Intel® Server Board SE7520JR2

Platform Management

5.3.12Field Replaceable Unit (FRU) Inventory Devices

An enterprise-class system typically has FRU information for each major system board, (processor board, memory board, I/O board, etc.). The FRU data includes information such as serial number, part number, model, and asset tag. This information can be accessed in two ways: through IPMI FRU commands or by using Master Write-Read commands.

The mBMC provides FRU device command access to its own FRU device. The mBMC implements the interface for logical FRU inventory devices as specified in the Intelligent Platform Management Interface Specification, Version 1.5. This functionality provides commands used for accessing and managing the FRU inventory information associated with the mBMC (FRU ID 0). These commands can be delivered over the Host and LAN channel interfaces.

5.3.12.1mBMC FRU Inventory Area Format

The mBMC FRU inventory area format follows the Platform Management FRU Information Storage Definition. See the Platform Management FRU Information Storage Definition, Version

1.0for details.

The mBMC provides only low-level access to the FRU inventory area storage. It does not validate or interpret the data that is written. This includes the common header area. Applications cannot relocate or resize any FRU inventory areas.

5.3.13NMI Generation

The mBMC-generated NMI pulse duration is 200 ms. The following may cause the mBMC to generate an NMI pulse:

•Receiving a Chassis Control command issued from one of the command interfaces. Use of this command will not cause an event to be logged in the SEL.

•Detecting that the control panel Diagnostic Interrupt button has been pressed. Use of this command will cause a button event to be logged into the SEL Type code - 13h (Critical Interrupt), Sensor Specific offset – 6Fh

•A PEF table entry matching an event where the filter entry has the NMI action indicated.

•Watchdog timer pre-timeout expiration with NMI pre-timeout action enabled.

Once an NMI has been generated by the mBMC, the mBMC will not generate another until the system has been reset or powered down.

5.3.14SMI Generation

The mBMC can be configured to generate an SMI due to Watchdog timer pre-timeout expiration with SMI pre-timeout interrupt specified.

5.3.15Event Message Reception

The mBMC supports externally (e.g., BIOS) generated events via the Platform Event Message command. Events received via this command will be logged to the SEL and processed by PEF.

Revision 1.0

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C78844-002