Matthew Jacob <m...@feral.com> writes: > Xin LI <delp...@delphij.net> writes: > > It seems that ICH10R's watchdog is supported by ichwd(4) but > > Supermicro BIOS needs some special treatments which is beyond what > > ichwd(4) and watchdogd(8) would do... > What do mean "special" treatment?
The watchdog timer can be disabled in hardware (by pulling the speaker pin high during boot, IIRC). Even if it is enabled, it can be caught and ignored by the SMM firmware. Some BIOSes have options to enable or disable the watchdog timer, which I assume means that they flip a bit that tells the firmware to either catch it or pass it through. Unfortunately, although it is possible for the ichwd driver to detect programatically (by checking an MSR) if the watchdog timer is disabled in hardware, it is not possible to determine whether it is disabled in firmware. DES -- Dag-Erling Smørgrav - d...@des.no _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
