Crystallwell support

[xy-tech]

I've tried crystallwell CPUs and it's not supported on the release build. I'm quite new to this, but is there an option to choose during build to include crystallwell? The crystallwell chip I've tried is the 4960HQ.

[archfan]

Thanks for posting this report.

Which branches did you try? When you build coreboot from the original repository does the problem still persist?

but is there an option to choose during build to include crystallwell?

There is no such option.

[archfan]

Maybe it's a VBIOS / gfx init issue.

I don't have a crystal well CPU yet. Could you recommend a reliable seller for these?

[xy-tech]

The stable release branch. I've tried the 4712HQ (not MQ) and it works perfectly. Drop me an email if you wanna try out a Crystalwell CPU and I'll send you one on your way.

Best regards, Xue Yao

On 26 Dec 2019, at 10:38 AM, 0x61 notifications@github.com wrote:



Thanks for posting this report.

Which branches did you try?

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[archfan]

I'd love to work on that. However I don't see your email here on github. Mine is ad-min@mailbox.org

I've tried the 4712HQ (not MQ) and it works perfectly.

Makes sense as it has the same iGPU as the MQ cpus.

[archfan]

The stock bios doesn't contain a specific Crystal Well microcode, yet seems to run just fine. Very interesting.

CPUID - Codename 306C1 - Haswell ES 306C2 - Haswell ES 306C3 - Haswell 40661 - Crystal Well

Nevertheless I will include the appropriate CW and HSW microcodes in my next releases. Can't hurt.

[dalao3]

The HD4600 is very slow when output to a 4K monitor. I want to upgrade, but I heard there is no DP output for Crystalwell cpu on T440p (https://comptoxguy0f47.blogspot.com/2019/03/thinkpad-t440pt540p-iris-pro-5200-gpu.html). Can coreboot fix this?

[mytbk]

Can you try https://review.coreboot.org/c/coreboot/+/41658 If there's still problem, please give me a log.

[mytbk]

My patch for Crystal Well has been merged upstream. I think it is solved now.

[JeffreyAbbinante]

Any update on this PR? I can't wait to Coreboot a 4980hq T440p.

[mytbk]

@JeffreyAbbinante You can use upstream coreboot commit 12a13e1f30a62513d1ade0cef1d5f815b5ddad65 or later. I have tested it on desktop board ASRock H81M-HDS. I don't have a T440p now, so I don't know whether it works.