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CONFIG_S3C2410_BOOT_WATCHDOG: S3C2410 Initialisation watchdog

General informations

The Linux kernel configuration item CONFIG_S3C2410_BOOT_WATCHDOG has multiple definitions:

S3C2410 Initialisation watchdog found in arch/arm/mach-s3c2410/Kconfig

The configuration item CONFIG_S3C2410_BOOT_WATCHDOG:

Help text

Say y to enable the watchdog during the kernel decompression stage. If the kernel fails to uncompress, then the watchdog will trigger a reset and the system should restart.

Although this uses the same hardware unit as the kernel watchdog driver, it is not a replacement for it. If you use this option, you will have to use the watchdg driver to either stop the timeout or restart it. If you do not, then your kernel will reboot after startup.

The driver uses a fixed timeout value, so the exact time till the system resets depends on the value of PCLK. The timeout on an 200MHz s3c2410 should be about 30 seconds.

S3C2410 Initialisation watchdog found in arch/arm/plat-s3c24xx/Kconfig

The configuration item CONFIG_S3C2410_BOOT_WATCHDOG:

Help text

Say y to enable the watchdog during the kernel decompression stage. If the kernel fails to uncompress, then the watchdog will trigger a reset and the system should restart.

Hardware

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