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

Harald Gutmann harald.gutmann at gmx.net
Tue Jul 7 21:59:12 CEST 2009

On Tuesday 07 July 2009 21:47:57 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
> > "CABLE_BIT".
> 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 know that, and that's the question about "when" to write the output.
For a quick and dirty, compile-time option fix, this information is enough, but 
not for a runtime-solution.

> //Peter

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