Re: [LinuxBIOS] VGA (Tyan s2881)

[Hidasi Jozsef]

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...
> YH
> -----Original Message-----
> From: [e-mail]
> [mailto:[e-mail]] On Behalf Of Ward Vandewege
> Sent: Friday, May 12, 2006 1:19 PM
> To: [e-mail]
> 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
> BIOS.
> It looks all right: it starts with 55 AA, has ATI strings in it, and it
> stops
> 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
>
> /personal/projects/gnu/chimera/linuxbios/lbv2/rev-latest/LinuxBIOSv2/src
> /devices/emulator/x86emu/ops.c,
>   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
> same
> payload for primary and fallback for now. Is this because there is
> 'dirty'
> CMOS data?
> Thanks,
> Ward.
>