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[ARM] 3132/1: S3C2410 - reset on decompression error

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Patch from Ben Dooks

Force a watchdog reset if the system fails to
decompress properly.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ben Dooks 2005-11-08 22:43:05 +00:00 committed by Russell King
parent 4c18ad2049
commit f8c905d368
3 changed files with 34 additions and 2 deletions
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6
arch/arm/boot/compressed/misc.c
View file

@ -283,8 +283,14 @@ void flush_window(void)
putstr(".");
}
#ifndef arch_error
#define arch_error(x)
#endif
static void error(char *x)
{
arch_error(x);
putstr("\n\n");
putstr(x);
putstr("\n\n -- System halted");

8
arch/arm/mach-s3c2410/Kconfig
View file

@ -121,6 +121,14 @@ config S3C2410_BOOT_WATCHDOG
system resets depends on the value of PCLK. The timeout on an
200MHz s3c2410 should be about 30 seconds.
config S3C2410_BOOT_ERROR_RESET
bool "S3C2410 Reboot on decompression error"
depends on ARCH_S3C2410
help
Say y here to use the watchdog to reset the system if the
kernel decompressor detects an error during decompression.
comment "S3C2410 Setup"
config S3C2410_DMA

22
include/asm-arm/arch-s3c2410/uncompress.h
View file

@ -116,6 +116,8 @@ putstr(const char *ptr)
}
}
#define __raw_writel(d,ad) do { *((volatile unsigned int *)(ad)) = (d); } while(0)
/* CONFIG_S3C2410_BOOT_WATCHDOG
*
* Simple boot-time watchdog setup, to reboot the system if there is
@ -126,8 +128,6 @@ putstr(const char *ptr)
#define WDOG_COUNT (0xff00)
#define __raw_writel(d,ad) do { *((volatile unsigned int *)(ad)) = (d); } while(0)
static inline void arch_decomp_wdog(void)
{
__raw_writel(WDOG_COUNT, S3C2410_WTCNT);
@ -145,6 +145,24 @@ static void arch_decomp_wdog_start(void)
#define arch_decomp_wdog()
#endif
#ifdef CONFIG_S3C2410_BOOT_ERROR_RESET
static void arch_decomp_error(const char *x)
{
putstr("\n\n");
putstr(x);
putstr("\n\n -- System resetting\n");
__raw_writel(0x4000, S3C2410_WTDAT);
__raw_writel(0x4000, S3C2410_WTCNT);
__raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x40), S3C2410_WTCON);
while(1);
}
#define arch_error arch_decomp_error
#endif
static void error(char *err);
static void