/*
- * File: arch/blackfin/kernel/traps.c
- * Based on:
- * Author: Hamish Macdonald
+ * Copyright 2004-2009 Analog Devices Inc.
*
- * Created:
- * Description: uses S/W interrupt 15 for the system calls
- *
- * Modified:
- * Copyright 2004-2006 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * Licensed under the GPL-2 or later
*/
+#include <linux/bug.h>
#include <linux/uaccess.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <asm/traps.h>
#include <asm/cacheflush.h>
#include <asm/cplb.h>
+#include <asm/dma.h>
#include <asm/blackfin.h>
#include <asm/irq_handler.h>
#include <linux/irq.h>
({ if (0) printk(fmt, ##arg); 0; })
#endif
+#if defined(CONFIG_DEBUG_MMRS) || defined(CONFIG_DEBUG_MMRS_MODULE)
+u32 last_seqstat;
+#ifdef CONFIG_DEBUG_MMRS_MODULE
+EXPORT_SYMBOL(last_seqstat);
+#endif
+#endif
+
/* Initiate the event table handler */
void __init trap_init(void)
{
static void decode_address(char *buf, unsigned long address)
{
#ifdef CONFIG_DEBUG_VERBOSE
- struct vm_list_struct *vml;
struct task_struct *p;
struct mm_struct *mm;
unsigned long flags, offset;
char *modname;
char *delim = ":";
char namebuf[128];
+#endif
+ buf += sprintf(buf, "<0x%08lx> ", address);
+
+#ifdef CONFIG_KALLSYMS
/* look up the address and see if we are in kernel space */
symname = kallsyms_lookup(address, &symsize, &offset, &modname, namebuf);
/* yeah! kernel space! */
if (!modname)
modname = delim = "";
- sprintf(buf, "<0x%p> { %s%s%s%s + 0x%lx }",
- (void *)address, delim, modname, delim, symname,
- (unsigned long)offset);
+ sprintf(buf, "{ %s%s%s%s + 0x%lx }",
+ delim, modname, delim, symname,
+ (unsigned long)offset);
return;
-
}
#endif
- /* Problem in fixed code section? */
if (address >= FIXED_CODE_START && address < FIXED_CODE_END) {
- sprintf(buf, "<0x%p> /* Maybe fixed code section */", (void *)address);
+ /* Problem in fixed code section? */
+ strcat(buf, "/* Maybe fixed code section */");
+ return;
+
+ } else if (address < CONFIG_BOOT_LOAD) {
+ /* Problem somewhere before the kernel start address */
+ strcat(buf, "/* Maybe null pointer? */");
return;
- }
- /* Problem somewhere before the kernel start address */
- if (address < CONFIG_BOOT_LOAD) {
- sprintf(buf, "<0x%p> /* Maybe null pointer? */", (void *)address);
+ } else if (address >= COREMMR_BASE) {
+ strcat(buf, "/* core mmrs */");
+ return;
+
+ } else if (address >= SYSMMR_BASE) {
+ strcat(buf, "/* system mmrs */");
+ return;
+
+ } else if (address >= L1_ROM_START && address < L1_ROM_START + L1_ROM_LENGTH) {
+ strcat(buf, "/* on-chip L1 ROM */");
return;
}
offset = (address - vma->vm_start) +
(vma->vm_pgoff << PAGE_SHIFT);
- sprintf(buf, "<0x%p> [ %s + 0x%lx ]",
- (void *)address, name, offset);
+ sprintf(buf, "[ %s + 0x%lx ]", name, offset);
} else
- sprintf(buf, "<0x%p> [ %s vma:0x%lx-0x%lx]",
- (void *)address, name,
- vma->vm_start, vma->vm_end);
+ sprintf(buf, "[ %s vma:0x%lx-0x%lx]",
+ name, vma->vm_start, vma->vm_end);
if (!in_atomic)
mmput(mm);
- if (!strlen(buf))
- sprintf(buf, "<0x%p> [ %s ] dynamic memory", (void *)address, name);
+ if (buf[0] == '\0')
+ sprintf(buf, "[ %s ] dynamic memory", name);
goto done;
}
}
/* we were unable to find this address anywhere */
- sprintf(buf, "<0x%p> /* kernel dynamic memory */", (void *)address);
+ sprintf(buf, "/* kernel dynamic memory */");
done:
write_unlock_irqrestore(&tasklist_lock, flags);
asmlinkage void double_fault_c(struct pt_regs *fp)
{
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
+ int j;
+ trace_buffer_save(j);
+#endif
+
console_verbose();
oops_in_progress = 1;
#ifdef CONFIG_DEBUG_VERBOSE
- printk(KERN_EMERG "\n" KERN_EMERG "Double Fault\n");
+ printk(KERN_EMERG "Double Fault\n");
#ifdef CONFIG_DEBUG_DOUBLEFAULT_PRINT
if (((long)fp->seqstat & SEQSTAT_EXCAUSE) == VEC_UNCOV) {
- unsigned int cpu = smp_processor_id();
+ unsigned int cpu = raw_smp_processor_id();
char buf[150];
- decode_address(buf, cpu_pda[cpu].retx);
+ decode_address(buf, cpu_pda[cpu].retx_doublefault);
printk(KERN_EMERG "While handling exception (EXCAUSE = 0x%x) at %s:\n",
- (unsigned int)cpu_pda[cpu].seqstat & SEQSTAT_EXCAUSE, buf);
- decode_address(buf, cpu_pda[cpu].dcplb_fault_addr);
+ (unsigned int)cpu_pda[cpu].seqstat_doublefault & SEQSTAT_EXCAUSE, buf);
+ decode_address(buf, cpu_pda[cpu].dcplb_doublefault_addr);
printk(KERN_NOTICE " DCPLB_FAULT_ADDR: %s\n", buf);
- decode_address(buf, cpu_pda[cpu].icplb_fault_addr);
+ decode_address(buf, cpu_pda[cpu].icplb_doublefault_addr);
printk(KERN_NOTICE " ICPLB_FAULT_ADDR: %s\n", buf);
decode_address(buf, fp->retx);
dump_bfin_process(fp);
dump_bfin_mem(fp);
show_regs(fp);
+ dump_bfin_trace_buffer();
}
#endif
panic("Double Fault - unrecoverable event");
}
-asmlinkage void trap_c(struct pt_regs *fp)
+static int kernel_mode_regs(struct pt_regs *regs)
+{
+ return regs->ipend & 0xffc0;
+}
+
+asmlinkage notrace void trap_c(struct pt_regs *fp)
{
#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
int j;
#endif
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
- unsigned int cpu = smp_processor_id();
+ unsigned int cpu = raw_smp_processor_id();
#endif
+ const char *strerror = NULL;
int sig = 0;
siginfo_t info;
unsigned long trapnr = fp->seqstat & SEQSTAT_EXCAUSE;
trace_buffer_save(j);
+#if defined(CONFIG_DEBUG_MMRS) || defined(CONFIG_DEBUG_MMRS_MODULE)
+ last_seqstat = (u32)fp->seqstat;
+#endif
/* Important - be very careful dereferncing pointers - will lead to
* double faults if the stack has become corrupt
*/
- /* If the fault was caused by a kernel thread, or interrupt handler
- * we will kernel panic, so the system reboots.
- * If KGDB is enabled, don't set this for kernel breakpoints
- */
-
- /* TODO: check to see if we are in some sort of deferred HWERR
- * that we should be able to recover from, not kernel panic
- */
- if ((bfin_read_IPEND() & 0xFFC0) && (trapnr != VEC_STEP)
-#ifdef CONFIG_KGDB
- && (trapnr != VEC_EXCPT02)
-#endif
- ){
- console_verbose();
- oops_in_progress = 1;
- } else if (current) {
- if (current->mm == NULL) {
- console_verbose();
- oops_in_progress = 1;
- }
- }
-
/* trap_c() will be called for exceptions. During exceptions
* processing, the pc value should be set with retx value.
* With this change we can cleanup some code in signal.c- TODO
sig = SIGTRAP;
CHK_DEBUGGER_TRAP_MAYBE();
/* Check if this is a breakpoint in kernel space */
- if (fp->ipend & 0xffc0)
- return;
+ if (kernel_mode_regs(fp))
+ goto traps_done;
else
break;
/* 0x03 - User Defined, userspace stack overflow */
case VEC_EXCPT03:
info.si_code = SEGV_STACKFLOW;
sig = SIGSEGV;
- verbose_printk(KERN_NOTICE EXC_0x03(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x03(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x02 - KGDB initial connection and break signal trap */
info.si_code = TRAP_ILLTRAP;
sig = SIGTRAP;
CHK_DEBUGGER_TRAP();
- return;
+ goto traps_done;
#endif
/* 0x04 - User Defined */
/* 0x05 - User Defined */
case VEC_EXCPT04 ... VEC_EXCPT15:
info.si_code = ILL_ILLPARAOP;
sig = SIGILL;
- verbose_printk(KERN_NOTICE EXC_0x04(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x04(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x10 HW Single step, handled here */
sig = SIGTRAP;
CHK_DEBUGGER_TRAP_MAYBE();
/* Check if this is a single step in kernel space */
- if (fp->ipend & 0xffc0)
- return;
+ if (kernel_mode_regs(fp))
+ goto traps_done;
else
break;
/* 0x11 - Trace Buffer Full, handled here */
case VEC_OVFLOW:
info.si_code = TRAP_TRACEFLOW;
sig = SIGTRAP;
- verbose_printk(KERN_NOTICE EXC_0x11(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x11(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x12 - Reserved, Caught by default */
/* 0x20 - Reserved, Caught by default */
/* 0x21 - Undefined Instruction, handled here */
case VEC_UNDEF_I:
+#ifdef CONFIG_BUG
+ if (kernel_mode_regs(fp)) {
+ switch (report_bug(fp->pc, fp)) {
+ case BUG_TRAP_TYPE_NONE:
+ break;
+ case BUG_TRAP_TYPE_WARN:
+ dump_bfin_trace_buffer();
+ fp->pc += 2;
+ goto traps_done;
+ case BUG_TRAP_TYPE_BUG:
+ /* call to panic() will dump trace, and it is
+ * off at this point, so it won't be clobbered
+ */
+ panic("BUG()");
+ }
+ }
+#endif
info.si_code = ILL_ILLOPC;
sig = SIGILL;
- verbose_printk(KERN_NOTICE EXC_0x21(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x21(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x22 - Illegal Instruction Combination, handled here */
case VEC_ILGAL_I:
info.si_code = ILL_ILLPARAOP;
sig = SIGILL;
- verbose_printk(KERN_NOTICE EXC_0x22(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x22(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x23 - Data CPLB protection violation, handled here */
case VEC_CPLB_VL:
info.si_code = ILL_CPLB_VI;
- sig = SIGBUS;
- verbose_printk(KERN_NOTICE EXC_0x23(KERN_NOTICE));
+ sig = SIGSEGV;
+ strerror = KERN_NOTICE EXC_0x23(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x24 - Data access misaligned, handled here */
case VEC_MISALI_D:
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE EXC_0x24(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x24(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x25 - Unrecoverable Event, handled here */
case VEC_UNCOV:
info.si_code = ILL_ILLEXCPT;
sig = SIGILL;
- verbose_printk(KERN_NOTICE EXC_0x25(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x25(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x26 - Data CPLB Miss, normal case is handled in _cplb_hdr,
case VEC_CPLB_M:
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE EXC_0x26(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x26(KERN_NOTICE);
break;
/* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero, handled here */
case VEC_CPLB_MHIT:
sig = SIGSEGV;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
if (cpu_pda[cpu].dcplb_fault_addr < FIXED_CODE_START)
- verbose_printk(KERN_NOTICE "NULL pointer access\n");
+ strerror = KERN_NOTICE "NULL pointer access\n";
else
#endif
- verbose_printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x27(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x28 - Emulation Watchpoint, handled here */
pr_debug(EXC_0x28(KERN_DEBUG));
CHK_DEBUGGER_TRAP_MAYBE();
/* Check if this is a watchpoint in kernel space */
- if (fp->ipend & 0xffc0)
- return;
+ if (kernel_mode_regs(fp))
+ goto traps_done;
else
break;
#ifdef CONFIG_BF535
case VEC_ISTRU_VL: /* ADSP-BF535 only (MH) */
info.si_code = BUS_OPFETCH;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE "BF535: VEC_ISTRU_VL\n");
+ strerror = KERN_NOTICE "BF535: VEC_ISTRU_VL\n";
CHK_DEBUGGER_TRAP_MAYBE();
break;
#else
case VEC_MISALI_I:
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE EXC_0x2A(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x2A(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2B - Instruction CPLB protection violation, handled here */
case VEC_CPLB_I_VL:
info.si_code = ILL_CPLB_VI;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE EXC_0x2B(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x2B(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2C - Instruction CPLB miss, handled in _cplb_hdr */
case VEC_CPLB_I_M:
info.si_code = ILL_CPLB_MISS;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE EXC_0x2C(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x2C(KERN_NOTICE);
break;
/* 0x2D - Instruction CPLB Multiple Hits, handled here */
case VEC_CPLB_I_MHIT:
sig = SIGSEGV;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
if (cpu_pda[cpu].icplb_fault_addr < FIXED_CODE_START)
- verbose_printk(KERN_NOTICE "Jump to NULL address\n");
+ strerror = KERN_NOTICE "Jump to NULL address\n";
else
#endif
- verbose_printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x2D(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2E - Illegal use of Supervisor Resource, handled here */
case VEC_ILL_RES:
info.si_code = ILL_PRVOPC;
sig = SIGILL;
- verbose_printk(KERN_NOTICE EXC_0x2E(KERN_NOTICE));
+ strerror = KERN_NOTICE EXC_0x2E(KERN_NOTICE);
CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2F - Reserved, Caught by default */
case (SEQSTAT_HWERRCAUSE_SYSTEM_MMR):
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE HWC_x2(KERN_NOTICE));
+ strerror = KERN_NOTICE HWC_x2(KERN_NOTICE);
break;
/* External Memory Addressing Error */
case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR):
info.si_code = BUS_ADRERR;
sig = SIGBUS;
- verbose_printk(KERN_NOTICE HWC_x3(KERN_NOTICE));
+ strerror = KERN_NOTICE HWC_x3(KERN_NOTICE);
break;
/* Performance Monitor Overflow */
case (SEQSTAT_HWERRCAUSE_PERF_FLOW):
- verbose_printk(KERN_NOTICE HWC_x12(KERN_NOTICE));
+ strerror = KERN_NOTICE HWC_x12(KERN_NOTICE);
break;
/* RAISE 5 instruction */
case (SEQSTAT_HWERRCAUSE_RAISE_5):
* if we get here we hit a reserved one, so panic
*/
default:
- oops_in_progress = 1;
info.si_code = ILL_ILLPARAOP;
sig = SIGILL;
verbose_printk(KERN_EMERG "Caught Unhandled Exception, code = %08lx\n",
BUG_ON(sig == 0);
+ /* If the fault was caused by a kernel thread, or interrupt handler
+ * we will kernel panic, so the system reboots.
+ */
+ if (kernel_mode_regs(fp) || (current && !current->mm)) {
+ console_verbose();
+ oops_in_progress = 1;
+ }
+
if (sig != SIGTRAP) {
+ if (strerror)
+ verbose_printk(strerror);
+
dump_bfin_process(fp);
dump_bfin_mem(fp);
show_regs(fp);
#ifndef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE
if (trapnr == VEC_CPLB_I_M || trapnr == VEC_CPLB_M)
verbose_printk(KERN_NOTICE "No trace since you do not have "
- "CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE enabled\n"
- KERN_NOTICE "\n");
+ "CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE enabled\n\n");
else
#endif
dump_bfin_trace_buffer();
if (oops_in_progress) {
/* Dump the current kernel stack */
- verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "Kernel Stack\n");
+ verbose_printk(KERN_NOTICE "Kernel Stack\n");
show_stack(current, NULL);
print_modules();
#ifndef CONFIG_ACCESS_CHECK
force_sig_info(sig, &info, current);
}
+ if ((ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8)) ||
+ (ANOMALY_05000281 && trapnr == VEC_HWERR) ||
+ (ANOMALY_05000189 && (trapnr == VEC_CPLB_I_VL || trapnr == VEC_CPLB_VL)))
+ fp->pc = SAFE_USER_INSTRUCTION;
+
+ traps_done:
trace_buffer_restore(j);
- return;
}
/* Typical exception handling routines */
*/
static bool get_instruction(unsigned short *val, unsigned short *address)
{
-
- unsigned long addr;
-
- addr = (unsigned long)address;
+ unsigned long addr = (unsigned long)address;
/* Check for odd addresses */
if (addr & 0x1)
return false;
- /* Check that things do not wrap around */
- if (addr > (addr + 2))
+ /* MMR region will never have instructions */
+ if (addr >= SYSMMR_BASE)
return false;
- /*
- * Since we are in exception context, we need to do a little address checking
- * We need to make sure we are only accessing valid memory, and
- * we don't read something in the async space that can hang forever
- */
- if ((addr >= FIXED_CODE_START && (addr + 2) <= physical_mem_end) ||
-#if L2_LENGTH != 0
- (addr >= L2_START && (addr + 2) <= (L2_START + L2_LENGTH)) ||
-#endif
- (addr >= BOOT_ROM_START && (addr + 2) <= (BOOT_ROM_START + BOOT_ROM_LENGTH)) ||
-#if L1_DATA_A_LENGTH != 0
- (addr >= L1_DATA_A_START && (addr + 2) <= (L1_DATA_A_START + L1_DATA_A_LENGTH)) ||
-#endif
-#if L1_DATA_B_LENGTH != 0
- (addr >= L1_DATA_B_START && (addr + 2) <= (L1_DATA_B_START + L1_DATA_B_LENGTH)) ||
-#endif
- (addr >= L1_SCRATCH_START && (addr + 2) <= (L1_SCRATCH_START + L1_SCRATCH_LENGTH)) ||
- (!(bfin_read_EBIU_AMBCTL0() & B0RDYEN) &&
- addr >= ASYNC_BANK0_BASE && (addr + 2) <= (ASYNC_BANK0_BASE + ASYNC_BANK0_SIZE)) ||
- (!(bfin_read_EBIU_AMBCTL0() & B1RDYEN) &&
- addr >= ASYNC_BANK1_BASE && (addr + 2) <= (ASYNC_BANK1_BASE + ASYNC_BANK1_SIZE)) ||
- (!(bfin_read_EBIU_AMBCTL1() & B2RDYEN) &&
- addr >= ASYNC_BANK2_BASE && (addr + 2) <= (ASYNC_BANK2_BASE + ASYNC_BANK1_SIZE)) ||
- (!(bfin_read_EBIU_AMBCTL1() & B3RDYEN) &&
- addr >= ASYNC_BANK3_BASE && (addr + 2) <= (ASYNC_BANK3_BASE + ASYNC_BANK1_SIZE))) {
- *val = *address;
- return true;
+ switch (bfin_mem_access_type(addr, 2)) {
+ case BFIN_MEM_ACCESS_CORE:
+ case BFIN_MEM_ACCESS_CORE_ONLY:
+ *val = *address;
+ return true;
+ case BFIN_MEM_ACCESS_DMA:
+ dma_memcpy(val, address, 2);
+ return true;
+ case BFIN_MEM_ACCESS_ITEST:
+ isram_memcpy(val, address, 2);
+ return true;
+ default: /* invalid access */
+ return false;
}
-
-#if L1_CODE_LENGTH != 0
- if (addr >= L1_CODE_START && (addr + 2) <= (L1_CODE_START + L1_CODE_LENGTH)) {
- isram_memcpy(val, address, 2);
- return true;
- }
-#endif
-
-
- return false;
}
/*
}
EXPORT_SYMBOL(dump_bfin_trace_buffer);
+#ifdef CONFIG_BUG
+int is_valid_bugaddr(unsigned long addr)
+{
+ unsigned short opcode;
+
+ if (!get_instruction(&opcode, (unsigned short *)addr))
+ return 0;
+
+ return opcode == BFIN_BUG_OPCODE;
+}
+#endif
+
/*
* Checks to see if the address pointed to is either a
* 16-bit CALL instruction, or a 32-bit CALL instruction
decode_address(buf, (unsigned int)stack);
printk(KERN_NOTICE " SP: [0x%p] %s\n", stack, buf);
+ if (!access_ok(VERIFY_READ, stack, (unsigned int)endstack - (unsigned int)stack)) {
+ printk(KERN_NOTICE "Invalid stack pointer\n");
+ return;
+ }
+
/* First thing is to look for a frame pointer */
for (addr = (unsigned int *)((unsigned int)stack & ~0xF); addr < endstack; addr++) {
if (*addr & 0x1)
frame_no = 0;
for (addr = (unsigned int *)((unsigned int)stack & ~0xF), i = 0;
- addr <= endstack; addr++, i++) {
+ addr < endstack; addr++, i++) {
ret_addr = 0;
if (!j && i % 8 == 0)
- printk("\n" KERN_NOTICE "%p:",addr);
+ printk(KERN_NOTICE "%p:",addr);
/* if it is an odd address, or zero, just skip it */
if (*addr & 0x1 || !*addr)
}
#endif
}
+EXPORT_SYMBOL(show_stack);
void dump_stack(void)
{
printk(KERN_NOTICE "CPU = %d\n", current_thread_info()->cpu);
if (!((unsigned long)current->mm & 0x3) && (unsigned long)current->mm >= FIXED_CODE_START)
- verbose_printk(KERN_NOTICE "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
- KERN_NOTICE " BSS = 0x%p-0x%p USER-STACK = 0x%p\n"
- KERN_NOTICE "\n",
+ verbose_printk(KERN_NOTICE
+ "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
+ " BSS = 0x%p-0x%p USER-STACK = 0x%p\n\n",
(void *)current->mm->start_code,
(void *)current->mm->end_code,
(void *)current->mm->start_data,
else
verbose_printk(KERN_NOTICE "invalid mm\n");
} else
- verbose_printk(KERN_NOTICE "\n" KERN_NOTICE
- "No Valid process in current context\n");
+ verbose_printk(KERN_NOTICE
+ "No Valid process in current context\n");
#endif
}
addr < (unsigned short *)((unsigned long)erraddr & ~0xF) + 0x10;
addr++) {
if (!((unsigned long)addr & 0xF))
- verbose_printk("\n" KERN_NOTICE "0x%p: ", addr);
+ verbose_printk(KERN_NOTICE "0x%p: ", addr);
if (!get_instruction(&val, addr)) {
val = 0;
oops_in_progress)){
verbose_printk(KERN_NOTICE "Looks like this was a deferred error - sorry\n");
#ifndef CONFIG_DEBUG_HWERR
- verbose_printk(KERN_NOTICE "The remaining message may be meaningless\n"
- KERN_NOTICE "You should enable CONFIG_DEBUG_HWERR to get a"
- " better idea where it came from\n");
+ verbose_printk(KERN_NOTICE
+"The remaining message may be meaningless\n"
+"You should enable CONFIG_DEBUG_HWERR to get a better idea where it came from\n");
#else
/* If we are handling only one peripheral interrupt
* and current mm and pid are valid, and the last error
struct irqaction *action;
unsigned int i;
unsigned long flags = 0;
- unsigned int cpu = smp_processor_id();
+ unsigned int cpu = raw_smp_processor_id();
unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic();
- verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\t\t%s\n", print_tainted());
- verbose_printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
- (long)fp->seqstat, fp->ipend, fp->syscfg);
+ verbose_printk(KERN_NOTICE "\n");
+ if (CPUID != bfin_cpuid())
+ verbose_printk(KERN_NOTICE "Compiled for cpu family 0x%04x (Rev %d), "
+ "but running on:0x%04x (Rev %d)\n",
+ CPUID, bfin_compiled_revid(), bfin_cpuid(), bfin_revid());
+
+ verbose_printk(KERN_NOTICE "ADSP-%s-0.%d",
+ CPU, bfin_compiled_revid());
+
+ if (bfin_compiled_revid() != bfin_revid())
+ verbose_printk("(Detected 0.%d)", bfin_revid());
+
+ verbose_printk(" %lu(MHz CCLK) %lu(MHz SCLK) (%s)\n",
+ get_cclk()/1000000, get_sclk()/1000000,
+#ifdef CONFIG_MPU
+ "mpu on"
+#else
+ "mpu off"
+#endif
+ );
+
+ verbose_printk(KERN_NOTICE "%s", linux_banner);
+
+ verbose_printk(KERN_NOTICE "\nSEQUENCER STATUS:\t\t%s\n", print_tainted());
+ verbose_printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx IMASK: %04lx SYSCFG: %04lx\n",
+ (long)fp->seqstat, fp->ipend, cpu_pda[raw_smp_processor_id()].ex_imask, fp->syscfg);
+ if (fp->ipend & EVT_IRPTEN)
+ verbose_printk(KERN_NOTICE " Global Interrupts Disabled (IPEND[4])\n");
+ if (!(cpu_pda[raw_smp_processor_id()].ex_imask & (EVT_IVG13 | EVT_IVG12 | EVT_IVG11 |
+ EVT_IVG10 | EVT_IVG9 | EVT_IVG8 | EVT_IVG7 | EVT_IVTMR)))
+ verbose_printk(KERN_NOTICE " Peripheral interrupts masked off\n");
+ if (!(cpu_pda[raw_smp_processor_id()].ex_imask & (EVT_IVG15 | EVT_IVG14)))
+ verbose_printk(KERN_NOTICE " Kernel interrupts masked off\n");
if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) {
verbose_printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n",
(fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14);
verbose_printk(KERN_NOTICE "ICPLB_FAULT_ADDR: %s\n", buf);
}
- verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "PROCESSOR STATE:\n");
+ verbose_printk(KERN_NOTICE "PROCESSOR STATE:\n");
verbose_printk(KERN_NOTICE " R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n",
fp->r0, fp->r1, fp->r2, fp->r3);
verbose_printk(KERN_NOTICE " R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n",
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff