Enable MTE support
Enable MTE support by adding memory tag option in Makefile
This option is available only when ARMv8.5-MemTag is implemented
MTE options are added in latest clang and armclang compiler which
support below options:
for clang <version 11.0.0>
1. -march=arm8.5-a+memtag
2. -fsanitize=memtag
for armclang <version 6.12>
1. -march=arm8.5-a+memtag
2. -mmemtag-stack
Set the option SUPPORT_STACK_MEMTAG=yes to enable memory stack tagging.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I4e0bbde4e9769ce03ead6f550158e22f32c1c413
diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index 4e968e2..590a800 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -288,3 +288,8 @@
# S-EL2 firmware entry/exit. This flag is to be used with SPD=spmd option.
# Default is 0.
CTX_INCLUDE_EL2_REGS := 0
+
+# Enable Memory tag extension which is supported for architecture greater
+# than Armv8.5-A
+# By default it is set to "no"
+SUPPORT_STACK_MEMTAG := no