tree a14cae7c9ee4a93dd7ead876ed9beff0d5d592d2
parent 358de95ee8e3c3237ecbcf7102f32f5062a32423
author NodeMan97 <corey.hardesty@icloud.com> 1653683325 -0500
committer Andrew Geissler <andrew@geissonator.com> 1659011364 +0000

Only run power restore on AC losses

Added a meson build option that allows the customer to enable automatic
power restore policy only for AC losses where the chassis power was
on prior to a BMC reset(and off when it comes back online).

The default is set to 'false' which provides the standard behavior of
APR which is to always run APR on an BMC reboot.
If the option 'only-run-apr-on-power-loss' is 'true' then APR is only
run in the case of the chassis losing power. AC power losses trigger the
creation of a file called 'chassis@0-lost-power' that identifies an
AC power loss has occurred. This generated file can be found in the
directory '/run/openbmc/'.

Tested:
    - Verified that when built with option 'only-run-apr-on-power-loss'
      set to false(default) that APR was ran.
    - Verified that when built with option 'only-run-apr-on-power-loss'
      set to true that apr was not ran when a power loss did not occur.
    - Verified that when built with option 'only-run-apr-on-power-loss'
      set to true that apr was only ran when a power loss occured.

Jun 08 01:55:13 p10bmc phosphor-chassis-state-manager[3009]:
            The system suffered a power blackout.

root@p10bmc:/lib/systemd/system# ls /run/openbmc/
chassis@0-lost-power

Signed-off-by: Corey Hardesty <corey.hardesty@icloud.com>
Change-Id: Iac37761416d699e3a469936e00868a8d9b6dfdb1