X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=Makefile;h=36a9a283b051527df532d16c5f4dd69c9be3556c;hb=a5464f2bd22b46d440bb634eddac3b7cfefe10c0;hp=d187e6b3343bbe546a8e42d173c19b8ad7b786b7;hpb=5b1f1f4aff912d8c8a98113d1af1fdaa2c9038a4;p=u-boot

diff --git a/Makefile b/Makefile
index d187e6b334..36a9a283b0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,7 @@
-#
-# (C) Copyright 2000-2013
-# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
-
-VERSION = 2014
-PATCHLEVEL = 04
+VERSION = 2015
+PATCHLEVEL = 01
 SUBLEVEL =
-EXTRAVERSION = -rc1
+EXTRAVERSION =
 NAME =
 
 # *DOCUMENTATION*
@@ -17,11 +10,9 @@ NAME =
 # 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
+# Do not use make's built-in rules and variables
+# (this increases performance and avoids hard-to-debug behaviour);
+MAKEFLAGS += -rR
 
 # Avoid funny character set dependencies
 unexport LC_ALL
@@ -29,6 +20,9 @@ LC_COLLATE=C
 LC_NUMERIC=C
 export LC_COLLATE LC_NUMERIC
 
+# Avoid interference with shell env settings
+unexport GREP_OPTIONS
+
 # We are using a recursive build, so we need to do a little thinking
 # to get the ordering right.
 #
@@ -45,6 +39,29 @@ export LC_COLLATE LC_NUMERIC
 # descending is started. They are now explicitly listed as the
 # prepare rule.
 
+# Beautify output
+# ---------------------------------------------------------------------------
+#
+# Normally, we echo the whole command before executing it. By making
+# that echo $($(quiet)$(cmd)), we now have the possibility to set
+# $(quiet) to choose other forms of output instead, e.g.
+#
+#         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
+#         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
+#
+# If $(quiet) is empty, the whole command will be printed.
+# If it is set to "quiet_", only the short version will be printed.
+# If it is set to "silent_", nothing will be printed at all, since
+# the variable $(silent_cmd_cc_o_c) doesn't exist.
+#
+# A simple variant is to prefix commands with $(Q) - that's useful
+# for commands that shall be hidden in non-verbose mode.
+#
+#	$(Q)ln $@ :<
+#
+# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
+# If KBUILD_VERBOSE equals 1 then the above command is displayed.
+#
 # To put more focus on warnings, be less verbose as default
 # Use 'make V=1' to see the full commands
 
@@ -55,33 +72,28 @@ 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 ($(KBUILD_VERBOSE),1)
+  quiet =
+  Q =
+else
+  quiet=quiet_
+  Q = @
+endif
 
-ifeq ("$(origin C)", "command line")
-  KBUILD_CHECKSRC = $(C)
+# If the user is running make -s (silent mode), suppress echoing of
+# commands
+
+ifneq ($(filter 4.%,$(MAKE_VERSION)),)	# make-4
+ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
+  quiet=silent_
 endif
-ifndef KBUILD_CHECKSRC
-  KBUILD_CHECKSRC = 0
+else					# make-3.8x
+ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
+  quiet=silent_
 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
+export quiet Q KBUILD_VERBOSE
 
 # kbuild supports saving output files in a separate directory.
 # To locate output files in a separate directory two syntaxes are supported.
@@ -98,7 +110,6 @@ endif
 # 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 ($(KBUILD_SRC),)
@@ -109,10 +120,6 @@ ifeq ("$(origin O)", "command line")
   KBUILD_OUTPUT := $(O)
 endif
 
-ifeq ("$(origin W)", "command line")
-  export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
-endif
-
 # That's our default target when none is given on the command line
 PHONY := _all
 _all:
@@ -124,9 +131,10 @@ ifneq ($(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 cd $(KBUILD_OUTPUT) && /bin/pwd)
+KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
+								&& /bin/pwd)
 $(if $(KBUILD_OUTPUT),, \
-     $(error output directory "$(saved-output)" does not exist))
+     $(error failed to create output directory "$(saved-output)"))
 
 PHONY += $(MAKECMDGOALS) sub-make
 
@@ -134,10 +142,8 @@ $(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))
+	$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
+	-f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
 
 # Leave processing to above invocation of make
 skip-makefile := 1
@@ -147,6 +153,39 @@ endif # ifeq ($(KBUILD_SRC),)
 # We process the rest of the Makefile if this is the final invocation of make
 ifeq ($(skip-makefile),)
 
+# Do not print "Entering directory ...",
+# but we want to display it when entering to the output directory
+# so that IDEs/editors are able to understand relative filenames.
+MAKEFLAGS += --no-print-directory
+
+# Call a source code checker (by default, "sparse") as part of the
+# C compilation.
+#
+# Use 'make C=1' to enable checking of only re-compiled files.
+# Use 'make C=2' to enable checking of *all* source files, regardless
+# of whether they are re-compiled or not.
+#
+# See the file "Documentation/sparse.txt" for more details, including
+# where to get the "sparse" utility.
+
+ifeq ("$(origin C)", "command line")
+  KBUILD_CHECKSRC = $(C)
+endif
+ifndef KBUILD_CHECKSRC
+  KBUILD_CHECKSRC = 0
+endif
+
+# Use make M=dir to specify directory of external module to build
+# Old syntax make ... SUBDIRS=$PWD is still supported
+# Setting the environment variable KBUILD_EXTMOD take precedence
+ifdef SUBDIRS
+  KBUILD_EXTMOD ?= $(SUBDIRS)
+endif
+
+ifeq ("$(origin M)", "command line")
+  KBUILD_EXTMOD := $(M)
+endif
+
 # If building an external module we do not care about the all: rule
 # but instead _all depend on modules
 PHONY += all
@@ -156,8 +195,18 @@ else
 _all: modules
 endif
 
-srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
-objtree		:= $(CURDIR)
+ifeq ($(KBUILD_SRC),)
+        # building in the source tree
+        srctree := .
+else
+        ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
+                # building in a subdirectory of the source tree
+                srctree := ..
+        else
+                srctree := $(KBUILD_SRC)
+        endif
+endif
+objtree		:= .
 src		:= $(srctree)
 obj		:= $(objtree)
 
@@ -165,24 +214,11 @@ VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 
 export srctree objtree VPATH
 
-OBJTREE		:= $(objtree)
-SPLTREE		:= $(OBJTREE)/spl
-TPLTREE		:= $(OBJTREE)/tpl
-SRCTREE		:= $(srctree)
-TOPDIR		:= $(SRCTREE)
-export	TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE
-
-MKCONFIG	:= $(SRCTREE)/mkconfig
-export MKCONFIG
-
 # Make sure CDPATH settings don't interfere
 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/ \
@@ -198,9 +234,6 @@ HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 
 export	HOSTARCH HOSTOS
 
-# Deal with colliding definitions from tcsh etc.
-VENDOR=
-
 #########################################################################
 
 # set default to nothing for native builds
@@ -208,13 +241,18 @@ 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       = gcc
+HOSTCC       = cc
+HOSTCXX      = c++
 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
+HOSTCXXFLAGS = -O2
 
 ifeq ($(HOSTOS),cygwin)
 HOSTCFLAGS	+= -ansi
@@ -251,18 +289,18 @@ endif
 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.
+# 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
+# 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)),)
@@ -276,47 +314,6 @@ 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 ($(filter s% -s%,$(MAKEFLAGS)),)
-  quiet=silent_
-endif
-
-export quiet Q KBUILD_VERBOSE
-
-
 # Look for make include files relative to root of kernel src
 MAKEFLAGS += --include-dir=$(srctree)
 
@@ -342,30 +339,33 @@ STRIP		= $(CROSS_COMPILE)strip
 OBJCOPY		= $(CROSS_COMPILE)objcopy
 OBJDUMP		= $(CROSS_COMPILE)objdump
 AWK		= awk
-RANLIB		= $(CROSS_COMPILE)RANLIB
+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__
+KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 
 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 		   -Wno-format-security \
 		   -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 ARCH CPU BOARD VENDOR SOC
+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 MAKE AWK PERL PYTHON
+export HOSTCXX HOSTCXXFLAGS 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
@@ -375,8 +375,9 @@ export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_ve
 
 # Files to ignore in find ... statements
 
-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_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
 
@@ -411,9 +412,12 @@ endif
 # 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 \
-			 backup
+			 ubootversion backup
 
 config-targets := 0
 mixed-targets  := 0
@@ -439,12 +443,12 @@ 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
+PHONY += $(MAKECMDGOALS) __build_one_by_one
 
-$(MAKECMDGOALS): build-one-by-one
+$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
 	@:
 
-build-one-by-one:
+__build_one_by_one:
 	$(Q)set -e; \
 	for i in $(MAKECMDGOALS); do \
 		$(MAKE) -f $(srctree)/Makefile $$i; \
@@ -456,84 +460,87 @@ ifeq ($(config-targets),1)
 # *config targets only - make sure prerequisites are updated, and descend
 # in scripts/kconfig to make the *config target
 
-# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
-# KBUILD_DEFCONFIG may point out an alternative default configuration
-# used for 'make defconfig'
+KBUILD_DEFCONFIG := sandbox_defconfig
+export KBUILD_DEFCONFIG KBUILD_KCONFIG
 
-%_config:: outputmakefile
-	@$(MKCONFIG) -A $(@:_config=)
+config: scripts_basic outputmakefile FORCE
+	+$(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.
 
-# load ARCH, BOARD, and CPU configuration
--include include/config.mk
-
 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
 
-# load other configuration
+# 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 $(srctree)/config.mk
-
-ifeq ($(wildcard include/config.mk),)
-$(error "System not configured - see README")
-endif
-
-ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
-ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
-$(error Your architecture does not support generic board. \
-Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
-endif
+include $(srctree)/arch/$(ARCH)/Makefile
 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
+	#LDSCRIPT := $(srctree)/board/$(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
 
 # If there is no specified link script, we look in a number of places for it
 ifndef LDSCRIPT
-	ifeq ($(CONFIG_NAND_U_BOOT),y)
-		LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
-		ifeq ($(wildcard $(LDSCRIPT)),)
-			LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
-		endif
-	endif
-	ifeq ($(wildcard $(LDSCRIPT)),)
-		LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
-	endif
 	ifeq ($(wildcard $(LDSCRIPT)),)
-		LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
+		LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 	endif
 	ifeq ($(wildcard $(LDSCRIPT)),)
-		LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
-		# We don't expect a Makefile here
-		LDSCRIPT_MAKEFILE_DIR =
+		LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 	endif
 	ifeq ($(wildcard $(LDSCRIPT)),)
-$(error could not find linker script)
+		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)
 
-KBUILD_CFLAGS += -Os #-fomit-frame-pointer
+ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+KBUILD_CFLAGS	+= -Os
+else
+KBUILD_CFLAGS	+= -O2
+endif
 
 ifdef BUILD_TAG
 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
@@ -560,47 +567,46 @@ 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 += $(KCFLAGS)
+
 # Use UBOOTINCLUDE when you must reference the include/ directory.
 # Needed to be compatible with the O= option
-UBOOTINCLUDE    :=
-ifneq ($(OBJTREE),$(SRCTREE))
-UBOOTINCLUDE	+= -I$(OBJTREE)/include
-endif
-UBOOTINCLUDE	+= -I$(srctree)/include \
-		-I$(srctree)/arch/$(ARCH)/include
+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) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
+cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
+							$(NOSTDINC_FLAGS)
 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 
-.PHONY : $(VERSION_FILE) $(TIMESTAMP_FILE)
-
 #########################################################################
 # 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/
@@ -608,7 +614,6 @@ 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-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
@@ -635,19 +640,12 @@ libs-y += drivers/usb/musb-new/
 libs-y += drivers/usb/phy/
 libs-y += drivers/usb/ulpi/
 libs-y += common/
-libs-y += lib/libfdt/
 libs-$(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 += board/$(BOARDDIR)/
+libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 
 libs-y := $(sort $(libs-y))
 
@@ -662,23 +660,20 @@ u-boot-main := $(libs-y)
 
 
 # Add GCC lib
-ifdef USE_PRIVATE_LIBGCC
-ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
-PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/lib.a
-else
-PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
-endif
+ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
+PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 else
 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 endif
 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 export PLATFORM_LIBS
+export PLATFORM_LIBGCC
 
 # Special flags for CPP when processing the linker script.
 # Pass the version down so we can handle backwards compatibility
 # on the fly.
 LDPPFLAGS += \
-	-include $(TOPDIR)/include/u-boot/u-boot.lds.h \
+	-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')
@@ -713,20 +708,30 @@ 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
+ALL-y += u-boot.srec u-boot.bin System.map binary_size_check
 
-ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
 ALL-$(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-$(CONFIG_OF_SEPARATE) += u-boot-dtb.bin
+ALL-$(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
 
+# We can't do this yet due to the need for binary blobs
+# ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
+
 # enable combined SPL/u-boot/dtb rules for tegra
 ifneq ($(CONFIG_TEGRA),)
 ifeq ($(CONFIG_SPL),y)
@@ -738,41 +743,96 @@ endif
 endif
 endif
 
-LDFLAGS_u-boot += -T u-boot.lds $(LDFLAGS_FINAL)
+# Add optional build target if defined in board/cpu/soc headers
+ifneq ($(CONFIG_BUILD_TARGET),)
+ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
+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:		$(ALL-y)
+ifneq ($(CONFIG_SYS_GENERIC_BOARD),y)
+	@echo "===================== WARNING ======================"
+	@echo "Please convert this board to generic board."
+	@echo "Otherwise it will be removed by the end of 2014."
+	@echo "See doc/README.generic-board for further information"
+	@echo "===================================================="
+endif
 
 PHONY += dtbs
 dtbs dts/dt.dtb: checkdtc u-boot
 	$(Q)$(MAKE) $(build)=dts dtbs
 
-u-boot-dtb.bin: u-boot.bin dts/dt.dtb
-		cat $^ >$@
+u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
+	$(call if_changed,cat)
 
-u-boot.hex:	u-boot
-		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@
+%.imx: %.bin
+	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 
-u-boot.srec:	u-boot
-		$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@
+quiet_cmd_copy = COPY    $@
+      cmd_copy = cp $< $@
 
-u-boot.bin:	u-boot
-		$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
-		$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
-		$(BOARD_SIZE_CHECK)
+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 \
+		$(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
+
+binary_size_check: u-boot.bin FORCE
+	@file_size=$(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)
+		$(LDR) -T $(CONFIG_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
@@ -782,25 +842,23 @@ 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"
+
+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.imx: u-boot.bin
-		$(MAKE) $(build)=arch/arm/imx-common $(objtree)/u-boot.imx
+u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
+	$(call if_changed,mkimage)
 
-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-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 
-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-dtb.img: u-boot-dtb.bin FORCE
+	$(call if_changed,mkimage)
 
 u-boot.sha1:	u-boot.bin
 		tools/ubsha1 u-boot.bin
@@ -808,52 +866,47 @@ 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
+	$(call if_changed,pad_cat)
+
+OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
+				   --pad-to=$(CONFIG_TPL_PAD_TO)
+tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
+	$(call if_changed,pad_cat)
 
-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))
+SPL: spl/u-boot-spl.bin FORCE
+	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 
-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
+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-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
+MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 
-u-boot.ubl:       u-boot-with-spl.bin
-		tools/mkimage -n $(UBL_CONFIG) -T ublimage \
-		-e $(CONFIG_SYS_TEXT_BASE) -d $< u-boot.ubl
+u-boot.ubl: u-boot-with-spl.bin FORCE
+	$(call if_changed,mkimage)
 
-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
+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.sb:       u-boot.bin spl/u-boot-spl.bin
-		$(MAKE) $(build)=$(CPUDIR)/$(SOC)/ $(OBJTREE)/u-boot.sb
+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
@@ -861,38 +914,135 @@ 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)
+
+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 >> $@
+
+# x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
+# reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
+# the middle.
+ifneq ($(CONFIG_X86_RESET_VECTOR),)
+rom: u-boot.rom FORCE
+
+IFDTOOL=$(objtree)/tools/ifdtool
+IFDTOOL_FLAGS  = -f 0:$(objtree)/u-boot.dtb
+IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
+IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot.bin
+IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
+
+ifneq ($(CONFIG_HAVE_INTEL_ME),)
+IFDTOOL_ME_FLAGS  = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
+IFDTOOL_ME_FLAGS += -i ME:$(srctree)/board/$(BOARDDIR)/me.bin
+endif
+
+ifneq ($(CONFIG_HAVE_MRC),)
+IFDTOOL_FLAGS += -w $(CONFIG_X86_MRC_ADDR):$(srctree)/board/$(BOARDDIR)/mrc.bin
+endif
+
+ifneq ($(CONFIG_HAVE_FSP),)
+IFDTOOL_FLAGS += -w $(CONFIG_FSP_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_FSP_FILE)
+endif
+
+ifneq ($(CONFIG_HAVE_CMC),)
+IFDTOOL_FLAGS += -w $(CONFIG_CMC_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_CMC_FILE)
+endif
+
+ifneq ($(CONFIG_X86_OPTION_ROM_ADDR),)
+IFDTOOL_FLAGS += -w $(CONFIG_X86_OPTION_ROM_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_X86_OPTION_ROM_FILE)
+endif
+
+quiet_cmd_ifdtool = IFDTOOL $@
+cmd_ifdtool  = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
+ifneq ($(CONFIG_HAVE_INTEL_ME),)
+cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_ME_FLAGS) u-boot.tmp;
+endif
+cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
+cmd_ifdtool += mv u-boot.tmp $@
+
+u-boot.rom: u-boot-x86-16bit.bin u-boot-dtb.bin
+	$(call if_changed,ifdtool)
+
+OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
+u-boot-x86-16bit.bin: u-boot FORCE
+	$(call if_changed,objcopy)
+endif
+
+ifneq ($(CONFIG_SUNXI),)
+OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
+				   --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
+u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin \
+			u-boot$(if $(CONFIG_OF_CONTROL),-dtb,).img FORCE
+	$(call if_changed,pad_cat)
+endif
 
 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 dts/dt.dtb
-		cat $^ > $@
+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)
+
+#Add a target to create boot binary having SPL binary in PBI format
+#concatenated with u-boot binary. It is need by PowerPC SoC having
+#internal SRAM <= 512KB.
+MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
+		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
+		-A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
+
+spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
+	$(call if_changed,mkimage)
+
+ifeq ($(ARCH),arm)
+UBOOT_BINLOAD := u-boot.img
+else
+UBOOT_BINLOAD := u-boot.bin
+endif
+
+OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
+			  --gap-fill=0xff
+
+u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
+	$(call if_changed,pad_cat)
 
 # PPC4xx needs the SPL at the end of the image, since the reset vector
 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
 # and need to introduce a new build target with the full blown U-Boot
 # at the start padded up to the start of the SPL image. And then concat
 # the SPL image to the end.
-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,
@@ -906,30 +1056,29 @@ 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 $(u-boot-main) -Wl,--end-group \
-			$(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map -o u-boot
-else
-GEN_UBOOT = \
-		$(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \
-			$(u-boot-init) \
-			--start-group $(u-boot-main) --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                 \
+      $(PLATFORM_LIBS) -Map u-boot.map
+
+quiet_cmd_smap = GEN     common/system_map.o
+cmd_smap = \
+	smap=`$(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
-		$(GEN_UBOOT)
+	$(call if_changed,u-boot__)
 ifeq ($(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
+	$(call cmd,smap)
+	$(call cmd,u-boot__) common/system_map.o
 endif
 
-# The actual objects are generated when descending, 
+# The actual objects are generated when descending,
 # make sure no implicit rule kicks in
 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
 
@@ -940,16 +1089,25 @@ $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
 # Error messages still appears in the original language
 
 PHONY += $(u-boot-dirs)
-$(u-boot-dirs): depend prepare scripts
+$(u-boot-dirs): prepare scripts
 	$(Q)$(MAKE) $(build)=$@
 
-tools: $(TIMESTAMP_FILE) $(VERSION_FILE)
+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.
@@ -962,10 +1120,10 @@ 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 $(srctree)
-prepare3:
+prepare3: include/config/uboot.release
 ifneq ($(KBUILD_SRC),)
-	@$(kecho) '  Using $(srctree) as source for u-boot'
-	$(Q)if [ -f $(srctree)/include/config.mk ]; then \
+	@$(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; \
@@ -975,78 +1133,85 @@ endif
 # prepare2 creates a makefile if using a separate output directory
 prepare2: prepare3 outputmakefile
 
-prepare1: prepare2
-	@:
+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
 
-#
-# Auto-generate the autoconf.mk file (which is included by all makefiles)
-#
-# This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
-# the dep file is only include in this top level makefile to determine when
-# to regenerate the autoconf.mk file.
+# Generate some files
+# ---------------------------------------------------------------------------
 
-quiet_cmd_autoconf_dep = GEN     $@
-      cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
-	-MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
+define filechk_version.h
+	(echo \#define PLAIN_VERSION \"$(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
 
-include/autoconf.mk.dep: include/config.h include/common.h
-	$(call cmd,autoconf_dep)
+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
 
-quiet_cmd_autoconf = GEN     $@
-      cmd_autoconf = \
-	$(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
-	sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
-	rm $@.tmp
+$(version_h): include/config/uboot.release FORCE
+	$(call filechk,version.h)
 
-include/autoconf.mk: include/config.h
-	$(call cmd,autoconf)
+$(timestamp_h): $(srctree)/Makefile FORCE
+	$(call filechk,timestamp.h)
 
-u-boot.lds: $(LDSCRIPT) depend
-		$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$< >$@
+# ---------------------------------------------------------------------------
 
-nand_spl:	$(TIMESTAMP_FILE) $(VERSION_FILE) depend prepare
-		$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
+PHONY += depend dep
+depend dep:
+	@echo '*** Warning: make $@ is unnecessary now.'
 
-u-boot-nand.bin:	nand_spl u-boot.bin
-		cat nand_spl/u-boot-spl-16k.bin u-boot.bin > u-boot-nand.bin
+# ---------------------------------------------------------------------------
+quiet_cmd_cpp_lds = LDS     $@
+cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
+		-D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
 
-spl/u-boot-spl.bin: tools depend prepare 
-		$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
+u-boot.lds: $(LDSCRIPT) prepare FORCE
+	$(call if_changed_dep,cpp_lds)
 
-tpl/u-boot-tpl.bin: tools depend prepare
-		$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
+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
 
-# Explicitly make _depend in subdirs containing multiple targets to prevent
-# parallel sub-makes creating .depend files simultaneously.
-depend dep:	$(TIMESTAMP_FILE) $(VERSION_FILE) \
-		include/generated/generic-asm-offsets.h \
-		include/generated/asm-offsets.h
+spl/sunxi-spl.bin: spl/u-boot-spl
+	@:
 
-TAG_SUBDIRS := $(u-boot-dirs) include
+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
 
-PHONY += checkstack
-
-checkstack:
-	$(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
-	$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
-
 tags ctags:
 		ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
 						-name '*.[chS]' -print`
 
 etags:
-		etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
+		etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
 						-name '*.[chS]' -print`
 cscope:
 		$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
@@ -1060,60 +1225,12 @@ SYSTEM_MAP = \
 System.map:	u-boot
 		@$(call SYSTEM_MAP,$<) > $@
 
-checkthumb:
-	@if test $(call cc-version) -lt 0404; then \
-		echo -n '*** Your GCC does not produce working '; \
-		echo 'binaries in THUMB mode.'; \
-		echo '*** Your board is configured for THUMB mode.'; \
-		false; \
-	fi
-
-# GCC 3.x is reported to have problems generating the type of relocation
-# that U-Boot wants.
-# See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
-checkgcc4:
-	@if test $(call cc-version) -lt 0400; then \
-		echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
-		false; \
-	fi
-
 checkdtc:
 	@if test $(call dtc-version) -lt 0104; then \
 		echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
 		false; \
 	fi
 
-quiet_cmd_offsets = GEN     $@
-      cmd_offsets = $(srctree)/tools/scripts/make-asm-offsets $< $@
-
-include/generated/generic-asm-offsets.h: lib/asm-offsets.s
-	$(call cmd,offsets)
-
-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
-
-lib/asm-offsets.s: $(srctree)/lib/asm-offsets.c include/config.h
-	$(call cmd,asm-offsets.s)
-
-include/generated/asm-offsets.h: $(CPUDIR)/$(SOC)/asm-offsets.s
-	$(call cmd,offsets)
-
-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 $@; \
-	fi
-
-$(CPUDIR)/$(SOC)/asm-offsets.s:	include/config.h
-	$(call cmd,soc_asm-offsets.s)
-
 #########################################################################
 
 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
@@ -1127,32 +1244,18 @@ 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 $@
-
-env: depend scripts_basic
+env: scripts_basic
 	$(Q)$(MAKE) $(build)=tools/$@
 
-tools-all: HOST_TOOLS_ALL=y
+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.. | \
@@ -1170,30 +1273,25 @@ include/license.h: tools/bin2header COPYING
 # 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 \
-	       board/*/config.tmp board/*/*/config.tmp \
-	       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*
+CLEAN_DIRS  += $(MODVERDIR) \
+	       $(foreach d, spl tpl, $(patsubst %,$d/%, \
+			$(filter-out include, $(shell ls -1 $d 2>/dev/null))))
+
+CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
+	       u-boot* MLO* SPL System.map
 
 # 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
+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 $f/Makefile),$f))
+clean-dirs	:= $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
 
 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
 
@@ -1212,19 +1310,6 @@ clean: $(clean-dirs)
 		-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)
-
-PHONY += clobber
-
-clobber: clean
-	$(call cmd,rmdirs)
-	$(call cmd,rmfiles)
 
 # mrproper - Delete all generated files, including .config
 #
@@ -1236,10 +1321,10 @@ PHONY += $(mrproper-dirs) mrproper archmrproper
 $(mrproper-dirs):
 	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
 
-mrproper: clobber $(mrproper-dirs)
+mrproper: clean $(mrproper-dirs)
 	$(call cmd,rmdirs)
 	$(call cmd,rmfiles)
-	@rm -f arch/*/include/asm/arch arch/*/include/asm/proc
+	@rm -f arch/*/include/asm/arch
 
 # distclean
 #
@@ -1249,14 +1334,58 @@ distclean: mrproper
 	@find $(srctree) $(RCS_FIND_IGNORE) \
 		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
 		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
-		-o -name '.*.rej' \
-		-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
+		-o -name '.*.rej' -o -name '*%' -o -name 'core' \
+		-o -name '*.pyc' \) \
 		-type f -print | xargs rm -f
+	@rm -f boards.cfg
 
 backup:
-	F=`basename $(TOPDIR)` ; cd .. ; \
+	F=`basename $(srctree)` ; cd .. ; \
 	gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
 
+help:
+	@echo  'Cleaning targets:'
+	@echo  '  clean		  - Remove most generated files but keep the config'
+	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
+	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
+	@echo  ''
+	@echo  'Configuration targets:'
+	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
+	@echo  ''
+	@echo  'Other generic targets:'
+	@echo  '  all		  - Build all necessary images depending on configuration'
+	@echo  '* u-boot	  - Build the bare u-boot'
+	@echo  '  dir/            - Build all files in dir and below'
+	@echo  '  dir/file.[oisS] - Build specified target only'
+	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
+	@echo  '                    (requires a recent binutils and recent build (System.map))'
+	@echo  '  tags/ctags	  - Generate ctags file for editors'
+	@echo  '  etags		  - Generate etags file for editors'
+	@echo  '  cscope	  - Generate cscope index'
+	@echo  '  ubootrelease	  - Output the release version string (use with make -s)'
+	@echo  '  ubootversion	  - Output the version stored in Makefile (use with make -s)'
+	@echo  ''
+	@echo  'Static analysers'
+	@echo  '  checkstack      - Generate a list of stack hogs'
+	@echo  ''
+	@echo  'Documentation targets:'
+	@$(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
 # ---------------------------------------------------------------------------
@@ -1272,16 +1401,90 @@ 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
+clean := -f $(srctree)/scripts/Makefile.clean obj
 
 endif	# skip-makefile