From 8993e54b6f397973794f3d6f47d3b3c0c98dd4f6 Mon Sep 17 00:00:00 2001 From: Rafal Jaworowski Date: Fri, 27 Jul 2007 14:43:59 +0200 Subject: [ADS5121] Support for the ADS5121 board The following MPC5121e subsystems are supported: - low-level CPU init - NOR Boot Flash (common CFI driver) - DDR SDRAM - FEC - I2C - Watchdog Signed-off-by: Grzegorz Bernacki Signed-off-by: Rafal Jaworowski Signed-off-by: Jan Wrobel --- cpu/mpc512x/traps.c | 205 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 205 insertions(+) create mode 100644 cpu/mpc512x/traps.c (limited to 'cpu/mpc512x/traps.c') diff --git a/cpu/mpc512x/traps.c b/cpu/mpc512x/traps.c new file mode 100644 index 0000000..40281a2 --- /dev/null +++ b/cpu/mpc512x/traps.c @@ -0,0 +1,205 @@ +/* + * (C) Copyright 2000 - 2007 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * Derived from the MPC83xx code. + */ + +/* + * This file handles the architecture-dependent parts of hardware + * exceptions + */ + +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +extern unsigned long search_exception_table(unsigned long); + +#define END_OF_MEM (gd->bd->bi_memstart + gd->bd->bi_memsize) + +/* + * Trap & Exception support + */ + +void +print_backtrace (unsigned long *sp) +{ + int cnt = 0; + unsigned long i; + + puts ("Call backtrace: "); + while (sp) { + if ((uint)sp > END_OF_MEM) + break; + + i = sp[1]; + if (cnt++ % 7 == 0) + putc ('\n'); + printf ("%08lX ", i); + if (cnt > 32) break; + sp = (unsigned long *) *sp; + } + putc ('\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); + + putc ('\n'); + for (i = 0; i < 32; i++) { + if ((i % 8) == 0) { + printf ("GPR%02d: ", i); + } + + printf ("%08lX ", regs->gpr[i]); + if ((i % 8) == 7) { + putc ('\n'); + } + } +} + + +void +_exception (int signr, struct pt_regs *regs) +{ + show_regs (regs); + print_backtrace ((unsigned long *)regs->gpr[1]); + panic ("Exception at pc %lx signal %d", regs->nip,signr); +} + + +void +MachineCheckException (struct pt_regs *regs) +{ + unsigned long fixup; + + if ((fixup = search_exception_table (regs->nip)) != 0) { + regs->nip = fixup; + return; + } + +#if (CONFIG_COMMANDS & CFG_CMD_KGDB) + if (debugger_exception_handler && (*debugger_exception_handler)(regs)) + return; +#endif + + puts ("Machine check.\nCaused by (from msr): "); + printf ("regs %p ",regs); + switch (regs->msr & 0x00FF0000) { + case (0x80000000 >> 10): + puts ("Instruction cache parity signal\n"); + break; + case (0x80000000 >> 11): + puts ("Data cache parity signal\n"); + break; + case (0x80000000 >> 12): + puts ("Machine check signal\n"); + break; + case (0x80000000 >> 13): + puts ("Transfer error ack signal\n"); + break; + case (0x80000000 >> 14): + puts ("Data parity signal\n"); + break; + case (0x80000000 >> 15): + puts ("Address parity signal\n"); + break; + default: + puts ("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 (CONFIG_COMMANDS & CFG_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 (CONFIG_COMMANDS & CFG_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 (CONFIG_COMMANDS & CFG_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 (CONFIG_COMMANDS & CFG_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 (CONFIG_COMMANDS & CFG_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 (CONFIG_COMMANDS & CFG_CMD_BEDBUG) + do_bedbug_breakpoint (regs); +#endif +} -- cgit v1.1 From afaac86fe2948ac84cd9a12bbed883b3c683e7d9 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Sun, 12 Aug 2007 14:27:39 +0200 Subject: Clean up some remaining CFG_CMD_ -> CONFIG_CMD_ issues. Signed-off-by: Wolfgang Denk --- cpu/mpc512x/traps.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'cpu/mpc512x/traps.c') diff --git a/cpu/mpc512x/traps.c b/cpu/mpc512x/traps.c index 40281a2..8455c92 100644 --- a/cpu/mpc512x/traps.c +++ b/cpu/mpc512x/traps.c @@ -106,7 +106,7 @@ MachineCheckException (struct pt_regs *regs) return; } -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#ifdef CONFIG_CMD_KGDB if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -144,7 +144,7 @@ MachineCheckException (struct pt_regs *regs) void AlignmentException (struct pt_regs *regs) { -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#ifdef CONFIG_CMD_KGDB if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -156,7 +156,7 @@ AlignmentException (struct pt_regs *regs) void ProgramCheckException (struct pt_regs *regs) { -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#ifdef CONFIG_CMD_KGDB if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -168,7 +168,7 @@ ProgramCheckException (struct pt_regs *regs) void SoftEmuException (struct pt_regs *regs) { -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#ifdef CONFIG_CMD_KGDB if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -181,7 +181,7 @@ SoftEmuException (struct pt_regs *regs) void UnknownException (struct pt_regs *regs) { -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#ifdef CONFIG_CMD_KGDB if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -190,7 +190,7 @@ UnknownException (struct pt_regs *regs) _exception (0, regs); } -#if (CONFIG_COMMANDS & CFG_CMD_BEDBUG) +#ifdef CONFIG_CMD_BEDBUG extern void do_bedbug_breakpoint (struct pt_regs *); #endif @@ -199,7 +199,7 @@ DebugException (struct pt_regs *regs) { printf ("Debugger trap at @ %lx\n", regs->nip ); show_regs (regs); -#if (CONFIG_COMMANDS & CFG_CMD_BEDBUG) +#ifdef CONFIG_CMD_BEDBUG do_bedbug_breakpoint (regs); #endif } -- cgit v1.1