tree e150a40f8b7d12cda433802c17518fac45e95ead
parent e0c2b73694cca63d1ad41421ed2906b2fcc2ef19
author Boyan Karatotev <boyan.karatotev@arm.com> 1743004495 +0000
committer Boyan Karatotev <boyan.karatotev@arm.com> 1744621082 +0100

feat(cpufeat): enable FEAT_BTI to FEAT_STATE_CHECKED

Introduce the is_feat_bti_{supported, present}() helpers and replace
checks for ENABLE_BTI with it. Also factor out the setting of
SCTLR_EL3.BT out of the PAuth enablement and place it in the respective
entrypoints where we initialise SCTLR_EL3. This makes PAuth
self-contained and SCTLR_EL3 initialisation centralised.

Change-Id: I0c0657ff1e78a9652cd2cf1603478283dc01f17b
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>