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-rw-r--r--scripts/kconfig/Makefile226
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diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
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+++ b/scripts/kconfig/Makefile
@@ -0,0 +1,226 @@
+# SPDX-License-Identifier: GPL-2.0
+# ===========================================================================
+# Kernel configuration targets
+# These targets are used from top-level makefile
+
+ifdef KBUILD_KCONFIG
+Kconfig := $(KBUILD_KCONFIG)
+else
+Kconfig := Kconfig
+endif
+
+ifndef KBUILD_DEFCONFIG
+KBUILD_DEFCONFIG := defconfig
+endif
+
+ifeq ($(quiet),silent_)
+silent := -s
+endif
+
+export KCONFIG_DEFCONFIG_LIST :=
+ifndef cross_compiling
+kernel-release := $(shell uname -r)
+KCONFIG_DEFCONFIG_LIST += \
+ /lib/modules/$(kernel-release)/.config \
+ /etc/kernel-config \
+ /boot/config-$(kernel-release)
+endif
+KCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)
+
+# We need this, in case the user has it in its environment
+unexport CONFIG_
+
+config-prog := conf
+menuconfig-prog := mconf
+nconfig-prog := nconf
+gconfig-prog := gconf
+xconfig-prog := qconf
+
+define config_rule
+PHONY += $(1)
+$(1): $(obj)/$($(1)-prog)
+ $(Q)$$< $(silent) $(Kconfig)
+
+PHONY += build_$(1)
+build_$(1): $(obj)/$($(1)-prog)
+endef
+
+$(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c))))
+
+PHONY += localmodconfig localyesconfig
+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); \
+ fi
+ $(Q)rm -f .tmp.config
+
+# These targets map 1:1 to the commandline options of 'conf'
+#
+# Note:
+# syncconfig has become an internal implementation detail and is now
+# deprecated for external use
+simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
+ alldefconfig randconfig listnewconfig olddefconfig syncconfig \
+ helpnewconfig yes2modconfig mod2yesconfig mod2noconfig
+
+PHONY += $(simple-targets)
+
+$(simple-targets): $(obj)/conf
+ $(Q)$< $(silent) --$@ $(Kconfig)
+
+PHONY += savedefconfig defconfig
+
+savedefconfig: $(obj)/conf
+ $(Q)$< $(silent) --$@=defconfig $(Kconfig)
+
+defconfig: $(obj)/conf
+ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
+ @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
+ $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
+else
+ @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
+ $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
+endif
+
+%_defconfig: $(obj)/conf
+ $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
+
+configfiles = $(wildcard $(srctree)/kernel/configs/$(1) $(srctree)/arch/$(SRCARCH)/configs/$(1))
+all-config-fragments = $(call configfiles,*.config)
+config-fragments = $(call configfiles,$@)
+
+%.config: $(obj)/conf
+ $(if $(config-fragments),, $(error $@ fragment does not exists on this architecture))
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(config-fragments)
+ $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
+
+PHONY += tinyconfig
+tinyconfig:
+ $(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig
+ $(Q)$(MAKE) -f $(srctree)/Makefile tiny.config
+
+# CHECK: -o cache_dir=<path> working?
+PHONY += testconfig
+testconfig: $(obj)/conf
+ $(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
+ -o cache_dir=$(abspath $(obj)/tests/.cache) \
+ $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
+clean-files += tests/.cache
+
+# Help text used by make help
+help:
+ @echo 'Configuration targets:'
+ @echo ' config - Update current config utilising a line-oriented program'
+ @echo ' nconfig - Update current config utilising a ncurses menu based program'
+ @echo ' menuconfig - Update current config utilising a menu based program'
+ @echo ' xconfig - Update current config utilising a Qt based front-end'
+ @echo ' gconfig - Update current config utilising a GTK+ based front-end'
+ @echo ' oldconfig - Update current config utilising a provided .config as base'
+ @echo ' localmodconfig - Update current config disabling modules not loaded'
+ @echo ' except those preserved by LMC_KEEP environment variable'
+ @echo ' localyesconfig - Update current config converting local mods to core'
+ @echo ' except those preserved by LMC_KEEP environment variable'
+ @echo ' defconfig - New config with default from ARCH supplied defconfig'
+ @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
+ @echo ' allnoconfig - New config where all options are answered with no'
+ @echo ' allyesconfig - New config where all options are accepted with yes'
+ @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 ' mod2noconfig - Change answers from mod to no 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'
+ @echo ' default value without prompting'
+ @echo ' tinyconfig - Configure the tiniest possible kernel'
+ @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
+ @echo ''
+ @echo 'Configuration topic targets:'
+ @$(foreach f, $(all-config-fragments), \
+ if help=$$(grep -m1 '^# Help: ' $(f)); then \
+ printf ' %-25s - %s\n' '$(notdir $(f))' "$${help#*: }"; \
+ fi;)
+
+# ===========================================================================
+# object files used by all kconfig flavours
+common-objs := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \
+ preprocess.o symbol.o util.o
+
+$(obj)/lexer.lex.o: $(obj)/parser.tab.h
+HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src)
+HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
+
+# conf: Used for defconfig, oldconfig and related targets
+hostprogs += conf
+conf-objs := conf.o $(common-objs)
+
+# nconf: Used for the nconfig target based on ncurses
+hostprogs += nconf
+nconf-objs := nconf.o nconf.gui.o $(common-objs)
+
+HOSTLDLIBS_nconf = $(call read-file, $(obj)/nconf-libs)
+HOSTCFLAGS_nconf.o = $(call read-file, $(obj)/nconf-cflags)
+HOSTCFLAGS_nconf.gui.o = $(call read-file, $(obj)/nconf-cflags)
+
+$(obj)/nconf: | $(obj)/nconf-libs
+$(obj)/nconf.o $(obj)/nconf.gui.o: | $(obj)/nconf-cflags
+
+# mconf: Used for the menuconfig target based on lxdialog
+hostprogs += mconf
+lxdialog := $(addprefix lxdialog/, \
+ checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
+mconf-objs := mconf.o $(lxdialog) $(common-objs)
+
+HOSTLDLIBS_mconf = $(call read-file, $(obj)/mconf-libs)
+$(foreach f, mconf.o $(lxdialog), \
+ $(eval HOSTCFLAGS_$f = $$(call read-file, $(obj)/mconf-cflags)))
+
+$(obj)/mconf: | $(obj)/mconf-libs
+$(addprefix $(obj)/, mconf.o $(lxdialog)): | $(obj)/mconf-cflags
+
+# qconf: Used for the xconfig target based on Qt
+hostprogs += qconf
+qconf-cxxobjs := qconf.o qconf-moc.o
+qconf-objs := images.o $(common-objs)
+
+HOSTLDLIBS_qconf = $(call read-file, $(obj)/qconf-libs)
+HOSTCXXFLAGS_qconf.o = -std=c++11 -fPIC $(call read-file, $(obj)/qconf-cflags)
+HOSTCXXFLAGS_qconf-moc.o = -std=c++11 -fPIC $(call read-file, $(obj)/qconf-cflags)
+$(obj)/qconf: | $(obj)/qconf-libs
+$(obj)/qconf.o $(obj)/qconf-moc.o: | $(obj)/qconf-cflags
+
+quiet_cmd_moc = MOC $@
+ cmd_moc = $(call read-file, $(obj)/qconf-bin)/moc $< -o $@
+
+$(obj)/qconf-moc.cc: $(src)/qconf.h FORCE | $(obj)/qconf-bin
+ $(call if_changed,moc)
+
+targets += qconf-moc.cc
+
+# gconf: Used for the gconfig target based on GTK+
+hostprogs += gconf
+gconf-objs := gconf.o images.o $(common-objs)
+
+HOSTLDLIBS_gconf = $(call read-file, $(obj)/gconf-libs)
+HOSTCFLAGS_gconf.o = $(call read-file, $(obj)/gconf-cflags)
+
+$(obj)/gconf: | $(obj)/gconf-libs
+$(obj)/gconf.o: | $(obj)/gconf-cflags
+
+# check if necessary packages are available, and configure build flags
+cmd_conf_cfg = $< $(addprefix $(obj)/$*conf-, cflags libs bin); touch $(obj)/$*conf-bin
+
+$(obj)/%conf-cflags $(obj)/%conf-libs $(obj)/%conf-bin: $(src)/%conf-cfg.sh
+ $(call cmd,conf_cfg)
+
+clean-files += *conf-cflags *conf-libs *conf-bin