feat(trbe): enable access to trace buffer control registers from lower NS EL
Introduced a build flag 'ENABLE_TRBE_FOR_NS' to enable trace buffer
control registers access in NS-EL2, or NS-EL1 (when NS-EL2 is
implemented but unused).
Change-Id: I285a672ccd395eebd377714c992bb21062a729cc
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index 72f84b5..e95d226 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -355,3 +355,14 @@
# Disable Firmware update support by default
PSA_FWU_SUPPORT := 0
+
+# By default, disable access of trace buffer control registers from NS
+# lower ELs i.e. NS-EL2, or NS-EL1 if NS-EL2 implemented but unused
+# if FEAT_TRBE is implemented.
+# Note FEAT_TRBE is only supported on AArch64 - therefore do not enable in
+# AArch32.
+ifneq (${ARCH},aarch32)
+ ENABLE_TRBE_FOR_NS := 0
+else
+ override ENABLE_TRBE_FOR_NS := 0
+endif