scripts: fit-msg.sh: read components image message

Support get commit version of components image.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: Ic279ed457949a98693571ec2a8ff2cfac4e0469d

scripts/fit-msg.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# Copyright (c) 2020 Rockchip Electronics Co., Ltd
+#
+# SPDX-License-Identifier: GPL-2.0
+#
+set -e
+
+function usage()
+{
+	echo
+	echo "usage:"
+	echo "    $0 -f [uboot.img]"
+	echo
+}
+
+function args_process()
+{
+	if [ $# -ne 2 ]; then
+		usage
+		exit 1
+	fi
+
+	while [ $# -gt 0 ]; do
+		case $1 in
+			-f)
+				IMG=$2
+				shift 2
+				;;
+			*)
+				usage
+				exit 1
+				;;
+		esac
+	done
+
+	if [ ! -f ${IMG} ]; then
+		echo "ERROR: No ${IMG}"
+		exit 1
+	fi
+}
+
+function image_msg()
+{
+	echo "[Commit version]:"
+	strings ${IMG} | grep '\-g[0-9,a-f][0-9,a-f][0-9,a-f][0-9,a-f][0-9,a-f][0-9,a-f][0-9,a-f]' | sort --uniq
+	strings ${IMG} | grep 'Built :' | sort --uniq
+}
+
+args_process $*
+image_msg