Issue #401 has been updated by Sean Rhodes.

Akura Ryu wrote in #note-8:
> I've met the same problem on my ThinkPad X200.
> 
> I enabled EDK2, and also applied SeaBIOS as secondary payload. It cannot boot 
> as well: freezes, and screen remains black.
> 
> Is there any options to obtain logs from coreboot?

You can't use edk2 and a secondary payload. The X200s were all tested recently 
with MrChromeboxs fork and all working - so if you enable that on master, you 
shouldn't have any issues.



Nicholas Chin wrote in #note-9:
> Akura Ryu wrote in #note-8:
> > I've met the same problem on my ThinkPad X200.
> > 
> > I enabled EDK2, and also applied SeaBIOS as secondary payload. It cannot 
> > boot as well: freezes, and screen remains black.
> > 
> > Is there any options to obtain logs from coreboot?
> 
> From what I remember someone saying, edk2 uses HPET in a way that is 
> incompatible with Core 2 systems such as the X200. I have the same issue as 
> you on my Latitude E6400. So that is probably a separate issue.

This is something different, and a fix is in the works so I'll close this issue.

----------------------------------------
Bug #401: edk2 hangs indefiniately 
https://ticket.coreboot.org/issues/401#change-1199

* Author: Sean Rhodes
* Status: New
* Priority: Normal
* Assignee: Arthur Heymans
* Category: board support
* Target version: none
* Start date: 2022-07-08
* Affected versions: master
* Affected hardware: Everything
* Affected OS: Doesn't matter
----------------------------------------
Since CB:63555, edk2 will no longer boot and hangs indefiniately

Various forks disable MTRR programming in edk2 (such as 
https://github.com/MrChromebox/edk2/commit/d641ea6920737fd9b9a94210e9a2e7636bfb3cdc)
 but this shouldn't be done as it breaks spec.

Workarounds are to revert CB:64804, CB:63550, CB:64803 and CB:63555.

---Files--------------------------------
with_avph_patch.txt (65.8 KB)
with_avph_patch_reverted.txt (64.6 KB)
master.txt (91.9 KB)
master_w_revert.txt (197 KB)
edk2.txt (251 KB)


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