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upd upgrade system

#!/bin/sh
#
# U-boot cfg nand map load/save management script
#
# $Id: rc.cfg,v 1.1.2.12 2014/02/04 14:21:51 misho Exp $

CFG_NAND_LIST="/etc/cfg.map"
CFG_NAND_MAP="/dev/map/cfg"
CFG_NAND_SIZE=65536

FRM_NAND_MAP="/dev/map/firmware"
FRM_NAND_CNT=121

UPGRADE_IMAGE=""

cd ${2:-/etc}

case "$1" in
	load)
		dd if=${CFG_NAND_MAP} bs=${CFG_NAND_SIZE} 2>&- | \
		      gunzip 2>&- | cpio -iud 2>&- || exit 1
		;;
	save)
		if [ ! -r ${CFG_NAND_LIST} ];then
			echo "# Auto generated manifest file" >${CFG_NAND_LIST}
			find . >>${CFG_NAND_LIST}
			if [ $? -ne 0 -o ! -r ${CFG_NAND_LIST} ]; then
				echo "Manifest cfg nand map - file '${CFG_NAND_LIST}' not found!"
				exit 1
			fi
		fi

		sed -nE -e 's/^ *([^ #]+) */\1/p' < ${CFG_NAND_LIST} | xargs find | \
			cpio -o | gzip -9 | \
			dd of=${CFG_NAND_MAP} bs=${CFG_NAND_SIZE} count=1 conv=sync \
				2>&- || exit 1
		;;
	erase)
		dd if=/dev/zero of=${CFG_NAND_MAP} bs=${CFG_NAND_SIZE} count=1 \
			conv=sync 2>&- || exit 1
                echo "Config NAND was erased!"
		;;
	upgrade)
		ELWIX_UPGRADE_HOST=`cat /etc/myelwix`
		ping -c1 $(echo ${ELWIX_UPGRADE_HOST} | cut -f3 -d '/' | cut -f2 -d '@') >/dev/null 2>&1
		if [ $? -ne 0 ]; then
			echo "ELWIX upgrade from host ${ELWIX_UPGRADE_HOST} failed!!!"
			exit 1
		else
			ELWIX_UPGRADE_HOST="${ELWIX_UPGRADE_HOST}/elwix/elwix_firmware.bin"
		fi

		echo "ELIWX starting upgrade from ${ELWIX_UPGRADE_HOST}"
		fetch -q -o- --user-agent=ELWIX_Upgrade --allow-sslv2 \
			--no-verify-peer --no-verify-hostname ${ELWIX_UPGRADE_HOST} | \
			dd of=${FRM_NAND_MAP} bs=${CFG_NAND_SIZE} \
			count=${FRM_NAND_CNT} conv=sync 2>&- || exit 1
		echo "ELWIX upgrade complete. Now rebooting system ..."
		sleep 3
		reboot
		;;
	*)
		echo "Missing parameter - available options are (load | save | erase | upgrade)"
		;;
esac

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