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| author | Ben Dooks <ben-linux@fluff.org> | 2005-11-08 22:43:05 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-08 22:43:05 +0000 |
| commit | f8c905d368c757e2c96db293a472a31abcf4b147 (patch) | |
| tree | ff762892db823ec597eba3cd895575c4d09d7762 | |
| parent | 4c18ad20493c9eac6e7d0c2a05156acfc02d9b6b (diff) | |
| download | kernel_samsung_aries-f8c905d368c757e2c96db293a472a31abcf4b147.zip kernel_samsung_aries-f8c905d368c757e2c96db293a472a31abcf4b147.tar.gz kernel_samsung_aries-f8c905d368c757e2c96db293a472a31abcf4b147.tar.bz2 | |
[ARM] 3132/1: S3C2410 - reset on decompression error
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>
| -rw-r--r-- | arch/arm/boot/compressed/misc.c | 6 | ||||
| -rw-r--r-- | arch/arm/mach-s3c2410/Kconfig | 8 | ||||
| -rw-r--r-- | include/asm-arm/arch-s3c2410/uncompress.h | 22 |
3 files changed, 34 insertions, 2 deletions
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c index 50f13ee..5ab9458 100644 --- a/arch/arm/boot/compressed/misc.c +++ b/arch/arm/boot/compressed/misc.c @@ -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"); diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig index c796bcd..0b9d7ca 100644 --- a/arch/arm/mach-s3c2410/Kconfig +++ b/arch/arm/mach-s3c2410/Kconfig @@ -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 diff --git a/include/asm-arm/arch-s3c2410/uncompress.h b/include/asm-arm/arch-s3c2410/uncompress.h index d7a4a83..ddd1578 100644 --- a/include/asm-arm/arch-s3c2410/uncompress.h +++ b/include/asm-arm/arch-s3c2410/uncompress.h @@ -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 |