1/* 2 * Copyright (C) 2003 Richard Curnow, SuperH UK Limited 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file "COPYING" in the main directory of this archive 6 * for more details. 7 */ 8 9#include <linux/kernel.h> 10#include <asm/io.h> 11#include <asm/registers.h> 12 13/* THIS IS A PHYSICAL ADDRESS */ 14#define HDSP2534_ADDR (0x04002100) 15 16#ifdef CONFIG_SH_CAYMAN 17 18static void poor_mans_delay(void) 19{ 20 int i; 21 for (i = 0; i < 2500000; i++) { 22 } /* poor man's delay */ 23} 24 25static void show_value(unsigned long x) 26{ 27 int i; 28 unsigned nibble; 29 for (i = 0; i < 8; i++) { 30 nibble = ((x >> (i * 4)) & 0xf); 31 32 ctrl_outb(nibble + ((nibble > 9) ? 55 : 48), 33 HDSP2534_ADDR + 0xe0 + ((7 - i) << 2)); 34 } 35} 36 37#endif 38 39void 40panic_handler(unsigned long panicPC, unsigned long panicSSR, 41 unsigned long panicEXPEVT) 42{ 43#ifdef CONFIG_SH_CAYMAN 44 while (1) { 45 /* This piece of code displays the PC on the LED display */ 46 show_value(panicPC); 47 poor_mans_delay(); 48 show_value(panicSSR); 49 poor_mans_delay(); 50 show_value(panicEXPEVT); 51 poor_mans_delay(); 52 } 53#endif 54 55 /* Never return from the panic handler */ 56 for (;;) ; 57 58} 59