/* * Copyright (C) 2005-2006 Atmel Corporation * * 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 */ #include <common.h> #include <asm/sysreg.h> #include <asm/ptrace.h> DECLARE_GLOBAL_DATA_PTR; static const char * const cpu_modes[8] = { "Application", "Supervisor", "Interrupt level 0", "Interrupt level 1", "Interrupt level 2", "Interrupt level 3", "Exception", "NMI" }; static void dump_mem(const char *str, unsigned long bottom, unsigned long top) { unsigned long p; int i; printf("%s(0x%08lx to 0x%08lx)\n", str, bottom, top); for (p = bottom & ~31; p < top; ) { printf("%04lx: ", p & 0xffff); for (i = 0; i < 8; i++, p += 4) { unsigned int val; if (p < bottom || p >= top) printf(" "); else { val = *(unsigned long *)p; printf("%08x ", val); } } printf("\n"); } } void do_unknown_exception(unsigned int ecr, struct pt_regs *regs) { unsigned int mode; printf("\n *** Unhandled exception %u at PC=0x%08lx\n", ecr, regs->pc); switch (ecr) { case ECR_BUS_ERROR_WRITE: case ECR_BUS_ERROR_READ: printf("Bus error at address 0x%08lx\n", sysreg_read(BEAR)); break; case ECR_TLB_MULTIPLE: case ECR_ADDR_ALIGN_X: case ECR_PROTECTION_X: case ECR_ADDR_ALIGN_R: case ECR_ADDR_ALIGN_W: case ECR_PROTECTION_R: case ECR_PROTECTION_W: case ECR_DTLB_MODIFIED: case ECR_TLB_MISS_X: case ECR_TLB_MISS_R: case ECR_TLB_MISS_W: printf("MMU exception at address 0x%08lx\n", sysreg_read(TLBEAR)); break; } printf(" pc: %08lx lr: %08lx sp: %08lx r12: %08lx\n", regs->pc, regs->lr, regs->sp, regs->r12); printf(" r11: %08lx r10: %08lx r9: %08lx r8: %08lx\n", regs->r11, regs->r10, regs->r9, regs->r8); printf(" r7: %08lx r6: %08lx r5: %08lx r4: %08lx\n", regs->r7, regs->r6, regs->r5, regs->r4); printf(" r3: %08lx r2: %08lx r1: %08lx r0: %08lx\n", regs->r3, regs->r2, regs->r1, regs->r0); printf("Flags: %c%c%c%c%c\n", regs->sr & SR_Q ? 'Q' : 'q', regs->sr & SR_V ? 'V' : 'v', regs->sr & SR_N ? 'N' : 'n', regs->sr & SR_Z ? 'Z' : 'z', regs->sr & SR_C ? 'C' : 'c'); printf("Mode bits: %c%c%c%c%c%c%c%c%c\n", regs->sr & SR_H ? 'H' : 'h', regs->sr & SR_R ? 'R' : 'r', regs->sr & SR_J ? 'J' : 'j', regs->sr & SR_EM ? 'E' : 'e', regs->sr & SR_I3M ? '3' : '.', regs->sr & SR_I2M ? '2' : '.', regs->sr & SR_I1M ? '1' : '.', regs->sr & SR_I0M ? '0' : '.', regs->sr & SR_GM ? 'G' : 'g'); mode = (regs->sr >> SYSREG_M0_OFFSET) & 7; printf("CPU Mode: %s\n", cpu_modes[mode]); /* Avoid exception loops */ if (regs->sp < (gd->stack_end - CONFIG_STACKSIZE) || regs->sp >= gd->stack_end) printf("\nStack pointer seems bogus, won't do stack dump\n"); else dump_mem("\nStack: ", regs->sp, gd->stack_end); panic("Unhandled exception\n"); }