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50 Intel NetStructure
®
MPCBL0001 High Performance Single Board Computer
Technical Product Specification
Hardware Management Overview
3.7.6 Get Control State
This command sets the state of a control pin. This command overrides the AUTO-state of the
control pin. Refer to Table 20 on page 50 for control number information.
3.7.7 Get Port80 Data
This command returns the last byte value written by the BIOS to Port 80 since the last System
Reset. If no data has been written to the port since System Reset, the Completion Code returned is
CBh.
3.8 Controls Identifier Table
Table 20 below lists the control identifiers that can be used with Set/Get Control State IPMI
commands to query or set information on certain controls in the firmware.
Table 18. Get Control State
76543210
NetFn/LUN NetFn = 3Eh (OEM Request) RsLUN
Command Cmd = 21h
Byte 1 Control number
Byte 1 Completion code
Byte 2 Control state, 0 = Deassert, 1 = Assert, 3 = Reserved, FF = Don’t change settings
Table 19. Get Port80 Data
76543210
NetFn/LUN NetFn = 30h (OEM Request) RsLUN
Command Cmd = 2Dh
Byte 1 — (BLANK)
Byte 1 Completion code
Byte 2 Last Port 80 code value (in HEX)
Table 20. Controls Identifier Table
Control Description Control Number
FWH Hub (for BIOS bank information) 0 0
FWH 0 Write Protect 1
FWH 1 Write Protect 2
FWH 0 Top Block Lock 3
FWH 1 Top Block Lock4 4