arm64: dts: qcom: sc8280xp: Add EL2 overlay for WoA devices

Browse source

WoA devices using sc8280xp use android firmware to boot, which notably
includes QHEE hypervisor. This means that, so far, Linux-based OS could
only boot in EL1 on those devices.

However Windows can replace QHEE upon boot with it's own hypervisor, and
with the use of tools such as "slbounce", it's possible to do the same
for Linux-based OS, in which case some modifications to the DT are
necessary to facilitate the absence of QHEE services.

Add a EL2-specific DT overlay and apply it to sc8280xp WoA devices to
create -el2.dtb for each of them alongside "normal" dtb.

Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Link: https://lore.kernel.org/r/20250503-sc-el2-overlays-v2-3-24e9b4572e15@trvn.ru
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

...

This commit is contained in:

Nikita Travkin 2025-05-03 15:39:30 +05:00 • committed by Bjorn Andersson

parent 8a40113500

commit 263780f318

2 changed files with 54 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

arch/arm64/boot/dts/qcom/Makefile

View file

44

arch/arm64/boot/dts/qcom/sc8280xp-el2.dtso

View file