Re: [PATCH v4 0/8] firmware: qcom: enable UEFI variables on Lenovo Yoga C630

[Birk Skyum <birk.skyum@pm.me>]

Hi Dmitry,

I've been carrying patches 1-7 of this series in Omarchy's arm64 kernel,
rebased onto 7.3, for the reason Tobias gave. Every laptop we add needed
a qcom_scm patch on top of its device tree. On top of the series, our
table also lists qcom,glymur and qcom,mahua.

Tested on a Lenovo Yoga Slim 7x (X1E80100). The series takes
lenovo,yoga-slim7x off the table, so QSEECOM comes up only through the
qcom,x1e80100 entry:

- By default, uefisecapp comes up with the same 118 variables as
  before, efibootmgr reads the boot order, the RTC gets its offset, and
  a test variable can be written, read back and deleted.
- With qcom_scm.qseecom=off, QSEECOM stays off and the laptop boots
  without UEFI variables.
- With qcom_scm.qseecom=roefivars, the variables are readable, efivarfs
  is mounted read-only, writes are refused, and hwclock --systohc
  returns without an oops.

Tested-by: Birk Skyum <birk.skyum@pm.me> # Lenovo Yoga Slim 7x

Is a v5 planned? I'd be glad to test it.

Birk