Re: [LinuxBIOS] VGA (Tyan s2881)

[Lu, Yinghai]

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.

[LinuxBIOS] VGA (Tyan s2881)

[Ward Vandewege]

On Fri, May 12, 2006 at 01:36:41PM -0700, Lu, Yinghai wrote:
> It should be 36k...

I saw that somewhere - the last 4k is the bios for the onboard sata
controller though?

Ward.

[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.
>

[LinuxBIOS] VGA (Tyan s2881)

[Hidasi Jozsef]

Hello Ward,

You are true somewhy the last 4k is invisible or overmapped I don't
 know but the real bios size is 36k!

Friday, May 12, 2006, 10:44:43 PM, you wrote:
> On Fri, May 12, 2006 at 01:36:41PM -0700, Lu, Yinghai wrote:
> > It should be 36k...
> I saw that somewhere - the last 4k is the bios for the onboard sata
> controller though?
> Ward.
>

[LinuxBIOS] VGA (Tyan s2881)

[Ward Vandewege]

On Fri, May 12, 2006 at 10:49:40PM +0200, Hidasi Jozsef wrote:
> Try to dump it from the original BIOS use AMITOOL or whatever BIOS
> s2881 uses... s2882 uses AMI ;( sorry for it...

The s2881 is AMI too.

How would I dump it from the original BIOS? The images I have are all
compressed somehow.

I find 4 references to AMITOOL using google - none of them say where it can
be found. Where can I find it?

Ward.