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#!/bin/bash -eu
# SPDX-License-Identifier: Apache-2.0
# Copyright 2020-2021 YADRO
log_msg() {
echo "$@"
}
log_err() {
echo "$@" >&2
}
read_hw_mac() {
local iface="$1"
cat /sys/class/net/"${iface}"/address 2>/dev/null ||:
}
set_hw_mac() {
local iface="$1"
local mac="$2"
local up=""
if ip link show dev "${iface}" | grep -q "${iface}:.*\<UP\>" 2>/dev/null; then
up=true
fi
if [ "${up}" = true ]; then
ip link set dev "${iface}" down ||:
fi
ip link set dev "${iface}" address "${mac}" ||:
if [ "${up}" = true ]; then
ip link set dev "${iface}" up ||:
fi
}
set_fw_env_mac() {
local iface="$1"
local mac="$2"
local envname=""
case "${iface}" in
eth0)
envname="ethaddr"
;;
eth1)
envname="eth1addr"
;;
*)
return 1
;;
esac
if ! fw_setenv "$envname" "$mac"; then
return 1
fi
}
######## MAIN ########
FRU_DBUS_SERVICE="xyz.openbmc_project.FruDevice"
FRU_DBUS_OBJECT_TEMPLATE="\/xyz.*_Motherboard"
FRU_DBUS_INTERFACE="xyz.openbmc_project.FruDevice"
fru_dbus_object=""
######## Parse D-bus data ########
n=1
while true; do
fru_dbus_object=$(busctl tree ${FRU_DBUS_SERVICE} 2>/dev/null |
sed -n "s/^.*\(${FRU_DBUS_OBJECT_TEMPLATE}\).*$/\1/p"
) && [ -n "${fru_dbus_object}" ] && break
if [ ${n} -lt 15 ]; then
n=$((n+1))
sleep 1
else
log_err "Failed to find baseboard FRU object"
exit 1
fi
done
dbusData=$(dbus-send --system --print-reply=literal \
--dest=${FRU_DBUS_SERVICE} \
"${fru_dbus_object}" \
org.freedesktop.DBus.Properties.GetAll \
string:${FRU_DBUS_INTERFACE} 2>/dev/null ||:)
if [ -z "${dbusData}" ]; then
log_err "Failed to get data from D-Bus"
exit 1
fi
# This awk script matches strings 010xyyyyyyyyyyyy, where x is interface index
# and yyyyyyyyyyyy - interface mac address.
# The output would be in form ethx=yy:yy:yy:yy:yy:yy
macsList=$(echo "${dbusData}" | \
awk '/BOARD_INFO_AM[0-9]+\s+variant\s+010[0-9a-f]{13}/{
totalMacDigits=12
singleOctet=2
offset=4
printf "eth%s=", substr($3, offset, 1)
for(i = 1 + offset; i < totalMacDigits + offset; i += singleOctet) {
printf "%s", substr($3, i, singleOctet)
if (i <= totalMacDigits + offset - singleOctet) printf ":"
}
printf "\n"
}'||:)
if [ -z "${macsList}" ]; then
log_err "Failed to get MAC address"
exit 1
fi
# Get hardware model name from PRODUCT_PRODUCT_NAME
# Examples:
# 'VEGMAN N110 Server' -> 'VEGMAN-N110'
# 'TATLIN.ARCHIVE.XS' -> 'TATLIN-ARCHIVE-XS'
modelName=$(echo "${dbusData}" | \
awk '/PRODUCT_PRODUCT_NAME\s+variant\s+/{
if ($3 ~ /^VEGMAN/) {
printf "%s-%s", $3, $4
} else if ($3 ~ /^TATLIN/) {
print gensub(/\./, "-", "g", $3)
}
}'||:)
serialNumber=$(echo "${dbusData}" | \
awk '/PRODUCT_SERIAL_NUMBER\s+variant\s+/{print $3}'||:)
if [ -z "${serialNumber}" ]; then
log_err "Failed to get product Serial Number"
exit 1
fi
# shellcheck disable=SC1091
source /etc/os-release
######## Check and set MAC addresses ########
retCode=0
IFS='
'
for line in ${macsList} ; do
ifaceName=$(echo "${line}" | cut -f 1 -d '=' || :)
macAddr=$(echo "${line}" | cut -f 2- -d '=' || :)
if [ -n "${ifaceName}" ] && [ -n "${macAddr}" ]; then
curMacAddr=$(read_hw_mac "${ifaceName}")
if [ "${macAddr}" != "${curMacAddr}" ] ; then
log_msg "Changing MAC address for ${ifaceName}: ${curMacAddr} -> ${macAddr}"
# A factory assigned address was found, and it is newly assigned.
# Update the active interface and save the new value to the u-boot
# environment.
if ! set_hw_mac "${ifaceName}" "${macAddr}"; then
log_err "Failed to set address"
retCode=1
fi
if ! set_fw_env_mac "${ifaceName}" "${macAddr}"; then
log_err "Failed to set boot env for ${ifaceName}"
retCode=1
fi
fi
fi
[ ${retCode} -eq 0 ] || exit ${retCode}
done
######## Check and set hostname ########
hostname=$(hostname)
if [ "${OPENBMC_TARGET_MACHINE}" = "${hostname}" ] ; then
hostname="${modelName,,}-${serialNumber}"
log_msg "Changing hostname to ${hostname}"
if ! hostnamectl set-hostname "${hostname}-${SN}"; then
log_err "Failed to set new hostname"
exit 1
fi
fi
######## Run optional scripts ########
snmp_handler="/usr/sbin/snmpd-generate-conf.sh"
if [ -x ${snmp_handler} ]; then
if ! ${snmp_handler} "${modelName}"; then
log_err "Failed to setup snmp"
fi
fi
|
