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sh: Move out cayman-specific panic handler code to its own file.

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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>
This commit is contained in:
Paul Mundt 2009-05-08 17:41:59 +09:00
parent ef9f89996e
commit 7d170b1bc5
3 changed files with 50 additions and 44 deletions
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2
arch/sh/boards/mach-cayman/Makefile
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@ -1,4 +1,4 @@
# #
# Makefile for the Hitachi Cayman specific parts of the kernel # Makefile for the Hitachi Cayman specific parts of the kernel
# #
obj-y := setup.o irq.o obj-y := setup.o irq.o panic.o

49
arch/sh/boards/mach-cayman/panic.c Normal file
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@ -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();
}
}

43
arch/sh/lib64/panic.c
View file

@ -6,53 +6,10 @@
* for more details. * for more details.
*/ */
#include <linux/kernel.h>
#include <asm/io.h>
#include <cpu/registers.h>
/* THIS IS A PHYSICAL ADDRESS */
#define HDSP2534_ADDR (0x04002100)
#ifdef CONFIG_SH_CAYMAN
static void poor_mans_delay(void)
{
int i;
for (i = 0; i < 2500000; i++) {
} /* poor man's delay */
}
static void show_value(unsigned long x)
{
int i;
unsigned nibble;
for (i = 0; i < 8; i++) {
nibble = ((x >> (i * 4)) & 0xf);
ctrl_outb(nibble + ((nibble > 9) ? 55 : 48),
HDSP2534_ADDR + 0xe0 + ((7 - i) << 2));
}
}
#endif
void void
panic_handler(unsigned long panicPC, unsigned long panicSSR, panic_handler(unsigned long panicPC, unsigned long panicSSR,
unsigned long panicEXPEVT) unsigned long panicEXPEVT)
{ {
#ifdef CONFIG_SH_CAYMAN
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();
}
#endif
/* Never return from the panic handler */ /* Never return from the panic handler */
for (;;) ; for (;;) ;
} }