defaultenv/update: add check crc32 options

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common/Kconfig

@@ -394,6 +394,8 @@ config DEFAULT_ENVIRONMENT_GENERIC
 	depends on DEFAULT_ENVIRONMENT
 	select SHELL_HUSH
 	select HUSH_GETOPT
+	select CMD_CRC
+	select CMD_CRC_CMP
 	prompt "Default environment generic"
 	help
 	  With this option barebox will use the generic default

defaultenv/bin/_update_help

@@ -1,8 +1,10 @@
 #!/bin/sh
 
-echo "usage: $0 -t <kernel|rootfs> -d <nor|nand> [-f imagename]"
+echo "usage: $0 -t <kernel|rootfs> -d <nor|nand> [-f imagename] -c"
 echo "update tools."
-echo""
+echo ""
+echo "options"
+echo " -c     to check the crc32 for the image and flashed one"
+echo ""
 echo "type update -t kernel -d <nor|nand> [-f imagename] to update kernel into flash"
 echo "type update -t rootfs -d <nor|nand> [-f imagename] to update rootfs into flash"
-

defaultenv/bin/update

@@ -4,8 +4,9 @@
 
 type=""
 device_type=""
+check=n
 
-while getopt "ht:d:f:" Option
+while getopt "ht:d:f:c" Option
 do
 if [ ${Option} = t ]; then
 	type=${OPTARG}
@@ -13,6 +14,8 @@ elif [ ${Option} = d ]; then
 	device_type=${OPTARG}
 elif [ ${Option} = f ]; then
 	imagename=${OPTARG}
+elif [ ${Option} = c ]; then
+	check=y
 else
 	. /env/bin/_update_help
 	exit 0
@@ -43,3 +46,6 @@ else
 fi
 
 . /env/bin/_update
+if [ x${check} = xy ]; then
+	crc32 -f $image -F $part
+fi