irq_table.c without a pirq table?

[Ulrik Forsgren (EAB)]

Hi!

I'm am testing LinuxBIOS on a Pentium motherboard that doesn't have a pirq table in BIOS and I suppose that Linux requires a pirq table to be able route the irqs to the PCI boards.
I have scanned the original BIOS without finding the PIRQ tag.

How can I create an irq_table.c when I can't copy it from the original BIOS?

PCIBIOS 2.1 calls?

Rgds,
UFo
Ulrik Forsgren
[e-mail]

[Ronald G. Minnich]

can you tell us more? what name etc.?

ron

"Ulrik Forsgren (EAB)"  writes:
> Hi!
>
> I'm am testing LinuxBIOS on a Pentium motherboard that doesn't have a pirq table
> in BIOS and I suppose that Linux requires a pirq table to be able route the irqs
> to the PCI boards.
>
> I have scanned the original BIOS without finding the PIRQ tag.
>
> How can I create an irq_table.c when I can't copy it from the original BIOS?
>
> PCIBIOS 2.1 calls?

Or looking at the irqs assigned on the pci bus and at the irq router.
Or looking at the MP table.
Or looking through the information provided by ACPI.

Eric