[coreboot] Raminit help

Myles Watson mylesgw at gmail.com
Tue Jun 9 21:21:57 CEST 2009

> Myles,
> Maybe leave the MTRR off until you get it working. I think that you
> can leave it in CAR mode until you have tested that the memory is
> working.

I'm trying that now.

> I assume you are very failiar with the FAM10 BKDG DRAM and
> MMIO Memory Space.

I've been reading it, but it seems like you can never be familiar enough
with data sheets and other docs :)

> Can you successfully access the memory as MMIO, F1x[BC:80] before
> trying F1x[1, 0][7C:40] DRAM address setup? I am not sure what will
> happen with a DRAM access that tries to go out a non-coherent link.

I was hoping that the DRAM address registers are all disabled before RAM
init.  I'll look again to make sure.


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