Intel Extensible Firmware Interface Specification page 321

ImageAddr
ImageSize
StringId
Type
Version 1.02
16-bit UNDI and 32/64-bit S/W UNDI:
contains the address of the first byte of the copy of the
Id
structure in the relocated UNDI code segment. See the Preboot
Execution Environment (PXE) Specification and Appendix G.
H/W UNDI:
contains the address of the
Id
Address of the un-relocated network interface image.
16-bit UNDI:
is the address of the PXE option ROM image in upper
ImageAddr
memory.
32/64-bit S/W UNDI:
is the address of the un-relocated S/W UNDI image.
ImageAddr
H/W UNDI:
contains zero.
ImageAddr
Size of un-relocated network interface image.
16-bit UNDI:
is the size of the PXE option ROM image in upper
ImageSize
memory.
32/64-bit S/W UNDI:
is the size of the un-relocated S/W UNDI image.
ImageSize
H/W UNDI:
contains zero.
ImageSize
A four-character ASCII string that is sent in the class identifier field of
option 60 in DHCP. For a
this field is "UNDI".
Network interface type. This will be set to one of the values in
EFI_NETWORK_INTERFACE_TYPE
12/12/00
SIMPLE_NETWORK Protocol
structure.
!PXE
of EfiNetworkInterfaceUndi,
Type
(See "Related Definitions").
!PXE
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