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Intel® SHG2 DP Server Board Technical Product Specification Error Reporting and Handling
Revision 1.0 Intel Order Number C11343-001
37
Event Trigger
Class
Event Data
Event Data 2
7:4 Optional offset from ‘Severity’ Event Trigger. (0Fh if unspecified).
3:0 Optional offset from Event Trigger for previous discrete event state. 0Fh if
unspecified.
6.3 System Management Interrupt (SMI) Handler
The SMI handler is used to handle and log system level events that are not visible to the server
management firmware. The SMI handler will preprocess all system errors; this includes errors
that are normally considered to generate an NMI. The SMI handler sends a command to the
BMC to log the event and provides the data to be logged, a Set NMI Source command to
indicate BIOS as the source of the NMI, and a BIOS LCD command to display the Liquid
Crystal Display (LCD) and LED messages. A correctable memory error does not generate an
SMI. Correctable and uncorrectable memory errors are handled and logged by the BMC.
6.3.1 PCI Bus Error
The PCI bus defines two error pins, PERR# and SERR#, for reporting PCI parity errors and
system errors, respectively.
6.3.2 Intel
Xeon
Processor Bus Error
In the case of irrecoverable errors on the host processor bus, proper execution of the SMI
handler cannot be guaranteed and the SMI handler cannot be relied upon to log such
conditions. The BIOS SMI handler records the error to the SEL only if the system has not
experienced a catastrophic failure that compromises the integrity of the SMI handler. The BIOS
always enables the error correction and detection capabilities of the processors by setting
appropriate bits in the processor model-specific register (MSR).
6.3.3 Memory Bus Error
The BMC monitors and logs memory errors. The BIOS will configure the hardware to notify the
BMC on correctable and uncorrectable memory errors. Uncorrectable errors generate an SMI
to stop the system and prevent propagation of the error. The BMC will query the hardware for
error information when notified.
6.3.4 System Limit Error
The BMC monitors system operational limits. It manages the A/D converter, defining voltage
and temperature limits as well as fan sensors and chassis intrusion. Any sensor values outside
of specified limits are fully handled by BMC, and there is no need to generate an SMI to the
host processor.
6.3.5 Processor Failure
The BIOS detects processor built-in self test (BIST) failure and logs this event. The first OEM
data byte field in the log can identify the failed processor. For example, if processor 0 fails, the