[coreboot] [PATCH] Halt TCO timer on Intel 3100 chipset

Peter Stuge peter at stuge.se
Tue Apr 8 01:13:26 CEST 2008

On Mon, Apr 07, 2008 at 03:55:41PM -0700, Ed Swierk wrote:
> On Mon, Apr 7, 2008 at 2:03 PM, Peter Stuge <peter at stuge.se> wrote:
> >  There are some technical issues..
> >
> >  ..specifically coreboot doesn't handle interrupts.
> Well, the TCO watchdog can reboot the system without software
> handling any interrupts.

True, but it's not very easy to regularly poke the timer without an
interrupt - or the code will be full of try_poke() every other line.

> It would indeed be nice if boards with normal+fallback images allowed
> watchdog to reboot with the fallback image automatically if the normal
> image fails. If the normal image doesn't boot far enough to call
> i3100_halt_tco_timer(), this is exactly what will happen.

Yes, I like the idea too. But it may not be so easy to implement.
That shouldn't scare anyone off of course. :)


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