add an upstart script: vpd-log.conf

vpd-log.conf

+# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+description     "dumps VPD information for chrome://system"
+author          "chromium-os-dev@chromium.org"
+
+# VPD (Vital Product Data) information is shown on chrome://system for
+# user, feedback, and partner's customer service center.
+#
+# This script will read VPD from BIOS and dump into /var/log/vpd_2.0.txt.
+# It should be executed at least once some time after boot and before user
+# types "chrome://system" in chrome location bar.
+#
+# Since VPD utility could invoke flashrom utility to access BIOS, which is
+# slow, this script should be run after calculating boot time.
+# Hence, later than boot-complete can be acceptable.
+start on stopped boot-complete
+
+script
+  VPD_2_0="/var/log/vpd_2.0.txt"
+  TMP="/tmp/vpd.bin"
+
+  # Since we don't change the VPD data too often, only create the log file
+  # if it does not exist.
+  if [ ! -f $VPD_2_0 ]; then
+    if flashrom -r $TMP > /dev/null ; then
+      vpd -f $TMP -i "RO VPD" -l || echo "RO VPD execute error."
+      vpd -f $TMP -i "RW VPD" -l || echo "RW VPD execute error."
+    else
+      echo "flashrom execute error."
+    fi >> $VPD_2_0
+    rm -f $TMP
+  fi
+end script