[coreboot] #137: S2895 no function after coreboot 2 flash
coreboot
svn at coreboot.org
Thu May 21 13:49:49 CEST 2009
#137: S2895 no function after coreboot 2 flash
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Reporter: anonymous | Type: defect
Status: new | Priority: major
Milestone: | Component: buildrom
Version: v2 | Keywords:
Dependencies: | Patchstatus: there is no patch
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Comment(by myles):
Replying to [comment:16 anonymous]:
> I need a little more help to get this XP working. Could you give a
helping hand?
> Is it possible to use the DSDT.dat file that i extracted from my
original Bios and implement that into the coreboot? Or is this not
possible?
It's possible. There are a couple of problems:
1. Buses are renumbered by coreboot
2. Different Opteron registers are used
3. Interrupt assignments are different
I was hoping that the acpica tools and linux firmware kit would help me
narrow down the problems. Unfortunately, the ACPI from the factory BIOS
has errors too, so it is hard to tell what is right.
I've been thinking about stripping my s2895 down to just one HT link to
simplify things, so that I could get Windows to work and then add
functionality back in. If we disable the 8131 (you lose PCI-X and
possibly SCSI) and disable the Nvidia 2060 (you lose a PCIe slot and a
NIC), then there is only one root PCI bus and one APIC. I think it would
be doable, but I haven't gotten to it yet.
I'll help you do it if you are interested.
Thanks,
Myles
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Ticket URL: <http://tracker.coreboot.org/trac/coreboot/ticket/137#comment:17>
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