#############################################################
#
# U-Boot
#
#############################################################
U_BOOT_VERSION:=$(strip $(subst ",,$(BR2_UBOOT_VERSION)))
#"))

U_BOOT_SOURCE:=u-boot-$(U_BOOT_VERSION).tar.bz2
U_BOOT_SITE:=ftp://ftp.denx.de/pub/u-boot
U_BOOT_DIR:=$(PROJECT_BUILD_DIR)/u-boot-$(U_BOOT_VERSION)
U_BOOT_PATCH_DIR:=$(PROJECT_BUILD_DIR)/u-boot-patches
U_BOOT_CAT:=$(BZCAT)
U_BOOT_BIN:=u-boot.bin
U_BOOT_TARGET:=$(BOARD_NAME)-u-boot-$(U_BOOT_VERSION)-$(DATE).bin
U_BOOT_TOOLS_BIN:=mkimage
U_BOOT_TOOLS:=$(STAGING_DIR)/usr/bin/$(U_BOOT_TOOLS_BIN)
# u-boot still uses arch=ppc for powerpc
U_BOOT_ARCH=$(KERNEL_ARCH:powerpc=ppc)
ifeq ($(UBOOT_BOARD_NAME),"")
UBOOT_BOARD_NAME:=$(strip $(subst ",,$(BR2_TARGET_UBOOT_BOARDNAME)))
#"))
endif

ifneq ($(BR2_TARGET_U_BOOT_CONFIG_BOARD),)
U_BOOT_INC_CONF_FILE:=$(U_BOOT_DIR)/include/configs/$(subst _config,,$(BR2_TARGET_U_BOOT_CONFIG_BOARD)).h
else
U_BOOT_INC_CONF_FILE:=$(U_BOOT_DIR)/include/config.h
endif

U_BOOT_TARGET_TOOLS:=
ifeq ($(BR2_TARGET_UBOOT_TOOL_MKIMAGE),y)
U_BOOT_TARGET_TOOLS+=$(TARGET_DIR)/usr/bin/mkimage
endif
ifeq ($(BR2_TARGET_UBOOT_TOOL_ENV),y)
U_BOOT_TARGET_TOOLS+=$(TARGET_DIR)/usr/sbin/fw_printenv
endif


# Define a helper function
define insert_define
@echo "#ifdef $(strip $(1))" >> $(U_BOOT_INC_CONF_FILE)
@echo "#undef $(strip $(1))" >> $(U_BOOT_INC_CONF_FILE)
@echo "#endif" >> $(U_BOOT_INC_CONF_FILE)
@echo '#define $(strip $(1)) $(2)' >> $(U_BOOT_INC_CONF_FILE)
endef

$(DL_DIR)/$(U_BOOT_SOURCE):
	 $(WGET) -P $(DL_DIR) $(U_BOOT_SITE)/$(U_BOOT_SOURCE)

$(U_BOOT_DIR)/.unpacked: $(DL_DIR)/$(U_BOOT_SOURCE)
	$(U_BOOT_CAT) $(DL_DIR)/$(U_BOOT_SOURCE) \
		| tar -C $(PROJECT_BUILD_DIR) $(TAR_OPTIONS) -
	touch $@

$(U_BOOT_DIR)/.patched: $(U_BOOT_DIR)/.unpacked
	toolchain/patch-kernel.sh $(U_BOOT_DIR) target/u-boot/$(U_BOOT_VERSION) \
		u-boot-$(U_BOOT_VERSION)-\*.patch \
		u-boot-$(U_BOOT_VERSION)-\*.patch.$(ARCH)
ifneq ($(strip $(BR2_TARGET_UBOOT_CUSTOM_PATCH)),"")
	@mkdir -p $(U_BOOT_PATCH_DIR)
	cp -dpr $(BR2_TARGET_UBOOT_CUSTOM_PATCH) $(U_BOOT_PATCH_DIR)
	toolchain/patch-kernel.sh $(U_BOOT_DIR) $(U_BOOT_PATCH_DIR) \*.patch
endif
	touch $@

$(U_BOOT_DIR)/.header_copied: $(U_BOOT_DIR)/.patched
ifneq ($(strip $(BR2_TARGET_U_BOOT_CONFIG_HEADER_FILE)),)
	cp -dpf $(BR2_TARGET_U_BOOT_CONFIG_HEADER_FILE) $(U_BOOT_INC_CONF_FILE)
endif
	touch $@

$(U_BOOT_DIR)/.configured: $(U_BOOT_DIR)/.header_copied
	$(TARGET_CONFIGURE_OPTS)		\
		CFLAGS="$(TARGET_CFLAGS)"	\
		LDFLAGS="$(TARGET_LDFLAGS)"	\
		$(MAKE) -C $(U_BOOT_DIR)	\
		$(UBOOT_BOARD_NAME)_config
	touch $@

$(U_BOOT_DIR)/.header_modified: $(U_BOOT_DIR)/.configured
	# Modify configuration header in $(U_BOOT_INC_CONF_FILE)
	
	@echo >> $(U_BOOT_INC_CONF_FILE)
	@echo "/* Add a wrapper around the values Buildroot sets. */" >> $(U_BOOT_INC_CONF_FILE)
	@echo "#ifndef __BR2_ADDED_CONFIG_H" >> $(U_BOOT_INC_CONF_FILE)
	@echo "#define __BR2_ADDED_CONFIG_H" >> $(U_BOOT_INC_CONF_FILE)
ifneq ($(strip $(BR2_PROJECT)),"")
	$(call insert_define, CONFIG_HOSTNAME, $(BR2_PROJECT))
endif
ifneq ($(strip $(BR2_TARGET_UBOOT_SERVERIP)),"")
	$(call insert_define, CONFIG_SERVERIP, $(BR2_TARGET_UBOOT_SERVERIP))
endif

ifneq ($(strip $(BR2_TARGET_UBOOT_IPADDR)),"")
	$(call insert_define, CONFIG_IPADDR, $(BR2_TARGET_UBOOT_IPADDR))
ifneq ($(strip $(BR2_TARGET_UBOOT_GATEWAY)),"")
	$(call insert_define, CONFIG_GATEWAYIP, $(BR2_TARGET_UBOOT_GATEWAY))
endif
ifneq ($(strip $(BR2_TARGET_UBOOT_NETMASK)),"")
	$(call insert_define, CONFIG_NETMASK, $(BR2_TARGET_UBOOT_NETMASK))
endif
endif # end BR2_TARGET_U_BOOT_IPADDR

ifneq ($(strip $(BR2_TARGET_UBOOT_ETHADDR)),"")
	$(call insert_define, CONFIG_ETHADDR, $(BR2_TARGET_UBOOT_ETHADDR))
endif
ifneq ($(strip $(BR2_TARGET_UBOOT_ETH1ADDR)),"")
	$(call insert_define, CONFIG_ETH2ADDR, $(BR2_TARGET_UBOOT_ETH1ADDR))
endif
ifneq ($(strip $(BR2_TARGET_UBOOT_BOOTARGS)),"")
	$(call insert_define, CONFIG_BOOTARGS, $(BR2_TARGET_UBOOT_BOOTARGS))
endif
ifneq ($(strip $(BR2_TARGET_UBOOT_BOOTCMD)),"")
	$(call insert_define, CONFIG_BOOTCOMMAND, $(BR2_TARGET_UBOOT_BOOTCMD))
endif
ifeq ($(BR2_TARGET_UBOOT_SILENT),y)
	$(call insert_define, CONFIG_SILENT_CONSOLE,)
endif
	@echo "#endif /* __BR2_ADDED_CONFIG_H */" >> $(U_BOOT_INC_CONF_FILE)
	touch $@

$(U_BOOT_DIR)/$(U_BOOT_BIN): $(U_BOOT_DIR)/.header_modified
	$(TARGET_CONFIGURE_OPTS) \
		CFLAGS="$(TARGET_CFLAGS)" \
		LDFLAGS="$(TARGET_LDFLAGS)" \
		$(MAKE) CROSS_COMPILE="$(TARGET_CROSS)" ARCH=$(U_BOOT_ARCH) \
		 -C $(U_BOOT_DIR)

$(BINARIES_DIR)/$(U_BOOT_BIN): $(U_BOOT_DIR)/$(U_BOOT_BIN)
	rm -f $(BINARIES_DIR)/$(U_BOOT_TARGET)
	rm -f $(BINARIES_DIR)/$(U_BOOT_BIN)
	cp -dpf $(U_BOOT_DIR)/$(U_BOOT_BIN) $(BINARIES_DIR)/$(U_BOOT_TARGET)
	(cd $(BINARIES_DIR); ln -s $(U_BOOT_TARGET) $(U_BOOT_BIN)) 

$(U_BOOT_TOOLS):	$(U_BOOT_DIR)/tools/$(U_BOOT_TOOLS_BIN)
	cp -dpf $(U_BOOT_DIR)/tools/$(U_BOOT_TOOLS_BIN) $(STAGING_DIR)/usr/bin/

$(TARGET_DIR)/usr/bin/mkimage: $(U_BOOT_DIR)/$(U_BOOT_BIN)
	mkdir -p $(@D)
	$(TARGET_CC) -I$(U_BOOT_DIR)/include -DUSE_HOSTCC -o $@ \
		$(U_BOOT_DIR)/tools/mkimage.c \
		$(addprefix $(U_BOOT_DIR)/tools/,crc32.c image.c md5.c sha1.c fdt*.c)
	$(STRIPCMD) $(STRIP_STRIP_UNNEEDED) $@

$(TARGET_DIR)/usr/sbin/fw_printenv: $(U_BOOT_DIR)/$(U_BOOT_BIN)
	mkdir -p $(@D)
	$(TARGET_CC) -I$(U_BOOT_DIR)/include -I$(LINUX_HEADERS_DIR)/include \
		-DUSE_HOSTCC -o $@ \
		$(U_BOOT_DIR)/tools/env/*.c $(U_BOOT_DIR)/tools/crc32.c
	$(STRIPCMD) $(STRIP_STRIP_UNNEEDED) $@
	ln -sf fw_printenv $(TARGET_DIR)/usr/sbin/fw_setenv

u-boot: $(BINARIES_DIR)/$(U_BOOT_BIN) $(U_BOOT_TOOLS) $(U_BOOT_TARGET_TOOLS)

u-boot-clean:
	-$(MAKE) -C $(U_BOOT_DIR) clean
	rm -f $(U_BOOT_TOOLS) $(U_BOOT_TARGET_TOOLS)

u-boot-dirclean:
	rm -rf $(U_BOOT_DIR)

u-boot-source: $(DL_DIR)/$(U_BOOT_SOURCE)

#############################################################
#
# Toplevel Makefile options
#
#############################################################
ifeq ($(BR2_TARGET_UBOOT),y)
TARGETS+=u-boot
endif

u-boot-status:
	@echo
	@echo U_BOOT_INC_CONF_FILE = $(U_BOOT_INC_CONF_FILE)
	@echo BR2_UBOOT_VERSION = $(BR2_UBOOT_VERSION)
	@echo BR2_TARGET_U_BOOT_CONFIG_HEADER_FILE = $(BR2_TARGET_U_BOOT_CONFIG_HEADER_FILE)
	@echo BR2_TARGET_U_BOOT_CONFIG_BOARD = $(BR2_TARGET_U_BOOT_CONFIG_BOARD)
	@echo BR2_TARGET_UBOOT_SERVERIP = $(BR2_TARGET_UBOOT_SERVERIP)
	@echo BR2_TARGET_UBOOT_IPADDR = $(BR2_TARGET_UBOOT_IPADDR)
	@echo BR2_TARGET_UBOOT_GATEWAY = $(BR2_TARGET_UBOOT_GATEWAY)
	@echo BR2_TARGET_UBOOT_NETMASK = $(BR2_TARGET_UBOOT_NETMASK)
	@echo BR2_TARGET_UBOOT_ETH0ADDR = $(BR2_TARGET_UBOOT_ETHADDR)
	@echo BR2_TARGET_UBOOT_ETH1ADDR = $(BR2_TARGET_UBOOT_ETH1ADDR)
	@echo BR2_TARGET_UBOOT_BOOTARGS = $(BR2_TARGET_UBOOT_BOOTARGS)
	@echo BR2_TARGET_UBOOT_BOOTCMD = $(BR2_TARGET_UBOOT_BOOTCMD)
	@echo BR2_TARGET_UBOOT_SILENT = $(BR2_TARGET_UBOOT_SILENT)
	@echo BR2_BOOTSOURCE=$(BR2_BOOTSOURCE)
	@echo BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD=$(BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD)
	@echo BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH=$(BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH)
	@echo BR2_TARGET_UBOOT_BOOTSOURCE_NANDFLASH=$(BR2_TARGET_UBOOT_BOOTSOURCE_NANDFLASH)
	@echo BR2_TARGET_UBOOT_BOOTSOURCE_FLASH=$(BR2_TARGET_UBOOT_BOOTSOURCE_FLASH)
	@echo BR2_TARGET_UBOOT_BOOTSOURCE_SDCARD=$(BR2_TARGET_UBOOT_BOOTSOURCE_SDCARD)
	@echo BR2_TARGET_UBOOT_BOOTSOURCE_EEPROM=$(BR2_TARGET_UBOOT_BOOTSOURCE_EEPROM)
	@echo UBOOT_BOARD_NAME=$(UBOOT_BOARD_NAME)
	@echo TEST=$(TEST)
	@exit 0