Hi Kevin,
Your advice worked! Although, in a strange way - I first friend extra-root-pci set to 255 without luck. It enumerated the bus but no option rom was found/ran.
I then built sgabios and added to the image along with the option to fix the duplicate serial output issue. After flashing and rebooting I was presented with a SeaBIOS prompt on my screen, which was unexpected but great!
SeaBIOS then booted from the flash drive and I was presented with a linux kernel panic. I'll need to investigate that one, but it's looking promising.
Thanks again for your help!
-Nick
On Thu, May 7, 2015 at 12:43 PM, Kevin O'Connor kevin@koconnor.net wrote:
On Thu, May 07, 2015 at 12:29:47PM -0700, Nick wrote:
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.
SeaBIOS can use VGA on PCIe cards - the problem appears to be that SeaBIOS isn't scanning all the PCI buses on the machine. Try setting extra-pci-roots as described previously.
Any ideas on SeaBIOS not booting from hard disks or USB storage devices?
I suspect the problem with USB storage is really just a result of VGA not working and the behavior of third-party bootloaders when a vgabios isn't found. See my previous email.
-Kevin