BD82QM67-SLJ4M Datasheet, PDF (835/934 Pages) Intel Corporation – Intel® 6 Series Chipset and Intel® 6 Series Chipset and

Serial Peripheral Interface (SPI)
21.2
Flash Descriptor Records
The following sections describe the data structure of the Flash Descriptor on the SPI
device. These are not registers within the PCH.
21.3
OEM Section
Memory Address: F00h
Default Value:
Size:
256 Bytes
256 Bytes are reserved at the top of the Flash Descriptor for use by the OEM. The
information stored by the OEM can only be written during the manufacturing process as
the Flash Descriptor read/write permissions must be set to Read Only when the
computer leaves the manufacturing floor. The PCH Flash controller does not read this
information. FFh is suggested to reduce programming time.
21.4
Note:
GbE SPI Flash Program Registers
The GbE Flash registers are memory-mapped with a base address MBARB found in the
GbE LAN register chapter Device 25: Function 0: Offset 14h. The individual registers
are then accessible at MBARB + Offset as indicated in the following table.
These memory mapped registers must be accessed in byte, word, or DWord quantities.
These register are only applicable when SPI flash is used in descriptor mode.
Table 21-2. Gigabit LAN SPI Flash Program Register Address Map
(GbE LAN Memory Mapped Configuration Registers) (Sheet 1 of 2)
MBARB +
Offset
00h–03h
Mnemonic
Register Name
GLFPR
Gigabit LAN Flash Primary Region
04h–05h
HSFS
Hardware Sequencing Flash Status
06h–07h
08h–0Bh
0Ch–0Fh
10h–13h
14h–4Fh
50h–53h
54h–57h
58h–5Bh
5Ch–5F
60h–63h
64h–73h
74h–77h
78h–7Bh
7Ch–8Fh
90h
HSFC
FADDR
—
FDATA0
—
FRAP
FREG0
FREG1
FREG2
FREG3
—
PR0
PR1
—
SSFS
Hardware Sequencing Flash Control
Flash Address
Reserved
Flash Data 0
Reserved
Flash Region Access Permissions
Flash Region 0
Flash Region 1
Flash Region 2
Flash Region 3
Reserved for Future Flash Regions
Flash Protected Range 0
Flash Protected Range 1
Reserved
Software Sequencing Flash Status
Default
Attribute
00000000h
0000h
0000h
00000000h
00000000h
00000000h
00000000h
00000000h
00000000h
00000000h
00000000h
00000000h
RO
RO, R/WC,
R/W
R/W, R/WS
R/W
R/W
RO, R/W
RO
RO
RO
RO
00000000h
00000000h
R/W
R/W
00h
RO, R/WC
Datasheet
835