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92 CPCI-7806/CPCI-7806RC Pentium/Celeron M Universal CompactPCI Single Board Computer
Publication No. 500-657806-000 Rev. G
E.6 Chassis Control
All Abaco IPMI-enabled boards include extra circuitry to enable the IPMI
controller to monitor and control certain CompactPCI signals. These functions are
controlled by sending IPMI packets from the CPCI-7806/CPCI-7806RC processor
cards to the controller.
E.6.1 Get Geographical Address
This command returns the Slave Address based on the Geographical Slot the
board is inserted into.
E.7 BMC Functions
The Abaco IPMI firmware can perform some of the functions of a Baseboard
Management Controller. The firmware can send IPMI commands to other targets
on the IPMB on behalf of the CPCI-7806/CPCI-7806RC, and return the responses
to the CPCI-7806/CPCI-7806RC. It can also forward any platform events it
receives to the CPCI-7806/CPCI-7806RC.
E.7.1 IPMB Relay
This command allows the CPCI-7806/CPCI-7806RC, connected to the Zircon’s
I
2
C1 bus, to have the Zircon send a command on its I
2
C0 bus (which is connected
to the IPMB pins on the backplane), and for the Zircon to send the response to that
command back to the CPCI-7806/CPCI-7806RC on I
2
C1.
NOTE
The Zircon will accept an IPMB Relay request on its I
2
C0 bus, but it will always send the response to the
I
2
C1 bus. Therefore, any device on the IPMB that sends an IPMB Relay request to the Zircon will not
receive a response.
If the request is successfully sent, then the response will be the actual response
from the target system, with only a few header bytes changed to have it sent back
to the CPCI-7806/CPCI-7806RC.
If the request cannot be relayed (due to a device not responding, or the Zircon
temporarily being out of memory), the response to this command will use the
NetFn and Cmd for IPMB Relay, and a completion code only.
Table E-19 NetFn 0x30, Cmd 0x01
Byte
Value
Data Field
Comments
Request-data
-
-
Response-data
1
XXh
Completion code
2
XXh
Geographical address