/* * Copyright (C) 2003 Richard Curnow, SuperH UK Limited * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/kernel.h> #include <linux/io.h> #include <cpu/registers.h> /* THIS IS A PHYSICAL ADDRESS */ #define HDSP2534_ADDR (0x04002100) static void poor_mans_delay(void) { int i; for (i = 0; i < 2500000; i++) cpu_relax(); } static void show_value(unsigned long x) { int i; unsigned nibble; for (i = 0; i < 8; i++) { nibble = ((x >> (i * 4)) & 0xf); __raw_writeb(nibble + ((nibble > 9) ? 55 : 48), HDSP2534_ADDR + 0xe0 + ((7 - i) << 2)); } } void panic_handler(unsigned long panicPC, unsigned long panicSSR, unsigned long panicEXPEVT) { while (1) { /* This piece of code displays the PC on the LED display */ show_value(panicPC); poor_mans_delay(); show_value(panicSSR); poor_mans_delay(); show_value(panicEXPEVT); poor_mans_delay(); } }