feat(sme): enable SME2 functionality for NS world
FEAT_SME2 is an extension of FEAT_SME and an optional feature
from v9.2. Its an extension of SME, wherein it not only
processes matrix operations efficiently, but also provides
outer-product instructions to accelerate matrix operations.
It affords instructions for multi-vector operations.
Further, it adds an 512 bit architectural register ZT0.
This patch implements all the changes introduced with FEAT_SME2
to ensure that the instructions are allowed to access ZT0
register from Non-secure lower exception levels.
Additionally, it adds support to ensure FEAT_SME2 is aligned
with the existing FEATURE DETECTION mechanism, and documented.
Change-Id: Iee0f61943304a9cfc3db8f986047b1321d0a6463
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
diff --git a/common/feat_detect.c b/common/feat_detect.c
index c8a0703..eb4db95 100644
--- a/common/feat_detect.c
+++ b/common/feat_detect.c
@@ -218,6 +218,8 @@
/* v9.2 features */
check_feature(ENABLE_SME_FOR_NS, read_feat_sme_id_field(),
"SME", 1, 2);
+ check_feature(ENABLE_SME2_FOR_NS, read_feat_sme_id_field(),
+ "SME2", 2, 2);
/* v9.4 features */
check_feature(ENABLE_FEAT_GCS, read_feat_gcs_id_field(), "GCS", 1, 1);