[coreboot] fixing i810 onboard vga

[Elia Yehuda]

found the problem - its my buggy vga.rom!!! it's missing the damn device_id!

ive patched it, and now the screen turns on upon boot, but no messages.
however....
once i "modprobe i810fb" from the serial console, look and be-hold - we've
got onboard-vga working!

many thanks, now if we can figure out why it wont display upon bootup it
will be great.

also, another thing which troubles me - BEFORE booting begins, there are
0x00 sent to the serial for about 2 minutes (i've counted about 80 o those
0x00 being sent) and only then the coreboot messages starts to appear and
the boot continues. i would appreciate eliminating this 2 minutes delay...
any relevant information would be appreciated.

Regards,
Elia.


On Fri, Nov 7, 2008 at 5:37 AM, Corey Osgood <corey.osgood at gmail.com> wrote:

> On Thu, Nov 6, 2008 at 10:27 PM, Elia Yehuda <z4ziggy at gmail.com> wrote:
>
>>
>> thanks for the suggestion - ive added
>> #define PCI_DEVICE_ID_INTEL_82810E_IG   0x7125
>>
>> to src/include/device/pci_ids.h but still no luck :
>>
>> rom address for PCI: 00:01.0 = fffc0000
>> PCI Expansion ROM, signature 0xaa55, INIT size 0xa000, data ptr 0x0110
>> PCI ROM Image, Vendor 8086, Device 0000,
>> Device or Vendor ID mismatch Vendor 8086, Device 0000 (Expected Vendor
>> 8086, Device 7125)
>>
>> im guessing the device_id needs to be declated somewhere in the code or
>> maybe in the Config.lb?
>>
>
> Huh? Where is the device ID of 0000 coming from? It's been a while since
> I've been in that part of v2, but it looks like it's coming from the rom
> itself. If that's the case, can you hack pci_rom.c to ignore the device ID
> and run the rom anyway?
>
> -Corey
>
>
>>
>>
>> Regards,
>> Elia.
>>
>>
>> On Fri, Nov 7, 2008 at 5:06 AM, Joseph Smith <joe at settoplinux.org> wrote:
>>
>>>
>>>
>>>
>>> On Fri, 7 Nov 2008 04:55:41 +0200, "Elia Yehuda" <z4ziggy at gmail.com>
>>> wrote:
>>> > yep, ive extraced my vga using awardeco which should be fine (and it
>>> does
>>> > seems fine on the lspci -n, which is very frustrating)
>>> >
>>> > On Fri, Nov 7, 2008 at 4:48 AM, Joseph Smith <joe at settoplinux.org>
>>> wrote:
>>> >
>>> >>
>>> >>
>>> >>
>>> >> On Fri, 7 Nov 2008 04:24:38 +0200, "Elia Yehuda" <z4ziggy at gmail.com>
>>> >> wrote:
>>> >> > tnx Joseph,
>>> >> >
>>> >> > i've fixed the following (to match my 256kb bios) :
>>> >> >
>>> >> >   device pci_domain 0 on
>>> >> >
>>> >> >       device pci 0.0 on end            # Host bridge
>>> >> >         chip drivers/pci/onboard
>>> >> >           device pci 1.0 on end            # Onboard video
>>> >> >           register "rom_address" = "0xfffc0000"
>>> >> >       end
>>> >> >   ...
>>> >> >   end
>>> >> >
>>> >> > and now the rom_address is set AND i see the device in lspci :
>>> >> > lspci:
>>> >> > 00:01.0 VGA compatible controller: Intel Corporation 82810E DC-133
>>> > (CGC)
>>> >> > Chipset Graphics Controller (rev 03)
>>> >> > lspci -n:
>>> >> > 00:01.0 0300: 8086:7125 (rev 03)
>>> >> >
>>> >> > but still no vga-output!
>>> >> > i found the following to might suggest another problem :
>>> >> >
>>> >> > PCI Expansion ROM, signature 0xaa55, INIT size 0xa000, data ptr
>>> 0x0110
>>> >> > PCI ROM Image, Vendor 8086, Device 0000,
>>> >> > Device or Vendor ID mismatch Vendor 8086, Device 0000
>>> >> >
>>> >> > and no "copying VGA ROM Image"...
>>> >> Yep that is your problem. Is there something wrong with your vga bios.
>>> > It
>>> >> is reading the vendor id ok but the device id should be 7125.
>>> >> Have you checked this out? It may help you to get a valid vga bios.
>>> >> http://www.coreboot.org/VGA_support
>>> >>
>>> coreboot uses a different pci.ids file than Linux. That's why Linux can
>>> find it but coreboot can't? Check and see if the coreboot pci.ids file
>>> includes 8086 / 7125. It may be missing and just needs to be added?
>>>
>>> --
>>> Thanks,
>>> Joseph Smith
>>> Set-Top-Linux
>>> www.settoplinux.org
>>>
>>>
>>
>> --
>> coreboot mailing list: coreboot at coreboot.org
>> http://www.coreboot.org/mailman/listinfo/coreboot
>>
>
>
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