Re: [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 ?

> But then we'll need a bunch of fw cfg entries to let guest
> discover the extra roots and their bus ranges.

We could add them to the pxb host bridge device (1b36:0009).  Then we
don't need any fw_cfg stuff, seabios could simply lookup/setup things in
the 1b36:0009 pci config space ...

cheers,
  Gerd