207 files changed, 1042 insertions, 1043 deletions

diff --git a/Makefile b/Makefile
index 46750ee812..7a620b5041 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 VERSION = 2020
 PATCHLEVEL = 05
 SUBLEVEL = 0
@@ -10,11 +11,9 @@ NAME = None
 # 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
+# That's our default target when none is given on the command line
+PHONY := _all
+_all:
 
 # We are using a recursive build, so we need to do a little thinking
 # to get the ordering right.
@@ -22,8 +21,8 @@ MAKEFLAGS += -rR --no-print-directory
 # Most importantly: sub-Makefiles should only ever modify files in
 # their own directory. If in some directory we have a dependency on
 # a file in another dir (which doesn't happen often, but it's often
-# unavoidable when linking the built-in.o targets which finally
-# turn into barebox), we will call a sub make in that other dir, and
+# unavoidable when linking the built-in.a targets which finally
+# turn into vmlinux), we will call a sub make in that other dir, and
 # after that we are sure that everything which is in that other dir
 # is now up to date.
 #
@@ -32,6 +31,45 @@ MAKEFLAGS += -rR --no-print-directory
 # descending is started. They are now explicitly listed as the
 # prepare rule.
 
+ifneq ($(sub_make_done),1)
+
+# 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
+LC_COLLATE=C
+LC_NUMERIC=C
+export LC_COLLATE LC_NUMERIC
+
+# Avoid interference with shell env settings
+unexport GREP_OPTIONS
+
+# 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.
+# If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt.
+#
 # To put more focus on warnings, be less verbose as default
 # Use 'make V=1' to see the full commands
 
@@ -42,6 +80,119 @@ ifndef KBUILD_VERBOSE
   KBUILD_VERBOSE = 0
 endif
 
+ifeq ($(KBUILD_VERBOSE),1)
+  quiet =
+  Q =
+else
+  quiet=quiet_
+  Q = @
+endif
+
+# If the user is running make -s (silent mode), suppress echoing of
+# commands
+
+ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
+  quiet=silent_
+endif
+
+export quiet Q KBUILD_VERBOSE
+
+# Kbuild will save output files in the current working directory.
+# This does not need to match to the root of the kernel source tree.
+#
+# For example, you can do this:
+#
+#  cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile
+#
+# If you want to save output files in a different location, there are
+# two syntaxes to specify it.
+#
+# 1) O=
+# Use "make O=dir/to/store/output/files/"
+#
+# 2) Set KBUILD_OUTPUT
+# Set the environment variable KBUILD_OUTPUT to point to the output directory.
+# export KBUILD_OUTPUT=dir/to/store/output/files/; make
+#
+# The O= assignment takes precedence over the KBUILD_OUTPUT environment
+# variable.
+
+# Do we want to change the working directory?
+ifeq ("$(origin O)", "command line")
+  KBUILD_OUTPUT := $(O)
+endif
+
+ifneq ($(KBUILD_OUTPUT),)
+# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
+# expand a shell special character '~'. We use a somewhat tedious way here.
+abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
+$(if $(abs_objtree),, \
+     $(error failed to create output directory "$(KBUILD_OUTPUT)"))
+
+# $(realpath ...) resolves symlinks
+abs_objtree := $(realpath $(abs_objtree))
+else
+abs_objtree := $(CURDIR)
+endif # ifneq ($(KBUILD_OUTPUT),)
+
+ifeq ($(abs_objtree),$(CURDIR))
+# Suppress "Entering directory ..." unless we are changing the work directory.
+MAKEFLAGS += --no-print-directory
+else
+need-sub-make := 1
+endif
+
+abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
+
+ifneq ($(words $(subst :, ,$(abs_srctree))), 1)
+$(error source directory cannot contain spaces or colons)
+endif
+
+ifneq ($(abs_srctree),$(abs_objtree))
+# Look for make include files relative to root of kernel src
+#
+# This does not become effective immediately because MAKEFLAGS is re-parsed
+# once after the Makefile is read. We need to invoke sub-make.
+MAKEFLAGS += --include-dir=$(abs_srctree)
+need-sub-make := 1
+endif
+
+ifneq ($(filter 3.%,$(MAKE_VERSION)),)
+# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x
+# We need to invoke sub-make to avoid implicit rules in the top Makefile.
+need-sub-make := 1
+# Cancel implicit rules for this Makefile.
+$(lastword $(MAKEFILE_LIST)): ;
+endif
+
+export abs_srctree abs_objtree
+export sub_make_done := 1
+
+ifeq ($(need-sub-make),1)
+
+PHONY += $(MAKECMDGOALS) sub-make
+
+$(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS)) _all: sub-make
+	@:
+
+# Invoke a second make in the output directory, passing relevant variables
+sub-make:
+	$(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS)
+
+endif # need-sub-make
+endif # sub_make_done
+
+# We process the rest of the Makefile if this is the final invocation of make
+ifeq ($(need-sub-make),)
+
+# CDPATH can have sideeffects; disable, since we do know where we want to cd to
+export CDPATH=
+
+# 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.
 #
@@ -49,8 +200,8 @@ endif
 # 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.
+# See the file "Documentation/dev-tools/sparse.rst" for more details,
+# including where to get the "sparse" utility.
 
 ifeq ("$(origin C)", "command line")
   KBUILD_CHECKSRC = $(C)
@@ -59,91 +210,108 @@ 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 ?= $(SUBDIRS)
-endif
+# Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the
+# directory of external module to build. Setting M= takes precedence.
 ifeq ("$(origin M)", "command line")
   KBUILD_EXTMOD := $(M)
 endif
 
+export KBUILD_CHECKSRC KBUILD_EXTMOD
 
-# kbuild supports saving output files in a separate directory.
-# To locate output files in a separate directory two syntaxes are supported.
-# In both cases the working directory must be the root of the kernel src.
-# 1) O=
-# Use "make O=dir/to/store/output/files/"
-#
-# 2) Set KBUILD_OUTPUT
-# Set the environment variable KBUILD_OUTPUT to point to the directory
-# where the output files shall be placed.
-# export KBUILD_OUTPUT=dir/to/store/output/files/
-# make
-#
-# The O= assignment takes precedence over the KBUILD_OUTPUT environment
-# variable.
+ifeq ($(abs_srctree),$(abs_objtree))
+        # building in the source tree
+	building_out_of_srctree :=
+else
+	building_out_of_srctree := 1
+endif
 
+srctree		:= $(abs_srctree)
+objtree		:= $(abs_objtree)
+src		:= $(srctree)
+obj		:= $(objtree)
 
-# 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),)
+VPATH		:= $(srctree)
 
-# OK, Make called in directory where kernel src resides
-# Do we want to locate output files in a separate directory?
-ifeq ("$(origin O)", "command line")
-  KBUILD_OUTPUT := $(O)
-endif
+export building_out_of_srctree srctree objtree VPATH
 
-# That's our default target when none is given on the command line
-PHONY := _all
-_all:
+# 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).
 
-ifneq ($(KBUILD_OUTPUT),)
-# Invoke a second make in the output directory, passing relevant variables
-# check that the output directory actually exists
-saved-output := $(KBUILD_OUTPUT)
-KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
-								&& /bin/pwd)
-$(if $(KBUILD_OUTPUT),, \
-     $(error failed to create output directory "$(saved-output)"))
+version_h := include/generated/version.h
 
-PHONY += $(MAKECMDGOALS) sub-make
+clean-targets := %clean mrproper cleandocs
+no-dot-config-targets := $(clean-targets) \
+			 cscope gtags TAGS tags help% %docs \
+			 $(version_h) kernelversion outputmakefile
+no-sync-config-targets := $(no-dot-config-targets) install %install \
+			   kernelrelease
 
-$(filter-out _all sub-make,$(MAKECMDGOALS)) _all: sub-make
-	@:
+config-build	:=
+mixed-build	:=
+need-config	:= 1
+may-sync-config	:= 1
 
-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))
+ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
+	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
+		need-config :=
+	endif
+endif
 
-# Leave processing to above invocation of make
-skip-makefile := 1
-endif # ifneq ($(KBUILD_OUTPUT),)
-endif # ifeq ($(KBUILD_SRC),)
+ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
+	ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
+		may-sync-config :=
+	endif
+endif
 
-# We process the rest of the Makefile if this is the final invocation of make
-ifeq ($(skip-makefile),)
+ifneq ($(KBUILD_EXTMOD),)
+	may-sync-config :=
+endif
 
-# If building an external module we do not care about the all: rule
-# but instead _all depend on modules
-PHONY += all
-_all: all
+ifeq ($(KBUILD_EXTMOD),)
+        ifneq ($(filter config %config,$(MAKECMDGOALS)),)
+		config-build := 1
+                ifneq ($(words $(MAKECMDGOALS)),1)
+			mixed-build := 1
+                endif
+        endif
+endif
 
-# CDPATH can have sideeffects; disable, since we do know where we want to cd to
-export CDPATH=
+# For "make -j clean all", "make -j mrproper defconfig all", etc.
+ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
+        ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
+		mixed-build := 1
+        endif
+endif
 
-srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
-objtree		:= $(CURDIR)
-src		:= $(srctree)
-obj		:= $(objtree)
+ifdef mixed-build
+# ===========================================================================
+# We're called with mixed targets (*config and build targets).
+# Handle them one by one.
 
-VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
+PHONY += $(MAKECMDGOALS) __build_one_by_one
 
-export srctree objtree VPATH
+$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
+	@:
+
+__build_one_by_one:
+	$(Q)set -e; \
+	for i in $(MAKECMDGOALS); do \
+		$(MAKE) -f $(srctree)/Makefile $$i; \
+	done
+
+else # !mixed-build
+
+include scripts/Kbuild.include
+
+# Read KERNELRELEASE from include/config/kernel.release (if it exists)
+KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
+KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
+export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
 
 # Cross compiling and selecting different set of gcc/bin-utils
 # ---------------------------------------------------------------------------
@@ -163,10 +331,6 @@ export srctree objtree VPATH
 # Alternatively CROSS_COMPILE can be set in the environment.
 # Default value for CROSS_COMPILE is not to prefix executables
 
-ifeq ($(ARCH),arm64)
-ARCH = arm
-endif
-
 ARCH            ?= sandbox
 CROSS_COMPILE   ?=
 
@@ -174,8 +338,20 @@ CROSS_COMPILE   ?=
 UTS_MACHINE := $(ARCH)
 SRCARCH 	:= $(ARCH)
 
+ifeq ($(ARCH),arm64)
+       SRCARCH := arm
+endif
+
+# Support ARCH=ppc for backward compatibility
+ifeq ($(ARCH),ppc)
+       SRCARCH := powerpc
+endif
+
 KCONFIG_CONFIG	?= .config
 
+# Default file for 'make defconfig'. This may be overridden by arch-Makefile.
+export KBUILD_DEFCONFIG := defconfig
+
 # SHELL used by kbuild
 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 	  else if [ -x /bin/bash ]; then echo /bin/bash; \
@@ -187,84 +363,12 @@ HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null)
 
 HOSTCC       = gcc
 HOSTCXX      = g++
-HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer $(HOST_LFS_CFLAGS)
-HOSTCXXFLAGS = -O2 $(HOST_LFS_CFLAGS)
-HOSTLDFLAGS = $(HOST_LFS_LDFLAGS)
-HOST_LOADLIBES = $(HOST_LFS_LIBS)
-
-# Decide whether to build built-in, modular, or both.
-# Normally, just do built-in.
-
-KBUILD_MODULES :=
-KBUILD_BUILTIN := 1
-
-#	If we have only "make modules", don't compile built-in objects.
-#	When we're building modules with modversions, we need to consider
-#	the built-in objects during the descend as well, in order to
-#	make sure the checksums are up to date before we record them.
-
-ifeq ($(MAKECMDGOALS),modules)
-  KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
-endif
-
-#	If we have "make <whatever> modules", compile modules
-#	in addition to whatever we do anyway.
-#	Just "make" or "make all" shall build modules as well
-
-ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
-  KBUILD_MODULES := 1
-endif
-
-export KBUILD_MODULES KBUILD_BUILTIN
-export KBUILD_CHECKSRC KBUILD_SRC
-
-# 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 ($(findstring s,$(MAKEFLAGS)),)
-  quiet=silent_
-endif
-
-export quiet Q KBUILD_VERBOSE
-
-
-# Look for make include files relative to root of kernel src
-MAKEFLAGS += --include-dir=$(srctree)
-
-# We need some generic definitions.
-include $(srctree)/scripts/Kbuild.include
-include $(srctree)/scripts/Makefile.lib
+KBUILD_HOSTCFLAGS   := -Wall -Wstrict-prototypes -O2 \
+		-fomit-frame-pointer $(HOST_LFS_CFLAGS) \
+		$(HOSTCFLAGS)
+KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
+KBUILD_HOSTLDFLAGS  := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
+KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
 
 # Make variables (CC, etc...)
 
@@ -286,6 +390,7 @@ KALLSYMS	= scripts/kallsyms
 PERL		= perl
 PYTHON3		= python3
 CHECK		= sparse
+BASH		= bash
 
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
 CFLAGS_KERNEL	=
@@ -301,17 +406,18 @@ export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_ve
 # Use LINUXINCLUDE when you must reference the include/ directory.
 # Needed to be compatible with the O= option
 LINUXINCLUDE    := -Iinclude -I$(srctree)/dts/include \
-                   $(if $(KBUILD_SRC), -I$(srctree)/include) \
-		   -I$(srctree)/arch/$(ARCH)/include \
-		   -I$(objtree)/arch/$(ARCH)/include \
+                   $(if $(building_out_of_srctree), -I$(srctree)/include) \
+		   -I$(srctree)/arch/$(SRCARCH)/include \
+		   -I$(objtree)/arch/$(SRCARCH)/include \
                    -include $(srctree)/include/linux/kconfig.h
 
-CPPFLAGS        := -D__KERNEL__ -D__BAREBOX__ $(LINUXINCLUDE) -fno-builtin -ffreestanding
+KBUILD_CPPFLAGS        := -D__KERNEL__ -D__BAREBOX__ $(LINUXINCLUDE) -fno-builtin -ffreestanding
 
-CFLAGS          := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-                   -Werror-implicit-function-declaration \
-                   -fno-strict-aliasing -fno-common -Os -pipe -Wmissing-prototypes
-AFLAGS          := -D__ASSEMBLY__
+KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
+		   -fno-strict-aliasing -fno-common \
+                   -Werror=implicit-function-declaration -Werror=implicit-int \
+                   -Os -pipe -Wmissing-prototypes
+KBUILD_AFLAGS          := -D__ASSEMBLY__
 
 LDFLAGS_barebox	:= -Map barebox.map
 
@@ -319,19 +425,15 @@ LDFLAGS_barebox	:= -Map barebox.map
 LDFLAGS_barebox += $(call ld-option, --no-dynamic-linker)
 LDFLAGS_pbl += $(call ld-option, --no-dynamic-linker)
 
-# Read KERNELRELEASE from include/config/kernel.release (if it exists)
-KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
-KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
-
-export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
-export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
+export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL PYTHON3 UTS_MACHINE
 export LEX YACC
-export HOSTCXX HOSTCXXFLAGS HOSTLDFLAGS HOST_LOADLIBES LDFLAGS_MODULE CHECK CHECKFLAGS
+export HOSTCXX CHECK CHECKFLAGS
+export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
 
-export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
-export CFLAGS CFLAGS_KERNEL
-export AFLAGS AFLAGS_KERNEL
+export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
+export KBUILD_CFLAGS CFLAGS_KERNEL
+export KBUILD_AFLAGS AFLAGS_KERNEL
 export LDFLAGS_barebox
 export LDFLAGS_pbl
 
@@ -339,78 +441,45 @@ export CFLAGS_UBSAN
 
 # 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_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
+export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
+			  -name CVS -o -name .pc -o -name .hg -o -name .git \) \
+			  -prune -o
+export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
+			 --exclude CVS --exclude .pc --exclude .hg --exclude .git
 
 # ===========================================================================
 # Rules shared between *config targets and build targets
 
-# Basic helpers built in scripts/
+# Basic helpers built in scripts/basic/
 PHONY += scripts_basic
 scripts_basic:
 	$(Q)$(MAKE) $(build)=scripts/basic
 
-# To avoid any implicit rule to kick in, define an empty command.
-scripts/basic/%: scripts_basic ;
-
 PHONY += outputmakefile
+# Before starting out-of-tree build, make sure the source tree is clean.
 # outputmakefile generates a Makefile in the output directory, if using a
 # separate output directory. This allows convenient use of make in the
 # output directory.
+# At the same time when output Makefile generated, generate .gitignore to
+# ignore whole output directory
 outputmakefile:
-ifneq ($(KBUILD_SRC),)
-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
-	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
-endif
-
-# To make sure we do not include .config for any of the *config targets
-# catch them early, and hand them over to scripts/kconfig/Makefile
-# It is allowed to specify more targets when calling make, including
-# mixing *config targets and build targets.
-# For example 'make oldconfig all'.
-# Detect when mixed targets is specified, and make a second invocation
-# of make so .config is not included in this case either (for *config).
-
-no-dot-config-targets := clean mrproper distclean \
-			 cscope TAGS tags help %docs check% \
-			 include/generated/version.h headers_% \
-			 kernelrelease kernelversion
-
-config-targets := 0
-mixed-targets  := 0
-dot-config     := 1
-
-ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
-	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
-		dot-config := 0
-	endif
-endif
-
-ifneq ($(filter config %config,$(MAKECMDGOALS)),)
-        config-targets := 1
-	ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
-		mixed-targets := 1
-	endif
+ifdef building_out_of_srctree
+	$(Q)if [ -f $(srctree)/.config -o \
+		 -d $(srctree)/include/config -o \
+		 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
+		echo >&2 "***"; \
+		echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \
+		echo >&2 "*** in $(abs_srctree)";\
+		echo >&2 "***"; \
+		false; \
+	fi
+	$(Q)ln -fsn $(srctree) source
+	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
+	$(Q)test -e .gitignore || \
+	{ echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
 endif
 
-ifeq ($(mixed-targets),1)
-# ===========================================================================
-# We're called with mixed targets (*config and build targets).
-# Handle them one by one.
-
-PHONY += $(MAKECMDGOALS) __build_one_by_one
-
-$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
-	@:
-
-__build_one_by_one:
-	$(Q)set -e; \
-	for i in $(MAKECMDGOALS); do \
-		$(MAKE) -f $(srctree)/Makefile $$i; \
-	done
-
-else
-ifeq ($(config-targets),1)
+ifdef config-build
 # ===========================================================================
 # *config targets only - make sure prerequisites are updated, and descend
 # in scripts/kconfig to make the *config target
@@ -418,33 +487,68 @@ ifeq ($(config-targets),1)
 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
 # KBUILD_DEFCONFIG may point out an alternative default configuration
 # used for 'make defconfig'
-include $(srctree)/arch/$(ARCH)/Makefile
+include $(srctree)/arch/$(SRCARCH)/Makefile
 export KBUILD_DEFCONFIG
 
-config: scripts_basic outputmakefile FORCE
+config: outputmakefile scripts_basic FORCE
 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
 
-%config: scripts_basic outputmakefile FORCE
+%config: outputmakefile scripts_basic FORCE
 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
 
-else
+else #!config-build
 # ===========================================================================
 # Build targets only - this includes barebox, arch specific targets, clean
 # targets and others. In general all targets except *config targets.
 
-# Additional helpers built in scripts/
-# Carefully list dependencies so we do not try to build scripts twice
-# in parallel
-PHONY += scripts
-scripts: scripts_basic
-	$(Q)$(MAKE) $(build)=$(@)
+# If building an external module we do not care about the all: rule
+# but instead _all depend on modules
+PHONY += all
+ifeq ($(KBUILD_EXTMOD),)
+_all: all
+else
+_all: modules
+endif
+
+# Decide whether to build built-in, modular, or both.
+# Normally, just do built-in.
+
+KBUILD_MODULES :=
+KBUILD_BUILTIN := 1
+
+# If we have only "make modules", don't compile built-in objects.
+# When we're building modules with modversions, we need to consider
+# the built-in objects during the descend as well, in order to
+# make sure the checksums are up to date before we record them.
+
+ifeq ($(MAKECMDGOALS),modules)
+  KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
+endif
+
+# If we have "make <whatever> modules", compile modules
+# in addition to whatever we do anyway.
+# Just "make" or "make all" shall build modules as well
+
+ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
+  KBUILD_MODULES := 1
+endif
+
+export KBUILD_MODULES KBUILD_BUILTIN
+
+ifdef need-config
+include include/config/auto.conf
+endif
+
+# We need some generic definitions.
+include $(srctree)/scripts/Makefile.lib
 
 # Objects we will link into barebox / subdirs we need to visit
 common-y		:= common/ drivers/ commands/ lib/ crypto/ net/ fs/ firmware/
 
-ifeq ($(dot-config),1)
-include include/config/auto.conf
+include $(srctree)/arch/$(SRCARCH)/Makefile
 
+ifdef need-config
+ifdef may-sync-config
 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if
 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile
 # because some architectures define CROSS_COMPILE there.
@@ -465,39 +569,54 @@ $(KCONFIG_CONFIG):
 #
 # This exploits the 'multi-target pattern rule' trick.
 # The syncconfig should be executed only once to make all the targets.
-%/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG)
+# (Note: use the grouped target '&:' when we bump to GNU Make 4.3)
+%/auto.conf %/auto.conf.cmd: $(KCONFIG_CONFIG)
 	$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
-endif # $(dot-config)
-
-include $(srctree)/arch/$(ARCH)/Makefile
-
-CFLAGS		+= -ggdb3
+else # !may-sync-config
+# External modules and some install targets need include/generated/autoconf.h
+# and include/config/auto.conf but do not care if they are up-to-date.
+# Use auto.conf to trigger the test
+PHONY += include/config/auto.conf
+
+include/config/auto.conf:
+	$(Q)test -e include/generated/autoconf.h -a -e $@ || (		\
+	echo >&2;							\
+	echo >&2 "  ERROR: Kernel configuration is invalid.";		\
+	echo >&2 "         include/generated/autoconf.h or $@ are missing.";\
+	echo >&2 "         Run 'make oldconfig && make prepare' on kernel src to fix it.";	\
+	echo >&2 ;							\
+	/bin/false)
+
+endif # may-sync-config
+endif # need-config
+
+KBUILD_CFLAGS		+= -ggdb3
 
 # Force gcc to behave correct even for buggy distributions
-CFLAGS          += $(call cc-option, -fno-stack-protector)
+KBUILD_CFLAGS          += $(call cc-option, -fno-stack-protector)
 
 # This warning generated too much noise in a regular build.
 # Use make W=1 to enable this warning (see scripts/Makefile.build)
-CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
+KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
 
-CFLAGS += $(call cc-disable-warning, trampolines)
+KBUILD_CFLAGS += $(call cc-disable-warning, trampolines)
 
-CFLAGS += $(call cc-option, -fno-delete-null-pointer-checks,)
+KBUILD_CFLAGS += $(call cc-option, -fno-delete-null-pointer-checks,)
 
-CFLAGS   += $(call cc-disable-warning, address-of-packed-member)
+KBUILD_CFLAGS   += $(call cc-disable-warning, address-of-packed-member)
 
 # arch Makefile may override CC so keep this after arch Makefile is included
 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 
 # warn about C99 declaration after statement
-CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
 
 # disable pointer signed / unsigned warnings in gcc 4.0
-CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
 
 # change __FILE__ to the relative path from the srctree
-CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
+KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
 
 include $(srctree)/scripts/Makefile.ubsan
 
@@ -511,7 +630,7 @@ export KBUILD_IMAGE ?= barebox.bin
 export KBUILD_BINARY ?= barebox.bin
 # KBUILD_IMAGE and _BINARY may be overruled on the command line or
 # set in the environment.
-# Also any assignments in arch/$(ARCH)/Makefile take precedence over
+# Also any assignments in arch/$(SRCARCH)/Makefile take precedence over
 # the default value.
 
 barebox-flash-image: $(KBUILD_IMAGE) FORCE
@@ -565,7 +684,7 @@ export DEFAULT_COMPRESSION_SUFFIX
 # ---------------------------------------------------------------------------
 # barebox is built from the objects selected by $(barebox-init) and
 # $(barebox-main). Most are built-in.o files from top-level directories
-# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
+# in the kernel tree, others are specified in arch/$(SRCARCH)/Makefile.
 # Ordering when linking is important, and $(barebox-init) must be first.
 #
 # FIXME: This picture is wrong for barebox. We have no init, driver, mm
@@ -592,9 +711,9 @@ export BAREBOX_PBL_OBJS := $(pbl-common-y)
 BAREBOX_LDS    := $(lds-y)
 
 # Rule to link barebox
-# May be overridden by arch/$(ARCH)/Makefile
+# May be overridden by arch/$(SRCARCH)/Makefile
 quiet_cmd_barebox__ ?= LD      $@
-      cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
+      cmd_barebox__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_barebox) -o $@ \
       -T $(BAREBOX_LDS)                         \
       --start-group $(BAREBOX_OBJS) --end-group                  \
       $(filter-out $(BAREBOX_LDS) $(BAREBOX_OBJS) FORCE ,$^)
@@ -612,28 +731,18 @@ quiet_cmd_barebox_version = GEN     .version
 	$(MAKE) $(build)=common
 
 # Generate System.map
-quiet_cmd_sysmap = SYSMAP
-      cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
+quiet_cmd_sysmap = SYSMAP  System.map
+      cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap $@ System.map
 
 # Link of barebox
 # If CONFIG_KALLSYMS is set .version is already updated
 # Generate System.map and verify that the content is consistent
 # Use + in front of the barebox_version rule to silent warning with make -j2
-# First command is ':' to allow us to use + in front of the rule
 define rule_barebox__
-	:
 	$(if $(CONFIG_KALLSYMS),,+$(call cmd,barebox_version))
 	$(call cmd,barebox__)
-
 	$(Q)echo 'cmd_$@ := $(cmd_barebox__)' > $(@D)/.$(@F).cmd
-
-	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
-	  echo '  $($(quiet)cmd_sysmap)  System.map' &&)                     \
-	$(cmd_sysmap) $@ System.map;                                         \
-	if [ $$? -ne 0 ]; then                                               \
-		rm -f $@;                                                    \
-		false;                                                       \
-	fi;
+	$(call cmd,sysmap)
 endef
 
 ifdef CONFIG_KALLSYMS
@@ -674,10 +783,8 @@ endef
 
 # Update barebox version before link
 # Use + in front of this rule to silent warning about make -j1
-# First command is ':' to allow us to use + in front of this rule
 cmd_ksym_ld = $(cmd_barebox__)
 define rule_ksym_ld
-	:
 	+$(call cmd,barebox_version)
 	$(call cmd,barebox__)
 	$(Q)echo 'cmd_$@ := $(cmd_barebox__)' > $(@D)/.$(@F).cmd
@@ -733,7 +840,7 @@ UIMAGE_BASE ?= $(shell printf "0x%08x" $$(($(CONFIG_TEXT_BASE) - 0x200000)))
 # For development provide a target which makes barebox loadable by an
 # unmodified u-boot
 quiet_cmd_barebox_mkimage = MKIMAGE $@
-      cmd_barebox_mkimage = $(srctree)/scripts/mkimage -A $(ARCH) -T firmware -C none \
+      cmd_barebox_mkimage = $(srctree)/scripts/mkimage -A $(SRCARCH) -T firmware -C none \
        -O barebox -a $(UIMAGE_BASE) -e $(UIMAGE_BASE) \
        -n "barebox $(KERNELRELEASE)" -d $< $@
 
@@ -797,6 +904,13 @@ include/config/kernel.release: FORCE
 	$(Q)rm -f $@
 	$(Q)echo $(KERNELVERSION)$(localversion) > $@
 
+# Additional helpers built in scripts/
+# Carefully list dependencies so we do not try to build scripts twice
+# in parallel
+PHONY += scripts
+scripts: scripts_basic
+	$(Q)$(MAKE) $(build)=$(@)
+
 # 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.
@@ -804,47 +918,25 @@ include/config/kernel.release: FORCE
 # version.h and scripts_basic is processed / created.
 
 # Listed in dependency order
-PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
-
-# prepare-all is deprecated, use prepare as valid replacement
-PHONY += prepare-all
-
-# 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 $(srctree)
-prepare3: include/config/kernel.release
-ifneq ($(KBUILD_SRC),)
-	@echo '  Using $(srctree) as source for barebox'
-	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
-		echo "  $(srctree) is not clean, please run 'make mrproper'";\
-		echo "  in the '$(srctree)' directory.";\
-		false; \
-	fi;
-endif
+PHONY += prepare archprepare prepare0
 
-# prepare2 creates a makefile if using a separate output directory
-prepare2: prepare3 outputmakefile
-
-prepare1: prepare2 include/generated/version.h include/generated/utsrelease.h \
-                   include/config.h
+archprepare: outputmakefile scripts_basic include/config/kernel.release \
+	$(version_h) include/generated/utsrelease.h include/config.h
 
+prepare0: archprepare FORCE
 ifneq ($(KBUILD_MODULES),)
 	$(Q)mkdir -p $(MODVERDIR)
 	$(Q)rm -f $(MODVERDIR)/*
 endif
-
-archprepare: prepare1 scripts_basic
-
-prepare0: archprepare FORCE
 	$(Q)$(MAKE) $(build)=.
 
 # All the preparing..
-prepare prepare-all: prepare0
+prepare: prepare0
 
 # Leave this as default for preprocessing barebox.lds.S, which is now
-# done in arch/$(ARCH)/kernel/Makefile
+# done in arch/$(SRCARCH)/kernel/Makefile
 
-export CPPFLAGS_barebox.lds += -C -U$(ARCH)
+export CPPFLAGS_barebox.lds += -C -U$(SRCARCH)
 
 define symlink-config-h
 	if [ -f $(srctree)/$(BOARD)/config.h ]; then		\
@@ -873,16 +965,16 @@ define filechk_utsrelease.h
 	  echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \
 	  exit 1;                                                         \
 	fi;                                                               \
-	(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
+	echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"
 endef
 
 define filechk_version.h
-	(echo \#define LINUX_VERSION_CODE $(shell                             \
-	expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL));     \
-	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
+	echo \#define LINUX_VERSION_CODE $(shell                         \
+	expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
+	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'
 endef
 
-include/generated/version.h: $(srctree)/Makefile FORCE
+include/generated/version.h: FORCE
 	$(call filechk,version.h)
 
 include/generated/utsrelease.h: include/config/kernel.release FORCE
@@ -1043,7 +1135,7 @@ rpm: include/config/kernel.release FORCE
 # Brief documentation of the typical targets used
 # ---------------------------------------------------------------------------
 
-boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
+boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
 boards := $(sort $(notdir $(boards)))
 
 help:
@@ -1070,13 +1162,10 @@ help:
 	@echo  'Static analysers'
 	@echo  '  checkstack      - Generate a list of stack hogs'
 	@echo  '  namespacecheck  - Name space analysis on compiled kernel'
-	@if [ -r include/asm-$(ARCH)/Kbuild ]; then \
-	 echo  '  headers_check   - Sanity check on exported headers'; \
-	 fi
 	@echo  ''
-	@echo  'Architecture specific targets ($(ARCH)):'
+	@echo  'Architecture specific targets ($(SRCARCH)):'
 	@$(if $(archhelp),$(archhelp),\
-		echo '  No architecture specific help defined for $(ARCH)')
+		echo '  No architecture specific help defined for $(SRCARCH)')
 	@echo  ''
 	@$(if $(boards), \
 		$(foreach b, $(boards), \
@@ -1095,9 +1184,9 @@ help:
 # Generate tags for editors
 # ---------------------------------------------------------------------------
 quiet_cmd_tags = GEN     $@
-      cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
+      cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@
 
-tags TAGS cscope: FORCE
+tags TAGS cscope gtags: FORCE
 	$(call cmd,tags)
 
 SPHINXBUILD   = sphinx-build
@@ -1109,9 +1198,6 @@ docs: FORCE
 	@$(SPHINXBUILD) -b html -d $(objtree)/doctrees $(srctree)/Documentation \
 		$(objtree)/Documentation/html
 
-endif #ifeq ($(config-targets),1)
-endif #ifeq ($(mixed-targets),1)
-
 # Single targets
 # ---------------------------------------------------------------------------
 # Single targets are compatible with:
@@ -1158,8 +1244,8 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files))
       cmd_rmfiles = rm -f $(rm-files)
 
 
-a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
-	  $(NOSTDINC_FLAGS) $(CPPFLAGS) \
+a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
+	  $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
 	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
 
 quiet_cmd_as_o_S = AS      $@
@@ -1175,14 +1261,13 @@ ifneq ($(cmd_files),)
   include $(cmd_files)
 endif
 
-endif	# skip-makefile
+endif # config-build
+endif # mixed-build
+endif # need-sub-make
 
 PHONY += FORCE
 FORCE:
 
-# Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes.
-Makefile: ;
-
 # Declare the contents of the PHONY variable as phony.  We keep that
 # information in a variable so we can use it in if_changed and friends.
 .PHONY: $(PHONY)
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 29fd8e276c..6c7373c206 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -1,19 +1,19 @@
 KBUILD_DEFCONFIG := qemu_virt64_defconfig
 
-CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
+KBUILD_CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
 ifeq ($(CONFIG_CPU_V8),y)
-CPPFLAGS	+=$(call cc-option,-maarch64,)
+KBUILD_CPPFLAGS	+=$(call cc-option,-maarch64,)
 else
-CPPFLAGS	+=$(call cc-option,-marm,)
+KBUILD_CPPFLAGS	+=$(call cc-option,-marm,)
 endif
 
 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
-CPPFLAGS	+= -mbig-endian
+KBUILD_CPPFLAGS	+= -mbig-endian
 AS		+= -EB
 LD		+= -EB
 else
-CPPFLAGS	+= -mlittle-endian
+KBUILD_CPPFLAGS	+= -mlittle-endian
 AS		+= -EL
 LD		+= -EL
 endif
@@ -23,14 +23,14 @@ endif
 # conservative and instruct the compiler not to generate any unaligned
 # accesses
 ifneq ($(CONFIG_CPU_V8),y)
-CFLAGS += -mno-unaligned-access
+KBUILD_CFLAGS += -mno-unaligned-access
 else
-CFLAGS += -mstrict-align
+KBUILD_CFLAGS += -mstrict-align
 endif
 
 # Prevent use of floating point and Advanced SIMD registers.
 ifeq ($(CONFIG_CPU_V8),y)
-CFLAGS += -mgeneral-regs-only
+KBUILD_CFLAGS += -mgeneral-regs-only
 endif
 
 # This selects which instruction set is used.
@@ -70,12 +70,12 @@ AFLAGS_THUMB2	:=$(CFLAGS_THUMB2) -Wa$(comma)-mthumb
 endif
 
 ifeq ($(CONFIG_CPU_V8), y)
-CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y)
-AFLAGS   += -include asm/unified.h
+KBUILD_CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y)
+KBUILD_AFLAGS   += -include asm/unified.h
 export S64 = _64
 else
-CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float $(CFLAGS_THUMB2)
-AFLAGS   += -include asm/unified.h -msoft-float $(AFLAGS_THUMB2)
+KBUILD_CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float $(CFLAGS_THUMB2)
+KBUILD_AFLAGS   += -include asm/unified.h -msoft-float $(AFLAGS_THUMB2)
 endif
 
 # Machine directory name.  This list is sorted alphanumerically
@@ -127,23 +127,19 @@ board-$(CONFIG_MACH_TINY6410)			+= friendlyarm-tiny6410
 
 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 TEXT_BASE = $(CONFIG_TEXT_BASE)
 
-CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
+KBUILD_CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
 
 # Add cleanup flags
-CPPFLAGS += -fdata-sections -ffunction-sections
+KBUILD_CPPFLAGS += -fdata-sections -ffunction-sections
 LDFLAGS_barebox += --gc-sections
 LDFLAGS_pbl += --gc-sections
 
 # early code often runs at addresses we are not linked at
-CPPFLAGS += -fPIE
+KBUILD_CPPFLAGS += -fPIE
 
 ifdef CONFIG_RELOCATABLE
 LDFLAGS_barebox += -pie
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index 67ae9e701b..bff825e58a 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -7,4 +7,4 @@
 include/generated/mach-types.h: $(src)/gen-mach-types $(src)/mach-types
 	$(Q)$(kecho) '  Generating $@'
 	$(Q)mkdir -p $(dir $@)
-	$(Q)$(AWK) -f $^ > $@ || { rm -f $@; /bin/false; }
+	$(Q)$(AWK) -f $^ > $@
diff --git a/arch/kvx/Makefile b/arch/kvx/Makefile
index 81040f4e69..c97cff3456 100644
--- a/arch/kvx/Makefile
+++ b/arch/kvx/Makefile
@@ -1,6 +1,6 @@
 KBUILD_DEFCONFIG := generic_defconfig
 
-CPPFLAGS += -fno-strict-aliasing
+KBUILD_CPPFLAGS += -fno-strict-aliasing
 
 board-$(CONFIG_GENERIC) := generic
 
@@ -13,12 +13,12 @@ endif
 DEFAULT_CFLAGS := -nostdlib -fno-builtin -fstrict-align -g
 DEFAULT_CFLAGS += -DTEXT_BASE=$(CONFIG_TEXT_BASE)
 
-LIBGCC_PATH = $(dir $(shell $(CC) $(CFLAGS) --print-libgcc-file-name))
+LIBGCC_PATH = $(dir $(shell $(CC) $(KBUILD_CFLAGS) --print-libgcc-file-name))
 
-CFLAGS += $(DEFAULT_CFLAGS)
-AFLAGS += $(DEFAULT_CFLAGS)
+KBUILD_CFLAGS += $(DEFAULT_CFLAGS)
+KBUILD_AFLAGS += $(DEFAULT_CFLAGS)
 
-LDFLAGS += -m elf64kvx
+KBUILD_LDFLAGS += -m elf64kvx
 
 archprepare: maketools
 
@@ -30,7 +30,7 @@ common-$(CONFIG_OFTREE) += arch/kvx/dts/
 
 lds-y += arch/kvx/cpu/barebox.lds
 
-cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
+cmd_barebox__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_barebox) -o $@ \
       -T $(BAREBOX_LDS) \
       --start-group $(BAREBOX_OBJS) --end-group \
       -L$(LIBGCC_PATH) -lgcc \
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index ee3364d27a..5604a0a10d 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -11,7 +11,7 @@ else
 64bit-emul		= elf64btsmip
 endif
 
-CPPFLAGS += -D__MIPS__ -fno-strict-aliasing -fno-merge-constants
+KBUILD_CPPFLAGS += -D__MIPS__ -fno-strict-aliasing -fno-merge-constants
 
 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
 cflags-y += -Wall -Wstrict-prototypes \
@@ -34,17 +34,17 @@ predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
 
 ifdef CONFIG_CPU_BIG_ENDIAN
 cflags-y += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
-ldflags-y += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB )
+mips-ldflags-y += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB )
 endif
 
 ifdef CONFIG_CPU_LITTLE_ENDIAN
 cflags-y += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
-ldflags-y += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL )
+mips-ldflags-y += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL )
 endif
 
-LDFLAGS += $(ldflags-y) -m $(ld-emul)
-LDFLAGS_barebox += $(ldflags-y)
-LDFLAGS_pbl += $(ldflags-y)
+KBUILD_LDFLAGS += $(mips-ldflags-y) -m $(ld-emul)
+LDFLAGS_barebox += $(mips-ldflags-y)
+LDFLAGS_pbl += $(mips-ldflags-y)
 
 #
 # CPU-dependent compiler/assembler options for optimization.
@@ -55,11 +55,11 @@ cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS
 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) -Wa,-mips64r2 -Wa,--trap
 cflags-$(CONFIG_CPU_GS232)     += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) -Wa,-mips32r2 -Wa,--trap
 
-CPPFLAGS += -DTEXT_BASE=$(CONFIG_TEXT_BASE)
+KBUILD_CPPFLAGS += -DTEXT_BASE=$(CONFIG_TEXT_BASE)
 
 ifndef CONFIG_MODULES
 # Add cleanup flags
-CPPFLAGS += -fdata-sections -ffunction-sections
+KBUILD_CPPFLAGS += -fdata-sections -ffunction-sections
 LDFLAGS_barebox += -static --gc-sections --emit-relocs
 endif
 
@@ -82,22 +82,7 @@ machine-$(CONFIG_MACH_MIPS_LOONGSON)	:= loongson
 machine-$(CONFIG_MACH_MIPS_XBURST)	:= xburst
 machdirs := $(patsubst %,arch/mips/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
-
-ifeq ($(incdir-y),)
-incdir-y := $(machine-y)
-endif
-INCDIR   := arch-$(incdir-y)
-
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += -I$(BOARD)/include
-else
-CPPFLAGS += -I$(srctree)/$(BOARD)/include
-endif
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 ifneq ($(machine-y),)
 MACH  := arch/mips/mach-$(machine-y)/
@@ -105,19 +90,17 @@ else
 MACH  :=
 endif
 
-common-y += $(BOARD)
-
 common-y += $(MACH)
 common-y += arch/mips/lib/
 common-y += arch/mips/boot/
 common-y += arch/mips/boards/
 
-CPPFLAGS += $(cflags-y)
-CFLAGS += $(cflags-y)
+KBUILD_CPPFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
 
 lds-$(CONFIG_GENERIC_LINKER_SCRIPT)   := arch/mips/lib/barebox.lds
 
-cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
+cmd_barebox__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_barebox) -o $@ \
       -T $(BAREBOX_LDS)                         \
       --start-group $(BAREBOX_OBJS) --end-group                  \
       $(filter-out $(BAREBOX_LDS) $(BAREBOX_OBJS) FORCE ,$^);	\
diff --git a/arch/mips/boards/loongson-ls1b/include/board/debug_ll.h b/arch/mips/boards/loongson-ls1b/include/board/debug_ll.h
deleted file mode 100644
index 05420f73a1..0000000000
--- a/arch/mips/boards/loongson-ls1b/include/board/debug_ll.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
- */
-
-/** @file
- *  This File contains declaration for early output support
- */
-#ifndef __LOONGSON_TECH_LS1B_DEBUG_LL_H__
-#define __LOONGSON_TECH_LS1B_DEBUG_LL_H__
-
-#include <asm/addrspace.h>
-#include <mach/loongson1.h>
-
-#define DEBUG_LL_UART_ADDR	KSEG1ADDR(LS1X_UART2_BASE)
-#define DEBUG_LL_UART_SHIFT	0
-
-#define DEBUG_LL_UART_CLK   (83000000 / 16)
-#define DEBUG_LL_UART_BPS   CONFIG_BAUDRATE
-#define DEBUG_LL_UART_DIVISOR   (DEBUG_LL_UART_CLK / DEBUG_LL_UART_BPS)
-
-#endif /* __LOONGSON_TECH_LS1B_DEBUG_LL_H__ */
diff --git a/arch/mips/boards/netgear-wg102/include/board/debug_ll.h b/arch/mips/boards/netgear-wg102/include/board/debug_ll.h
deleted file mode 100644
index cc3b1d74b0..0000000000
--- a/arch/mips/boards/netgear-wg102/include/board/debug_ll.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2013 Oleksij Rempel <linux@rempel-privat.de>
- */
-
-/** @file
- *  This File contains declaration for early output support
- */
-#ifndef __NETGEAR_WG102_DEBUG_LL_H__
-#define __NETGEAR_WG102_DEBUG_LL_H__
-
-#include <mach/ar2312_regs.h>
-
-#define DEBUG_LL_UART_ADDR	KSEG1ADDR(AR2312_UART0)
-#define DEBUG_LL_UART_SHIFT	AR2312_UART_SHIFT
-
-#define DEBUG_LL_UART_CLK   (45000000 / 16)
-#define DEBUG_LL_UART_BPS   CONFIG_BAUDRATE
-#define DEBUG_LL_UART_DIVISOR   (DEBUG_LL_UART_CLK / DEBUG_LL_UART_BPS)
-
-#endif /* __NETGEAR_WG102_DEBUG_LL_H__ */
diff --git a/arch/mips/boards/qemu-malta/include/board/debug_ll.h b/arch/mips/boards/qemu-malta/include/board/debug_ll.h
deleted file mode 100644
index 5b112b8ae2..0000000000
--- a/arch/mips/boards/qemu-malta/include/board/debug_ll.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
- */
-
-#ifndef __INCLUDE_BOARD_DEBUG_LL_QEMU_MALTA_H__
-#define __INCLUDE_BOARD_DEBUG_LL_QEMU_MALTA_H__
-
-#include <mach/hardware.h>
-
-#define DEBUG_LL_UART_ADDR	MALTA_PIIX4_UART0
-#define DEBUG_LL_UART_SHIFT	0
-
-#define DEBUG_LL_UART_CLK       1843200
-#define DEBUG_LL_UART_BPS       CONFIG_BAUDRATE
-#define DEBUG_LL_UART_DIVISOR   (DEBUG_LL_UART_CLK / DEBUG_LL_UART_BPS)
-
-#endif /* __INCLUDE_BOARD_DEBUG_LL_QEMU_MALTA_H__ */
diff --git a/arch/mips/pbl/Makefile b/arch/mips/pbl/Makefile
index 8f9e9fe593..535bb4bf55 100644
--- a/arch/mips/pbl/Makefile
+++ b/arch/mips/pbl/Makefile
@@ -29,7 +29,7 @@ zbarebox-common := $(BAREBOX_PBL_OBJS) $(obj)/$(piggy_o)
 zbarebox-lds := $(obj)/zbarebox.lds
 
 quiet_cmd_zbarebox__ ?= LD      $@
-      cmd_zbarebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_zbarebox) -o $@ \
+      cmd_zbarebox__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_zbarebox) -o $@ \
       -T $(zbarebox-lds)                                           \
       --start-group $(zbarebox-common) --end-group                 \
       $(filter-out $(zbarebox-lds) $(zbarebox-common) FORCE ,$^)
diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index 0dff0bed35..ef283f4143 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -1,6 +1,6 @@
 KBUILD_DEFCONFIG := generic_defconfig
 
-CPPFLAGS += -fno-strict-aliasing -mno-hw-mul
+KBUILD_CPPFLAGS += -fno-strict-aliasing -mno-hw-mul
 
 board-$(CONFIG_GENERIC) := generic
 
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index 5394afb7f0..72d7fa3d53 100644
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -1,6 +1,6 @@
 KBUILD_DEFCONFIG := generic_defconfig
 
-CPPFLAGS += -D__OR1K__ -ffixed-r10 -mhard-mul -mhard-div
+KBUILD_CPPFLAGS += -D__OR1K__ -ffixed-r10 -mhard-mul -mhard-div
 
 board-$(CONFIG_GENERIC) := generic
 
diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild
new file mode 100644
index 0000000000..503ce631c0
--- /dev/null
+++ b/arch/powerpc/Kbuild
@@ -0,0 +1,2 @@
+obj-$(CONFIG_ARCH_MPC85XX) += cpu-85xx/
+obj-y += lib/
diff --git a/arch/ppc/Kconfig b/arch/powerpc/Kconfig
index 798f342fa4..90ec7b1702 100644
--- a/arch/ppc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -18,5 +18,5 @@ config ARCH_MPC85XX
 	bool "Freescale MPC85xx"
 endchoice
 
-source "arch/ppc/mach-mpc5xxx/Kconfig"
-source "arch/ppc/mach-mpc85xx/Kconfig"
+source "arch/powerpc/mach-mpc5xxx/Kconfig"
+source "arch/powerpc/mach-mpc85xx/Kconfig"
diff --git a/arch/ppc/Makefile b/arch/powerpc/Makefile
index 8b0c0b4758..aa76260496 100644
--- a/arch/ppc/Makefile
+++ b/arch/powerpc/Makefile
@@ -1,18 +1,18 @@
 KBUILD_DEFCONFIG := p2020rdb_defconfig
 
-CPPFLAGS += -ffixed-r14 -m32 	\
-	-meabi -D __PPC__ -D CONFIG_PPC \
+KBUILD_CPPFLAGS += -ffixed-r14 -m32 	\
+	-meabi -D __PPC__ \
 	-fno-strict-aliasing
 
-CPPFLAGS += $(call cc-option,-mno-spe)
-CPPFLAGS += $(call cc-option,-mspe=no)
+KBUILD_CPPFLAGS += $(call cc-option,-mno-spe)
+KBUILD_CPPFLAGS += $(call cc-option,-mspe=no)
 
 ifdef CONFIG_RELOCATABLE
-CPPFLAGS += -fPIC -mrelocatable
+KBUILD_CPPFLAGS += -fPIC -mrelocatable
 endif
 
 ifdef CONFIG_MPC85xx
-CPPFLAGS += -Wa,-me500x2 -msoft-float -mno-string
+KBUILD_CPPFLAGS += -Wa,-me500x2 -msoft-float -mno-string
 endif
 
 board-$(CONFIG_MACH_PHYCORE_MPC5200B_TINY)	:= pcm030
@@ -24,25 +24,19 @@ board-$(CONFIG_DA923RC)				:= owc-da923rc
 machine-$(CONFIG_ARCH_MPC5200)			:= mpc5xxx
 machine-$(CONFIG_ARCH_MPC85XX)			:= mpc85xx
 
-cpu-$(CONFIG_ARCH_MPC85XX)			:= 85xx
-
 TEXT_BASE = $(CONFIG_TEXT_BASE)
 
-CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
+KBUILD_CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
 
 # Add cleanup flags
 ifndef CONFIG_MODULES
-CPPFLAGS += -fdata-sections -ffunction-sections
+KBUILD_CPPFLAGS += -fdata-sections -ffunction-sections
 LDFLAGS_barebox += --gc-sections
 endif
 
-machdirs := $(patsubst %,arch/ppc/mach-%/,$(machine-y))
+machdirs := $(patsubst %,arch/powerpc/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 archprepare: maketools
 
@@ -50,25 +44,18 @@ PHONY += maketools
 
 
 ifneq ($(board-y),)
-BOARD  := arch/ppc/boards/$(board-y)/
+BOARD  := arch/powerpc/boards/$(board-y)/
 else
 BOARD  :=
 endif
 
 ifneq ($(machine-y),)
-MACH  := arch/ppc/mach-$(machine-y)/
+MACH  := arch/powerpc/mach-$(machine-y)/
 else
 MACH  :=
 endif
 
-ifneq ($(cpu-y),)
-CPU  := arch/ppc/cpu-$(cpu-y)/
-else
-CPU  :=
-endif
-
-common-y += $(BOARD) $(CPU) $(MACH)
-common-y += arch/ppc/lib/
+common-y += $(BOARD) $(MACH) arch/powerpc/
 
 ifdef CONFIG_MPC85xx
 lds-y += $(MACH)/barebox.lds
diff --git a/arch/ppc/boards/.gitignore b/arch/powerpc/boards/.gitignore
index d1165788c9..d1165788c9 100644
--- a/arch/ppc/boards/.gitignore
+++ b/arch/powerpc/boards/.gitignore
diff --git a/arch/ppc/boards/freescale-p1010rdb/Makefile b/arch/powerpc/boards/freescale-p1010rdb/Makefile
index a7b64eef4d..a7b64eef4d 100644
--- a/arch/ppc/boards/freescale-p1010rdb/Makefile
+++ b/arch/powerpc/boards/freescale-p1010rdb/Makefile
diff --git a/arch/ppc/boards/freescale-p1010rdb/config.h b/arch/powerpc/boards/freescale-p1010rdb/config.h
index 4f67183507..4f67183507 100644
--- a/arch/ppc/boards/freescale-p1010rdb/config.h
+++ b/arch/powerpc/boards/freescale-p1010rdb/config.h
diff --git a/arch/ppc/boards/freescale-p1010rdb/ddr.c b/arch/powerpc/boards/freescale-p1010rdb/ddr.c
index 18069f4df1..18069f4df1 100644
--- a/arch/ppc/boards/freescale-p1010rdb/ddr.c
+++ b/arch/powerpc/boards/freescale-p1010rdb/ddr.c
diff --git a/arch/ppc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/bin/init b/arch/powerpc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/bin/init
index c0e04c1f2d..c0e04c1f2d 100644
--- a/arch/ppc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/bin/init
+++ b/arch/powerpc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/bin/init
diff --git a/arch/ppc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/config b/arch/powerpc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/config
index bffd86882e..bffd86882e 100644
--- a/arch/ppc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/config
+++ b/arch/powerpc/boards/freescale-p1010rdb/defaultenv-freescale-p1010rdb/config
diff --git a/arch/ppc/boards/freescale-p1010rdb/law.c b/arch/powerpc/boards/freescale-p1010rdb/law.c
index 6edfbc2fb8..6edfbc2fb8 100644
--- a/arch/ppc/boards/freescale-p1010rdb/law.c
+++ b/arch/powerpc/boards/freescale-p1010rdb/law.c
diff --git a/arch/ppc/boards/freescale-p1010rdb/p1010rdb.c b/arch/powerpc/boards/freescale-p1010rdb/p1010rdb.c
index b163327597..b163327597 100644
--- a/arch/ppc/boards/freescale-p1010rdb/p1010rdb.c
+++ b/arch/powerpc/boards/freescale-p1010rdb/p1010rdb.c
diff --git a/arch/ppc/boards/freescale-p1010rdb/p1010rdb.h b/arch/powerpc/boards/freescale-p1010rdb/p1010rdb.h
index f325ff48fd..f325ff48fd 100644
--- a/arch/ppc/boards/freescale-p1010rdb/p1010rdb.h
+++ b/arch/powerpc/boards/freescale-p1010rdb/p1010rdb.h
diff --git a/arch/ppc/boards/freescale-p1010rdb/tlb.c b/arch/powerpc/boards/freescale-p1010rdb/tlb.c
index 23ef0f2ade..23ef0f2ade 100644
--- a/arch/ppc/boards/freescale-p1010rdb/tlb.c
+++ b/arch/powerpc/boards/freescale-p1010rdb/tlb.c
diff --git a/arch/ppc/boards/freescale-p1022ds/Makefile b/arch/powerpc/boards/freescale-p1022ds/Makefile
index 48867fa851..48867fa851 100644
--- a/arch/ppc/boards/freescale-p1022ds/Makefile
+++ b/arch/powerpc/boards/freescale-p1022ds/Makefile
diff --git a/arch/ppc/boards/freescale-p1022ds/config.h b/arch/powerpc/boards/freescale-p1022ds/config.h
index 666b9ff987..666b9ff987 100644
--- a/arch/ppc/boards/freescale-p1022ds/config.h
+++ b/arch/powerpc/boards/freescale-p1022ds/config.h
diff --git a/arch/ppc/boards/freescale-p1022ds/ddr.c b/arch/powerpc/boards/freescale-p1022ds/ddr.c
index 1944518c79..1944518c79 100644
--- a/arch/ppc/boards/freescale-p1022ds/ddr.c
+++ b/arch/powerpc/boards/freescale-p1022ds/ddr.c
diff --git a/arch/ppc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/bin/init b/arch/powerpc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/bin/init
index c0e04c1f2d..c0e04c1f2d 100644
--- a/arch/ppc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/bin/init
+++ b/arch/powerpc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/bin/init
diff --git a/arch/ppc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/config b/arch/powerpc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/config
index bffd86882e..bffd86882e 100644
--- a/arch/ppc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/config
+++ b/arch/powerpc/boards/freescale-p1022ds/defaultenv-freescale-p1022ds/config
diff --git a/arch/ppc/boards/freescale-p1022ds/ics307_clk.c b/arch/powerpc/boards/freescale-p1022ds/ics307_clk.c
index f7c5bbde99..f7c5bbde99 100644
--- a/arch/ppc/boards/freescale-p1022ds/ics307_clk.c
+++ b/arch/powerpc/boards/freescale-p1022ds/ics307_clk.c
diff --git a/arch/ppc/boards/freescale-p1022ds/law.c b/arch/powerpc/boards/freescale-p1022ds/law.c
index 167937a05a..167937a05a 100644
--- a/arch/ppc/boards/freescale-p1022ds/law.c
+++ b/arch/powerpc/boards/freescale-p1022ds/law.c
diff --git a/arch/ppc/boards/freescale-p1022ds/p1022ds.c b/arch/powerpc/boards/freescale-p1022ds/p1022ds.c
index d80c234ea9..d80c234ea9 100644
--- a/arch/ppc/boards/freescale-p1022ds/p1022ds.c
+++ b/arch/powerpc/boards/freescale-p1022ds/p1022ds.c
diff --git a/arch/ppc/boards/freescale-p1022ds/p1022ds.h b/arch/powerpc/boards/freescale-p1022ds/p1022ds.h
index cbc2aca644..cbc2aca644 100644
--- a/arch/ppc/boards/freescale-p1022ds/p1022ds.h
+++ b/arch/powerpc/boards/freescale-p1022ds/p1022ds.h
diff --git a/arch/ppc/boards/freescale-p1022ds/tlb.c b/arch/powerpc/boards/freescale-p1022ds/tlb.c
index 86ab43aec0..86ab43aec0 100644
--- a/arch/ppc/boards/freescale-p1022ds/tlb.c
+++ b/arch/powerpc/boards/freescale-p1022ds/tlb.c
diff --git a/arch/ppc/boards/freescale-p2020rdb/Makefile b/arch/powerpc/boards/freescale-p2020rdb/Makefile
index b2497f695c..b2497f695c 100644
--- a/arch/ppc/boards/freescale-p2020rdb/Makefile
+++ b/arch/powerpc/boards/freescale-p2020rdb/Makefile
diff --git a/arch/ppc/boards/freescale-p2020rdb/config.h b/arch/powerpc/boards/freescale-p2020rdb/config.h
index e607ee7b46..e607ee7b46 100644
--- a/arch/ppc/boards/freescale-p2020rdb/config.h
+++ b/arch/powerpc/boards/freescale-p2020rdb/config.h
diff --git a/arch/ppc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/bin/init b/arch/powerpc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/bin/init
index 4d7b03e26d..4d7b03e26d 100644
--- a/arch/ppc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/bin/init
+++ b/arch/powerpc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/bin/init
diff --git a/arch/ppc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/config b/arch/powerpc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/config
index 23e0ba2a5d..23e0ba2a5d 100644
--- a/arch/ppc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/config
+++ b/arch/powerpc/boards/freescale-p2020rdb/defaultenv-freescale-p2020rdb/config
diff --git a/arch/ppc/boards/freescale-p2020rdb/law.c b/arch/powerpc/boards/freescale-p2020rdb/law.c
index 420a69eeec..420a69eeec 100644
--- a/arch/ppc/boards/freescale-p2020rdb/law.c
+++ b/arch/powerpc/boards/freescale-p2020rdb/law.c
diff --git a/arch/ppc/boards/freescale-p2020rdb/p2020rdb.c b/arch/powerpc/boards/freescale-p2020rdb/p2020rdb.c
index 555976578e..555976578e 100644
--- a/arch/ppc/boards/freescale-p2020rdb/p2020rdb.c
+++ b/arch/powerpc/boards/freescale-p2020rdb/p2020rdb.c
diff --git a/arch/ppc/boards/freescale-p2020rdb/tlb.c b/arch/powerpc/boards/freescale-p2020rdb/tlb.c
index 9853673ff2..9853673ff2 100644
--- a/arch/ppc/boards/freescale-p2020rdb/tlb.c
+++ b/arch/powerpc/boards/freescale-p2020rdb/tlb.c
diff --git a/arch/ppc/boards/owc-da923rc/Makefile b/arch/powerpc/boards/owc-da923rc/Makefile
index 4cf6c5cf3c..4cf6c5cf3c 100644
--- a/arch/ppc/boards/owc-da923rc/Makefile
+++ b/arch/powerpc/boards/owc-da923rc/Makefile
diff --git a/arch/ppc/boards/owc-da923rc/config.h b/arch/powerpc/boards/owc-da923rc/config.h
index 3895324e95..3895324e95 100644
--- a/arch/ppc/boards/owc-da923rc/config.h
+++ b/arch/powerpc/boards/owc-da923rc/config.h
diff --git a/arch/ppc/boards/owc-da923rc/da923rc.c b/arch/powerpc/boards/owc-da923rc/da923rc.c
index 2665a15091..2665a15091 100644
--- a/arch/ppc/boards/owc-da923rc/da923rc.c
+++ b/arch/powerpc/boards/owc-da923rc/da923rc.c
diff --git a/arch/ppc/boards/owc-da923rc/ddr.c b/arch/powerpc/boards/owc-da923rc/ddr.c
index fc0c50cdcd..fc0c50cdcd 100644
--- a/arch/ppc/boards/owc-da923rc/ddr.c
+++ b/arch/powerpc/boards/owc-da923rc/ddr.c
diff --git a/arch/ppc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/boot b/arch/powerpc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/boot
index ce7da18e63..ce7da18e63 100644
--- a/arch/ppc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/boot
+++ b/arch/powerpc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/boot
diff --git a/arch/ppc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/init b/arch/powerpc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/init
index 80cc2cffb3..80cc2cffb3 100644
--- a/arch/ppc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/init
+++ b/arch/powerpc/boards/owc-da923rc/defaultenv-owc-da923rc/bin/init
diff --git a/arch/ppc/boards/owc-da923rc/defaultenv-owc-da923rc/config b/arch/powerpc/boards/owc-da923rc/defaultenv-owc-da923rc/config
index 79e2606a71..79e2606a71 100644
--- a/arch/ppc/boards/owc-da923rc/defaultenv-owc-da923rc/config
+++ b/arch/powerpc/boards/owc-da923rc/defaultenv-owc-da923rc/config
diff --git a/arch/ppc/boards/owc-da923rc/law.c b/arch/powerpc/boards/owc-da923rc/law.c
index 3d32c7e677..3d32c7e677 100644
--- a/arch/ppc/boards/owc-da923rc/law.c
+++ b/arch/powerpc/boards/owc-da923rc/law.c
diff --git a/arch/ppc/boards/owc-da923rc/nand.c b/arch/powerpc/boards/owc-da923rc/nand.c
index 550d790570..550d790570 100644
--- a/arch/ppc/boards/owc-da923rc/nand.c
+++ b/arch/powerpc/boards/owc-da923rc/nand.c
diff --git a/arch/ppc/boards/owc-da923rc/product_data.c b/arch/powerpc/boards/owc-da923rc/product_data.c
index 5135afdd2a..5135afdd2a 100644
--- a/arch/ppc/boards/owc-da923rc/product_data.c
+++ b/arch/powerpc/boards/owc-da923rc/product_data.c
diff --git a/arch/ppc/boards/owc-da923rc/product_data.h b/arch/powerpc/boards/owc-da923rc/product_data.h
index cbbb8d377f..cbbb8d377f 100644
--- a/arch/ppc/boards/owc-da923rc/product_data.h
+++ b/arch/powerpc/boards/owc-da923rc/product_data.h
diff --git a/arch/ppc/boards/owc-da923rc/tlb.c b/arch/powerpc/boards/owc-da923rc/tlb.c
index 889e2743b7..889e2743b7 100644
--- a/arch/ppc/boards/owc-da923rc/tlb.c
+++ b/arch/powerpc/boards/owc-da923rc/tlb.c
diff --git a/arch/ppc/boards/pcm030/Makefile b/arch/powerpc/boards/pcm030/Makefile
index 4e5dc4f57b..4e5dc4f57b 100644
--- a/arch/ppc/boards/pcm030/Makefile
+++ b/arch/powerpc/boards/pcm030/Makefile
diff --git a/arch/ppc/boards/pcm030/barebox.lds.S b/arch/powerpc/boards/pcm030/barebox.lds.S
index 6c91ed6256..6fd8b43c6e 100644
--- a/arch/ppc/boards/pcm030/barebox.lds.S
+++ b/arch/powerpc/boards/pcm030/barebox.lds.S
@@ -31,7 +31,7 @@ SECTIONS
   {
     _text = .;
     _stext = .;
-    arch/ppc/mach-mpc5xxx/start.o	(.text)
+    arch/powerpc/mach-mpc5xxx/start.o	(.text)
     *(.text*)
     *(.got1*)
     . = ALIGN(16);
diff --git a/arch/ppc/boards/pcm030/config.h b/arch/powerpc/boards/pcm030/config.h
index 3fe1f286d9..3fe1f286d9 100644
--- a/arch/ppc/boards/pcm030/config.h
+++ b/arch/powerpc/boards/pcm030/config.h
diff --git a/arch/ppc/boards/pcm030/eeprom.c b/arch/powerpc/boards/pcm030/eeprom.c
index aa00f361cd..aa00f361cd 100644
--- a/arch/ppc/boards/pcm030/eeprom.c
+++ b/arch/powerpc/boards/pcm030/eeprom.c
diff --git a/arch/ppc/boards/pcm030/env/init/mtdparts-nor b/arch/powerpc/boards/pcm030/env/init/mtdparts-nor
index 44c07ead21..44c07ead21 100644
--- a/arch/ppc/boards/pcm030/env/init/mtdparts-nor
+++ b/arch/powerpc/boards/pcm030/env/init/mtdparts-nor
diff --git a/arch/ppc/boards/pcm030/env/nv/linux.bootargs.console b/arch/powerpc/boards/pcm030/env/nv/linux.bootargs.console
index 31ce0e71eb..31ce0e71eb 100644
--- a/arch/ppc/boards/pcm030/env/nv/linux.bootargs.console
+++ b/arch/powerpc/boards/pcm030/env/nv/linux.bootargs.console
diff --git a/arch/ppc/boards/pcm030/mt46v32m16-75.h b/arch/powerpc/boards/pcm030/mt46v32m16-75.h
index 60ea09eebc..60ea09eebc 100644
--- a/arch/ppc/boards/pcm030/mt46v32m16-75.h
+++ b/arch/powerpc/boards/pcm030/mt46v32m16-75.h
diff --git a/arch/ppc/boards/pcm030/pcm030.c b/arch/powerpc/boards/pcm030/pcm030.c
index 05c1ce9ca8..05c1ce9ca8 100644
--- a/arch/ppc/boards/pcm030/pcm030.c
+++ b/arch/powerpc/boards/pcm030/pcm030.c
diff --git a/arch/ppc/configs/owc_da923rc_defconfig b/arch/powerpc/configs/owc_da923rc_defconfig
index 183ddb15f9..183ddb15f9 100644
--- a/arch/ppc/configs/owc_da923rc_defconfig
+++ b/arch/powerpc/configs/owc_da923rc_defconfig
diff --git a/arch/ppc/configs/p1010rdb_defconfig b/arch/powerpc/configs/p1010rdb_defconfig
index 73c02c2e7f..73c02c2e7f 100644
--- a/arch/ppc/configs/p1010rdb_defconfig
+++ b/arch/powerpc/configs/p1010rdb_defconfig
diff --git a/arch/ppc/configs/p1022ds_defconfig b/arch/powerpc/configs/p1022ds_defconfig
index fce3eabaf9..fce3eabaf9 100644
--- a/arch/ppc/configs/p1022ds_defconfig
+++ b/arch/powerpc/configs/p1022ds_defconfig
diff --git a/arch/ppc/configs/p2020rdb_defconfig b/arch/powerpc/configs/p2020rdb_defconfig
index 6cc0328727..6cc0328727 100644
--- a/arch/ppc/configs/p2020rdb_defconfig
+++ b/arch/powerpc/configs/p2020rdb_defconfig
diff --git a/arch/ppc/configs/pcm030_defconfig b/arch/powerpc/configs/pcm030_defconfig
index bd83ff44f0..b97a8d5d0c 100644
--- a/arch/ppc/configs/pcm030_defconfig
+++ b/arch/powerpc/configs/pcm030_defconfig
@@ -6,7 +6,7 @@ CONFIG_AUTO_COMPLETE=y
 CONFIG_BOOTM_SHOW_TYPE=y
 CONFIG_PARTITION=y
 CONFIG_DEFAULT_ENVIRONMENT_GENERIC_NEW=y
-CONFIG_DEFAULT_ENVIRONMENT_PATH="arch/ppc/boards/pcm030/env"
+CONFIG_DEFAULT_ENVIRONMENT_PATH="arch/powerpc/boards/pcm030/env"
 CONFIG_LONGHELP=y
 CONFIG_CMD_IOMEM=y
 CONFIG_CMD_MEMINFO=y
diff --git a/arch/ppc/cpu-85xx/Makefile b/arch/powerpc/cpu-85xx/Makefile
index c649c4ec25..c649c4ec25 100644
--- a/arch/ppc/cpu-85xx/Makefile
+++ b/arch/powerpc/cpu-85xx/Makefile
diff --git a/arch/ppc/cpu-85xx/fixed_ivor.S b/arch/powerpc/cpu-85xx/fixed_ivor.S
index 0674c3fc14..0674c3fc14 100644
--- a/arch/ppc/cpu-85xx/fixed_ivor.S
+++ b/arch/powerpc/cpu-85xx/fixed_ivor.S
diff --git a/arch/ppc/cpu-85xx/mmu.c b/arch/powerpc/cpu-85xx/mmu.c
index 6b93c3e8db..6b93c3e8db 100644
--- a/arch/ppc/cpu-85xx/mmu.c
+++ b/arch/powerpc/cpu-85xx/mmu.c
diff --git a/arch/ppc/cpu-85xx/resetvec.S b/arch/powerpc/cpu-85xx/resetvec.S
index 29555d4a00..29555d4a00 100644
--- a/arch/ppc/cpu-85xx/resetvec.S
+++ b/arch/powerpc/cpu-85xx/resetvec.S
diff --git a/arch/ppc/cpu-85xx/start.S b/arch/powerpc/cpu-85xx/start.S
index 82c2c0ad8c..82c2c0ad8c 100644
--- a/arch/ppc/cpu-85xx/start.S
+++ b/arch/powerpc/cpu-85xx/start.S
diff --git a/arch/ppc/cpu-85xx/tlb.c b/arch/powerpc/cpu-85xx/tlb.c
index 3a5b413627..3a5b413627 100644
--- a/arch/ppc/cpu-85xx/tlb.c
+++ b/arch/powerpc/cpu-85xx/tlb.c
diff --git a/arch/ppc/cpu-85xx/traps.c b/arch/powerpc/cpu-85xx/traps.c
index f8e5e42290..f8e5e42290 100644
--- a/arch/ppc/cpu-85xx/traps.c
+++ b/arch/powerpc/cpu-85xx/traps.c
diff --git a/arch/ppc/ddr-8xxx/Makefile b/arch/powerpc/ddr-8xxx/Makefile
index 43ae3a41df..43ae3a41df 100644
--- a/arch/ppc/ddr-8xxx/Makefile
+++ b/arch/powerpc/ddr-8xxx/Makefile
diff --git a/arch/ppc/ddr-8xxx/common_timing_params.h b/arch/powerpc/ddr-8xxx/common_timing_params.h
index 85a1e2868f..85a1e2868f 100644
--- a/arch/ppc/ddr-8xxx/common_timing_params.h
+++ b/arch/powerpc/ddr-8xxx/common_timing_params.h
diff --git a/arch/ppc/ddr-8xxx/ctrl_regs.c b/arch/powerpc/ddr-8xxx/ctrl_regs.c
index e3d43ab09e..e3d43ab09e 100644
--- a/arch/ppc/ddr-8xxx/ctrl_regs.c
+++ b/arch/powerpc/ddr-8xxx/ctrl_regs.c
diff --git a/arch/ppc/ddr-8xxx/ddr.h b/arch/powerpc/ddr-8xxx/ddr.h
index 2ef87f2776..2ef87f2776 100644
--- a/arch/ppc/ddr-8xxx/ddr.h
+++ b/arch/powerpc/ddr-8xxx/ddr.h
diff --git a/arch/ppc/ddr-8xxx/ddr2_dimm_params.c b/arch/powerpc/ddr-8xxx/ddr2_dimm_params.c
index 22c05ca6da..22c05ca6da 100644
--- a/arch/ppc/ddr-8xxx/ddr2_dimm_params.c
+++ b/arch/powerpc/ddr-8xxx/ddr2_dimm_params.c
diff --git a/arch/ppc/ddr-8xxx/ddr3_dimm_params.c b/arch/powerpc/ddr-8xxx/ddr3_dimm_params.c
index 4f44925ab9..4f44925ab9 100644
--- a/arch/ppc/ddr-8xxx/ddr3_dimm_params.c
+++ b/arch/powerpc/ddr-8xxx/ddr3_dimm_params.c
diff --git a/arch/ppc/ddr-8xxx/ddr_setctrl.c b/arch/powerpc/ddr-8xxx/ddr_setctrl.c
index 115fb42070..115fb42070 100644
--- a/arch/ppc/ddr-8xxx/ddr_setctrl.c
+++ b/arch/powerpc/ddr-8xxx/ddr_setctrl.c
diff --git a/arch/ppc/ddr-8xxx/lc_common_dimm_params.c b/arch/powerpc/ddr-8xxx/lc_common_dimm_params.c
index 9d90fb76db..9d90fb76db 100644
--- a/arch/ppc/ddr-8xxx/lc_common_dimm_params.c
+++ b/arch/powerpc/ddr-8xxx/lc_common_dimm_params.c
diff --git a/arch/ppc/ddr-8xxx/main.c b/arch/powerpc/ddr-8xxx/main.c
index 99b877b5ca..99b877b5ca 100644
--- a/arch/ppc/ddr-8xxx/main.c
+++ b/arch/powerpc/ddr-8xxx/main.c
diff --git a/arch/ppc/ddr-8xxx/options.c b/arch/powerpc/ddr-8xxx/options.c
index ccf5d5e9d8..ccf5d5e9d8 100644
--- a/arch/ppc/ddr-8xxx/options.c
+++ b/arch/powerpc/ddr-8xxx/options.c
diff --git a/arch/ppc/ddr-8xxx/util.c b/arch/powerpc/ddr-8xxx/util.c
index 626b5f3f9b..626b5f3f9b 100644
--- a/arch/ppc/ddr-8xxx/util.c
+++ b/arch/powerpc/ddr-8xxx/util.c
diff --git a/arch/ppc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index af3c61a823..af3c61a823 100644
--- a/arch/ppc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
diff --git a/arch/ppc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h
index 2fdd57eff0..2fdd57eff0 100644
--- a/arch/ppc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
diff --git a/arch/ppc/include/asm/bitsperlong.h b/arch/powerpc/include/asm/bitsperlong.h
index 6dc0bb0c13..6dc0bb0c13 100644
--- a/arch/ppc/include/asm/bitsperlong.h
+++ b/arch/powerpc/include/asm/bitsperlong.h
diff --git a/arch/ppc/include/asm/byteorder.h b/arch/powerpc/include/asm/byteorder.h
index aa6cc4fac9..aa6cc4fac9 100644
--- a/arch/ppc/include/asm/byteorder.h
+++ b/arch/powerpc/include/asm/byteorder.h
diff --git a/arch/ppc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 147ceb6714..147ceb6714 100644
--- a/arch/ppc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
diff --git a/arch/ppc/include/asm/common.h b/arch/powerpc/include/asm/common.h
index b91f51e462..b91f51e462 100644
--- a/arch/ppc/include/asm/common.h
+++ b/arch/powerpc/include/asm/common.h
diff --git a/arch/ppc/include/asm/config.h b/arch/powerpc/include/asm/config.h
index ce6581a83f..ce6581a83f 100644
--- a/arch/ppc/include/asm/config.h
+++ b/arch/powerpc/include/asm/config.h
diff --git a/arch/ppc/include/asm/dma.h b/arch/powerpc/include/asm/dma.h
index 27d269f491..27d269f491 100644
--- a/arch/ppc/include/asm/dma.h
+++ b/arch/powerpc/include/asm/dma.h
diff --git a/arch/ppc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index bb8762b385..bb8762b385 100644
--- a/arch/ppc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
diff --git a/arch/ppc/include/asm/fsl_ddr_dimm_params.h b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
index 9e6f6b4d34..9e6f6b4d34 100644
--- a/arch/ppc/include/asm/fsl_ddr_dimm_params.h
+++ b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
diff --git a/arch/ppc/include/asm/fsl_ddr_sdram.h b/arch/powerpc/include/asm/fsl_ddr_sdram.h
index f4732389f6..f4732389f6 100644
--- a/arch/ppc/include/asm/fsl_ddr_sdram.h
+++ b/arch/powerpc/include/asm/fsl_ddr_sdram.h
diff --git a/arch/ppc/include/asm/fsl_ifc.h b/arch/powerpc/include/asm/fsl_ifc.h
index 8faff75033..8faff75033 100644
--- a/arch/ppc/include/asm/fsl_ifc.h
+++ b/arch/powerpc/include/asm/fsl_ifc.h
diff --git a/arch/ppc/include/asm/fsl_law.h b/arch/powerpc/include/asm/fsl_law.h
index 7acb63c9de..7acb63c9de 100644
--- a/arch/ppc/include/asm/fsl_law.h
+++ b/arch/powerpc/include/asm/fsl_law.h
diff --git a/arch/ppc/include/asm/fsl_lbc.h b/arch/powerpc/include/asm/fsl_lbc.h
index 27d194ee74..27d194ee74 100644
--- a/arch/ppc/include/asm/fsl_lbc.h
+++ b/arch/powerpc/include/asm/fsl_lbc.h
diff --git a/arch/ppc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 025c06f3b7..025c06f3b7 100644
--- a/arch/ppc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
diff --git a/arch/ppc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index c691de1c77..c691de1c77 100644
--- a/arch/ppc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
diff --git a/arch/ppc/include/asm/module.h b/arch/powerpc/include/asm/module.h
index 09c04402c5..09c04402c5 100644
--- a/arch/ppc/include/asm/module.h
+++ b/arch/powerpc/include/asm/module.h
diff --git a/arch/ppc/include/asm/pci_io.h b/arch/powerpc/include/asm/pci_io.h
index 9b738c383f..9b738c383f 100644
--- a/arch/ppc/include/asm/pci_io.h
+++ b/arch/powerpc/include/asm/pci_io.h
diff --git a/arch/ppc/include/asm/posix_types.h b/arch/powerpc/include/asm/posix_types.h
index 22cae6230c..22cae6230c 100644
--- a/arch/ppc/include/asm/posix_types.h
+++ b/arch/powerpc/include/asm/posix_types.h
diff --git a/arch/ppc/include/asm/ppc_asm.tmpl b/arch/powerpc/include/asm/ppc_asm.tmpl
index 60c6caf53c..60c6caf53c 100644
--- a/arch/ppc/include/asm/ppc_asm.tmpl
+++ b/arch/powerpc/include/asm/ppc_asm.tmpl
diff --git a/arch/ppc/include/asm/ppc_defs.h b/arch/powerpc/include/asm/ppc_defs.h
index fcdb38d4fd..fcdb38d4fd 100644
--- a/arch/ppc/include/asm/ppc_defs.h
+++ b/arch/powerpc/include/asm/ppc_defs.h
diff --git a/arch/ppc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 39a89a9d15..39a89a9d15 100644
--- a/arch/ppc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
diff --git a/arch/ppc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index b4d599f43b..b4d599f43b 100644
--- a/arch/ppc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
diff --git a/arch/ppc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h
index 2b8c516038..2b8c516038 100644
--- a/arch/ppc/include/asm/sections.h
+++ b/arch/powerpc/include/asm/sections.h
diff --git a/arch/ppc/include/asm/sigcontext.h b/arch/powerpc/include/asm/sigcontext.h
index 4bd66a707d..4bd66a707d 100644
--- a/arch/ppc/include/asm/sigcontext.h
+++ b/arch/powerpc/include/asm/sigcontext.h
diff --git a/arch/ppc/include/asm/signal.h b/arch/powerpc/include/asm/signal.h
index b11a28efd1..b11a28efd1 100644
--- a/arch/ppc/include/asm/signal.h
+++ b/arch/powerpc/include/asm/signal.h
diff --git a/arch/ppc/include/asm/status_led.h b/arch/powerpc/include/asm/status_led.h
index eb81f371c9..eb81f371c9 100644
--- a/arch/ppc/include/asm/status_led.h
+++ b/arch/powerpc/include/asm/status_led.h
diff --git a/arch/ppc/include/asm/string.h b/arch/powerpc/include/asm/string.h
index 33d143f04e..33d143f04e 100644
--- a/arch/ppc/include/asm/string.h
+++ b/arch/powerpc/include/asm/string.h
diff --git a/arch/ppc/include/asm/swab.h b/arch/powerpc/include/asm/swab.h
index 110488e641..110488e641 100644
--- a/arch/ppc/include/asm/swab.h
+++ b/arch/powerpc/include/asm/swab.h
diff --git a/arch/ppc/include/asm/types.h b/arch/powerpc/include/asm/types.h
index 2d3ce0a283..2d3ce0a283 100644
--- a/arch/ppc/include/asm/types.h
+++ b/arch/powerpc/include/asm/types.h
diff --git a/arch/ppc/include/asm/unaligned.h b/arch/powerpc/include/asm/unaligned.h
index a41fa8cb4a..a41fa8cb4a 100644
--- a/arch/ppc/include/asm/unaligned.h
+++ b/arch/powerpc/include/asm/unaligned.h
diff --git a/arch/ppc/lib/Makefile b/arch/powerpc/lib/Makefile
index ba2f078b62..ba2f078b62 100644
--- a/arch/ppc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
diff --git a/arch/ppc/lib/asm-offsets.c b/arch/powerpc/lib/asm-offsets.c
index bef280edd7..bef280edd7 100644
--- a/arch/ppc/lib/asm-offsets.c
+++ b/arch/powerpc/lib/asm-offsets.c
diff --git a/arch/ppc/lib/bat_rw.c b/arch/powerpc/lib/bat_rw.c
index 3e8882eaf4..3e8882eaf4 100644
--- a/arch/ppc/lib/bat_rw.c
+++ b/arch/powerpc/lib/bat_rw.c
diff --git a/arch/ppc/lib/board.c b/arch/powerpc/lib/board.c
index 3f13db9218..3f13db9218 100644
--- a/arch/ppc/lib/board.c
+++ b/arch/powerpc/lib/board.c
diff --git a/arch/ppc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S
index b0fbbfc997..b0fbbfc997 100644
--- a/arch/ppc/lib/crtsavres.S
+++ b/arch/powerpc/lib/crtsavres.S
diff --git a/arch/ppc/lib/extable.c b/arch/powerpc/lib/extable.c
index 1e9ad1e63c..1e9ad1e63c 100644
--- a/arch/ppc/lib/extable.c
+++ b/arch/powerpc/lib/extable.c
diff --git a/arch/ppc/lib/kgdb.c b/arch/powerpc/lib/kgdb.c
index 762cc7a88c..762cc7a88c 100644
--- a/arch/ppc/lib/kgdb.c
+++ b/arch/powerpc/lib/kgdb.c
diff --git a/arch/ppc/lib/misc.S b/arch/powerpc/lib/misc.S
index bd06ff2062..bd06ff2062 100644
--- a/arch/ppc/lib/misc.S
+++ b/arch/powerpc/lib/misc.S
diff --git a/arch/ppc/lib/module.c b/arch/powerpc/lib/module.c
index 9ec6095571..9ec6095571 100644
--- a/arch/ppc/lib/module.c
+++ b/arch/powerpc/lib/module.c
diff --git a/arch/ppc/lib/ppclinux.c b/arch/powerpc/lib/ppclinux.c
index 05c29be7da..05c29be7da 100644
--- a/arch/ppc/lib/ppclinux.c
+++ b/arch/powerpc/lib/ppclinux.c
diff --git a/arch/ppc/lib/ppcstring.S b/arch/powerpc/lib/ppcstring.S
index cce85e3252..cce85e3252 100644
--- a/arch/ppc/lib/ppcstring.S
+++ b/arch/powerpc/lib/ppcstring.S
diff --git a/arch/ppc/lib/reloc.S b/arch/powerpc/lib/reloc.S
index 7ef2ea3340..7ef2ea3340 100644
--- a/arch/ppc/lib/reloc.S
+++ b/arch/powerpc/lib/reloc.S
diff --git a/arch/ppc/lib/ticks.S b/arch/powerpc/lib/ticks.S
index a41fe8b781..a41fe8b781 100644
--- a/arch/ppc/lib/ticks.S
+++ b/arch/powerpc/lib/ticks.S
diff --git a/arch/ppc/mach-mpc5xxx/Kconfig b/arch/powerpc/mach-mpc5xxx/Kconfig
index 180aa32ad1..180aa32ad1 100644
--- a/arch/ppc/mach-mpc5xxx/Kconfig
+++ b/arch/powerpc/mach-mpc5xxx/Kconfig
diff --git a/arch/ppc/mach-mpc5xxx/Makefile b/arch/powerpc/mach-mpc5xxx/Makefile
index c532a6d1ee..c532a6d1ee 100644
--- a/arch/ppc/mach-mpc5xxx/Makefile
+++ b/arch/powerpc/mach-mpc5xxx/Makefile
diff --git a/arch/ppc/mach-mpc5xxx/cpu.c b/arch/powerpc/mach-mpc5xxx/cpu.c
index ab58967aa4..ab58967aa4 100644
--- a/arch/ppc/mach-mpc5xxx/cpu.c
+++ b/arch/powerpc/mach-mpc5xxx/cpu.c
diff --git a/arch/ppc/mach-mpc5xxx/cpu_init.c b/arch/powerpc/mach-mpc5xxx/cpu_init.c
index 1dae6c1e46..1dae6c1e46 100644
--- a/arch/ppc/mach-mpc5xxx/cpu_init.c
+++ b/arch/powerpc/mach-mpc5xxx/cpu_init.c
diff --git a/arch/ppc/mach-mpc5xxx/firmware_sc_task.impl.S b/arch/powerpc/mach-mpc5xxx/firmware_sc_task.impl.S
index b668ee5cf8..b668ee5cf8 100644
--- a/arch/ppc/mach-mpc5xxx/firmware_sc_task.impl.S
+++ b/arch/powerpc/mach-mpc5xxx/firmware_sc_task.impl.S
diff --git a/arch/ppc/mach-mpc5xxx/firmware_sc_task_bestcomm.impl.S b/arch/powerpc/mach-mpc5xxx/firmware_sc_task_bestcomm.impl.S
index 42d0e3ce08..42d0e3ce08 100644
--- a/arch/ppc/mach-mpc5xxx/firmware_sc_task_bestcomm.impl.S
+++ b/arch/powerpc/mach-mpc5xxx/firmware_sc_task_bestcomm.impl.S
diff --git a/arch/ppc/mach-mpc5xxx/include/mach/clock.h b/arch/powerpc/mach-mpc5xxx/include/mach/clock.h
index b19686f18c..b19686f18c 100644
--- a/arch/ppc/mach-mpc5xxx/include/mach/clock.h
+++ b/arch/powerpc/mach-mpc5xxx/include/mach/clock.h
diff --git a/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h b/arch/powerpc/mach-mpc5xxx/include/mach/mpc5xxx.h
index f2cae9097d..1e2e726355 100644
--- a/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
+++ b/arch/powerpc/mach-mpc5xxx/include/mach/mpc5xxx.h
@@ -1,5 +1,5 @@
 /*
- * arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
+ * arch/powerpc/mach-mpc5xxx/include/mach/mpc5xxx.h
  *
  * Prototypes, etc. for the Motorola MGT5xxx/MPC5xxx
  * embedded cpu chips
diff --git a/arch/ppc/mach-mpc5xxx/include/mach/sdma.h b/arch/powerpc/mach-mpc5xxx/include/mach/sdma.h
index 6a25d79fb6..6a25d79fb6 100644
--- a/arch/ppc/mach-mpc5xxx/include/mach/sdma.h
+++ b/arch/powerpc/mach-mpc5xxx/include/mach/sdma.h
diff --git a/arch/ppc/mach-mpc5xxx/io.S b/arch/powerpc/mach-mpc5xxx/io.S
index 3ea9b3f0fc..3ea9b3f0fc 100644
--- a/arch/ppc/mach-mpc5xxx/io.S
+++ b/arch/powerpc/mach-mpc5xxx/io.S
diff --git a/arch/ppc/mach-mpc5xxx/loadtask.c b/arch/powerpc/mach-mpc5xxx/loadtask.c
index 1458cf7218..1458cf7218 100644
--- a/arch/ppc/mach-mpc5xxx/loadtask.c
+++ b/arch/powerpc/mach-mpc5xxx/loadtask.c
diff --git a/arch/ppc/mach-mpc5xxx/pci_mpc5200.c b/arch/powerpc/mach-mpc5xxx/pci_mpc5200.c
index 99fa970dd0..99fa970dd0 100644
--- a/arch/ppc/mach-mpc5xxx/pci_mpc5200.c
+++ b/arch/powerpc/mach-mpc5xxx/pci_mpc5200.c
diff --git a/arch/ppc/mach-mpc5xxx/reginfo.c b/arch/powerpc/mach-mpc5xxx/reginfo.c
index e41d235a5d..e41d235a5d 100644
--- a/arch/ppc/mach-mpc5xxx/reginfo.c
+++ b/arch/powerpc/mach-mpc5xxx/reginfo.c
diff --git a/arch/ppc/mach-mpc5xxx/speed.c b/arch/powerpc/mach-mpc5xxx/speed.c
index 76a3019637..76a3019637 100644
--- a/arch/ppc/mach-mpc5xxx/speed.c
+++ b/arch/powerpc/mach-mpc5xxx/speed.c
diff --git a/arch/ppc/mach-mpc5xxx/start.S b/arch/powerpc/mach-mpc5xxx/start.S
index 291f6250a5..291f6250a5 100644
--- a/arch/ppc/mach-mpc5xxx/start.S
+++ b/arch/powerpc/mach-mpc5xxx/start.S
diff --git a/arch/ppc/mach-mpc5xxx/time.c b/arch/powerpc/mach-mpc5xxx/time.c
index aaa4573f6f..aaa4573f6f 100644
--- a/arch/ppc/mach-mpc5xxx/time.c
+++ b/arch/powerpc/mach-mpc5xxx/time.c
diff --git a/arch/ppc/mach-mpc5xxx/traps.c b/arch/powerpc/mach-mpc5xxx/traps.c
index 8441da2108..8441da2108 100644
--- a/arch/ppc/mach-mpc5xxx/traps.c
+++ b/arch/powerpc/mach-mpc5xxx/traps.c
diff --git a/arch/ppc/mach-mpc85xx/.gitignore b/arch/powerpc/mach-mpc85xx/.gitignore
index d1165788c9..d1165788c9 100644
--- a/arch/ppc/mach-mpc85xx/.gitignore
+++ b/arch/powerpc/mach-mpc85xx/.gitignore
diff --git a/arch/ppc/mach-mpc85xx/Kconfig b/arch/powerpc/mach-mpc85xx/Kconfig
index aa518b98fc..aa518b98fc 100644
--- a/arch/ppc/mach-mpc85xx/Kconfig
+++ b/arch/powerpc/mach-mpc85xx/Kconfig
diff --git a/arch/ppc/mach-mpc85xx/Makefile b/arch/powerpc/mach-mpc85xx/Makefile
index de4f5efde2..de4f5efde2 100644
--- a/arch/ppc/mach-mpc85xx/Makefile
+++ b/arch/powerpc/mach-mpc85xx/Makefile
diff --git a/arch/ppc/mach-mpc85xx/barebox.lds.S b/arch/powerpc/mach-mpc85xx/barebox.lds.S
index a09a01eba1..2b73fda4e6 100644
--- a/arch/ppc/mach-mpc85xx/barebox.lds.S
+++ b/arch/powerpc/mach-mpc85xx/barebox.lds.S
@@ -121,13 +121,13 @@ SECTIONS
   .bootpg RESET_VECTOR_ADDRESS - 0xffc :
   {
     _text = .;
-    arch/ppc/cpu-85xx/start.o	(.bootpg)
+    arch/powerpc/cpu-85xx/start.o	(.bootpg)
   } :text = 0xffff
 
   .resetvec RESET_VECTOR_ADDRESS :
   {
     KEEP(*(.resetvec))
-    arch/ppc/cpu-85xx/resetvec.o	(.resetvec)
+    arch/powerpc/cpu-85xx/resetvec.o	(.resetvec)
   } :text = 0xffff
 
   . = RESET_VECTOR_ADDRESS + 0x4;
diff --git a/arch/ppc/mach-mpc85xx/cpu.c b/arch/powerpc/mach-mpc85xx/cpu.c
index 42464e810c..42464e810c 100644
--- a/arch/ppc/mach-mpc85xx/cpu.c
+++ b/arch/powerpc/mach-mpc85xx/cpu.c
diff --git a/arch/ppc/mach-mpc85xx/cpu_init.c b/arch/powerpc/mach-mpc85xx/cpu_init.c
index 003a5f15b4..003a5f15b4 100644
--- a/arch/ppc/mach-mpc85xx/cpu_init.c
+++ b/arch/powerpc/mach-mpc85xx/cpu_init.c
diff --git a/arch/ppc/mach-mpc85xx/cpuid.c b/arch/powerpc/mach-mpc85xx/cpuid.c
index 1f54a2b1c9..1f54a2b1c9 100644
--- a/arch/ppc/mach-mpc85xx/cpuid.c
+++ b/arch/powerpc/mach-mpc85xx/cpuid.c
diff --git a/arch/ppc/mach-mpc85xx/eth-devices.c b/arch/powerpc/mach-mpc85xx/eth-devices.c
index ea5caff0c2..ea5caff0c2 100644
--- a/arch/ppc/mach-mpc85xx/eth-devices.c
+++ b/arch/powerpc/mach-mpc85xx/eth-devices.c
diff --git a/arch/ppc/mach-mpc85xx/fdt.c b/arch/powerpc/mach-mpc85xx/fdt.c
index 1a2d780737..1a2d780737 100644
--- a/arch/ppc/mach-mpc85xx/fdt.c
+++ b/arch/powerpc/mach-mpc85xx/fdt.c
diff --git a/arch/ppc/mach-mpc85xx/fsl_gpio.c b/arch/powerpc/mach-mpc85xx/fsl_gpio.c
index 468c780ff8..468c780ff8 100644
--- a/arch/ppc/mach-mpc85xx/fsl_gpio.c
+++ b/arch/powerpc/mach-mpc85xx/fsl_gpio.c
diff --git a/arch/ppc/mach-mpc85xx/fsl_i2c.c b/arch/powerpc/mach-mpc85xx/fsl_i2c.c
index 51fcc64c26..51fcc64c26 100644
--- a/arch/ppc/mach-mpc85xx/fsl_i2c.c
+++ b/arch/powerpc/mach-mpc85xx/fsl_i2c.c
diff --git a/arch/ppc/mach-mpc85xx/fsl_law.c b/arch/powerpc/mach-mpc85xx/fsl_law.c
index 38902e3be8..38902e3be8 100644
--- a/arch/ppc/mach-mpc85xx/fsl_law.c
+++ b/arch/powerpc/mach-mpc85xx/fsl_law.c
diff --git a/arch/ppc/mach-mpc85xx/include/mach/clock.h b/arch/powerpc/mach-mpc85xx/include/mach/clock.h
index 0e68cf6667..0e68cf6667 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/clock.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/clock.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/config_mpc85xx.h b/arch/powerpc/mach-mpc85xx/include/mach/config_mpc85xx.h
index fad2c47d11..fad2c47d11 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/config_mpc85xx.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/config_mpc85xx.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/early_udelay.h b/arch/powerpc/mach-mpc85xx/include/mach/early_udelay.h
index b8dc501251..b8dc501251 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/early_udelay.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/early_udelay.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/ffs64.h b/arch/powerpc/mach-mpc85xx/include/mach/ffs64.h
index 045498c513..045498c513 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/ffs64.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/ffs64.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/fsl_i2c.h b/arch/powerpc/mach-mpc85xx/include/mach/fsl_i2c.h
index d187c6cf49..d187c6cf49 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/fsl_i2c.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/fsl_i2c.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/gianfar.h b/arch/powerpc/mach-mpc85xx/include/mach/gianfar.h
index 660cb1e98f..660cb1e98f 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/gianfar.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/gianfar.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/gpio.h b/arch/powerpc/mach-mpc85xx/include/mach/gpio.h
index b41ecc5214..b41ecc5214 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/gpio.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/gpio.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/immap_85xx.h b/arch/powerpc/mach-mpc85xx/include/mach/immap_85xx.h
index abcdb5c1e0..abcdb5c1e0 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/immap_85xx.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/immap_85xx.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/mmu.h b/arch/powerpc/mach-mpc85xx/include/mach/mmu.h
index e2ecc62ef0..e2ecc62ef0 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/mmu.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/mmu.h
diff --git a/arch/ppc/mach-mpc85xx/include/mach/mpc85xx.h b/arch/powerpc/mach-mpc85xx/include/mach/mpc85xx.h
index 1d9993ace9..1d9993ace9 100644
--- a/arch/ppc/mach-mpc85xx/include/mach/mpc85xx.h
+++ b/arch/powerpc/mach-mpc85xx/include/mach/mpc85xx.h
diff --git a/arch/ppc/mach-mpc85xx/speed.c b/arch/powerpc/mach-mpc85xx/speed.c
index 610949443c..610949443c 100644
--- a/arch/ppc/mach-mpc85xx/speed.c
+++ b/arch/powerpc/mach-mpc85xx/speed.c
diff --git a/arch/ppc/mach-mpc85xx/time.c b/arch/powerpc/mach-mpc85xx/time.c
index 9014fce194..9014fce194 100644
--- a/arch/ppc/mach-mpc85xx/time.c
+++ b/arch/powerpc/mach-mpc85xx/time.c
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index fa8a173d8a..c71319507c 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -1,6 +1,6 @@
 KBUILD_DEFCONFIG := erizo_generic_defconfig
 
-CPPFLAGS += -fno-strict-aliasing
+KBUILD_CPPFLAGS += -fno-strict-aliasing
 
 ifeq ($(CONFIG_ARCH_RV32I),y)
 	cflags-y += -march=rv32im
@@ -10,17 +10,16 @@ cflags-y += -fno-pic -pipe
 cflags-y += -Wall -Wstrict-prototypes \
 	-Wno-uninitialized -Wno-format -Wno-main -mcmodel=medany
 
-LDFLAGS += $(ldflags-y)
 LDFLAGS_barebox += -nostdlib
 
 machine-$(CONFIG_MACH_ERIZO)	:= erizo
 
 TEXT_BASE = $(CONFIG_TEXT_BASE)
-CPPFLAGS += -DTEXT_BASE=$(CONFIG_TEXT_BASE)
+KBUILD_CPPFLAGS += -DTEXT_BASE=$(CONFIG_TEXT_BASE)
 
 ifndef CONFIG_MODULES
 # Add cleanup flags
-CPPFLAGS += -fdata-sections -ffunction-sections
+KBUILD_CPPFLAGS += -fdata-sections -ffunction-sections
 LDFLAGS_barebox += -static --gc-sections
 endif
 
@@ -28,11 +27,7 @@ KBUILD_BINARY := barebox.bin
 
 machdirs := $(patsubst %,arch/riscv/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 archprepare: maketools
 
@@ -50,8 +45,8 @@ common-y += arch/riscv/lib/
 
 common-$(CONFIG_OFTREE) += arch/riscv/dts/
 
-CPPFLAGS += $(cflags-y)
-CFLAGS += $(cflags-y)
+KBUILD_CPPFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
 
 lds-y	:= arch/riscv/lib/barebox.lds
 
diff --git a/arch/sandbox/Makefile b/arch/sandbox/Makefile
index b7470c3330..3d2eb5bc11 100644
--- a/arch/sandbox/Makefile
+++ b/arch/sandbox/Makefile
@@ -1,6 +1,6 @@
 KBUILD_DEFCONFIG := sandbox_defconfig
 
-CPPFLAGS += -D__SANDBOX__ -fno-strict-aliasing -fvisibility=hidden
+KBUILD_CPPFLAGS += -D__SANDBOX__ -fno-strict-aliasing -fvisibility=hidden
 
 
 machine-y := sandbox
@@ -11,7 +11,7 @@ lds-y   := $(BOARD)/barebox.lds
 
 
 TEXT_BASE = $(CONFIG_TEXT_BASE)
-CFLAGS += -Dmalloc=barebox_malloc -Dcalloc=barebox_calloc \
+KBUILD_CFLAGS += -Dmalloc=barebox_malloc -Dcalloc=barebox_calloc \
 		-Dfree=barebox_free -Drealloc=barebox_realloc \
 		-Dread=barebox_read -Dwrite=barebox_write \
 		-Dopen=barebox_open -Dclose=barebox_close \
@@ -29,11 +29,7 @@ CFLAGS += -Dmalloc=barebox_malloc -Dcalloc=barebox_calloc \
 
 machdirs := $(patsubst %,arch/sandbox/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 archprepare: maketools
 
@@ -48,7 +44,7 @@ FTDI1_LIBS := $(shell pkg-config libftdi1 --libs)
 endif
 
 ifeq ($(CONFIG_KASAN),y)
-CPPFLAGS += -fsanitize=address
+KBUILD_CPPFLAGS += -fsanitize=address
 SANITIZER_LIBS += -fsanitize=address
 endif
 
diff --git a/arch/sandbox/os/Makefile b/arch/sandbox/os/Makefile
index 75baa34a83..c012c9cf01 100644
--- a/arch/sandbox/os/Makefile
+++ b/arch/sandbox/os/Makefile
@@ -2,15 +2,11 @@ machine-y := sandbox
 
 machdirs := $(patsubst %,arch/sandbox/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS := $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS = $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
+KBUILD_CPPFLAGS = $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
-CPPFLAGS += -DCONFIG_MALLOC_SIZE=$(CONFIG_MALLOC_SIZE)
+KBUILD_CPPFLAGS += -DCONFIG_MALLOC_SIZE=$(CONFIG_MALLOC_SIZE)
 
-CFLAGS := -Wall
+KBUILD_CFLAGS := -Wall
 NOSTDINC_FLAGS :=
 
 obj-y = common.o tap.o
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4d471c2f8a..97f6d85f2f 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -1,6 +1,6 @@
 KBUILD_DEFCONFIG := generic_defconfig
 
-CPPFLAGS += -D__X86__
+KBUILD_CPPFLAGS += -D__X86__
 
 board-$(CONFIG_MACH_X86_GENERIC) := x86_generic
 
@@ -8,15 +8,15 @@ TEXT_BASE = $(CONFIG_TEXT_BASE)
 
 ifeq ($(CONFIG_X86_EFI),y)
 machine-y := efi
-CFLAGS += -fpic -fshort-wchar -mno-sse -mno-mmx
+KBUILD_CFLAGS += -fpic -fshort-wchar -mno-sse -mno-mmx
 ifeq ($(CONFIG_X86_32),y)
 	TARGET = efi-app-ia32
 else
 	TARGET = efi-app-x86_64
 endif
 else
-CPPFLAGS += -fno-strict-aliasing
-CPPFLAGS += -march=i386 -DTEXT_BASE=$(TEXT_BASE) \
+KBUILD_CPPFLAGS += -fno-strict-aliasing
+KBUILD_CPPFLAGS += -march=i386 -DTEXT_BASE=$(TEXT_BASE) \
 	-fno-unwind-tables -fno-asynchronous-unwind-tables
 
 machine-y := i386
@@ -25,32 +25,28 @@ endif
 ifeq ($(CONFIG_X86_32),y)
 	UTS_MACHINE := i386
 	biarch := $(call cc-option,-m32)
-	AFLAGS += $(biarch)
-	CFLAGS += $(biarch)
-	CPPFLAGS += $(biarch)
+	KBUILD_AFLAGS += $(biarch)
+	KBUILD_CFLAGS += $(biarch)
+	KBUILD_CPPFLAGS += $(biarch)
 else
 	UTS_MACHINE := x86_64
-	AFLAGS += -m64
-	CFLAGS += -m64 -mno-red-zone
-	CPPFLAGS += -m64
+	KBUILD_AFLAGS += -m64
+	KBUILD_CFLAGS += -m64 -mno-red-zone
+	KBUILD_CPPFLAGS += -m64
 endif
 
 
 ifndef CONFIG_MODULES
 # Add cleanup flags
 ifneq ($(CONFIG_X86_EFI),y)
-CPPFLAGS += -fdata-sections -ffunction-sections
+KBUILD_CPPFLAGS += -fdata-sections -ffunction-sections
 LDFLAGS_barebox += -static --gc-sections
 endif
 endif
 
 machdirs := $(patsubst %,arch/x86/mach-%/,$(machine-y))
 
-ifeq ($(KBUILD_SRC),)
-CPPFLAGS += $(patsubst %,-I%include,$(machdirs))
-else
-CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
-endif
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
 
 ifneq ($(board-y),)
 BOARD  := arch/x86/boards/$(board-y)/
@@ -74,7 +70,7 @@ ifeq ($(CONFIG_X86_EFI),y)
 lds-$(CONFIG_X86_32)   := arch/x86/mach-efi/elf_ia32_efi.lds
 lds-$(CONFIG_X86_64)   := arch/x86/mach-efi/elf_x86_64_efi.lds
 
-cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@	\
+cmd_barebox__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_barebox) -o $@	\
 		-T $(lds-y)					\
 		-shared -Bsymbolic -nostdlib -znocombreloc	\
 		--start-group $(BAREBOX_OBJS)			\
@@ -89,7 +85,7 @@ quiet_cmd_efi_image = EFI-IMG $@
 
 KBUILD_BINARY := barebox
 
-LDFLAGS := --no-undefined
+KBUILD_LDFLAGS := --no-undefined
 
 barebox.efi: $(KBUILD_BINARY) FORCE
 	$(call if_changed,efi_image)
@@ -104,7 +100,7 @@ lds-$(CONFIG_BOARD_LINKER_SCRIPT)     := $(BOARD)/barebox.lds
 
 endif
 
-LDFLAGS += -m elf_$(UTS_MACHINE)
+KBUILD_LDFLAGS += -m elf_$(UTS_MACHINE)
 
 CLEAN_FILES += $(lds-y)
 CLEAN_FILES    += arch/x86/lib/barebox.lds barebox.map barebox.S
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index b92b4750fc..4a520a2a84 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -1,5 +1,5 @@
 
-CPPFLAGS += -D__I386__ -fno-strict-aliasing -m32 -g -Os -march=i386 \
+KBUILD_CPPFLAGS += -D__I386__ -fno-strict-aliasing -m32 -g -Os -march=i386 \
 	-mregparm=3 -fno-strict-aliasing -fomit-frame-pointer -ffreestanding \
 	-fno-toplevel-reorder -fno-unit-at-a-time -fno-stack-protector \
 	-mpreferred-stack-boundary=2
diff --git a/common/Kconfig b/common/Kconfig
index 44a955c5ff..f514e3b4a2 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -1,8 +1,7 @@
 config DEFCONFIG_LIST
 	string
 	option defconfig_list
-	default ARCH_DEFCONFIG
-	default "arch/$(ARCH)/defconfig"
+	default "arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)"
 
 config GREGORIAN_CALENDER
 	bool
diff --git a/common/Makefile b/common/Makefile
index 84463b4d48..c14af692f9 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -86,11 +86,9 @@ echo "\";"						\
 endef
 endif
 
-include/generated/passwd.h: $(srctree)/$(src)/Makefile FORCE
+include/generated/passwd.h: FORCE
 	$(call filechk,passwd)
 
-targets += include/generated/passwd.h
-
 $(obj)/password.o: include/generated/passwd.h
 endif # CONFIG_PASSWORD
 
diff --git a/common/image.c b/common/image.c
index 04cd86bf9a..fc10ce5fd9 100644
--- a/common/image.c
+++ b/common/image.c
@@ -50,6 +50,7 @@ static table_entry_t arch_name[] = {
 	{ IH_ARCH_MIPS64,	"mips64",	"MIPS 64 Bit",	},
 	{ IH_ARCH_NIOS,		"nios",		"NIOS",		},
 	{ IH_ARCH_NIOS2,	"nios2",	"NIOS II",	},
+	{ IH_ARCH_PPC,		"powerpc",	"PowerPC",	},
 	{ IH_ARCH_PPC,		"ppc",		"PowerPC",	},
 	{ IH_ARCH_S390,		"s390",		"IBM S390",	},
 	{ IH_ARCH_SH,		"sh",		"SuperH",	},
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 3ca6708657..d227619ed4 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -5,8 +5,6 @@ obj-y		+= pci.o bus.o pci_iomap.o
 
 ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
 
-CPPFLAGS += $(ccflags-y)
-
 obj-$(CONFIG_PCI_MVEBU)	+= pci-mvebu.o pci-mvebu-phy.o
 obj-$(CONFIG_PCI_TEGRA) += pci-tegra.o
 obj-$(CONFIG_PCIE_DW) += pcie-designware.o pcie-designware-host.o
diff --git a/firmware/Makefile b/firmware/Makefile
index 3f2c31868a..020d48440d 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -56,7 +56,7 @@ $(patsubst %,$(obj)/pbl-%.gen.o, $(fw-external-y)): $(obj)/pbl-%.gen.o: $(fwdir)
 
 obj-pbl-y			 += $(patsubst %,%.gen.o, $(fw-external-y))
 
-ifeq ($(KBUILD_SRC),)
+ifndef building_out_of_srctree
 # Makefile.build only creates subdirectories for O= builds, but external
 # firmware might live outside the kernel source tree
 _dummy := $(foreach d,$(addprefix $(obj)/,$(dir $(fw-external-y))), $(shell [ -d $(d) ] || mkdir -p $(d)))
diff --git a/images/Makefile b/images/Makefile
index fe29c75e27..0aa4676aea 100644
--- a/images/Makefile
+++ b/images/Makefile
@@ -50,7 +50,7 @@ quiet_cmd_objcopy_bin = OBJCOPYB $@
 pbl-lds := $(obj)/pbl.lds
 extra-y += $(pbl-lds)
 
-$(pbl-lds): $(obj)/../arch/$(ARCH)/lib/pbl.lds.S FORCE
+$(pbl-lds): $(obj)/../arch/$(SRCARCH)/lib/pbl.lds.S FORCE
 	$(call if_changed_dep,cpp_lds_S)
 
 quiet_cmd_elf__ ?= LD      $@
@@ -139,8 +139,8 @@ $(obj)/%.img: $(obj)/$$(FILE_$$(@F))
 	$(Q)if [ -z $(FILE_$(@F)) ]; then echo "FILE_$(@F) empty!"; false; fi
 	$(call if_changed,shipped)
 
-board = $(srctree)/arch/$(ARCH)/boards
-objboard = $(objtree)/arch/$(ARCH)/boards
+board = $(srctree)/arch/$(SRCARCH)/boards
+objboard = $(objtree)/arch/$(SRCARCH)/boards
 
 include $(srctree)/images/Makefile.am33xx
 include $(srctree)/images/Makefile.am35xx
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 919f286162..838ab11e7c 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 ####
 # kbuild: Generic definitions
 
@@ -24,10 +25,18 @@ depfile = $(subst $(comma),_,$(dot-target).d)
 basetarget = $(basename $(notdir $@))
 
 ###
+# real prerequisites without phony targets
+real-prereqs = $(filter-out $(PHONY), $^)
+
+###
 # Escape single quote for use in echo statements
 escsq = $(subst $(squote),'\$(squote)',$1)
 
 ###
+# Quote a string to pass it to C files. foo => '"foo"'
+stringify = $(squote)$(quote)$1$(quote)$(squote)
+
+###
 # Easy method for doing a status message
        kecho := :
  quiet_kecho := echo
@@ -37,11 +46,11 @@ kecho := $($(quiet)kecho)
 ###
 # filechk is used to check if the content of a generated file is updated.
 # Sample usage:
-# define filechk_sample
-#	echo $KERNELRELEASE
-# endef
-# version.h : Makefile
+#
+# filechk_sample = echo $(KERNELRELEASE)
+# version.h: FORCE
 #	$(call filechk,sample)
+#
 # The rule defined shall write to stdout the content of the new file.
 # The existing file will be compared with the new one.
 # - If no file exist it is created
@@ -50,32 +59,31 @@ kecho := $($(quiet)kecho)
 # - stdin is piped in from the first prerequisite ($<) so one has
 #   to specify a valid file as first prerequisite (often the kbuild file)
 define filechk
-	$(Q)set -e;				\
-	$(kecho) '  CHK     $@';		\
-	mkdir -p $(dir $@);			\
-	$(filechk_$(1)) < $< > $@.tmp;		\
-	if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
-		rm -f $@.tmp;			\
-	else					\
-		$(kecho) '  UPD     $@';	\
-		mv -f $@.tmp $@;		\
+	$(Q)set -e;						\
+	mkdir -p $(dir $@);					\
+	trap "rm -f $(dot-target).tmp" EXIT;			\
+	{ $(filechk_$(1)); } > $(dot-target).tmp;		\
+	if [ ! -r $@ ] || ! cmp -s $@ $(dot-target).tmp; then	\
+		$(kecho) '  UPD     $@';			\
+		mv -f $(dot-target).tmp $@;			\
 	fi
 endef
 
 ######
 # gcc support functions
-# See documentation in Documentation/kbuild/makefiles.txt
+# See documentation in Documentation/kbuild/makefiles.rst
 
 # cc-cross-prefix
 # Usage: CROSS_COMPILE := $(call cc-cross-prefix, m68k-linux-gnu- m68k-linux-)
-# Return first prefix where a prefix$(CC) is found in PATH.
-# If no $(CC) found in PATH with listed prefixes return nothing
-cc-cross-prefix =  \
-	$(word 1, $(foreach c,$(1),                                   \
-		$(shell set -e;                                       \
-		if (which $(strip $(c))$(CC)) > /dev/null 2>&1 ; then \
-			echo $(c);                                    \
-		fi)))
+# Return first <prefix> where a <prefix>gcc is found in PATH.
+# If no gcc found in PATH with listed prefixes return nothing
+#
+# Note: '2>/dev/null' is here to force Make to invoke a shell. Otherwise, it
+# would try to directly execute the shell builtin 'command'. This workaround
+# should be kept for a long time since this issue was fixed only after the
+# GNU Make 4.2.1 release.
+cc-cross-prefix = $(firstword $(foreach c, $(1), \
+			$(if $(shell command -v -- $(c)gcc 2>/dev/null), $(c))))
 
 # output directory for tests below
 TMPOUT := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/)
@@ -97,7 +105,7 @@ try-run = $(shell set -e;		\
 # Usage: cflags-y += $(call as-option,-Wa$(comma)-isa=foo,)
 
 as-option = $(call try-run,\
-	$(CC) $(CFLAGS) $(1) -c -xassembler /dev/null -o "$$TMP",$(1),$(2))
+	$(CC) $(KBUILD_CFLAGS) $(1) -c -xassembler /dev/null -o "$$TMP",$(1),$(2))
 
 # as-instr
 # Usage: cflags-y += $(call as-instr,instr,option1,option2)
@@ -109,17 +117,17 @@ as-instr = $(call try-run,\
 # Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
 
 cc-option = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CFLAGS) $(1) -c -xc /dev/null -o "$$TMP",$(1),$(2))
+	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -xc /dev/null -o "$$TMP",$(1),$(2))
 
 # cc-option-yn
 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
 cc-option-yn = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CFLAGS) $(1) -c -xc /dev/null -o "$$TMP",y,n)
+	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -xc /dev/null -o "$$TMP",y,n)
 
 # cc-disable-warning
 # Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
 cc-disable-warning = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CFLAGS) -W$(strip $(1)) -c -xc /dev/null -o "$$TMP",-Wno-$(strip $(1)))
+	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -xc /dev/null -o "$$TMP",-Wno-$(strip $(1)))
 
 # cc-version
 # Usage gcc-ver := $(call cc-version)
@@ -130,7 +138,7 @@ cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
 cc-ifversion = $(shell [ $(call cc-version, $(CC)) $(1) $(2) ] && echo $(3))
 
 # ld-option
-# Usage: LDFLAGS += $(call ld-option, -X)
+# Usage: KBUILD_LDFLAGS += $(call ld-option, -X)
 ld-option = $(call try-run,\
 	$(CC) -x c /dev/null -c -o "$$TMPO" ; $(LD) $(1) "$$TMPO" -o "$$TMP",$(1),$(2))
 
@@ -140,18 +148,13 @@ ld-option = $(call try-run,\
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
 # Usage:
 # $(Q)$(MAKE) $(build)=dir
-build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
+build := -f $(srctree)/scripts/Makefile.build obj
 
 ###
-# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.modbuiltin obj=
-# Usage:
-# $(Q)$(MAKE) $(modbuiltin)=dir
-modbuiltin := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.modbuiltin obj
-
-# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
+# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=
 # Usage:
 # $(Q)$(MAKE) $(clean)=dir
-clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
+clean := -f $(srctree)/scripts/Makefile.clean obj
 
 # Prefix -I with $(srctree) if it is not an absolute path.
 # skip if -I has no parameter
@@ -167,10 +170,7 @@ echo-cmd = $(if $($(quiet)cmd_$(1)),\
 	echo '  $(call escsq,$($(quiet)cmd_$(1)))$(echo-why)';)
 
 # printing commands
-cmd = @$(echo-cmd) $(cmd_$(1))
-
-# Add $(obj)/ for paths that are not absolute
-objectify = $(foreach o,$(1),$(if $(filter /%,$(o)),$(o),$(obj)/$(o)))
+cmd = @set -e; $(echo-cmd) $(cmd_$(1))
 
 ###
 # if_changed      - execute command if any prerequisite is newer than
@@ -178,15 +178,15 @@ objectify = $(foreach o,$(1),$(if $(filter /%,$(o)),$(o),$(obj)/$(o)))
 # if_changed_dep  - as if_changed, but uses fixdep to reveal dependencies
 #                   including used config symbols
 # if_changed_rule - as if_changed but execute rule instead
-# See Documentation/kbuild/makefiles.txt for more info
+# See Documentation/kbuild/makefiles.rst for more info
 
 ifneq ($(KBUILD_NOCMDDEP),1)
-# Check if both arguments are the same including their order. Result is empty
+# Check if both commands are the same including their order. Result is empty
 # string if equal. User may override this check using make KBUILD_NOCMDDEP=1
-arg-check = $(filter-out $(subst $(space),$(space_escape),$(strip $(cmd_$@))), \
+cmd-check = $(filter-out $(subst $(space),$(space_escape),$(strip $(cmd_$@))), \
                          $(subst $(space),$(space_escape),$(strip $(cmd_$1))))
 else
-arg-check = $(if $(strip $(cmd_$@)),,1)
+cmd-check = $(if $(strip $(cmd_$@)),,1)
 endif
 
 # Replace >$< with >$$< to preserve $ when reloading the .cmd file
@@ -197,34 +197,33 @@ endif
 # (needed for the shell)
 make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1)))))
 
-# Find any prerequisites that is newer than target or that does not exist.
+# Find any prerequisites that are newer than target or that do not exist.
+# (This is not true for now; $? should contain any non-existent prerequisites,
+# but it does not work as expected when .SECONDARY is present. This seems a bug
+# of GNU Make.)
 # PHONY targets skipped in both cases.
-any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
+newer-prereqs = $(filter-out $(PHONY),$?)
 
 # Execute command if command has changed or prerequisite(s) are updated.
-#
-if_changed = $(if $(strip $(any-prereq) $(arg-check)),                       \
-	@set -e;                                                             \
-	$(echo-cmd) $(cmd_$(1));                                             \
-	printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd)
+if_changed = $(if $(newer-prereqs)$(cmd-check),                              \
+	$(cmd);                                                              \
+	printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
 
 # Execute the command and also postprocess generated .d dependencies file.
-if_changed_dep = $(if $(strip $(any-prereq) $(arg-check) ),                  \
-	@set -e;                                                             \
-	$(echo-cmd) $(cmd_$(1));                                             \
-	scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;\
-	rm -f $(depfile);                                                    \
-	mv -f $(dot-target).tmp $(dot-target).cmd)
+if_changed_dep = $(if $(newer-prereqs)$(cmd-check),$(cmd_and_fixdep),@:)
+
+cmd_and_fixdep =                                                             \
+	$(cmd);                                                              \
+	scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).cmd;\
+	rm -f $(depfile)
 
 # Usage: $(call if_changed_rule,foo)
 # Will check if $(cmd_foo) or any of the prerequisites changed,
 # and if so will execute $(rule_foo).
-if_changed_rule = $(if $(strip $(any-prereq) $(arg-check) ),                 \
-	@set -e;                                                             \
-	$(rule_$(1)))
+if_changed_rule = $(if $(newer-prereqs)$(cmd-check),$(rule_$(1)),@:)
 
 ###
-# why - tell why a a target got build
+# why - tell why a target got built
 #       enabled by make V=2
 #       Output (listed in the order they are checked):
 #          (1) - due to target is PHONY
@@ -246,8 +245,8 @@ ifeq ($(KBUILD_VERBOSE),2)
 why =                                                                        \
     $(if $(filter $@, $(PHONY)),- due to target is PHONY,                    \
         $(if $(wildcard $@),                                                 \
-            $(if $(strip $(any-prereq)),- due to: $(any-prereq),             \
-                $(if $(arg-check),                                           \
+            $(if $(newer-prereqs),- due to: $(newer-prereqs),                \
+                $(if $(cmd-check),                                           \
                     $(if $(cmd_$@),- due to command line change,             \
                         $(if $(filter $@, $(targets)),                       \
                             - due to missing .cmd file,                      \
diff --git a/scripts/Makefile b/scripts/Makefile
index eb6718fadf..f3b9aece9e 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -26,7 +26,7 @@ hostprogs-$(CONFIG_ARCH_SOCFPGA) += socfpga_mkimage
 hostprogs-$(CONFIG_MXS_HOSTTOOLS)+= mxsimage mxsboot
 hostprogs-$(CONFIG_ARCH_LAYERSCAPE) += pblimage
 hostprogs-$(CONFIG_ARCH_STM32MP) += stm32image
-HOSTCFLAGS += -I$(srctree)/scripts/include/
+KBUILD_HOSTCFLAGS += -I$(srctree)/scripts/include/
 HOSTLDLIBS_mxsimage  = `pkg-config --libs openssl`
 HOSTCFLAGS_omap3-usb-loader.o = `pkg-config --cflags libusb-1.0`
 HOSTLDLIBS_omap3-usb-loader  = `pkg-config --libs libusb-1.0`
@@ -50,7 +50,7 @@ targetprogs-$(CONFIG_IMD_TARGET) += bareboximd-target
 subdir-	+= basic kconfig setupmbr
 
 quiet_cmd_csingle	= CC      $@
-      cmd_csingle	= $(CC) -Wp,-MD,$(depfile) $(TARGETCFLAGS) $(CFLAGS) -o $@ $<
+      cmd_csingle	= $(CC) -Wp,-MD,$(depfile) $(TARGETCFLAGS) $(KBUILD_CFLAGS) -o $@ $<
 
 __targetprogs	:= $(sort $(targetprogs-y) $(targetprogs-m))
 target-csingle	:= $(foreach m,$(__targetprogs),$(if $($(m)-objs),,$(m)))
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 4cac47fdb2..0232158570 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -49,7 +49,7 @@ ifneq ($(hostprogs)$(hostprogs-y)$(hostprogs-m),)
 include scripts/Makefile.host
 endif
 
-ifneq ($(KBUILD_SRC),)
+ifdef building_out_of_srctree
 # Create output directory if not already present
 _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
 
@@ -88,10 +88,10 @@ __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(pbl-target) $(
 # Linus' kernel sanity checking tool
 ifeq ($(KBUILD_CHECKSRC),1)
   quiet_cmd_checksrc       = CHECK   $<
-        cmd_checksrc       = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ;
+        cmd_checksrc       = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
 else ifeq ($(KBUILD_CHECKSRC),2)
   quiet_cmd_force_checksrc = CHECK   $<
-        cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ;
+        cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
 endif
 
 # Compile C sources (.c)
@@ -137,73 +137,23 @@ cmd_cc_i_c       = $(CPP) $(c_flags)   -o $@ $<
 %.i: %.c FORCE
 	$(call if_changed_dep,cc_i_c)
 
-quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
-cmd_cc_symtypes_c	   = \
-		$(CPP) -D__GENKSYMS__ $(c_flags) $<			\
-		| $(GENKSYMS) -T $@ >/dev/null;				\
-		test -s $@ || rm -f $@
-
-%.symtypes : %.c FORCE
-	$(call if_changed_dep,cc_symtypes_c)
-
 # C (.c) files
 # The C file is compiled and updated dependency information is generated.
 # (See cmd_cc_o_c + relevant part of rule_cc_o_c)
 
 quiet_cmd_cc_o_c = CC $(quiet_modtag)  $@
+      cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
 quiet_cmd_pbl_cc_o_c = PBLCC   $@
-
-ifndef CONFIG_MODVERSIONS
-cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
-cmd_pbl_cc_o_c = $(CC) -D__PBL__ $(c_flags) $(PBL_CPPFLAGS) -c -o $@ $<
-
-else
-# When module versioning is enabled the following steps are executed:
-# o compile a .tmp_<file>.o from <file>.c
-# o if .tmp_<file>.o doesn't contain a __ksymtab version, i.e. does
-#   not export symbols, we just rename .tmp_<file>.o to <file>.o and
-#   are done.
-# o otherwise, we calculate symbol versions using the good old
-#   genksyms on the preprocessed source and postprocess them in a way
-#   that they are usable as a linker script
-# o generate <file>.o from .tmp_<file>.o using the linker to
-#   replace the unresolved symbols __crc_exported_symbol with
-#   the actual value of the checksum generated by genksyms
-
-cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $<
-cmd_modversions =							\
-	if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then	\
-		$(CPP) -D__GENKSYMS__ $(c_flags) $<			\
-		| $(GENKSYMS) $(if $(KBUILD_SYMTYPES),			\
-			      -T $(@D)/$(@F:.o=.symtypes)) -a $(ARCH)	\
-		> $(@D)/.tmp_$(@F:.o=.ver);				\
-									\
-		$(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) 		\
-			-T $(@D)/.tmp_$(@F:.o=.ver);			\
-		rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver);	\
-	else								\
-		mv -f $(@D)/.tmp_$(@F) $@;				\
-	fi;
-endif
+      cmd_pbl_cc_o_c = $(CC) -D__PBL__ $(c_flags) $(PBL_CPPFLAGS) -c -o $@ $<
 
 define rule_cc_o_c
-	$(call echo-cmd,checksrc) $(cmd_checksrc)			  \
-	$(call echo-cmd,cc_o_c) $(cmd_cc_o_c);				  \
-	$(cmd_modversions)						  \
-	scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' >    \
-	                                              $(dot-target).tmp;  \
-	rm -f $(depfile);						  \
-	mv -f $(dot-target).tmp $(dot-target).cmd
+	$(call cmd,checksrc)
+	$(call cmd_and_fixdep,cc_o_c)
 endef
 
 define rule_pbl_cc_o_c
-	$(call echo-cmd,checksrc) $(cmd_checksrc)			  \
-	$(call echo-cmd,pbl_cc_o_c) $(cmd_pbl_cc_o_c);			  \
-	$(cmd_modversions)						  \
-	scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,pbl_cc_o_c)' >    \
-	                                              $(dot-target).tmp;  \
-	rm -f $(depfile);						  \
-	mv -f $(dot-target).tmp $(dot-target).cmd
+	$(call cmd,checksrc)
+	$(call cmd_and_fixdep,pbl_cc_o_c)
 endef
 
 # Built-in and composite module parts
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 8f4d62f22e..55b565ce3f 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -81,12 +81,12 @@ obj-dirs += $(host-objdirs)
 #####
 # Handle options to gcc. Support building with separate output directory
 
-_hostc_flags   = $(HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
+_hostc_flags   = $(KBUILD_HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
                  $(HOSTCFLAGS_$(target-stem).o)
-_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
+_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
                  $(HOSTCXXFLAGS_$(target-stem).o)
 
-ifeq ($(KBUILD_SRC),)
+ifndef building_out_of_srctree
 __hostc_flags	= $(_hostc_flags)
 __hostcxx_flags	= $(_hostcxx_flags)
 else
@@ -103,15 +103,15 @@ hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)
 # Create executable from a single .c file
 # host-csingle -> Executable
 quiet_cmd_host-csingle 	= HOSTCC  $@
-      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) $(HOSTLDFLAGS) -o $@ $< \
-		$(HOST_LOADLIBES) $(HOSTLDLIBS_$(target-stem))
+      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
+		$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
 $(host-csingle): $(obj)/%: $(src)/%.c FORCE
 	$(call if_changed_dep,host-csingle)
 
 # Link an executable based on list of .o files, all plain c
 # host-cmulti -> executable
 quiet_cmd_host-cmulti	= HOSTLD  $@
-      cmd_host-cmulti	= $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
+      cmd_host-cmulti	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
 			  $(addprefix $(obj)/, $($(target-stem)-objs)) \
 			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
 $(host-cmulti): FORCE
@@ -128,7 +128,7 @@ $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
 # Link an executable based on list of .o files, a mixture of .c and .cc
 # host-cxxmulti -> executable
 quiet_cmd_host-cxxmulti	= HOSTLD  $@
-      cmd_host-cxxmulti	= $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
+      cmd_host-cxxmulti	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
 			  $(foreach o,objs cxxobjs,\
 			  $(addprefix $(obj)/, $($(target-stem)-$(o)))) \
 			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index d4c2ed15b6..39cc24b196 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -1,5 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0
 # Backward compatibility
+asflags-y  += $(EXTRA_AFLAGS)
+ccflags-y  += $(EXTRA_CFLAGS)
+cppflags-y += $(EXTRA_CPPFLAGS)
+ldflags-y  += $(EXTRA_LDFLAGS)
 always-y   += $(always)
 hostprogs  += $(hostprogs-y) $(hostprogs-m)
 
@@ -128,9 +132,9 @@ basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
 modname_flags  = $(if $(filter 1,$(words $(modname))),\
                  -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
 
-_c_flags       = $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$(target-stem).o)
-_a_flags       = $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$(target-stem).o)
-_cpp_flags     = $(CPPFLAGS) $(EXTRA_CPPFLAGS) $(CPPFLAGS_$(target-stem).lds)
+_c_flags       = $(KBUILD_CFLAGS) $(ccflags-y) $(CFLAGS_$(target-stem).o)
+_a_flags       = $(KBUILD_AFLAGS) $(asflags-y) $(AFLAGS_$(target-stem).o)
+_cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)
 
 ifeq ($(CONFIG_UBSAN),y)
 _CFLAGS_UBSAN   = $(eval _CFLAGS_UBSAN := $(CFLAGS_UBSAN))$(_CFLAGS_UBSAN)
@@ -143,7 +147,7 @@ endif
 # If building barebox in a separate objtree expand all occurrences
 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
 
-ifeq ($(KBUILD_SRC),)
+ifndef building_out_of_srctree
 __c_flags	= $(_c_flags)
 __a_flags	= $(_a_flags)
 __cpp_flags     = $(_cpp_flags)
@@ -158,16 +162,16 @@ __a_flags	=                          $(call flags,_a_flags)
 __cpp_flags     =                          $(call flags,_cpp_flags)
 endif
 
-c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
+c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
 		 $(__c_flags) $(modkern_cflags) \
 		 -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
 
-a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
+a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
 		 $(__a_flags) $(modkern_aflags)
 
 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(__cpp_flags)
 
-ld_flags       = $(LDFLAGS) $(EXTRA_LDFLAGS)
+ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y)
 
 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre -nostdinc                        \
 		 -I$(srctree)/arch/$(SRCARCH)/dts/include		 \
@@ -219,7 +223,7 @@ $(obj)/%:: $(src)/%_shipped
 # ---------------------------------------------------------------------------
 
 quiet_cmd_ld = LD      $@
-cmd_ld = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) \
+cmd_ld = $(LD) $(KBUILD_LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) \
 	       $(filter-out FORCE,$^) -o $@
 
 # Objcopy
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 78e6edd925..78e4ed7189 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -97,7 +97,7 @@ targets += $(modules:.ko=.mod.o)
 
 # Step 6), final link of the modules
 quiet_cmd_ld_ko_o = LD [M]  $@
-      cmd_ld_ko_o = $(LD) -r $(LDFLAGS) $(LDFLAGS_MODULE) -o $@		\
+      cmd_ld_ko_o = $(LD) -r $(KBUILD_LDFLAGS) $(LDFLAGS_MODULE) -o $@		\
 			  $(filter-out FORCE,$^)
 
 $(modules): %.ko :%.o %.mod.o FORCE
diff --git a/scripts/kconfig/.gitignore b/scripts/kconfig/.gitignore
index b5bf92f66d..12a67fdab5 100644
--- a/scripts/kconfig/.gitignore
+++ b/scripts/kconfig/.gitignore
@@ -1,6 +1,4 @@
-#
-# Generated files
-#
+# SPDX-License-Identifier: GPL-2.0-only
 *.moc
 *conf-cfg
 
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 2f1a59fa51..c9d0a4a8ef 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -12,10 +12,6 @@ else
 Kconfig := Kconfig
 endif
 
-ifndef KBUILD_DEFCONFIG
-KBUILD_DEFCONFIG := defconfig
-endif
-
 ifeq ($(quiet),silent_)
 silent := -s
 endif
@@ -47,16 +43,16 @@ build_gconfig: $(obj)/gconf
 build_xconfig: $(obj)/qconf
 
 localyesconfig localmodconfig: $(obj)/conf
-	$(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
-	$(Q)if [ -f .config ]; then 					\
-			cmp -s .tmp.config .config ||			\
-			(mv -f .config .config.old.1;			\
-			 mv -f .tmp.config .config;			\
-			 $< $(silent) --oldconfig $(Kconfig);		\
-			 mv -f .config.old.1 .config.old)		\
-	else								\
-			mv -f .tmp.config .config;			\
-			$< $(silent) --oldconfig $(Kconfig);		\
+	$(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
+	$(Q)if [ -f .config ]; then 				\
+		cmp -s .tmp.config .config ||			\
+		(mv -f .config .config.old.1;			\
+		 mv -f .tmp.config .config;			\
+		 $< $(silent) --oldconfig $(Kconfig);		\
+		 mv -f .config.old.1 .config.old)		\
+	else							\
+		mv -f .tmp.config .config;			\
+		$< $(silent) --oldconfig $(Kconfig);		\
 	fi
 	$(Q)rm -f .tmp.config
 
@@ -67,7 +63,7 @@ localyesconfig localmodconfig: $(obj)/conf
 #  deprecated for external use
 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
 	alldefconfig randconfig listnewconfig olddefconfig syncconfig \
-	helpnewconfig
+	helpnewconfig yes2modconfig mod2yesconfig
 
 PHONY += $(simple-targets)
 
@@ -135,6 +131,8 @@ help:
 	@echo  '  allmodconfig	  - New config selecting modules when possible'
 	@echo  '  alldefconfig    - New config with all symbols set to default'
 	@echo  '  randconfig	  - New config with random answer to all options'
+	@echo  '  yes2modconfig	  - Change answers from yes to mod if possible'
+	@echo  '  mod2yesconfig	  - Change answers from mod to yes if possible'
 	@echo  '  listnewconfig   - List new options'
 	@echo  '  helpnewconfig   - List new options and help text'
 	@echo  '  olddefconfig	  - Same as oldconfig but sets new symbols to their'
@@ -155,11 +153,11 @@ HOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)
 HOSTCFLAGS_parser.tab.o	:= -I $(srctree)/$(src)
 
 # conf: Used for defconfig, oldconfig and related targets
-hostprogs-y	+= conf
+hostprogs	+= conf
 conf-objs	:= conf.o $(common-objs)
 
 # nconf: Used for the nconfig target based on ncurses
-hostprogs-y	+= nconf
+hostprogs	+= nconf
 nconf-objs	:= nconf.o nconf.gui.o $(common-objs)
 
 HOSTLDLIBS_nconf	= $(shell . $(obj)/nconf-cfg && echo $$libs)
@@ -169,7 +167,7 @@ HOSTCFLAGS_nconf.gui.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags)
 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
 
 # mconf: Used for the menuconfig target based on lxdialog
-hostprogs-y	+= mconf
+hostprogs	+= mconf
 lxdialog	:= $(addprefix lxdialog/, \
 		     checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
 mconf-objs	:= mconf.o $(lxdialog) $(common-objs)
@@ -181,7 +179,7 @@ $(foreach f, mconf.o $(lxdialog), \
 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
 
 # qconf: Used for the xconfig target based on Qt
-hostprogs-y	+= qconf
+hostprogs	+= qconf
 qconf-cxxobjs	:= qconf.o
 qconf-objs	:= images.o $(common-objs)
 
@@ -197,7 +195,7 @@ $(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
 	$(call cmd,moc)
 
 # gconf: Used for the gconfig target based on GTK+
-hostprogs-y	+= gconf
+hostprogs	+= gconf
 gconf-objs	:= gconf.o images.o $(common-objs)
 
 HOSTLDLIBS_gconf    = $(shell . $(obj)/gconf-cfg && echo $$libs)
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 1f89bf1558..f6e548b8f7 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -34,6 +34,8 @@ enum input_mode {
 	listnewconfig,
 	helpnewconfig,
 	olddefconfig,
+	yes2modconfig,
+	mod2yesconfig,
 };
 static enum input_mode input_mode = oldaskconfig;
 
@@ -467,6 +469,8 @@ static struct option long_opts[] = {
 	{"listnewconfig",   no_argument,       NULL, listnewconfig},
 	{"helpnewconfig",   no_argument,       NULL, helpnewconfig},
 	{"olddefconfig",    no_argument,       NULL, olddefconfig},
+	{"yes2modconfig",   no_argument,       NULL, yes2modconfig},
+	{"mod2yesconfig",   no_argument,       NULL, mod2yesconfig},
 	{NULL, 0, NULL, 0}
 };
 
@@ -489,6 +493,8 @@ static void conf_usage(const char *progname)
 	printf("  --allmodconfig          New config where all options are answered with mod\n");
 	printf("  --alldefconfig          New config with all symbols set to default\n");
 	printf("  --randconfig            New config with random answer to all options\n");
+	printf("  --yes2modconfig         Change answers from yes to mod if possible\n");
+	printf("  --mod2yesconfig         Change answers from mod to yes if possible\n");
 }
 
 int main(int ac, char **av)
@@ -553,6 +559,8 @@ int main(int ac, char **av)
 		case listnewconfig:
 		case helpnewconfig:
 		case olddefconfig:
+		case yes2modconfig:
+		case mod2yesconfig:
 			break;
 		case '?':
 			conf_usage(progname);
@@ -587,6 +595,8 @@ int main(int ac, char **av)
 	case listnewconfig:
 	case helpnewconfig:
 	case olddefconfig:
+	case yes2modconfig:
+	case mod2yesconfig:
 		conf_read(NULL);
 		break;
 	case allnoconfig:
@@ -660,6 +670,12 @@ int main(int ac, char **av)
 		break;
 	case savedefconfig:
 		break;
+	case yes2modconfig:
+		conf_rewrite_mod_or_yes(def_y2m);
+		break;
+	case mod2yesconfig:
+		conf_rewrite_mod_or_yes(def_m2y);
+		break;
 	case oldaskconfig:
 		rootEntry = &rootmenu;
 		conf(&rootmenu);
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 3569d2dec3..a39d93e3c6 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -710,25 +710,6 @@ static struct conf_printer header_printer_cb =
 	.print_comment = header_print_comment,
 };
 
-/*
- * Tristate printer
- *
- * This printer is used when generating the `include/config/tristate.conf' file.
- */
-static void
-tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
-{
-
-	if (sym->type == S_TRISTATE && *value != 'n')
-		fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
-}
-
-static struct conf_printer tristate_printer_cb =
-{
-	.print_symbol = tristate_print_symbol,
-	.print_comment = kconfig_print_comment,
-};
-
 static void conf_write_symbol(FILE *fp, struct symbol *sym,
 			      struct conf_printer *printer, void *printer_arg)
 {
@@ -1062,7 +1043,7 @@ int conf_write_autoconf(int overwrite)
 	struct symbol *sym;
 	const char *name;
 	const char *autoconf_name = conf_get_autoconfig_name();
-	FILE *out, *tristate, *out_h;
+	FILE *out, *out_h;
 	int i;
 
 	if (!overwrite && is_present(autoconf_name))
@@ -1077,23 +1058,13 @@ int conf_write_autoconf(int overwrite)
 	if (!out)
 		return 1;
 
-	tristate = fopen(".tmpconfig_tristate", "w");
-	if (!tristate) {
-		fclose(out);
-		return 1;
-	}
-
 	out_h = fopen(".tmpconfig.h", "w");
 	if (!out_h) {
 		fclose(out);
-		fclose(tristate);
 		return 1;
 	}
 
 	conf_write_heading(out, &kconfig_printer_cb, NULL);
-
-	conf_write_heading(tristate, &tristate_printer_cb, NULL);
-
 	conf_write_heading(out_h, &header_printer_cb, NULL);
 
 	for_all_symbols(i, sym) {
@@ -1101,15 +1072,11 @@ int conf_write_autoconf(int overwrite)
 		if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
 			continue;
 
-		/* write symbol to auto.conf, tristate and header files */
+		/* write symbols to auto.conf and autoconf.h */
 		conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
-
-		conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
-
 		conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
 	}
 	fclose(out);
-	fclose(tristate);
 	fclose(out_h);
 
 	name = getenv("KCONFIG_AUTOHEADER");
@@ -1120,14 +1087,6 @@ int conf_write_autoconf(int overwrite)
 	if (rename(".tmpconfig.h", name))
 		return 1;
 
-	name = getenv("KCONFIG_TRISTATE");
-	if (!name)
-		name = "include/config/tristate.conf";
-	if (make_parent_dir(name))
-		return 1;
-	if (rename(".tmpconfig_tristate", name))
-		return 1;
-
 	if (make_parent_dir(autoconf_name))
 		return 1;
 	/*
@@ -1353,7 +1312,7 @@ bool conf_set_all_new_symbols(enum conf_def_mode mode)
 
 		sym_calc_value(csym);
 		if (mode == def_random)
-			has_changed = randomize_choice_values(csym);
+			has_changed |= randomize_choice_values(csym);
 		else {
 			set_all_choice_values(csym);
 			has_changed = true;
@@ -1362,3 +1321,18 @@ bool conf_set_all_new_symbols(enum conf_def_mode mode)
 
 	return has_changed;
 }
+
+void conf_rewrite_mod_or_yes(enum conf_def_mode mode)
+{
+	struct symbol *sym;
+	int i;
+	tristate old_val = (mode == def_y2m) ? yes : mod;
+	tristate new_val = (mode == def_y2m) ? mod : yes;
+
+	for_all_symbols(i, sym) {
+		if (sym_get_type(sym) == S_TRISTATE &&
+		    sym->def[S_DEF_USER].tri == old_val)
+			sym->def[S_DEF_USER].tri = new_val;
+	}
+	sym_clear_all_valid();
+}
diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
index 9f1de58e9f..81ebf8108c 100644
--- a/scripts/kconfig/expr.c
+++ b/scripts/kconfig/expr.c
@@ -13,7 +13,6 @@
 
 #define DEBUG_EXPR	0
 
-static int expr_eq(struct expr *e1, struct expr *e2);
 static struct expr *expr_eliminate_yn(struct expr *e);
 
 struct expr *expr_alloc_symbol(struct symbol *sym)
@@ -250,7 +249,7 @@ void expr_eliminate_eq(struct expr **ep1, struct expr **ep2)
  * equals some operand in the other (operands do not need to appear in the same
  * order), recursively.
  */
-static int expr_eq(struct expr *e1, struct expr *e2)
+int expr_eq(struct expr *e1, struct expr *e2)
 {
 	int res, old_count;
 
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 017843c9a4..5c3443692f 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -191,7 +191,6 @@ enum prop_type {
 
 struct property {
 	struct property *next;     /* next property - null if last */
-	struct symbol *sym;        /* the symbol for which the property is associated */
 	enum prop_type type;       /* type of property */
 	const char *text;          /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
 	struct expr_value visible;
@@ -301,6 +300,7 @@ struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
 struct expr *expr_copy(const struct expr *org);
 void expr_free(struct expr *e);
 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
+int expr_eq(struct expr *e1, struct expr *e2);
 tristate expr_calc_value(struct expr *e);
 struct expr *expr_trans_bool(struct expr *e);
 struct expr *expr_eliminate_dups(struct expr *e);
diff --git a/scripts/kconfig/gconf.c b/scripts/kconfig/gconf.c
index e36b342f10..5527482c30 100644
--- a/scripts/kconfig/gconf.c
+++ b/scripts/kconfig/gconf.c
@@ -18,6 +18,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
 #include <unistd.h>
 #include <time.h>
 
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 4fb16f3166..d4ca829736 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -34,6 +34,8 @@ enum conf_def_mode {
 	def_default,
 	def_yes,
 	def_mod,
+	def_y2m,
+	def_m2y,
 	def_no,
 	def_random
 };
@@ -52,6 +54,7 @@ const char *conf_get_configname(void);
 void sym_set_change_count(int count);
 void sym_add_change_count(int count);
 bool conf_set_all_new_symbols(enum conf_def_mode mode);
+void conf_rewrite_mod_or_yes(enum conf_def_mode mode);
 void set_all_choice_values(struct symbol *csym);
 
 /* confdata.c and expr.c */
@@ -112,7 +115,6 @@ struct symbol *sym_choice_default(struct symbol *sym);
 struct property *sym_get_range_prop(struct symbol *sym);
 const char *sym_get_string_default(struct symbol *sym);
 struct symbol *sym_check_deps(struct symbol *sym);
-struct property *prop_alloc(enum prop_type type, struct symbol *sym);
 struct symbol *prop_get_symbol(struct property *prop);
 
 static inline tristate sym_get_tristate_value(struct symbol *sym)
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 49c26ea9dd..4063dbc1b9 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -15,6 +15,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h>
 #include <signal.h>
 #include <unistd.h>
 
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index d9d1646985..e436ba44c9 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -124,61 +124,76 @@ void menu_set_type(int type)
 		sym_type_name(sym->type), sym_type_name(type));
 }
 
-static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
+static struct property *menu_add_prop(enum prop_type type, struct expr *expr,
+				      struct expr *dep)
 {
-	struct property *prop = prop_alloc(type, current_entry->sym);
+	struct property *prop;
 
+	prop = xmalloc(sizeof(*prop));
+	memset(prop, 0, sizeof(*prop));
+	prop->type = type;
+	prop->file = current_file;
+	prop->lineno = zconf_lineno();
 	prop->menu = current_entry;
 	prop->expr = expr;
 	prop->visible.expr = dep;
 
-	if (prompt) {
-		if (isspace(*prompt)) {
-			prop_warn(prop, "leading whitespace ignored");
-			while (isspace(*prompt))
-				prompt++;
-		}
-		if (current_entry->prompt && current_entry != &rootmenu)
-			prop_warn(prop, "prompt redefined");
+	/* append property to the prop list of symbol */
+	if (current_entry->sym) {
+		struct property **propp;
 
-		/* Apply all upper menus' visibilities to actual prompts. */
-		if(type == P_PROMPT) {
-			struct menu *menu = current_entry;
+		for (propp = &current_entry->sym->prop;
+		     *propp;
+		     propp = &(*propp)->next)
+			;
+		*propp = prop;
+	}
 
-			while ((menu = menu->parent) != NULL) {
-				struct expr *dup_expr;
+	return prop;
+}
 
-				if (!menu->visibility)
-					continue;
-				/*
-				 * Do not add a reference to the
-				 * menu's visibility expression but
-				 * use a copy of it.  Otherwise the
-				 * expression reduction functions
-				 * will modify expressions that have
-				 * multiple references which can
-				 * cause unwanted side effects.
-				 */
-				dup_expr = expr_copy(menu->visibility);
+struct property *menu_add_prompt(enum prop_type type, char *prompt,
+				 struct expr *dep)
+{
+	struct property *prop = menu_add_prop(type, NULL, dep);
 
-				prop->visible.expr
-					= expr_alloc_and(prop->visible.expr,
-							 dup_expr);
-			}
-		}
+	if (isspace(*prompt)) {
+		prop_warn(prop, "leading whitespace ignored");
+		while (isspace(*prompt))
+			prompt++;
+	}
+	if (current_entry->prompt)
+		prop_warn(prop, "prompt redefined");
 
-		current_entry->prompt = prop;
+	/* Apply all upper menus' visibilities to actual prompts. */
+	if (type == P_PROMPT) {
+		struct menu *menu = current_entry;
+
+		while ((menu = menu->parent) != NULL) {
+			struct expr *dup_expr;
+
+			if (!menu->visibility)
+				continue;
+			/*
+			 * Do not add a reference to the menu's visibility
+			 * expression but use a copy of it. Otherwise the
+			 * expression reduction functions will modify
+			 * expressions that have multiple references which
+			 * can cause unwanted side effects.
+			 */
+			dup_expr = expr_copy(menu->visibility);
+
+			prop->visible.expr = expr_alloc_and(prop->visible.expr,
+							    dup_expr);
+		}
 	}
+
+	current_entry->prompt = prop;
 	prop->text = prompt;
 
 	return prop;
 }
 
-struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
-{
-	return menu_add_prop(type, prompt, NULL, dep);
-}
-
 void menu_add_visibility(struct expr *expr)
 {
 	current_entry->visibility = expr_alloc_and(current_entry->visibility,
@@ -187,12 +202,12 @@ void menu_add_visibility(struct expr *expr)
 
 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
 {
-	menu_add_prop(type, NULL, expr, dep);
+	menu_add_prop(type, expr, dep);
 }
 
 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 {
-	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
+	menu_add_prop(type, expr_alloc_symbol(sym), dep);
 }
 
 void menu_add_option_modules(void)
@@ -326,12 +341,10 @@ void menu_finalize(struct menu *parent)
 			 * choice value symbols.
 			 */
 			parentdep = expr_alloc_symbol(sym);
-		} else if (parent->prompt)
-			/* Menu node for 'menu' */
-			parentdep = parent->prompt->visible.expr;
-		else
-			/* Menu node for 'if' */
+		} else {
+			/* Menu node for 'menu', 'if' */
 			parentdep = parent->dep;
+		}
 
 		/* For each child menu node... */
 		for (menu = parent->list; menu; menu = menu->next) {
@@ -698,6 +711,21 @@ const char *menu_get_help(struct menu *menu)
 		return "";
 }
 
+static void get_def_str(struct gstr *r, struct menu *menu)
+{
+	str_printf(r, "Defined at %s:%d\n",
+		   menu->file->name, menu->lineno);
+}
+
+static void get_dep_str(struct gstr *r, struct expr *expr, const char *prefix)
+{
+	if (!expr_is_yes(expr)) {
+		str_append(r, prefix);
+		expr_gstr_print(expr, r);
+		str_append(r, "\n");
+	}
+}
+
 static void get_prompt_str(struct gstr *r, struct property *prop,
 			   struct list_head *head)
 {
@@ -705,7 +733,20 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
 	struct menu *submenu[8], *menu, *location = NULL;
 	struct jump_key *jump = NULL;
 
-	str_printf(r, "Prompt: %s\n", prop->text);
+	str_printf(r, "  Prompt: %s\n", prop->text);
+
+	get_dep_str(r, prop->menu->dep, "  Depends on: ");
+	/*
+	 * Most prompts in Linux have visibility that exactly matches their
+	 * dependencies. For these, we print only the dependencies to improve
+	 * readability. However, prompts with inline "if" expressions and
+	 * prompts with a parent that has a "visible if" expression have
+	 * differing dependencies and visibility. In these rare cases, we
+	 * print both.
+	 */
+	if (!expr_eq(prop->menu->dep, prop->visible.expr))
+		get_dep_str(r, prop->visible.expr, "  Visible if: ");
+
 	menu = prop->menu->parent;
 	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
 		bool accessible = menu_is_visible(menu);
@@ -755,18 +796,6 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
 	}
 }
 
-/*
- * get property of type P_SYMBOL
- */
-static struct property *get_symbol_prop(struct symbol *sym)
-{
-	struct property *prop = NULL;
-
-	for_all_properties(sym, prop, P_SYMBOL)
-		break;
-	return prop;
-}
-
 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
 				 enum prop_type tok, const char *prefix)
 {
@@ -806,32 +835,34 @@ static void get_symbol_str(struct gstr *r, struct symbol *sym,
 			}
 		}
 	}
-	for_all_prompts(sym, prop)
-		get_prompt_str(r, prop, head);
-
-	prop = get_symbol_prop(sym);
-	if (prop) {
-		str_printf(r, "  Defined at %s:%d\n", prop->menu->file->name,
-			prop->menu->lineno);
-		if (!expr_is_yes(prop->visible.expr)) {
-			str_append(r, "  Depends on: ");
-			expr_gstr_print(prop->visible.expr, r);
-			str_append(r, "\n");
+
+	/* Print the definitions with prompts before the ones without */
+	for_all_properties(sym, prop, P_SYMBOL) {
+		if (prop->menu->prompt) {
+			get_def_str(r, prop->menu);
+			get_prompt_str(r, prop->menu->prompt, head);
+		}
+	}
+
+	for_all_properties(sym, prop, P_SYMBOL) {
+		if (!prop->menu->prompt) {
+			get_def_str(r, prop->menu);
+			get_dep_str(r, prop->menu->dep, "  Depends on: ");
 		}
 	}
 
-	get_symbol_props_str(r, sym, P_SELECT, "  Selects: ");
+	get_symbol_props_str(r, sym, P_SELECT, "Selects: ");
 	if (sym->rev_dep.expr) {
-		expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "  Selected by [y]:\n");
-		expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "  Selected by [m]:\n");
-		expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "  Selected by [n]:\n");
+		expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n");
+		expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n");
+		expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n");
 	}
 
-	get_symbol_props_str(r, sym, P_IMPLY, "  Implies: ");
+	get_symbol_props_str(r, sym, P_IMPLY, "Implies: ");
 	if (sym->implied.expr) {
-		expr_gstr_print_revdep(sym->implied.expr, r, yes, "  Implied by [y]:\n");
-		expr_gstr_print_revdep(sym->implied.expr, r, mod, "  Implied by [m]:\n");
-		expr_gstr_print_revdep(sym->implied.expr, r, no, "  Implied by [n]:\n");
+		expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n");
+		expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n");
+		expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n");
 	}
 
 	str_append(r, "\n\n");
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index b7c1ef7571..daf1c1506e 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -8,6 +8,7 @@
 #define _GNU_SOURCE
 #endif
 #include <string.h>
+#include <strings.h>
 #include <stdlib.h>
 
 #include "lkc.h"
diff --git a/scripts/kconfig/parser.y b/scripts/kconfig/parser.y
index b3eff9613c..708b6c4b13 100644
--- a/scripts/kconfig/parser.y
+++ b/scripts/kconfig/parser.y
@@ -90,7 +90,6 @@ static struct menu *current_menu, *current_entry;
 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
 %nonassoc T_NOT
 
-%type <string> prompt
 %type <symbol> nonconst_symbol
 %type <symbol> symbol
 %type <type> type logic_type default
@@ -113,7 +112,7 @@ input: mainmenu_stmt stmt_list | stmt_list;
 
 /* mainmenu entry */
 
-mainmenu_stmt: T_MAINMENU prompt T_EOL
+mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
 {
 	menu_add_prompt(P_MENU, $2, NULL);
 };
@@ -181,7 +180,7 @@ config_option: type prompt_stmt_opt T_EOL
 		$1);
 };
 
-config_option: T_PROMPT prompt if_expr T_EOL
+config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 {
 	menu_add_prompt(P_PROMPT, $2, $3);
 	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
@@ -265,7 +264,7 @@ choice_option_list:
 	| choice_option_list help
 ;
 
-choice_option: T_PROMPT prompt if_expr T_EOL
+choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 {
 	menu_add_prompt(P_PROMPT, $2, $3);
 	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
@@ -334,7 +333,7 @@ if_stmt: if_entry stmt_list if_end
 
 /* menu entry */
 
-menu: T_MENU prompt T_EOL
+menu: T_MENU T_WORD_QUOTE T_EOL
 {
 	menu_add_entry(NULL);
 	menu_add_prompt(P_MENU, $2, NULL);
@@ -363,7 +362,7 @@ menu_option_list:
 	| menu_option_list depends
 ;
 
-source_stmt: T_SOURCE prompt T_EOL
+source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
 {
 	printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
 	zconf_nextfile($2);
@@ -372,7 +371,7 @@ source_stmt: T_SOURCE prompt T_EOL
 
 /* comment entry */
 
-comment: T_COMMENT prompt T_EOL
+comment: T_COMMENT T_WORD_QUOTE T_EOL
 {
 	menu_add_entry(NULL);
 	menu_add_prompt(P_COMMENT, $2, NULL);
@@ -429,15 +428,11 @@ visible: T_VISIBLE if_expr T_EOL
 
 prompt_stmt_opt:
 	  /* empty */
-	| prompt if_expr
+	| T_WORD_QUOTE if_expr
 {
 	menu_add_prompt(P_PROMPT, $1, $2);
 };
 
-prompt:	  T_WORD
-	| T_WORD_QUOTE
-;
-
 end:	  T_ENDMENU T_EOL	{ $$ = "menu"; }
 	| T_ENDCHOICE T_EOL	{ $$ = "choice"; }
 	| T_ENDIF T_EOL		{ $$ = "if"; }
@@ -665,7 +660,7 @@ static void print_symbol(FILE *out, struct menu *menu)
 			break;
 		case P_SYMBOL:
 			fputs( "  symbol ", out);
-			fprintf(out, "%s\n", prop->sym->name);
+			fprintf(out, "%s\n", prop->menu->sym->name);
 			break;
 		default:
 			fprintf(out, "  unknown prop %d!\n", prop->type);
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 82773cc35d..c0ac8f7b5f 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -154,9 +154,9 @@ void ConfigItem::updateMenu(void)
 
 		if (!sym_is_changeable(sym) && list->optMode == normalOpt) {
 			setPixmap(promptColIdx, QIcon());
-			setText(noColIdx, QString::null);
-			setText(modColIdx, QString::null);
-			setText(yesColIdx, QString::null);
+			setText(noColIdx, QString());
+			setText(modColIdx, QString());
+			setText(yesColIdx, QString());
 			break;
 		}
 		expr = sym_get_tristate_value(sym);
@@ -276,7 +276,7 @@ void ConfigLineEdit::show(ConfigItem* i)
 	if (sym_get_string_value(item->menu->sym))
 		setText(QString::fromLocal8Bit(sym_get_string_value(item->menu->sym)));
 	else
-		setText(QString::null);
+		setText(QString());
 	Parent::show();
 	setFocus();
 }
@@ -309,8 +309,6 @@ ConfigList::ConfigList(ConfigView* p, const char *name)
 	  showName(false), showRange(false), showData(false), mode(singleMode), optMode(normalOpt),
 	  rootEntry(0), headerPopup(0)
 {
-	int i;
-
 	setObjectName(name);
 	setSortingEnabled(false);
 	setRootIsDecorated(true);
@@ -318,7 +316,10 @@ ConfigList::ConfigList(ConfigView* p, const char *name)
 	setVerticalScrollMode(ScrollPerPixel);
 	setHorizontalScrollMode(ScrollPerPixel);
 
-	setHeaderLabels(QStringList() << "Option" << "Name" << "N" << "M" << "Y" << "Value");
+	if (mode == symbolMode)
+		setHeaderLabels(QStringList() << "Item" << "Name" << "N" << "M" << "Y" << "Value");
+	else
+		setHeaderLabels(QStringList() << "Option" << "Name" << "N" << "M" << "Y" << "Value");
 
 	connect(this, SIGNAL(itemSelectionChanged(void)),
 		SLOT(updateSelection(void)));
@@ -399,6 +400,11 @@ void ConfigList::updateSelection(void)
 	struct menu *menu;
 	enum prop_type type;
 
+	if (mode == symbolMode)
+		setHeaderLabels(QStringList() << "Item" << "Name" << "N" << "M" << "Y" << "Value");
+	else
+		setHeaderLabels(QStringList() << "Option" << "Name" << "N" << "M" << "Y" << "Value");
+
 	if (selectedItems().count() == 0)
 		return;
 
@@ -627,7 +633,7 @@ void ConfigList::updateMenuList(ConfigItem *parent, struct menu* menu)
 			last = item;
 			continue;
 		}
-	hide:
+hide:
 		if (item && item->menu == child) {
 			last = parent->firstChild();
 			if (last == item)
@@ -692,7 +698,7 @@ void ConfigList::updateMenuList(ConfigList *parent, struct menu* menu)
 			last = item;
 			continue;
 		}
-	hide:
+hide:
 		if (item && item->menu == child) {
 			last = (ConfigItem*)parent->topLevelItem(0);
 			if (last == item)
@@ -736,7 +742,10 @@ void ConfigList::keyPressEvent(QKeyEvent* ev)
 		type = menu->prompt ? menu->prompt->type : P_UNKNOWN;
 		if (type == P_MENU && rootEntry != menu &&
 		    mode != fullMode && mode != menuMode) {
-			emit menuSelected(menu);
+			if (mode == menuMode)
+				emit menuSelected(menu);
+			else
+				emit itemSelected(menu);
 			break;
 		}
 	case Qt::Key_Space:
@@ -828,7 +837,7 @@ void ConfigList::mouseMoveEvent(QMouseEvent* e)
 
 void ConfigList::mouseDoubleClickEvent(QMouseEvent* e)
 {
-	QPoint p = e->pos(); // TODO: Check if this works(was contentsToViewport).
+	QPoint p = e->pos();
 	ConfigItem* item = (ConfigItem*)itemAt(p);
 	struct menu *menu;
 	enum prop_type ptype;
@@ -843,9 +852,12 @@ void ConfigList::mouseDoubleClickEvent(QMouseEvent* e)
 	if (!menu)
 		goto skip;
 	ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
-	if (ptype == P_MENU && (mode == singleMode || mode == symbolMode))
-		emit menuSelected(menu);
-	else if (menu->sym)
+	if (ptype == P_MENU) {
+		if (mode == singleMode)
+			emit itemSelected(menu);
+		else if (mode == symbolMode)
+			emit menuSelected(menu);
+	} else if (menu->sym)
 		changeValue(item);
 
 skip:
@@ -1225,10 +1237,11 @@ QMenu* ConfigInfoView::createStandardContextMenu(const QPoint & pos)
 {
 	QMenu* popup = Parent::createStandardContextMenu(pos);
 	QAction* action = new QAction("Show Debug Info", popup);
-	  action->setCheckable(true);
-	  connect(action, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
-	  connect(this, SIGNAL(showDebugChanged(bool)), action, SLOT(setOn(bool)));
-	  action->setChecked(showDebug());
+
+	action->setCheckable(true);
+	connect(action, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
+	connect(this, SIGNAL(showDebugChanged(bool)), action, SLOT(setOn(bool)));
+	action->setChecked(showDebug());
 	popup->addSeparator();
 	popup->addAction(action);
 	return popup;
@@ -1354,21 +1367,32 @@ ConfigMainWindow::ConfigMainWindow(void)
 	if ((x.isValid())&&(y.isValid()))
 		move(x.toInt(), y.toInt());
 
-	split1 = new QSplitter(this);
+	QWidget *widget = new QWidget(this);
+	QVBoxLayout *layout = new QVBoxLayout(widget);
+	setCentralWidget(widget);
+
+	split1 = new QSplitter(widget);
 	split1->setOrientation(Qt::Horizontal);
-	setCentralWidget(split1);
+	split1->setChildrenCollapsible(false);
 
-	menuView = new ConfigView(split1, "menu");
+	menuView = new ConfigView(widget, "menu");
 	menuList = menuView->list;
 
-	split2 = new QSplitter(split1);
+	split2 = new QSplitter(widget);
+	split2->setChildrenCollapsible(false);
 	split2->setOrientation(Qt::Vertical);
 
 	// create config tree
-	configView = new ConfigView(split2, "config");
+	configView = new ConfigView(widget, "config");
 	configList = configView->list;
 
-	helpText = new ConfigInfoView(split2, "help");
+	helpText = new ConfigInfoView(widget, "help");
+
+	layout->addWidget(split2);
+	split2->addWidget(split1);
+	split1->addWidget(configView);
+	split1->addWidget(menuView);
+	split2->addWidget(helpText);
 
 	setTabOrder(configList, helpText);
 	configList->setFocus();
@@ -1486,6 +1510,8 @@ ConfigMainWindow::ConfigMainWindow(void)
 		helpText, SLOT(setInfo(struct menu *)));
 	connect(configList, SIGNAL(menuSelected(struct menu *)),
 		SLOT(changeMenu(struct menu *)));
+	connect(configList, SIGNAL(itemSelected(struct menu *)),
+		SLOT(changeItens(struct menu *)));
 	connect(configList, SIGNAL(parentSelected()),
 		SLOT(goBack()));
 	connect(menuList, SIGNAL(menuChanged(struct menu *)),
@@ -1582,15 +1608,26 @@ void ConfigMainWindow::searchConfig(void)
 	searchWindow->show();
 }
 
-void ConfigMainWindow::changeMenu(struct menu *menu)
+void ConfigMainWindow::changeItens(struct menu *menu)
 {
 	configList->setRootMenu(menu);
+
 	if (configList->rootEntry->parent == &rootmenu)
 		backAction->setEnabled(false);
 	else
 		backAction->setEnabled(true);
 }
 
+void ConfigMainWindow::changeMenu(struct menu *menu)
+{
+	menuList->setRootMenu(menu);
+
+	if (menuList->rootEntry->parent == &rootmenu)
+		backAction->setEnabled(false);
+	else
+		backAction->setEnabled(true);
+}
+
 void ConfigMainWindow::setMenuLink(struct menu *menu)
 {
 	struct menu *parent;
@@ -1700,14 +1737,14 @@ void ConfigMainWindow::showSplitView(void)
 	fullViewAction->setEnabled(true);
 	fullViewAction->setChecked(false);
 
-	configList->mode = symbolMode;
+	configList->mode = menuMode;
 	if (configList->rootEntry == &rootmenu)
 		configList->updateListAll();
 	else
 		configList->setRootMenu(&rootmenu);
 	configList->setAllOpen(true);
 	configApp->processEvents();
-	menuList->mode = menuMode;
+	menuList->mode = symbolMode;
 	menuList->setRootMenu(&rootmenu);
 	menuList->setAllOpen(true);
 	menuView->show();
@@ -1735,7 +1772,6 @@ void ConfigMainWindow::showFullView(void)
 
 /*
  * ask for saving configuration before quitting
- * TODO ask only when something changed
  */
 void ConfigMainWindow::closeEvent(QCloseEvent* e)
 {
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
index 45bfe9b2b9..c879d79ce8 100644
--- a/scripts/kconfig/qconf.h
+++ b/scripts/kconfig/qconf.h
@@ -71,6 +71,7 @@ public slots:
 signals:
 	void menuChanged(struct menu *menu);
 	void menuSelected(struct menu *menu);
+	void itemSelected(struct menu *menu);
 	void parentSelected(void);
 	void gotFocus(struct menu *);
 
@@ -298,6 +299,7 @@ public:
 	ConfigMainWindow(void);
 public slots:
 	void changeMenu(struct menu *);
+	void changeItens(struct menu *);
 	void setMenuLink(struct menu *);
 	void listFocusChanged(void);
 	void goBack(void);
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 08d76d7b3b..e2f8504f5a 100755
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -56,8 +56,6 @@ sub dprint {
     print STDERR @_;
 }
 
-my $config = ".config";
-
 my $uname = `uname -r`;
 chomp $uname;
 
@@ -374,7 +372,7 @@ if (defined($lsmod_file)) {
 	    $lsmod = "$dir/lsmod";
 	    last;
 	}
-}
+    }
     if (!defined($lsmod)) {
 	# try just the path
 	$lsmod = "lsmod";
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index f56eec5ea4..3dc81397d0 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -221,7 +221,7 @@ static void sym_calc_visibility(struct symbol *sym)
 		sym_set_changed(sym);
 	}
 	tri = no;
-	if (sym->implied.expr && sym->dir_dep.tri != no)
+	if (sym->implied.expr)
 		tri = expr_calc_value(sym->implied.expr);
 	if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
 		tri = yes;
@@ -394,6 +394,8 @@ void sym_calc_value(struct symbol *sym)
 				if (sym->implied.tri != no) {
 					sym->flags |= SYMBOL_WRITE;
 					newval.tri = EXPR_OR(newval.tri, sym->implied.tri);
+					newval.tri = EXPR_AND(newval.tri,
+							      sym->dir_dep.tri);
 				}
 			}
 		calc_newval:
@@ -401,8 +403,7 @@ void sym_calc_value(struct symbol *sym)
 				sym_warn_unmet_dep(sym);
 			newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
 		}
-		if (newval.tri == mod &&
-		    (sym_get_type(sym) == S_BOOLEAN || sym->implied.tri == yes))
+		if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
 			newval.tri = yes;
 		break;
 	case S_STRING:
@@ -484,8 +485,6 @@ bool sym_tristate_within_range(struct symbol *sym, tristate val)
 		return false;
 	if (sym->visible <= sym->rev_dep.tri)
 		return false;
-	if (sym->implied.tri == yes && val == mod)
-		return false;
 	if (sym_is_choice_value(sym) && sym->visible == yes)
 		return val == yes;
 	return val >= sym->rev_dep.tri && val <= sym->visible;
@@ -1273,28 +1272,6 @@ struct symbol *sym_check_deps(struct symbol *sym)
 	return sym2;
 }
 
-struct property *prop_alloc(enum prop_type type, struct symbol *sym)
-{
-	struct property *prop;
-	struct property **propp;
-
-	prop = xmalloc(sizeof(*prop));
-	memset(prop, 0, sizeof(*prop));
-	prop->type = type;
-	prop->sym = sym;
-	prop->file = current_file;
-	prop->lineno = zconf_lineno();
-
-	/* append property to the prop list of symbol */
-	if (sym) {
-		for (propp = &sym->prop; *propp; propp = &(*propp)->next)
-			;
-		*propp = prop;
-	}
-
-	return prop;
-}
-
 struct symbol *prop_get_symbol(struct property *prop)
 {
 	if (prop->expr && (prop->expr->type == E_SYMBOL ||
diff --git a/scripts/mkmakefile b/scripts/mkmakefile
index 84af27bf0f..1cb1747514 100755
--- a/scripts/mkmakefile
+++ b/scripts/mkmakefile
@@ -1,52 +1,17 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
 # Generates a small Makefile used in the root of the output
 # directory, to allow make to be started from there.
 # The Makefile also allow for more convinient build of external modules
 
 # Usage
 # $1 - Kernel src directory
-# $2 - Output directory
-# $3 - version
-# $4 - patchlevel
 
-
-test ! -r $2/Makefile -o -O $2/Makefile || exit 0
-# Only overwrite automatically generated Makefiles
-# (so we do not overwrite kernel Makefile)
-if test -e $2/Makefile && ! grep -q Automatically $2/Makefile
-then
-	exit 0
-fi
 if [ "${quiet}" != "silent_" ]; then
-	echo "  GEN     $2/Makefile"
+	echo "  GEN     Makefile"
 fi
 
-cat << EOF > $2/Makefile
+cat << EOF > Makefile
 # Automatically generated by $0: don't edit
-
-VERSION = $3
-PATCHLEVEL = $4
-
-lastword = \$(word \$(words \$(1)),\$(1))
-makedir := \$(dir \$(call lastword,\$(MAKEFILE_LIST)))
-
-ifeq ("\$(origin V)", "command line")
-VERBOSE := \$(V)
-endif
-ifneq (\$(VERBOSE),1)
-Q := @
-endif
-
-MAKEARGS := -C $1
-MAKEARGS += O=\$(if \$(patsubst /%,,\$(makedir)),\$(CURDIR)/)\$(patsubst %/,%,\$(makedir))
-
-MAKEFLAGS += --no-print-directory
-
-.PHONY: __sub-make \$(MAKECMDGOALS)
-
-__sub-make:
-	\$(Q)\$(MAKE) \$(MAKEARGS) \$(MAKECMDGOALS)
-
-\$(filter-out __sub-make, \$(MAKECMDGOALS)): __sub-make
-	@:
+include $1/Makefile
 EOF
diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile
index c5aa348924..e02b9f4ce9 100644
--- a/scripts/mod/Makefile
+++ b/scripts/mod/Makefile
@@ -8,7 +8,7 @@ modpost-objs	:= modpost.o sumversion.o
 $(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
 
 quiet_cmd_elfconfig = MKELF   $@
-      cmd_elfconfig = $(obj)/mk_elfconfig $(ARCH) < $< > $@
+      cmd_elfconfig = $(obj)/mk_elfconfig < $< > $@
 
 $(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE
 	$(call if_changed,elfconfig)
diff --git a/scripts/mod/mk_elfconfig.c b/scripts/mod/mk_elfconfig.c
index db3881f14c..680eade89b 100644
--- a/scripts/mod/mk_elfconfig.c
+++ b/scripts/mod/mk_elfconfig.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -9,9 +10,6 @@ main(int argc, char **argv)
 	unsigned char ei[EI_NIDENT];
 	union { short s; char c[2]; } endian_test;
 
-	if (argc != 2) {
-		fprintf(stderr, "Error: no arch\n");
-	}
 	if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
 		fprintf(stderr, "Error: input truncated\n");
 		return 1;
@@ -55,12 +53,5 @@ main(int argc, char **argv)
 	else
 		exit(1);
 
-	if ((strcmp(argv[1], "v850") == 0) || (strcmp(argv[1], "h8300") == 0)
-	    || (strcmp(argv[1], "blackfin") == 0))
-		printf("#define MODULE_SYMBOL_PREFIX \"_\"\n");
-	else
-		printf("#define MODULE_SYMBOL_PREFIX \"\"\n");
-
 	return 0;
 }
-
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 795ee8d09b..a42f1e6ce1 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -31,6 +31,8 @@ static inline int license_is_gpl_compatible(const char *license)
 }
 #endif
 
+#define MODULE_SYMBOL_PREFIX ""
+
 /* Are we using CONFIG_MODVERSIONS? */
 int modversions = 0;
 /* Warn about undefined symbols? (do so if we have vmlinux) */
diff --git a/scripts/tags.sh b/scripts/tags.sh
index 8ae44642a2..4e18ae5282 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -1,70 +1,64 @@
-#!/bin/sh
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
 # Generate tags or cscope files
 # Usage tags.sh <mode>
 #
 # mode may be any of: tags, TAGS, cscope
 #
 # Uses the following environment variables:
-# ARCH, SUBARCH, SRCARCH, srctree, src, obj
+# SUBARCH, SRCARCH, srctree
 
 if [ "$KBUILD_VERBOSE" = "1" ]; then
 	set -x
 fi
 
-# This is a duplicate of RCS_FIND_IGNORE without escaped '()'
-ignore="( -name SCCS -o -name BitKeeper -o -name .svn -o \
-          -name CVS  -o -name .pc       -o -name .hg  -o \
-          -name .git )                                   \
-          -prune -o"
+# RCS_FIND_IGNORE has escaped ()s -- remove them.
+ignore="$(echo "$RCS_FIND_IGNORE" | sed 's|\\||g' )"
+# tags and cscope files should also ignore MODVERSION *.mod.c files
+ignore="$ignore ( -name *.mod.c ) -prune -o"
 
-# Do not use full path if we do not use O=.. builds
-# Use make O=. {tags|cscope}
+# Use make KBUILD_ABS_SRCTREE=1 {tags|cscope}
 # to force full paths for a non-O= build
-if [ "${KBUILD_SRC}" = "" ]; then
+if [ "${srctree}" = "." -o -z "${srctree}" ]; then
 	tree=
 else
 	tree=${srctree}/
 fi
 
-# Find all available archs
-find_all_archs()
-{
-	ALLSOURCE_ARCHS=""
-	for arch in `ls ${tree}arch`; do
-		ALLSOURCE_ARCHS="${ALLSOURCE_ARCHS} "${arch##\/}
-	done
-}
+# ignore userspace tools
+ignore="$ignore ( -path ${tree}tools ) -prune -o"
 
 # Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
 if [ "${ALLSOURCE_ARCHS}" = "" ]; then
 	ALLSOURCE_ARCHS=${SRCARCH}
 elif [ "${ALLSOURCE_ARCHS}" = "all" ]; then
-	find_all_archs
+	ALLSOURCE_ARCHS=$(find ${tree}arch/ -mindepth 1 -maxdepth 1 -type d -printf '%f ')
 fi
 
-# find sources in arch/$ARCH
+# find sources in arch/$1
 find_arch_sources()
 {
 	for i in $archincludedir; do
 		prune="$prune -wholename $i -prune -o"
 	done
-	find ${tree}arch/$1 $ignore $prune -name "$2" -print;
+	find ${tree}arch/$1 $ignore $prune -name "$2" -not -type l -print;
 }
 
 # find sources in arch/$1/include
 find_arch_include_sources()
 {
-	include=$(find ${tree}arch/$1/ -name include -type d);
+	include=$(find ${tree}arch/$1/ -name include -type d -print);
 	if [ -n "$include" ]; then
 		archincludedir="$archincludedir $include"
-		find $include $ignore -name "$2" -print;
+		find $include $ignore -name "$2" -not -type l -print;
 	fi
 }
 
 # find sources in include/
 find_include_sources()
 {
-	find ${tree}include $ignore -name config -prune -o -name "$1" -print;
+	find ${tree}include $ignore -name config -prune -o -name "$1" \
+		-not -type l -print;
 }
 
 # find sources in rest of tree
@@ -72,8 +66,8 @@ find_include_sources()
 find_other_sources()
 {
 	find ${tree}* $ignore \
-	     \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
-	       -name "$1" -print;
+	     \( -path ${tree}include -o -path ${tree}arch -o -name '.tmp_*' \) -prune -o \
+	       -name "$1" -not -type l -print;
 }
 
 find_sources()
@@ -95,8 +89,37 @@ all_sources()
 	find_other_sources '*.[chS]'
 }
 
+all_compiled_sources()
+{
+	for i in $(all_sources); do
+		case "$i" in
+			*.[cS])
+				j=${i/\.[cS]/\.o}
+				j="${j#$tree}"
+				if [ -e $j ]; then
+					echo $i
+				fi
+				;;
+			*)
+				echo $i
+				;;
+		esac
+	done
+}
+
+all_target_sources()
+{
+	if [ -n "$COMPILED_SOURCE" ]; then
+		all_compiled_sources
+	else
+		all_sources
+	fi
+}
+
 all_kconfigs()
 {
+	find ${tree}arch/ -maxdepth 1 $ignore \
+	       -name "Kconfig*" -not -type l -print;
 	for arch in $ALLSOURCE_ARCHS; do
 		find_sources $arch 'Kconfig*'
 	done
@@ -105,93 +128,159 @@ all_kconfigs()
 
 docscope()
 {
-	(echo \-k; echo \-q; all_sources) > cscope.files
+	(echo \-k; echo \-q; all_target_sources) > cscope.files
 	cscope -b -f cscope.out
 }
 
 dogtags()
 {
-	all_sources | gtags -i -f -
+	all_target_sources | gtags -i -f -
+}
+
+# Basic regular expressions with an optional /kind-spec/ for ctags and
+# the following limitations:
+# - No regex modifiers
+# - Use \{0,1\} instead of \?, because etags expects an unescaped ?
+# - \s is not working with etags, use a space or [ \t]
+# - \w works, but does not match underscores in etags
+# - etags regular expressions have to match at the start of a line;
+#   a ^[^#] is prepended by setup_regex unless an anchor is already present
+regex_asm=(
+	'/^\(ENTRY\|_GLOBAL\)(\([[:alnum:]_\\]*\)).*/\2/'
+)
+regex_c=(
+	'/^SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/sys_\1/'
+	'/^BPF_CALL_[0-9](\([[:alnum:]_]*\).*/\1/'
+	'/^COMPAT_SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/compat_sys_\1/'
+	'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1/'
+	'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
+	'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1/'
+	'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
+	'/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/get_\1_slot/'
+	'/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/free_\1_slot/'
+	'/^PAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
+	'/^PAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
+	'/^PAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
+	'/^TESTSETFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
+	'/^TESTPAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
+	'/^SETPAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
+	'/\<__SETPAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
+	'/\<TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/\<__TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/\<CLEARPAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
+	'/\<__CLEARPAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
+	'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/^PAGEFLAG_FALSE(\([[:alnum:]_]*\).*/Page\1/'
+	'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
+	'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/\<SETPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/SetPage\1/'
+	'/\<CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/ClearPage\1/'
+	'/\<__CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/\<TESTCLEARFLAG_FALSE(\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/Page\1/'
+	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/__SetPage\1/'
+	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/^TASK_PFA_TEST([^,]*, *\([[:alnum:]_]*\))/task_\1/'
+	'/^TASK_PFA_SET([^,]*, *\([[:alnum:]_]*\))/task_set_\1/'
+	'/^TASK_PFA_CLEAR([^,]*, *\([[:alnum:]_]*\))/task_clear_\1/'
+	'/^DEF_MMIO_\(IN\|OUT\)_[XD](\([[:alnum:]_]*\),[^)]*)/\2/'
+	'/^DEBUGGER_BOILERPLATE(\([[:alnum:]_]*\))/\1/'
+	'/^DEF_PCI_AC_\(\|NO\)RET(\([[:alnum:]_]*\).*/\2/'
+	'/^PCI_OP_READ(\(\w*\).*[1-4])/pci_bus_read_config_\1/'
+	'/^PCI_OP_WRITE(\(\w*\).*[1-4])/pci_bus_write_config_\1/'
+	'/\<DEFINE_\(RT_MUTEX\|MUTEX\|SEMAPHORE\|SPINLOCK\)(\([[:alnum:]_]*\)/\2/v/'
+	'/\<DEFINE_\(RAW_SPINLOCK\|RWLOCK\|SEQLOCK\)(\([[:alnum:]_]*\)/\2/v/'
+	'/\<DECLARE_\(RWSEM\|COMPLETION\)(\([[:alnum:]_]\+\)/\2/v/'
+	'/\<DECLARE_BITMAP(\([[:alnum:]_]*\)/\1/v/'
+	'/\(^\|\s\)\(\|L\|H\)LIST_HEAD(\([[:alnum:]_]*\)/\3/v/'
+	'/\(^\|\s\)RADIX_TREE(\([[:alnum:]_]*\)/\2/v/'
+	'/\<DEFINE_PER_CPU([^,]*, *\([[:alnum:]_]*\)/\1/v/'
+	'/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*, *\([[:alnum:]_]*\)/\1/v/'
+	'/\<DECLARE_WAIT_QUEUE_HEAD(\([[:alnum:]_]*\)/\1/v/'
+	'/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)(\([[:alnum:]_]*\)/\2/v/'
+	'/\(^\s\)OFFSET(\([[:alnum:]_]*\)/\2/v/'
+	'/\(^\s\)DEFINE(\([[:alnum:]_]*\)/\2/v/'
+	'/\<\(DEFINE\|DECLARE\)_HASHTABLE(\([[:alnum:]_]*\)/\2/v/'
+	'/\<DEFINE_ID\(R\|A\)(\([[:alnum:]_]\+\)/\2/'
+	'/\<DEFINE_WD_CLASS(\([[:alnum:]_]\+\)/\1/'
+	'/\<ATOMIC_NOTIFIER_HEAD(\([[:alnum:]_]\+\)/\1/'
+	'/\<RAW_NOTIFIER_HEAD(\([[:alnum:]_]\+\)/\1/'
+	'/\<DECLARE_FAULT_ATTR(\([[:alnum:]_]\+\)/\1/'
+	'/\<BLOCKING_NOTIFIER_HEAD(\([[:alnum:]_]\+\)/\1/'
+	'/\<DEVICE_ATTR_\(RW\|RO\|WO\)(\([[:alnum:]_]\+\)/dev_attr_\2/'
+	'/\<DRIVER_ATTR_\(RW\|RO\|WO\)(\([[:alnum:]_]\+\)/driver_attr_\2/'
+	'/\<\(DEFINE\|DECLARE\)_STATIC_KEY_\(TRUE\|FALSE\)\(\|_RO\)(\([[:alnum:]_]\+\)/\4/'
+)
+regex_kconfig=(
+	'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/\2/'
+	'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/CONFIG_\2/'
+)
+setup_regex()
+{
+	local mode=$1 lang tmp=() r
+	shift
+
+	regex=()
+	for lang; do
+		case "$lang" in
+		asm)       tmp=("${regex_asm[@]}") ;;
+		c)         tmp=("${regex_c[@]}") ;;
+		kconfig)   tmp=("${regex_kconfig[@]}") ;;
+		esac
+		for r in "${tmp[@]}"; do
+			if test "$mode" = "exuberant"; then
+				regex[${#regex[@]}]="--regex-$lang=${r}b"
+			else
+				# Remove ctags /kind-spec/
+				case "$r" in
+				/*/*/?/)
+					r=${r%?/}
+				esac
+				# Prepend ^[^#] unless already anchored
+				case "$r" in
+				/^*) ;;
+				*)
+					r="/^[^#]*${r#/}"
+				esac
+				regex[${#regex[@]}]="--regex=$r"
+			fi
+		done
+	done
 }
 
 exuberant()
 {
-	all_sources | xargs $1 -a                               \
-	-I __initdata,__exitdata,__acquires,__releases          \
-	-I __read_mostly,____cacheline_aligned                  \
+	setup_regex exuberant asm c
+	all_target_sources | xargs $1 -a                        \
+	-I __initdata,__exitdata,__initconst,__ro_after_init	\
+	-I __initdata_memblock					\
+	-I __refdata,__attribute,__maybe_unused,__always_unused \
+	-I __acquires,__releases,__deprecated,__always_inline	\
+	-I __read_mostly,__aligned,____cacheline_aligned        \
 	-I ____cacheline_aligned_in_smp                         \
+	-I __cacheline_aligned,__cacheline_aligned_in_smp	\
 	-I ____cacheline_internodealigned_in_smp                \
-	-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL                      \
+	-I __used,__packed,__packed2__,__must_check,__must_hold	\
+	-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL,ACPI_EXPORT_SYMBOL   \
 	-I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
-	--extra=+f --c-kinds=+px                                \
-	--regex-asm='/^(ENTRY|_GLOBAL)\(([^)]*)\).*/\2/'        \
-	--regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/' \
-	--regex-c++='/^TRACE_EVENT\(([^,)]*).*/trace_\1/'		\
-	--regex-c++='/^DEFINE_EVENT\([^,)]*, *([^,)]*).*/trace_\1/'	\
-	--regex-c++='/PAGEFLAG\(([^,)]*).*/Page\1/'			\
-	--regex-c++='/PAGEFLAG\(([^,)]*).*/SetPage\1/'			\
-	--regex-c++='/PAGEFLAG\(([^,)]*).*/ClearPage\1/'		\
-	--regex-c++='/TESTSETFLAG\(([^,)]*).*/TestSetPage\1/'		\
-	--regex-c++='/TESTPAGEFLAG\(([^,)]*).*/Page\1/'			\
-	--regex-c++='/SETPAGEFLAG\(([^,)]*).*/SetPage\1/'		\
-	--regex-c++='/__SETPAGEFLAG\(([^,)]*).*/__SetPage\1/'		\
-	--regex-c++='/TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
-	--regex-c++='/__TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
-	--regex-c++='/CLEARPAGEFLAG\(([^,)]*).*/ClearPage\1/'		\
-	--regex-c++='/__CLEARPAGEFLAG\(([^,)]*).*/__ClearPage\1/'	\
-	--regex-c++='/__PAGEFLAG\(([^,)]*).*/__SetPage\1/'		\
-	--regex-c++='/__PAGEFLAG\(([^,)]*).*/__ClearPage\1/'		\
-	--regex-c++='/PAGEFLAG_FALSE\(([^,)]*).*/Page\1/'		\
-	--regex-c++='/TESTSCFLAG\(([^,)]*).*/TestSetPage\1/'		\
-	--regex-c++='/TESTSCFLAG\(([^,)]*).*/TestClearPage\1/'		\
-	--regex-c++='/SETPAGEFLAG_NOOP\(([^,)]*).*/SetPage\1/'		\
-	--regex-c++='/CLEARPAGEFLAG_NOOP\(([^,)]*).*/ClearPage\1/'	\
-	--regex-c++='/__CLEARPAGEFLAG_NOOP\(([^,)]*).*/__ClearPage\1/'	\
-	--regex-c++='/TESTCLEARFLAG_FALSE\(([^,)]*).*/TestClearPage\1/' \
-	--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'		\
-	--regex-c='/PCI_OP_READ\(([a-z]*[a-z]).*[1-4]\)/pci_bus_read_config_\1/' \
-	--regex-c='/PCI_OP_WRITE\(([a-z]*[a-z]).*[1-4]\)/pci_bus_write_config_\1/'
+	-I static,const						\
+	--extra=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
+	"${regex[@]}"
 
+	setup_regex exuberant kconfig
 	all_kconfigs | xargs $1 -a                              \
-	--langdef=kconfig --language-force=kconfig              \
-	--regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/\2/' \
-	--regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/CONFIG_\2/'
+	--langdef=kconfig --language-force=kconfig "${regex[@]}"
+
 }
 
 emacs()
 {
-	all_sources | xargs $1 -a                               \
-	--regex='/^(ENTRY|_GLOBAL)(\([^)]*\)).*/\2/'            \
-	--regex='/^SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/sys_\1/'   \
-	--regex='/^TRACE_EVENT(\([^,)]*\).*/trace_\1/'		\
-	--regex='/^DEFINE_EVENT([^,)]*, *\([^,)]*\).*/trace_\1/' \
-	--regex='/PAGEFLAG\(([^,)]*).*/Page\1/'			\
-	--regex='/PAGEFLAG\(([^,)]*).*/SetPage\1/'		\
-	--regex='/PAGEFLAG\(([^,)]*).*/ClearPage\1/'		\
-	--regex='/TESTSETFLAG\(([^,)]*).*/TestSetPage\1/'	\
-	--regex='/TESTPAGEFLAG\(([^,)]*).*/Page\1/'		\
-	--regex='/SETPAGEFLAG\(([^,)]*).*/SetPage\1/'		\
-	--regex='/__SETPAGEFLAG\(([^,)]*).*/__SetPage\1/'	\
-	--regex='/TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
-	--regex='/__TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
-	--regex='/CLEARPAGEFLAG\(([^,)]*).*/ClearPage\1/'	\
-	--regex='/__CLEARPAGEFLAG\(([^,)]*).*/__ClearPage\1/'	\
-	--regex='/__PAGEFLAG\(([^,)]*).*/__SetPage\1/'		\
-	--regex='/__PAGEFLAG\(([^,)]*).*/__ClearPage\1/'	\
-	--regex='/PAGEFLAG_FALSE\(([^,)]*).*/Page\1/'		\
-	--regex='/TESTSCFLAG\(([^,)]*).*/TestSetPage\1/'	\
-	--regex='/TESTSCFLAG\(([^,)]*).*/TestClearPage\1/'	\
-	--regex='/SETPAGEFLAG_NOOP\(([^,)]*).*/SetPage\1/'	\
-	--regex='/CLEARPAGEFLAG_NOOP\(([^,)]*).*/ClearPage\1/'	\
-	--regex='/__CLEARPAGEFLAG_NOOP\(([^,)]*).*/__ClearPage\1/' \
-	--regex='/TESTCLEARFLAG_FALSE\(([^,)]*).*/TestClearPage\1/' \
-	--regex='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'		\
-	--regex='/PCI_OP_READ\(([a-z]*[a-z]).*[1-4]\)/pci_bus_read_config_\1/' \
-	--regex='/PCI_OP_WRITE\(([a-z]*[a-z]).*[1-4]\)/pci_bus_write_config_\1/'
+	setup_regex emacs asm c
+	all_target_sources | xargs $1 -a "${regex[@]}"
 
-	all_kconfigs | xargs $1 -a                              \
-	--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/' \
-	--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/CONFIG_\3/'
+	setup_regex emacs kconfig
+	all_kconfigs | xargs $1 -a "${regex[@]}"
 }
 
 xtags()
@@ -201,11 +290,10 @@ xtags()
 	elif $1 --version 2>&1 | grep -iq emacs; then
 		emacs $1
 	else
-		all_sources | xargs $1 -a
-        fi
+		all_target_sources | xargs $1 -a
+	fi
 }
 
-
 # Support um (which uses SUBARCH)
 if [ "${ARCH}" = "um" ]; then
 	if [ "$SUBARCH" = "i386" ]; then