On Saturday 27 October 2007, Carl-Daniel Hailfinger wrote: > Besides that, there are still unexplained differences between vendor > BIOS and LinuxBIOS in the PCI configuration. > > http://linuxbios.org/pipermail/linuxbios/2007-May/021538.html and the > followup > http://linuxbios.org/pipermail/linuxbios/2007-June/022299.html
As you already mentioned, legacy BIOS assigns resources downwards, while LB does it upwards. Some other differences might just be consecutive errors from the GPIO misconfig. >From my understanding we're talkin plain Linux here, not LinuxBIOS; if there's ACPI or the like, the kernel will use the described config. If not, Linux will (re-)configure the bridges itself. Bridges that seem to lead nowhere are assigned no resources. > > Oh, and here is a nice dmesg diff snippet: > > --- dmesg.vendor 2007-10-27 03:11:10.000000000 +0200 > +++ dmesg.LB 2007-10-27 03:11:10.000000000 +0200 > PCI: Bridge: 0000:00:06.0 > IO window: disabled. > - MEM window: fb000000-fb0fffff > + MEM window: disabled. > Notice the disabled mem window. Fix. PCI slots are dead due to the GPIO problem. BTW firewire lives behind that bridge, too? > + PREFETCH window: disabled. > +PCI: Bridge: 0000:00:0a.0 > + IO window: disabled. > + MEM window: disabled. > + PREFETCH window: disabled. > +PCI: Bridge: 0000:00:0b.0 > + IO window: disabled. > + MEM window: disabled. > + PREFETCH window: disabled. > +PCI: Bridge: 0000:00:0c.0 > + IO window: disabled. > + MEM window: disabled. > + PREFETCH window: disabled. > +PCI: Bridge: 0000:00:0d.0 > + IO window: disabled. > + MEM window: disabled. > + PREFETCH window: disabled. > +PCI: Bridge: 0000:00:0e.0 > + IO window: disabled. > + MEM window: disabled. > PREFETCH window: disabled. > > Notice all these added PCI bridges. Fix. These are the PCIe bridges. Do you have any cards in there, besides the primary graphics (0000:00:0f.0)? If not: see above. > PCI: Bridge: 0000:00:0f.0 > - IO window: 9000-9fff > - MEM window: f8000000-faffffff > + IO window: 1000-1fff > + MEM window: f4000000-f60fffff > PREFETCH window: e0000000-efffffff > [...] Different allocation strategy. Only - [virtual] Expansion ROM at f8000000 [disabled] [size=128K] + Expansion ROM at c8000000 [disabled] [size=128K] on my system worries me. > +mtrr: type mismatch for e0000000,10000000 old: write-back new: > write-combining +mtrr: type mismatch for e0000000,10000000 old: write-back > new: write-combining > > > Set up MTRRs the right way. Fix. Indeed! > Once the issues mentioned and linked above are fixed, we may be able to > claim support for the M57SLI. Good to hear I'm not alone :-) > Oh, and io_dump.c is here: > http://linuxbios.org/pipermail/linuxbios/2007-October/025630.html Thanks! I'll now reboot to get a diff, and test NoDDC2... Torsten -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios
