[SeaBIOS] [Qemu-devel] [PATCH V2] pci: fixes to allow booting from extra root pci buses.

[Gerd Hoffmann]

  Hi,

> I'm wondering whenever things become easier if we add config registers
> to the pxb, where the firmware can program the bus number range and we
> can use the config register base as a way to specify which pxb we are
> referring to ?

... and, while thinking about ben's reply elsewhere in this thread,
maybe even decouple the whole thing from the primary root bus?  You
can't program the devices via 0x0cf8 then, but we could add a mmconfig
bar to the host bridge device ...

cheers,
  Gerd