[coreboot] Only UDMA/33 PATA on m57sli, UDMA/66 with factory BIOS

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Tue Jul 7 23:11:18 CEST 2009

On 07.07.2009 21:47, Peter Stuge wrote:
> Harald Gutmann wrote:
>> PCI registers on coreboot address 0x52 (from the IDE device) has
>> value FF while proprietary has value 99. This is the so called
> Fair enough, but this is the "output" of coreboot. The tricky part
> is to find the "input" for the coreboot code. How to find out which
> cable type is really attached, on this chipset?

I think there is a chipset GPIO you can read to find this out. Dumping
the factory BIOS GPIOs for 40-pin and 80-pin cables would probably help
find the correct setting.



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