Intel Extensible Firmware Interface - Manual (Page 919)

32/64-Bit UNDI Specification
Version 1.10 12/01/02 E-53
E.4.6 Get Config Info
This command is used to retrieve configuration information about the NIC being controlled by
the UNDI.
E.4.6.1 Issuing the Command
To issue a Get Config Info command, create a CDB and fill it in as shown in the table below:
CDB Field How to initialize the CDB structure for a Get Config Info command
OpCode PXE_OPCODE_GET_CONFIG_INFO
OpFlags PXE_OPFLAGS_NOT_USED
CPBsize PXE_CPBSIZE_NOT_USED
DBsize sizeof(PXE_DB_CONFIG_INFO)
CPBaddr PXE_CPBADDR_NOT_USED
DBaddr Address of a PXE_DB_CONFIG_INFO structure
StatCode PXE_STATCODE_INITIALIZE
StatFlags PXE_STATFLAGS_INITIALIZE
IFnum A valid interface number from zero to !PXE.IFcnt
Control Set as needed
E.4.6.2 Waiting for the Command to Execute
Monitor the upper two bits (14 & 15) in the CDB.StatFlags field. Until these bits change to
report PXE_STATFLAGS_COMMAND_COMPLETE or PXE_STATFLAGS_COMMAND_FAILED ,
the command has not been executed by the UNDI.
StatFlags Reason
COMMAND_COMPLETE Command completed successfully. DB has been written.
COMMAND_FAILED Command failed. StatCode field contains error code.
COMMAND_QUEUED Command has been queued.
INITIALIZE Command has been not executed or queued.