feat(sme): enable SME functionality
This patch adds two new compile time options to enable SME in TF-A:
ENABLE_SME_FOR_NS and ENABLE_SME_FOR_SWD for use in non-secure and
secure worlds respectively. Setting ENABLE_SME_FOR_NS=1 will enable
SME for non-secure worlds and trap SME, SVE, and FPU/SIMD instructions
in secure context. Setting ENABLE_SME_FOR_SWD=1 will disable these
traps, but support for SME context management does not yet exist in
SPM so building with SPD=spmd will fail.
The existing ENABLE_SVE_FOR_NS and ENABLE_SVE_FOR_SWD options cannot
be used with SME as it is a superset of SVE and will enable SVE and
FPU/SIMD along with SME.
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Iaaac9d22fe37b4a92315207891da848a8fd0ed73
diff --git a/services/std_svc/spmd/spmd.mk b/services/std_svc/spmd/spmd.mk
index 73f7c85..8efbdc8 100644
--- a/services/std_svc/spmd/spmd.mk
+++ b/services/std_svc/spmd/spmd.mk
@@ -1,11 +1,15 @@
#
-# Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
ifneq (${ARCH},aarch64)
- $(error "Error: SPMD is only supported on aarch64.")
+ $(error "Error: SPMD is only supported on aarch64.")
+endif
+
+ifeq (${ENABLE_SME_FOR_NS},1)
+ $(error "Error: SPMD is not compatible with ENABLE_SME_FOR_NS")
endif
SPMD_SOURCES += $(addprefix services/std_svc/spmd/, \