Kontron AM4311 - Manual (Page 25)

Functional Description
Page 10 AM4311 User Guide
2.2 MMC
The IPMI (Intelligent Platform Management Interface) consists of the FWUM (Firmware Upgrade Manager)
and the MMC (Module Management Controller).
The FWUM controls the MMC firmware update. Two EEPROM banks are connected to the FWUM, one for the old
firmware image and one for the new image. During an update, the new firmware image will be programmed
in one of the two EEPROMs. This new image is then programmed into the MMC under control of the FWUM. If
the MMC does not start correctly with the new image, the old image of the other EEPROM will be programmed
in the MMC.
2.3 Board Sensors
The Management Controller includes many sensors for voltage or temperature monitoring and various others
for pass/fail type signal monitoring.
Every sensor 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. SDRs also contain the configura-
tion of a specific sensor such as thresholds, hysteresis, event generation capabilities, etc. that specify the
sensor’s behavior. Some fields of the sensor SDR are configurable through IPMI v1.5 command and are set to
a built-in initial value.
Module sensors that have been implemented are listed in the sensor list below.
2.3.1 Sensor List
The sensor number is the number which identifies the sensor e.g. when using the IPMI command “Get Sensor
Reading”. Please note that ‘ipmitool’ accepts sensor numbers in decimal (e.g. ‘10’) or hexadecimal (e.g.
‘0xa’) notation.
Please note that the IPMI tool ‘ipmitool’ displays for command ‘ipmitool sdr list’ the contents of the sensor
data record repository (SDRR) of the whole rack if the SDRR is generated. The generation of the SDRR has
always to be done new after adding or subtracting any board to or from the rack.
For OEM (Kontron) specific sensor types and reading types in the following table, please refer to the next
chapter.
Table 2-3: Sensor List AM4311
ID Num ID string Sensor Type Code Event Type Code / Event Offsets
0 Xx B1:AM4311 NA (FRU Device Locator
Record)
1 0 B1:IPMI Info-1 C0h (OEM Kontron)
2 1 B1:IPMI Info-2 C0h (OEM Kontron)
3 2 B1:FRU Agent C5h (OEM Kontron FRU
Info Agent State) 0Ah (Discrete)
Offset 6: transition to Degraded
Offset 8: Install Error