G.4.15 Nvdata - Intel Extensible Firmware Interface Specification

G.4.14.2 Waiting for the Command to Execute
Monitor the upper two bits (14 & 15) in the
report
PXE_STATFLAGS_COMMAND_COMPLETE
the command has not been executed by the UNDI.
StatFlags
COMMAND_COMPLETE
COMMAND_FAILED
COMMAND_QUEUED
INITIALIZE
G.4.14.3 Checking Command Execution Results
After command execution completes, either successfully or not, the
contains the result of the command execution.
StatCode
SUCCESS
INVALID_CDB
INVALID_CPB
BUSY
QUEUE_FULL
NOT_STARTED
NOT_INITIALIZED
Before Using the DB
The DB is where the multicast MAC addresses will be written.
typedef struct s_pxe_db_mcast_ip_to_mac {
// Multicast MAC address.
PXE_MAC_ADDR MAC[n];
} PXE_DB_MCAST_IP_TO_MAC;
G.4.15 NvData
This command is used to read and write (if supported by NIC H/W) non-volatile storage on the
NIC. Non-volatile storage could be EEPROM, FLASH or battery backed RAM.
Version 1.02
CDB.StatFlags
or PXE_STATFLAGS_COMMAND_FAILED,
Reason
Command completed successfully. DB is written.
Command failed. StatCode field contains error code.
Command has been queued.
Command has been not executed or queued.
Reason
Command completed successfully. DB is written.
One of the CDB fields was not set correctly.
One of the CPB fields was not set correctly.
UNDI is already processing commands. Try again later.
Command queue is full. Try again later.
The UNDI is not started.
The UNDI is not initialized.
12/12/00
32/64-bit UNDI Specification
field. Until these bits change to
field
CDB.StatCode
449