tree 3f025cfedbfecef6af7fc40eb68838e91cb18a38
parent 5795dacbc5763a0f1d1e1ac59d73baf4ca2ae616
author Tim Lee <timlee660101@gmail.com> 1628041967 +0800
committer Tim Lee <timlee660101@gmail.com> 1628041967 +0800

Add LastRebootCause property for BMC Reboot Cause feature

Scenario:
Customer want to know the last reboot cause of BMC through OpenBMC WebUI.
Thus, we need to add LastRebootCause property in BMC.interface.yaml.
Meanwhile, we also modify phosphor-state-manager and phosphor-webui
to support show BMC Reboot Cause information in Reboot BMC page.

Tested:
busctl get-property xyz.openbmc_project.State.BMC /xyz/openbmc_project/state/bmc0 xyz.openbmc_project.State.BMC LastRebootCause

When unplug/plug in BMC power cable then return as below: (POR i.e. Power-On-Reset)
s "xyz.openbmc_project.State.BMC.BMCResetCause.POR"

When executing reboot command then return as below:
s "xyz.openbmc_project.State.BMC.BMCResetCause.Watchdog"

Signed-off-by: Tim Lee <timlee660101@gmail.com>
Change-Id: Iac99adc1e12ab42076f0d33aa87a179f63b9c1ce