bytedance: g220a:read eeprom mac addr
read a byte at one time eg:
for the first byte
i2cset -y 1 0x50 0x00 0x00
i2cget -y 1 0x50
(From meta-bytedance rev: 6389a4f03a518e49241d13843cf005f4a85d7cc8)
Tested: Verify the eeprom mac addr can be read
use `fw_printenv`,`ip a` can read device
mac addr
Signed-off-by: Lotus Xu <xuxiaohan@bytedance.com>
Change-Id: I5fbf28e5bb3bb2ccc2a074388f4166e35da48afc
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr/mac-check b/meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr/mac-check
new file mode 100644
index 0000000..2580007
--- /dev/null
+++ b/meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr/mac-check
@@ -0,0 +1,130 @@
+#!/bin/sh
+# Copyright 2018 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+SOFS_MNT=/var/sofs
+SOFS_MACDIR=${SOFS_MNT}/factory-settings/network/mac
+
+read_hw_mac() {
+ local iface="$1"
+ cat /sys/class/net/"$iface"/address 2>/dev/null
+}
+
+set_hw_mac() {
+ local iface="$1"
+ local mac="$2"
+ ip link show dev "$iface" | grep -q "${iface}:.*\<UP\>" 2>/dev/null
+ local up=$?
+ [[ $up -eq 0 ]] && ip link set dev "$iface" down
+ ip link set dev "$iface" address "$mac"
+ [[ $up -eq 0 ]] && ip link set dev "$iface" up
+}
+
+read_sofs_mac() {
+ local iface="$1"
+ cat "${SOFS_MACDIR}/${iface}" 2>/dev/null
+}
+
+read_fw_env_mac() {
+ local envname="$1"
+ fw_printenv "$envname" 2>/dev/null | sed "s/^$envname=//"
+}
+
+set_fw_env_mac() {
+ local envname="$1"
+ local mac="$2"
+ fw_setenv "$envname" "$mac"
+}
+read_eeprom_mac() {
+ local iface="$1"
+ a=0
+ if [ $iface = "eth1" ];then
+ a=8
+ fi
+ for ((i=a;i <= ((7+a));i++));do
+ i2cset -y 1 0x50 0x00 $i
+ tmp=`i2cget -y 1 0x50`
+ local mac[$i]=${tmp:2}
+ local mac_str=$mac_str:${mac[$i]}
+ done
+ mac_str=${mac_str:1:17}
+ echo $mac_str 2>/dev/null
+}
+
+create_macdir() {
+if [ -a ${SOFS_MACDIR} ]; then
+ if [ ! -d ${SOFS_MACDIR} ]; then
+ rm -rf ${SOFS_MACDIR}
+ mkdir -p ${SOFS_MACDIR}
+ fi
+else
+ mkdir -p ${SOFS_MACDIR}
+fi
+return 0
+}
+
+mac_check() {
+ local iface="$1"
+ local envname="$2"
+
+ # Read the MAC address in use by the NIC
+ local hw_mac=$(read_hw_mac "$iface")
+
+ # Read the MAC address stored in the non-volatile file provisioned in
+ # manufacturing.
+ local sofs_mac=$(read_sofs_mac "$iface")
+
+ local eeprom_mac=$(read_eeprom_mac "$iface")
+ if [ -n "$eeprom_mac" ] && [ -z "$sofs_mac"]; then
+ set_hw_mac "$iface" "$eeprom_mac"
+ set_fw_env_mac "$envname" "$eeprom_mac"
+ return $?
+ elif [ -n "$sofs_mac" ] && [ "$hw_mac" != "$sofs_mac" ]; then
+ # 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.
+ set_hw_mac "$iface" "$sofs_mac"
+ set_fw_env_mac "$envname" "$sofs_mac"
+ return $?
+ elif [ -n "$hw_mac" ]; then
+ # Read the MAC address stored by U-Boot
+ local fw_env_mac=$(read_fw_env_mac "$envname")
+ if [ -z "$fw_env_mac" ] || [ "$fw_env_mac" != "$hw_mac" ]; then
+ set_fw_env_mac "$envname" "$hw_mac"
+ return $?
+ fi
+ else
+ # Could not identify a MAC address
+ return 255
+ fi
+
+ return 0
+}
+
+create_macdir
+
+error=0
+first_error_seen=0
+
+while read IFACE UBDEV; do
+ mac_check "$IFACE" "$UBDEV"
+ error=$?
+ if [ $error -ne 0 ] && [ $first_error_seen -eq 0 ]; then
+ first_error_seen=$error
+ fi
+done <<-END_CONF
+ eth0 eth1addr
+ eth1 ethaddr
+END_CONF
+exit $first_error_seen