Merge pull request #750 from jwerner-chromium/m0_build

RK3399 M0 build system improvements

plat/rockchip/rk3399/drivers/m0/Makefile

@@ -39,16 +39,11 @@ PLAT_M0		?= rk3399m0
 
 ifeq (${V},0)
 	Q=@
-	CHECKCODE_ARGS	+= --no-summary --terse
 else
 	Q=
 endif
 export Q
 
-# All PHONY definition
-.PHONY: all clean distclean ${ARCH}
-all: ${ARCH}
-
 .SUFFIXES:
 
 INCLUDES		+= -Iinclude/
@@ -86,22 +81,21 @@ define SOURCES_TO_OBJS
 	$(notdir $(patsubst %.S,%.o,$(filter %.S,$(1))))
 endef
 
-BUILD_DIR		:= ${BUILD_PLAT}/obj
-BIN_DIR 		:= ${BUILD_PLAT}/bin
 SOURCES 		:= $(C_SOURCES)
-OBJS 			:= $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES)))
+OBJS 			:= $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES)))
 LINKERFILE		:= src/rk3399m0.ld
-MAPFILE			:= $(BIN_DIR)/$(PLAT_M0).map
-ELF 			:= $(BIN_DIR)/$(PLAT_M0).elf
-BIN 			:= $(BIN_DIR)/$(PLAT_M0).bin
+MAPFILE			:= $(BUILD)/$(PLAT_M0).map
+ELF 			:= $(BUILD)/$(PLAT_M0).elf
+BIN 			:= $(BUILD)/$(PLAT_M0).bin
 
 # Function definition related compilation
 define MAKE_C
 $(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2))))
+-include $(patsubst %.o,%.d,$(OBJ))
 
 $(OBJ) : $(2)
 	@echo "  CC      $$<"
-	$$(Q)$$(CC) $$(CFLAGS) $$(INCLUDES) -c $$< -o $$@
+	$$(Q)$$(CC) $$(CFLAGS) $$(INCLUDES) -MMD -MT $$@ -c $$< -o $$@
 endef
 
 define MAKE_S
@@ -124,11 +118,8 @@ define MAKE_OBJS
 	$(and $(REMAIN),$(error Unexpected source files present: $(REMAIN)))
 endef
 
-$(BIN_DIR) :
-	$(Q)mkdir -p "$@"
-
-$(BUILD_DIR) : $(BIN_DIR)
-	$(Q)mkdir -p "$@"
+.PHONY: all
+all: $(BIN)
 
 $(ELF) : $(OBJS) $(LINKERFILE)
 	@echo "  LD      $@"
@@ -139,18 +130,4 @@ $(BIN) : $(ELF)
 	@echo "  BIN     $@"
 	$(Q)$(OC) -O binary $< $@
 
-.PHONY : ${ARCH}
-${ARCH} : $(BUILD_DIR) $(BIN)
-
-$(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1)))
-
-# Other common compilation entries
-clean:
-	@echo "  CLEAN"
-	${Q}rm -rf ${BUILD_BASE}/${PLAT_M0}
-	${Q}rm -rf ${VER_BIN_DIR}/$(PLAT_M0)*
-
-distclean:
-	@echo "  DISTCLEAN"
-	${Q}rm -rf ${BUILD_BASE}/${PLAT_M0}
-	${Q}rm -rf ${VER_BIN_DIR}/$(PLAT_M0)*
+$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES),$(1)))

plat/rockchip/rk3399/platform.mk

@@ -90,8 +90,9 @@ $(eval $(call add_define,PLAT_EXTRA_LD_SCRIPT))
 
 # M0 source build
 PLAT_M0                 :=      ${PLAT}m0
+BUILD_M0		:=	${BUILD_PLAT}/m0
 
-RK3399M0FW=${BUILD_PLAT}/m0/bin/${PLAT_M0}.bin
+RK3399M0FW=${BUILD_M0}/${PLAT_M0}.bin
 $(eval $(call add_define,RK3399M0FW))
 
 # CCACHE_EXTRAFILES is needed because ccache doesn't handle .incbin
@@ -99,7 +100,7 @@ export CCACHE_EXTRAFILES
 ${BUILD_PLAT}/bl31/pmu_fw.o: CCACHE_EXTRAFILES=$(RK3399M0FW)
 ${RK_PLAT_SOC}/drivers/pmu/pmu_fw.c: $(RK3399M0FW)
 
+$(eval $(call MAKE_PREREQ_DIR,${BUILD_M0},))
 .PHONY: $(RK3399M0FW)
-$(RK3399M0FW):
-	$(MAKE) -C ${RK_PLAT_SOC}/drivers/m0 \
-		BUILD_PLAT=$(abspath ${BUILD_PLAT}/m0)
+$(RK3399M0FW): | ${BUILD_M0}
+	$(MAKE) -C ${RK_PLAT_SOC}/drivers/m0 BUILD=$(abspath ${BUILD_PLAT}/m0)