Intel Extensible Firmware Interface, Specification

Page: 450 / 494

Extensible Firmware Interface Specification
432 12/12/00 Version 1.02
// The following configuration parameters are optional and must
// be zero to use the default values.
PXE_UINT8 Duplex;
PXE_UINT8 LoopBack;
} PXE_CPB_INITIALIZE;
#pragma pack()
#define PXE_DUPLEX_DEFAULT 0x00
#define PXE_FORCE_FULL_DUPLEX 0x01
#define PXE_ENABLE_FULL_DUPLEX 0x02
#define LOOPBACK_NORMAL 0
#define LOOPBACK_INTERNAL 1
#define LOOPBACK_EXTERNAL 2
G.4.7.2 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. UNDI and network device is now
initialized. 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.