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authorPaul Mundt <lethal@linux-sh.org>2009-05-08 04:41:59 -0400
committerPaul Mundt <lethal@linux-sh.org>2009-05-08 04:41:59 -0400
commit7d170b1bc540a1d83098a9f27cf4939e026fda81 (patch)
tree482234e9271e09bcd630d3d0b8450ab914da2c88 /arch/sh
parentef9f89996e450e9686816b6fc1e34d7b9a65766c (diff)
sh: Move out cayman-specific panic handler code to its own file.
This moves out the cayman-specific panic handler code to a better location, and leaves the generic implementation a simple stub that is still used under emulation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/boards/mach-cayman/Makefile2
-rw-r--r--arch/sh/boards/mach-cayman/panic.c49
-rw-r--r--arch/sh/lib64/panic.c43
3 files changed, 50 insertions, 44 deletions
diff --git a/arch/sh/boards/mach-cayman/Makefile b/arch/sh/boards/mach-cayman/Makefile
index cafe1ac3b29c..00fa3eaecb1b 100644
--- a/arch/sh/boards/mach-cayman/Makefile
+++ b/arch/sh/boards/mach-cayman/Makefile
@@ -1,4 +1,4 @@
1# 1#
2# Makefile for the Hitachi Cayman specific parts of the kernel 2# Makefile for the Hitachi Cayman specific parts of the kernel
3# 3#
4obj-y := setup.o irq.o 4obj-y := setup.o irq.o panic.o
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
16static void poor_mans_delay(void)
17{
18 int i;
19
20 for (i = 0; i < 2500000; i++)
21 cpu_relax();
22}
23
24static 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
36void
37panic_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}
diff --git a/arch/sh/lib64/panic.c b/arch/sh/lib64/panic.c
index da32ba7b5fcc..38c954e04f6a 100644
--- a/arch/sh/lib64/panic.c
+++ b/arch/sh/lib64/panic.c
@@ -6,53 +6,10 @@
6 * for more details. 6 * for more details.
7 */ 7 */
8 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
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 9void
40panic_handler(unsigned long panicPC, unsigned long panicSSR, 10panic_handler(unsigned long panicPC, unsigned long panicSSR,
41 unsigned long panicEXPEVT) 11 unsigned long panicEXPEVT)
42{ 12{
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 */ 13 /* Never return from the panic handler */
56 for (;;) ; 14 for (;;) ;
57
58} 15}