commit a5566f65fd1be689ca5c63baa1f5b61b40960c8d
author Harrison Mutai <harrison.mutai@arm.com> Fri Dec 01 15:50:00 2023 +0000
committer Harrison Mutai <harrison.mutai@arm.com> Fri Apr 26 09:00:12 2024 +0000
tree ff7c86845f27ba0bbff93d101362c5918a01bf85
parent 56b263cb2a25892038761acea8c2b57a638d19bf

feat(arm): support FW handoff b/w BL2 & BL31

Add support for the firmware handoff framework between BL2 and BL31.
Create a transfer list in trusted SRAM, leveraging the larger SRAM sizes
in recent models. Load the HW_CONFIG as a TE along with entry point
parameters for BL31 execution.

Change-Id: I7c4c6e8353ca978a13520fb3e15fb2803f0f1d0e
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>

plat/arm/board/fvp/fvp_common.c

diff --git a/plat/arm/board/fvp/fvp_common.c b/plat/arm/board/fvp/fvp_common.c
index 8cbf10e..5557d59 100644
--- a/plat/arm/board/fvp/fvp_common.c
+++ b/plat/arm/board/fvp/fvp_common.c
@@ -81,9 +81,14 @@
 
 #if TRANSFER_LIST
 #ifdef FW_NS_HANDOFF_BASE
-#define MAP_FW_NS_HANDOFF MAP_REGION_FLAT(FW_NS_HANDOFF_BASE, \
-					  FW_HANDOFF_SIZE,    \
-					  MT_MEMORY | MT_RW | MT_NS)
+#define MAP_FW_NS_HANDOFF                                             \
+	MAP_REGION_FLAT(FW_NS_HANDOFF_BASE, PLAT_ARM_FW_HANDOFF_SIZE, \
+			MT_MEMORY | MT_RW | MT_NS)
+#endif
+#ifdef PLAT_ARM_EL3_FW_HANDOFF_BASE
+#define MAP_EL3_FW_HANDOFF                            \
+	MAP_REGION_FLAT(PLAT_ARM_EL3_FW_HANDOFF_BASE, \
+			PLAT_ARM_FW_HANDOFF_SIZE, MT_MEMORY | MT_RW | EL3_PAS)
 #endif
 #endif
 
@@ -165,7 +170,10 @@
 	ARM_MAP_OPTEE_CORE_MEM,
 	ARM_OPTEE_PAGEABLE_LOAD_MEM,
 #endif
-	{0}
+#ifdef MAP_EL3_FW_HANDOFF
+	MAP_EL3_FW_HANDOFF,
+#endif
+	{ 0 }
 };
 #endif
 #ifdef IMAGE_BL2U
@@ -202,7 +210,10 @@
 #ifdef MAP_FW_NS_HANDOFF
 	MAP_FW_NS_HANDOFF,
 #endif
-	{0}
+#ifdef MAP_EL3_FW_HANDOFF
+	MAP_EL3_FW_HANDOFF,
+#endif
+	{ 0 }
 };
 
 #if defined(IMAGE_BL31) && SPM_MM