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Paul Mundt
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May 8, 2009
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--- | ||
refs/heads/master: ef9f89996e450e9686816b6fc1e34d7b9a65766c | ||
refs/heads/master: 7d170b1bc540a1d83098a9f27cf4939e026fda81 |
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# | ||
# Makefile for the Hitachi Cayman specific parts of the kernel | ||
# | ||
obj-y := setup.o irq.o | ||
obj-y := setup.o irq.o panic.o |
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/* | ||
* 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. | ||
*/ | ||
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#include <linux/kernel.h> | ||
#include <linux/io.h> | ||
#include <cpu/registers.h> | ||
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/* THIS IS A PHYSICAL ADDRESS */ | ||
#define HDSP2534_ADDR (0x04002100) | ||
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static void poor_mans_delay(void) | ||
{ | ||
int i; | ||
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for (i = 0; i < 2500000; i++) | ||
cpu_relax(); | ||
} | ||
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static void show_value(unsigned long x) | ||
{ | ||
int i; | ||
unsigned nibble; | ||
for (i = 0; i < 8; i++) { | ||
nibble = ((x >> (i * 4)) & 0xf); | ||
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__raw_writeb(nibble + ((nibble > 9) ? 55 : 48), | ||
HDSP2534_ADDR + 0xe0 + ((7 - i) << 2)); | ||
} | ||
} | ||
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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(); | ||
} | ||
} |
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