Re: [coreboot] Coreboot on AMD Geode; No VGA

[Peter Stuge]

Andrew Bolster wrote:
> Can anyone point me in the direction of how to set up coreboot +
> seabios so that it actually uses the VGA?

Are you sure there actually is VGA? For the Geode SC series it was
neccessary to have a VSM that would emulate a fair bit of the legacy
VGA. I think LX has some hardware support, but not the full monty. If
you already have the correct VSM in your VSA blob then "all" you need
is to extract the VGA BIOS from the original BIOS, and add that into
coreboot.rom as pcixxxx,yyyy.rom where xxxx,yyyy is the graphics PCI
id.
> I've tried the rational combinations of enabling and disabling the option
> roms,

Note that coreboot should not be initializing option ROMs, instead
SeaBIOS should be used for that. So disable option ROMs in coreboot
config.
> but I assume that I need a vgabios.bin?

Yes. Try the bios_extract tool to grab the VGA BIOS out of the
factory BIOS image.

//Peter

Coreboot on AMD Geode; No VGA

[Andrew Bolster]

On 12 July 2011 18:44, Peter Stuge  wrote:
> Andrew Bolster wrote:
> > Can anyone point me in the direction of how to set up coreboot +
> > seabios so that it actually uses the VGA?
>
> Are you sure there actually is VGA? For the Geode SC series it was
> neccessary to have a VSM that would emulate a fair bit of the legacy
> VGA. I think LX has some hardware support, but not the full monty. If
> you already have the correct VSM in your VSA blob then "all" you need
> is to extract the VGA BIOS from the original BIOS, and add that into
> coreboot.rom as pcixxxx,yyyy.rom where xxxx,yyyy is the graphics PCI
> id.
> I've tried the rational combinations of enabling and disabling the option
> > roms,
>
> Note that coreboot should not be initializing option ROMs, instead
> SeaBIOS should be used for that. So disable option ROMs in coreboot
> config.
> but I assume that I need a vgabios.bin?
>
> Yes. Try the bios_extract tool to grab the VGA BIOS out of the
> factory BIOS image.

Well I'm using the gpl_vsa_lx_102.bin from MJones, turned off VGA option
roms, Seabios Stable as the payload, and an extracted bios using the script
from the wiki.[
http://www.coreboot.org/VGA_support#Extracting_from_the_system_.28if_everyth...
]

There is a very old thread pertaining to this that I had a look through but
couldn't really explain any of the problems (or why no fixes have been
pushed up). [
http://www.coreboot.org/pipermail/coreboot/2008-October/039657.html]

I admit that I don't understand alot of the details of the boot diagnostics,
but if anyone cares to have a look, heres the bootlog for what happens with
the above setup. http://pastebin.com/jNtuEyV7

Thanks for your quick responses.

A