Kontron AdvancedTCA AT8001 User Manual page 48

CPU Critical
Interrupt
System Firmware
Progress
Memory Error
IPMI Watchdog
Boot Error
System Event
ACPI State
EventRcv ComLost
IPMC Storage Err
Board Reset
2.16.2.1
The AT8001 provides two IPMB links to increase communication reliability to the shelf manager and
other IPM devices on the IPMB bus. These IPMB links work together for increased throughput where
both busses are actively used for communication at any point. A request might be received over
IPMB Bus A, and the response is sent over IPMB Bus B. Any requests that time out are retried on the
redundant IPMB bus. In the event of any link state changes, the event are written to the AT8001
SEL. IPMC monitors the bus for any link failure and isolates itself from the bus if it detects that it is
causing errors on the bus. Events are sent to signify the failure of a bus or, conversely, the recovery
of a bus.
2.16.2.2
The hot-swap event message conveys the current state of the FRU, the previous state, and a cause
of the state change as can be determined by the IPMC. Refer to PICMG 3.0 Specifications for further
details on the hot-swap state.
2.16.3 Field Replaceable Unit (FRU) Information
The FRU Information provides inventory data about the boards where the FRU Information Device is
located. The part number or version number can be read through software.
FRU information in the AT8001 includes data describing the AT8001 board as per PICMG 3.0
specification requirements. Additional multirecords will be added for the BIOS to write CPU
information, BIOS version number, and PMC information to FRU data correctly. This information is
retrieved by the shelf manager (ShMC), enabling reporting of board-specific information through
an out-of-band mechanism.
Following are the definitions for the multirecord implemented by the firmware as part of FRU data.
PCI SERR
PCI PERR
ECC Multiple Bit error
ECC Single Bit error
IPMC Watchdog Timer timeout
BIOS Main Flash
BIOS FRED Flash
System Event
Baseboard ACPI state
Communication lost with ShMc Power On/Off
SEEPROM error
Board Reset Source
IPMB Link Sensor
FRU Hot Swap
Power On
Power On
Power On
Power On
Power On
Power On/Off
Power On
Power On
Power On
Power On/Off
Power On/Off
Power On
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AT8001 User's Guide