1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* (C) Copyright 2003
* Josef Baumgartner <josef.baumgartner@telex.de>
*
* (C) Copyright 2000
* 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
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <asm/processor.h>
extern void _exc_handler(void);
extern void _int_handler(void);
static void show_frame(struct pt_regs *fp)
{
printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2,
fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8));
printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp);
printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n",
fp->d0, fp->d1, fp->d2, fp->d3);
printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n",
fp->d4, fp->d5, fp->d6, fp->d7);
printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n",
fp->a0, fp->a1, fp->a2, fp->a3);
printf ("A4: %08lx A5: %08lx A6: %08lx\n",
fp->a4, fp->a5, fp->a6);
}
void exc_handler(struct pt_regs *fp) {
printf("\n\n*** Unexpected exception ***\n");
show_frame (fp);
printf("\n*** Please Reset Board! ***\n");
for(;;);
}
void trap_init(ulong value) {
unsigned long *vec = (ulong *)value;
int i;
for(i = 2; i < 25; i++) {
vec[i] = (unsigned long)_exc_handler;
}
for(i = 25; i < 32; i++) {
vec[i] = (unsigned long)_int_handler;
}
for(i = 32; i < 64; i++) {
vec[i] = (unsigned long)_exc_handler;
}
for(i = 64; i < 256; i++) {
vec[i] = (unsigned long)_int_handler;
}
setvbr(value); /* set vector base register to new table */
}
|
