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author | Paul Mundt <lethal@linux-sh.org> | 2009-05-08 17:41:59 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2009-05-08 17:41:59 +0900 |
commit | 7d170b1bc540a1d83098a9f27cf4939e026fda81 (patch) | |
tree | 482234e9271e09bcd630d3d0b8450ab914da2c88 /arch/sh/boards/mach-cayman | |
parent | ef9f89996e450e9686816b6fc1e34d7b9a65766c (diff) | |
download | op-kernel-dev-7d170b1bc540a1d83098a9f27cf4939e026fda81.zip op-kernel-dev-7d170b1bc540a1d83098a9f27cf4939e026fda81.tar.gz |
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/boards/mach-cayman')
-rw-r--r-- | arch/sh/boards/mach-cayman/Makefile | 2 | ||||
-rw-r--r-- | arch/sh/boards/mach-cayman/panic.c | 49 |
2 files changed, 50 insertions, 1 deletions
diff --git a/arch/sh/boards/mach-cayman/Makefile b/arch/sh/boards/mach-cayman/Makefile index cafe1ac3..00fa3ea 100644 --- a/arch/sh/boards/mach-cayman/Makefile +++ b/arch/sh/boards/mach-cayman/Makefile @@ -1,4 +1,4 @@ # # Makefile for the Hitachi Cayman specific parts of the kernel # -obj-y := setup.o irq.o +obj-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 0000000..d1e6730 --- /dev/null +++ b/arch/sh/boards/mach-cayman/panic.c @@ -0,0 +1,49 @@ +/* + * 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(); + } +} |