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-rw-r--r--arch/m68k/kernel/Makefile21
-rw-r--r--arch/m68k/kernel/asm-offsets.c3
-rw-r--r--arch/m68k/kernel/entry.S2
-rw-r--r--arch/m68k/kernel/entry_mm.S31
-rw-r--r--arch/m68k/kernel/entry_no.S9
-rw-r--r--arch/m68k/kernel/init_task.c3
-rw-r--r--arch/m68k/kernel/m68k_ksyms.c2
-rw-r--r--arch/m68k/kernel/process_mm.c75
-rw-r--r--arch/m68k/kernel/ptrace_mm.c18
-rw-r--r--arch/m68k/kernel/setup_mm.c22
-rw-r--r--arch/m68k/kernel/setup_no.c1
-rw-r--r--arch/m68k/kernel/signal_mm.c204
-rw-r--r--arch/m68k/kernel/time.c2
-rw-r--r--arch/m68k/kernel/time_no.c3
-rw-r--r--arch/m68k/kernel/traps.c104
-rw-r--r--arch/m68k/kernel/vmlinux-nommu.lds (renamed from arch/m68k/kernel/vmlinux.lds_no.S)8
-rw-r--r--arch/m68k/kernel/vmlinux-std.lds2
-rw-r--r--arch/m68k/kernel/vmlinux-sun3.lds2
-rw-r--r--arch/m68k/kernel/vmlinux.lds.S15
-rw-r--r--arch/m68k/kernel/vmlinux.lds_mm.S10
20 files changed, 407 insertions, 130 deletions
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index c5696193281a..40d29a788b05 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -2,19 +2,24 @@
# Makefile for the linux kernel.
#
-extra-$(CONFIG_MMU) := head.o
+extra-$(CONFIG_AMIGA) := head.o
+extra-$(CONFIG_ATARI) := head.o
+extra-$(CONFIG_MAC) := head.o
+extra-$(CONFIG_APOLLO) := head.o
+extra-$(CONFIG_VME) := head.o
+extra-$(CONFIG_HP300) := head.o
+extra-$(CONFIG_Q40) := head.o
+extra-$(CONFIG_SUN3X) := head.o
extra-$(CONFIG_SUN3) := sun3-head.o
extra-y += vmlinux.lds
-obj-y := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o setup.o \
- signal.o sys_m68k.o syscalltable.o time.o traps.o
+obj-y := entry.o init_task.o irq.o m68k_ksyms.o module.o process.o ptrace.o
+obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
-obj-$(CONFIG_MMU) += ints.o vectors.o
+obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
+obj-$(CONFIG_MMU_SUN3) += ints.o vectors.o
ifndef CONFIG_MMU_SUN3
-obj-y += dma.o
-endif
-ifndef CONFIG_MMU
-obj-y += init_task.o
+obj-y += dma.o
endif
diff --git a/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c
index 983fed9d469b..a972b00cd77d 100644
--- a/arch/m68k/kernel/asm-offsets.c
+++ b/arch/m68k/kernel/asm-offsets.c
@@ -24,8 +24,7 @@ int main(void)
/* offsets into the task struct */
DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
DEFINE(TASK_MM, offsetof(struct task_struct, mm));
- DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info));
- DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info));
+ DEFINE(TASK_STACK, offsetof(struct task_struct, stack));
/* offsets into the thread struct */
DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 081cf96f243b..b8daf64e347d 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -1,4 +1,4 @@
-#ifdef CONFIG_MMU
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
#include "entry_mm.S"
#else
#include "entry_no.S"
diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S
index c713f514843d..675a854966a6 100644
--- a/arch/m68k/kernel/entry_mm.S
+++ b/arch/m68k/kernel/entry_mm.S
@@ -99,7 +99,8 @@ do_trace_exit:
jra .Lret_from_exception
ENTRY(ret_from_signal)
- tstb %curptr@(TASK_INFO+TINFO_FLAGS+2)
+ movel %curptr@(TASK_STACK),%a1
+ tstb %a1@(TINFO_FLAGS+2)
jge 1f
jbsr syscall_trace
1: RESTORE_SWITCH_STACK
@@ -120,11 +121,13 @@ ENTRY(system_call)
SAVE_ALL_SYS
GET_CURRENT(%d1)
+ movel %d1,%a1
+
| save top of frame
movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
| syscall trace?
- tstb %curptr@(TASK_INFO+TINFO_FLAGS+2)
+ tstb %a1@(TINFO_FLAGS+2)
jmi do_trace_entry
cmpl #NR_syscalls,%d0
jcc badsys
@@ -133,7 +136,8 @@ syscall:
movel %d0,%sp@(PT_OFF_D0) | save the return value
ret_from_syscall:
|oriw #0x0700,%sr
- movew %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0
+ movel %curptr@(TASK_STACK),%a1
+ movew %a1@(TINFO_FLAGS+2),%d0
jne syscall_exit_work
1: RESTORE_ALL
@@ -159,7 +163,8 @@ ENTRY(ret_from_exception)
andw #ALLOWINT,%sr
resume_userspace:
- moveb %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0
+ movel %curptr@(TASK_STACK),%a1
+ moveb %a1@(TINFO_FLAGS+3),%d0
jne exit_work
1: RESTORE_ALL
@@ -199,7 +204,8 @@ do_delayed_trace:
ENTRY(auto_inthandler)
SAVE_ALL_INT
GET_CURRENT(%d0)
- addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+ movel %d0,%a1
+ addqb #1,%a1@(TINFO_PREEMPT+1)
| put exception # in d0
bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
subw #VEC_SPUR,%d0
@@ -211,7 +217,8 @@ auto_irqhandler_fixup = . + 2
addql #8,%sp | pop parameters off stack
ret_from_interrupt:
- subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+ movel %curptr@(TASK_STACK),%a1
+ subqb #1,%a1@(TINFO_PREEMPT+1)
jeq ret_from_last_interrupt
2: RESTORE_ALL
@@ -232,7 +239,8 @@ ret_from_last_interrupt:
ENTRY(user_inthandler)
SAVE_ALL_INT
GET_CURRENT(%d0)
- addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+ movel %d0,%a1
+ addqb #1,%a1@(TINFO_PREEMPT+1)
| put exception # in d0
bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
user_irqvec_fixup = . + 2
@@ -243,7 +251,8 @@ user_irqvec_fixup = . + 2
jsr do_IRQ | process the IRQ
addql #8,%sp | pop parameters off stack
- subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+ movel %curptr@(TASK_STACK),%a1
+ subqb #1,%a1@(TINFO_PREEMPT+1)
jeq ret_from_last_interrupt
RESTORE_ALL
@@ -252,13 +261,15 @@ user_irqvec_fixup = . + 2
ENTRY(bad_inthandler)
SAVE_ALL_INT
GET_CURRENT(%d0)
- addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+ movel %d0,%a1
+ addqb #1,%a1@(TINFO_PREEMPT+1)
movel %sp,%sp@-
jsr handle_badint
addql #4,%sp
- subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+ movel %curptr@(TASK_STACK),%a1
+ subqb #1,%a1@(TINFO_PREEMPT+1)
jeq ret_from_last_interrupt
RESTORE_ALL
diff --git a/arch/m68k/kernel/entry_no.S b/arch/m68k/kernel/entry_no.S
index 1b4289061a64..d80cba45589f 100644
--- a/arch/m68k/kernel/entry_no.S
+++ b/arch/m68k/kernel/entry_no.S
@@ -44,8 +44,7 @@
ENTRY(buserr)
SAVE_ALL_INT
- moveq #-1,%d0
- movel %d0,%sp@(PT_OFF_ORIG_D0)
+ GET_CURRENT(%d0)
movel %sp,%sp@- /* stack frame pointer argument */
jsr buserr_c
addql #4,%sp
@@ -53,8 +52,7 @@ ENTRY(buserr)
ENTRY(trap)
SAVE_ALL_INT
- moveq #-1,%d0
- movel %d0,%sp@(PT_OFF_ORIG_D0)
+ GET_CURRENT(%d0)
movel %sp,%sp@- /* stack frame pointer argument */
jsr trap_c
addql #4,%sp
@@ -65,8 +63,7 @@ ENTRY(trap)
.globl dbginterrupt
ENTRY(dbginterrupt)
SAVE_ALL_INT
- moveq #-1,%d0
- movel %d0,%sp@(PT_OFF_ORIG_D0)
+ GET_CURRENT(%d0)
movel %sp,%sp@- /* stack frame pointer argument */
jsr dbginterrupt_c
addql #4,%sp
diff --git a/arch/m68k/kernel/init_task.c b/arch/m68k/kernel/init_task.c
index cbf9dc3cc51d..c744cfc6bfa1 100644
--- a/arch/m68k/kernel/init_task.c
+++ b/arch/m68k/kernel/init_task.c
@@ -19,7 +19,6 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
*
* All other task structs will be allocated on slabs in fork.c
*/
-__asm__(".align 4");
struct task_struct init_task = INIT_TASK(init_task);
EXPORT_SYMBOL(init_task);
@@ -27,7 +26,7 @@ EXPORT_SYMBOL(init_task);
/*
* Initial thread structure.
*
- * We need to make sure that this is 8192-byte aligned due to the
+ * We need to make sure that this is THREAD size aligned due to the
* way process stacks are handled. This is done by having a special
* "init_task" linker map entry..
*/
diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c
index 1b7a14d1a000..774c1bd59c36 100644
--- a/arch/m68k/kernel/m68k_ksyms.c
+++ b/arch/m68k/kernel/m68k_ksyms.c
@@ -14,7 +14,7 @@ EXPORT_SYMBOL(__ashrdi3);
EXPORT_SYMBOL(__lshrdi3);
EXPORT_SYMBOL(__muldi3);
-#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
+#if defined(CONFIG_CPU_HAS_NO_MULDIV64)
/*
* Simpler 68k and ColdFire parts also need a few other gcc functions.
*/
diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c
index 1bc223aa07ec..125f34e00bf0 100644
--- a/arch/m68k/kernel/process_mm.c
+++ b/arch/m68k/kernel/process_mm.c
@@ -33,22 +33,6 @@
#include <asm/setup.h>
#include <asm/pgtable.h>
-/*
- * Initial task/thread structure. Make this a per-architecture thing,
- * because different architectures tend to have different
- * alignment requirements and potentially different initial
- * setup.
- */
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-union thread_union init_thread_union __init_task_data
- __attribute__((aligned(THREAD_SIZE))) =
- { INIT_THREAD_INFO(init_task) };
-
-/* initial task structure */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
asmlinkage void ret_from_fork(void);
@@ -188,9 +172,7 @@ void flush_thread(void)
current->thread.fs = __USER_DS;
if (!FPU_IS_EMU)
- asm volatile (".chip 68k/68881\n\t"
- "frestore %0@\n\t"
- ".chip 68k" : : "a" (&zero));
+ asm volatile ("frestore %0@" : : "a" (&zero) : "memory");
}
/*
@@ -264,11 +246,28 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
/* Copy the current fpu state */
asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory");
- if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2])
- asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
- "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
- : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0])
- : "memory");
+ if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) {
+ if (CPU_IS_COLDFIRE) {
+ asm volatile ("fmovemd %/fp0-%/fp7,%0\n\t"
+ "fmovel %/fpiar,%1\n\t"
+ "fmovel %/fpcr,%2\n\t"
+ "fmovel %/fpsr,%3"
+ :
+ : "m" (p->thread.fp[0]),
+ "m" (p->thread.fpcntl[0]),
+ "m" (p->thread.fpcntl[1]),
+ "m" (p->thread.fpcntl[2])
+ : "memory");
+ } else {
+ asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
+ "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
+ :
+ : "m" (p->thread.fp[0]),
+ "m" (p->thread.fpcntl[0])
+ : "memory");
+ }
+ }
+
/* Restore the state in case the fpu was busy */
asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0]));
}
@@ -301,12 +300,28 @@ int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2])
return 0;
- asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
- :: "m" (fpu->fpcntl[0])
- : "memory");
- asm volatile ("fmovemx %/fp0-%/fp7,%0"
- :: "m" (fpu->fpregs[0])
- : "memory");
+ if (CPU_IS_COLDFIRE) {
+ asm volatile ("fmovel %/fpiar,%0\n\t"
+ "fmovel %/fpcr,%1\n\t"
+ "fmovel %/fpsr,%2\n\t"
+ "fmovemd %/fp0-%/fp7,%3"
+ :
+ : "m" (fpu->fpcntl[0]),
+ "m" (fpu->fpcntl[1]),
+ "m" (fpu->fpcntl[2]),
+ "m" (fpu->fpregs[0])
+ : "memory");
+ } else {
+ asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
+ :
+ : "m" (fpu->fpcntl[0])
+ : "memory");
+ asm volatile ("fmovemx %/fp0-%/fp7,%0"
+ :
+ : "m" (fpu->fpregs[0])
+ : "memory");
+ }
+
return 1;
}
EXPORT_SYMBOL(dump_fpu);
diff --git a/arch/m68k/kernel/ptrace_mm.c b/arch/m68k/kernel/ptrace_mm.c
index 0b252683cefb..7bc999b73529 100644
--- a/arch/m68k/kernel/ptrace_mm.c
+++ b/arch/m68k/kernel/ptrace_mm.c
@@ -18,6 +18,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
+#include <linux/tracehook.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -275,3 +276,20 @@ asmlinkage void syscall_trace(void)
current->exit_code = 0;
}
}
+
+#ifdef CONFIG_COLDFIRE
+asmlinkage int syscall_trace_enter(void)
+{
+ int ret = 0;
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ ret = tracehook_report_syscall_entry(task_pt_regs(current));
+ return ret;
+}
+
+asmlinkage void syscall_trace_leave(void)
+{
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall_exit(task_pt_regs(current), 0);
+}
+#endif /* CONFIG_COLDFIRE */
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index c3b45061dd08..d872ce4807c9 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -221,7 +221,8 @@ void __init setup_arch(char **cmdline_p)
#endif
/* The bootinfo is located right after the kernel bss */
- m68k_parse_bootinfo((const struct bi_record *)_end);
+ if (!CPU_IS_COLDFIRE)
+ m68k_parse_bootinfo((const struct bi_record *)_end);
if (CPU_IS_040)
m68k_is040or060 = 4;
@@ -235,7 +236,7 @@ void __init setup_arch(char **cmdline_p)
* with them, we should add a test to check_bugs() below] */
#ifndef CONFIG_M68KFPU_EMU_ONLY
/* clear the fpu if we have one */
- if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
+ if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
volatile int zero = 0;
asm volatile ("frestore %0" : : "m" (zero));
}
@@ -258,6 +259,10 @@ void __init setup_arch(char **cmdline_p)
init_mm.end_data = (unsigned long)_edata;
init_mm.brk = (unsigned long)_end;
+#if defined(CONFIG_BOOTPARAM)
+ strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
+ m68k_command_line[CL_SIZE - 1] = 0;
+#endif /* CONFIG_BOOTPARAM */
*cmdline_p = m68k_command_line;
memcpy(boot_command_line, *cmdline_p, CL_SIZE);
@@ -323,6 +328,11 @@ void __init setup_arch(char **cmdline_p)
config_sun3x();
break;
#endif
+#ifdef CONFIG_COLDFIRE
+ case MACH_M54XX:
+ config_BSP(NULL, 0);
+ break;
+#endif
default:
panic("No configuration setup");
}
@@ -384,6 +394,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
#define LOOP_CYCLES_68030 (8)
#define LOOP_CYCLES_68040 (3)
#define LOOP_CYCLES_68060 (1)
+#define LOOP_CYCLES_COLDFIRE (2)
if (CPU_IS_020) {
cpu = "68020";
@@ -397,6 +408,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
} else if (CPU_IS_060) {
cpu = "68060";
clockfactor = LOOP_CYCLES_68060;
+ } else if (CPU_IS_COLDFIRE) {
+ cpu = "ColdFire";
+ clockfactor = LOOP_CYCLES_COLDFIRE;
} else {
cpu = "680x0";
clockfactor = 0;
@@ -415,6 +429,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
fpu = "68060";
else if (m68k_fputype & FPU_SUNFPA)
fpu = "Sun FPA";
+ else if (m68k_fputype & FPU_COLDFIRE)
+ fpu = "ColdFire";
else
fpu = "none";
#endif
@@ -431,6 +447,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
mmu = "Sun-3";
else if (m68k_mmutype & MMU_APOLLO)
mmu = "Apollo";
+ else if (m68k_mmutype & MMU_COLDFIRE)
+ mmu = "ColdFire";
else
mmu = "unknown";
diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c
index 2ed8c0fb1517..ca3df0dc7e88 100644
--- a/arch/m68k/kernel/setup_no.c
+++ b/arch/m68k/kernel/setup_no.c
@@ -47,7 +47,6 @@ EXPORT_SYMBOL(memory_end);
char __initdata command_line[COMMAND_LINE_SIZE];
/* machine dependent timer functions */
-void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
int (*mach_set_clock_mmss)(unsigned long);
/* machine dependent reboot functions */
diff --git a/arch/m68k/kernel/signal_mm.c b/arch/m68k/kernel/signal_mm.c
index a0afc239304e..cb856f9da655 100644
--- a/arch/m68k/kernel/signal_mm.c
+++ b/arch/m68k/kernel/signal_mm.c
@@ -56,7 +56,11 @@ static const int frame_extra_sizes[16] = {
[1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */
[2] = sizeof(((struct frame *)0)->un.fmt2),
[3] = sizeof(((struct frame *)0)->un.fmt3),
+#ifdef CONFIG_COLDFIRE
+ [4] = 0,
+#else
[4] = sizeof(((struct frame *)0)->un.fmt4),
+#endif
[5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */
[6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */
[7] = sizeof(((struct frame *)0)->un.fmt7),
@@ -84,7 +88,11 @@ int handle_kernel_fault(struct pt_regs *regs)
regs->stkadj = frame_extra_sizes[regs->format];
tregs = (struct pt_regs *)((long)regs + regs->stkadj);
tregs->vector = regs->vector;
+#ifdef CONFIG_COLDFIRE
+ tregs->format = 4;
+#else
tregs->format = 0;
+#endif
tregs->pc = fixup->fixup;
tregs->sr = regs->sr;
@@ -195,7 +203,8 @@ static inline int restore_fpu_state(struct sigcontext *sc)
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))
+ if (!(CPU_IS_060 || CPU_IS_COLDFIRE) &&
+ (sc->sc_fpstate[0] != fpu_version))
goto out;
if (CPU_IS_020_OR_030) {
if (m68k_fputype & FPU_68881 &&
@@ -214,19 +223,43 @@ static inline int restore_fpu_state(struct sigcontext *sc)
sc->sc_fpstate[3] == 0x60 ||
sc->sc_fpstate[3] == 0xe0))
goto out;
+ } else if (CPU_IS_COLDFIRE) {
+ if (!(sc->sc_fpstate[0] == 0x00 ||
+ sc->sc_fpstate[0] == 0x05 ||
+ sc->sc_fpstate[0] == 0xe5))
+ goto out;
} else
goto out;
- __asm__ volatile (".chip 68k/68881\n\t"
- "fmovemx %0,%%fp0-%%fp1\n\t"
- "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
- ".chip 68k"
- : /* no outputs */
- : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl));
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("fmovemd %0,%%fp0-%%fp1\n\t"
+ "fmovel %1,%%fpcr\n\t"
+ "fmovel %2,%%fpsr\n\t"
+ "fmovel %3,%%fpiar"
+ : /* no outputs */
+ : "m" (sc->sc_fpregs[0]),
+ "m" (sc->sc_fpcntl[0]),
+ "m" (sc->sc_fpcntl[1]),
+ "m" (sc->sc_fpcntl[2]));
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "fmovemx %0,%%fp0-%%fp1\n\t"
+ "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
+ ".chip 68k"
+ : /* no outputs */
+ : "m" (*sc->sc_fpregs),
+ "m" (*sc->sc_fpcntl));
+ }
+ }
+
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("frestore %0" : : "m" (*sc->sc_fpstate));
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "frestore %0\n\t"
+ ".chip 68k"
+ : : "m" (*sc->sc_fpstate));
}
- __asm__ volatile (".chip 68k/68881\n\t"
- "frestore %0\n\t"
- ".chip 68k" : : "m" (*sc->sc_fpstate));
err = 0;
out:
@@ -241,7 +274,7 @@ out:
static inline int rt_restore_fpu_state(struct ucontext __user *uc)
{
unsigned char fpstate[FPCONTEXT_SIZE];
- int context_size = CPU_IS_060 ? 8 : 0;
+ int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0);
fpregset_t fpregs;
int err = 1;
@@ -260,10 +293,11 @@ static inline int rt_restore_fpu_state(struct ucontext __user *uc)
if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
goto out;
if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
- if (!CPU_IS_060)
+ if (!(CPU_IS_060 || CPU_IS_COLDFIRE))
context_size = fpstate[1];
/* Verify the frame format. */
- if (!CPU_IS_060 && (fpstate[0] != fpu_version))
+ if (!(CPU_IS_060 || CPU_IS_COLDFIRE) &&
+ (fpstate[0] != fpu_version))
goto out;
if (CPU_IS_020_OR_030) {
if (m68k_fputype & FPU_68881 &&
@@ -282,26 +316,50 @@ static inline int rt_restore_fpu_state(struct ucontext __user *uc)
fpstate[3] == 0x60 ||
fpstate[3] == 0xe0))
goto out;
+ } else if (CPU_IS_COLDFIRE) {
+ if (!(fpstate[3] == 0x00 ||
+ fpstate[3] == 0x05 ||
+ fpstate[3] == 0xe5))
+ goto out;
} else
goto out;
if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
sizeof(fpregs)))
goto out;
- __asm__ volatile (".chip 68k/68881\n\t"
- "fmovemx %0,%%fp0-%%fp7\n\t"
- "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
- ".chip 68k"
- : /* no outputs */
- : "m" (*fpregs.f_fpregs),
- "m" (*fpregs.f_fpcntl));
+
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("fmovemd %0,%%fp0-%%fp7\n\t"
+ "fmovel %1,%%fpcr\n\t"
+ "fmovel %2,%%fpsr\n\t"
+ "fmovel %3,%%fpiar"
+ : /* no outputs */
+ : "m" (fpregs.f_fpregs[0]),
+ "m" (fpregs.f_fpcntl[0]),
+ "m" (fpregs.f_fpcntl[1]),
+ "m" (fpregs.f_fpcntl[2]));
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "fmovemx %0,%%fp0-%%fp7\n\t"
+ "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
+ ".chip 68k"
+ : /* no outputs */
+ : "m" (*fpregs.f_fpregs),
+ "m" (*fpregs.f_fpcntl));
+ }
}
if (context_size &&
__copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
context_size))
goto out;
- __asm__ volatile (".chip 68k/68881\n\t"
- "frestore %0\n\t"
- ".chip 68k" : : "m" (*fpstate));
+
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("frestore %0" : : "m" (*fpstate));
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "frestore %0\n\t"
+ ".chip 68k"
+ : : "m" (*fpstate));
+ }
err = 0;
out:
@@ -336,8 +394,12 @@ static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
regs->format = formatvec >> 12;
regs->vector = formatvec & 0xfff;
#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
- __asm__ __volatile__
- (" movel %0,%/a0\n\t"
+ __asm__ __volatile__ (
+#ifdef CONFIG_COLDFIRE
+ " movel %0,%/sp\n\t"
+ " bra ret_from_signal\n"
+#else
+ " movel %0,%/a0\n\t"
" subl %1,%/a0\n\t" /* make room on stack */
" movel %/a0,%/sp\n\t" /* set stack pointer */
/* move switch_stack and pt_regs */
@@ -350,6 +412,7 @@ static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
"2: movel %4@+,%/a0@+\n\t"
" dbra %1,2b\n\t"
" bral ret_from_signal\n"
+#endif
: /* no outputs, it doesn't ever return */
: "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
"n" (frame_offset), "a" (buf + fsize/4)
@@ -516,10 +579,15 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
return;
}
- __asm__ volatile (".chip 68k/68881\n\t"
- "fsave %0\n\t"
- ".chip 68k"
- : : "m" (*sc->sc_fpstate) : "memory");
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("fsave %0"
+ : : "m" (*sc->sc_fpstate) : "memory");
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "fsave %0\n\t"
+ ".chip 68k"
+ : : "m" (*sc->sc_fpstate) : "memory");
+ }
if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
fpu_version = sc->sc_fpstate[0];
@@ -530,21 +598,35 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
if (*(unsigned short *) sc->sc_fpstate == 0x1f38)
sc->sc_fpstate[0x38] |= 1 << 3;
}
- __asm__ volatile (".chip 68k/68881\n\t"
- "fmovemx %%fp0-%%fp1,%0\n\t"
- "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
- ".chip 68k"
- : "=m" (*sc->sc_fpregs),
- "=m" (*sc->sc_fpcntl)
- : /* no inputs */
- : "memory");
+
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("fmovemd %%fp0-%%fp1,%0\n\t"
+ "fmovel %%fpcr,%1\n\t"
+ "fmovel %%fpsr,%2\n\t"
+ "fmovel %%fpiar,%3"
+ : "=m" (sc->sc_fpregs[0]),
+ "=m" (sc->sc_fpcntl[0]),
+ "=m" (sc->sc_fpcntl[1]),
+ "=m" (sc->sc_fpcntl[2])
+ : /* no inputs */
+ : "memory");
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "fmovemx %%fp0-%%fp1,%0\n\t"
+ "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
+ ".chip 68k"
+ : "=m" (*sc->sc_fpregs),
+ "=m" (*sc->sc_fpcntl)
+ : /* no inputs */
+ : "memory");
+ }
}
}
static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)
{
unsigned char fpstate[FPCONTEXT_SIZE];
- int context_size = CPU_IS_060 ? 8 : 0;
+ int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0);
int err = 0;
if (FPU_IS_EMU) {
@@ -557,15 +639,19 @@ static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *
return err;
}
- __asm__ volatile (".chip 68k/68881\n\t"
- "fsave %0\n\t"
- ".chip 68k"
- : : "m" (*fpstate) : "memory");
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("fsave %0" : : "m" (*fpstate) : "memory");
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "fsave %0\n\t"
+ ".chip 68k"
+ : : "m" (*fpstate) : "memory");
+ }
err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);
if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
fpregset_t fpregs;
- if (!CPU_IS_060)
+ if (!(CPU_IS_060 || CPU_IS_COLDFIRE))
context_size = fpstate[1];
fpu_version = fpstate[0];
if (CPU_IS_020_OR_030 &&
@@ -575,14 +661,27 @@ static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *
if (*(unsigned short *) fpstate == 0x1f38)
fpstate[0x38] |= 1 << 3;
}
- __asm__ volatile (".chip 68k/68881\n\t"
- "fmovemx %%fp0-%%fp7,%0\n\t"
- "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
- ".chip 68k"
- : "=m" (*fpregs.f_fpregs),
- "=m" (*fpregs.f_fpcntl)
- : /* no inputs */
- : "memory");
+ if (CPU_IS_COLDFIRE) {
+ __asm__ volatile ("fmovemd %%fp0-%%fp7,%0\n\t"
+ "fmovel %%fpcr,%1\n\t"
+ "fmovel %%fpsr,%2\n\t"
+ "fmovel %%fpiar,%3"
+ : "=m" (fpregs.f_fpregs[0]),
+ "=m" (fpregs.f_fpcntl[0]),
+ "=m" (fpregs.f_fpcntl[1]),
+ "=m" (fpregs.f_fpcntl[2])
+ : /* no inputs */
+ : "memory");
+ } else {
+ __asm__ volatile (".chip 68k/68881\n\t"
+ "fmovemx %%fp0-%%fp7,%0\n\t"
+ "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
+ ".chip 68k"
+ : "=m" (*fpregs.f_fpregs),
+ "=m" (*fpregs.f_fpcntl)
+ : /* no inputs */
+ : "memory");
+ }
err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs,
sizeof(fpregs));
}
@@ -679,8 +778,7 @@ static inline void push_cache (unsigned long vaddr)
"cpushl %%bc,(%0)\n\t"
".chip 68k"
: : "a" (temp));
- }
- else {
+ } else if (!CPU_IS_COLDFIRE) {
/*
* 68030/68020 have no writeback cache;
* still need to clear icache.
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index a5cf40c26de5..75ab79b3bdeb 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -1,4 +1,4 @@
-#ifdef CONFIG_MMU
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
#include "time_mm.c"
#else
#include "time_no.c"
diff --git a/arch/m68k/kernel/time_no.c b/arch/m68k/kernel/time_no.c
index 6623909f70e6..3ef0f7768dcd 100644
--- a/arch/m68k/kernel/time_no.c
+++ b/arch/m68k/kernel/time_no.c
@@ -26,6 +26,9 @@
#define TICK_SIZE (tick_nsec / 1000)
+/* machine dependent timer functions */
+void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
+
static inline int set_rtc_mmss(unsigned long nowtime)
{
if (mach_set_clock_mmss)
diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c
index 89362f2bb56a..a76452ca964e 100644
--- a/arch/m68k/kernel/traps.c
+++ b/arch/m68k/kernel/traps.c
@@ -706,6 +706,88 @@ create_atc_entry:
#endif /* CPU_M68020_OR_M68030 */
#endif /* !CONFIG_SUN3 */
+#if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
+#include <asm/mcfmmu.h>
+
+/*
+ * 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 */
+};
+
+static inline void access_errorcf(unsigned int fs, struct frame *fp)
+{
+ unsigned long mmusr, addr;
+ unsigned int err_code;
+ int need_page_fault;
+
+ mmusr = mmu_read(MMUSR);
+ addr = mmu_read(MMUAR);
+
+ /*
+ * error_code:
+ * bit 0 == 0 means no page found, 1 means protection fault
+ * bit 1 == 0 means read, 1 means write
+ */
+ switch (fs) {
+ case 5: /* 0101 TLB opword X miss */
+ need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 0);
+ addr = fp->ptregs.pc;
+ break;
+ case 6: /* 0110 TLB extension word X miss */
+ need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 1);
+ addr = 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, addr, err_code);
+ }
+}
+#endif /* CONFIG_COLDFIRE CONFIG_MMU */
+
asmlinkage void buserr_c(struct frame *fp)
{
/* Only set esp0 if coming from user mode */
@@ -716,6 +798,28 @@ asmlinkage void buserr_c(struct frame *fp)
printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format);
#endif
+#if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
+ if (CPU_IS_COLDFIRE) {
+ unsigned int fs;
+ fs = (fp->ptregs.vector & 0x3) |
+ ((fp->ptregs.vector & 0xc00) >> 8);
+ switch (fs) {
+ case 0x5:
+ case 0x6:
+ case 0x7:
+ case 0x9:
+ case 0xa:
+ case 0xd:
+ case 0xe:
+ case 0xf:
+ access_errorcf(fs, fp);
+ return;
+ default:
+ break;
+ }
+ }
+#endif /* CONFIG_COLDFIRE && CONFIG_MMU */
+
switch (fp->ptregs.format) {
#if defined (CONFIG_M68060)
case 4: /* 68060 access error */
diff --git a/arch/m68k/kernel/vmlinux.lds_no.S b/arch/m68k/kernel/vmlinux-nommu.lds
index 4e2389340837..8e66ccb0935e 100644
--- a/arch/m68k/kernel/vmlinux.lds_no.S
+++ b/arch/m68k/kernel/vmlinux-nommu.lds
@@ -69,6 +69,7 @@ SECTIONS {
SCHED_TEXT
LOCK_TEXT
*(.text..lock)
+ *(.fixup)
. = ALIGN(16); /* Exception table */
__start___ex_table = .;
@@ -161,6 +162,13 @@ SECTIONS {
_edata = . ;
} > DATA
+ .m68k_fixup : {
+ __start_fixup = .;
+ *(.m68k_fixup)
+ __stop_fixup = .;
+ } > DATA
+ NOTES > DATA
+
.init.text : {
. = ALIGN(PAGE_SIZE);
__init_begin = .;
diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index d0993594f558..63407c836826 100644
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -31,7 +31,9 @@ SECTIONS
RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)
+ _sbss = .;
BSS_SECTION(0, 0, 0)
+ _ebss = .;
_edata = .; /* End of data section */
diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index 8080469ee6c1..ad0f46d64c0b 100644
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -44,7 +44,9 @@ __init_begin = .;
. = ALIGN(PAGE_SIZE);
__init_end = .;
+ _sbss = .;
BSS_SECTION(0, 0, 0)
+ _ebss = .;
_end = . ;
diff --git a/arch/m68k/kernel/vmlinux.lds.S b/arch/m68k/kernel/vmlinux.lds.S
index 030dabf0bc53..69ec79638870 100644
--- a/arch/m68k/kernel/vmlinux.lds.S
+++ b/arch/m68k/kernel/vmlinux.lds.S
@@ -1,5 +1,14 @@
-#ifdef CONFIG_MMU
-#include "vmlinux.lds_mm.S"
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
+PHDRS
+{
+ text PT_LOAD FILEHDR PHDRS FLAGS (7);
+ data PT_LOAD FLAGS (7);
+}
+#ifdef CONFIG_SUN3
+#include "vmlinux-sun3.lds"
#else
-#include "vmlinux.lds_no.S"
+#include "vmlinux-std.lds"
+#endif
+#else
+#include "vmlinux-nommu.lds"
#endif
diff --git a/arch/m68k/kernel/vmlinux.lds_mm.S b/arch/m68k/kernel/vmlinux.lds_mm.S
deleted file mode 100644
index 99ba315bd0a8..000000000000
--- a/arch/m68k/kernel/vmlinux.lds_mm.S
+++ /dev/null
@@ -1,10 +0,0 @@
-PHDRS
-{
- text PT_LOAD FILEHDR PHDRS FLAGS (7);
- data PT_LOAD FLAGS (7);
-}
-#ifdef CONFIG_SUN3
-#include "vmlinux-sun3.lds"
-#else
-#include "vmlinux-std.lds"
-#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 06:27:35 +0300