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CONFIG_ITCO_WDT: Intel TCO Timer/Watchdog

General informations

The Linux kernel configuration item CONFIG_ITCO_WDT has multiple definitions:

Intel TCO Timer/Watchdog found in drivers/char/watchdog/Kconfig

The configuration item CONFIG_ITCO_WDT:

Help text

Hardware driver for the intel TCO timer based watchdog devices. These drivers are included in the Intel 82801 I/O Controller Hub family (from ICH0 up to ICH8) and in the Intel 6300ESB controller hub.

The TCO (Total Cost of Ownership) timer is a watchdog timer that will reboot the machine after its second expiration. The expiration time can be configured with the "heartbeat" parameter.

On some motherboards the driver may fail to reset the chipset's NO_REBOOT flag which prevents the watchdog from rebooting the machine. If this is the case you will get a kernel message like "failed to reset NO_REBOOT flag, reboot disabled by hardware".

To compile this driver as a module, choose M here: the module will be called iTCO_wdt.

Intel TCO Timer/Watchdog found in drivers/watchdog/Kconfig

The configuration item CONFIG_ITCO_WDT:

Help text

Hardware driver for the intel TCO timer based watchdog devices. These drivers are included in the Intel 82801 I/O Controller Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB controller hub.

The TCO (Total Cost of Ownership) timer is a watchdog timer that will reboot the machine after its second expiration. The expiration time can be configured with the "heartbeat" parameter.

On some motherboards the driver may fail to reset the chipset's NO_REBOOT flag which prevents the watchdog from rebooting the machine. If this is the case you will get a kernel message like "failed to reset NO_REBOOT flag, reboot disabled by hardware".

To compile this driver as a module, choose M here: the module will be called iTCO_wdt.

Hardware

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