Re: Re: s3_late_bios

["Emmanuel Thomé" <Emmanuel.Thome-MZpvjPyXg2s@public.gmane.org>]

On Mon, Nov 08, 2004 at 01:53:25PM -0800, Nate Lawson wrote:
> I'm not sure I understand the reason for this or how it works.  Does it 
> POST VGA via the "lcall $0xc000,$3" or the "int 10h" method?  I assume 

lcall.

> the reason it's called by the PCI code is that you want the device to be 
> set to D0 and device-specific resume methods called before POSTing it?

acpi_vgapost is meant to hook into the device-specific resume methods.
Indeed, the pci device is set to D0 prior to calling acpi_vgapost.

Doing POST from the early resume phase seems just too early ; too many
things are unitialized at this point. Doing it later on is more
convenient.

> Why the switch to real mode to run the BIOS call?  Can't this be done 
> from vm86 mode?

Yes it can, at least I think so. You're welcome to tweak this to do it in
a vm86 mode if you like.

E.


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