diff --git a/meta/recipes-core/initrdscripts/initramfs-framework/init b/meta/recipes-core/initrdscripts/initramfs-framework/init
index 67590ad765..62d8ccfd0c 100755
--- a/meta/recipes-core/initrdscripts/initramfs-framework/init
+++ b/meta/recipes-core/initrdscripts/initramfs-framework/init
@@ -104,13 +104,14 @@ for p in `cat /proc/cmdline`; do
 		continue
 	fi
 
-	opt=`echo $p | cut -d'=' -f1`
-	opt=`echo $opt | sed -e 'y/.-/__/'`
-	if [ "`echo $p | cut -d'=' -f1`" = "$p" ]; then
+	key=${p%%=*}
+	opt=${key//./_}
+	opt=${opt//-/_}
+	if [ "$key" = "$p" ]; then
 		# opt parameter
 		eval "bootparam_${opt}=true"
 	else
-		value="`echo $p | cut -d'=' -f2-`"	# Option value
+		value=${p#*=}	# Option value
 		value_lstripped=${value#\"}
 		value_rstripped=${value%\"}