feat(cpufeat): enable FEAT_SVE for FEAT_STATE_CHECKED
Add support for runtime detection (ENABLE_SVE_FOR_NS=2), by splitting
sve_supported() into an ID register reading function and a
second function to report the support status. That function considers
both build time settings and runtime information (if needed), and is
used before we do SVE specific setup.
Change the FVP platform default to the now supported dynamic
option (=2), so the right decision can be made by the code at runtime.
Change-Id: I1caaba2216e8e2a651452254944a003607503216
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
diff --git a/services/std_svc/rmmd/rmmd_main.c b/services/std_svc/rmmd/rmmd_main.c
index e12eae7..24f6c41 100644
--- a/services/std_svc/rmmd/rmmd_main.c
+++ b/services/std_svc/rmmd/rmmd_main.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2021-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -117,19 +117,14 @@
******************************************************************************/
static void manage_extensions_realm(cpu_context_t *ctx)
{
-#if ENABLE_SVE_FOR_NS
+ if (is_feat_sve_supported()) {
/*
* Enable SVE and FPU in realm context when it is enabled for NS.
* Realm manager must ensure that the SVE and FPU register
* contexts are properly managed.
*/
- sve_enable(ctx);
-#else
- /*
- * Disable SVE and FPU in realm context when it is disabled for NS.
- */
- sve_disable(ctx);
-#endif /* ENABLE_SVE_FOR_NS */
+ sve_enable(ctx);
+ }
}
/*******************************************************************************
diff --git a/services/std_svc/spm/spm_mm/spm_mm.mk b/services/std_svc/spm/spm_mm/spm_mm.mk
index b1f045e..513e8ef 100644
--- a/services/std_svc/spm/spm_mm/spm_mm.mk
+++ b/services/std_svc/spm/spm_mm/spm_mm.mk
@@ -10,7 +10,7 @@
ifneq (${ARCH},aarch64)
$(error "Error: SPM_MM is only supported on aarch64.")
endif
-ifeq (${ENABLE_SVE_FOR_NS},1)
+ifneq (${ENABLE_SVE_FOR_NS},0)
$(error "Error: SPM_MM is not compatible with ENABLE_SVE_FOR_NS")
endif
ifneq (${ENABLE_SME_FOR_NS},0)