commit f3e8cfc506e41b94294908b924876613e5f385f2
author Andre Przywara <andre.przywara@arm.com> Thu Nov 17 16:42:09 2022 +0000
committer Andre Przywara <andre.przywara@arm.com> Mon Mar 20 13:37:36 2023 +0000
tree 831ab1562452ab1700c3e40684dd871fb4deb083
parent 30661a98818247896dc7002c47169fa3b4776c90

refactor(spe): enable FEAT_SPE for FEAT_STATE_CHECKED

At the moment we only support FEAT_SPE to be either unconditionally
compiled in, or to be not supported at all.

Add support for runtime detection (ENABLE_SPE_FOR_NS=2), by splitting
is_armv8_2_feat_spe_present() into an ID register reading function and
a second function to report the support status. That function considers
both build time settings and runtime information (if needed), and is
used before we access SPE related registers.

Previously SPE was enabled unconditionally for all platforms, change
this now to the runtime detection version.

Change-Id: I830c094107ce6a398bf1f4aef7ffcb79d4f36552
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Makefile

diff --git a/Makefile b/Makefile
index 16279b6..797b2cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1096,7 +1096,6 @@
         ENABLE_RUNTIME_INSTRUMENTATION \
         ENABLE_SME_FOR_NS \
         ENABLE_SME_FOR_SWD \
-        ENABLE_SPE_FOR_NS \
         ENABLE_SVE_FOR_NS \
         ENABLE_SVE_FOR_SWD \
         ERROR_DEPRECATED \
@@ -1182,6 +1181,7 @@
         ENABLE_FEAT_VHE \
         ENABLE_MPAM_FOR_LOWER_ELS \
         ENABLE_RME \
+        ENABLE_SPE_FOR_NS \
         ENABLE_TRF_FOR_NS \
         FW_ENC_STATUS \
         NR_OF_FW_BANKS \