spmd: skip loading of secure partitions on pre-v8.4 platforms

When SPD=spmd and SPMD_SPM_AT_SEL2=0, that is SPMC sits at S-EL1
then there is no need for TF-A to load secure partitions individually.
In this configuration, SPMC handles secure partition loading at
S-EL1/EL0 levels.
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I06a0d88a4811274a8c347ce57b56bb5f64e345df

Makefile

@@ -938,13 +938,18 @@ $(eval $(call add_define,USE_ARM_LINK))
 endif
 
 # Generate and include sp_gen.mk if SPD is spmd and SP_LAYOUT_FILE is defined
-ifdef SP_LAYOUT_FILE
 ifeq (${SPD},spmd)
+ifdef SP_LAYOUT_FILE
+        ifeq (${SPMD_SPM_AT_SEL2},0)
+            $(error "SPMD with SPM at S-EL1 does not require SP_LAYOUT_FILE")
+        endif
         -include $(BUILD_PLAT)/sp_gen.mk
         FIP_DEPS += sp
         NEED_SP_PKG := yes
 else
-        $(error "SP_LAYOUT_FILE will be used only if SPD=spmd")
+        ifeq (${SPMD_SPM_AT_SEL2},1)
+            $(error "SPMD with SPM at S-EL2 require SP_LAYOUT_FILE")
+        endif
 endif
 endif
 

plat/arm/common/arm_bl2_setup.c

@@ -205,7 +205,7 @@ int arm_bl2_handle_post_image_load(unsigned int image_id)
  ******************************************************************************/
 int arm_bl2_plat_handle_post_image_load(unsigned int image_id)
 {
-#if defined(SPD_spmd)
+#if defined(SPD_spmd) && SPMD_SPM_AT_SEL2
 	/* For Secure Partitions we don't need post processing */
 	if ((image_id >= (MAX_NUMBER_IDS - MAX_SP_IDS)) &&
 		(image_id < MAX_NUMBER_IDS)) {

plat/arm/common/arm_common.mk

@@ -183,7 +183,9 @@ else
 ARM_IO_SOURCES		+=	plat/arm/common/arm_fconf_io_storage.c		\
 				plat/arm/common/fconf/arm_fconf_io.c
 ifeq (${SPD},spmd)
-ARM_IO_SOURCES		+=	plat/arm/common/fconf/arm_fconf_sp.c
+    ifeq (${SPMD_SPM_AT_SEL2},1)
+         ARM_IO_SOURCES		+=	plat/arm/common/fconf/arm_fconf_sp.c
+    endif
 endif
 endif
 

plat/arm/common/arm_image_load.c

@@ -32,11 +32,11 @@ void plat_flush_next_bl_params(void)
 		next_bl_params_cpy_ptr);
 }
 
-#if defined(SPD_spmd)
+#if defined(SPD_spmd) && SPMD_SPM_AT_SEL2
 /*******************************************************************************
  * This function appends Secure Partitions to list of loadable images.
  ******************************************************************************/
-void plat_add_sp_images_load_info(struct bl_load_info *load_info)
+static void plat_add_sp_images_load_info(struct bl_load_info *load_info)
 {
 	bl_load_info_node_t *node_info = load_info->head;
 	unsigned int index = 0;
@@ -78,7 +78,7 @@ void plat_add_sp_images_load_info(struct bl_load_info *load_info)
  ******************************************************************************/
 struct bl_load_info *plat_get_bl_image_load_info(void)
 {
-#if defined(SPD_spmd)
+#if defined(SPD_spmd) && SPMD_SPM_AT_SEL2
 	bl_load_info_t *bl_load_info;
 
 	bl_load_info = get_bl_load_info_from_mem_params_desc();