Coreboot is enabling PECI on these CPUs which, according to Intel erratum, must
only be done after loading microcode updates, otherwise the CPUID feature set
becomes corrupted. That's my understanding, and I think this is why SpeedStep
is broken. To be specific, it could but but operating systems no longer detect
that the feature is supported. In any case, belgin on IRC found the commit in
coreboot, after a bisect, enabling PECI. This commit in Libreboot adds a patch,
reverting coreboot's PECI patch.
tianocore is a liability for the libreboot project. it's a bloated mess, and
unreliable, broken on many boards, and basically impossible to audit.
i don't trust tianocore, so i'm removing it.
4mb and 8mb users can just pad their roms to 16mb, using the instructions on
<https://libreboot.org/faq.html#how-do-i-pad-a-rom-before-flashing>
maintaining them in lbmk is a waste of time, and also a hazard because it's a
lot of duplicated labour when making any changes, which could result in awful
mistakes being made
mitigate missing characters in unifont for border/arrow characters. this saves
space because now it is no longer necessary to add a custom font
the background added has the libreboot logo on it, and it's 10kb in size unlike
the old gnulove background that was hundreds of KB
These option ROMs are known to cause a system hang. If you insert an empty
option ROM into CBFS, it disables any option ROM loading for those devices
when using SeaBIOS.
This fixes issue 3:
https://notabug.org/libreboot/lbmk/issues/3
In this issue, GM45 laptops such as X200/T400 will hang on reboot (normal boot
works, and shutting down works too).
2MiB and 16MiB were the only flash sizes supported. 4 and 8MiB have been
added.
Now there are only libgfxinit_txtmode configs.
Use seabios_withgrub or seabios_grubfirst ROMs if you wish to use an add-on
GPU.
this is forked from the "libre" branch in osboot, which is itself a libre,
deblobbed fork of osboot, a blobbed up fork of libreboot
libreboot needed to be purged clean. this is the new libreboot development
repository. the old one has been abandoned
Leah Rowe