Re: Sun Watchdog Reset

Pavel Machek (
Tue, 29 Dec 1998 15:12:42 +0100


> Can anyone explain to me how the watchdog reset works on a sun running linux?
> I am getting them on a piece of non-sun hardware (Meiko dino1) that I'm
> trying to get working with linux. Basically I have made some changes to get
> past the custom boot and idprom and have it pretending it's a "sun4m" (which I
> think is more or less correct). We get part way through the boot-up sequence,
> to the point where the two CPU's are found, and then get bumped back into the
> monitor with "Watchdog Reset".
> Presumably this is a timer tied to a hardware reset line? If so, where do we
> feed the timer new values?
> Clue please? :-)

Watchdog reset is pretty common error on sun. It happens also for me
on original sun4. If you do equivalent of triple-fault of something
like that, it will just report "watchdog reset". Talk to any sparc
people directly to get details. (No, I'm not sparc person myself.)


I'm really 	   Pavel
Look at ;-).

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