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authorVarun Wadekar <vwadekar@nvidia.com>2020-06-12 10:11:28 -0700
committerVarun Wadekar <vwadekar@nvidia.com>2020-06-12 10:20:11 -0700
commitfbc44bd1bbbafe01848afd009d507b595b264b5f (patch)
tree67431f3739b10391c78b582f53c371f3ef41d1c8 /Makefile
parent0d8511953e19a5da80ac1a0ed9ec8e76b57a33a8 (diff)
downloadtrusted-firmware-a-fbc44bd1bbbafe01848afd009d507b595b264b5f.tar.gz
Prevent RAS register access from lower ELs
This patch adds a build config 'RAS_TRAP_LOWER_EL_ERR_ACCESS' to set SCR_EL3.TERR during CPU boot. This bit enables trapping RAS register accesses from EL1 or EL2 to EL3. RAS_TRAP_LOWER_EL_ERR_ACCESS is disabled by default. Signed-off-by: Varun Wadekar <vwadekar@nvidia.com> Change-Id: Ifb0fb0afedea7dd2a29a0b0491a1161ecd241438
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index a0d2ae066b..bc5604be24 100644
--- a/Makefile
+++ b/Makefile
@@ -900,6 +900,7 @@ $(eval $(call assert_boolean,USE_SPINLOCK_CAS))
$(eval $(call assert_boolean,ENCRYPT_BL31))
$(eval $(call assert_boolean,ENCRYPT_BL32))
$(eval $(call assert_boolean,ERRATA_SPECULATIVE_AT))
+$(eval $(call assert_boolean,RAS_TRAP_LOWER_EL_ERR_ACCESS))
$(eval $(call assert_numeric,ARM_ARCH_MAJOR))
$(eval $(call assert_numeric,ARM_ARCH_MINOR))
@@ -979,6 +980,7 @@ $(eval $(call add_define,BL2_IN_XIP_MEM))
$(eval $(call add_define,BL2_INV_DCACHE))
$(eval $(call add_define,USE_SPINLOCK_CAS))
$(eval $(call add_define,ERRATA_SPECULATIVE_AT))
+$(eval $(call add_define,RAS_TRAP_LOWER_EL_ERR_ACCESS))
ifeq (${SANITIZE_UB},trap)
$(eval $(call add_define,MONITOR_TRAPS))