[SeaBIOS] [PATCH] lest pretend that RTC can be used to wakeup from S4

Gleb Natapov gleb at redhat.com
Sun Jan 30 16:23:18 CET 2011


On Sun, Jan 30, 2011 at 05:15:49PM +0200, Avi Kivity wrote:
> On 01/30/2011 05:13 PM, Gleb Natapov wrote:
> >On Sun, Jan 30, 2011 at 05:08:18PM +0200, Avi Kivity wrote:
> >>  On 01/30/2011 04:34 PM, Gleb Natapov wrote:
> >>  >On Sun, Jan 30, 2011 at 09:29:57AM -0500, Kevin O'Connor wrote:
> >>  >>   On Sun, Jan 30, 2011 at 02:17:11PM +0200, Gleb Natapov wrote:
> >>  >>   >   WHQL complains otherwise.
> >>  >>   >
> >>  >>   >   Signed-off-by: Gleb Natapov<gleb at redhat.com>
> >>  >>
> >>  >>   Can you get this acked by one of the kvm/qemu maintainers?
> >>  >>
> >>  >Avi, Marcelo, Anthony can you look at it?
> >>
> >>  Looks reasonable.  What does the guest need to do to get the RTC to
> >>  wake up the machine?  We may need to add that to the DSDT.
> >>
> >This patch was enough to make WHQL happy. I think Windows talks to RTC
> >directly, not via AML code.
> 
> What does it do?  Set the alarm?  Is there a way to set the alarm,
> and not cause a wake up, or does the alarm have a 1:1 relationship
> with wakeup?
> 
According to ACPI spec guest needs to set RTC_EN in PM1x_EN register too.
If wakeup was caused by RTC alarm RTC_STS will be set in PM1x_STS register.
But all this has nothing to do with Seabios.

--
			Gleb.



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