Data Sheet

Ethernet Controller I210 —Flash Map
232
6.7.9.1.2 Block CRC8 (Offset 0x1)
6.7.9.1.3 SVR/LVR Control Register Address - (Offset 2*n; [n = 1... Section Length])
6.7.9.1.4 SVR/LVR Control Data (Offset 2*n + 1; [n = 1... Section Length])
6.8 Software Accessed Words
Words 0x03 to 0x07 in the Flash image are reserved for compatibility information. New bits within
these fields are defined as the need arises for determining software compatibility between various
hardware revisions.
Words 0x8 and 0x09 are used to indicate the Printed Board Assembly (PBA) number and words 0x42
and 0x43 identifies the Flash iNVM image.
Words 0x30 to 0x3E have been reserved for configuration and version values to be used by PXE code.
The only exceptions are words 0x36 and 0x3D, which are used for the iSCSI boot configuration and
word 0x37 which is used as a pointer to the Alternate MAC address.
6.8.1 Compatibility (Word 0x03)
Bit Name Description
15:8 Reserved
7:0 CRC8
CRC8 is computed over the module, header excluded (for example, starting
from word offset 0x2 included).
Bits
Name
Default HW
Mode
Description
15:5 Reserved 0x0 Reserved
4:0
SVR/LVR Control Register
Address
SVR/LVR Control register address to which the data is written.
Bits
Name
Default HW
Mode
Description
15:0 Reg_Data
SVR/LVR Control register data.
Bit Description
15:13 Reserved (set to 000b).
12
IT part - Bit is set to 1b on Industrial Temperature SKU.
11
This bit indicates whether the NVM attached to the LAN silicon contains a dedicated area for storing Option ROM
firmware (sometimes also called a "Boot ROM"). This bit is used by Option ROM software update utilities and
other applications to decide whether or not to allow updating the Option ROM firmware as well as whether or not
to allow enabling/disabling the Option ROM by means of the PCI Expansion ROM Base Address Register (BAR).
0b = NIC (Attached Flash has an area for storing Option ROM firmware).
1b = LOM (Attached Flash does not have an area for storing Option ROM firmware).