[Skiboot] [PATCH 3/3] ipmi/wdt: Add ipmi watchdog timer support

[Benjamin Herrenschmidt]

On Thu, 2015-01-29 at 08:54 +0800, Jeremy Kerr wrote:
> Hi Ben,
> 
> > Bah, petitboot kernel will start it and that's it, once it's started,
> > it's started and if we kexec something tat doesn't support it we are
> > toast anyway
> 
> My plan is to have petitboot disable the watchdog timer just before
> kexec. This way, we don't export this "ABI" beyond the petitboot
> environment, which we'd have control of anyway.
> 
> The OS kernel can re-enable it if necessary, but isn't required to.

Which means that if it fails to boot, we have no watchdog... I don't
like this *that* much...

Can the watchdog be tied to an interrupt from the BMC ? Something we
know we will react to unless the kernel is dead ?

Ben.