commit 9272618cdead07733b317bb3089207f358a2af71
author Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Sat Mar 01 17:45:02 2025 +0000
committer Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Thu Apr 03 11:34:02 2025 +0100
tree 2d45c1eadb7dc823cc3e8cc80848f68dcb989723
parent fcb083e8ed93a7f0de37fb9efdf7bae33683e503

feat(tc): port BL2-BL31 interface to firmware handoff framework

Adding support for this framework at the handoff boundary between
firmware stage BL2 and BL31 on TC.

Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
Change-Id: I8e29b859e57a732e53f7532a5869ed4c8665b161

include/drivers/arm/css/css_scp.h

diff --git a/include/drivers/arm/css/css_scp.h b/include/drivers/arm/css/css_scp.h
index 5395546..c3ce1d6 100644
--- a/include/drivers/arm/css/css_scp.h
+++ b/include/drivers/arm/css/css_scp.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2025, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -45,8 +45,11 @@
 CASSERT(SCP_BL2_LIMIT <= BL2_BASE, assert_scp_bl2_overwrite_bl2);
 CASSERT(SCP_BL2U_LIMIT <= BL2_BASE, assert_scp_bl2u_overwrite_bl2);
 
+#if !TRANSFER_LIST
 CASSERT(SCP_BL2_BASE >= ARM_FW_CONFIG_LIMIT, assert_scp_bl2_overflow);
 CASSERT(SCP_BL2U_BASE >= ARM_FW_CONFIG_LIMIT, assert_scp_bl2u_overflow);
+#endif /* !TRANSFER_LIST */
+
 #endif
 
 #endif /* CSS_SCP_H */

plat/arm/board/tc/tc_bl2_setup.c

diff --git a/plat/arm/board/tc/tc_bl2_setup.c b/plat/arm/board/tc/tc_bl2_setup.c
index 74ef569..b5d3a1a 100644
--- a/plat/arm/board/tc/tc_bl2_setup.c
+++ b/plat/arm/board/tc/tc_bl2_setup.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, ARM Limited. All rights reserved.
+ * Copyright (c) 2021-2025, ARM Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -18,17 +18,26 @@
  ******************************************************************************/
 struct bl_params *plat_get_next_bl_params(void)
 {
-	struct bl_params *arm_bl_params = arm_get_next_bl_params();
-
-	const struct dyn_cfg_dtb_info_t *fw_config_info;
+	struct bl_params *arm_bl_params;
 	bl_mem_params_node_t *param_node;
-	uintptr_t fw_config_base = 0U;
-	entry_point_info_t *ep_info;
+	const struct dyn_cfg_dtb_info_t *fw_config_info __maybe_unused;
+	uintptr_t fw_config_base __maybe_unused;
+	entry_point_info_t *ep_info __maybe_unused;
+
+	arm_bl_params = arm_get_next_bl_params();
 
 	/* Get BL31 image node */
 	param_node = get_bl_mem_params_node(BL31_IMAGE_ID);
 	assert(param_node != NULL);
+#if TRANSFER_LIST
+	assert(arm_bl_params != NULL);
 
+	arm_bl_params->head = &param_node->params_node_mem;
+	arm_bl_params->head->ep_info = &param_node->ep_info;
+	arm_bl_params->head->image_id = param_node->image_id;
+
+	arm_bl2_setup_next_ep_info(param_node);
+#else
 	/* Get fw_config load address */
 	fw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, FW_CONFIG_ID);
 	assert(fw_config_info != NULL);
@@ -42,6 +51,7 @@
 	 */
 	ep_info = &param_node->ep_info;
 	ep_info->args.arg1 = (uint32_t)fw_config_base;
+#endif /* TRANSFER_LIST */
 
 	return arm_bl_params;
 }