82598EB Datasheet, PDF (167/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Hardware EEPROM Sections
3.4.3.1.1 EEPROM Control Word 1 – Address 0x00
Bits
15:12
11:8
Name
Reserved
EEPROM Size
7:6
Signature
5
MNG Enable
4
EEPROM Protection
3:0
HEPSize
Default
0000b
0010b
01b
0b
0b
0000b
Description
Reserved.
These bits indicate the EEPROM’s actual size.
Mapped to EEC[14:11].
Supported values:
0000b = Reserved.
0001b = 256 bytes.
0010b = 512 bytes.
0011b = 1 kB.
0100b = 2 kB.
0101b = 4 kB.
0110b = 8 kB.
0111b = 16 kB.
1000b = 32 kB.
1001b: 1111b = Reserved.
The Signature field indicates to the 82598 that there is a valid
EEPROM present. If the Signature field is not 01b, the other bits
in this word are ignored, no further EEPROM read is performed,
and the default values are used for the configuration space IDs.
Manageability Enable
When set, indicates that the manageability block is enabled.
When cleared, the manageability block is disabled (clock gated).
Mapped to GRC.MNG_EN.
If set to 1b, all EEPROM protection schemes are enabled.
Hidden EEPROM Block Size
This field defines the EEPROM area accessible only by
manageability firmware. It can also be used to store secured data
and other manageability functions. The size in bytes of the
secured area equals:
0 bytes (if HEPSize equals zero), or 2^ HEPSize bytes (2 bytes, 4
bytes, …32 kB.)
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