[coreboot] SB600 SPI hangs explained

Peter Stuge peter at stuge.se
Thu May 14 04:21:21 CEST 2009

Carl-Daniel Hailfinger wrote:
> The docs are not yet public, so I don't know.

The question was for someone else who knows.

> > I guess you're using the SPI BAR value as part of the heuristic.
> Since accessing the SPI master is completely impossible if the SPI
> BAR is located at 0x0

Sure, but a valid BAR does not a flash chip present make.

> OTOH, even if no SPI chip is attached, probing will not hang as
> long as the BAR is not at 0x0.

Do you know what will actually happen in that case?


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