SPMD: add support for an example SPM core manifest

This patch repurposes the TOS FW configuration file as the manifest for
the SPM core component which will reside at the secure EL adjacent to
EL3. The SPM dispatcher component will use the manifest to determine how
the core component must be initialised. Routines and data structure to
parse the manifest have also been added.

Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Artsem Artsemenka <artsem.artsemenka@arm.com>
Change-Id: Id94f8ece43b4e05609f0a1d364708a912f6203cb
diff --git a/common/desc_image_load.c b/common/desc_image_load.c
index f2e8f60..c8dd403 100644
--- a/common/desc_image_load.c
+++ b/common/desc_image_load.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -215,6 +215,9 @@
 	bl_params_node_t *params_node;
 	unsigned int fw_config_id;
 	uintptr_t hw_config_base = 0, fw_config_base;
+#if defined(SPD_spmd)
+	uint32_t fw_config_size = 0;
+#endif
 	bl_mem_params_node_t *mem_params;
 
 	assert(bl2_to_next_bl_params != NULL);
@@ -249,10 +252,14 @@
 
 		if (fw_config_id != INVALID_IMAGE_ID) {
 			mem_params = get_bl_mem_params_node(fw_config_id);
-			if (mem_params != NULL)
+			if (mem_params != NULL) {
 				fw_config_base = mem_params->image_info.image_base;
+#if defined(SPD_spmd)
+				fw_config_size =
+					mem_params->image_info.image_size;
+#endif
+			}
 		}
-
 		/*
 		 * Pass hw and tb_fw config addresses to next images. NOTE - for
 		 * EL3 runtime images (BL31 for AArch64 and BL32 for AArch32),
@@ -273,6 +280,11 @@
 			if (params_node->ep_info->args.arg1 == 0U)
 				params_node->ep_info->args.arg1 =
 								hw_config_base;
+#if defined(SPD_spmd)
+			if (params_node->ep_info->args.arg2 == 0U)
+				params_node->ep_info->args.arg2 =
+								fw_config_size;
+#endif
 		}
 	}
 }