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bf9e3b38 WD |
1 | /* |
2 | * (C) Copyright 2003 | |
3 | * Josef Baumgartner <josef.baumgartner@telex.de> | |
4 | * | |
5 | * (C) Copyright 2000 | |
6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | #include <common.h> | |
28 | #include <watchdog.h> | |
29 | #include <command.h> | |
30 | #include <asm/processor.h> | |
31 | ||
32 | ||
33 | extern void _exc_handler(void); | |
34 | extern void _int_handler(void); | |
35 | ||
36 | static void show_frame(struct pt_regs *fp) | |
37 | { | |
38 | printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2, | |
39 | fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8)); | |
40 | printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp); | |
41 | printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n", | |
42 | fp->d0, fp->d1, fp->d2, fp->d3); | |
43 | printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n", | |
44 | fp->d4, fp->d5, fp->d6, fp->d7); | |
45 | printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n", | |
46 | fp->a0, fp->a1, fp->a2, fp->a3); | |
47 | printf ("A4: %08lx A5: %08lx A6: %08lx\n", | |
48 | fp->a4, fp->a5, fp->a6); | |
49 | } | |
50 | ||
51 | void exc_handler(struct pt_regs *fp) { | |
52 | printf("\n\n*** Unexpected exception ***\n"); | |
53 | show_frame (fp); | |
54 | printf("\n*** Please Reset Board! ***\n"); | |
55 | for(;;); | |
56 | } | |
57 | ||
58 | void trap_init(ulong value) { | |
59 | unsigned long *vec = (ulong *)value; | |
60 | int i; | |
61 | ||
62 | for(i = 2; i < 25; i++) { | |
63 | vec[i] = (unsigned long)_exc_handler; | |
64 | } | |
65 | for(i = 25; i < 32; i++) { | |
66 | vec[i] = (unsigned long)_int_handler; | |
67 | } | |
68 | for(i = 32; i < 64; i++) { | |
69 | vec[i] = (unsigned long)_exc_handler; | |
70 | } | |
71 | for(i = 64; i < 256; i++) { | |
72 | vec[i] = (unsigned long)_int_handler; | |
73 | } | |
74 | ||
75 | setvbr(value); /* set vector base register to new table */ | |
76 | } |