[SeaBIOS] [PATCH v2 00/19] SeaBIOS as Compatibility Support Module for UEFI/OVMF

[David Woodhouse]

On Fri, 2013-02-08 at 09:51 +0000, Ian Campbell wrote:
> I've not been following this thread all that closely, what
> specifically should I be testing on Xen? Just starting a guest which
> uses pmtimer under latest SeaBIOS git and checking it works OK?

It's not merged yet; it's at http:// and
git://git.infradead.org/users/dwmw2/seabios.git

Specifically commit 5ba80fac ("Add find_pmtimer() function") and
56014611 ("Use find_pmtimer() after copying Xen ACPI tables").

Previously, SeaBIOS wouldn't use the pmtimer for its own timing purposes
unless it actually set it up for itself and created its *own* ACPI
tables.

I've made it look through the ACPI tables which are provided to it by
Coreboot/Xen/CSM and *find* the pmtimer there, and use it.

So with debug enabled you should see a line something like
'Using pmtimer, ioport 0xb008, freq 3579 kHz' and then lots of
'pmtimer: 0:16408743' as it actually gets read, and the debug statement
in pmtimer_get() gets invoked.

And clock stuff should work correctly.

Thanks.

-- 
dwmw2

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