commit 58c4886c6077d6b1e70be7ae38b25537963ae781
author Lotus Xu <xuxiaohan@bytedance.com> Tue Oct 27 15:00:31 2020 +0800
committer Andrew Geissler <geissonator@yahoo.com> Thu Dec 31 10:41:08 2020 -0600
tree f69e39d1754356a0107cf2007ca1be3eed0a3703
parent bad8d82c5c28a2dcda255807ac0f617ba7ab7a97

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>

meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr.bb

diff --git a/meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr.bb b/meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr.bb
new file mode 100644
index 0000000..130187d
--- /dev/null
+++ b/meta-bytedance/meta-g220a/recipes-network/network/static-mac-addr.bb
@@ -0,0 +1,24 @@
+SUMMARY = "Enforce static MAC addresses"
+DESCRIPTION = "Set a priority on MAC addresses to run with: \
+               factory-specified > u-boot-specified > random"
+
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+PR = "r1"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
+
+inherit allarch
+SRC_URI = "\
+    file://mac-check \
+    file://${PN}.service \
+    "
+
+inherit obmc-phosphor-systemd
+
+SYSTEMD_SERVICE_${PN} += "${PN}.service"
+
+do_install() {
+    install -d ${D}${bindir}
+    install -m 0755 ${WORKDIR}/mac-check ${D}${bindir}
+}