Artesyn ATCA-8330 Installation and Use (April 2015) - Manual (Page 163)

Intelligent Peripheral Management Controller
ATCA-8330 Installation and Use (6806800S82B) 163
The firmware progress sensor is of type 0x0F (System Firmware Progress) and is used to pass
payload status information to the IPMC, which is then logged to the SEL (both local and
remote). While payload is booting, the payload will log events to the Firmware Progress Sensor
to indicate where its boot process is currently in it.
The boot error sensor is of type 0x1E (Boot Error) and is used to pass boot failure information
to the IPMC, which is then logged to the SEL.
The OS Boot sensor is of type 0x1F (OS Boot) and is used to inform the IPMC when the
Operating System has completed its boot up sequence.
7.4.2 Boot Bank Supervision Sensor
The boot bank supervision sensor is intended to always give the actual boot bank, from which
the payload has booted last. The boot bank information received from this sensor may differ
from the boot bank selection performed, in case boot bank selection has changed after the
payload has booted.
7.4.3 Post Result Sensor
The POST results sensor is of type 0x28 (Management subsystem health) returning information
about whether the power-on self-test (POST) of the IPMI firmware passes or not. For more
details about POST, see
POST on page 166 .
7.4.4 Power Good Sensor
The Payload Power sensor is of type 0x08 (Power Supply) that reports the state of the payload
power. Since the Digital Power Monitor can disable payload power on its own due to a faulty
DC-DC converter, the IPMC monitors the health and will report an event in the case where the
Digital Power Monitor disables power on its own. As a result of this, the IPMC will pro-actively
transition the IPMC from M4 to M6 (to M1) with a cause code of 0x09 (Unexpected
Deactivation). This automatic shutdown is meant to keep the IPMC's state in-line with the
payload state.