#

  # (C) Copyright 2000-2013

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

  # SPDX-License-Identifier:	GPL-2.0+

  #

  VERSION = 2014

  PATCHLEVEL = 10

  SUBLEVEL =

  EXTRAVERSION = -rc3

  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.
  
  # Do not:
  # o  use make's built-in rules and variables
  #    (this increases performance and avoids hard-to-debug behaviour);
  # o  print "Entering directory ...";
  MAKEFLAGS += -rR --no-print-directory
  
  # Avoid funny character set dependencies
  unexport LC_ALL
  LC_COLLATE=C
  LC_NUMERIC=C
  export LC_COLLATE LC_NUMERIC
  
  # 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.
  
  # 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
  
  # 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

  # 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
  	$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
  	KBUILD_SRC=$(CURDIR) \
  	KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -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),)

  # 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

  
  srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
  objtree		:= $(CURDIR)
  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

  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")
  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
  
  # 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.

  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

  # Look for make include files relative to root of kernel src
  MAKEFLAGS += --include-dir=$(srctree)

  # We need some generic definitions (do not try to remake the file).
  $(srctree)/scripts/Kbuild.include: ;
  include $(srctree)/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		= 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_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 DTC CHECK CHECKFLAGS

  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 tools-only

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

  	+$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@

  
  %config: scripts_basic outputmakefile FORCE

  	+$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@

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

  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

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

  include $(srctree)/config.mk

  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.
  
  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)

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

  
  ifdef BUILD_TAG
  KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
  endif
  
  KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
  
  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)

  ifneq ($(CONFIG_SYS_TEXT_BASE),)
  KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
  endif
  
  export CONFIG_SYS_TEXT_BASE

  include $(srctree)/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) \

  		-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)

  head-y := $(CPUDIR)/start.o
  head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
  head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o

  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-y += $(CPUDIR)/

  ifdef SOC

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

  endif

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

  libs-y += test/dm/

  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 += $(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

  ifdef CONFIG_USE_PRIVATE_LIBGCC
  ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)

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

  else

  PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc

  endif
  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)
  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 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

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

  endif

  ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
  ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
  ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin

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

  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

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

  ifneq ($(CONFIG_TEGRA),)

  ifeq ($(CONFIG_SPL),y)

  ifeq ($(CONFIG_OF_SEPARATE),y)

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

  else

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

  endif
  endif

  endif

  LDFLAGS_u-boot += $(LDFLAGS_FINAL)

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

  quiet_cmd_objcopy = OBJCOPY $@
  cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@

  quiet_cmd_mkimage = MKIMAGE $@

  cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
  	$(if $(KBUILD_VERBOSE:1=), >/dev/null)

  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 $@

  all:		$(ALL-y)

  PHONY += dtbs
  dtbs dts/dt.dtb: checkdtc u-boot
  	$(Q)$(MAKE) $(build)=dts dtbs

  u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
  	$(call if_changed,cat)

  %.imx: %.bin
  	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@

  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.bin := -O binary

  binary_size_check: u-boot.bin FORCE

  	@file_size=$(shell wc -c u-boot.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.bin shows $$file_size" >&2 ; \
  			exit 1; \
  		fi \
  	fi

  u-boot.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_BFIN_CPU) -c $@ $< $(LDR_FLAGS)

  		$(BOARD_SIZE_CHECK)

  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

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

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

  u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE

  	$(call if_changed,mkimage)

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

  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/imx-common $@
  
  u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE

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

  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)

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

  MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
  	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
  u-boot-nand.gph: u-boot.bin FORCE
  	$(call if_changed,mkimage)
  	@dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@

  ifneq ($(CONFIG_SUNXI),)
  OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
  				   --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
  u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
  	$(call if_changed,pad_cat)
  endif

  ifneq ($(CONFIG_TEGRA),)

  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.bin FORCE
  	$(call if_changed,pad_cat)

  
  ifeq ($(CONFIG_OF_SEPARATE),y)

  u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
  	$(call if_changed,cat)

  endif

  endif

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

  u-boot.elf: u-boot.bin

  	@$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \

  		$< u-boot-elf.o
  	@$(LD) u-boot-elf.o -o $@ \

  		--defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
  		-Ttext=$(CONFIG_SYS_TEXT_BASE)

  # 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

  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
  	$(call if_changed,u-boot__)
  ifeq ($(CONFIG_KALLSYMS),y)
  	$(call cmd,smap)

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

  endif

  # 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 ($(__HAVE_ARCH_GENERIC_BOARD),)
  ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
  	@echo >&2 "  Your architecture does not support generic board."
  	@echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
  	@/bin/false
  endif
  endif

  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 \"$$($(CC) --version | head -n 1)\"; \
  	echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
  endef
  
  define filechk_timestamp.h
  	(LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
  	LC_ALL=C date +'#define U_BOOT_TIME "%T"')
  endef

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

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

  # ---------------------------------------------------------------------------
  
  PHONY += depend dep
  depend dep:
  	@echo '*** Warning: make $@ is unnecessary now.'
  
  # ---------------------------------------------------------------------------

  quiet_cmd_cpp_lds = LDS     $@

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

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

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

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

  	$(Q)$(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`

  
  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

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

  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

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

  # 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

  env: scripts_basic

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

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

  tools-all: export HOST_TOOLS_ALL=y

  tools-all: env 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*$$//' > $@

  include/license.h: tools/bin2header COPYING

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

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

  ###
  # 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)

  CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h

  
  # Directories & files removed with 'make clobber'

  CLOBBER_DIRS  += $(foreach d, spl tpl, $(patsubst %,$d/%, \
  			$(filter-out include, $(shell ls -1 $d 2>/dev/null))))

  CLOBBER_FILES += u-boot* MLO* SPL System.map

  
  # 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 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) \
  		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  		-o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
  		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  		-o -name '*.symtypes' -o -name 'modules.order' \
  		-o -name modules.builtin -o -name '.tmp_*.o.*' \
  		-o -name '*.gcno' \) -type f -print | xargs rm -f

  
  # clobber
  #
  clobber: rm-dirs  := $(CLOBBER_DIRS)
  clobber: rm-files := $(CLOBBER_FILES)

  PHONY += clobber

  clobber: clean

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

  # 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: clobber $(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 and'
  	@echo  '                    necessities for testing u-boot'
  	@echo  '  clobber	  - 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  '  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'
  	@echo  '  ubootversion	  - Output the version stored in Makefile'
  	@echo  ''
  	@echo  'Static analysers'
  	@echo  '  checkstack      - Generate a list of stack hogs'
  	@echo  ''
  	@echo  'Documentation targets:'
  	@$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
  	@echo  ''
  	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
  	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
  	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
  	@echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
  	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
  	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
  	@echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
  	@echo  '		1: warnings which may be relevant and do not occur too often'
  	@echo  '		2: warnings which occur quite often but may still be relevant'
  	@echo  '		3: more obscure warnings, can most likely be ignored'
  	@echo  '		Multiple levels can be combined with W=12 or W=123'
  	@echo  ''
  	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
  	@echo  'For further info see the ./README file'

  
  # Documentation targets
  # ---------------------------------------------------------------------------
  %docs: scripts_basic FORCE
  	$(Q)$(MAKE) $(build)=scripts build_docproc
  	$(Q)$(MAKE) $(build)=doc/DocBook $@

  # Dummies...
  PHONY += prepare scripts
  prepare: ;
  scripts: ;

  endif #ifeq ($(config-targets),1)
  endif #ifeq ($(mixed-targets),1)

  PHONY += checkstack ubootrelease ubootversion
  
  checkstack:
  	$(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
  	$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
  
  ubootrelease:
  	@echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
  
  ubootversion:
  	@echo $(UBOOTVERSION)

  # Single targets
  # ---------------------------------------------------------------------------
  # Single targets are compatible with:
  # - build with mixed source and output
  # - build with separate output dir 'make O=...'
  # - external modules
  #
  #  target-dir => where to store outputfile
  #  build-dir  => directory in kernel source tree to use
  
  ifeq ($(KBUILD_EXTMOD),)
          build-dir  = $(patsubst %/,%,$(dir $@))
          target-dir = $(dir $@)
  else
          zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
          build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
          target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
  endif
  
  %.s: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  %.i: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  %.o: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  %.lst: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  %.s: %.S prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  %.o: %.S prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  %.symtypes: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  
  # Modules
  /: prepare scripts FORCE
  	$(cmd_crmodverdir)
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  	$(build)=$(build-dir)
  %/: prepare scripts FORCE
  	$(cmd_crmodverdir)
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  	$(build)=$(build-dir)
  %.ko: prepare scripts FORCE
  	$(cmd_crmodverdir)
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
  	$(build)=$(build-dir) $(@:.ko=.o)
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

  # FIXME Should go into a make.lib or something

  # ===========================================================================

  quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
        cmd_rmdirs = rm -rf $(rm-dirs)
  
  quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
        cmd_rmfiles = rm -f $(rm-files)

  # read all saved command lines
  
  targets := $(wildcard $(sort $(targets)))
  cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  
  ifneq ($(cmd_files),)
    $(cmd_files): ;	# Do not try to update included dependency files
    include $(cmd_files)
  endif

  # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
  # Usage:
  # $(Q)$(MAKE) $(clean)=dir
  clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj

  endif	# skip-makefile
  
  PHONY += FORCE
  FORCE:
  
  # Declare the contents of the .PHONY variable as phony.  We keep that
  # information in a variable so we can use it in if_changed and friends.
  .PHONY: $(PHONY)