Date: Mon, 19 Jan 2009 14:37:09 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: Pegasus Mc Cleaft <ken@mthelicon.com> Cc: freebsd-hackers@freebsd.org, freebsd-acpi@freebsd.org Subject: Re: ich watchdog vs intel smm code Message-ID: <497473F5.4030506@icyb.net.ua> In-Reply-To: <F4CC115C017642A89A60B2215257C610@PegaPegII> References: <49746E05.1070109@icyb.net.ua> <F4CC115C017642A89A60B2215257C610@PegaPegII>
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on 19/01/2009 14:27 Pegasus Mc Cleaft said the following: > > ----- Original Message ----- From: "Andriy Gapon" <avg@icyb.net.ua> [snip] >> So, if we globally disable SMI, then the watchdog in ICH9 does indeed >> cause a reboot. Evidently this happens after the timer expires twice >> in row. [snip] > Mentioned in the datasheet for the ICH9, the speaker pin is used as a > configuration pin while reset it asserted. If a logic 1 is present on > this pin when reset is deasserted, the ICH9 chip locks out the ability > for software to enable the watchdog. With the ichwd driver for BSD, this > condition is announced with a message like "Watchdog present, but > disabled in BIOS". (Well.. something close to that) "ICH WDT present but disabled in BIOS or hardware" I believe your issue is quite a different one, it is older and known and explicitly reported by the driver. In this case the watchdog does work and does seem to generate SMI. -- Andriy Gapon
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