text: /*
   * 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();
  	}
  }
  