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 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <common.h> 12 #include <watchdog.h> 13 #include <command.h> 14 #include <asm/processor.h> 15 16 17 extern void _exc_handler(void); 18 extern void _int_handler(void); 19 20 static void show_frame(struct pt_regs *fp) 21 { 22 printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2, 23 fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8)); 24 printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp); 25 printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n", 26 fp->d0, fp->d1, fp->d2, fp->d3); 27 printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n", 28 fp->d4, fp->d5, fp->d6, fp->d7); 29 printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n", 30 fp->a0, fp->a1, fp->a2, fp->a3); 31 printf ("A4: %08lx A5: %08lx A6: %08lx\n", 32 fp->a4, fp->a5, fp->a6); 33 } 34 35 void exc_handler(struct pt_regs *fp) { 36 printf("\n\n*** Unexpected exception ***\n"); 37 show_frame (fp); 38 printf("\n*** Please Reset Board! ***\n"); 39 for(;;); 40 } 41 42 void trap_init(ulong value) { 43 unsigned long *vec = (ulong *)value; 44 int i; 45 46 for(i = 2; i < 25; i++) { 47 vec[i] = (unsigned long)_exc_handler; 48 } 49 for(i = 25; i < 32; i++) { 50 vec[i] = (unsigned long)_int_handler; 51 } 52 for(i = 32; i < 64; i++) { 53 vec[i] = (unsigned long)_exc_handler; 54 } 55 for(i = 64; i < 256; i++) { 56 vec[i] = (unsigned long)_int_handler; 57 } 58 59 setvbr(value); /* set vector base register to new table */ 60 } 61