-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 2010/06/30 14:49, Dag-Erling Smørgrav wrote: > Matthew Jacob <[email protected]> writes: >> Xin LI <[email protected]> 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.
Hmm... Sorry I think I didn't described the behavior accurately. Currently if I enable the "Watch Dog" option in BIOS, the system reboots after ~5 mins regardless whether I have ichwd(4) and watchdogd(8) loaded. Looking at the boot -v output, ichwd would disable the watchdog and watchdogd would enable it, pat it as expected, but this won't stop the system from rebooting by the watchdog. Cheers, - -- Xin LI <[email protected]> http://www.delphij.net/ FreeBSD - The Power to Serve! Live free or die -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (FreeBSD) iQEcBAEBCAAGBQJMK788AAoJEATO+BI/yjfBPHkH/jWIZEX9/tmL50AgXzkfEEXU zNn+d2CAGA/+6wUt73aizKq1dk0eIz5ze9V+RR59cjJH4ftXLg2Tn34Ed2OYNTZZ JxFP7go4RIO1P5a3WIM6A8MVykUCIv+JhfXR3yG8Fy0h9DbmL2zwLPlqYPLBAXOK y+2DKYXqmA94qetPmrrm8b4WDRD9a7dwH26E+D8AslPJcABynjrdv0Ou8MLKC3g7 K+3YcgaCP2dowyy0gJzfNi2WTJyPmEtLsmFGzw14enP5tpDNU0t6yR4rkPbHkQSM 6BRF7gwZiAQoa4Az/S72RvjVR+OXehJGNNJLM6YRTH4fB2QiZ3YdmJ3WyeUE/TU= =EA7X -----END PGP SIGNATURE----- _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
