#
  # SPDX-License-Identifier:	GPL-2.0+
  #

  VERSION = 2018

  PATCHLEVEL = 03

  SUBLEVEL =

  EXTRAVERSION =

  NAME =

  # *DOCUMENTATION*
  # To see a list of typical targets execute "make help"
  # More info can be located in ./README
  # Comments in this file are targeted only to the developer, do not
  # expect to learn how to build the kernel reading this file.

  # o Do not use make's built-in rules and variables
  #   (this increases performance and avoids hard-to-debug behaviour);
  # o Look for make include files relative to root of kernel src
  MAKEFLAGS += -rR --include-dir=$(CURDIR)

  
  # Avoid funny character set dependencies
  unexport LC_ALL
  LC_COLLATE=C
  LC_NUMERIC=C
  export LC_COLLATE LC_NUMERIC

  # Avoid interference with shell env settings
  unexport GREP_OPTIONS

  # We are using a recursive build, so we need to do a little thinking
  # to get the ordering right.
  #
  # Most importantly: sub-Makefiles should only ever modify files in
  # their own directory. If in some directory we have a dependency on
  # a file in another dir (which doesn't happen often, but it's often
  # unavoidable when linking the built-in.o targets which finally
  # turn into vmlinux), we will call a sub make in that other dir, and
  # after that we are sure that everything which is in that other dir
  # is now up to date.
  #
  # The only cases where we need to modify files which have global
  # effects are thus separated out and done before the recursive
  # descending is started. They are now explicitly listed as the
  # prepare rule.

  # Beautify output
  # ---------------------------------------------------------------------------
  #
  # Normally, we echo the whole command before executing it. By making
  # that echo $($(quiet)$(cmd)), we now have the possibility to set
  # $(quiet) to choose other forms of output instead, e.g.
  #
  #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  #
  # If $(quiet) is empty, the whole command will be printed.
  # If it is set to "quiet_", only the short version will be printed.
  # If it is set to "silent_", nothing will be printed at all, since
  # the variable $(silent_cmd_cc_o_c) doesn't exist.
  #
  # A simple variant is to prefix commands with $(Q) - that's useful
  # for commands that shall be hidden in non-verbose mode.
  #
  #	$(Q)ln $@ :<
  #
  # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  #

  # To put more focus on warnings, be less verbose as default
  # Use 'make V=1' to see the full commands
  
  ifeq ("$(origin V)", "command line")
    KBUILD_VERBOSE = $(V)
  endif
  ifndef KBUILD_VERBOSE
    KBUILD_VERBOSE = 0
  endif

  ifeq ($(KBUILD_VERBOSE),1)
    quiet =
    Q =
  else
    quiet=quiet_
    Q = @
  endif

  # If the user is running make -s (silent mode), suppress echoing of
  # commands
  
  ifneq ($(filter 4.%,$(MAKE_VERSION)),)	# make-4
  ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
    quiet=silent_

  endif

  else					# make-3.8x
  ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
    quiet=silent_

  endif

  endif

  export quiet Q KBUILD_VERBOSE

  # kbuild supports saving output files in a separate directory.
  # To locate output files in a separate directory two syntaxes are supported.
  # In both cases the working directory must be the root of the kernel src.
  # 1) O=
  # Use "make O=dir/to/store/output/files/"

  #

  # 2) Set KBUILD_OUTPUT
  # Set the environment variable KBUILD_OUTPUT to point to the directory
  # where the output files shall be placed.
  # export KBUILD_OUTPUT=dir/to/store/output/files/
  # make

  #

  # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  # variable.

  # KBUILD_SRC is set on invocation of make in OBJ directory
  # KBUILD_SRC is not intended to be used by the regular user (for now)
  ifeq ($(KBUILD_SRC),)

  # OK, Make called in directory where kernel src resides
  # Do we want to locate output files in a separate directory?

  ifeq ("$(origin O)", "command line")

    KBUILD_OUTPUT := $(O)
  endif

  # That's our default target when none is given on the command line
  PHONY := _all
  _all:
  
  # Cancel implicit rules on top Makefile
  $(CURDIR)/Makefile Makefile: ;
  
  ifneq ($(KBUILD_OUTPUT),)
  # Invoke a second make in the output directory, passing relevant variables
  # check that the output directory actually exists
  saved-output := $(KBUILD_OUTPUT)

  KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
  								&& /bin/pwd)

  $(if $(KBUILD_OUTPUT),, \

       $(error failed to create output directory "$(saved-output)"))

  
  PHONY += $(MAKECMDGOALS) sub-make
  
  $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
  	@:
  
  sub-make: FORCE

  	$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
  	-f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))

  
  # Leave processing to above invocation of make
  skip-makefile := 1
  endif # ifneq ($(KBUILD_OUTPUT),)
  endif # ifeq ($(KBUILD_SRC),)
  
  # We process the rest of the Makefile if this is the final invocation of make
  ifeq ($(skip-makefile),)

  # Do not print "Entering directory ...",
  # but we want to display it when entering to the output directory
  # so that IDEs/editors are able to understand relative filenames.
  MAKEFLAGS += --no-print-directory
  
  # Call a source code checker (by default, "sparse") as part of the
  # C compilation.
  #
  # Use 'make C=1' to enable checking of only re-compiled files.
  # Use 'make C=2' to enable checking of *all* source files, regardless
  # of whether they are re-compiled or not.
  #
  # See the file "Documentation/sparse.txt" for more details, including
  # where to get the "sparse" utility.
  
  ifeq ("$(origin C)", "command line")
    KBUILD_CHECKSRC = $(C)
  endif
  ifndef KBUILD_CHECKSRC
    KBUILD_CHECKSRC = 0
  endif
  
  # Use make M=dir to specify directory of external module to build
  # Old syntax make ... SUBDIRS=$PWD is still supported
  # Setting the environment variable KBUILD_EXTMOD take precedence
  ifdef SUBDIRS
    KBUILD_EXTMOD ?= $(SUBDIRS)
  endif
  
  ifeq ("$(origin M)", "command line")
    KBUILD_EXTMOD := $(M)
  endif

  # If building an external module we do not care about the all: rule
  # but instead _all depend on modules

  PHONY += all

  ifeq ($(KBUILD_EXTMOD),)

  _all: all

  else

  _all: modules

  endif

  ifeq ($(KBUILD_SRC),)
          # building in the source tree
          srctree := .
  else
          ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
                  # building in a subdirectory of the source tree
                  srctree := ..
          else
                  srctree := $(KBUILD_SRC)
          endif
  endif
  objtree		:= .

  src		:= $(srctree)
  obj		:= $(objtree)
  
  VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
  
  export srctree objtree VPATH

  # Make sure CDPATH settings don't interfere
  unexport CDPATH

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

  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

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

  # set default to nothing for native builds

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

  CROSS_COMPILE ?=

  endif

  KCONFIG_CONFIG	?= .config
  export KCONFIG_CONFIG

  # SHELL used by kbuild
  CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  	  else if [ -x /bin/bash ]; then echo /bin/bash; \
  	  else echo sh; fi ; fi)

  HOSTCC       = cc
  HOSTCXX      = c++

  HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
  		$(if $(CONFIG_TOOLS_DEBUG),-g)

  HOSTCXXFLAGS = -O2

  ifeq ($(HOSTOS),cygwin)
  HOSTCFLAGS	+= -ansi
  endif
  
  # Mac OS X / Darwin's C preprocessor is Apple specific.  It
  # generates numerous errors and warnings.  We want to bypass it
  # and use GNU C's cpp.	To do this we pass the -traditional-cpp
  # option to the compiler.  Note that the -traditional-cpp flag
  # DOES NOT have the same semantics as GNU C's flag, all it does
  # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.

  #

  # Apple's linker is similar, thanks to the new 2 stage linking
  # multiple symbol definitions are treated as errors, hence the
  # -multiply_defined suppress option to turn off this error.

  #

  ifeq ($(HOSTOS),darwin)
  # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
  DARWIN_MAJOR_VERSION	= $(shell sw_vers -productVersion | cut -f 1 -d '.')
  DARWIN_MINOR_VERSION	= $(shell sw_vers -productVersion | cut -f 2 -d '.')
  
  os_x_before	= $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
  	$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
  
  # Snow Leopards build environment has no longer restrictions as described above
  HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
  HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
  HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")

  
  # since Lion (10.7) ASLR is on by default, but we use linker generated lists
  # in some host tools which is a problem then ... so disable ASLR for these
  # tools
  HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")

  endif

  # Decide whether to build built-in, modular, or both.
  # Normally, just do built-in.
  
  KBUILD_MODULES :=
  KBUILD_BUILTIN := 1

  # If we have only "make modules", don't compile built-in objects.
  # When we're building modules with modversions, we need to consider
  # the built-in objects during the descend as well, in order to
  # make sure the checksums are up to date before we record them.

  
  ifeq ($(MAKECMDGOALS),modules)
    KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
  endif

  # If we have "make <whatever> modules", compile modules
  # in addition to whatever we do anyway.
  # Just "make" or "make all" shall build modules as well

  
  # U-Boot does not need modules
  #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
  #  KBUILD_MODULES := 1
  #endif
  
  #ifeq ($(MAKECMDGOALS),)
  #  KBUILD_MODULES := 1
  #endif
  
  export KBUILD_MODULES KBUILD_BUILTIN
  export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD

  # We need some generic definitions (do not try to remake the file).

  scripts/Kbuild.include: ;
  include scripts/Kbuild.include

  # Make variables (CC, etc...)

  AS		= $(CROSS_COMPILE)as
  # Always use GNU ld
  ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
  LD		= $(CROSS_COMPILE)ld.bfd

  else

  LD		= $(CROSS_COMPILE)ld
  endif
  CC		= $(CROSS_COMPILE)gcc
  CPP		= $(CC) -E
  AR		= $(CROSS_COMPILE)ar
  NM		= $(CROSS_COMPILE)nm
  LDR		= $(CROSS_COMPILE)ldr
  STRIP		= $(CROSS_COMPILE)strip
  OBJCOPY		= $(CROSS_COMPILE)objcopy
  OBJDUMP		= $(CROSS_COMPILE)objdump
  AWK		= awk

  PERL		= perl

  PYTHON		?= python

  DTC		?= $(objtree)/scripts/dtc/dtc

  CHECK		= sparse
  
  CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
  		  -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)

  KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__

  
  KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
  		   -Wno-format-security \
  		   -fno-builtin -ffreestanding

  KBUILD_CFLAGS	+= -fshort-wchar

  KBUILD_AFLAGS   := -D__ASSEMBLY__

  # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
  UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
  UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)

  export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION

  export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR

  export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
  export CPP AR NM LDR STRIP OBJCOPY OBJDUMP

  export MAKE AWK PERL PYTHON

  export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS

  export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS

  export KBUILD_CFLAGS KBUILD_AFLAGS

  # When compiling out-of-tree modules, put MODVERDIR in the module
  # tree rather than in the kernel tree. The kernel tree might
  # even be read-only.
  export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
  
  # Files to ignore in find ... statements

  export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
  			  -name CVS -o -name .pc -o -name .hg -o -name .git \) \
  			  -prune -o

  export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
  			 --exclude CVS --exclude .pc --exclude .hg --exclude .git
  
  # ===========================================================================
  # Rules shared between *config targets and build targets
  
  # Basic helpers built in scripts/
  PHONY += scripts_basic
  scripts_basic:
  	$(Q)$(MAKE) $(build)=scripts/basic
  	$(Q)rm -f .tmp_quiet_recordmcount
  
  # To avoid any implicit rule to kick in, define an empty command.
  scripts/basic/%: scripts_basic ;

  PHONY += outputmakefile
  # outputmakefile generates a Makefile in the output directory, if using a
  # separate output directory. This allows convenient use of make in the
  # output directory.
  outputmakefile:
  ifneq ($(KBUILD_SRC),)
  	$(Q)ln -fsn $(srctree) source
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
  	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)

  endif

  # To make sure we do not include .config for any of the *config targets
  # catch them early, and hand them over to scripts/kconfig/Makefile
  # It is allowed to specify more targets when calling make, including
  # mixing *config targets and build targets.
  # For example 'make oldconfig all'.
  # Detect when mixed targets is specified, and make a second invocation
  # of make so .config is not included in this case either (for *config).

  version_h := include/generated/version_autogenerated.h
  timestamp_h := include/generated/timestamp_autogenerated.h

  no-dot-config-targets := clean clobber mrproper distclean \

  			 help %docs check% coccicheck \

  			 ubootversion backup tests

  
  config-targets := 0
  mixed-targets  := 0
  dot-config     := 1
  
  ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
  	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
  		dot-config := 0
  	endif
  endif

  ifeq ($(KBUILD_EXTMOD),)
          ifneq ($(filter config %config,$(MAKECMDGOALS)),)
                  config-targets := 1

                  ifneq ($(words $(MAKECMDGOALS)),1)

                          mixed-targets := 1
                  endif
          endif

  endif

  ifeq ($(mixed-targets),1)
  # ===========================================================================
  # We're called with mixed targets (*config and build targets).
  # Handle them one by one.

  PHONY += $(MAKECMDGOALS) __build_one_by_one

  $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one

  	@:

  __build_one_by_one:

  	$(Q)set -e; \
  	for i in $(MAKECMDGOALS); do \
  		$(MAKE) -f $(srctree)/Makefile $$i; \
  	done

  else
  ifeq ($(config-targets),1)
  # ===========================================================================
  # *config targets only - make sure prerequisites are updated, and descend
  # in scripts/kconfig to make the *config target

  KBUILD_DEFCONFIG := sandbox_defconfig
  export KBUILD_DEFCONFIG KBUILD_KCONFIG

  config: scripts_basic outputmakefile FORCE

  	$(Q)$(MAKE) $(build)=scripts/kconfig $@

  
  %config: scripts_basic outputmakefile FORCE

  	$(Q)$(MAKE) $(build)=scripts/kconfig $@

  else
  # ===========================================================================
  # Build targets only - this includes vmlinux, arch specific targets, clean
  # targets and others. In general all targets except *config targets.

  # Additional helpers built in scripts/
  # Carefully list dependencies so we do not try to build scripts twice
  # in parallel
  PHONY += scripts
  scripts: scripts_basic include/config/auto.conf
  	$(Q)$(MAKE) $(build)=$(@)

  ifeq ($(dot-config),1)
  # Read in config

  -include include/config/auto.conf
  
  # Read in dependencies to all Kconfig* files, make sure to run
  # oldconfig if changes are detected.
  -include include/config/auto.conf.cmd
  
  # To avoid any implicit rule to kick in, define an empty command
  $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
  
  # If .config is newer than include/config/auto.conf, someone tinkered
  # with it and forgot to run make oldconfig.
  # if auto.conf.cmd is missing then we are probably in a cleaned tree so
  # we execute the config step to be sure to catch updated Kconfig files
  include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
  	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig

  	@# If the following part fails, include/config/auto.conf should be
  	@# deleted so "make silentoldconfig" will be re-run on the next build.
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
  		{ rm -f include/config/auto.conf; false; }
  	@# include/config.h has been updated after "make silentoldconfig".
  	@# We need to touch include/config/auto.conf so it gets newer
  	@# than include/config.h.
  	@# Otherwise, 'make silentoldconfig' would be invoked twice.
  	$(Q)touch include/config/auto.conf

  u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: include/config.h FORCE
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)

  -include include/autoconf.mk
  -include include/autoconf.mk.dep

  # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
  # is up-to-date. When we switch to a different board configuration, old CONFIG
  # macros are still remaining in include/config/auto.conf. Without the following
  # gimmick, wrong config.mk would be included leading nasty warnings/errors.

  ifneq ($(wildcard $(KCONFIG_CONFIG)),)
  ifneq ($(wildcard include/config/auto.conf),)
  autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
  						include/config/auto.conf)
  ifeq ($(autoconf_is_old),)

  include config.mk
  include arch/$(ARCH)/Makefile

  endif

  endif
  endif

  # These are set by the arch-specific config.mk. Make sure they are exported
  # so they can be used when building an EFI application.
  export EFI_LDS		# Filename of EFI link script in arch/$(ARCH)/lib
  export EFI_CRT0		# Filename of EFI CRT0 in arch/$(ARCH)/lib
  export EFI_RELOC	# Filename of EFU relocation code in arch/$(ARCH)/lib
  export CFLAGS_EFI	# Compiler flags to add when building EFI app
  export CFLAGS_NON_EFI	# Compiler flags to remove when building EFI app
  export EFI_TARGET	# binutils target if EFI is natively supported

  # 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.
  
  ifndef LDSCRIPT

  	#LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug

  	ifdef CONFIG_SYS_LDSCRIPT
  		# need to strip off double quotes

  		LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)

  	endif
  endif

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

  ifndef LDSCRIPT

  	ifeq ($(wildcard $(LDSCRIPT)),)

  		LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds

  	endif
  	ifeq ($(wildcard $(LDSCRIPT)),)

  		LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds

  	endif
  	ifeq ($(wildcard $(LDSCRIPT)),)

  		LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds

  	endif

  endif

  else

  # Dummy target needed, because used as prerequisite
  include/config/auto.conf: ;

  endif # $(dot-config)

  #
  # Xtensa linker script cannot be preprocessed with -ansi because of
  # preprocessor operations on strings that don't make C identifiers.
  #
  ifeq ($(CONFIG_XTENSA),)
  LDPPFLAGS	+= -ansi
  endif

  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  KBUILD_CFLAGS	+= -Os
  else
  KBUILD_CFLAGS	+= -O2
  endif

  KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)

  KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)

  
  KBUILD_CFLAGS	+= -g
  # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
  # option to the assembler.
  KBUILD_AFLAGS	+= -g
  
  # Report stack usage if supported

  ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
  	KBUILD_CFLAGS += -fstack-usage
  endif

  
  KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
  
  # turn jbsr into jsr for m68k
  ifeq ($(ARCH),m68k)
  ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
  KBUILD_AFLAGS += -Wa,-gstabs,-S
  endif
  endif

  # Prohibit date/time macros, which would make the build non-deterministic
  KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)

  include scripts/Makefile.extrawarn

  # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
  KBUILD_CPPFLAGS += $(KCPPFLAGS)
  KBUILD_AFLAGS += $(KAFLAGS)
  KBUILD_CFLAGS += $(KCFLAGS)

  # Use UBOOTINCLUDE when you must reference the include/ directory.
  # Needed to be compatible with the O= option

  UBOOTINCLUDE    := \
  		-Iinclude \
  		$(if $(KBUILD_SRC), -I$(srctree)/include) \

  		$(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
  			$(if $(CONFIG_HAS_THUMB2),, \
  				-I$(srctree)/arch/$(ARCH)/thumb1/include),) \

  		-I$(srctree)/arch/$(ARCH)/include \
  		-include $(srctree)/include/linux/kconfig.h

  
  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
  CHECKFLAGS     += $(NOSTDINC_FLAGS)
  
  # FIX ME

  cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
  							$(NOSTDINC_FLAGS)

  c_flags := $(KBUILD_CFLAGS) $(cpp_flags)

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

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

  libs-y += lib/
  libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/

  libs-$(CONFIG_OF_EMBED) += dts/

  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/mtd/
  libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
  libs-y += drivers/mtd/onenand/
  libs-$(CONFIG_CMD_UBI) += 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/domain/ \

  	drivers/power/fuel_gauge/ \
  	drivers/power/mfd/ \
  	drivers/power/pmic/ \

  	drivers/power/battery/ \
  	drivers/power/regulator/

  libs-y += drivers/spi/
  libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
  libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/

  libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/

  libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/

  libs-y += drivers/serial/

  libs-y += drivers/usb/cdns3/

  libs-y += drivers/usb/dwc3/

  libs-y += drivers/usb/common/

  libs-y += drivers/usb/emul/

  libs-y += drivers/usb/eth/
  libs-y += drivers/usb/gadget/

  libs-y += drivers/usb/gadget/udc/

  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 += cmd/

  libs-y += common/

  libs-y += env/

  libs-$(CONFIG_API) += api/
  libs-$(CONFIG_HAS_POST) += post/
  libs-y += test/

  libs-y += test/dm/

  libs-$(CONFIG_UT_ENV) += test/env/

  libs-$(CONFIG_UT_OVERLAY) += test/overlay/

  libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)

  
  libs-y := $(sort $(libs-y))

  u-boot-dirs	:= $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
  
  u-boot-alldirs	:= $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
  
  libs-y		:= $(patsubst %/, %/built-in.o, $(libs-y))
  
  u-boot-init := $(head-y)
  u-boot-main := $(libs-y)

  # Add GCC lib

  ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)

  PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a

  else

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

  endif
  PLATFORM_LIBS += $(PLATFORM_LIBGCC)
  export PLATFORM_LIBS

  export PLATFORM_LIBGCC

  # Special flags for CPP when processing the linker script.
  # Pass the version down so we can handle backwards compatibility
  # on the fly.
  LDPPFLAGS += \

  	-include $(srctree)/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')

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

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

  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)

  # 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).

  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 ' '); \

  	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 += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check

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

  ifeq ($(CONFIG_SPL_FSL_PBL),y)
  ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
  else

  ifneq ($(CONFIG_SECURE_BOOT), y)
  # For Secure Boot The Image needs to be signed and Header must also
  # be included. So The image has to be built explicitly

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

  endif

  endif

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

  ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy)
  ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
  else

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

  endif

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

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

  ifeq ($(CONFIG_SPL_FRAMEWORK),y)
  ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
  endif

  ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb

  ifneq ($(CONFIG_SPL_TARGET),)

  ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)

  endif

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

  ALL-$(CONFIG_EFI_APP) += u-boot-app.efi

  ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi

  ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)

  ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
  endif

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

  ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)

  ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin

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

  endif

  # Add optional build target if defined in board/cpu/soc headers
  ifneq ($(CONFIG_BUILD_TARGET),)
  ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
  endif

  ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
  ALL-y += init_sp_bss_offset_check
  endif

  LDFLAGS_u-boot += $(LDFLAGS_FINAL)

  
  # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
  LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)

  ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)

  LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
  endif

  # Normally we fill empty space with 0xff

  quiet_cmd_objcopy = OBJCOPY $@

  cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
  	$(OBJCOPYFLAGS_$(@F)) $< $@
  
  # Provide a version which does not do this, for use by EFI
  quiet_cmd_zobjcopy = OBJCOPY $@
  cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@

  quiet_cmd_efipayload = OBJCOPY $@
  cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@

  MKIMAGEOUTPUT ?= /dev/null

  quiet_cmd_mkimage = MKIMAGE $@

  cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \

  	$(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))

  quiet_cmd_mkfitimage = MKIMAGE $@
  cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \
  	$(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))

  quiet_cmd_cat = CAT     $@
  cmd_cat = cat $(filter-out $(PHONY), $^) > $@

  append = cat $(filter-out $< $(PHONY), $^) >> $@
  
  quiet_cmd_pad_cat = CAT     $@
  cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@

  cfg: u-boot.cfg

  quiet_cmd_cfgcheck = CFGCHK  $2
  cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
  		$(srctree)/scripts/config_whitelist.txt $(srctree)

  all:		$(ALL-y) cfg

  ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)

  	@echo "===================== WARNING ======================"
  	@echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
  	@echo "(possibly in a subsequent patch in your series)"
  	@echo "before sending patches to the mailing list."
  	@echo "===================================================="
  endif

  	@# Check that this build does not use CONFIG options that we do not
  	@# know about unless they are in Kconfig. All the existing CONFIG
  	@# options are whitelisted, so new ones should not be added.

  	$(call cmd,cfgcheck,u-boot.cfg)

  PHONY += dtbs

  dtbs: dts/dt.dtb
  	@:

  dts/dt.dtb: u-boot

  	$(Q)$(MAKE) $(build)=dts dtbs

  quiet_cmd_copy = COPY    $@
        cmd_copy = cp $< $@

  ifeq ($(CONFIG_MULTI_DTB_FIT),y)

  
  fit-dtb.blob: dts/dt.dtb FORCE
  	$(call if_changed,mkimage)
  
  MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
  	-a 0 -e 0 -E \
  	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
  
  u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob
  	$(call if_changed,cat)
  
  u-boot.bin: u-boot-fit-dtb.bin FORCE
  	$(call if_changed,copy)
  else ifeq ($(CONFIG_OF_SEPARATE),y)

  u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE

  	$(call if_changed,cat)

  u-boot.bin: u-boot-dtb.bin FORCE
  	$(call if_changed,copy)
  else
  u-boot.bin: u-boot-nodtb.bin FORCE
  	$(call if_changed,copy)
  endif

  %.imx: %.bin

  	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@

  %.vyb: %.imx
  	$(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
  
  quiet_cmd_copy = COPY    $@
        cmd_copy = cp $< $@

  u-boot.dtb: dts/dt.dtb
  	$(call cmd,copy)

  OBJCOPYFLAGS_u-boot.hex := -O ihex

  OBJCOPYFLAGS_u-boot.srec := -O srec

  u-boot.hex u-boot.srec: u-boot FORCE
  	$(call if_changed,objcopy)

  OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
  
  u-boot-elf.srec: u-boot.elf FORCE
  	$(call if_changed,objcopy)

  OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
  
  spl/u-boot-spl.srec: spl/u-boot-spl FORCE
  	$(call if_changed,objcopy)

  OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \

  		$(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec)

  binary_size_check: u-boot-nodtb.bin FORCE
  	@file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \

  	map_size=$(shell cat u-boot.map | \

  		awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \

  		| sed 's/0X//g' \

  		| bc); \

  	if [ "" != "$$map_size" ]; then \
  		if test $$map_size -ne $$file_size; then \

  			echo "u-boot.map shows a binary size of $$map_size" >&2 ; \

  			echo "  but u-boot-nodtb.bin shows $$file_size" >&2 ; \

  			exit 1; \
  		fi \
  	fi

  ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
  ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
  subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
  else
  subtract_sys_malloc_f_len = true
  endif
  # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
  # so low that the DTB could probably use 90%+ of the available space, for
  # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
  # safe for now and tweak this later if space becomes tight.
  # A rejected alternative would be to check that some absolute minimum stack
  # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
  # deliberately build-specific, to take account of build-to-build stack usage
  # differences due to different feature sets, there is no common absolute value
  # to check against.
  init_sp_bss_offset_check: u-boot.dtb FORCE
  	@dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
  	space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
  	$(subtract_sys_malloc_f_len) ; \
  	quarter_space=$$(($${space} / 4)) ; \
  	if [ $${dtb_size} -gt $${quarter_space} ]; then \
  		echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
  		echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
  		exit 1 ; \
  	fi
  endif

  u-boot-nodtb.bin: u-boot FORCE

  	$(call if_changed,objcopy)
  	$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
  	$(BOARD_SIZE_CHECK)

  u-boot.ldr:	u-boot

  		$(CREATE_LDR_ENV)

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

  		$(BOARD_SIZE_CHECK)

  # binman
  # ---------------------------------------------------------------------------
  quiet_cmd_binman = BINMAN  $@
  cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
  		-I . -I $(srctree)/board/$(BOARDDIR) $<

  OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
  
  OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec

  u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
  	$(call if_changed,objcopy)

  #
  # 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

  # Create a file containing the configuration options the image was built with
  quiet_cmd_cpp_cfg = CFG     $@
  cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \

  	-DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<

  # Boards with more complex image requirments can provide an .its source file
  # or a generator script
  ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
  U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
  else
  ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
  U_BOOT_ITS := u-boot.its
  $(U_BOOT_ITS): FORCE
  	$(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
  	$(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
  endif
  endif

  ifdef CONFIG_SPL_LOAD_FIT
  MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
  	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
  	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \

  	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))

  else

  MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
  	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
  	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"

  MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
  	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
  	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"

  u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
  CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log

  endif

  MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)

  MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
  	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)

  MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \

  	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
  	$(if $(KEYDIR),-k $(KEYDIR))

  MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
  		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage

  u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \

  		$(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE

  	$(call if_changed,mkimage)

  u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE
  	$(call if_changed,mkfitimage)

  	$(BOARD_SIZE_CHECK)

  u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE

  	$(call if_changed,mkimage)

  u-boot.sha1:	u-boot.bin
  		tools/ubsha1 u-boot.bin

  u-boot.dis:	u-boot

  		$(OBJDUMP) -d $< > $@

  ifdef CONFIG_TPL

  SPL_PAYLOAD := tpl/u-boot-with-tpl.bin

  else

  SPL_PAYLOAD := u-boot.bin

  endif

  OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
  				   --pad-to=$(CONFIG_SPL_PAD_TO)
  u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
  	$(call if_changed,pad_cat)

  MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
  
  lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
  	$(call if_changed,mkimage)
  
  OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)

  lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE

  	$(call if_changed,objcopy)
  
  OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)

  lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE

  	$(call if_changed,objcopy)

  lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE

  	$(call if_changed,cat)
  
  CLEAN_FILES += lpc32xx-*

  OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
  				   --pad-to=$(CONFIG_TPL_PAD_TO)
  tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
  	$(call if_changed,pad_cat)

  SPL: spl/u-boot-spl.bin FORCE

  	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@

  
  u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE

  	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@

  MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
  
  u-boot.ubl: u-boot-with-spl.bin FORCE
  	$(call if_changed,mkimage)

  MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
  	$(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
  	-T aisimage -e $(CONFIG_SPL_TEXT_BASE)
  spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
  	$(call if_changed,mkimage)

  OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)

  u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
  	$(call if_changed,pad_cat)

  u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
  	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb

  u-boot.sb: u-boot.bin spl/u-boot-spl.bin

  	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs 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

  MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
  	-a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
  spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
  	$(call if_changed,mkimage)
  
  OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
  			  --gap-fill=0xff
  u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
  	$(call if_changed,pad_cat)

  ifneq ($(CONFIG_ARCH_SOCFPGA),)
  quiet_cmd_socboot = SOCBOOT $@

  cmd_socboot = cat	spl/u-boot-spl.sfp spl/u-boot-spl.sfp	\
  			spl/u-boot-spl.sfp spl/u-boot-spl.sfp	\
  			u-boot.img > $@ || rm -f $@
  u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE

  	$(call if_changed,socboot)
  endif

  # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
  # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in

  # the middle. This is handled by binman based on an image description in the
  # board's device tree.

  ifneq ($(CONFIG_X86_RESET_VECTOR),)
  rom: u-boot.rom FORCE

  refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
  	$(call if_changed,copy)
  
  quiet_cmd_ldr = LD      $@
  cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
  	       $(filter-out FORCE,$^) -o $@

  u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
  		$(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \

  		$(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE

  	$(call if_changed,binman)

  
  OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
  u-boot-x86-16bit.bin: u-boot FORCE
  	$(call if_changed,objcopy)
  endif

  ifneq ($(CONFIG_ARCH_SUNXI),)

  u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE

  	$(call if_changed,binman)

  endif

  ifneq ($(CONFIG_TEGRA),)

  ifneq ($(CONFIG_BINMAN),)
  u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin: \
  		spl/u-boot-spl u-boot.bin FORCE
  	$(call if_changed,binman)
  else

  OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)

  u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE

  	$(call if_changed,pad_cat)

  OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)

  u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE

  	$(call if_changed,pad_cat)

  
  u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
  	$(call if_changed,copy)

  endif  # binman

  endif

  OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
  u-boot-app.efi: u-boot FORCE
  	$(call if_changed,zobjcopy)

  u-boot.bin.o: u-boot.bin FORCE

  	$(call if_changed,efipayload)
  
  u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
  	$(call if_changed_dep,cpp_lds)
  
  # Rule to link the EFI payload which contains a stub and a U-Boot binary
  quiet_cmd_u-boot_payload ?= LD      $@
        cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \

        -T u-boot-payload.lds arch/x86/cpu/call32.o \

        lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \

        $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))

  u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE

  	$(call if_changed,u-boot_payload)
  
  OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
  u-boot-payload.efi: u-boot-payload FORCE
  	$(call if_changed,zobjcopy)

  u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
  	$(call if_changed,cat)

  #Add a target to create boot binary having SPL binary in PBI format
  #concatenated with u-boot binary. It is need by PowerPC SoC having
  #internal SRAM <= 512KB.
  MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \

  		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
  		-A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)

  
  spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
  	$(call if_changed,mkimage)

  ifeq ($(ARCH),arm)
  UBOOT_BINLOAD := u-boot.img
  else
  UBOOT_BINLOAD := u-boot.bin
  endif

  OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
  			  --gap-fill=0xff

  u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE

  	$(call if_changed,pad_cat)

  # 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.

  
  OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
  	--pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
  u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
  	$(call if_changed,pad_cat)

  # Create a new ELF from a raw binary file.

  ifndef PLATFORM_ELFENTRY
    PLATFORM_ELFENTRY = "_start"
  endif

  quiet_cmd_u-boot-elf ?= LD      $@
  	cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
  	--defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
  	-Ttext=$(CONFIG_SYS_TEXT_BASE)

  u-boot.elf: u-boot.bin

  	$(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
  	$(call if_changed,u-boot-elf)

  ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)

  # Rule to link u-boot
  # May be overridden by arch/$(ARCH)/config.mk
  quiet_cmd_u-boot__ ?= LD      $@
        cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
        -T u-boot.lds $(u-boot-init)                             \
        --start-group $(u-boot-main) --end-group                 \

        $(PLATFORM_LIBS) -Map u-boot.map;                        \
        $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)

  quiet_cmd_smap = GEN     common/system_map.o
  cmd_smap = \

  	smap=`$(call SYSTEM_MAP,u-boot) | \
  		awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
  	$(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
  		-c $(srctree)/common/system_map.c -o common/system_map.o

  u-boot:	$(u-boot-init) $(u-boot-main) u-boot.lds FORCE

  	+$(call if_changed,u-boot__)

  ifeq ($(CONFIG_KALLSYMS),y)
  	$(call cmd,smap)

  	$(call cmd,u-boot__) common/system_map.o

  endif

  ifeq ($(CONFIG_RISCV),y)
  	@tools/prelink-riscv $@ 0
  endif

  quiet_cmd_sym ?= SYM     $@
        cmd_sym ?= $(OBJDUMP) -t $< > $@
  u-boot.sym: u-boot FORCE
  	$(call if_changed,sym)

  # The actual objects are generated when descending,

  # make sure no implicit rule kicks in
  $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;

  # Handle descending into subdirectories listed in $(vmlinux-dirs)
  # Preset locale variables to speed up the build process. Limit locale
  # tweaks to this spot to avoid wrong language settings when running
  # make menuconfig etc.
  # Error messages still appears in the original language

  PHONY += $(u-boot-dirs)

  $(u-boot-dirs): prepare scripts

  	$(Q)$(MAKE) $(build)=$@

  tools: prepare

  # The "tools" are needed early
  $(filter-out tools, $(u-boot-dirs)): tools
  # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
  # is "yes"), so compile examples after U-Boot is compiled.
  examples: $(filter-out examples, $(u-boot-dirs))

  define filechk_uboot.release
  	echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
  endef
  
  # Store (new) UBOOTRELEASE string in include/config/uboot.release

  include/config/uboot.release: include/config/auto.conf FORCE

  	$(call filechk,uboot.release)

  # Things we need to do before we recursively start building the kernel
  # or the modules are listed in "prepare".
  # A multi level approach is used. prepareN is processed before prepareN-1.
  # archprepare is used in arch Makefiles and when processed asm symlink,
  # version.h and scripts_basic is processed / created.
  
  # Listed in dependency order
  PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
  
  # prepare3 is used to check if we are building in a separate output directory,
  # and if so do:
  # 1) Check that make has not been executed in the kernel src $(srctree)

  prepare3: include/config/uboot.release

  ifneq ($(KBUILD_SRC),)

  	@$(kecho) '  Using $(srctree) as source for U-Boot'
  	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \

  		echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
  		echo >&2 "  in the '$(srctree)' directory.";\
  		/bin/false; \
  	fi;

  endif

  # prepare2 creates a makefile if using a separate output directory
  prepare2: prepare3 outputmakefile

  prepare1: prepare2 $(version_h) $(timestamp_h) \
                     include/config/auto.conf

  ifeq ($(wildcard $(LDSCRIPT)),)
  	@echo >&2 "  Could not find linker script."
  	@/bin/false
  endif

  archprepare: prepare1 scripts_basic

  prepare0: archprepare FORCE
  	$(Q)$(MAKE) $(build)=.

  # All the preparing..
  prepare: prepare0

  # Generate some files
  # ---------------------------------------------------------------------------
  
  define filechk_version.h
  	(echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
  	echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \

  	echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
  	echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )

  endef

  # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
  # The BSD date on the other hand behaves different and would produce errors
  # with the misused '-d' switch.  Respect that and search a working date with
  # well known pre- and suffixes for the GNU variant of date.

  define filechk_timestamp.h

  	(if test -n "$${SOURCE_DATE_EPOCH}"; then \
  		SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \

  		DATE=""; \
  		for date in gdate date.gnu date; do \
  			$${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
  		done; \
  		if test -n "$${DATE}"; then \
  			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
  			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
  			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \

  			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \

  			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \

  		else \
  			return 42; \
  		fi; \

  	else \
  		LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
  		LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
  		LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \

  		LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \

  		LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \

  	fi)

  endef

  $(version_h): include/config/uboot.release FORCE

  	$(call filechk,version.h)
  
  $(timestamp_h): $(srctree)/Makefile FORCE
  	$(call filechk,timestamp.h)

  # ---------------------------------------------------------------------------

  quiet_cmd_cpp_lds = LDS     $@

  cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \

  		-D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<

  u-boot.lds: $(LDSCRIPT) prepare FORCE

  	$(call if_changed_dep,cpp_lds)

  spl/u-boot-spl.bin: spl/u-boot-spl
  	@:

  spl/u-boot-spl: tools prepare \

  		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
  		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)

  	$(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all

  spl/sunxi-spl.bin: spl/u-boot-spl
  	@:

  spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
  	@:

  spl/u-boot-spl.sfp: spl/u-boot-spl

  	@:

  spl/boot.bin: spl/u-boot-spl
  	@:

  tpl/u-boot-tpl.bin: tools prepare \

  		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)

  	$(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all

  TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)

  FIND := find
  FINDFLAGS := -L

  tags ctags:

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

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

  		ln -s ctags tags

  
  etags:

  		etags -a -o 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

  System.map:	u-boot

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

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

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

  checkarmreloc: 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

  envtools: scripts_basic $(version_h) $(timestamp_h)

  	$(Q)$(MAKE) $(build)=tools/env

  tools-only: scripts_basic $(version_h) $(timestamp_h)
  	$(Q)$(MAKE) $(build)=tools

  tools-all: export HOST_TOOLS_ALL=y

  tools-all: envtools tools ;

  cross_tools: export CROSS_BUILD_TOOLS=y
  cross_tools: tools ;

  .PHONY : CHANGELOG
  CHANGELOG:

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

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

  ###
  # Cleaning is done on three levels.
  # make clean     Delete most generated files
  #                Leave enough to build external modules
  # make mrproper  Delete the current configuration, and all generated files
  # make distclean Remove editor backup files, patch leftover files and the like
  
  # Directories & files removed with 'make clean'

  CLEAN_DIRS  += $(MODVERDIR) \
  	       $(foreach d, spl tpl, $(patsubst %,$d/%, \

  			$(filter-out include, $(shell ls -1 $d 2>/dev/null))))

  CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \

  	       boot* u-boot* MLO* SPL System.map fit-dtb.blob

  
  # Directories & files removed with 'make mrproper'

  MRPROPER_DIRS  += include/config include/generated spl tpl \

  		  .tmp_objdiff

  MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \

  		  ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS

  
  # clean - Delete most, but leave enough to build external modules
  #
  clean: rm-dirs  := $(CLEAN_DIRS)
  clean: rm-files := $(CLEAN_FILES)

  clean-dirs	:= $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))

  
  clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
  
  PHONY += $(clean-dirs) clean archclean
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  
  # TODO: Do not use *.cfgtmp
  clean: $(clean-dirs)
  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)
  	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
  		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  		-o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
  		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  		-o -name '*.symtypes' -o -name 'modules.order' \
  		-o -name modules.builtin -o -name '.tmp_*.o.*' \

  		-o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \

  		-o -name '*.gcno' \) -type f -print | xargs rm -f

  # mrproper - Delete all generated files, including .config
  #
  mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
  mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
  mrproper-dirs      := $(addprefix _mrproper_,scripts)

  PHONY += $(mrproper-dirs) mrproper archmrproper
  $(mrproper-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)

  mrproper: clean $(mrproper-dirs)

  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)

  	@rm -f arch/*/include/asm/arch

  
  # distclean
  #
  PHONY += distclean

  
  distclean: mrproper

  	@find $(srctree) $(RCS_FIND_IGNORE) \
  		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
  		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \

  		-o -name '.*.rej' -o -name '*%' -o -name 'core' \
  		-o -name '*.pyc' \) \

  		-type f -print | xargs rm -f

  	@rm -f boards.cfg

  
  backup:

  	F=`basename $(srctree)` ; cd .. ; \

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

  help:
  	@echo  'Cleaning targets:'

  	@echo  '  clean		  - Remove most generated files but keep the config'

  	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
  	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
  	@echo  ''

  	@echo  'Configuration targets:'
  	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
  	@echo  ''

  	@echo  'Other generic targets:'
  	@echo  '  all		  - Build all necessary images depending on configuration'

  	@echo  '  tests		  - Build U-Boot for sandbox and run tests'

  	@echo  '* u-boot	  - Build the bare u-boot'

  	@echo  '  dir/            - Build all files in dir and below'
  	@echo  '  dir/file.[oisS] - Build specified target only'
  	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
  	@echo  '                    (requires a recent binutils and recent build (System.map))'

  	@echo  '  tags/ctags	  - Generate ctags file for editors'
  	@echo  '  etags		  - Generate etags file for editors'

  	@echo  '  cscope	  - Generate cscope index'

  	@echo  '  ubootrelease	  - Output the release version string (use with make -s)'
  	@echo  '  ubootversion	  - Output the version stored in Makefile (use with make -s)'