blob: c9eb1cb50d9706c3322e4b548d97d471c27b6518 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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}