Non-Maskable Interrupt Handling; Bios Server Management; Ipmi; Table 32. Nmi Error Messages - Intel 5000 Series Datasheet

System BIOS

3.17 Non-Maskable Interrupt Handling

Non-maskable interrupts are generated by two sources: by a front panel NMI button press or by
the BIOS to halt the system upon detecting a system fatal error. The BIOS installs a default NMI
handler that displays a system error message and then halts the system. The BIOS NMI handler
is active during POST and the operating system installs its own handler to handle NMI during
operating system runtime.
When the BIOS NMI handler is active, the BIOS handler detects the source of the NMI and
display a system error message before halting the system. The table below shows the error
messages that may be displayed.
NMI Source
FP NMI button
System Error NMI

3.18 BIOS Server Management

The BIOS supports many standards-based server management features and several proprietary
features. The Intelligent Platform Management Interface (IPMI) is an industry standard and
defines standardized, abstracted interfaces to platform management hardware. This chapter
describes the implementation of the IPMI features.

3.19 IPMI

Intelligent platform management refers to autonomous monitoring and recovery features that
are implemented in platform hardware and firmware. Platform management functions such as
inventory, the event log, monitoring, and system health reporting are available without help from
the host processors and when the server is in a powered down state, as long as AC power is
attached. The baseboard management controller (BMC) and other controllers perform these
tasks independently of the host processor. The BIOS interacts with the platform management
controllers through standard interfaces.
The BIOS enables the system interface to the BMC in early POST. The BIOS logs system
events and POST error codes during the system operation. The BIOS logs a boot event to BMC
early in POST. The events logged by the BIOS follow the Intelligent Platform Management
Interface Specification, Version 2.0.
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Intel® 5000 Series Chipsets Server Board Family Datasheet

Table 32. NMI Error Messages

Front Panel NMI activated - System Halted
NMI has been received - System Halted
Intel order number D38960-004
System Error Message
Revision 1.1