blob: 0365de3a0b46ac7dccecebe8274dff55381405a1 [file] [log] [blame]
Michal Simek76316a32007-03-11 13:42:58 +01001/*
2 * (C) Copyright 2007 Michal Simek
3 *
4 * Michal SIMEK <monstr@monstr.eu>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#include <common.h>
Michal Simek1a50f1642007-05-08 14:52:52 +020026#include <asm/asm.h>
Michal Simek76316a32007-03-11 13:42:58 +010027
28void _hw_exception_handler (void)
29{
30 int address = 0;
31 int state = 0;
32 /* loading address of exception EAR */
Michal Simeke69f66c2007-05-08 15:57:43 +020033 MFS (address, rear);
Michal Simek76316a32007-03-11 13:42:58 +010034 /* loading excetpion state register ESR */
Michal Simeke69f66c2007-05-08 15:57:43 +020035 MFS (state, resr);
Michal Simek76316a32007-03-11 13:42:58 +010036 printf ("Hardware exception at 0x%x address\n", address);
37 switch (state & 0x1f) { /* mask on exception cause */
38 case 0x1:
39 puts ("Unaligned data access exception\n");
40 break;
41 case 0x2:
42 puts ("Illegal op-code exception\n");
43 break;
44 case 0x3:
45 puts ("Instruction bus error exception\n");
46 break;
47 case 0x4:
48 puts ("Data bus error exception\n");
49 break;
50 case 0x5:
51 puts ("Divide by zero exception\n");
52 break;
Michal Simek1a50f1642007-05-08 14:52:52 +020053#ifdef MICROBLAZE_V5
54 case 0x1000:
55 puts ("Exception in delay slot\n");
56 break;
57#endif
Michal Simek76316a32007-03-11 13:42:58 +010058 default:
59 puts ("Undefined cause\n");
60 break;
61 }
62 printf ("Unaligned %sword access\n", ((state & 0x800) ? "" : "half"));
63 printf ("Unaligned %s access\n", ((state & 0x400) ? "store" : "load"));
64 printf ("Register R%x\n", (state & 0x3E) >> 5);
65 hang ();
66}
67
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020068#ifdef CONFIG_SYS_USR_EXCEP
Michal Simek76316a32007-03-11 13:42:58 +010069void _exception_handler (void)
70{
71 puts ("User vector_exception\n");
72 hang ();
73}
74#endif