On 25.10.2012 08:59, Rudolf Marek wrote:
Hi
Just a small update. I think all BIOSes I have seen have UEFI only VGA BIOS. Now question is what we will have to do? I found in the EFI file the 0xaa 0x55 style BIOS (20KB big) but the init code has only retf and most likely it contains only an atom bios. The int10 may be handled through int10smm.efi module.
I think we either need VGA BIOS blob or implement the atomBIOS interpreter into Seabios...
Still no reply from AMD folks :/ are there some on this list?
In the meanwhile I tried to dump the BIOS style rom I found yesterday with a atombios dumper and it does indeed show atombios tables.
So, If we don't find a legacy VGA BIOS for trinity, we could just install this as fake VGA bios and then let linux to post the GPU. Or if someone likes really adventures we could possibly build into coreboot an AtomBIOS interpreter and do the legacy VGA modeset ourself.
Thanks Rudolf