Hi,

I was using four (and later eight) Crucial CT51272BD160BJ (4GB, ECC,
unbuffered) for more than a year (with coreboot 4.7 if I remember
correctly) with two Opteron 4284. The only issue I have found is that
the memory is running at DDR3-1333 instead of DDR3-1600.

Cheers,
Matthias

On 04/06/2019 10:53, up6IfzRzvQCyv9AK4XvYirxDa8 via coreboot wrote:
> The proprietary BIOS and Libreboot are working well. Also a RAM module that 
> is directly recommended at the
> Raptor Engineering ASUS KCMA-D8 status page 
> (https://www.raptorengineering.com/coreboot/kcma-d8-status.php) - the 1x DIMM 
> HMT325U7BFR8A is working. Anything else I have here is not working and 
> looping with the message:
> 
> DIMM training FAILED! Restarting system...soft_reset() called!
> 
> I tried RDIMMs and UDIMMs and different KCMA-D8 boards - brand new and also 
> some from fleabay sold from china with revision numbers that are not 
> mentioned anywhere. Got the same results on all the boards.
> 
> What RAM modules are you using? ECC / non-ECC? What sizes?
> 
> "FYI you need microcode updates with the 43xx CPU otherwise you will have
> critical security issues"
> 
> Yes, that is the reason I want to use coreboot and 43xx is the target 
> platform. Those 41xx are
> used just for testing.
> 
> I also tried coreboot 4.6 (release) but got the above error message. Looks 
> like I have to remove all commits that has been done since the Libreboot 
> fork. I'm surprised that it's so hard because I thought the KCMA-D8 would be 
> better supported and tested.
> 
> 
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Sunday, June 2, 2019 10:45 AM, up6IfzRzvQCyv9AK4XvYirxDa8 
> <up6ifzrzvqcyv9ak4xvyirx...@protonmail.com> wrote:
> 
>> Hi guys,
>>
>> thank you for the valuable feedbacks. As I can see from the git commits, it 
>> was mainly Timothy Pearson from Raptor Engineering Inc who worked on the 
>> kcma-d8 porting. Libreboot is based on some version of coreboot 4.6. But it 
>> seems that after that a number of RAM related commits has been done,like 
>> e.g. this:
>>
>> commit 99e27ceb6d913a7a882cc6e7277b881df38dc9ad
>> Author: Timothy Pearson tpear...@raptorengineeringinc.com
>> Date: Sun Apr 24 20:33:29 2016 -0500
>>
>> mainboard/kgpe-d16|kcma-d8: Update memory test to include second PRNG stage
>>
>> The existing memory test routine was insufficient to detect certain types
>> of bus instability related to multiple incompatible RDIMMs on one channel.
>>
>> Add a PRNG second stage test to the memory test routine. This second stage
>> test reliably detects faults in memory setup for RDIMM configurations that
>> also fail under the proprietary BIOS.
>>
>> Change-Id: I44721447ce4c2b728d4a8f328ad1a3eb8f324d3d
>> Signed-off-by: Timothy Pearson tpear...@raptorengineeringinc.com
>>
>>     Reviewed-on: https://review.coreboot.org/14502
>>     Tested-by: build bot (Jenkins)
>>     Tested-by: Raptor Engineering Automated Test Stand 
>> <nore...@raptorengineeringinc.com>
>>
>>     Reviewed-by: Martin Roth <martinr...@google.com>
>>
>>
>> Can someone confirm that the latest libreboot on the kcma-d8 is stable, so 
>> that the effort of the commit 'dichotomy' will be worth it. This means 
>> basically
>> to roll back the commits for the kcma-d8 that has been done since the 
>> libreboot fork.
>>
>> Another approach would be to figure out why only very few RAM modules are 
>> supported. I can offer test support, but the analysis exceeds my knowledge 
>> and
>> skills in this area.
>>
>> Regards
>>
>> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>> On Saturday, June 1, 2019 6:29 PM, Mike Banon mikeb...@gmail.com wrote:
>>
>>>> Why libreboot works and coreboot doesn't?
>>>
>>> Libreboot is some older version of coreboot where all the blobs have
>>> been removed. If something works at libreboot but doesn't work at
>>> coreboot, most likely that means there was a breaking commit at
>>> coreboot which came later than a libreboot release (and, like the rest
>>> of new commits, this breaking commit is going to be inherited by
>>> libreboot in its' next release). When you encounter such a situation,
>>> you should do a commit dichotomy to find out which commit broke the
>>> things and report it, so that maybe it would be reverted or improved
>>> and then the things should become working for you in the latest
>>> coreboot master. Good luck
>>> On Sat, Jun 1, 2019 at 9:28 AM Sean Lynn Rhone espionage...@posteo.net 
>>> wrote:
>>>
>>>> For non-ECC modules on the KCMA-D8, I found that Samsung M378B5273CH0-
>>>> CK0, Micron 16JTF25664AZ-1G4F1, and Nanya NT2GC64B88B0NF-CG work with
>>>> Coreboot.
>>>> I also had SK Hynix HMT151R7BFR4C-H9 which didn't work with Coreboot,
>>>> but worked on Libreboot. Samsung M393B5270CH0-CH9 also doesn't work
>>>> with Coreboot.
>>>> On Fri, 2019-05-31 at 10:00 +0000, up6IfzRzvQCyv9AK4XvYirxDa8 via
>>>> coreboot wrote:
>>>>
>>>>> There are also differences between 42xx and 42xx/43xx. Below a
>>>>> logfile of coreboot 4.9 with 4225 and 4180.
>>>>> Test with 4365 + coreboot 4.9 and 1x M391B1G73BH0-CK0 in the Slot A2
>>>>> and 1x CPU. The same configuration but with the HMT325U7BFR8A
>>>>> (recommended by raptorengineering.com) works. I t
>>>>
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