FWU: Add Generic BL2U FWU image support in BL2
The Firmware Update (FWU) feature needs support for an optional
secure world image, BL2U, to allow additional secure world
initialization required by FWU, for example DDR initialization.
This patch adds generic framework support to create BL2U.
NOTE: A platform makefile must supply additional `BL2U_SOURCES`
to build the bl2u target. A subsequent patch adds bl2u
support for ARM platforms.
Change-Id: If2ce036199bb40b39b7f91a9332106bcd4e25413
diff --git a/Makefile b/Makefile
index d4fd26f..9ecbb5b 100644
--- a/Makefile
+++ b/Makefile
@@ -410,6 +410,11 @@
include bl2/bl2.mk
endif
+ifdef BL2U_SOURCES
+NEED_BL2U := yes
+include bl2u/bl2u.mk
+endif
+
ifdef BL31_SOURCES
# When booting an EL3 payload, there is no need to compile the BL31 image nor
# put it in the FIP.
@@ -467,6 +472,12 @@
$(eval $(call FIP_ADD_IMG,BL33,--bl33))
endif
+ifeq (${NEED_BL2U},yes)
+BL2U_PATH := $(if ${BL2U},${BL2U},$(call IMG_BIN,2u))
+$(if ${BL2U}, ,$(eval $(call MAKE_BL,2u)))
+$(eval $(call FWU_FIP_ADD_PAYLOAD,${BL2U_PATH},--bl2u))
+endif
+
locate-checkpatch:
ifndef CHECKPATCH
$(error "Please set CHECKPATCH to point to the Linux checkpatch.pl file, eg: CHECKPATCH=../linux/script/checkpatch.pl")
@@ -552,6 +563,7 @@
@echo " all Build all individual bootloader binaries"
@echo " bl1 Build the BL1 binary"
@echo " bl2 Build the BL2 binary"
+ @echo " bl2u Build the BL2U binary"
@echo " bl31 Build the BL3-1 binary"
@echo " bl32 Build the BL3-2 binary"
@echo " certificates Build the certificates (requires 'GENERATE_COT=1')"