summaryrefslogtreecommitdiff
path: root/arch/ppc/cpu/mpc85xx/traps.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc/cpu/mpc85xx/traps.c')
-rw-r--r--arch/ppc/cpu/mpc85xx/traps.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/arch/ppc/cpu/mpc85xx/traps.c b/arch/ppc/cpu/mpc85xx/traps.c
deleted file mode 100644
index 10108d8..0000000
--- a/arch/ppc/cpu/mpc85xx/traps.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * linux/arch/ppc/kernel/traps.c
- *
- * Copyright 2007 Freescale Semiconductor.
- * Copyright (C) 2003 Motorola
- * Modified by Xianghua Xiao(x.xiao@motorola.com)
- *
- * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- * Modified by Cort Dougan (cort@cs.nmt.edu)
- * and Paul Mackerras (paulus@cs.anu.edu.au)
- *
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/*
- * This file handles the architecture-dependent parts of hardware exceptions
- */
-
-#include <common.h>
-#include <command.h>
-#include <kgdb.h>
-#include <asm/processor.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* Returns 0 if exception not found and fixup otherwise. */
-extern unsigned long search_exception_table(unsigned long);
-
-/*
- * End of addressable memory. This may be less than the actual
- * amount of memory on the system if we're unable to keep all
- * the memory mapped in.
- */
-extern ulong get_effective_memsize(void);
-#define END_OF_MEM (gd->bd->bi_memstart + get_effective_memsize())
-
-static __inline__ void set_tsr(unsigned long val)
-{
- asm volatile("mtspr 0x150, %0" : : "r" (val));
-}
-
-static __inline__ unsigned long get_esr(void)
-{
- unsigned long val;
- asm volatile("mfspr %0, 0x03e" : "=r" (val) :);
- return val;
-}
-
-#define ESR_MCI 0x80000000
-#define ESR_PIL 0x08000000
-#define ESR_PPR 0x04000000
-#define ESR_PTR 0x02000000
-#define ESR_DST 0x00800000
-#define ESR_DIZ 0x00400000
-#define ESR_U0F 0x00008000
-
-#if defined(CONFIG_CMD_BEDBUG)
-extern void do_bedbug_breakpoint(struct pt_regs *);
-#endif
-
-/*
- * Trap & Exception support
- */
-
-void
-print_backtrace(unsigned long *sp)
-{
- int cnt = 0;
- unsigned long i;
-
- printf("Call backtrace: ");
- while (sp) {
- if ((uint)sp > END_OF_MEM)
- break;
-
- i = sp[1];
- if (cnt++ % 7 == 0)
- printf("\n");
- printf("%08lX ", i);
- if (cnt > 32) break;
- sp = (unsigned long *)*sp;
- }
- printf("\n");
-}
-
-void show_regs(struct pt_regs * regs)
-{
- int i;
-
- printf("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DAR: %08lX\n",
- regs->nip, regs->xer, regs->link, regs, regs->trap, regs->dar);
- printf("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
- regs->msr, regs->msr&MSR_EE ? 1 : 0, regs->msr&MSR_PR ? 1 : 0,
- regs->msr & MSR_FP ? 1 : 0,regs->msr&MSR_ME ? 1 : 0,
- regs->msr&MSR_IR ? 1 : 0,
- regs->msr&MSR_DR ? 1 : 0);
-
- printf("\n");
- for (i = 0; i < 32; i++) {
- if ((i % 8) == 0)
- {
- printf("GPR%02d: ", i);
- }
-
- printf("%08lX ", regs->gpr[i]);
- if ((i % 8) == 7)
- {
- printf("\n");
- }
- }
-}
-
-
-void
-_exception(int signr, struct pt_regs *regs)
-{
- show_regs(regs);
- print_backtrace((unsigned long *)regs->gpr[1]);
- panic("Exception in kernel pc %lx signal %d",regs->nip,signr);
-}
-
-void
-CritcalInputException(struct pt_regs *regs)
-{
- panic("Critical Input Exception");
-}
-
-int machinecheck_count = 0;
-int machinecheck_error = 0;
-void
-MachineCheckException(struct pt_regs *regs)
-{
- unsigned long fixup;
- unsigned int mcsr, mcsrr0, mcsrr1, mcar;
-
- /* Probing PCI using config cycles cause this exception
- * when a device is not present. Catch it and return to
- * the PCI exception handler.
- */
- if ((fixup = search_exception_table(regs->nip)) != 0) {
- regs->nip = fixup;
- return;
- }
-
- mcsrr0 = mfspr(SPRN_MCSRR0);
- mcsrr1 = mfspr(SPRN_MCSRR1);
- mcsr = mfspr(SPRN_MCSR);
- mcar = mfspr(SPRN_MCAR);
-
- machinecheck_count++;
- machinecheck_error=1;
-
-#if defined(CONFIG_CMD_KGDB)
- if (debugger_exception_handler && (*debugger_exception_handler)(regs))
- return;
-#endif
-
- printf("Machine check in kernel mode.\n");
- printf("Caused by (from mcsr): ");
- printf("mcsr = 0x%08x\n", mcsr);
- if (mcsr & 0x80000000)
- printf("Machine check input pin\n");
- if (mcsr & 0x40000000)
- printf("Instruction cache parity error\n");
- if (mcsr & 0x20000000)
- printf("Data cache push parity error\n");
- if (mcsr & 0x10000000)
- printf("Data cache parity error\n");
- if (mcsr & 0x00000080)
- printf("Bus instruction address error\n");
- if (mcsr & 0x00000040)
- printf("Bus Read address error\n");
- if (mcsr & 0x00000020)
- printf("Bus Write address error\n");
- if (mcsr & 0x00000010)
- printf("Bus Instruction data bus error\n");
- if (mcsr & 0x00000008)
- printf("Bus Read data bus error\n");
- if (mcsr & 0x00000004)
- printf("Bus Write bus error\n");
- if (mcsr & 0x00000002)
- printf("Bus Instruction parity error\n");
- if (mcsr & 0x00000001)
- printf("Bus Read parity error\n");
-
- show_regs(regs);
- printf("MCSR=0x%08x \tMCSRR0=0x%08x \nMCSRR1=0x%08x \tMCAR=0x%08x\n",
- mcsr, mcsrr0, mcsrr1, mcar);
- print_backtrace((unsigned long *)regs->gpr[1]);
- if (machinecheck_count > 10) {
- panic("machine check count too high\n");
- }
-
- if (machinecheck_count > 1) {
- regs->nip += 4; /* skip offending instruction */
- printf("Skipping current instr, Returning to 0x%08lx\n",
- regs->nip);
- } else {
- printf("Returning back to 0x%08lx\n",regs->nip);
- }
-}
-
-void
-AlignmentException(struct pt_regs *regs)
-{
-#if defined(CONFIG_CMD_KGDB)
- if (debugger_exception_handler && (*debugger_exception_handler)(regs))
- return;
-#endif
-
- show_regs(regs);
- print_backtrace((unsigned long *)regs->gpr[1]);
- panic("Alignment Exception");
-}
-
-void
-ProgramCheckException(struct pt_regs *regs)
-{
- long esr_val;
-
-#if defined(CONFIG_CMD_KGDB)
- if (debugger_exception_handler && (*debugger_exception_handler)(regs))
- return;
-#endif
-
- show_regs(regs);
-
- esr_val = get_esr();
- if( esr_val & ESR_PIL )
- printf( "** Illegal Instruction **\n" );
- else if( esr_val & ESR_PPR )
- printf( "** Privileged Instruction **\n" );
- else if( esr_val & ESR_PTR )
- printf( "** Trap Instruction **\n" );
-
- print_backtrace((unsigned long *)regs->gpr[1]);
- panic("Program Check Exception");
-}
-
-void
-PITException(struct pt_regs *regs)
-{
- /*
- * Reset PIT interrupt
- */
- set_tsr(0x0c000000);
-
- /*
- * Call timer_interrupt routine in interrupts.c
- */
- timer_interrupt(NULL);
-}
-
-
-void
-UnknownException(struct pt_regs *regs)
-{
-#if defined(CONFIG_CMD_KGDB)
- if (debugger_exception_handler && (*debugger_exception_handler)(regs))
- return;
-#endif
-
- printf("Bad trap at PC: %lx, SR: %lx, vector=%lx\n",
- regs->nip, regs->msr, regs->trap);
- _exception(0, regs);
-}
-
-void
-ExtIntException(struct pt_regs *regs)
-{
- volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
-
- uint vect;
-
-#if defined(CONFIG_CMD_KGDB)
- if (debugger_exception_handler && (*debugger_exception_handler)(regs))
- return;
-#endif
-
- printf("External Interrupt Exception at PC: %lx, SR: %lx, vector=%lx",
- regs->nip, regs->msr, regs->trap);
- vect = pic->iack0;
- printf(" irq IACK0@%05x=%d\n",(int)&pic->iack0,vect);
- show_regs(regs);
- print_backtrace((unsigned long *)regs->gpr[1]);
-}
-
-void
-DebugException(struct pt_regs *regs)
-{
- printf("Debugger trap at @ %lx\n", regs->nip );
- show_regs(regs);
-#if defined(CONFIG_CMD_BEDBUG)
- do_bedbug_breakpoint( regs );
-#endif
-}
-
-/* Probe an address by reading. If not present, return -1, otherwise
- * return 0.
- */
-int
-addr_probe(uint *addr)
-{
- return 0;
-}
generated by cgit v1.1 at 2024-11-06 00:16:16 +0000