refactor(spm-mm): reorganize secure partition manager shim code
In preparation for adding the support for SEL0 SP in EL3 SPMC,
restructure the existing SPM_MM shim code in a way that allows reuse
of the code for both SPM_MM interface and FF-A EL3 SPMC interface. The
code for changing exception levels is identical for both.
With this restructuring of the code, the shim exception code is moved to
the common sub-directory.
Signed-off-by: Sayanta Pattanayak <sayanta.pattanayak@arm.com>
Signed-off-by: Nishant Sharma <nishant.sharma@arm.com>
Change-Id: Iadda9cf73f12b56e6a1d31fc21b5ba5dc355867f
diff --git a/services/std_svc/spm/spm_mm/aarch64/spm_mm_shim_exceptions.S b/services/std_svc/spm/common/aarch64/spm_shim_exceptions.S
similarity index 100%
rename from services/std_svc/spm/spm_mm/aarch64/spm_mm_shim_exceptions.S
rename to services/std_svc/spm/common/aarch64/spm_shim_exceptions.S
diff --git a/services/std_svc/spm/spm_mm/spm_mm_shim_private.h b/services/std_svc/spm/common/include/spm_shim_private.h
similarity index 75%
rename from services/std_svc/spm/spm_mm/spm_mm_shim_private.h
rename to services/std_svc/spm/common/include/spm_shim_private.h
index f69c748..bcb1147 100644
--- a/services/std_svc/spm/spm_mm/spm_mm_shim_private.h
+++ b/services/std_svc/spm/common/include/spm_shim_private.h
@@ -1,11 +1,11 @@
/*
- * Copyright (c) 2017-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2023, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
-#ifndef SPM_MM_SHIM_PRIVATE_H
-#define SPM_MM_SHIM_PRIVATE_H
+#ifndef SPM_SHIM_PRIVATE_H
+#define SPM_SHIM_PRIVATE_H
#include <stdint.h>
@@ -23,4 +23,4 @@
#define SPM_SHIM_EXCEPTIONS_SIZE \
(SPM_SHIM_EXCEPTIONS_END - SPM_SHIM_EXCEPTIONS_START)
-#endif /* SPM_MM_SHIM_PRIVATE_H */
+#endif /* SPM_SHIM_PRIVATE_H */
diff --git a/services/std_svc/spm/common/spm.mk b/services/std_svc/spm/common/spm.mk
index 9aa96be..9491240 100644
--- a/services/std_svc/spm/common/spm.mk
+++ b/services/std_svc/spm/common/spm.mk
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2022-2023, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -10,8 +10,9 @@
INCLUDES += -Iservices/std_svc/spm/common/include
-SPM_SOURCES := $(addprefix services/std_svc/spm/common/,\
- ${ARCH}/spm_helpers.S)
+SPM_SOURCES := $(addprefix services/std_svc/spm/common/, \
+ ${ARCH}/spm_helpers.S \
+ ${ARCH}/spm_shim_exceptions.S)
# Let the top-level Makefile know that we intend to include a BL32 image
NEED_BL32 := yes
diff --git a/services/std_svc/spm/spm_mm/spm_mm.mk b/services/std_svc/spm/spm_mm/spm_mm.mk
index 513e8ef..cbc7940 100644
--- a/services/std_svc/spm/spm_mm/spm_mm.mk
+++ b/services/std_svc/spm/spm_mm/spm_mm.mk
@@ -21,7 +21,6 @@
endif
SPM_MM_SOURCES := $(addprefix services/std_svc/spm/spm_mm/, \
- ${ARCH}/spm_mm_shim_exceptions.S \
spm_mm_main.c \
spm_mm_setup.c \
spm_mm_xlat.c)
diff --git a/services/std_svc/spm/spm_mm/spm_mm_setup.c b/services/std_svc/spm/spm_mm/spm_mm_setup.c
index 04dc212..4e65c9c 100644
--- a/services/std_svc/spm/spm_mm/spm_mm_setup.c
+++ b/services/std_svc/spm/spm_mm/spm_mm_setup.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2023, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2021, NVIDIA Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
@@ -21,7 +21,7 @@
#include "spm_common.h"
#include "spm_mm_private.h"
-#include "spm_mm_shim_private.h"
+#include "spm_shim_private.h"
/* Setup context of the Secure Partition */
void spm_sp_setup(sp_context_t *sp_ctx)
diff --git a/services/std_svc/spm/spm_mm/spm_mm_xlat.c b/services/std_svc/spm/spm_mm/spm_mm_xlat.c
index b1ca55a..858ca1b 100644
--- a/services/std_svc/spm/spm_mm/spm_mm_xlat.c
+++ b/services/std_svc/spm/spm_mm/spm_mm_xlat.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -15,7 +15,7 @@
#include <services/spm_mm_svc.h>
#include "spm_mm_private.h"
-#include "spm_mm_shim_private.h"
+#include "spm_shim_private.h"
/* Place translation tables by default along with the ones used by BL31. */
#ifndef PLAT_SP_IMAGE_XLAT_SECTION_NAME