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Diffstat (limited to 'arch/ppc/cpu/mpc8220/traps.c')
-rw-r--r--arch/ppc/cpu/mpc8220/traps.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/arch/ppc/cpu/mpc8220/traps.c b/arch/ppc/cpu/mpc8220/traps.c
deleted file mode 100644
index 4565780..0000000
--- a/arch/ppc/cpu/mpc8220/traps.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * linux/arch/ppc/kernel/traps.c
- *
- * 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)
- * fixed Machine Check Reasons by Reinhard Meyer (r.meyer@emk-elektronik.de)
- *
- * (C) Copyright 2000-2003
- * 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>
-
-/* Returns 0 if exception not found and fixup otherwise. */
-extern unsigned long search_exception_table (unsigned long);
-
-/* THIS NEEDS CHANGING to use the board info structure.
-*/
-#define END_OF_MEM 0x02000000
-
-/*
- * 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 MachineCheckException (struct pt_regs *regs)
-{
- unsigned long fixup;
-
- /* 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;
- }
-#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 msr): ");
- printf ("regs %p ", regs);
- /* refer to 603e Manual (MPC603EUM/AD), chapter 4.5.2.1 */
- switch (regs->msr & 0x000F0000) {
- case (0x80000000 >> 12):
- printf ("Machine check signal - probably due to mm fault\n"
- "with mmu off\n");
- break;
- case (0x80000000 >> 13):
- printf ("Transfer error ack signal\n");
- break;
- case (0x80000000 >> 14):
- printf ("Data parity signal\n");
- break;
- case (0x80000000 >> 15):
- printf ("Address parity signal\n");
- break;
- default:
- printf ("Unknown values in msr\n");
- }
- show_regs (regs);
- print_backtrace ((unsigned long *) regs->gpr[1]);
- panic ("machine check");
-}
-
-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)
-{
-#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 ("Program Check Exception");
-}
-
-void SoftEmuException (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 ("Software Emulation Exception");
-}
-
-
-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);
-}
-
-#if defined(CONFIG_CMD_BEDBUG)
-extern void do_bedbug_breakpoint (struct pt_regs *);
-#endif
-
-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)
-{
-#if 0
- int retval;
-
- __asm__ __volatile__ ("1: lwz %0,0(%1)\n"
- " eieio\n"
- " li %0,0\n"
- "2:\n"
- ".section .fixup,\"ax\"\n"
- "3: li %0,-1\n"
- " b 2b\n"
- ".section __ex_table,\"a\"\n"
- " .align 2\n"
- " .long 1b,3b\n"
- ".text":"=r" (retval):"r" (addr));
-
- return (retval);
-#endif
- return 0;
-}
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