RE: [OpenBIOS] PCI setup code

[Maciej W. Rozycki]

On Thu, 6 Apr 2000, Ronald G. Minnich wrote:
> > Nope.  Linux just sets IRQs up based on the MP table.  The MP table is
> > constructed by BIOS and it reflects physical routing of interrupt lines on

[...]
> what if there is no MP table?

Linux starts UP then and uses 8259A interrupt controllers which have to
work due to the DOS compatibility.

If you know the interrupt and CPU configuration in advance, you can
develop a platform-specific backend -- see the code for SGI Visual
Workstation support (CONFIG_VISWS).