1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2003 4 * Josef Baumgartner <josef.baumgartner@telex.de> 5 * 6 * (C) Copyright 2000 7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 8 */ 9 10 #include <common.h> 11 #include <watchdog.h> 12 #include <command.h> 13 #include <asm/processor.h> 14 15 16 extern void _exc_handler(void); 17 extern void _int_handler(void); 18 19 static void show_frame(struct pt_regs *fp) 20 { 21 printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2, 22 fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8)); 23 printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp); 24 printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n", 25 fp->d0, fp->d1, fp->d2, fp->d3); 26 printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n", 27 fp->d4, fp->d5, fp->d6, fp->d7); 28 printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n", 29 fp->a0, fp->a1, fp->a2, fp->a3); 30 printf ("A4: %08lx A5: %08lx A6: %08lx\n", 31 fp->a4, fp->a5, fp->a6); 32 } 33 34 void exc_handler(struct pt_regs *fp) { 35 printf("\n\n*** Unexpected exception ***\n"); 36 show_frame (fp); 37 printf("\n*** Please Reset Board! ***\n"); 38 for(;;); 39 } 40 41 void trap_init(ulong value) { 42 unsigned long *vec = (ulong *)value; 43 int i; 44 45 for(i = 2; i < 25; i++) { 46 vec[i] = (unsigned long)_exc_handler; 47 } 48 for(i = 25; i < 32; i++) { 49 vec[i] = (unsigned long)_int_handler; 50 } 51 for(i = 32; i < 64; i++) { 52 vec[i] = (unsigned long)_exc_handler; 53 } 54 for(i = 64; i < 256; i++) { 55 vec[i] = (unsigned long)_int_handler; 56 } 57 58 setvbr(value); /* set vector base register to new table */ 59 } 60