linux: introduced optional SDECFG_PKG_LINUX_EARLY_FILE to set CONFIG_INITRAMFS_SOURCE

base/linux/config-700.in

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../linux/config-700.in
-# Copyright (C) 2006 - 2010 The OpenSDE Project
+# Copyright (C) 2006 - 2012 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -25,6 +25,7 @@ menu_begin MENU_PKG_LINUX 'Linux Kernel Options'
 
 	comment ' '
 	text 'Custom settings file' SDECFG_PKG_LINUX_CONFIG_FILE "config/$config/linux.cfg"
+	text 'Embedded initramfs file' SDECFG_PKG_LINUX_EARLY_FILE ""
 
 	if pkgcheck uml_utilities X ; then
 		comment ' '

base/linux/linux-conf.in

@@ -106,6 +106,15 @@ auto_config() {
 		echo > .config.$arch
 	fi
 
+	# inject CONFIG_INITRAMFS_SOURCE if set
+	if [ -n "$SDECFG_PKG_LINUX_EARLY_FILE" ]; then
+		x="$SDECFG_PKG_LINUX_EARLY_FILE"
+		expr "$x" : '/*' > /dev/null || x="$base/$x"
+
+		sed -i '/CONFIG_INITRAMFS_SOURCE/d;' .config.$arch
+		echo "CONFIG_INITRAMFS_SOURCE=\"$x\"" >> .config.$arch
+	fi
+
 	if [ -s .config.$arch ]; then
 		# apply $arch specific rules
 		#