[LinuxBIOS] VGA (Tyan s2881)
hidi at e-tiger.net
Fri May 12 22:49:40 CEST 2006
Try to dump it from the original BIOS use AMITOOL or whatever BIOS
s2881 uses... s2882 uses AMI ;( sorry for it...
Friday, May 12, 2006, 10:36:41 PM, you wrote:
> It should be 36k...
> -----Original Message-----
> From: linuxbios-bounces at linuxbios.org
> [mailto:linuxbios-bounces at linuxbios.org] On Behalf Of Ward Vandewege
> Sent: Friday, May 12, 2006 1:19 PM
> To: linuxbios at linuxbios.org
> Subject: [LinuxBIOS] VGA (Tyan s2881)
> (forgot attachment, sorry)
> Hi all,
> I'm trying to get VGA working on the Tyan s2881.
> I've extracted a 32KB VGA rom image while running under the proprietary
> It looks all right: it starts with 55 AA, has ATI strings in it, and it
> just before the next option rom starts with 55 AA.
> I've enabled
> #VGA Console
> default CONFIG_CONSOLE_VGA=1
> default CONFIG_PCI_ROM_RUN=1
> in src/mainboard/tyan/s2881/Options.lb
> I've modified the ROM_SIZE in targets/tyan/s2881/Config.lb:
> option ROM_SIZE = 491520
> I've appended the linuxbios rom to the vgabios, and burned that image.
> It boots fine, but no VGA output.
> I've verified the contents of the video memory after booting:
> dd if=/dev/mem of=vga.bios bs=1 count=32768 skip=786432
> The memory area is identical to the vga bios image I extracted.
> I've attached the boot log. It sees the VGA device, and it says it
> copies the
> ROM image to 0xc0000, all 0x8000 bytes of it.
> I wonder about this halt_sys line:
> copying VGA ROM Image from 0xfff80000 to 0xc0000, 0x8000 bytes
> entering emulator
> halt_sys: file
> line 4387
> PCI: 01:04.0 init
> I feel like I'm missing something pretty obvious here. Suggestions?
> I also wonder why it's _always_ booting the fallback image. I have the
> payload for primary and fallback for now. Is this because there is
> CMOS data?
> Ward Vandewege <ward at fsf.org>
> Free Software Foundation - Senior System Administrator
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