diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
new file mode 100644
index 0000000..f43281b
--- /dev/null
+++ b/package/base-files/files/lib/functions/system.sh
@@ -0,0 +1,317 @@
+# Copyright (C) 2006-2013 OpenWrt.org
+
+. /lib/functions.sh
+. /usr/share/libubox/jshn.sh
+
+get_mac_binary() {
+	local path="$1"
+	local offset="$2"
+
+	if ! [ -e "$path" ]; then
+		echo "get_mac_binary: file $path not found!" >&2
+		return
+	fi
+
+	hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' $path 2>/dev/null
+}
+
+get_mac_label_dt() {
+	local basepath="/proc/device-tree"
+	local macdevice="$(cat "$basepath/aliases/label-mac-device" 2>/dev/null)"
+	local macaddr
+
+	[ -n "$macdevice" ] || return
+
+	macaddr=$(get_mac_binary "$basepath/$macdevice/mac-address" 0 2>/dev/null)
+	[ -n "$macaddr" ] || macaddr=$(get_mac_binary "$basepath/$macdevice/local-mac-address" 0 2>/dev/null)
+
+	echo $macaddr
+}
+
+get_mac_label_json() {
+	local cfg="/etc/board.json"
+	local macaddr
+
+	[ -s "$cfg" ] || return
+
+	json_init
+	json_load "$(cat $cfg)"
+	if json_is_a system object; then
+		json_select system
+			json_get_var macaddr label_macaddr
+		json_select ..
+	fi
+
+	echo $macaddr
+}
+
+get_mac_label() {
+	local macaddr=$(get_mac_label_dt)
+
+	[ -n "$macaddr" ] || macaddr=$(get_mac_label_json)
+
+	echo $macaddr
+}
+
+find_mtd_chardev() {
+	local INDEX=$(find_mtd_index "$1")
+	local PREFIX=/dev/mtd
+
+	[ -d /dev/mtd ] && PREFIX=/dev/mtd/
+	echo "${INDEX:+$PREFIX$INDEX}"
+}
+
+get_mac_ascii() {
+	local part="$1"
+	local key="$2"
+	local mac_dirty
+
+	mac_dirty=$(strings "$part" | tr -d ' \t' | sed -n 's/^'"$key"'=//p' | head -n 1)
+
+	# "canonicalize" mac
+	[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
+}
+
+mtd_get_mac_ascii() {
+	local mtdname="$1"
+	local key="$2"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
+		return
+	fi
+
+	get_mac_ascii "$part" "$key"
+}
+
+mtd_get_mac_encrypted_arcadyan() {
+	local iv="00000000000000000000000000000000"
+	local key="2A4B303D7644395C3B2B7053553C5200"
+	local mac_dirty
+	local mtdname="$1"
+	local part
+	local size
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_encrypted_arcadyan: partition $mtdname not found!" >&2
+		return
+	fi
+
+	# Config decryption and getting mac. Trying uencrypt and openssl utils.
+	size=$((0x$(dd if=$part skip=9 bs=1 count=4 2>/dev/null | hexdump -v -e '1/4 "%08x"')))
+	if [[ -f  "/usr/bin/uencrypt" ]]; then
+		mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \
+			uencrypt -d -n -k $key -i $iv | grep mac | cut -c 5-)
+	elif [[ -f  "/usr/bin/openssl" ]]; then
+		mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \
+			openssl aes-128-cbc -d -nopad -K $key -iv $iv | grep mac | cut -c 5-)
+	else
+		echo "mtd_get_mac_encrypted_arcadyan: Neither uencrypt nor openssl was found!" >&2
+		return
+	fi
+
+	# "canonicalize" mac
+	[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
+}
+
+mtd_get_mac_encrypted_deco() {
+	local mtdname="$1"
+
+	if ! [ -e "$mtdname" ]; then
+		echo "mtd_get_mac_encrypted_deco: file $mtdname not found!" >&2
+		return
+	fi
+
+	tplink_key="3336303032384339"
+
+	key=$(dd if=$mtdname bs=1 skip=16 count=8 2>/dev/null | \
+		uencrypt -n -d -k $tplink_key -c des-ecb | hexdump -v -n 8 -e '1/1 "%02x"')
+
+	macaddr=$(dd if=$mtdname bs=1 skip=32 count=8 2>/dev/null | \
+		uencrypt -n -d -k $key -c des-ecb | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"')
+
+	echo $macaddr
+}
+
+mtd_get_mac_uci_config_ubi() {
+	local volumename="$1"
+
+	. /lib/upgrade/nand.sh
+
+	local ubidev=$(nand_attach_ubi $CI_UBIPART)
+	local part=$(nand_find_volume $ubidev $volumename)
+
+	cat "/dev/$part" | sed -n 's/^\s*option macaddr\s*'"'"'\?\([0-9A-F:]\+\)'"'"'\?/\1/Ip'
+}
+
+mtd_get_mac_text() {
+	local mtdname="$1"
+	local offset=$((${2:-0}))
+	local length="${3:-17}"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_text: partition $mtdname not found!" >&2
+		return
+	fi
+
+	[ $((offset + length)) -le $(mtd_get_part_size "$mtdname") ] || return
+
+	macaddr_canonicalize $(dd bs=1 if="$part" skip="$offset" count="$length" 2>/dev/null)
+}
+
+mtd_get_mac_binary() {
+	local mtdname="$1"
+	local offset="$2"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	get_mac_binary "$part" "$offset"
+}
+
+mtd_get_mac_binary_ubi() {
+	local mtdname="$1"
+	local offset="$2"
+
+	. /lib/upgrade/nand.sh
+
+	local ubidev=$(nand_find_ubi $CI_UBIPART)
+	local part=$(nand_find_volume $ubidev $1)
+
+	get_mac_binary "/dev/$part" "$offset"
+}
+
+mtd_get_part_size() {
+	local part_name=$1
+	local first dev size erasesize name
+	while read dev size erasesize name; do
+		name=${name#'"'}; name=${name%'"'}
+		if [ "$name" = "$part_name" ]; then
+			echo $((0x$size))
+			break
+		fi
+	done < /proc/mtd
+}
+
+mmc_get_mac_ascii() {
+	local part_name="$1"
+	local key="$2"
+	local part
+
+	part=$(find_mmc_part "$part_name")
+	if [ -z "$part" ]; then
+		echo "mmc_get_mac_ascii: partition $part_name not found!" >&2
+		return
+	fi
+
+	get_mac_ascii "$part" "$key"
+}
+
+mmc_get_mac_binary() {
+	local part_name="$1"
+	local offset="$2"
+	local part
+
+	part=$(find_mmc_part "$part_name")
+	get_mac_binary "$part" "$offset"
+}
+
+macaddr_add() {
+	local mac=$1
+	local val=$2
+	local oui=${mac%:*:*:*}
+	local nic=${mac#*:*:*:}
+
+	nic=$(printf "%06x" $((0x${nic//:/} + val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
+	echo $oui:$nic
+}
+
+macaddr_generate_from_mmc_cid() {
+	local mmc_dev=$1
+
+	local sd_hash=$(sha256sum /sys/class/block/$mmc_dev/device/cid)
+	local mac_base=$(macaddr_canonicalize "$(echo "${sd_hash}" | dd bs=1 count=12 2>/dev/null)")
+	echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${mac_base}")")"
+}
+
+macaddr_geteui() {
+	local mac=$1
+	local sep=$2
+
+	echo ${mac:9:2}$sep${mac:12:2}$sep${mac:15:2}
+}
+
+macaddr_setbit() {
+	local mac=$1
+	local bit=${2:-0}
+
+	[ $bit -gt 0 -a $bit -le 48 ] || return
+
+	printf "%012x" $(( 0x${mac//:/} | 2**(48-bit) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
+}
+
+macaddr_unsetbit() {
+	local mac=$1
+	local bit=${2:-0}
+
+	[ $bit -gt 0 -a $bit -le 48 ] || return
+
+	printf "%012x" $(( 0x${mac//:/} & ~(2**(48-bit)) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
+}
+
+macaddr_setbit_la() {
+	macaddr_setbit $1 7
+}
+
+macaddr_unsetbit_mc() {
+	local mac=$1
+
+	printf "%02x:%s" $((0x${mac%%:*} & ~0x01)) ${mac#*:}
+}
+
+macaddr_random() {
+	local randsrc=$(get_mac_binary /dev/urandom 0)
+	
+	echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${randsrc}")")"
+}
+
+macaddr_canonicalize() {
+	local mac="$1"
+	local canon=""
+
+	mac=$(echo -n $mac | tr -d \")
+	[ ${#mac} -gt 17 ] && return
+	[ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
+
+	for octet in ${mac//[\.:-]/ }; do
+		case "${#octet}" in
+		1)
+			octet="0${octet}"
+			;;
+		2)
+			;;
+		4)
+			octet="${octet:0:2} ${octet:2:2}"
+			;;
+		12)
+			octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
+			;;
+		*)
+			return
+			;;
+		esac
+		canon=${canon}${canon:+ }${octet}
+	done
+
+	[ ${#canon} -ne 17 ] && return
+
+	printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
+}
+
+dt_is_enabled() {
+	grep -q okay "/proc/device-tree/$1/status"
+}