+/* ld script to make m68k Coldfire Linux kernel */
+
+#include <asm-generic/vmlinux.lds.h>
+
+OUTPUT_FORMAT("elf32-m68k", "elf32-m68k", "elf32-m68k")
+OUTPUT_ARCH(m68k)
+ENTRY(_start)
+jiffies = jiffies_64 + 4;
+SECTIONS
+{
+ . = 0xC0020000;
+ _text = .; /* Text and read-only data */
+ .text : {
+ *(.text.head)
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ *(.fixup)
+ *(.gnu.warning)
+ } :text = 0x4e75
+
+ _etext = .; /* End of text section */
+
+ . = ALIGN(16);
+ __start___ex_table = .;
+ __ex_table : { *(__ex_table) }
+ __stop___ex_table = .;
+
+ RODATA
+
+ .data : { /* Data */
+ DATA_DATA
+ CONSTRUCTORS
+ }
+
+ .bss : { *(.bss) } /* BSS */
+
+ . = ALIGN(16);
+ .data.cacheline_aligned : { *(.data.cacheline_aligned) } :data
+
+ _edata = .; /* End of data section */
+
+ . = ALIGN(8192); /* Initrd */
+ __init_begin = .;
+ .init.text : {
+ _sinittext = .;
+ *(.init.text)
+ _einittext = .;
+ }
+ .init.data : { *(.init.data) }
+ . = ALIGN(16);
+ __setup_start = .;
+ .init.setup : { *(.init.setup) }
+ __setup_end = .;
+ __initcall_start = .;
+ .initcall.init : {
+ INITCALLS
+ }
+ __initcall_end = .;
+ __con_initcall_start = .;
+ .con_initcall.init : { *(.con_initcall.init) }
+ __con_initcall_end = .;
+ SECURITY_INIT
+#ifdef CONFIG_BLK_DEV_INITRD
+ . = ALIGN(8192);
+ __initramfs_start = .;
+ .init.ramfs : { *(.init.ramfs) }
+ __initramfs_end = .;
+#endif
+ . = ALIGN(8192);
+ __init_end = .;
+
+ .data.init_task : { *(.data.init_task) } /* The initial task and kernel stack */
+
+ _end = . ;
+
+ /* Sections to be discarded */
+ /DISCARD/ : {
+ *(.exit.text)
+ *(.exit.data)
+ *(.exitcall.exit)
+ }
+
+ /* Stabs debugging sections. */
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+}
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