diff options
Diffstat (limited to 'arch/sh/boards/mach-cayman/panic.c')
-rw-r--r-- | arch/sh/boards/mach-cayman/panic.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-cayman/panic.c b/arch/sh/boards/mach-cayman/panic.c new file mode 100644 index 000000000000..d1e67306d07c --- /dev/null +++ b/arch/sh/boards/mach-cayman/panic.c | |||
@@ -0,0 +1,49 @@ | |||
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 <linux/io.h> | ||
11 | #include <cpu/registers.h> | ||
12 | |||
13 | /* THIS IS A PHYSICAL ADDRESS */ | ||
14 | #define HDSP2534_ADDR (0x04002100) | ||
15 | |||
16 | static void poor_mans_delay(void) | ||
17 | { | ||
18 | int i; | ||
19 | |||
20 | for (i = 0; i < 2500000; i++) | ||
21 | cpu_relax(); | ||
22 | } | ||
23 | |||
24 | static void show_value(unsigned long x) | ||
25 | { | ||
26 | int i; | ||
27 | unsigned nibble; | ||
28 | for (i = 0; i < 8; i++) { | ||
29 | nibble = ((x >> (i * 4)) & 0xf); | ||
30 | |||
31 | __raw_writeb(nibble + ((nibble > 9) ? 55 : 48), | ||
32 | HDSP2534_ADDR + 0xe0 + ((7 - i) << 2)); | ||
33 | } | ||
34 | } | ||
35 | |||
36 | void | ||
37 | panic_handler(unsigned long panicPC, unsigned long panicSSR, | ||
38 | unsigned long panicEXPEVT) | ||
39 | { | ||
40 | while (1) { | ||
41 | /* This piece of code displays the PC on the LED display */ | ||
42 | show_value(panicPC); | ||
43 | poor_mans_delay(); | ||
44 | show_value(panicSSR); | ||
45 | poor_mans_delay(); | ||
46 | show_value(panicEXPEVT); | ||
47 | poor_mans_delay(); | ||
48 | } | ||
49 | } | ||