[coreboot] v3 CAR/ROM area collision on C7 and Core2Duo
stepan at coresystems.de
Fri Nov 21 21:31:43 CET 2008
Sent from my iPhone
On 21.11.2008, at 16:47, Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net
> in v2 we enable full ROM decoding before initram. For VIA C7 and Intel
> Core 2 Duo, that means the CAR area is inside the mapped ROM contents.
> The most obvious problem arising from that is having to make sure
> fallback/initram and normal/initram end up in a place in ROM that is
> _not_ behind CAR.
> One solution is to restrict the location of initram to the upper 1
> MB of
> the ROM chip. I can work with that, but we should definitely document
> these restrictions.
> Oh, and for chips which are behind some translation unit with limited
> window capabilities (like the IT8716 LPC->SPI translation) we need to
> have initram inside the decoded window anyway.
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