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Merge branch 'for-linus' of git://github.com/gregungerer/m68knommu

Browse Source 
* 'for-linus' of git://github.com/gregungerer/m68knommu:
  m68k: drop unused Kconfig symbols
  m68k: drop unused Kconfig symbols
  m68knommu: create common externs for _ram* vars
  m68knommu: remove extern declarations of memory_start/memory_end from mm/init
  m68knommu: use generic section names in mm/init code
  m68knommu: use generic section names in setup code
  m68k: merge the mmu and non-mmu traps.c files
  m68k: move hardware vector setting from traps.c to its own file
  m68k: merge mmu and non-mmu include/asm/entry.h files
  m68k: merge the mmu and non-mmu kernel/Makefiles
  m68k: merge mmu and non-mmu arch Makefiles
  m68k: reorganize Kconfig options to improve mmu/non-mmu selections
  m68knommu: fix problems with SPI/GPIO on ColdFire 520x
  m68k: fix memcpy to unmatched/unaligned source and dest on 68000
This commit is contained in:
Linus Torvalds
2011-10-25 16:25:48 +02:00
parent 0110bba5e7 dbcbf5885a
commit 7670c7010c
35 changed files with 2600 additions and 3212 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
arch/m68k/kernel/Makefile
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@@ -1,5 +1,21 @@
ifdef CONFIG_MMU
include arch/m68k/kernel/Makefile_mm
else
include arch/m68k/kernel/Makefile_no
#
# Makefile for the linux kernel.
#
extra-$(CONFIG_MMU) := head.o
extra-$(CONFIG_SUN3) := sun3-head.o
extra-y += vmlinux.lds
obj-y := entry.o m68k_ksyms.o module.o process.o ptrace.o setup.o signal.o \
sys_m68k.o syscalltable.o time.o traps.o
obj-$(CONFIG_MMU) += ints.o devres.o vectors.o
devres-$(CONFIG_MMU) = ../../../kernel/irq/devres.o
ifndef CONFIG_MMU_SUN3
obj-y += dma.o
endif
ifndef CONFIG_MMU
obj-y += init_task.o irq.o
endif

17
arch/m68k/kernel/Makefile_mm
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@@ -1,17 +0,0 @@
#
# Makefile for the linux kernel.
#
ifndef CONFIG_SUN3
extra-y := head.o
else
extra-y := sun3-head.o
endif
extra-y += vmlinux.lds
obj-y := entry.o process.o traps.o ints.o signal.o ptrace.o module.o \
sys_m68k.o time.o setup.o m68k_ksyms.o devres.o syscalltable.o
devres-y = ../../../kernel/irq/devres.o
obj-y$(CONFIG_MMU_SUN3) += dma.o # no, it's not a typo

10
arch/m68k/kernel/Makefile_no
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@@ -1,10 +0,0 @@
#
# Makefile for arch/m68knommu/kernel.
#
extra-y := vmlinux.lds
obj-y += dma.o entry.o init_task.o irq.o m68k_ksyms.o process.o ptrace.o \
setup.o signal.o syscalltable.o sys_m68k.o time.o traps.o
obj-$(CONFIG_MODULES) += module.o

6
arch/m68k/kernel/entry_no.S
View File

@@ -43,7 +43,7 @@
.globl sys_vfork
ENTRY(buserr)
SAVE_ALL
SAVE_ALL_INT
moveq #-1,%d0
movel %d0,%sp@(PT_OFF_ORIG_D0)
movel %sp,%sp@- /* stack frame pointer argument */
@@ -52,7 +52,7 @@ ENTRY(buserr)
jra ret_from_exception
ENTRY(trap)
SAVE_ALL
SAVE_ALL_INT
moveq #-1,%d0
movel %d0,%sp@(PT_OFF_ORIG_D0)
movel %sp,%sp@- /* stack frame pointer argument */
@@ -64,7 +64,7 @@ ENTRY(trap)
.globl dbginterrupt
ENTRY(dbginterrupt)
SAVE_ALL
SAVE_ALL_INT
moveq #-1,%d0
movel %d0,%sp@(PT_OFF_ORIG_D0)
movel %sp,%sp@- /* stack frame pointer argument */

4
arch/m68k/kernel/setup_no.c
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@@ -36,6 +36,7 @@
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/pgtable.h>
#include <asm/sections.h>
unsigned long memory_start;
unsigned long memory_end;
@@ -80,9 +81,6 @@ void (*mach_power_off)(void);
#define CPU_INSTR_PER_JIFFY 16
#endif
extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
extern int _ramstart, _ramend;
#if defined(CONFIG_UBOOT)
/*
* parse_uboot_commandline

1108
arch/m68k/kernel/traps.c
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File diff suppressed because it is too large Load Diff

1207
arch/m68k/kernel/traps_mm.c
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File diff suppressed because it is too large Load Diff

361
arch/m68k/kernel/traps_no.c
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@@ -1,361 +0,0 @@
/*
* 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/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"
};
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>]\nSR: %04x SP: %p a2: %08lx\n",
fp->pc, 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 + 1));
add_taint(TAINT_DIE);
do_exit(SIGSEGV);
}
asmlinkage void buserr_c(struct frame *fp)
{
/* Only set esp0 if coming from user mode */
if (user_mode(&fp->ptregs))
current->thread.esp0 = (unsigned long) fp;
#if defined(DEBUG)
printk (KERN_DEBUG "*** Bus Error *** Format is %x\n", fp->ptregs.format);
#endif
die_if_kernel("bad frame format",&fp->ptregs,0);
#if defined(DEBUG)
printk(KERN_DEBUG "Unknown SIGSEGV - 4\n");
#endif
force_sig(SIGSEGV, current);
}
static void print_this_address(unsigned long addr, int i)
{
#ifdef CONFIG_KALLSYMS
printk(KERN_EMERG " [%08lx] ", addr);
print_symbol(KERN_CONT "%s\n", addr);
#else
if (i % 5)
printk(KERN_CONT " [%08lx] ", addr);
else
printk(KERN_EMERG " [%08lx] ", addr);
i++;
#endif
}
int kstack_depth_to_print = 48;
static void __show_stack(struct task_struct *task, unsigned long *stack)
{
unsigned long *endstack, addr;
#ifdef CONFIG_FRAME_POINTER
unsigned long *last_stack;
#endif
int i;
if (!stack)
stack = (unsigned long *)task->thread.ksp;
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 + i > endstack)
break;
if (i % 8 == 0)
printk(KERN_EMERG " ");
printk(KERN_CONT " %08lx", *(stack + i));
}
printk("\n");
i = 0;
#ifdef CONFIG_FRAME_POINTER
printk(KERN_EMERG "Call Trace:\n");
last_stack = stack - 1;
while (stack <= endstack && stack > last_stack) {
addr = *(stack + 1);
print_this_address(addr, i);
i++;
last_stack = stack;
stack = (unsigned long *)*stack;
}
printk("\n");
#else
printk(KERN_EMERG "Call Trace with CONFIG_FRAME_POINTER disabled:\n");
while (stack <= endstack) {
addr = *stack++;
/*
* If the address is either in the text segment of the kernel,
* or in a region which is occupied by a module then 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 (__kernel_text_address(addr)) {
print_this_address(addr, i);
i++;
}
}
printk(KERN_CONT "\n");
#endif
}
void bad_super_trap(struct frame *fp)
{
int vector = (fp->ptregs.vector >> 2) & 0xff;
console_verbose();
if (vector < ARRAY_SIZE(vec_names))
printk (KERN_WARNING "*** %s *** FORMAT=%X\n",
vec_names[vector],
fp->ptregs.format);
else
printk (KERN_WARNING "*** Exception %d *** FORMAT=%X\n",
vector,
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;
int vector = (fp->ptregs.vector >> 2) & 0xff;
siginfo_t info;
if (fp->ptregs.sr & PS_S) {
if (vector == VEC_TRACE) {
/* traced a trapping instruction */
} else
bad_super_trap(fp);
return;
}
/* send the appropriate signal to the user program */
switch (vector) {
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)
{
/*
* We need frame pointers for this little trick, which works as follows:
*
* +------------+ 0x00
* | Next SP | -> 0x0c
* +------------+ 0x04
* | Caller |
* +------------+ 0x08
* | Local vars | -> our stack var
* +------------+ 0x0c
* | Next SP | -> 0x18, that is what we pass to show_stack()
* +------------+ 0x10
* | Caller |
* +------------+ 0x14
* | Local vars |
* +------------+ 0x18
* | ... |
* +------------+
*/
unsigned long *stack;
stack = (unsigned long *)&stack;
stack++;
__show_stack(current, stack);
}
EXPORT_SYMBOL(dump_stack);
void show_stack(struct task_struct *task, unsigned long *stack)
{
if (!stack && !task)
dump_stack();
else
__show_stack(task, stack);
}

145
arch/m68k/kernel/vectors.c Normal file
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@@ -0,0 +1,145 @@
/*
* vectors.c
*
* Copyright (C) 1993, 1994 by Hamish Macdonald
*
* 68040 fixes by Michael Rausch
* 68040 fixes by Martin Apel
* 68040 fixes and writeback by Richard Zidlicky
* 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/kernel.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/kallsyms.h>
#include <asm/setup.h>
#include <asm/fpu.h>
#include <asm/system.h>
#include <asm/traps.h>
/* assembler routines */
asmlinkage void system_call(void);
asmlinkage void buserr(void);
asmlinkage void trap(void);
asmlinkage void nmihandler(void);
#ifdef CONFIG_M68KFPU_EMU
asmlinkage void fpu_emu(void);
#endif
e_vector vectors[256];
/* nmi handler for the Amiga */
asm(".text\n"
__ALIGN_STR "\n"
"nmihandler: rte");
/*
* this must be called very early as the kernel might
* use some instruction that are emulated on the 060
* and so we're prepared for early probe attempts (e.g. nf_init).
*/
void __init base_trap_init(void)
{
if (MACH_IS_SUN3X) {
extern e_vector *sun3x_prom_vbr;
__asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
}
/* setup the exception vector table */
__asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors));
if (CPU_IS_060) {
/* set up ISP entry points */
asmlinkage void unimp_vec(void) asm ("_060_isp_unimp");
vectors[VEC_UNIMPII] = unimp_vec;
}
vectors[VEC_BUSERR] = buserr;
vectors[VEC_ILLEGAL] = trap;
vectors[VEC_SYS] = system_call;
}
void __init trap_init (void)
{
int i;
for (i = VEC_SPUR; i <= VEC_INT7; i++)
vectors[i] = bad_inthandler;
for (i = 0; i < VEC_USER; i++)
if (!vectors[i])
vectors[i] = trap;
for (i = VEC_USER; i < 256; i++)
vectors[i] = bad_inthandler;
#ifdef CONFIG_M68KFPU_EMU
if (FPU_IS_EMU)
vectors[VEC_LINE11] = fpu_emu;
#endif
if (CPU_IS_040 && !FPU_IS_EMU) {
/* set up FPSP entry points */
asmlinkage void dz_vec(void) asm ("dz");
asmlinkage void inex_vec(void) asm ("inex");
asmlinkage void ovfl_vec(void) asm ("ovfl");
asmlinkage void unfl_vec(void) asm ("unfl");
asmlinkage void snan_vec(void) asm ("snan");
asmlinkage void operr_vec(void) asm ("operr");
asmlinkage void bsun_vec(void) asm ("bsun");
asmlinkage void fline_vec(void) asm ("fline");
asmlinkage void unsupp_vec(void) asm ("unsupp");
vectors[VEC_FPDIVZ] = dz_vec;
vectors[VEC_FPIR] = inex_vec;
vectors[VEC_FPOVER] = ovfl_vec;
vectors[VEC_FPUNDER] = unfl_vec;
vectors[VEC_FPNAN] = snan_vec;
vectors[VEC_FPOE] = operr_vec;
vectors[VEC_FPBRUC] = bsun_vec;
vectors[VEC_LINE11] = fline_vec;
vectors[VEC_FPUNSUP] = unsupp_vec;
}
if (CPU_IS_060 && !FPU_IS_EMU) {
/* set up IFPSP entry points */
asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan");
asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr");
asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl");
asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl");
asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz");
asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex");
asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline");
asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp");
asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd");
vectors[VEC_FPNAN] = snan_vec6;
vectors[VEC_FPOE] = operr_vec6;
vectors[VEC_FPOVER] = ovfl_vec6;
vectors[VEC_FPUNDER] = unfl_vec6;
vectors[VEC_FPDIVZ] = dz_vec6;
vectors[VEC_FPIR] = inex_vec6;
vectors[VEC_LINE11] = fline_vec6;
vectors[VEC_FPUNSUP] = unsupp_vec6;
vectors[VEC_UNIMPEA] = effadd_vec6;
}
/* if running on an amiga, make the NMI interrupt do nothing */
if (MACH_IS_AMIGA) {
vectors[VEC_INT7] = nmihandler;
}
}