Initial commit

meta-bytedance/meta-g220a/recipes-phosphor/datetime/me-time-sync/me-time-sync.service

@@ -0,0 +1,18 @@
+[Unit]
+Description=Sync time from ME
+Wants=ipmb.service
+After=ipmb.service
+
+#ipmb may not ready for communication when
+#me-time-sync start, add some retry
+[Service]
+Type=simple
+Restart=always
+StartLimitInterval=90
+StartLimitBurst=5
+ExecStart=/usr/bin/me-time-sync.sh
+RemainAfterExit=yes
+
+
+[Install]
+WantedBy=multi-user.target

meta-bytedance/meta-g220a/recipes-phosphor/datetime/me-time-sync/me-time-sync.sh

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+#!/bin/bash
+
+set -e
+
+# Get time from ME via ipmb
+# The last 4 bytes are the epoch time, e.g.
+# (iyyyyay) 0 11 0 72 0 4 18 169 82 95
+ret=$(busctl call xyz.openbmc_project.Ipmi.Channel.Ipmb "/xyz/openbmc_project/Ipmi/Channel/Ipmb" org.openbmc.Ipmb sendRequest yyyyay 0x01 0x0a 0x00 0x48 0)
+
+IFS=' ' read -r -a a <<< "${ret}"
+
+if [ "${a[1]}" -ne 0 ]
+then
+  echo "Failed to get time from ME: ${ret}"
+  exit 1
+fi
+
+t0=$((a[7]))
+t1=$((a[8]*256))
+t2=$((a[9]*256*256))
+t3=$((a[10]*256*256*256))
+t=$((t0+t1+t2+t3))
+echo "Setting date to ${t}"
+
+date -s @${t}