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 <cpu/registers.h> 12 13 /* THIS IS A PHYSICAL ADDRESS */ 14 #define HDSP2534_ADDR (0x04002100) 15 16 #ifdef CONFIG_SH_CAYMAN 17 poor_mans_delay(void)18static void poor_mans_delay(void) 19 { 20 int i; 21 for (i = 0; i < 2500000; i++) { 22 } /* poor man's delay */ 23 } 24 show_value(unsigned long x)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 39 void panic_handler(unsigned long panicPC,unsigned long panicSSR,unsigned long panicEXPEVT)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