Technical Product Specification

Intel
®
Server Board S2400EP TPS Platform Management Functional Overview
Revision 2.0 Intel order number G50763-002
61
The BIOS gets the watchdog expiration status from the BMC. If the status shows an expired
FRB2 timer, the BIOS enters the failure in the system event log (SEL). In the OEM bytes entry
in the SEL, the last POST code generated during the previous boot attempt is written. FRB2
failure is not reflected in the processor status sensor value.
The FRB2 failure does not affect the front panel LEDs.
6.6 Sensor Monitoring
The BMC monitors system hardware and reports system health. Some of the sensors include
those for monitoring
 Component, board, and platform temperatures
 Board and platform voltages
 System fan presence and tach
 Chassis intrusion
 Front Panel NMI
 Front Panel Power and System Reset Buttons
 SMI timeout
 Processor errors
The information gathered from physical sensors is translated into IPMI sensors as part of the
“IPMI Sensor Model”. The BMC also reports various system state changes by maintaining
virtual sensors that are not specifically tied to physical hardware.
See Appendix B – Integrated BMC Sensor Tables for additional sensor information.
6.7 Field Replaceable Unit (FRU) Inventory Device
The BMC implements the interface for logical FRU inventory devices as specified in the
Intelligent Platform Management Interface Specification, Version 2.0. This functionality provides
commands used for accessing and managing the FRU inventory information. These commands
can be delivered through all interfaces.
The BMC provides FRU device command access to its own FRU device and to the FRU
devices throughout the server. The FRU device ID mapping is defined in the Platform Specific
Information. The BMC controls the mapping of the FRU device ID to the physical device
System Event Log (SEL)
The BMC implements the system event log as specified in the Intelligent Platform Management
Interface Specification, Version 2.0. The SEL is accessible regardless of the system power
state through the BMC's in-band and out-of-band interfaces.
The BMC allocates 65,502 bytes (approximately 64 KB) of non-volatile storage space to store
system events. The SEL timestamps may not be in order. Up to 3,639 SEL records can be
stored at a time. Any command that results in an overflow of the SEL beyond the allocated
space is rejected with an “Out of Space” IPMI completion code (C4h).