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.
+
+# vpd-log
+#
+# when boot reaches login prompt, dumps VPD information from RO and RW
+# partitions.
+
+start on stopped boot-complete

[Chris Masone, 2011/02/24 06:25:34]

There may be a better time to trigger this, and a way to make it so it just
happens once per boot -- not every time the login screen comes back up.  Please
add jrbarnette as a reviewer and ask him to chime in.

[Louis, 2011/02/24 10:21:55]

I intended putting this after boot-complete so that it doesn't affect the boot
time calculation.

However, since the VPD information is not changed frequently, I can modify the
script so that it won't dump VPD if a cached file exists.

See incoming changes this CL.

On 2011/02/24 06:25:34, Chris Masone wrote:

+
+# This is run-once rather than a service.
+task

[Chris Masone, 2011/02/24 06:25:34]

Heh.  I recently found out from jrbarnette that we've been using "task" wrong
all this time :-/

This should actually just be taken out.  As long as you don't say "respawn",
it'll just run once per "boot-complete"

[Louis, 2011/02/24 10:21:55]

Done.

+
+pre-start script
+  VPD_2_0="/var/log/vpd_2.0.txt"
+  TMP="/tmp/vpd.bin"
+end script
+
+script
+
+  rm -f $VPD_2_0
+  touch $VPD_2_0
+
+  if [ -x /usr/sbin/vpd -a -x /usr/sbin/flashrom ]; then
+    flashrom -r $TMP > /dev/null || echo "flashrom execute error."
+    vpd -f "$TMP" -i "RO VPD" -l || echo "RO VPD execute error."
+    vpd -f "$TMP" -i "RW VPD" -l || echo "RW VPD execute error."
+    rm -f $TMP
+  else
+    echo "Unable to dump VPD 2.0 data."
+  fi >> $VPD_2_0
+
+end script