X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=Makefile;h=ee16d8cfc7bb4f3b8cd7f4a15ce3aef2d7aee443;hb=d57d60cf24e46aab144511d110dee7d068da6e66;hp=7af404a80d9adaa46e790b16dfb89150001da0c6;hpb=47f1571115d92164afe309383ae7989e7076394c;p=platform%2Fkernel%2Fu-boot.git

diff --git a/Makefile b/Makefile
index 7af404a..ee16d8c 100644
--- a/Makefile
+++ b/Makefile
@@ -6,9 +6,9 @@
 #
 
 VERSION = 2014
-PATCHLEVEL = 01
+PATCHLEVEL = 04
 SUBLEVEL =
-EXTRAVERSION =
+EXTRAVERSION = -rc1
 NAME =
 
 # *DOCUMENTATION*
@@ -180,9 +180,6 @@ unexport CDPATH
 
 #########################################################################
 
-TIMESTAMP_FILE = include/generated/timestamp_autogenerated.h
-VERSION_FILE = include/generated/version_autogenerated.h
-
 HOSTARCH := $(shell uname -m | \
 	sed -e s/i.86/x86/ \
 	    -e s/sun4u/sparc64/ \
@@ -203,34 +200,6 @@ VENDOR=
 
 #########################################################################
 
-# The "tools" are needed early, so put this first
-# Don't include stuff already done in $(LIBS)
-# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
-# is "yes"), so compile examples after U-Boot is compiled.
-SUBDIR_TOOLS = tools
-SUBDIRS = $(SUBDIR_TOOLS)
-
-.PHONY : $(SUBDIRS) $(VERSION_FILE) $(TIMESTAMP_FILE)
-
-ifeq (include/config.mk,$(wildcard include/config.mk))
-
-# Include autoconf.mk before config.mk so that the config options are available
-# to all top level build files.  We need the dummy all: target to prevent the
-# dependency target in autoconf.mk.dep from being the default.
-all:
-sinclude include/autoconf.mk.dep
-sinclude include/autoconf.mk
-
-SUBDIR_EXAMPLES-y := examples/standalone
-SUBDIR_EXAMPLES-$(CONFIG_API) += examples/api
-ifndef CONFIG_SANDBOX
-SUBDIRS += $(SUBDIR_EXAMPLES-y)
-endif
-
-# load ARCH, BOARD, and CPU configuration
-include include/config.mk
-export	ARCH CPU BOARD VENDOR SOC
-
 # set default to nothing for native builds
 ifeq ($(HOSTARCH),$(ARCH))
 CROSS_COMPILE ?=
@@ -377,15 +346,6 @@ CHECK		= sparse
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 		  -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 
-# Use UBOOTINCLUDE when you must reference the include/ directory.
-# Needed to be compatible with the O= option
-UBOOTINCLUDE    :=
-ifneq ($(OBJTREE),$(SRCTREE))
-UBOOTINCLUDE	+= -I$(OBJTREE)/include
-endif
-UBOOTINCLUDE	+= -I$(srctree)/include \
-		-I$(srctree)/arch/$(ARCH)/include
-
 KBUILD_CPPFLAGS := -D__KERNEL__
 
 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
@@ -393,15 +353,18 @@ KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 		   -fno-builtin -ffreestanding
 KBUILD_AFLAGS   := -D__ASSEMBLY__
 
-U_BOOT_VERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
+# 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 U_BOOT_VERSION
+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
 export DTC CHECK CHECKFLAGS
 
-export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE
+export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
 export KBUILD_CFLAGS KBUILD_AFLAGS
 
 # When compiling out-of-tree modules, put MODVERDIR in the module
@@ -428,77 +391,109 @@ scripts_basic:
 # 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
 
-KBUILD_CFLAGS += -Os #-fomit-frame-pointer
+# 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).
 
-ifdef BUILD_TAG
-KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
+version_h := include/generated/version_autogenerated.h
+timestamp_h := include/generated/timestamp_autogenerated.h
+
+no-dot-config-targets := clean clobber mrproper distclean \
+			 help %docs check% coccicheck \
+			 ubootversion backup
+
+config-targets := 0
+mixed-targets  := 0
+dot-config     := 1
+
+ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
+	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
+		dot-config := 0
+	endif
 endif
 
-KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
+ifeq ($(KBUILD_EXTMOD),)
+        ifneq ($(filter config %config,$(MAKECMDGOALS)),)
+                config-targets := 1
+                ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
+                        mixed-targets := 1
+                endif
+        endif
+endif
 
-KBUILD_CFLAGS	+= -g
-# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
-# option to the assembler.
-KBUILD_AFLAGS	+= -g
+ifeq ($(mixed-targets),1)
+# ===========================================================================
+# We're called with mixed targets (*config and build targets).
+# Handle them one by one.
 
-NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
-CHECKFLAGS     += $(NOSTDINC_FLAGS)
+PHONY += $(MAKECMDGOALS) build-one-by-one
 
-# Report stack usage if supported
-KBUILD_CFLAGS += $(call cc-option,-fstack-usage)
+$(MAKECMDGOALS): build-one-by-one
+	@:
 
-KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
+build-one-by-one:
+	$(Q)set -e; \
+	for i in $(MAKECMDGOALS); do \
+		$(MAKE) -f $(srctree)/Makefile $$i; \
+	done
 
-# turn jbsr into jsr for m68k
-ifeq ($(ARCH),m68k)
-ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
-KBUILD_AFLAGS += -Wa,-gstabs,-S
-endif
-endif
+else
+ifeq ($(config-targets),1)
+# ===========================================================================
+# *config targets only - make sure prerequisites are updated, and descend
+# in scripts/kconfig to make the *config target
 
-# load other configuration
-include $(TOPDIR)/config.mk
+# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
+# KBUILD_DEFCONFIG may point out an alternative default configuration
+# used for 'make defconfig'
 
-ifneq ($(CONFIG_SYS_TEXT_BASE),)
-KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
-endif
+%_config:: outputmakefile
+	@$(MKCONFIG) -A $(@:_config=)
 
-export CONFIG_SYS_TEXT_BASE
+else
+# ===========================================================================
+# Build targets only - this includes vmlinux, arch specific targets, clean
+# targets and others. In general all targets except *config targets.
 
-LDFLAGS_u-boot += -T u-boot.lds $(LDFLAGS_FINAL)
-ifneq ($(CONFIG_SYS_TEXT_BASE),)
-LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
-endif
+# load ARCH, BOARD, and CPU configuration
+-include include/config.mk
 
-# Targets which don't build the source code
-NON_BUILD_TARGETS = backup clean clobber distclean mrproper tidy unconfig %_config
+ifeq ($(dot-config),1)
+# Read in config
+-include include/autoconf.mk
+-include include/autoconf.mk.dep
 
-# Only do the generic board check when actually building, not configuring
-ifeq ($(filter $(NON_BUILD_TARGETS),$(MAKECMDGOALS)),)
-ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
-ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
-CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \
-Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
-endif
-endif
-endif
+# load other configuration
+include $(srctree)/config.mk
 
-# FIX ME
-cpp_flags := $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
-c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
+ifeq ($(wildcard include/config.mk),)
+$(error "System not configured - see README")
+endif
 
 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 # that (or fail if absent).  Otherwise, search for a linker script in a
 # standard location.
 
-LDSCRIPT_MAKEFILE_DIR = $(dir $(LDSCRIPT))
-
 ifndef LDSCRIPT
 	#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
 	ifdef CONFIG_SYS_LDSCRIPT
 		# need to strip off double quotes
-		LDSCRIPT := $(CONFIG_SYS_LDSCRIPT:"%"=%)
+		LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 	endif
 endif
 
@@ -518,14 +513,64 @@ ifndef LDSCRIPT
 	endif
 	ifeq ($(wildcard $(LDSCRIPT)),)
 		LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
-		# We don't expect a Makefile here
-		LDSCRIPT_MAKEFILE_DIR =
-	endif
-	ifeq ($(wildcard $(LDSCRIPT)),)
-$(error could not find linker script)
 	endif
 endif
 
+else
+
+
+endif # $(dot-config)
+
+KBUILD_CFLAGS += -Os #-fomit-frame-pointer
+
+ifdef BUILD_TAG
+KBUILD_CFLAGS += -DBUILD_TAG='"$(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 $(CC) --version)),3.4)
+KBUILD_AFLAGS += -Wa,-gstabs,-S
+endif
+endif
+
+ifneq ($(CONFIG_SYS_TEXT_BASE),)
+KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
+endif
+
+export CONFIG_SYS_TEXT_BASE
+
+# Use UBOOTINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+UBOOTINCLUDE    :=
+ifneq ($(OBJTREE),$(SRCTREE))
+UBOOTINCLUDE	+= -I$(OBJTREE)/include
+endif
+UBOOTINCLUDE	+= -I$(srctree)/include \
+		-I$(srctree)/arch/$(ARCH)/include
+
+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)
 
@@ -533,77 +578,85 @@ head-y := $(CPUDIR)/start.o
 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
 
-OBJS := $(head-y)
-
 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 += $(CPUDIR)/
+libs-y += lib/
+libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
+libs-y += $(CPUDIR)/
 ifdef SOC
-LIBS-y += $(CPUDIR)/$(SOC)/
+libs-y += $(CPUDIR)/$(SOC)/
 endif
-LIBS-$(CONFIG_IXP4XX_NPE) += drivers/net/npe/
-LIBS-$(CONFIG_OF_EMBED) += dts/
-LIBS-y += arch/$(ARCH)/lib/
-LIBS-y += fs/
-LIBS-y += net/
-LIBS-y += disk/
-LIBS-y += drivers/
-LIBS-y += drivers/dma/
-LIBS-y += drivers/gpio/
-LIBS-y += drivers/i2c/
-LIBS-y += drivers/input/
-LIBS-y += drivers/mmc/
-LIBS-y += drivers/mtd/
-LIBS-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
-LIBS-y += drivers/mtd/onenand/
-LIBS-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
-LIBS-y += drivers/mtd/spi/
-LIBS-y += drivers/net/
-LIBS-y += drivers/net/phy/
-LIBS-y += drivers/pci/
-LIBS-y += drivers/power/ \
+libs-$(CONFIG_OF_EMBED) += dts/
+libs-y += arch/$(ARCH)/lib/
+libs-y += fs/
+libs-y += net/
+libs-y += disk/
+libs-y += drivers/
+libs-$(CONFIG_DM) += drivers/core/
+libs-y += drivers/dma/
+libs-y += drivers/gpio/
+libs-y += drivers/i2c/
+libs-y += drivers/input/
+libs-y += drivers/mmc/
+libs-y += drivers/mtd/
+libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
+libs-y += drivers/mtd/onenand/
+libs-$(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 += 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/
+libs-$(CONFIG_DM_DEMO) += drivers/demo/
 
 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
-LIBS-y += arch/$(ARCH)/imx-common/
+libs-y += arch/$(ARCH)/imx-common/
 endif
 
-LIBS-$(CONFIG_ARM) += arch/arm/cpu/
-LIBS-$(CONFIG_PPC) += arch/powerpc/cpu/
+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
 
-LIBS-y += board/$(BOARDDIR)/
+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)
 
-LIBS-y := $(patsubst %/, %/built-in.o, $(LIBS-y))
-LIBS := $(sort $(LIBS-y))
-.PHONY : $(LIBS)
 
 # Add GCC lib
-ifdef USE_PRIVATE_LIBGCC
-ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
-PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/lib.a
+ifdef CONFIG_USE_PRIVATE_LIBGCC
+ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
+PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 else
-PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
+PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
 endif
 else
 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
@@ -659,6 +712,7 @@ ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
+ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 ifneq ($(CONFIG_SPL_TARGET),)
 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 endif
@@ -675,36 +729,66 @@ endif
 endif
 endif
 
-all:		$(ALL-y) $(SUBDIR_EXAMPLES-y)
+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)) $< $@
 
-u-boot.dtb:	checkdtc u-boot
-		$(MAKE) $(build)=dts binary
-		mv dts/dt.dtb $@
+quiet_cmd_mkimage = UIMAGE  $@
+cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
+	$(if $(KBUILD_VERBOSE:1=), >/dev/null)
 
-u-boot-dtb.bin:	u-boot.bin u-boot.dtb
-		cat $^ >$@
+quiet_cmd_cat = CAT     $@
+cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 
-u-boot.hex:	u-boot
-		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@
+append = cat $(filter-out $< $(PHONY), $^) >> $@
 
-u-boot.srec:	u-boot
-		$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@
+quiet_cmd_pad_cat = CAT     $@
+cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 
-u-boot.bin:	u-boot
-		$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
-		$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
-		$(BOARD_SIZE_CHECK)
+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)
+
+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
+
+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)
 
-u-boot.ldr.hex:	u-boot.ldr
-		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@ -I binary
+OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
+
+OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 
-u-boot.ldr.srec:	u-boot.ldr
-		$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@ -I binary
+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
@@ -714,25 +798,21 @@ ifndef CONFIG_SYS_UBOOT_START
 CONFIG_SYS_UBOOT_START := 0
 endif
 
-u-boot.img:	u-boot.bin
-		tools/mkimage -A $(ARCH) -T firmware -C none \
-		-O u-boot -a $(CONFIG_SYS_TEXT_BASE) \
-		-e $(CONFIG_SYS_UBOOT_START) \
-		-n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' $(VERSION_FILE) | \
-			sed -e 's/"[	 ]*$$/ for $(BOARD) board"/') \
-		-d $< $@
+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"
 
-u-boot.imx: u-boot.bin depend
-		$(MAKE) $(build)=arch/arm/imx-common $(objtree)/u-boot.imx
+MKIMAGEFLAGS_u-boot.kwb = -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
+		-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 
-u-boot.kwb:       u-boot.bin
-		tools/mkimage -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
-		-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
+MKIMAGEFLAGS_u-boot.pbl = -n $(CONFIG_SYS_FSL_PBL_RCW) \
+		-R $(CONFIG_SYS_FSL_PBL_PBI) -T pblimage
 
-u-boot.pbl:	u-boot.bin
-		tools/mkimage -n $(CONFIG_SYS_FSL_PBL_RCW) \
-		-R $(CONFIG_SYS_FSL_PBL_PBI) -T pblimage \
-		-d $< $@
+u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
+	$(call if_changed,mkimage)
+
+u-boot.imx: u-boot.bin
+	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 
 u-boot.sha1:	u-boot.bin
 		tools/ubsha1 u-boot.bin
@@ -740,52 +820,45 @@ u-boot.sha1:	u-boot.bin
 u-boot.dis:	u-boot
 		$(OBJDUMP) -d $< > $@
 
-# $@ is output, $(1) and $(2) are inputs, $(3) is padded intermediate,
-# $(4) is pad-to
-SPL_PAD_APPEND = \
-		$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(4) -I binary -O binary \
-		$(1) $(3); \
-		cat $(3) $(2) > $@; \
-		rm $(3)
-
 ifdef CONFIG_TPL
 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 else
 SPL_PAYLOAD := u-boot.bin
 endif
 
-u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD)
-		$(call SPL_PAD_APPEND,$<,$(SPL_PAYLOAD),spl/u-boot-spl-pad.bin,$(CONFIG_SPL_PAD_TO))
+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)
 
-tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin
-		$(call SPL_PAD_APPEND,$<,u-boot.bin,tpl/u-boot-tpl-pad.bin,$(CONFIG_TPL_PAD_TO))
+OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
+				   --pad-to=$(CONFIG_TPL_PAD_TO)
+tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
+	$(call if_changed,pad_cat)
 
-u-boot-with-spl.imx: spl/u-boot-spl.bin u-boot.bin
-		$(MAKE) $(build)=arch/arm/imx-common \
-			$(OBJTREE)/u-boot-with-spl.imx
+SPL: spl/u-boot-spl.bin FORCE
+	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 
-u-boot-with-nand-spl.imx: spl/u-boot-spl.bin u-boot.bin
-		$(MAKE) $(build)=arch/arm/imx-common \
-			$(OBJTREE)/u-boot-with-nand-spl.imx
+u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
+	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 
-u-boot.ubl:       u-boot-with-spl.bin
-		tools/mkimage -n $(UBL_CONFIG) -T ublimage \
-		-e $(CONFIG_SYS_TEXT_BASE) -d $< u-boot.ubl
+MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 
-u-boot.ais:       spl/u-boot-spl.bin u-boot.img
-		tools/mkimage -s -n $(if $(CONFIG_AIS_CONFIG_FILE),$(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
-			-T aisimage \
-			-e $(CONFIG_SPL_TEXT_BASE) \
-			-d spl/u-boot-spl.bin \
-			spl/u-boot-spl.ais
-		$(OBJCOPY) ${OBJCFLAGS} -I binary \
-			--pad-to=$(CONFIG_SPL_MAX_SIZE) -O binary \
-			spl/u-boot-spl.ais spl/u-boot-spl-pad.ais
-		cat spl/u-boot-spl-pad.ais u-boot.img > u-boot.ais
+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)
 
-u-boot.sb:       u-boot.bin spl/u-boot-spl.bin
-		$(MAKE) $(build)=$(CPUDIR)/$(SOC)/ $(OBJTREE)/u-boot.sb
+OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE)
+u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
+	$(call if_changed,pad_cat)
+
+u-boot.sb: u-boot.bin spl/u-boot-spl.bin
+	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs $(objtree)/u-boot.sb
 
 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 # Both images are created using mkimage (crc etc), so that the ROM
@@ -793,38 +866,40 @@ u-boot.sb:       u-boot.bin spl/u-boot-spl.bin
 # 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
-u-boot.spr:	u-boot.img spl/u-boot-spl.bin
-		tools/mkimage -A $(ARCH) -T firmware -C none \
-		-a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER \
-		-d spl/u-boot-spl.bin $@
-		$(OBJCOPY) -I binary -O binary \
-			--pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff $@
-		cat u-boot.img >> $@
+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_TEGRA),)
-u-boot-nodtb-tegra.bin: spl/u-boot-spl.bin u-boot.bin
-		$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SYS_TEXT_BASE) -O binary spl/u-boot-spl spl/u-boot-spl-pad.bin
-		cat spl/u-boot-spl-pad.bin u-boot.bin > $@
-		rm spl/u-boot-spl-pad.bin
+OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(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 u-boot.dtb
-		cat u-boot-nodtb-tegra.bin u-boot.dtb > $@
+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
-		cat spl/u-boot-spl.bin u-boot.img > $@
+u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
+	$(call if_changed,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.
-u-boot-img-spl-at-end.bin: spl/u-boot-spl.bin u-boot.img
-		$(OBJCOPY) -I binary -O binary --pad-to=$(CONFIG_UBOOT_PAD_TO) \
-			 --gap-fill=0xff u-boot.img $@
-		cat spl/u-boot-spl.bin >> $@
+
+OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
+	--pad-to=$(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,
@@ -838,118 +913,120 @@ u-boot.elf: u-boot.bin
 		--defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
 		-Ttext=$(CONFIG_SYS_TEXT_BASE)
 
-ifeq ($(CONFIG_SANDBOX),y)
-GEN_UBOOT = \
-		$(CC) $(SYMS) -T u-boot.lds \
-			-Wl,--start-group $(LIBS) -Wl,--end-group \
-			$(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map -o u-boot
-else
-GEN_UBOOT = \
-		$(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \
-			$(OBJS) \
-			--start-group $(LIBS) --end-group $(PLATFORM_LIBS) \
-			-Map u-boot.map -o u-boot
-endif
+# Rule to link u-boot
+# May be overridden by arch/$(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
 
-u-boot:	depend $(SUBDIR_TOOLS) $(OBJS) $(LIBS) u-boot.lds
-		$(GEN_UBOOT)
+u-boot:	$(u-boot-init) $(u-boot-main) u-boot.lds
+	$(call if_changed,u-boot__)
 ifeq ($(CONFIG_KALLSYMS),y)
-		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
-		$(GEN_UBOOT) common/system_map.o
+	smap=`$(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
+	$(call cmd,u-boot__) common/system_map.o
 endif
 
-$(OBJS):
-	@:
-
-$(LIBS):	depend $(SUBDIR_TOOLS) scripts_basic
-		$(Q)$(MAKE) $(build)=$(patsubst %/,%,$(dir $@))
-
-$(SUBDIRS):	depend scripts_basic
-		$(Q)$(MAKE) $(build)=$@
-
-$(SUBDIR_EXAMPLES-y): u-boot
-
-u-boot.lds: $(LDSCRIPT) depend
-		$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$< >$@
-
-nand_spl:	$(TIMESTAMP_FILE) $(VERSION_FILE) depend scripts_basic
-		$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
+# The actual objects are generated when descending, 
+# make sure no implicit rule kicks in
+$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
 
-u-boot-nand.bin:	nand_spl u-boot.bin
-		cat nand_spl/u-boot-spl-16k.bin u-boot.bin > u-boot-nand.bin
+# 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
 
-spl/u-boot-spl.bin:	$(SUBDIR_TOOLS) depend scripts_basic
-		$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
+PHONY += $(u-boot-dirs)
+$(u-boot-dirs): prepare scripts
+	$(Q)$(MAKE) $(build)=$@
 
-tpl/u-boot-tpl.bin:	$(SUBDIR_TOOLS) depend scripts_basic
-		$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
+tools: prepare
+# The "tools" are needed early
+$(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: Makefile 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)/include/config.mk ]; then \
+		echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
+		echo >&2 "  in the '$(srctree)' directory.";\
+		/bin/false; \
+	fi;
+endif
 
-# Explicitly make _depend in subdirs containing multiple targets to prevent
-# parallel sub-makes creating .depend files simultaneously.
-depend dep:	$(TIMESTAMP_FILE) $(VERSION_FILE) \
-		include/spl-autoconf.mk \
-		include/tpl-autoconf.mk \
-		include/autoconf.mk \
-		include/generated/generic-asm-offsets.h \
-		include/generated/asm-offsets.h
+# prepare2 creates a makefile if using a separate output directory
+prepare2: prepare3 outputmakefile
 
-TAG_SUBDIRS = $(SUBDIRS)
-TAG_SUBDIRS += $(dir $(LIBS))
-TAG_SUBDIRS += include
+prepare1: prepare2 $(version_h) $(timestamp_h)
+ifeq ($(__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
 
-FIND := find
-FINDFLAGS := -L
+archprepare: prepare1 scripts_basic
 
-PHONY += checkstack
+prepare0: archprepare FORCE
+	$(Q)$(MAKE) $(build)=.
 
-checkstack:
-	$(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
-	$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
+# All the preparing..
+prepare: prepare0
 
-tags ctags:
-		ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
-						-name '*.[chS]' -print`
+# Generate some files
+# ---------------------------------------------------------------------------
 
-etags:
-		etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
-						-name '*.[chS]' -print`
-cscope:
-		$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
-						cscope.files
-		cscope -b -q -k
+define filechk_version.h
+	(echo \#define PLAIN_VERSION \"$(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
 
-SYSTEM_MAP = \
-		$(NM) $1 | \
-		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
-		LC_ALL=C sort
-System.map:	u-boot
-		@$(call SYSTEM_MAP,$<) > $@
+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
 
-checkthumb:
-	@if test $(call cc-version) -lt 0404; then \
-		echo -n '*** Your GCC does not produce working '; \
-		echo 'binaries in THUMB mode.'; \
-		echo '*** Your board is configured for THUMB mode.'; \
-		false; \
-	fi
-
-# GCC 3.x is reported to have problems generating the type of relocation
-# that U-Boot wants.
-# See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
-checkgcc4:
-	@if test $(call cc-version) -lt 0400; then \
-		echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
-		false; \
-	fi
+$(version_h): $(srctree)/Makefile FORCE
+	$(call filechk,version.h)
 
-checkdtc:
-	@if test $(call dtc-version) -lt 0104; then \
-		echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
-		false; \
-	fi
+$(timestamp_h): $(srctree)/Makefile FORCE
+	$(call filechk,timestamp.h)
 
 #
 # Auto-generate the autoconf.mk file (which is included by all makefiles)
@@ -974,69 +1051,76 @@ quiet_cmd_autoconf = GEN     $@
 include/autoconf.mk: include/config.h
 	$(call cmd,autoconf)
 
-# Auto-generate the spl-autoconf.mk file (which is included by all makefiles for SPL)
-quiet_cmd_tpl-autoconf = GEN     $@
-      cmd_tpl-autoconf = \
-	$(CPP) $(c_flags) -DCONFIG_TPL_BUILD  -DCONFIG_SPL_BUILD\
-			-DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
-		sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
-	rm $@.tmp
+# ---------------------------------------------------------------------------
 
-include/tpl-autoconf.mk: include/config.h
-	$(call cmd,tpl-autoconf)
+PHONY += depend dep
+depend dep:
+	@echo '*** Warning: make $@ is unnecessary now.'
 
-quiet_cmd_spl-autoconf = GEN     $@
-      cmd_spl-autoconf = \
-	$(CPP) $(c_flags) -DCONFIG_SPL_BUILD -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
-		sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
-	rm $@.tmp
+# ---------------------------------------------------------------------------
+quiet_cmd_cpp_lds = LDS     $@
+cmd_cpp_lds = $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \
+		-x assembler-with-cpp -P -o $@ $<
+
+u-boot.lds: $(LDSCRIPT) prepare FORCE
+	$(call if_changed,cpp_lds)
+
+PHONY += nand_spl
+nand_spl: prepare
+	$(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
+	@echo >&2
+	@echo >&2 "==================== WARNING ====================="
+	@echo >&2 "nand_spl will not be included in v2014.07 release."
+	@echo >&2 "Please switch over to SPL."
+	@echo >&2 "Otherwise, this board will be removed."
+	@echo >&2 "=================================================="
+	@echo >&2
+
+nand_spl/u-boot-spl-16k.bin: nand_spl
+	@:
 
-include/spl-autoconf.mk: include/config.h
-	$(call cmd,spl-autoconf)
+u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
+	$(call if_changed,cat)
 
-quiet_cmd_offsets = GEN     $@
-      cmd_offsets = $(srctree)/tools/scripts/make-asm-offsets $< $@
+spl/u-boot-spl.bin: spl/u-boot-spl
+	@:
+spl/u-boot-spl: tools prepare
+	$(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
 
-include/generated/generic-asm-offsets.h: lib/asm-offsets.s
-	$(call cmd,offsets)
+tpl/u-boot-tpl.bin: tools prepare
+	$(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
 
-quiet_cmd_asm-offsets.s = CC      $@
-      cmd_asm-offsets.s = mkdir -p lib; \
-		$(CC) -DDO_DEPS_ONLY \
-		$(c_flags) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
-		-o $@ $< -c -S
+TAG_SUBDIRS := $(u-boot-dirs) include
 
-lib/asm-offsets.s: $(srctree)/lib/asm-offsets.c include/config.h
-	$(call cmd,asm-offsets.s)
+FIND := find
+FINDFLAGS := -L
 
-include/generated/asm-offsets.h: $(CPUDIR)/$(SOC)/asm-offsets.s
-	$(call cmd,offsets)
+tags ctags:
+		ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
+						-name '*.[chS]' -print`
 
-quiet_cmd_soc_asm-offsets.s = CC      $@
-      cmd_soc_asm-offsets.s = mkdir -p $(CPUDIR)/$(SOC); \
-	if [ -f $(srctree)/$(CPUDIR)/$(SOC)/asm-offsets.c ];then \
-		$(CC) -DDO_DEPS_ONLY \
-		$(c_flags) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
-			-o $@ $(srctree)/$(CPUDIR)/$(SOC)/asm-offsets.c -c -S; \
-	else \
-		touch $@; \
-	fi
+etags:
+		etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
+						-name '*.[chS]' -print`
+cscope:
+		$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
+						cscope.files
+		cscope -b -q -k
 
-$(CPUDIR)/$(SOC)/asm-offsets.s:	include/config.h
-	$(call cmd,soc_asm-offsets.s)
+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
 
 #########################################################################
-else	# !config.mk
-all u-boot.hex u-boot.srec u-boot.bin \
-u-boot.img u-boot.dis u-boot \
-$(filter-out tools,$(SUBDIRS)) \
-depend dep tags ctags etags cscope System.map:
-	@echo "System not configured - see README" >&2
-	@ exit 1
-
-tools: $(VERSION_FILE) $(TIMESTAMP_FILE)
-	$(MAKE) $(build)=$@ all
-endif	# config.mk
 
 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
 # R_AARCH64_RELATIVE (64-bit).
@@ -1049,36 +1133,14 @@ checkarmreloc: u-boot
 		false; \
 	fi
 
-$(VERSION_FILE):
-		@mkdir -p $(dir $(VERSION_FILE))
-		@( localvers='$(shell $(TOPDIR)/scripts/setlocalversion $(TOPDIR))' ; \
-		   printf '#define PLAIN_VERSION "%s%s"\n' \
-			"$(U_BOOT_VERSION)" "$${localvers}" ; \
-		   printf '#define U_BOOT_VERSION "U-Boot %s%s"\n' \
-			"$(U_BOOT_VERSION)" "$${localvers}" ; \
-		) > $@.tmp
-		@( printf '#define CC_VERSION_STRING "%s"\n' \
-		 '$(shell $(CC) --version | head -n 1)' )>>  $@.tmp
-		@( printf '#define LD_VERSION_STRING "%s"\n' \
-		 '$(shell $(LD) -v | head -n 1)' )>>  $@.tmp
-		@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
-
-$(TIMESTAMP_FILE):
-		@mkdir -p $(dir $(TIMESTAMP_FILE))
-		@LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"' > $@.tmp
-		@LC_ALL=C date +'#define U_BOOT_TIME "%T"' >> $@.tmp
-		@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
-
-easylogo env gdb:
-	$(Q)$(MAKE) $(build)=tools/$@ MTD_VERSION=${MTD_VERSION}
-
-gdbtools: gdb
-
-xmldocs pdfdocs psdocs htmldocs mandocs: tools/kernel-doc/docproc
-	$(Q)$(MAKE) U_BOOT_VERSION=$(U_BOOT_VERSION) $(build)=doc/DocBook $@
-
-tools-all: easylogo env gdb $(VERSION_FILE) $(TIMESTAMP_FILE)
-	$(Q)$(MAKE) $(build)=tools HOST_TOOLS_ALL=y
+env: scripts_basic
+	$(Q)$(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:
@@ -1089,106 +1151,244 @@ include/license.h: tools/bin2header COPYING
 	cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
 #########################################################################
 
-unconfig:
-	@rm -f include/config.h include/config.mk \
-		board/*/config.tmp board/*/*/config.tmp \
-		include/autoconf.mk include/autoconf.mk.dep \
-		include/spl-autoconf.mk \
-		include/tpl-autoconf.mk
+###
+# 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 \
+	       include/autoconf.mk* include/spl-autoconf.mk \
+	       include/tpl-autoconf.mk
+
+# Directories & files removed with 'make clobber'
+CLOBBER_DIRS  += $(patsubst %,spl/%, $(filter-out Makefile, \
+		 $(shell ls -1 spl 2>/dev/null))) \
+		 tpl
+CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
+
+# Directories & files removed with 'make mrproper'
+MRPROPER_DIRS  += include/config include/generated
+MRPROPER_FILES += .config .config.old \
+		  tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
+		  include/config.h include/config.mk
+
+# 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 $f/Makefile),$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
+	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
+		-path './nand_spl/*' -type l -print | xargs rm -f
+
+# clobber
+#
+clobber: rm-dirs  := $(CLOBBER_DIRS)
+clobber: rm-files := $(CLOBBER_FILES)
 
-%_config::	unconfig
-	@$(MKCONFIG) -A $(@:_config=)
+PHONY += clobber
 
-#########################################################################
+clobber: clean
+	$(call cmd,rmdirs)
+	$(call cmd,rmfiles)
 
-clean:
-	@rm -f examples/standalone/atmel_df_pow2			  \
-	       examples/standalone/hello_world				  \
-	       examples/standalone/interrupt				  \
-	       examples/standalone/mem_to_mem_idma2intr			  \
-	       examples/standalone/sched				  \
-	       $(addprefix examples/standalone/, smc91111_eeprom smc911x_eeprom) \
-	       examples/standalone/test_burst				  \
-	       examples/standalone/timer
-	@rm -f $(addprefix examples/api/, demo demo.bin)
-	@rm -f tools/bmp_logo	   tools/easylogo/easylogo		  \
-	       tools/env/fw_printenv					  \
-	       tools/envcrc						  \
-	       $(addprefix tools/gdb/, gdbcont gdbsend)			  \
-	       tools/gen_eth_addr    tools/img2srec			  \
-	       tools/dumpimage						  \
-	       $(addprefix tools/, mkenvimage mkimage)			  \
-	       tools/mpc86x_clk						  \
-	       $(addprefix tools/, mk$(BOARD)spl mkexynosspl)		  \
-	       tools/mxsboot						  \
-	       tools/ncb		   tools/ubsha1			  \
-	       tools/kernel-doc/docproc					  \
-	       tools/proftool
-	@rm -f $(addprefix board/cray/L1/, bootscript.c bootscript.image) \
-	       board/matrix_vision/*/bootscript.img			  \
-	       spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl		  \
-	       u-boot.lds						  \
-	       $(addprefix arch/blackfin/cpu/, init.lds init.elf)
-	@rm -f include/bmp_logo.h
-	@rm -f include/bmp_logo_data.h
-	@rm -f lib/asm-offsets.s
-	@rm -f include/generated/asm-offsets.h
-	@rm -f $(CPUDIR)/$(SOC)/asm-offsets.s
-	@rm -f $(TIMESTAMP_FILE) $(VERSION_FILE)
-	@$(MAKE) -f $(srctree)/doc/DocBook/Makefile cleandocs
-	@find $(OBJTREE) -type f \
-		\( -name 'core' -o -name '*.bak' -o -name '*~' -o -name '*.su' \
-		-o -name '*.o'	-o -name '*.a' -o -name '*.exe' -o -name '*.cmd' \
-		-o -name '*.cfgtmp' \) -print \
-		| xargs rm -f
-
-# Removes everything not needed for testing u-boot
-tidy:	clean
-	@find $(OBJTREE) -type f \( -name '*.depend*' \) -print | xargs rm -f
-
-clobber:	tidy
-	@find $(OBJTREE) -type f \( -name '*.srec' \
-		-o -name '*.bin' -o -name u-boot.img \) \
-		-print0 | xargs -0 rm -f
-	@rm -f $(OBJS) *.bak ctags etags TAGS \
-		cscope.* *.*~
-	@rm -f u-boot u-boot.map u-boot.hex $(ALL-y)
-	@rm -f u-boot.kwb
-	@rm -f u-boot.pbl
-	@rm -f u-boot.imx
-	@rm -f u-boot-with-spl.imx
-	@rm -f u-boot-with-nand-spl.imx
-	@rm -f u-boot.ubl
-	@rm -f u-boot.ais
-	@rm -f u-boot.dtb
-	@rm -f u-boot.sb
-	@rm -f u-boot.spr
-	@rm -f $(addprefix nand_spl/, u-boot.lds u-boot.lst System.map)
-	@rm -f $(addprefix nand_spl/, u-boot-nand_spl.lds u-boot-spl u-boot-spl.map)
-	@rm -f $(addprefix spl/, u-boot-spl u-boot-spl.bin u-boot-spl.map)
-	@rm -f spl/u-boot-spl.lds
-	@rm -f $(addprefix tpl/, u-boot-tpl u-boot-tpl.bin u-boot-tpl.map)
-	@rm -f tpl/u-boot-spl.lds
-	@rm -f MLO MLO.byteswap
-	@rm -f SPL
-	@rm -f tools/xway-swap-bytes
-	@rm -fr include/asm/proc include/asm/arch include/asm
-	@rm -fr include/generated
-	@[ ! -d nand_spl ] || find nand_spl -name "*" -type l -print | xargs rm -f
-	@rm -f dts/*.tmp
-	@rm -f $(addprefix spl/, u-boot-spl.ais, u-boot-spl-pad.ais)
-
-mrproper \
-distclean:	clobber unconfig
-ifneq ($(OBJTREE),$(SRCTREE))
-	rm -rf *
-endif
+# 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 arch/*/include/asm/proc
+
+# distclean
+#
+PHONY += distclean
+
+distclean: mrproper
+	@find $(srctree) $(RCS_FIND_IGNORE) \
+		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
+		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
+		-o -name '.*.rej' \
+		-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
+		-type f -print | xargs rm -f
 
 backup:
 	F=`basename $(TOPDIR)` ; 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  ''
+# uncomment after adding Kconfig feature
+#	@echo  'Configuration targets:'
+#	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
+#	@echo  ''
+	@echo  'Other generic targets:'
+	@echo  '  all		  - Build all necessary images depending on configuration'
+	@echo  '  u-boot	  - Build the bare u-boot'
+	@echo  '  dir/            - Build all files in dir and below'
+	@echo  '  dir/file.[oisS] - Build specified target only'
+	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
+	@echo  '                    (requires a recent binutils and recent build (System.map))'
+	@echo  '  tags/TAGS	  - Generate tags file for editors'
+	@echo  '  cscope	  - Generate cscope index'
+	@echo  '  ubootrelease	  - Output the release version string'
+	@echo  '  ubootversion	  - Output the version stored in Makefile'
+	@echo  ''
+	@echo  'Static analysers'
+	@echo  '  checkstack      - Generate a list of stack hogs'
+	@echo  ''
+	@echo  'Documentation targets:'
+	@$(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