[coreboot] VGA Option ROM

[Wolfgang Kamp - datakamp]

Hi,

When execution of VGA option ROM is configured in seabios,
seabios first scans all PCI devices and looks for a vga type device as you can see in my  attached log.
If seabios finds a pci vga device then it looks for a suitable VGA BIOS (Vendor id:Device id / 1002:9804) in CBFS.
But if seabios does not find a vga device, it doesn't look for the VGA BIOS. That is what happens.
In my issue seabios can only find the pci VGA device if I first enabled VGA ROM execution in coreboot.
If seabios finds the vga device it will also find the correct VGA BIOS in CBFS and executes it.
The log shows this. The issue is that the pci enumertion fails in seabios and it does not list all available devices.
Why is it broken? It could be a coreboot or seabios problem.

Regards

Wolfgang



Von: QingPei Wang [mailto:wangqingpei at gmail.com]
Gesendet: Samstag, 9. Juni 2012 20:48
An: Wolfgang Kamp - datakamp
Cc: Coreboot
Betreff: Re: [coreboot] VGA Option ROM

 what does "seabios cannot run the vga option ROM" looks like?
did seabios find the vbios from CBFS?
1. found, but vbios executed failed?
2. seabios could not find vbios?



Best wishes
QingPei Wang
Phone: 86+018930528086

On Fri, Jun 8, 2012 at 11:42 PM, Wolfgang Kamp - datakamp <wmkamp at datakamp.de<mailto:wmkamp at datakamp.de>> wrote:
Normally seabios should run the option ROMs. But in my issue seabios cannot run the vga option ROM,
because it cannot find the vga pci device.
Seabios first looks for the vga pci device and if it finds a vga device it searches in CBFS for the correct ROM file.
So I think there is a pci enumeration problem which seems to be caused from coreboot.

Wolfgang

-----Ursprüngliche Nachricht-----
Von: ron minnich [mailto:rminnich at gmail.com<mailto:rminnich at gmail.com>]
Gesendet: Freitag, 8. Juni 2012 17:16
An: Wolfgang Kamp - datakamp
Cc: coreboot at coreboot.org<mailto:coreboot at coreboot.org>
Betreff: Re: [coreboot] VGA Option ROM

I wonder if we need another option :-( to configure the rom but not run it?

ron




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