Vol. 3A 9-49

PROCESSOR MANAGEMENT AND INITIALIZATION

Table 9-19.  Return Code Definitions

Return Code

Value

Description

SUCCESS

00H

The function completed successfully.

NOT_IMPLEMENTED

86H

The function is not implemented.

ERASE_FAILURE

90H

A failure because of the inability to erase the storage device.

WRITE_FAILURE

91H

A failure because of the inability to write the storage device.

READ_FAILURE

92H

A failure because of the inability to read the storage device.

STORAGE_FULL

93H

The BIOS non-volatile storage area is unable to accommodate the update 

because all available update blocks are filled with updates that are needed 

for processors in the system.

CPU_NOT_PRESENT

94H

The processor stepping does not currently exist in the system.

INVALID_HEADER

95H

The update header contains a header or loader version that is not 

recognized by the BIOS.

INVALID_HEADER_CS

96H

The update does not checksum correctly.

SECURITY_FAILURE

97H

The update was rejected by the processor.

INVALID_REVISION

98H

The same or more recent revision of the update exists in the storage device.

UPDATE_NUM_INVALID

99H

The update number exceeds the maximum number of update blocks 

implemented by the BIOS.

NOT_EMPTY

9AH

The specified update block is a subsequent block in use to store a valid 

microcode update that spans multiple blocks. 

The specified block is not a header block and is not empty.