command: add new flag '--live' to build live boot image

The live boot image is intended to boot and run on system memory.
Its root file system is built as SQUASFS file system and loaded
from a file system on booting.

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Change-Id: I7df3cb7c43a53120afa300142032aa0e95a914fe

odroid-stamper

@@ -3,10 +3,11 @@
 #set -x
 
 usage() {
-	echo "Usage: $(basename $0) [--help] [--output=<path>]"
+	echo "Usage: $(basename $0) [--help] [--output=<path>] [--live]"
 	echo
 	echo "    --help: this help message"
 	echo "    --output=<path>: output directory for image files."
+	echo "    --live: enforce to build live boot system image."
 	exit 1
 }
 
@@ -31,6 +32,9 @@ for opt in "$@"; do
 		--output=*)
 			out_dir="${opt#*=}"
 			;;
+
+		--no-live)	opt_livesystem=false;;
+		--live)		opt_livesystem=true;;
 	esac
 done
 
@@ -49,6 +53,8 @@ fi
 
 . ${DEFAULT_CONFIG}
 
+[ "x${opt_livesystem}" = "xtrue" ] && LIVESYSTEM=true
+
 [ "${RUN_MENU}" = "true" ] && do_menu
 [ "x${ISOIMAGE}" = "xtrue" ] && LIVESYSTEM=true