+__config_name_list = $(1)/config-$(KERNEL_PATCHVER) $(1)/config-default
+__config_list = $(firstword $(wildcard $(call __config_name_list,$(1))))
+find_kernel_config=$(if $(__config_list),$(__config_list),$(lastword $(__config_name_list)))
+
+GENERIC_LINUX_CONFIG = $(call find_kernel_config,$(GENERIC_PLATFORM_DIR))
+LINUX_TARGET_CONFIG = $(call find_kernel_config,$(PLATFORM_DIR))
+ifneq ($(PLATFORM_DIR),$(PLATFORM_SUBDIR))
+ LINUX_SUBTARGET_CONFIG = $(call find_kernel_config,$(PLATFORM_SUBDIR))
+endif
+
+# config file list used for compiling
+LINUX_KCONFIG_LIST = $(wildcard $(GENERIC_LINUX_CONFIG) $(LINUX_TARGET_CONFIG) $(LINUX_SUBTARGET_CONFIG) $(TOPDIR)/env/kernel-config)
+
+# default config list for reconfiguring
+# defaults to subtarget if subtarget exists and target does not
+# defaults to target otherwise
+USE_SUBTARGET_CONFIG = $(if $(wildcard $(LINUX_TARGET_CONFIG)),,$(if $(LINUX_SUBTARGET_CONFIG),1))
+
+LINUX_RECONFIG_LIST = $(wildcard $(GENERIC_LINUX_CONFIG) $(LINUX_TARGET_CONFIG) $(if $(USE_SUBTARGET_CONFIG),$(LINUX_SUBTARGET_CONFIG)))
+LINUX_RECONFIG_TARGET = $(if $(USE_SUBTARGET_CONFIG),$(LINUX_SUBTARGET_CONFIG),$(LINUX_TARGET_CONFIG))
+
+# select the config file to be cahnged by kernel_menuconfig/kernel_oldconfig
+ifeq ($(CONFIG_TARGET),platform)
+ LINUX_RECONFIG_LIST = $(wildcard $(GENERIC_LINUX_CONFIG) $(LINUX_TARGET_CONFIG))
+ LINUX_RECONFIG_TARGET = $(LINUX_TARGET_CONFIG)
+endif
+ifeq ($(CONFIG_TARGET),subtarget)
+ LINUX_RECONFIG_LIST = $(wildcard $(GENERIC_LINUX_CONFIG) $(LINUX_TARGET_CONFIG) $(LINUX_SUBTARGET_CONFIG))
+ LINUX_RECONFIG_TARGET = $(LINUX_SUBTARGET_CONFIG)
+endif
+ifeq ($(CONFIG_TARGET),env)
+ LINUX_RECONFIG_LIST = $(LINUX_KCONFIG_LIST)
+ LINUX_RECONFIG_TARGET = $(TOPDIR)/env/kernel-config
+endif
+
+__linux_confcmd = $(SCRIPT_DIR)/kconfig.pl $(2) $(patsubst %,+,$(wordlist 2,9999,$(1))) $(1)
+
+LINUX_CONF_CMD = $(call __linux_confcmd,$(LINUX_KCONFIG_LIST),)
+LINUX_RECONF_CMD = $(call __linux_confcmd,$(LINUX_RECONFIG_LIST),)
+LINUX_RECONF_DIFF = $(call __linux_confcmd,$(filter-out $(LINUX_RECONFIG_TARGET),$(LINUX_RECONFIG_LIST)),'>')
+
+ifeq ($(DUMP),1)
+ BuildTarget=$(BuildTargets/DumpCurrent)
+
+ ifneq ($(BOARD),)
+ TMP_CONFIG:=$(TMP_DIR)/.kconfig-$(call target_conf,$(TARGETID))
+ $(TMP_CONFIG): $(LINUX_KCONFIG_LIST)
+ $(LINUX_CONF_CMD) > $@ || rm -f $@
+ -include $(TMP_CONFIG)
+ .SILENT: $(TMP_CONFIG)
+ .PRECIOUS: $(TMP_CONFIG)
+
+ ifneq ($(CONFIG_GENERIC_GPIO),)
+ FEATURES += gpio
+ endif
+ ifneq ($(CONFIG_PCI),)
+ FEATURES += pci
+ endif
+ ifneq ($(CONFIG_PCIEPORTBUS),)
+ FEATURES += pcie
+ endif
+ ifneq ($(CONFIG_USB)$(CONFIG_USB_SUPPORT),)
+ ifneq ($(CONFIG_USB_ARCH_HAS_HCD)$(CONFIG_USB_EHCI_HCD),)
+ FEATURES += usb
+ endif
+ endif
+ ifneq ($(CONFIG_PCMCIA)$(CONFIG_PCCARD),)
+ FEATURES += pcmcia
+ endif
+ ifneq ($(CONFIG_VGA_CONSOLE)$(CONFIG_FB),)
+ FEATURES += display
+ endif
+
+ # remove duplicates
+ FEATURES:=$(sort $(FEATURES))
+ endif
+ DEFAULT_CFLAGS_i386=-O2 -pipe -march=i486 -fno-caller-saves
+ DEFAULT_CFLAGS_x86_64=-O2 -pipe -march=athlon64 -fno-caller-saves
+ DEFAULT_CFLAGS_m68k=-Os -pipe -mcfv4e -fno-caller-saves
+ DEFAULT_CFLAGS_mips=-Os -pipe -mips32 -mtune=mips32 -fno-caller-saves
+ DEFAULT_CFLAGS_mipsel=$(DEFAULT_CFLAGS_mips)
+ DEFAULT_CFLAGS_mips64=-Os -pipe -mips64 -mtune=mips64 -mabi=64 -fno-caller-saves
+ DEFAULT_CFLAGS_mips64el=$(DEFAULT_CFLAGS_mips64)
+ DEFAULT_CFLAGS_sparc=-Os -pipe -mcpu=ultrasparc -fno-caller-saves
+ DEFAULT_CFLAGS_arm=-Os -pipe -march=armv5te -mtune=xscale -fno-caller-saves
+ DEFAULT_CFLAGS_armeb=$(DEFAULT_CFLAGS_arm)
+ DEFAULT_CFLAGS=$(if $(DEFAULT_CFLAGS_$(ARCH)),$(DEFAULT_CFLAGS_$(ARCH)),-Os -pipe -fno-caller-saves)
+endif
+
+define BuildTargets/DumpCurrent
+ .PHONY: dumpinfo
+ dumpinfo:
+ @echo 'Target: $(TARGETID)'; \
+ echo 'Target-Board: $(BOARD)'; \
+ echo 'Target-Name: $(BOARDNAME)$(if $(SUBTARGETS),$(if $(SUBTARGET),))'; \
+ echo 'Target-Path: $(subst $(TOPDIR)/,,$(PWD))'; \
+ echo 'Target-Arch: $(ARCH)'; \
+ echo 'Target-Arch-Packages: $(if $(ARCH_PACKAGES),$(ARCH_PACKAGES),$(BOARD))'; \
+ echo 'Target-Features: $(FEATURES)'; \
+ echo 'Target-Depends: $(DEPENDS)'; \
+ echo 'Target-Optimization: $(if $(CFLAGS),$(CFLAGS),$(DEFAULT_CFLAGS))'; \
+ echo 'Linux-Version: $(LINUX_VERSION)'; \
+ echo 'Linux-Release: $(LINUX_RELEASE)'; \
+ echo 'Linux-Kernel-Arch: $(LINUX_KARCH)'; \
+ echo 'Target-Description:'; \
+ $(SH_FUNC) getvar $(call shvar,Target/Description); \
+ echo '@@'; \
+ echo 'Default-Packages: $(DEFAULT_PACKAGES)'; \
+ $(DUMPINFO)
+ $(if $(SUBTARGET),,@$(foreach SUBTARGET,$(SUBTARGETS),$(SUBMAKE) -s DUMP=1 SUBTARGET=$(SUBTARGET); ))
+endef
+
+include $(INCLUDE_DIR)/kernel.mk
+ifeq ($(TARGET_BUILD),1)
+ include $(INCLUDE_DIR)/kernel-build.mk
+ BuildTarget?=$(BuildKernel)
+endif