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https://github.com/brain-hackers/u-boot-brain
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130845bac1
In order to remove the arch-specific ifdefs around initr_trap, introduce arch_initr_trap weak initcall. Implementations for ppc/m68k/mips have been moved to arch/<arch>/lib/traps.c Default implementation is a nop stub. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2003
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* Josef Baumgartner <josef.baumgartner@telex.de>
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*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#include <common.h>
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#include <init.h>
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#include <watchdog.h>
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#include <command.h>
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#include <asm/processor.h>
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#include <asm/ptrace.h>
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extern void _exc_handler(void);
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extern void _int_handler(void);
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static void show_frame(struct pt_regs *fp)
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{
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printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2,
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fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8));
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printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp);
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printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n",
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fp->d0, fp->d1, fp->d2, fp->d3);
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printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n",
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fp->d4, fp->d5, fp->d6, fp->d7);
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printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n",
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fp->a0, fp->a1, fp->a2, fp->a3);
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printf ("A4: %08lx A5: %08lx A6: %08lx\n",
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fp->a4, fp->a5, fp->a6);
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}
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void exc_handler(struct pt_regs *fp) {
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printf("\n\n*** Unexpected exception ***\n");
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show_frame (fp);
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printf("\n*** Please Reset Board! ***\n");
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for(;;);
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}
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static void trap_init(ulong value) {
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unsigned long *vec = (ulong *)value;
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int i;
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for(i = 2; i < 25; i++) {
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vec[i] = (unsigned long)_exc_handler;
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}
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for(i = 25; i < 32; i++) {
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vec[i] = (unsigned long)_int_handler;
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}
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for(i = 32; i < 64; i++) {
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vec[i] = (unsigned long)_exc_handler;
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}
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for(i = 64; i < 256; i++) {
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vec[i] = (unsigned long)_int_handler;
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}
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setvbr(value); /* set vector base register to new table */
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}
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int arch_initr_trap(void)
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{
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trap_init(CONFIG_SYS_SDRAM_BASE);
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return 0;
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}
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