1.1 --- a/kconfig/kconfig.mk	Sat Jul 14 18:25:47 2012 +0200
     1.2 +++ b/kconfig/kconfig.mk	Fri Sep 21 16:26:10 2012 +0200
     1.3 @@ -5,7 +5,7 @@
     1.4  #-----------------------------------------------------------
     1.5  # The configurators rules
     1.6  
     1.7 -configurators = menuconfig nconfig oldconfig
     1.8 +configurators = menuconfig nconfig oldconfig defconfig olddefconfig
     1.9  PHONY += $(configurators)
    1.10  
    1.11  $(configurators): config_files
    1.12 @@ -27,6 +27,14 @@
    1.13  	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
    1.14  	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)
    1.15  
    1.16 +defconfig: .config
    1.17 +	@$(ECHO) '  GEN   $@'
    1.18 +	$(SILENT)$(CONF) --savedefconfig=$${CONFIG-defconfig} $(KCONFIG_TOP)
    1.19 +
    1.20 +olddefconfig:
    1.21 +	@$(ECHO) '  CONF  $@'
    1.22 +	$(SILENT)$(CONF) --defconfig=$${CONFIG-defconfig} $(KCONFIG_TOP)
    1.23 +
    1.24  # Always be silent, the stdout an be >.config
    1.25  extractconfig:
    1.26  	@$(awk) 'BEGIN { dump=0; }                                                  \
    1.27 @@ -50,3 +58,6 @@
    1.28  	@echo  '  oldconfig          - Update current config using a provided .config as base'
    1.29  	@echo  '  extractconfig      - Extract to stdout the configuration items from a'
    1.30  	@echo  '                       build.log file piped to stdin'
    1.31 +	@echo  '  defconfig          - Save current config as a mini-defconfig to $${CONFIG}'
    1.32 +	@echo  '  olddefconfig       - Update config from a mini-defconfig $${CONFIG}'
    1.33 +	@echo  '                       (default: $${CONFIG}=./defconfig)'