On Fri, May 21, 2010 at 12:10:51PM -0400, Myles Watson wrote:
On Fri, May 14, 2010 at 1:49 PM, Joe Korty joe.korty@ccur.com wrote:
Unfortunately we have an even bigger PCI-e loaded expansion chassis (configuration #2), for which coreboot also hangs. It's not an out-of-memory hang; it happens (apparently) during the bus walk. ?I haven't looked into this hang in detail yet, so I don't have much to report. ?But I do fear it may be something more fundamental.
If you send the log to the list we might be able to help.
Hi Myles, I've solved this one, kind of. It is PCI IO Space overflow, we are going over 0xffff which apparently is a hard limit. I image this is there so that inb, outw, etc instructions can be used to reference these devices.
But if one doesn't use such instructions (instead using memory mapped PCI IO space), I see no reason why Linux and coreboot couldn't work with PCI IO Space addresses
0xffff.
Regards, Joe