ich watchdog vs intel smm code

Andriy Gapon avg at icyb.net.ua
Mon Jan 19 04:37:17 PST 2009


on 19/01/2009 14:27 Pegasus Mc Cleaft said the following:
> 
> ----- Original Message ----- From: "Andriy Gapon" <avg at 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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