[SeaBIOS] Sun Ultra 40 M2 - VGA Card Option Rom not detected

[Nick]

Hi Kevin,

Thanks for taking a look and thanks for your suggestions.

So, SeaBIOS is not designed to detect and run a VGA option rom from a PCIe
video card? I was hoping that I could get SeaBIOS to act similar to the
vendor BIOS and not have to use a serial based console.

Any ideas on SeaBIOS not booting from hard disks or USB storage devices?

Thanks!

Nick

On Thu, May 7, 2015 at 12:17 PM, Kevin O'Connor <kevin at koconnor.net> wrote:

> On Thu, May 07, 2015 at 08:52:17AM -0700, Nick wrote:
> > Hi guys,
> >
> > I just got coreboot with SeaBIOS payload up and running on a previously
> > unsupported system. The system is a Sun Ultra 40 M2 which is very similar
> > to the NVIDIA l1_2pvv development board (which already has a coreboot
> port.)
> >
> > Coreboot detects the VGA card and outputs the text "found VGA at PCI:
> > 43:00.0", however, SeaBIOS does not seem to be able to detect the VGA
> card
> > and doesn't seem to enumerate that bus. It would appear that the option
> rom
> > is not being ran.
>
> It looks like your board has multiple "root" PCI busses (either that
> or coreboot is doing something peculiar with pci).  To support this,
> seabios needs the CBFS file 'etc/extra-pci-roots' to be set - see:
> http://www.coreboot.org/SeaBIOS#Other_Configuration_items
>
> Ideally, one would set this to the number of extra PCI roots (eg, 1 or
> 2), but it can also be set to 255 to force a scan of every PCI bus
> (which takes a little longer on each boot).
>
> > Here's a simple diagram showing roughly how devices are connected on the
> > board: http://ibin.co/20n6DtSrgZSv
> >
> > Here's the console output (SeaBIOS log level 8):
> > http://pastebin.com/jKu21dTV
> >
> > SeaBIOS also detects USB mass storage and hard disk drives, but can not
> > boot from them. There's a HALT statement and a bunch of errors (also seen
> > in the log file.) The boot device was a USB mass storage device with
> linux
> > installed and boots successfully with the vendor bios.
>
> I don't see anything wrong in the log - those messages all appear
> normal.  It's not uncommon for bootloaders to get confused when a
> vgabios isn't present, so I'd track that down first.  If you can't get
> VGA working, consider installing sgabios as described at:
>
> http://www.coreboot.org/SeaBIOS#Adding_sgabios_support
>
> -Kevin
>
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