Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
specific and each structure entry describes the NVDIMM supported by the structure through
NFIT Device Handle.
Figure 5-30 illustrates the above structures and how they are associated with each other.
ACPI NVM
Root
Device
(in ACPI name
space)
SMBIOS
Management
Information
Structure(s)
SPA Range
Structure(s)
SPA Range Structure Index
Implicit
Association
Memory Device to
System Address Range
Map Structure(s)
NVDIMM
Firmware
Interface Table
(NFIT)
Interleave
Structure(s)
Interleave Structure
Index
NFIT Device Handle
NVDIMM Block Data
Window Region
Structure(s)
NVDIMM Control
Region Structure(s)
Flush Hint
Address
Structure(s)
NVDIMM
Control Region
Structure Index
NVDIMM Control Region
Structure Index
Figure 5-30 NVDIMM Firmware Interface Table Overview
Table 5-126 provides a table of the NVDIMM firmware interface.
Table 5-126 NVDIMM Firmware Interface Table
Field Byte Length Byte Offset Description
Header
Signature 4 0 ‘NFIT’ is Signature for this table
Length 4 4 Length in bytes for entire table.
Revision 1 8 1
Checksum 1 9 Entire table must sum to zero
OEMID 6 10 OEM ID
OEM Table ID 8 16 The table ID is the manufacturer model
ID
OEM Revision 4 24 OEM revision of table for supplied OEM
Table ID
Creator ID 4 28 Vendor ID of utility that created the table
Creator Revision 4 32 Revision of utility that created the table
Reserved 4 36
202 April, 2015 Version 6.0