buildscript: add support for config targets

With this changes it's possible to open the menuconfig and kernel_menuconfig
target and save the corresponding config files to the local bsp.

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>

bsp/board_dir300.bsp

@@ -10,10 +10,6 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-    cp ./bsp/$machine/kernel_config-3.3 $target/target/linux/atheros/config-3.3
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
-
     # Remove fastd and configurator start on WAN event
     /bin/rm $target/files/etc/hotplug.d/iface/50-fastdstart
     /bin/rm $target/files/etc/hotplug.d/iface/51-configurator

bsp/board_fonera.bsp

@@ -10,10 +10,6 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-    cp ./bsp/$machine/kernel_config-3.3 $target/target/linux/atheros/config-3.3
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
-
     # Remove fastd and configurator start on WAN event
     /bin/rm $target/files/etc/hotplug.d/iface/50-fastdstart
     /bin/rm $target/files/etc/hotplug.d/iface/51-configurator

bsp/board_wr1043nd.bsp

@@ -7,8 +7,7 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
+	echo "nothing todo" > /dev/null
 }
 
 board_postbuild() {

bsp/board_wr741nd2.bsp

@@ -7,8 +7,7 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
+	echo "nothing todo" > /dev/null
 }
 
 board_postbuild() {

bsp/board_wr741nd4.bsp

@@ -7,8 +7,7 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
+	echo "nothing todo" > /dev/null
 }
 
 board_postbuild() {

bsp/board_wr841n8.bsp

@@ -8,8 +8,7 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
+	echo "nothing todo" > /dev/null
 }
 
 board_postbuild() {

bsp/board_wr841nd7.bsp

@@ -7,8 +7,7 @@ board_prepare() {
 }
 
 board_prebuild() {
-	cp ./bsp/$machine/.config $target/.config
-	cp -r ./bsp/$machine/root_file_system/* $target/files/
+    echo "nothing todo" > /dev/null
 }
 
 board_postbuild() {

buildscript

@@ -116,6 +116,14 @@ prebuild() {
 	mkdir $target/files
 
 	cp -r ./bsp/default/root_file_system/* $target/files/
+	cp -r ./bsp/$machine/root_file_system/* $target/files/
+	cp ./bsp/$machine/.config $target/.config
+
+	arch=$(awk -F= '/^CONFIG_TARGET_BOARD/{print gsub(/"/,"",$2); print $2;}' ./bsp/$machine/.config)
+	version=$(awk '/^CONFIG_LINUX/ { sub(/CONFIG_LINUX_/,""); sub(/=y/,""); gsub(/_/,"."); print; }' ./bsp/$machine/.config)
+	test -f ./bsp/$machine/.kernelconfig-$version && \
+		cp ./bsp/$machine/.kernelconfig-$version \
+		$target/target/linux/$arch/config-$version
 
 	board_prebuild
 
@@ -165,6 +173,44 @@ build() {
 	postbuild
 }
 
+config() {
+	prebuild
+
+	opath=$(pwd)
+	cd $target
+
+	case "$1" in
+		"openwrt")
+			make menuconfig
+			;;
+		"kernel")
+			make kernel_menuconfig
+			;;
+	esac
+
+	cd $opath
+
+	save=""
+	until [ "$save" = "y" -o "$save" = "n" ]; do
+		echo "Do you want to save the generated config? (y/n)"
+		read save
+	done
+
+	if [ "$save" = "y" ]; then
+		case "$1" in
+			"openwrt")
+				grep '^CON\|^# CON' $target/.config | sort > ./bsp/$machine/.config
+				;;
+			"kernel")
+				arch=$(awk -F= '/^CONFIG_TARGET_BOARD/{gsub(/"/,"",$2); print $2;}' ./bsp/$machine/.config)
+				version=$(awk '/^CONFIG_LINUX/ { sub(/CONFIG_LINUX_/,""); sub(/=y/,""); gsub(/_/,"."); print; }' ./bsp/$machine/.config)
+				grep '^CON\|^# CON' $target/target/linux/$arch/config-$version | sort > ./bsp/$machine/.kernelconfig-$version
+				;;
+		esac
+	fi
+
+}
+
 postbuild() {
 	board_postbuild
 }
@@ -270,6 +316,21 @@ case "$1" in
 			build "$2"
 		fi
 		;;
+	"config")
+		case "$2" in
+			openwrt)
+				config openwrt
+				;;
+			kernel)
+				config kernel
+				;;
+			*)
+				echo "This open the OpenWRT menuconfig dialog"
+				echo
+				echo "Usage: $0 $1 openwrt|kernel"
+				;;
+		esac
+		;;
 	"download")
 		if [ "$2" = "help" ] || [ "$2" = "" ]; then
 			echo "This option downloads the ready configured images from an external location if needet."
@@ -324,6 +385,7 @@ case "$1" in
 		echo "	selectcommunity [communityfile]"
 		echo "	selectbsp [bsp file]"
 		echo "	prepare"
+		echo "	config"
 		echo "	build"
 		echo "	flash"
 		echo "	download"