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
More information about the freebsd-hackers
mailing list