ramips: add a script to fix up the broken mac address on the witi board
authorFelix Fietkau <nbd@openwrt.org>
Fri, 1 Jan 2016 18:57:39 +0000 (18:57 +0000)
committerFelix Fietkau <nbd@openwrt.org>
Fri, 1 Jan 2016 18:57:39 +0000 (18:57 +0000)
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48027

target/linux/ramips/base-files/sbin/fixup-mac-address [new file with mode: 0755]
target/linux/ramips/dts/WITI.dts

diff --git a/target/linux/ramips/base-files/sbin/fixup-mac-address b/target/linux/ramips/base-files/sbin/fixup-mac-address
new file mode 100755 (executable)
index 0000000..6e3bac4
--- /dev/null
@@ -0,0 +1,79 @@
+#!/bin/sh
+. /lib/functions.sh
+. /lib/functions/system.sh
+
+partname=""
+offset=""
+NEW_MAC=
+YES=
+
+case "$(cat /tmp/sysinfo/board_name)" in
+       witi)
+               partname=factory
+               offset=$((0xe000))
+       ;;
+       *)
+               echo "Unsupported board"
+               exit 1
+       ;;
+esac
+
+while [ -n "$1" ]; do
+       case "$1" in
+               ??:??:??:??:??:??) NEW_MAC="$1";;
+               -y) YES=1;;
+               *)
+                       cat <<EOF
+Unknown option/argument '$1'
+Usage: $0 [-y] [<macaddr>]
+EOF
+                       exit 1
+               ;;
+       esac
+       shift
+done
+
+ask_bool() {
+       local message="$1"
+       local default="$((! ${2:-0}))"
+       [ -n "$YES" ] && return 0
+       echo -n "$message "
+       read opt
+       case "$opt" in
+               y|Y) return 0;;
+               n|N) return 1;;
+               *) return $default;;
+       esac
+}
+
+convert_hex() {
+       hexdump -e '/1 "%02x "'
+}
+
+gen_mac() {
+       dd if=/dev/urandom bs=6 count=1 2>/dev/null
+}
+
+mac="$(mtd_get_mac_binary $partname $offset)"
+case "$mac" in
+       00:00:00:00:00:00);;
+       ff:ff:ff:ff:ff:ff);;
+       *)
+               echo "Current MAC address: $mac"
+               ask_bool "Overwrite (y/N)?" 0 || exit
+       ;;
+esac
+
+if [ -n "$NEW_MAC" ]; then
+       set -- $(echo "$NEW_MAC" | sed 's,:, ,g')
+else
+       set -- $(gen_mac | convert_hex)
+       set -- $(printf %02x $(( (0x$1 & 0xfe) | 0x02 ))) $2 $3 $4 $5 $6
+fi
+echo "New MAC address: $1:$2:$3:$4:$5:$6"
+ask_bool "Write to EEPROM (y/N)?" || exit
+
+part=$(find_mtd_part "$partname")
+[ -n "$part" ] || exit
+echo -ne "\x$1\x$2\x$3\x$4\x$5\x$6" | dd of=$part conv=notrunc bs=1 count=6 seek=$offset 2>/dev/null
+echo "Done"
index 9b03147..53a3da1 100644 (file)
@@ -50,7 +50,6 @@
                                factory: partition@40000 {
                                        label = "factory";
                                        reg = <0x40000 0x10000>;
-                                       read-only;
                                };
 
                                partition@50000 {