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gemini: Use library functions to assign MAC address

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This simplifies the ethernet address extraction script
by using standard library functions to locate the MTD
partitions and extract ethernet address from a binary
offset location in the flash. Furthermore, the aging
ifconfig is replaced by the ip tool, which will now
assign the MAC addresses.

Suggested-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[ifconfig replacement, use -n instead of ! -z,
-n requires string to be quoted within the test brackets,
drop prepended "x" in check, add quotes, make local
variables local, kill whitespaces]
This commit is contained in:
Linus Walleij 2019-06-11 23:06:53 +02:00 committed by Christian Lamparter
parent bdbb679adb
commit cd6c3535cd
1 changed files with 22 additions and 14 deletions
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36
target/linux/gemini/base-files/lib/preinit/05_set_ether_mac_gemini
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@ -1,25 +1,33 @@
#!/bin/sh
set_ether_mac() {
# Most devices have a standard "VCTL" partition
CONFIG_PARTITION="$(grep "VCTL" /proc/mtd | cut -d: -f1)"
if [ ! -z $CONFIG_PARTITION ] ; then
MAC1="$(strings /dev/$CONFIG_PARTITION |grep MAC|cut -d: -f2|cut -c3-14|sed -e 's,\(..\),:\1,g' -e 's,^:,,')"
MAC2="$(strings /dev/$CONFIG_PARTITION |grep MAC|cut -d: -f8|cut -c3-14|sed -e 's,\(..\),:\1,g' -e 's,^:,,')"
. /lib/functions.sh
. /lib/functions/system.sh
ifconfig eth0 hw ether $MAC1 2>/dev/null
ifconfig eth1 hw ether $MAC2 2>/dev/null
set_ether_mac() {
local part
local DEVID
local MAC1
local MAC2
# Most devices have a standard "VCTL" partition
part="$(find_mtd_part VCTL)"
if [ -n "$part" ]; then
MAC1="$(strings $part |grep MAC|cut -d: -f2|cut -c3-14|sed -e 's,\(..\),:\1,g' -e 's,^:,,')"
MAC2="$(strings $part |grep MAC|cut -d: -f8|cut -c3-14|sed -e 's,\(..\),:\1,g' -e 's,^:,,')"
ip link set eth0 address "$MAC1" 2>/dev/null
ip link set eth1 address "$MAC2" 2>/dev/null
return 0
fi
# The DNS-313 has a special field in its RedBoot
# binary that we need to check
CONFIG_PARTITION="$(grep "RedBoot" /proc/mtd | cut -d: -f1)"
if [ ! -z $CONFIG_PARTITION ] ; then
DEVID="$(dd if=/dev/mtdblock0 bs=1 skip=119508 count=7 2>/dev/null)"
if [ "x$DEVID" = "xdns-313" ] ; then
MAC1="$(dd if=/dev/mtdblock0 bs=1 skip=119540 count=6 2>/dev/null | hexdump -n6 -e '/1 ":%02X"' | sed s/^://g)"
ifconfig eth0 hw ether $MAC1 2>/dev/null
part="$(find_mtd_part RedBoot)"
if [ -n "$part" ]; then
DEVID="$(dd if=$part bs=1 skip=119508 count=7 2>/dev/null)"
if [ "$DEVID" = "dns-313" ]; then
MAC1="$(mtd_get_mac_binary RedBoot 119540)"
ip link set eth0 address "$MAC1" 2>/dev/null
return 0
fi
fi