MPCBL0010 SBC—Hardware Management Overview

10.4IPMB Link Sensor

The MPCBL0010 SBC 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 buses are actively used for communication at any point. A request might be received over IPMB Bus A, and the response 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 events are written to the MPCBL0010 SBC 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.

10.5Field 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 on the MPCBL0010 SBC includes data describing the SBC as specified in the PICMG 3.0 requirements. Additional multi-records are added for the BIOS to write CPU information, BIOS version number, and PMC information to the FRU data correctly. This information is retrieved by the AdvancedTCA shelf manager (ShMC), enabling reporting of board-specific information through an out-of-band mechanism. Table 113 lists the definitions for the multi-record implemented by the firmware as part of the FRU data.

Note: The MPCBL0010 SBC provides 512 bytes of space to store custom FRU information. See Section 10.6, “Customizable FRU Area” for more information.

Table 113. FRU Multi-Record Data for CPU/RAM/PMC/BIOS Version Information

Variable

Size

Data

Type

(bytes)

 

 

 

 

 

 

 

Manufacturer ID (Intel IANA number)

3

0x000157 (LSB first, MSB next)

Binary

 

 

 

 

Record Version

1

1

Binary

 

 

 

 

Type/Length

1

1

Binary

 

 

 

 

CPU Numbers

1

1

Binary

 

 

 

 

Type/Length

1

2

Binary

 

 

 

 

RAM Info

2

X (in units of 1 MByte)

Binary

 

 

 

 

Type/Length

1

(4 * XXX) + 1

Binary

 

 

 

 

Number of PMCs

1

0

Binary

 

 

 

 

Type/Length

1

0xFF

Binary

 

 

 

 

BIOS Version

63

yyyyyyyy

ASC-II

 

 

 

 

End of fields

1

0xC1

Binary

 

 

 

 

Intel NetStructure® MPCBL0010 Single Board Computer

 

Technical Product Specification

October 2006

126

Order Number: 304120

Page 127
Image 127
Intel Intel NetStructure Single Board Computer, MPCBL0010 Ipmb Link Sensor, Field Replaceable Unit FRU Information, Asc-Ii