blob: 0672685cd024ba80e470dcd930b85b0d6f56e54f [file] [log] [blame]
Wolfgang Denk64702552006-10-24 14:27:35 +02001/*
2 * Copyright (C) 2005-2006 Atmel Corporation
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22#include <common.h>
23
24#include <asm/sysreg.h>
25#include <asm/ptrace.h>
26
Haavard Skinnemoenabf19bf2006-11-20 15:53:10 +010027DECLARE_GLOBAL_DATA_PTR;
28
Wolfgang Denk64702552006-10-24 14:27:35 +020029static const char * const cpu_modes[8] = {
30 "Application", "Supervisor", "Interrupt level 0", "Interrupt level 1",
31 "Interrupt level 2", "Interrupt level 3", "Exception", "NMI"
32};
33
34static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
35{
36 unsigned long p;
37 int i;
38
39 printf("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
40
41 for (p = bottom & ~31; p < top; ) {
42 printf("%04lx: ", p & 0xffff);
43
44 for (i = 0; i < 8; i++, p += 4) {
45 unsigned int val;
46
47 if (p < bottom || p >= top)
48 printf(" ");
49 else {
50 val = *(unsigned long *)p;
51 printf("%08x ", val);
52 }
53 }
54 printf("\n");
55 }
56}
57
58void do_unknown_exception(unsigned int ecr, struct pt_regs *regs)
59{
60 unsigned int mode;
61
62 printf("\n *** Unhandled exception %u at PC=0x%08lx\n", ecr, regs->pc);
63
64 switch (ecr) {
65 case ECR_BUS_ERROR_WRITE:
66 case ECR_BUS_ERROR_READ:
67 printf("Bus error at address 0x%08lx\n",
68 sysreg_read(BEAR));
69 break;
70 case ECR_TLB_MULTIPLE:
71 case ECR_ADDR_ALIGN_X:
72 case ECR_PROTECTION_X:
73 case ECR_ADDR_ALIGN_R:
74 case ECR_ADDR_ALIGN_W:
75 case ECR_PROTECTION_R:
76 case ECR_PROTECTION_W:
77 case ECR_DTLB_MODIFIED:
78 case ECR_TLB_MISS_X:
79 case ECR_TLB_MISS_R:
80 case ECR_TLB_MISS_W:
81 printf("MMU exception at address 0x%08lx\n",
82 sysreg_read(TLBEAR));
83 break;
84 }
85
86 printf(" pc: %08lx lr: %08lx sp: %08lx r12: %08lx\n",
87 regs->pc, regs->lr, regs->sp, regs->r12);
88 printf(" r11: %08lx r10: %08lx r9: %08lx r8: %08lx\n",
89 regs->r11, regs->r10, regs->r9, regs->r8);
90 printf(" r7: %08lx r6: %08lx r5: %08lx r4: %08lx\n",
91 regs->r7, regs->r6, regs->r5, regs->r4);
92 printf(" r3: %08lx r2: %08lx r1: %08lx r0: %08lx\n",
93 regs->r3, regs->r2, regs->r1, regs->r0);
94 printf("Flags: %c%c%c%c%c\n",
95 regs->sr & SR_Q ? 'Q' : 'q',
96 regs->sr & SR_V ? 'V' : 'v',
97 regs->sr & SR_N ? 'N' : 'n',
98 regs->sr & SR_Z ? 'Z' : 'z',
99 regs->sr & SR_C ? 'C' : 'c');
100 printf("Mode bits: %c%c%c%c%c%c%c%c%c\n",
101 regs->sr & SR_H ? 'H' : 'h',
102 regs->sr & SR_R ? 'R' : 'r',
103 regs->sr & SR_J ? 'J' : 'j',
104 regs->sr & SR_EM ? 'E' : 'e',
105 regs->sr & SR_I3M ? '3' : '.',
106 regs->sr & SR_I2M ? '2' : '.',
107 regs->sr & SR_I1M ? '1' : '.',
108 regs->sr & SR_I0M ? '0' : '.',
109 regs->sr & SR_GM ? 'G' : 'g');
110 mode = (regs->sr >> SYSREG_M0_OFFSET) & 7;
111 printf("CPU Mode: %s\n", cpu_modes[mode]);
112
113 /* Avoid exception loops */
Haavard Skinnemoenabf19bf2006-11-20 15:53:10 +0100114 if (regs->sp < CFG_SDRAM_BASE || regs->sp >= gd->stack_end)
Wolfgang Denk64702552006-10-24 14:27:35 +0200115 printf("\nStack pointer seems bogus, won't do stack dump\n");
116 else
Haavard Skinnemoenabf19bf2006-11-20 15:53:10 +0100117 dump_mem("\nStack: ", regs->sp, gd->stack_end);
Wolfgang Denk64702552006-10-24 14:27:35 +0200118
119 panic("Unhandled exception\n");
120}