Board Features
10
Firmware code that are stored in two external SEPROM memories. If a failure occurs during firmware
upgrade, the FWUM will automatically rollback to the redundant MMC firmware image.
2.7.1
Sensor Data Record (SDR)
Every sensor on the baseboard is associated with a Sensor Data Record (SDR). Sensor Data Records
contain information about the sensors identification such as sensor type, sensor name, sensor unit.
SDR also contain the configuration of a specific sensor such as threshold/hystheresis, event
generation capabilities that specifies sensor behaviour. Some fields of the sensor SDR are
configurable through IPMI v1.5 command and are set to built-in initial value. Finally one field wich
is the sensor owner must reflect the module addresses that allow the RTM to identify the owner of
the SDR when it is scanned from the module management controller and merged within the RTM
Device SDR repository.
From IPMI prespective, the RTM8020 management controller is set up as a satellite management
controller (SMC). It does support sensor devices, and use the IPMI static sensor population feature
of IPMI v1.5 to merge the hot swaped AMC sensor with the carrier board sensors population. The
usual way the RTM is informed about an RTM insertion is through the RTM Module Hot Swap sensor
and a radial presence line on the RTM connector. All SDRs can be queried using Device SDR
commands to the firmware. Module sensors that have been implemented are listed below.
2.7.2
Hardware Sensors
Sensor Name
Voltage/Signals Monitored
Scanning Enabled
under Power
State
Health LED
(Green to Red)
IPMI Info-1
Internal IPMC firmware diagnostic
*
N
IPMI Info-2
Internal IPMC firmware diagnostic
*
N
FRU Agent
Board FRU Data agent that verify FRU Data validity
*
N
Module HS
RTM HS State
*
N
IPMBL State
Operational state of IPMB-L
*
N
Storage Err
Management sub-system health: non volatile memory
error.
*
N
Board 3.3V
3.3 V
-
X
Board 3.3VSUS
3.3 V Suspend
*
X
Board 5V
5.0V
-
X
Board 12.0v
12.0 V
-
X
Board BlueLed
6.6 V
*
X
Temp AirInlet
Board Inlet Temperature
-
X
Temp Exhaust
Board Outlet Temperature
*
X
