[coreboot] Coreboot ECC support in Asrock IMB-A180-H

Piotr Król piotr.krol at 3mdeb.com
Sun Sep 10 21:49:48 CEST 2017


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On 09/10/2017 01:04 PM, Kyösti Mälkki wrote:

Hi Kyösti, Alberto,

> 
> At this very moment apu2/apu3 4GB models are marketed without ECC
> support. Latest available binaryPI build (which contains a fix for
> ECC) is otherwise not compatible. You can thank AMD for not even
> allowing their commercial customers, who have access to said PI
> sources under NDA, to distribute fixed builds.

We planned get back to ECC issue in coming month by exercising 2 ideas
from forum [1]:

1. Mentioned by Kyösti usage of UEFI payload and MemTest86 v7 Pro
Edition. I already started work on payload [2] and have ability to
boot to UEFI shell, but now working storage drivers yet.

2. Use rowhammer_test mentioned in last post [1].

But it looks I completely forget mentioned bug. I assume above
scenarios will not work in light of mentioned bug ?

We know which version of AGESA breaks apu2/3. It is [3]. We tried to
disable graphics in various ways, but nothing helps.

@Kyösti, maybe it is related to PspMboxBiosCmdDramInfo and
PspMboxBiosCmdExitBootServices commands and PSP support in coreboot ?


[1]
http://pcengines.info/forums/?page=post&id=E35B5D34-262B-480E-9887-F7F2A
292E02F&fid=DF5ACB70-99C4-4C61-AFA6-4C0E0DB05B2A&pageindex=2
[2] https://github.com/3mdeb/edk2/tree/apu2-uefi
[3]
https://review.coreboot.org/cgit/blobs.git/commit/?id=95b80508d9ba26350b
7e699decd47074f480a2f2

- -- 
Piotr Król
Embedded Systems Consultant
https://3mdeb.com | @3mdeb_com
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