[coreboot] ThinkPad X201 status?

[Marek Behun]

Hello,
this week I have been trying coreboot master and coreboot-4.5 on my
ThinkPad X201.
coreboot-4.5 does not work (display stays dark)
coreboot-master boots, is working, but:
  - when powering off, the system halts (display stays on), the cpu is
    in some kind of a loop since there is heat coming out from the fan
  - suspending to ram does not work: the same thing happens as when
    powering off, I have to manually disable it

Is there some commit that is known to be working?
Thank you.

MB