3 files changed, 58 insertions, 5 deletions
diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk
index 7531f6d80..a4fbc5ac2 100644
--- a/make_helpers/build_macros.mk
+++ b/make_helpers/build_macros.mk
@@ -101,7 +101,7 @@ endef
 # FIP_ADD_PAYLOAD appends the command line arguments required by fiptool
 # to package a new payload. Optionally, it adds the dependency on this payload
 #   $(1) = payload filename (i.e. bl31.bin)
-#   $(2) = command line option for the specified payload (i.e. --bl31)
+#   $(2) = command line option for the specified payload (i.e. --soc-fw)
 #   $(3) = fip target dependency (optional) (i.e. bl31)
 define FIP_ADD_PAYLOAD
     $(eval FIP_ARGS += $(2) $(1))
@@ -121,14 +121,15 @@ endef
 # using a build option. It also adds a dependency on the image file, aborting
 # the build if the file does not exist.
 #   $(1) = build option to specify the image filename (SCP_BL2, BL33, etc)
-#   $(2) = command line option for fiptool (scp_bl2, bl33, etc)
+#   $(2) = command line option for fiptool (--scp-fw, --nt-fw, etc)
 # Example:
-#   $(eval $(call FIP_ADD_IMG,BL33,--bl33))
+#   $(eval $(call FIP_ADD_IMG,BL33,--nt-fw))
 define FIP_ADD_IMG
     CRT_DEPS += check_$(1)
     FIP_DEPS += check_$(1)
     $(call FIP_ADD_PAYLOAD,$(value $(1)),$(2))
 
+.PHONY: check_$(1)
 check_$(1):
 	$$(if $(value $(1)),,$$(error "Platform '${PLAT}' requires $(1). Please set $(1) to point to the right file"))
 endef
@@ -154,14 +155,15 @@ endef
 
 # FWU_FIP_ADD_IMG allows the platform to pack a binary image in the FWU FIP
 #   $(1) build option to specify the image filename (BL2U, NS_BL2U, etc)
-#   $(2) command line option for fiptool (bl2u, ns_bl2u, etc)
+#   $(2) command line option for fiptool (--ap-fwu-cfg, --fwu, etc)
 # Example:
-#   $(eval $(call FWU_FIP_ADD_IMG,BL2U,--bl2u))
+#   $(eval $(call FWU_FIP_ADD_IMG,BL2U,--ap-fwu-cfg))
 define FWU_FIP_ADD_IMG
     FWU_CRT_DEPS += check_$(1)
     FWU_FIP_DEPS += check_$(1)
     $(call FWU_FIP_ADD_PAYLOAD,$(value $(1)),$(2))
 
+.PHONY: check_$(1)
 check_$(1):
 	$$(if $(value $(1)),,$$(error "Platform '${PLAT}' requires $(1). Please set $(1) to point to the right file"))
 endef
@@ -336,3 +338,49 @@ $(eval $(call MAKE_TOOL_ARGS,$(1),$(BIN),$(2)))
 
 endef
 
+define SOURCES_TO_DTBS
+        $(notdir $(patsubst %.dts,%.dtb,$(filter %.dts,$(1))))
+endef
+
+# MAKE_FDT macro defines the targets and options to build each FDT binary
+# Arguments: (none)
+define MAKE_FDT
+        $(eval DTB_BUILD_DIR  := ${BUILD_PLAT}/fdts)
+        $(eval DTBS       := $(addprefix $(DTB_BUILD_DIR)/,$(call SOURCES_TO_DTBS,$(FDT_SOURCES))))
+        $(eval TEMP_DTB_DIRS := $(sort $(dir ${DTBS})))
+        # The $(dir ) function leaves a trailing / on the directory names
+        # Rip off the / to match directory names with make rule targets.
+        $(eval DTB_DIRS   := $(patsubst %/,%,$(TEMP_DTB_DIRS)))
+
+$(eval $(foreach objd,${DTB_DIRS},$(call MAKE_PREREQ_DIR,${objd},${BUILD_DIR})))
+
+fdt_dirs: ${DTB_DIRS}
+
+endef
+
+# MAKE_DTB generate the Flattened device tree binary (device tree binary)
+#   $(1) = output directory
+#   $(2) = input dts
+define MAKE_DTB
+
+$(eval DOBJ := $(1)/$(patsubst %.dts,%.dtb,$(notdir $(2))))
+$(eval DEP := $(patsubst %.dtb,%.d,$(DOBJ)))
+
+$(DOBJ): $(2) | fdt_dirs
+	@echo "  DTC      $$<"
+	$$(Q)$$(DTC) $$(DTC_FLAGS) -d $(DEP) -o $$@ $$<
+
+-include $(DEP)
+
+endef
+
+# MAKE_DTBS builds flattened device tree sources
+#   $(1) = output directory
+#   $(2) = list of flattened device tree source files
+define MAKE_DTBS
+        $(eval DOBJS := $(filter %.dts,$(2)))
+        $(eval REMAIN := $(filter-out %.dts,$(2)))
+        $(eval $(foreach obj,$(DOBJS),$(call MAKE_DTB,$(1),$(obj))))
+
+        $(and $(REMAIN),$(error Unexpected s present: $(REMAIN)))
+endef
diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index eb1bb0aea..a80a4915a 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -27,6 +27,9 @@ ARM_GIC_ARCH			:= 2
 # Base commit to perform code check on
 BASE_COMMIT			:= origin/master
 
+# Execute BL2 at EL3
+BL2_AT_EL3			:= 0
+
 # By default, consider that the platform may release several CPUs out of reset.
 # The platform Makefile is free to override this value.
 COLD_BOOT_SINGLE_CPU		:= 0
diff --git a/make_helpers/tbbr/tbbr_tools.mk b/make_helpers/tbbr/tbbr_tools.mk
index 6e6e27396..cda8d7266 100644
--- a/make_helpers/tbbr/tbbr_tools.mk
+++ b/make_helpers/tbbr/tbbr_tools.mk
@@ -64,7 +64,9 @@ $(if ${NON_TRUSTED_WORLD_KEY},$(eval $(call CERT_ADD_CMD_OPT,${NON_TRUSTED_WORLD
 $(if ${BL2},$(eval $(call CERT_ADD_CMD_OPT,${BL2},--tb-fw,true)),\
             $(eval $(call CERT_ADD_CMD_OPT,$(call IMG_BIN,2),--tb-fw,true)))
 $(eval $(call CERT_ADD_CMD_OPT,${BUILD_PLAT}/tb_fw.crt,--tb-fw-cert))
+ifeq (${BL2_AT_EL3}, 0)
 $(eval $(call FIP_ADD_PAYLOAD,${BUILD_PLAT}/tb_fw.crt,--tb-fw-cert))
+endif
 
 # Add the SCP_BL2 CoT (key cert + img cert + image)
 ifneq (${SCP_BL2},)