Re: [LinuxBIOS] VGA help under QEMU

[Corey Osgood]

Marc Karasek wrote:
> I do not see how to put the vgabios image into LB.  I see where u can 
> specify to run option roms and tell LB to initialize vga devices.  I do 
> not see where you can tell it to pull in the vgabios image.

In qemu's Config.lb, you specify something like

chip drivers/pci/onboard
    device pci 2.0 on end
    register "rom_address" = "0xfff80000"
end

The vga device location varies from system to system, dunno off the top 
of my head where QEMU's is. rom_address is always 4GB - the total rom 
size - 1, including vga bios, the value above is for a 512K rom. The 
ROM_SIZE in target/../Config.lb should be adjusted to be total rom size 
- vga rom size. The vga rom should then be cat'd into the beginning of 
the final rom, ie "cat vga.rom linuxbios.rom > lb_final.rom". I haven't 
been following the thread, so please excuse me if you already know some 
parts of this.

-Corey
> /*********************
> Marc Karasek
> MTS
> Sun Microsystems
> mailto:[e-mail]
> ph:770.360.6415
> *********************/
>
> Myles Watson wrote:
> > On Dec 13, 2007 3:01 PM, ron minnich  wrote:
> > > my apologies, it was a big going-away lunch and I am now sleepy.
> >
> > No problem.
> > > I just did a build with latest v3, built a 256kb bios, copy it to a
> > > directory, run qemu as follows:
> > > qemu -serial stdio -L . -kernel linux-2.6.15-bochs/vmlinux -hdc hda -hda hda
> > >
> > > and I get video.
> > >
> > > I am using the vgabios-cirrus.bin
> >
> > I'm not specifying the vgabios specifically, but v2 finds the vgabios-cirrus.bin
> > > Option ROMS are run in Phase 6.
> > > Mine looks like this:
> > >
> > > Phase 6: Initializing devices...
> > > Phase 6: Root Device init.
> > > Phase 6: PCI: 00:00.0 init.
> > > PCI: pci_dev_init
> > > Probing for option ROM
> > > Phase 6: PCI: 00:01.0 init.
> > > Initializing realtime clock.
> > > RTC: Checksum invalid zeroing cmos
> > > Invalid LinuxBIOS CMOS checksum.
> > > Phase 6: PCI: 00:01.1 init.
> > > Enabling IDE channel 1
> > > Enabling IDE channel 2
> > > Enabling Legacy IDE
> > > Phase 6: PCI: 00:01.3 init.
> > > Enabling SMBus.
> > > Enable Power Management Functions
> > > Phase 6: PCI: 00:02.0 init.
> > > PCI: pci_dev_init
> > > Probing for option ROM
> > > ROM address for PCI: 00:02.0 = c0000
> > > PCI Expansion ROM, signature 0xaa55, INIT size 0x8c00, data ptr 0x0038
> > > PCI ROM Image, Vendor 1013, Device 00b8,
> > > PCI ROM Image, Class Code 030000, Code Type 00
> > > Copying VGA ROM image from 0x000c0000 to 0xc0000, 0x8c00 bytes
> > > Phase 6: PCI: 00:03.0 init.
> > > PCI: pci_dev_init
> > > Probing for option ROM
> > > Phase 6: PCI: 00:04.0 init.
> > > PCI: pci_dev_init
> > > Probing for option ROM
> > > Phase 6: Devices initialized.
> > >
> > > When I look at yours I see an error:
> > > Phase 6: PCI: 00:02.0 init.
> > >
> > > PCI: pci_dev_init
> > >
> > > Probing for option ROM
> > >
> > > ROM address for PCI: 00:02.0 = c0000
> > >
> > > PCI Expansion ROM, signature 0xaa55, INIT size 0x8a00, data ptr 0x736f
> > >
> > > PCI ROM Image, Vendor 0846, Device ec89,
> > >
> > > Device or Vendor ID mismatch Vendor 0846, Device ec89
> > >
> > > see the mismatch? So it will not run the rom. The option rom does not
> > > match the hardware .
> >
> > Good catch.
> > > What vga bios are you using? I hope to wake up more soon and might
> > > actually give a useful answer :-)
> >
> > I don't know where it's getting another VGA bios.  I tried removing
> > the other vgabios.bin file from the directory, but I get the same
> > results.
> >
> > I looked in the pci.ids file, and the Vendor ID is not there, so I'm
> > not sure what the problem is.
> >
> > Myles