feat(mops): enable FEAT_MOPS in EL3 when INIT_UNUSED_NS_EL2=1
FEAT_MOPS, mandatory from Arm v8.8, is typically managed in EL2.
However, in configurations where NS_EL2 is not enabled,
EL3 must set the HCRX_EL2.MSCEn bit to 1 to enable the feature.
This patch ensures FEAT_MOPS is enabled by setting HCRX_EL2.MSCEn to 1.
Change-Id: Ic4960e0cc14a44279156b79ded50de475b3b21c5
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c
index f220d8a..9b97685 100644
--- a/lib/el3_runtime/aarch64/context_mgmt.c
+++ b/lib/el3_runtime/aarch64/context_mgmt.c
@@ -883,6 +883,10 @@
sme_init_el2_unused();
}
+ if (is_feat_mops_supported()) {
+ write_hcrx_el2(read_hcrx_el2() | HCRX_EL2_MSCEn_BIT);
+ }
+
#if ENABLE_PAUTH
enable_pauth_el2();
#endif /* ENABLE_PAUTH */