[coreboot] IDE cable select question
joe at smittys.pointclark.net
joe at smittys.pointclark.net
Fri Feb 22 17:15:54 CET 2008
Hello,
Trying to figure out if it the payloads (filo) or coreboots
resposiblity to detect a 40 or 80 ribbon IDE cable. Reading the ATA
specifications it looks like a IDENTIFY_DRIVE command query to the
drive is the way it detects this and then the bios sets this in the
IDE pci configuration register. Right now, it does not detect this and
when the Linux IDE driver takes over it only runs at ATA33 not ATA100.
For coreboot to automate this it would have to a IDENTIFY_DRIVE
command query to the drive and then set IDE pci configuration
register. Would this be possible to do pre payload or is this
something that would have to be set manually. If manual could we
impliment a global setting??
something like:
IDE_CABLE = 40 or 80
Thanks - Joe
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