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CONFIG_I810_TCO: Intel i8xx TCO timer / Watchdog

General informations

The Linux kernel configuration item CONFIG_I810_TCO:

Help text

Hardware driver for the TCO timer built into the Intel i8xx chipset family. 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 by commandline argument "i810_margin=<n>" where <n> is the counter initial value. It is decremented every 0.6 secs, the default is 50 which gives a timeout of 30 seconds and one minute until reset.

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 "i810tco init: failed to reset NO_REBOOT flag".

To compile this driver as a module, choose M here: the module will be called i810-tco.

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