Re: [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  wrote:
> On Thu, Nov 6, 2008 at 10:27 PM, Elia Yehuda  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  wrote:
> > > On Fri, 7 Nov 2008 04:55:41 +0200, "Elia Yehuda" 
> > > 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
> > >
> > > wrote:
> > > > > On Fri, 7 Nov 2008 04:24:38 +0200, "Elia Yehuda" 
> > > > > 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?