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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
+50
-44
+1
-1
arch/sh/boards/mach-cayman/Makefile
+1
-1
arch/sh/boards/mach-cayman/Makefile
+49
arch/sh/boards/mach-cayman/panic.c
+49
arch/sh/boards/mach-cayman/panic.c
···
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/*
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* Copyright (C) 2003 Richard Curnow, SuperH UK Limited
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <cpu/registers.h>
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/* THIS IS A PHYSICAL ADDRESS */
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#define HDSP2534_ADDR (0x04002100)
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static void poor_mans_delay(void)
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{
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int i;
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+
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for (i = 0; i < 2500000; i++)
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cpu_relax();
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}
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static void show_value(unsigned long x)
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{
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int i;
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unsigned nibble;
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for (i = 0; i < 8; i++) {
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nibble = ((x >> (i * 4)) & 0xf);
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__raw_writeb(nibble + ((nibble > 9) ? 55 : 48),
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HDSP2534_ADDR + 0xe0 + ((7 - i) << 2));
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}
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}
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void
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panic_handler(unsigned long panicPC, unsigned long panicSSR,
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unsigned long panicEXPEVT)
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{
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while (1) {
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/* This piece of code displays the PC on the LED display */
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show_value(panicPC);
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poor_mans_delay();
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show_value(panicSSR);
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poor_mans_delay();
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show_value(panicEXPEVT);
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poor_mans_delay();
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}
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}
-43
arch/sh/lib64/panic.c
-43
arch/sh/lib64/panic.c
···
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* for more details.
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*/
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#include <linux/kernel.h>
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#include <asm/io.h>
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#include <cpu/registers.h>
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/* THIS IS A PHYSICAL ADDRESS */
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#define HDSP2534_ADDR (0x04002100)
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#ifdef CONFIG_SH_CAYMAN
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static void poor_mans_delay(void)
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{
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int i;
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for (i = 0; i < 2500000; i++) {
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} /* poor man's delay */
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}
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static void show_value(unsigned long x)
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{
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int i;
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unsigned nibble;
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for (i = 0; i < 8; i++) {
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nibble = ((x >> (i * 4)) & 0xf);
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ctrl_outb(nibble + ((nibble > 9) ? 55 : 48),
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HDSP2534_ADDR + 0xe0 + ((7 - i) << 2));
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}
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}
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#endif
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void
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panic_handler(unsigned long panicPC, unsigned long panicSSR,
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unsigned long panicEXPEVT)
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{
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#ifdef CONFIG_SH_CAYMAN
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while (1) {
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/* This piece of code displays the PC on the LED display */
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show_value(panicPC);
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poor_mans_delay();
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show_value(panicSSR);
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poor_mans_delay();
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show_value(panicEXPEVT);
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poor_mans_delay();
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}
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#endif
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/* Never return from the panic handler */
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for (;;) ;
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}