Are PCI bridges automatically configured?

[Kate Feng]

Peter Dufault wrote:

> On Feb 25, 2005, at 3:04 PM, Joel Sherrill <joel at OARcorp.com> wrote:
>
> >
> > On a board with a nice Rom monitor like PPCBug, it is
> > quite possible that it was initialized by the Bug.
>
> If it was enabled by MOTLoad (the monitor on the MVME5500), then it has
> a bug similar to RTEMS mvme5500 (arbitrarily limiting number of busses)
> since the bus and device don't show up with pciShow (and other pciFoo)
> commands in MOTLoad, but after increasing the number of busses in the
> RTEMS source it is showing up in RTEMS using BSP_pciFindDevice.

Good to know I am not the only one who limited it.

>
>
> I'm still not sure who enabled the bridge.

You did it.
Any PMC device should have firmware to follow the PCI
standard to respond to a PCI  bridge search.  You just enabled
the search by increasing the limit of two.

Regards,
Kate