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 } 77