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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2010-03-17 08:40:35 +0100
committerThomas Petazzoni <thomas.petazzoni@free-electrons.com>2010-06-12 13:23:47 +0200
commitafd3bd2b03a36a42aa19124a5a8f70c7edfebfd5 (patch)
tree0186ad42c8a1536e5a50a8663dce05e4eec9406b /boot/u-boot
parentf2d16ae0e17370131e64438cd50d5a6c7ab0ea8d (diff)
u-boot: further simplify the configuration
Remove all the bootsource selection mechanism and the horribly complicated BR2_TARGET_UBOOT_DEFAULT_ENV thing, which wanted to be generic, but was in fact very AT91-specific. Just keep things simple: we build U-Boot with the board configuration file specified in BR2_TARGET_UBOOT_BOARDNAME. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'boot/u-boot')
-rw-r--r--boot/u-boot/Config.in247
-rw-r--r--boot/u-boot/u-boot.mk113
2 files changed, 8 insertions, 352 deletions
diff --git a/boot/u-boot/Config.in b/boot/u-boot/Config.in
index 78a195d25..a4f5fd954 100644
--- a/boot/u-boot/Config.in
+++ b/boot/u-boot/Config.in
@@ -42,53 +42,6 @@ config BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR
Most users may leave this empty
-choice
- prompt "Bootsource"
- depends on BR2_BOOTSOURCE
- default BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD
-
- config BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD
- bool "Boot from dataflashcard"
- depends on BR2_BOOTSOURCE_DATAFLASHCARD
-
- config BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- bool "Boot from dataflash"
- depends on BR2_BOOTSOURCE_DATAFLASH
-
- config BR2_TARGET_UBOOT_BOOTSOURCE_NANDFLASH
- bool "Boot from a NAND flash"
- depends on BR2_BOOTSOURCE_NANDFLASH
-
- config BR2_TARGET_UBOOT_BOOTSOURCE_FLASH
- bool "Boot from a parallell flash"
- depends on BR2_BOOTSOURCE_FLASH
-
- config BR2_TARGET_UBOOT_BOOTSOURCE_SDCARD
- bool "Boot from an SD-Card"
- depends on BR2_BOOTSOURCE_SDCARD
-
- config BR2_TARGET_UBOOT_BOOTSOURCE_EEPROM
- bool "Boot from a serial EEPROM (Not yet supported)"
- depends on BR2_BOOTSOURCE_EEPROM
-
-endchoice
-
-config BR2_TARGET_UBOOT_BOOTSOURCE
- string
- depends on BR2_BOOTSOURCE
- default "dataflash" if BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD
- default "dataflash" if BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default "nandflash" if BR2_TARGET_UBOOT_BOOTSOURCE_NANDFLASH
- default "flash" if BR2_TARGET_UBOOT_BOOTSOURCE_FLASH
- default "sdcard" if BR2_TARGET_UBOOT_BOOTSOURCE_SDCARD
- default "eeprom" if BR2_TARGET_UBOOT_BOOTSOURCE_EEPROM
-
-config BR2_TARGET_UBOOT_SILENT
- bool "silent console"
- help
- If the option has been enabled, the output can be
- silenced by setting the environment variable "silent".
-
config BR2_TARGET_UBOOT_TOOL_MKIMAGE
bool "mkimage tool in target"
help
@@ -99,165 +52,6 @@ config BR2_TARGET_UBOOT_TOOL_ENV
help
Install fw_printenv / fw_setenv tools in target.
-menuconfig BR2_TARGET_UBOOT_DEFAULT_ENV
- bool "Generate a default environment"
- help
- Will generate variables for factory default command
- and autoscript.
-
-if BR2_TARGET_UBOOT_DEFAULT_ENV
-choice
- prompt "SDRAM Memory size"
- default BR2_TARGET_UBOOT_SDRAM_SIZE_64M
- help
- Size of the onboard SDRAM
-
-config BR2_TARGET_UBOOT_SDRAM_SIZE_256MB
- bool "256 MB"
-
-config BR2_TARGET_UBOOT_SDRAM_SIZE_128MB
- bool "128 MB"
-
-config BR2_TARGET_UBOOT_SDRAM_SIZE_64MB
- bool "64 MB"
-
-config BR2_TARGET_UBOOT_SDRAM_SIZE_32MB
- bool "32 MB"
-
-config BR2_TARGET_UBOOT_SDRAM_SIZE_16MB
- bool "16 MB"
-
-config BR2_TARGET_UBOOT_SDRAM_SIZE_8MB
- bool "8 MB"
-
-endchoice
-
-config BR2_TARGET_UBOOT_MEMORY_SIZE
- string
- default "256M" if BR2_TARGET_UBOOT_SDRAM_SIZE_256MB
- default "128M" if BR2_TARGET_UBOOT_SDRAM_SIZE_128MB
- default "64M" if BR2_TARGET_UBOOT_SDRAM_SIZE_64MB
- default "32M" if BR2_TARGET_UBOOT_SDRAM_SIZE_32MB
- default "16M" if BR2_TARGET_UBOOT_SDRAM_SIZE_16MB
- default "8M" if BR2_TARGET_UBOOT_SDRAM_SIZE_8MB
-
-choice
- prompt "Kernel Size"
- default BR2_TARGET_UBOOT_KERNEL_SIZE_2_00MB
-
-config BR2_TARGET_UBOOT_KERNEL_SIZE_1_25MB
- bool "Kernel size is less than 1.25 MB"
-
-config BR2_TARGET_UBOOT_KERNEL_SIZE_1_50MB
- bool "Kernel size is less than 1.50 MB"
-
-config BR2_TARGET_UBOOT_KERNEL_SIZE_1_75MB
- bool "Kernel size is less than 1.75 MB"
-
-config BR2_TARGET_UBOOT_KERNEL_SIZE_2_00MB
- bool "Kernel size is less than 2.00 MB"
-
-config BR2_TARGET_UBOOT_KERNEL_SIZE_2_25MB
- bool "Kernel size is less than 2.25 MB"
-
-config BR2_TARGET_UBOOT_KERNEL_SIZE_2_50MB
- bool "Kernel size is less than 2.50 MB"
-
-endchoice
-
-choice
- prompt "Dataflash Size"
- depends on BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD || BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default BR2_TARGET_UBOOT_DATAFLASH_SIZE_2_00MB
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE_8MB
- bool "Dataflash size is 8 MB"
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE_4MB
- bool "Dataflash size is 4 MB"
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE_2MB
- bool "Dataflash size is 2 MB"
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE_1MB
- bool "Dataflash size is 1 MB"
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE_0_50MB
- bool "Dataflash size is 0.5 MB"
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE_0_25MB
- bool "Dataflash size is 0.25 MB"
-
-endchoice
-
-config BR2_TARGET_UBOOT_DATAFLASH_SIZE
- string
- depends on BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD || BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default "8M" if BR2_TARGET_DATAFLASH_SIZE_8MB
- default "4M" if BR2_TARGET_DATAFLASH_SIZE_4MB
- default "2M" if BR2_TARGET_DATAFLASH_SIZE_2MB
- default "1M" if BR2_TARGET_DATAFLASH_SIZE_1MB
- default "0.5M" if BR2_TARGET_DATAFLASH_SIZE_0_50MB
- default "0.25M" if BR2_TARGET_DATAFLASH_SIZE_0_25MB
-
-config BR2_TARGET_UBOOT_END_OF_FLASH
- string
- depends on BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD || BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default "C083FFFF" if BR2_TARGET_UBOOT_DATAFLASH_SIZE_8MB
- default "C041FFFF" if BR2_TARGET_UBOOT_DATAFLASH_SIZE_4MB
- default "C020FFFF" if BR2_TARGET_UBOOT_DATAFLASH_SIZE_2MB
- default "C0107FFF" if BR2_TARGET_UBOOT_DATAFLASH_SIZE_1MB
- default "C0083FFF" if BR2_TARGET_UBOOT_DATAFLASH_SIZE_0_50MB
- default "C0041FFF" if BR2_TARGET_UBOOT_DATAFLASH_SIZE_0_25MB
- help
-
-config BR2_TARGET_UBOOT_KERNEL_START
- string "Kernel SDRAM address"
- default "21000000"
- help
- Kernel is loaded to this address in SDRAM
-
-config BR2_TARGET_UBOOT_KERNEL_LOCATION
- string "Kernel flash address"
- depends on BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD || \
- BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default "C0042000" if BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD || BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default ""
- help
- Kernel location in dataflash
-
-config BR2_TARGET_UBOOT_FILESYSTEM_START
- string
- default "2114A000" if BR2_TARGET_UBOOT_KERNEL_SIZE_1_25MB
- default "2118C000" if BR2_TARGET_UBOOT_KERNEL_SIZE_1_50MB
- default "211CE000" if BR2_TARGET_UBOOT_KERNEL_SIZE_1_75MB
- default "21210000" if BR2_TARGET_UBOOT_KERNEL_SIZE_2_00MB
- default "21252000" if BR2_TARGET_UBOOT_KERNEL_SIZE_2_25MB
- default "21294000" if BR2_TARGET_UBOOT_KERNEL_SIZE_2_50MB
- help
- Kernel is loaded to this SDRAM address
- Assumes SDRAM starts at 20000000
- Will need to be updated if the SDRAM is located elsewhere
-
-config BR2_TARGET_UBOOT_FILESYSTEM_LOCATION
- string
- depends on BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASHCARD || \
- BR2_TARGET_UBOOT_BOOTSOURCE_DATAFLASH
- default "C018C000" if BR2_TARGET_UBOOT_KERNEL_SIZE_1_25MB
- default "C01CE000" if BR2_TARGET_UBOOT_KERNEL_SIZE_1_50MB
- default "C0210000" if BR2_TARGET_UBOOT_KERNEL_SIZE_1_75MB
- default "C0252000" if BR2_TARGET_UBOOT_KERNEL_SIZE_2_00MB
- default "C0294000" if BR2_TARGET_UBOOT_KERNEL_SIZE_2_25MB
- default "C02D6000" if BR2_TARGET_UBOOT_KERNEL_SIZE_2_50MB
- help
- Determine location for File System in Dataflash
- This needs to be updated for other memory technologies
-
-config BR2_TARGET_UBOOT_FILESYSTEM_SIZE
- string "File System Size"
- default "6000000"
- help
-
menuconfig BR2_TARGET_UBOOT_NETWORK
bool "Network Settings"
default y
@@ -304,45 +98,4 @@ config BR2_TARGET_UBOOT_ETH1ADDR
endif # BR2_TARGET_UBOOT_NETWORK
-endif # BR2_TARGET_UBOOT_DEFAULT_ENV
-
endif # BR2_TARGET_UBOOT
-
-config BR2_BOOTSOURCE_DATAFLASHCARD
- bool
- help
- Allow use of a dataflashcard as a boot source
-
-config BR2_BOOTSOURCE_DATAFLASH
- bool
- help
- Allow use of a dataflash as a boot source
-
-config BR2_BOOTSOURCE_NANDFLASH
- bool
- help
- Allow use of a NAND flash as a boot source
-
-config BR2_BOOTSOURCE_FLASH
- bool
- help
- Allow use of a flash RAM as a boot source
-
-config BR2_BOOTSOURCE_SDCARD
- bool
- help
- Allow use of an SD-card as a boot source
-
-config BR2_BOOTSOURCE_EEPROM
- bool
- help
- Allow use of a serial eeprom as a boot source
-
-config BR2_BOOTSOURCE
- bool
- default y if BR2_BOOTSOURCE_DATAFLASHCARD
- default y if BR2_BOOTSOURCE_DATAFLASH
- default y if BR2_BOOTSOURCE_NANDFLASH
- default y if BR2_BOOTSOURCE_FLASH
- default y if BR2_BOOTSOURCE_SDCARD
- default y if BR2_BOOTSOURCE_EEPROM
diff --git a/boot/u-boot/u-boot.mk b/boot/u-boot/u-boot.mk
index 00724bae6..a562da25d 100644
--- a/boot/u-boot/u-boot.mk
+++ b/boot/u-boot/u-boot.mk
@@ -21,21 +21,9 @@ U_BOOT_DIR:=$(BUILD_DIR)/u-boot-$(U_BOOT_VERSION)
U_BOOT_CAT:=$(BZCAT)
U_BOOT_BIN:=u-boot.bin
-U_BOOT_TOOLS:=$(HOST_DIR)/usr/bin/mkimage
-MKIMAGE:=$(U_BOOT_TOOLS)
-U_BOOT_AUTOSCRIPT=$(BINARIES_DIR)/autoscript
+MKIMAGE:=$(HOST_DIR)/usr/bin/mkimage
-U_BOOT_TARGETS:=$(BINARIES_DIR)/$(U_BOOT_BIN) $(U_BOOT_TOOLS)
-
-ifeq ($(call qstrip,$(BR2_TARGET_UBOOT_DEFAULT_ENV)),y)
-U_BOOT_TARGETS += u-boot-autoscript
-endif
-
-TARGET_UBOOT_IPADDR:=$(call qstrip,$(BR2_TARGET_UBOOT_IPADDR))
-TARGET_UBOOT_SERVERIP:=$(call qstrip,$(BR2_TARGET_UBOOT_SERVERIP))
-TARGET_UBOOT_GATEWAY:=$(call qstrip,$(BR2_TARGET_UBOOT_GATEWAY))
-TARGET_UBOOT_NETMASK:=$(call qstrip,$(BR2_TARGET_UBOOT_NETMASK))
-TARGET_UBOOT_ETHADDR:=$(call qstrip,$(BR2_TARGET_UBOOT_ETHADDR))
+U_BOOT_TARGETS:=$(BINARIES_DIR)/$(U_BOOT_BIN) $(MKIMAGE)
# u-boot still uses arch=ppc for powerpc
U_BOOT_ARCH=$(KERNEL_ARCH:powerpc=ppc)
@@ -87,68 +75,38 @@ endif
LDFLAGS="$(TARGET_LDFLAGS)" \
$(U_BOOT_CONFIGURE_OPTS) \
$(MAKE) -C $(U_BOOT_DIR) \
- $(UBOOT_BOARD_NAME)_config
+ $(U_BOOT_BOARD_NAME)_config
touch $@
$(U_BOOT_DIR)/.header_modified: $(U_BOOT_DIR)/.configured
# Modify configuration header in $(U_BOOT_INC_CONF_FILE)
-ifdef BR2_TARGET_UBOOT_DEFAULT_ENV
+ifdef BR2_TARGET_UBOOT_NETWORK
@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)
$(call insert_define, DATE, $(DATE))
$(call insert_define, CONFIG_LOAD_SCRIPTS, 1)
-endif # BR2_TARGET_UBOOT_DEFAULT_ENV
-ifdef BR2_TARGET_UBOOT_NETWORK
ifneq ($(strip $(BR2_TARGET_UBOOT_IPADDR)),"")
$(call insert_define, CONFIG_IPADDR, $(BR2_TARGET_UBOOT_IPADDR))
+endif
ifneq ($(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_SERVERIP)),"")
$(call insert_define, CONFIG_SERVERIP, $(BR2_TARGET_UBOOT_SERVERIP))
endif
ifneq ($(strip $(BR2_TARGET_UBOOT_ETHADDR)),"")
$(call insert_define, CONFIG_ETHADDR, $(BR2_TARGET_UBOOT_ETHADDR))
endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_ETH1ADDR)),)
ifneq ($(strip $(BR2_TARGET_UBOOT_ETH1ADDR)),"")
$(call insert_define, CONFIG_ETH1ADDR, $(BR2_TARGET_UBOOT_ETH1ADDR))
endif
-endif
-endif # BR2_TARGET_UBOOT_NETWORK
-ifeq ($(BR2_TARGET_UBOOT_SILENT),y)
- $(call insert_define, CONFIG_SILENT_CONSOLE,)
-endif
-ifdef BR2_TARGET_UBOOT_DEFAULT_ENV
-ifneq ($(strip $(BR2_TARGET_UBOOT_KERNEL_START)),"")
- $(call insert_define, KERNEL_START, $(BR2_TARGET_UBOOT_KERNEL_START))
-endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_KERNEL_LOCATION)),"")
- $(call insert_define, KERNEL_LOCATION, $(BR2_TARGET_UBOOT_KERNEL_LOCATION))
-endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_FILESYSTEM_START)),"")
- $(call insert_define, FILESYSTEM_START, $(BR2_TARGET_UBOOT_FILESYSTEM_START))
-endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_FILESYSTEM_LOCATION)),"")
- $(call insert_define, FILESYSTEM_LOCATION, $(BR2_TARGET_UBOOT_FILESYSTEM_LOCATION))
-endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_FILESYSTEM_SIZE)),"")
- $(call insert_define, FILESYSTEM_SIZE, $(BR2_TARGET_UBOOT_FILESYSTEM_SIZE))
-endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_END_OF_FLASH)),"")
- $(call insert_define, END_OF_FLASH, $(BR2_TARGET_UBOOT_END_OF_FLASH))
-endif
-ifneq ($(strip $(BR2_TARGET_UBOOT_MEMORY_SIZE)),"")
- $(call insert_define, MEMORY_SIZE, $(BR2_TARGET_UBOOT_MEMORY_SIZE))
-endif
@echo "#endif /* __BR2_ADDED_CONFIG_H */" >> $(U_BOOT_INC_CONF_FILE)
-endif # BR2_TARGET_UBOOT_DEFAULT_ENV
+endif # BR2_TARGET_UBOOT_NETWORK
touch $@
$(U_BOOT_DIR)/$(U_BOOT_BIN): $(U_BOOT_DIR)/.header_modified
@@ -195,11 +153,9 @@ $(TARGET_DIR)/usr/sbin/fw_printenv: $(U_BOOT_DIR)/.configured
u-boot: $(U_BOOT_TARGETS)
-u-boot-autoscript: $(U_BOOT_AUTOSCRIPT).img
-
u-boot-clean:
-$(MAKE) -C $(U_BOOT_DIR) clean
- rm -f $(U_BOOT_TOOLS) $(U_BOOT_TARGET_TOOLS)
+ rm -f $(MKIMAGE) $(U_BOOT_TARGET_TOOLS)
u-boot-dirclean:
rm -rf $(U_BOOT_DIR)
@@ -212,59 +168,6 @@ u-boot-configured: $(U_BOOT_DIR)/.header_modified
#############################################################
#
-# Generate an autoscript with the configration items
-#
-#############################################################
-
-$(U_BOOT_AUTOSCRIPT): .config
- rm -f $(U_BOOT_AUTOSCRIPT)
-ifneq ($(TARGET_UBOOT_IPADDR),)
- echo setenv ipaddr $(TARGET_UBOOT_IPADDR) > $(U_BOOT_AUTOSCRIPT)
-else
- echo TARGET_UBOOT_IPADDR="$(TARGET_UBOOT_IPADDR)"
-endif
-ifneq ($(TARGET_UBOOT_SERVERIP),)
- echo setenv serverip $(TARGET_UBOOT_SERVERIP) >> $(U_BOOT_AUTOSCRIPT)
-endif
-ifneq ($(TARGET_UBOOT_GATEWAY),)
- echo setenv gatewayip $(TARGET_UBOOT_GATEWAY) >> $(U_BOOT_AUTOSCRIPT)
-endif
-ifneq ($(TARGET_UBOOT_NETMASK),)
- echo setenv netmask $(TARGET_UBOOT_NETMASK) >> $(U_BOOT_AUTOSCRIPT)
-endif
- echo setenv linux $(LINUX26_KERNEL_NAME) >> $(U_BOOT_AUTOSCRIPT)
- echo setenv kernel-version $(LINUX26_VERSION) >> $(U_BOOT_AUTOSCRIPT)
- echo setenv kernel-date $(DATE) >> $(U_BOOT_AUTOSCRIPT)
- echo setenv hostname $(TARGET_HOSTNAME) >> $(U_BOOT_AUTOSCRIPT)
- echo setenv fs-date $(DATE) >> $(U_BOOT_AUTOSCRIPT)
- echo setenv rd-1 rootfs.$(ARCH)-$(DATE).ext2 >> $(U_BOOT_AUTOSCRIPT)
- echo setenv rd-2 rootfs.$(ARCH)-$(DATE).jffs2 >> $(U_BOOT_AUTOSCRIPT)
- echo setenv rd rootfs.$(BR2_ARCH)-$(DATE).ext2 >> $(U_BOOT_AUTOSCRIPT)
- echo setenv ver 1 >> $(U_BOOT_AUTOSCRIPT)
-ifneq ($(TARGET_UBOOT_ETHADDR),)
- echo setenv ethaddr $(TARGET_UBOOT_ETHADDR) >> $(U_BOOT_AUTOSCRIPT)
-endif
- echo setenv fstype ram >> $(U_BOOT_AUTOSCRIPT)
- echo fs >> $(U_BOOT_AUTOSCRIPT)
- echo os >> $(U_BOOT_AUTOSCRIPT)
- echo setargs >> $(U_BOOT_AUTOSCRIPT)
- echo saveenv >> $(U_BOOT_AUTOSCRIPT)
-
-$(U_BOOT_AUTOSCRIPT).img: $(U_BOOT_AUTOSCRIPT) $(MKIMAGE)
- $(MKIMAGE) -A $(ARCH) \
- -O linux \
- -T script \
- -C none \
- -a 0 \
- -e 0 \
- -n "autoscr config" \
- -d $(U_BOOT_AUTOSCRIPT) \
- $(U_BOOT_AUTOSCRIPT).img
-
-
-
-#############################################################
-#
# Toplevel Makefile options
#
#############################################################
@@ -272,7 +175,7 @@ ifeq ($(BR2_TARGET_UBOOT),y)
TARGETS+=u-boot
# we NEED a board name
-ifeq ($(UBOOT_BOARD_NAME),)
+ifeq ($(U_BOOT_BOARD_NAME),)
$(error NO U-Boot board name set. Check your BR2_TARGET_UBOOT_BOARDNAME setting)
endif