31:6

0h

RO

Reserved

5

0h

RO/V

Memory Configuration Done Acknowledgement (MEM_​CONFIG_​DONE_​ACK)

Mem Config Done Ack from MemSS PMA to MRC.

4

0h

RW

Memory Configuration Done (MEM_​CONFIG_​DONE)

BIOS sets the bit to indicate that all the memory configuration is complet to MemSS PMA.

3

0h

RW/V

MRC GV3 Save Request (MRC_​SAVE3)

MRC requests to save GV3 by setting the bit. MemSS PMA acknowledges by clearing the bit after save operation is complete.

2

0h

RW/V

MRC GV2 Save Request (MRC_​SAVE2)

MRC requests to save GV2 by setting the bit. MemSS PMA acknowledges by clearing the bit after save operation is complete.

1

0h

RW/V

MRC GV1 Save Request (MRC_​SAVE1)

MRC requests to save GV1 by setting the bit. MemSS PMA acknowledges by clearing the bit after save operation is complete.

0

0h

RW/V

MRC GV0 Save Request (MRC_​SAVE0)

MRC requests to save GV0 by setting the bit. MemSS PMA acknowledges by clearing the bit after save operation is complete.