#

  # (C) Copyright 2000-2013

  # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  #

  # SPDX-License-Identifier:	GPL-2.0+

  #

  VERSION = 2014
  PATCHLEVEL = 01

  SUBLEVEL =

  EXTRAVERSION = -rc1

  ifneq "$(SUBLEVEL)" ""

  U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)

  else
  U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL)$(EXTRAVERSION)
  endif

  TIMESTAMP_FILE = $(obj)include/generated/timestamp_autogenerated.h
  VERSION_FILE = $(obj)include/generated/version_autogenerated.h

  HOSTARCH := $(shell uname -m | \

  	sed -e s/i.86/x86/ \

  	    -e s/sun4u/sparc64/ \
  	    -e s/arm.*/arm/ \
  	    -e s/sa110/arm/ \

  	    -e s/ppc64/powerpc/ \
  	    -e s/ppc/powerpc/ \

  	    -e s/macppc/powerpc/\
  	    -e s/sh.*/sh/)

  HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \

  	    sed -e 's/\(cygwin\).*/cygwin/')

  export	HOSTARCH HOSTOS

  
  # Deal with colliding definitions from tcsh etc.
  VENDOR=
  
  #########################################################################

  # Allow for silent builds
  ifeq (,$(findstring s,$(MAKEFLAGS)))
  XECHO = echo
  else
  XECHO = :
  endif
  
  #########################################################################

  #

  # U-boot build supports generating object files in a separate external

  # directory. Two use cases are supported:

  #

  # 1) Add O= to the make command line
  # 'make O=/tmp/build all'
  #

  # 2) Set environment variable BUILD_DIR to point to the desired location

  # 'export BUILD_DIR=/tmp/build'
  # 'make'
  #
  # The second approach can also be used with a MAKEALL script
  # 'export BUILD_DIR=/tmp/build'
  # './MAKEALL'

  #

  # Command line 'O=' setting overrides BUILD_DIR environment variable.

  #

  # When none of the above methods is used the local build is performed and
  # the object files are placed in the source directory.

  #

  ifeq ("$(origin O)", "command line")
  BUILD_DIR := $(O)
  endif

  # Call a source code checker (by default, "sparse") as part of the
  # C compilation.
  #
  # Use 'make C=1' to enable checking of re-compiled files.
  #
  # See the linux kernel file "Documentation/sparse.txt" for more details,
  # including where to get the "sparse" utility.
  
  ifdef C
  ifeq ("$(origin C)", "command line")
  CHECKSRC := $(C)
  endif
  endif
  ifndef CHECKSRC
    CHECKSRC = 0
  endif
  export CHECKSRC

  ifneq ($(BUILD_DIR),)
  saved-output := $(BUILD_DIR)

  
  # Attempt to create a output directory.
  $(shell [ -d ${BUILD_DIR} ] || mkdir -p ${BUILD_DIR})

  # Verify if it was successful.

  BUILD_DIR := $(shell cd $(BUILD_DIR) && /bin/pwd)
  $(if $(BUILD_DIR),,$(error output directory "$(saved-output)" does not exist))
  endif # ifneq ($(BUILD_DIR),)
  
  OBJTREE		:= $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR))

  SPLTREE		:= $(OBJTREE)/spl

  TPLTREE		:= $(OBJTREE)/tpl

  SRCTREE		:= $(CURDIR)
  TOPDIR		:= $(SRCTREE)
  LNDIR		:= $(OBJTREE)

  export	TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE

  
  MKCONFIG	:= $(SRCTREE)/mkconfig
  export MKCONFIG

  ifneq ($(OBJTREE),$(SRCTREE))

  REMOTE_BUILD	:= 1

  export REMOTE_BUILD
  endif
  
  # $(obj) and (src) are defined in config.mk but here in main Makefile
  # we also need them before config.mk is included which is the case for
  # some targets like unconfig, clean, clobber, distclean, etc.
  ifneq ($(OBJTREE),$(SRCTREE))
  obj := $(OBJTREE)/
  src := $(SRCTREE)/
  else
  obj :=
  src :=

  endif

  export obj src

  # Make sure CDPATH settings don't interfere
  unexport CDPATH

  #########################################################################

  # The "tools" are needed early, so put this first
  # Don't include stuff already done in $(LIBS)

  # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
  # is "yes"), so compile examples after U-Boot is compiled.
  SUBDIR_TOOLS = tools

  SUBDIRS = $(SUBDIR_TOOLS)

  .PHONY : $(SUBDIRS) $(VERSION_FILE) $(TIMESTAMP_FILE)

  ifeq ($(obj)include/config.mk,$(wildcard $(obj)include/config.mk))

  # Include autoconf.mk before config.mk so that the config options are available
  # to all top level build files.  We need the dummy all: target to prevent the
  # dependency target in autoconf.mk.dep from being the default.
  all:
  sinclude $(obj)include/autoconf.mk.dep
  sinclude $(obj)include/autoconf.mk

  SUBDIR_EXAMPLES-y := examples/standalone
  SUBDIR_EXAMPLES-$(CONFIG_API) += examples/api

  ifndef CONFIG_SANDBOX

  SUBDIRS += $(SUBDIR_EXAMPLES-y)

  endif

  # load ARCH, BOARD, and CPU configuration

  include $(obj)include/config.mk

  export	ARCH CPU BOARD VENDOR SOC

  # set default to nothing for native builds

  ifeq ($(HOSTARCH),$(ARCH))

  CROSS_COMPILE ?=

  endif

  # load other configuration
  include $(TOPDIR)/config.mk

  # Targets which don't build the source code
  NON_BUILD_TARGETS = backup clean clobber distclean mkproper tidy unconfig
  
  # Only do the generic board check when actually building, not configuring
  ifeq ($(filter $(NON_BUILD_TARGETS),$(MAKECMDGOALS)),)
  ifeq ($(findstring _config,$(MAKECMDGOALS)),)
  $(CHECK_GENERIC_BOARD)
  endif
  endif

  # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
  # that (or fail if absent).  Otherwise, search for a linker script in a
  # standard location.

  LDSCRIPT_MAKEFILE_DIR = $(dir $(LDSCRIPT))

  ifndef LDSCRIPT
  	#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
  	ifdef CONFIG_SYS_LDSCRIPT
  		# need to strip off double quotes
  		LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
  	endif
  endif

  # If there is no specified link script, we look in a number of places for it

  ifndef LDSCRIPT
  	ifeq ($(CONFIG_NAND_U_BOOT),y)
  		LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
  		ifeq ($(wildcard $(LDSCRIPT)),)
  			LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
  		endif
  	endif
  	ifeq ($(wildcard $(LDSCRIPT)),)
  		LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
  	endif
  	ifeq ($(wildcard $(LDSCRIPT)),)
  		LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
  	endif
  	ifeq ($(wildcard $(LDSCRIPT)),)

  		LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
  		# We don't expect a Makefile here
  		LDSCRIPT_MAKEFILE_DIR =
  	endif
  	ifeq ($(wildcard $(LDSCRIPT)),)

  $(error could not find linker script)
  	endif
  endif

  #########################################################################
  # U-Boot objects....order is important (i.e. start must be first)

  OBJS  = $(CPUDIR)/start.o

  ifeq ($(CPU),ppc4xx)

  OBJS += $(CPUDIR)/resetvec.o

  endif

  ifeq ($(CPU),mpc85xx)

  OBJS += $(CPUDIR)/resetvec.o

  endif

  OBJS := $(addprefix $(obj),$(OBJS))

  HAVE_VENDOR_COMMON_LIB = $(if $(wildcard board/$(VENDOR)/common/Makefile),y,n)

  LIBS-y += lib/

  LIBS-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
  LIBS-y += $(CPUDIR)/

  ifdef SOC

  LIBS-y += $(CPUDIR)/$(SOC)/

  endif

  LIBS-$(CONFIG_IXP4XX_NPE) += drivers/net/npe/
  LIBS-$(CONFIG_OF_EMBED) += dts/
  LIBS-y += arch/$(ARCH)/lib/

  LIBS-y += fs/

  LIBS-y += net/
  LIBS-y += disk/
  LIBS-y += drivers/
  LIBS-y += drivers/dma/
  LIBS-y += drivers/gpio/
  LIBS-y += drivers/i2c/
  LIBS-y += drivers/input/
  LIBS-y += drivers/mmc/
  LIBS-y += drivers/mtd/
  LIBS-y += drivers/mtd/nand/
  LIBS-y += drivers/mtd/onenand/
  LIBS-y += drivers/mtd/ubi/
  LIBS-y += drivers/mtd/spi/
  LIBS-y += drivers/net/
  LIBS-y += drivers/net/phy/
  LIBS-y += drivers/pci/
  LIBS-y += drivers/power/ \
  	drivers/power/fuel_gauge/ \
  	drivers/power/mfd/ \
  	drivers/power/pmic/ \
  	drivers/power/battery/
  LIBS-y += drivers/spi/
  LIBS-$(CONFIG_FMAN_ENET) += drivers/net/fm/

  LIBS-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/

  LIBS-y += drivers/serial/
  LIBS-y += drivers/usb/eth/
  LIBS-y += drivers/usb/gadget/
  LIBS-y += drivers/usb/host/
  LIBS-y += drivers/usb/musb/
  LIBS-y += drivers/usb/musb-new/
  LIBS-y += drivers/usb/phy/
  LIBS-y += drivers/usb/ulpi/
  LIBS-y += common/
  LIBS-y += lib/libfdt/

  LIBS-$(CONFIG_API) += api/

  LIBS-y += post/
  LIBS-y += test/

  ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))

  LIBS-y += arch/$(ARCH)/imx-common/

  endif

  LIBS-$(CONFIG_ARM) += arch/arm/cpu/
  LIBS-$(CONFIG_PPC) += arch/powerpc/cpu/

  LIBS-y += board/$(BOARDDIR)/

  LIBS-y := $(patsubst %/, %/built-in.o, $(LIBS-y))

  LIBS := $(addprefix $(obj),$(sort $(LIBS-y)))

  .PHONY : $(LIBS)

  # Add GCC lib

  ifdef USE_PRIVATE_LIBGCC
  ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")

  PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/libgcc.o

  else
  PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
  endif
  else

  PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc

  endif
  PLATFORM_LIBS += $(PLATFORM_LIBGCC)
  export PLATFORM_LIBS

  # Special flags for CPP when processing the linker script.
  # Pass the version down so we can handle backwards compatibility
  # on the fly.
  LDPPFLAGS += \
  	-include $(TOPDIR)/include/u-boot/u-boot.lds.h \

  	-DCPUDIR=$(CPUDIR) \

  	$(shell $(LD) --version | \
  	  sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')

  __OBJS := $(subst $(obj),,$(OBJS))

  __LIBS := $(subst $(obj),,$(LIBS))

  #########################################################################

  #########################################################################

  ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
  BOARD_SIZE_CHECK = \
  	@actual=`wc -c $@ | awk '{print $$1}'`; \

  	limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \

  	if test $$actual -gt $$limit; then \

  		echo "$@ exceeds file size limit:" >&2 ; \
  		echo "  limit:  $$limit bytes" >&2 ; \
  		echo "  actual: $$actual bytes" >&2 ; \
  		echo "  excess: $$((actual - limit)) bytes" >&2; \

  		exit 1; \
  	fi
  else
  BOARD_SIZE_CHECK =
  endif

  # Statically apply RELA-style relocations (currently arm64 only)
  ifneq ($(CONFIG_STATIC_RELA),)
  # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
  DO_STATIC_RELA = \
  	start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
  	end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
  	$(obj)tools/relocate-rela $(2) $(3) $$start $$end
  else
  DO_STATIC_RELA =
  endif

  # Always append ALL so that arch config.mk's can add custom ones

  ALL-y += $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map

  ALL-$(CONFIG_NAND_U_BOOT) += $(obj)u-boot-nand.bin
  ALL-$(CONFIG_ONENAND_U_BOOT) += $(obj)u-boot-onenand.bin

  ALL-$(CONFIG_RAMBOOT_PBL) += $(obj)u-boot.pbl

  ALL-$(CONFIG_SPL) += $(obj)spl/u-boot-spl.bin

  ALL-$(CONFIG_SPL_FRAMEWORK) += $(obj)u-boot.img

  ALL-$(CONFIG_TPL) += $(obj)tpl/u-boot-tpl.bin

  ALL-$(CONFIG_OF_SEPARATE) += $(obj)u-boot.dtb $(obj)u-boot-dtb.bin

  ifneq ($(CONFIG_SPL_TARGET),)
  ALL-$(CONFIG_SPL) += $(obj)$(subst ",,$(CONFIG_SPL_TARGET))
  endif

  ALL-$(CONFIG_REMAKE_ELF) += $(obj)u-boot.elf

  # enable combined SPL/u-boot/dtb rules for tegra

  ifneq ($(CONFIG_TEGRA),)

  ifeq ($(CONFIG_SPL),y)

  ifeq ($(CONFIG_OF_SEPARATE),y)
  ALL-y += $(obj)u-boot-dtb-tegra.bin
  else
  ALL-y += $(obj)u-boot-nodtb-tegra.bin
  endif
  endif

  endif

  build := -f $(TOPDIR)/scripts/Makefile.build -C

  all:		$(ALL-y) $(SUBDIR_EXAMPLES-y)

  $(obj)u-boot.dtb:	checkdtc $(obj)u-boot

  		$(MAKE) $(build) dts binary

  		mv $(obj)dts/dt.dtb $@
  
  $(obj)u-boot-dtb.bin:	$(obj)u-boot.bin $(obj)u-boot.dtb
  		cat $^ >$@

  $(obj)u-boot.hex:	$(obj)u-boot

  		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@

  $(obj)u-boot.srec:	$(obj)u-boot

  		$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@

  $(obj)u-boot.bin:	$(obj)u-boot

  		$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@

  		$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))

  		$(BOARD_SIZE_CHECK)

  $(obj)u-boot.ldr:	$(obj)u-boot

  		$(CREATE_LDR_ENV)

  		$(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)

  		$(BOARD_SIZE_CHECK)

  
  $(obj)u-boot.ldr.hex:	$(obj)u-boot.ldr
  		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@ -I binary
  
  $(obj)u-boot.ldr.srec:	$(obj)u-boot.ldr
  		$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@ -I binary

  #
  # U-Boot entry point, needed for booting of full-blown U-Boot
  # from the SPL U-Boot version.
  #
  ifndef CONFIG_SYS_UBOOT_START
  CONFIG_SYS_UBOOT_START := 0
  endif

  $(obj)u-boot.img:	$(obj)u-boot.bin

  		$(obj)tools/mkimage -A $(ARCH) -T firmware -C none \

  		-O u-boot -a $(CONFIG_SYS_TEXT_BASE) \
  		-e $(CONFIG_SYS_UBOOT_START) \

  		-n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' $(VERSION_FILE) | \

  			sed -e 's/"[	 ]*$$/ for $(BOARD) board"/') \
  		-d $< $@

  $(obj)u-boot.imx: $(obj)u-boot.bin depend

  		$(MAKE) $(build) $(SRCTREE)/arch/arm/imx-common $(OBJTREE)/u-boot.imx

  $(obj)u-boot.kwb:       $(obj)u-boot.bin

  		$(obj)tools/mkimage -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \

  		-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -d $< $@

  $(obj)u-boot.pbl:	$(obj)u-boot.bin
  		$(obj)tools/mkimage -n $(CONFIG_PBLRCW_CONFIG) \
  		-R $(CONFIG_PBLPBI_CONFIG) -T pblimage \
  		-d $< $@

  $(obj)u-boot.sha1:	$(obj)u-boot.bin

  		$(obj)tools/ubsha1 $(obj)u-boot.bin

  $(obj)u-boot.dis:	$(obj)u-boot

  		$(OBJDUMP) -d $< > $@

  # $@ is output, $(1) and $(2) are inputs, $(3) is padded intermediate,
  # $(4) is pad-to
  SPL_PAD_APPEND = \
  		$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(4) -I binary -O binary \
  		$(1) $(obj)$(3); \

  		cat $(obj)$(3) $(2) > $@; \

  		rm $(obj)$(3)

  ifdef CONFIG_TPL
  SPL_PAYLOAD := $(obj)tpl/u-boot-with-tpl.bin
  else
  SPL_PAYLOAD := $(obj)u-boot.bin
  endif

  $(obj)u-boot-with-spl.bin: $(obj)spl/u-boot-spl.bin $(SPL_PAYLOAD)
  		$(call SPL_PAD_APPEND,$<,$(SPL_PAYLOAD),spl/u-boot-spl-pad.bin,$(CONFIG_SPL_PAD_TO))
  
  $(obj)tpl/u-boot-with-tpl.bin: $(obj)tpl/u-boot-tpl.bin $(obj)u-boot.bin

  		$(call SPL_PAD_APPEND,$<,$(obj)u-boot.bin,tpl/u-boot-tpl-pad.bin,$(CONFIG_TPL_PAD_TO))

  $(obj)u-boot-with-spl.imx: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin

  		$(MAKE) $(build) $(SRCTREE)/arch/arm/imx-common \

  			$(OBJTREE)/u-boot-with-spl.imx

  $(obj)u-boot-with-nand-spl.imx: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin

  		$(MAKE) $(build) $(SRCTREE)/arch/arm/imx-common \

  			$(OBJTREE)/u-boot-with-nand-spl.imx

  $(obj)u-boot.ubl:       $(obj)u-boot-with-spl.bin

  		$(obj)tools/mkimage -n $(UBL_CONFIG) -T ublimage \

  		-e $(CONFIG_SYS_TEXT_BASE) -d $< $(obj)u-boot.ubl

  $(obj)u-boot.ais:       $(obj)spl/u-boot-spl.bin $(obj)u-boot.img

  		$(obj)tools/mkimage -s -n $(if $(CONFIG_AIS_CONFIG_FILE),$(CONFIG_AIS_CONFIG_FILE),"/dev/null") \
  			-T aisimage \

  			-e $(CONFIG_SPL_TEXT_BASE) \
  			-d $(obj)spl/u-boot-spl.bin \
  			$(obj)spl/u-boot-spl.ais
  		$(OBJCOPY) ${OBJCFLAGS} -I binary \
  			--pad-to=$(CONFIG_SPL_MAX_SIZE) -O binary \
  			$(obj)spl/u-boot-spl.ais $(obj)spl/u-boot-spl-pad.ais

  		cat $(obj)spl/u-boot-spl-pad.ais $(obj)u-boot.img > \

  			$(obj)u-boot.ais

  $(obj)u-boot.sb:       $(obj)u-boot.bin $(obj)spl/u-boot-spl.bin

  		$(MAKE) $(build) $(SRCTREE)/$(CPUDIR)/$(SOC)/ $(OBJTREE)/u-boot.sb

  # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
  # Both images are created using mkimage (crc etc), so that the ROM
  # bootloader can check its integrity. Padding needs to be done to the
  # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
  # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
  # The resulting image containing both U-Boot images is called u-boot.spr
  $(obj)u-boot.spr:	$(obj)u-boot.img $(obj)spl/u-boot-spl.bin
  		$(obj)tools/mkimage -A $(ARCH) -T firmware -C none \
  		-a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER \
  		-d $(obj)spl/u-boot-spl.bin $(obj)spl/u-boot-spl.img
  		tr "\000" "\377" < /dev/zero | dd ibs=1 count=$(CONFIG_SPL_PAD_TO) \
  			of=$(obj)spl/u-boot-spl-pad.img 2>/dev/null
  		dd if=$(obj)spl/u-boot-spl.img of=$(obj)spl/u-boot-spl-pad.img \
  			conv=notrunc 2>/dev/null
  		cat $(obj)spl/u-boot-spl-pad.img $(obj)u-boot.img > $@

  ifneq ($(CONFIG_TEGRA),)

  $(obj)u-boot-nodtb-tegra.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin

  		$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SYS_TEXT_BASE) -O binary $(obj)spl/u-boot-spl $(obj)spl/u-boot-spl-pad.bin

  		cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $@

  		rm $(obj)spl/u-boot-spl-pad.bin

  
  ifeq ($(CONFIG_OF_SEPARATE),y)
  $(obj)u-boot-dtb-tegra.bin: $(obj)u-boot-nodtb-tegra.bin $(obj)u-boot.dtb
  		cat $(obj)u-boot-nodtb-tegra.bin $(obj)u-boot.dtb > $@
  endif

  endif

  $(obj)u-boot-img.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.img
  		cat $(obj)spl/u-boot-spl.bin $(obj)u-boot.img > $@

  # PPC4xx needs the SPL at the end of the image, since the reset vector
  # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
  # and need to introduce a new build target with the full blown U-Boot
  # at the start padded up to the start of the SPL image. And then concat
  # the SPL image to the end.
  $(obj)u-boot-img-spl-at-end.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.img
  		tr "\000" "\377" < /dev/zero | dd ibs=1 count=$(CONFIG_UBOOT_PAD_TO) \
  			of=$(obj)u-boot-pad.img 2>/dev/null
  		dd if=$(obj)u-boot.img of=$(obj)u-boot-pad.img \
  			conv=notrunc 2>/dev/null
  		cat $(obj)u-boot-pad.img $(obj)spl/u-boot-spl.bin > $@

  # Create a new ELF from a raw binary file.  This is useful for arm64
  # where static relocation needs to be performed on the raw binary,
  # but certain simulators only accept an ELF file (but don't do the
  # relocation).
  # FIXME refactor dts/Makefile to share target/arch detection
  $(obj)u-boot.elf: $(obj)u-boot.bin
  	@$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
  		$< $(obj)u-boot-elf.o
  	@$(LD) $(obj)u-boot-elf.o -o $@ \
  		--defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
  		-Ttext=$(CONFIG_SYS_TEXT_BASE)

  ifeq ($(CONFIG_SANDBOX),y)
  GEN_UBOOT = \
  		cd $(LNDIR) && $(CC) $(SYMS) -T $(obj)u-boot.lds \
  			-Wl,--start-group $(__LIBS) -Wl,--end-group \
  			$(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map -o u-boot
  else

  GEN_UBOOT = \

  		cd $(LNDIR) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \

  			$(__OBJS) \

  			--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \

  			-Map u-boot.map -o u-boot

  endif

  $(obj)u-boot:	depend \

  		$(SUBDIR_TOOLS) $(OBJS) $(LIBS) $(LDSCRIPT) $(obj)u-boot.lds

  		$(GEN_UBOOT)
  ifeq ($(CONFIG_KALLSYMS),y)

  		smap=`$(call SYSTEM_MAP,$(obj)u-boot) | \

  			awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
  		$(CC) $(CFLAGS) -DSYSTEM_MAP="\"$${smap}\"" \
  			-c common/system_map.c -o $(obj)common/system_map.o

  		$(GEN_UBOOT) $(obj)common/system_map.o
  endif

  $(OBJS):
  	@:

  $(LIBS):	depend $(SUBDIR_TOOLS)

  		$(MAKE) $(build) $(dir $(subst $(obj),,$@))

  $(SUBDIRS):	depend

  		$(MAKE) -C $@ all

  $(SUBDIR_EXAMPLES-y): $(obj)u-boot

  $(LDSCRIPT):	depend

  		$(MAKE) -C $(dir $@) $(notdir $@)

  $(obj)u-boot.lds: $(LDSCRIPT)

  		$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$< >$@

  nand_spl:	$(TIMESTAMP_FILE) $(VERSION_FILE) depend

  		$(MAKE) -C nand_spl/board/$(BOARDDIR) all

  $(obj)u-boot-nand.bin:	nand_spl $(obj)u-boot.bin

  		cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin

  $(obj)spl/u-boot-spl.bin:	$(SUBDIR_TOOLS) depend

  		$(MAKE) -C spl all

  $(obj)tpl/u-boot-tpl.bin:	$(SUBDIR_TOOLS) depend
  		$(MAKE) -C spl all CONFIG_TPL_BUILD=y

  # Explicitly make _depend in subdirs containing multiple targets to prevent
  # parallel sub-makes creating .depend files simultaneously.

  depend dep:	$(TIMESTAMP_FILE) $(VERSION_FILE) \

  		$(obj)include/spl-autoconf.mk \

  		$(obj)include/tpl-autoconf.mk \

  		$(obj)include/autoconf.mk \

  		$(obj)include/generated/generic-asm-offsets.h \
  		$(obj)include/generated/asm-offsets.h

  TAG_SUBDIRS = $(SUBDIRS)
  TAG_SUBDIRS += $(dir $(__LIBS))

  TAG_SUBDIRS += include

  FIND := find
  FINDFLAGS := -L

  checkstack:
  		$(CROSS_COMPILE)objdump -d $(obj)u-boot \
  			`$(FIND) $(obj) -name u-boot-spl -print` | \
  			perl $(src)tools/checkstack.pl $(ARCH)

  tags ctags:

  		ctags -w -o $(obj)ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \

  						-name '*.[chS]' -print`

  
  etags:

  		etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \

  						-name '*.[chS]' -print`

  cscope:

  		$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
  						cscope.files

  		cscope -b -q -k

  SYSTEM_MAP = \
  		$(NM) $1 | \

  		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \

  		LC_ALL=C sort
  $(obj)System.map:	$(obj)u-boot

  		@$(call SYSTEM_MAP,$<) > $@

  checkthumb:
  	@if test $(call cc-version) -lt 0404; then \
  		echo -n '*** Your GCC does not produce working '; \
  		echo 'binaries in THUMB mode.'; \
  		echo '*** Your board is configured for THUMB mode.'; \
  		false; \
  	fi

  
  # GCC 3.x is reported to have problems generating the type of relocation
  # that U-Boot wants.
  # See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
  checkgcc4:
  	@if test $(call cc-version) -lt 0400; then \
  		echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
  		false; \
  	fi

  checkdtc:
  	@if test $(call dtc-version) -lt 0104; then \
  		echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
  		false; \
  	fi

  #
  # Auto-generate the autoconf.mk file (which is included by all makefiles)
  #
  # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
  # the dep file is only include in this top level makefile to determine when
  # to regenerate the autoconf.mk file.

  $(obj)include/autoconf.mk.dep: $(obj)include/config.h include/common.h
  	@$(XECHO) Generating $@ ; \

  	set -e ; \

  	: Generate the dependancies ; \

  	$(CC) -x c -DDO_DEPS_ONLY -M $(CFLAGS) $(CPPFLAGS) \

  		-MQ $(obj)include/autoconf.mk include/common.h > $@
  
  $(obj)include/autoconf.mk: $(obj)include/config.h
  	@$(XECHO) Generating $@ ; \
  	set -e ; \

  	: Extract the config macros ; \

  	$(CPP) $(CFLAGS) -DDO_DEPS_ONLY -dM include/common.h | \

  		sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
  	mv $@.tmp $@

  # Auto-generate the spl-autoconf.mk file (which is included by all makefiles for SPL)

  $(obj)include/tpl-autoconf.mk: $(obj)include/config.h
  	@$(XECHO) Generating $@ ; \
  	set -e ; \
  	: Extract the config macros ; \
  	$(CPP) $(CFLAGS) -DCONFIG_TPL_BUILD  -DCONFIG_SPL_BUILD\
  			-DDO_DEPS_ONLY -dM include/common.h | \
  	sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
  	mv $@.tmp $@

  $(obj)include/spl-autoconf.mk: $(obj)include/config.h
  	@$(XECHO) Generating $@ ; \
  	set -e ; \
  	: Extract the config macros ; \
  	$(CPP) $(CFLAGS) -DCONFIG_SPL_BUILD -DDO_DEPS_ONLY -dM include/common.h | \
  	sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
  	mv $@.tmp $@

  $(obj)include/generated/generic-asm-offsets.h:	$(obj)include/autoconf.mk.dep \

  	$(obj)include/spl-autoconf.mk \

  	$(obj)include/tpl-autoconf.mk \

  	$(obj)lib/asm-offsets.s
  	@$(XECHO) Generating $@
  	tools/scripts/make-asm-offsets $(obj)lib/asm-offsets.s $@
  
  $(obj)lib/asm-offsets.s:	$(obj)include/autoconf.mk.dep \

  	$(obj)include/spl-autoconf.mk \

  	$(obj)include/tpl-autoconf.mk \

  	$(src)lib/asm-offsets.c
  	@mkdir -p $(obj)lib
  	$(CC) -DDO_DEPS_ONLY \
  		$(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
  		-o $@ $(src)lib/asm-offsets.c -c -S

  $(obj)include/generated/asm-offsets.h:	$(obj)include/autoconf.mk.dep \

  	$(obj)include/spl-autoconf.mk \

  	$(obj)include/tpl-autoconf.mk \

  	$(obj)$(CPUDIR)/$(SOC)/asm-offsets.s

  	@$(XECHO) Generating $@

  	tools/scripts/make-asm-offsets $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s $@

  $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s:	$(obj)include/autoconf.mk.dep \

  	$(obj)include/spl-autoconf.mk \
  	$(obj)include/tpl-autoconf.mk

  	@mkdir -p $(obj)$(CPUDIR)/$(SOC)
  	if [ -f $(src)$(CPUDIR)/$(SOC)/asm-offsets.c ];then \
  		$(CC) -DDO_DEPS_ONLY \
  		$(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
  			-o $@ $(src)$(CPUDIR)/$(SOC)/asm-offsets.c -c -S; \
  	else \
  		touch $@; \
  	fi

  #########################################################################

  else	# !config.mk

  all $(obj)u-boot.hex $(obj)u-boot.srec $(obj)u-boot.bin \
  $(obj)u-boot.img $(obj)u-boot.dis $(obj)u-boot \

  $(filter-out tools,$(SUBDIRS)) \

  depend dep tags ctags etags cscope $(obj)System.map:

  	@echo "System not configured - see README" >&2
  	@ exit 1

  tools: $(VERSION_FILE) $(TIMESTAMP_FILE)

  	$(MAKE) -C $@ all

  endif	# config.mk

  # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
  # R_AARCH64_RELATIVE (64-bit).

  checkarmreloc: $(obj)u-boot

  	@RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
  		grep R_A | sort -u`"; \
  	if test "$$RELOC" != "R_ARM_RELATIVE" -a \
  		 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
  		echo "$< contains unexpected relocations: $$RELOC"; \
  		false; \
  	fi

  $(VERSION_FILE):

  		@mkdir -p $(dir $(VERSION_FILE))

  		@( localvers='$(shell $(TOPDIR)/tools/setlocalversion $(TOPDIR))' ; \
  		   printf '#define PLAIN_VERSION "%s%s"
  ' \
  			"$(U_BOOT_VERSION)" "$${localvers}" ; \
  		   printf '#define U_BOOT_VERSION "U-Boot %s%s"
  ' \
  			"$(U_BOOT_VERSION)" "$${localvers}" ; \
  		) > $@.tmp
  		@( printf '#define CC_VERSION_STRING "%s"
  ' \
  		 '$(shell $(CC) --version | head -n 1)' )>>  $@.tmp
  		@( printf '#define LD_VERSION_STRING "%s"
  ' \
  		 '$(shell $(LD) -v | head -n 1)' )>>  $@.tmp
  		@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@

  $(TIMESTAMP_FILE):
  		@mkdir -p $(dir $(TIMESTAMP_FILE))

  		@LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"' > $@.tmp
  		@LC_ALL=C date +'#define U_BOOT_TIME "%T"' >> $@.tmp
  		@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@

  easylogo env gdb:
  	$(MAKE) -C tools/$@ all MTD_VERSION=${MTD_VERSION}
  gdbtools: gdb

  xmldocs pdfdocs psdocs htmldocs mandocs: tools/kernel-doc/docproc
  	$(MAKE) U_BOOT_VERSION=$(U_BOOT_VERSION) -C doc/DocBook/ $@

  tools-all: easylogo env gdb $(VERSION_FILE) $(TIMESTAMP_FILE)

  	$(MAKE) -C tools HOST_TOOLS_ALL=y

  .PHONY : CHANGELOG
  CHANGELOG:

  	git log --no-merges U-Boot-1_1_5.. | \
  	unexpand -a | sed -e 's/\s\s*$$//' > $@

  include/license.h: tools/bin2header COPYING

  	cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h

  #########################################################################
  
  unconfig:

  	@rm -f $(obj)include/config.h $(obj)include/config.mk \

  		$(obj)board/*/config.tmp $(obj)board/*/*/config.tmp \

  		$(obj)include/autoconf.mk $(obj)include/autoconf.mk.dep \

  		$(obj)include/spl-autoconf.mk \
  		$(obj)include/tpl-autoconf.mk

  %_config::	unconfig
  	@$(MKCONFIG) -A $(@:_config=)

  sinclude $(obj).boards.depend
  $(obj).boards.depend:	boards.cfg

  	@awk '(NF && $$1 !~ /^#/) { print $$7 ": " $$7 "_config; $$(MAKE)" }' $< > $@

  #########################################################################

  #########################################################################

  
  clean:

  	@rm -f $(obj)examples/standalone/82559_eeprom			  \

  	       $(obj)examples/standalone/atmel_df_pow2			  \

  	       $(obj)examples/standalone/eepro100_eeprom		  \
  	       $(obj)examples/standalone/hello_world			  \
  	       $(obj)examples/standalone/interrupt			  \
  	       $(obj)examples/standalone/mem_to_mem_idma2intr		  \
  	       $(obj)examples/standalone/sched				  \

  	       $(obj)examples/standalone/smc911{11,x}_eeprom		  \

  	       $(obj)examples/standalone/test_burst			  \
  	       $(obj)examples/standalone/timer

  	@rm -f $(obj)examples/api/demo{,.bin}

  	@rm -f $(obj)tools/bmp_logo	   $(obj)tools/easylogo/easylogo  \
  	       $(obj)tools/env/{fw_printenv,fw_setenv}			  \
  	       $(obj)tools/envcrc					  \
  	       $(obj)tools/gdb/{astest,gdbcont,gdbsend}			  \
  	       $(obj)tools/gen_eth_addr    $(obj)tools/img2srec		  \

  	       $(obj)tools/mk{env,}image   $(obj)tools/mpc86x_clk	  \

  	       $(obj)tools/mk{$(BOARD),}spl				  \

  	       $(obj)tools/mxsboot					  \

  	       $(obj)tools/ncb		   $(obj)tools/ubsha1		  \

  	       $(obj)tools/kernel-doc/docproc				  \
  	       $(obj)tools/proftool

  	@rm -f $(obj)board/cray/L1/{bootscript.c,bootscript.image}	  \

  	       $(obj)board/matrix_vision/*/bootscript.img		  \

  	       $(obj)board/voiceblue/eeprom 				  \

  	       $(obj)u-boot.lds						  \

  	       $(obj)arch/blackfin/cpu/init.{lds,elf}

  	@rm -f $(obj)include/bmp_logo.h

  	@rm -f $(obj)include/bmp_logo_data.h

  	@rm -f $(obj)lib/asm-offsets.s

  	@rm -f $(obj)include/generated/asm-offsets.h
  	@rm -f $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s

  	@rm -f $(TIMESTAMP_FILE) $(VERSION_FILE)

  	@$(MAKE) -s -C doc/DocBook/ cleandocs

  	@find $(OBJTREE) -type f \

  		\( -name 'core' -o -name '*.bak' -o -name '*~' -o -name '*.su' \

  		-o -name '*.o'	-o -name '*.a' -o -name '*.exe' \
  		-o -name '*.cfgtmp' \) -print \

  		| xargs rm -f

  # Removes everything not needed for testing u-boot
  tidy:	clean
  	@find $(OBJTREE) -type f \( -name '*.depend*' \) -print | xargs rm -f
  
  clobber:	tidy
  	@find $(OBJTREE) -type f \( -name '*.srec' \
  		-o -name '*.bin' -o -name u-boot.img \) \
  		-print0 | xargs -0 rm -f

  	@rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS \

  		$(obj)cscope.* $(obj)*.*~

  	@rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL-y)

  	@rm -f $(obj)u-boot.kwb

  	@rm -f $(obj)u-boot.pbl

  	@rm -f $(obj)u-boot.imx

  	@rm -f $(obj)u-boot-with-spl.imx

  	@rm -f $(obj)u-boot-with-nand-spl.imx

  	@rm -f $(obj)u-boot.ubl

  	@rm -f $(obj)u-boot.ais

  	@rm -f $(obj)u-boot.dtb

  	@rm -f $(obj)u-boot.sb

  	@rm -f $(obj)u-boot.bd

  	@rm -f $(obj)u-boot.spr

  	@rm -f $(obj)nand_spl/{u-boot.{lds,lst},System.map}
  	@rm -f $(obj)nand_spl/{u-boot-nand_spl.lds,u-boot-spl,u-boot-spl.map}
  	@rm -f $(obj)spl/{u-boot-spl,u-boot-spl.bin,u-boot-spl.map}

  	@rm -f $(obj)spl/u-boot-spl.lds

  	@rm -f $(obj)tpl/{u-boot-tpl,u-boot-tpl.bin,u-boot-tpl.map}
  	@rm -f $(obj)tpl/u-boot-spl.lds

  	@rm -f $(obj)MLO MLO.byteswap

  	@rm -f $(obj)SPL

  	@rm -f $(obj)tools/xway-swap-bytes

  	@rm -fr $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm

  	@rm -fr $(obj)include/generated

  	@[ ! -d $(obj)nand_spl ] || find $(obj)nand_spl -name "*" -type l -print | xargs rm -f

  	@rm -f $(obj)dts/*.tmp

  	@rm -f $(obj)spl/u-boot-spl{,-pad}.ais

  mrproper \
  distclean:	clobber unconfig

  ifneq ($(OBJTREE),$(SRCTREE))

  	rm -rf $(obj)*

  endif

  
  backup:
  	F=`basename $(TOPDIR)` ; cd .. ; \

  	gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F

  
  #########################################################################