Vendor Device Path; Memory Mapped Device Path; Vendor-Defined Device Path; Controller Device Path - Intel Extensible Firmware Interface Specification

Extensible Firmware Interface Specification

5.3.2.3 Memory Mapped Device Path

Table 5-5. Memory Mapped Device Path
Mnemonic
Type
Sub-Type
Length
Memory Type
Start Address
End Address

5.3.2.4 Vendor Device Path

The Vendor Device Path allows the creation of vendor-defined Device Paths. A vendor must
allocate a Vendor_GUID for a Device Path. The Vendor_GUID can then be used to define the
contents on the bytes that follow in the Vendor Device Path node.
n
Table 5-6.

Vendor-Defined Device Path

Mnemonic
Type
Sub-Type
Length
Vendor_GUID
Vendor Defined Data

5.3.2.5 Controller Device Path

Table 5-7. Controller Device Path
Mnemonic
Type
Sub-Type
Length
Controller Number
122
Byte Byte
Offset Length Description
0 1 Type 1 – Hardware Device Path
1 1 Sub-Type 3 – Memory Mapped
2 2 Length of this structure in bytes. Length is 24 bytes.
EFI_MEMORY_TYPE
4 4
8 8 Starting Memory Address
16 8 Ending Memory Address
Byte Byte
Offset Length Description
0 1 Type 1 – Hardware Device Path.
1 1 Sub-Type 4 – Vendor.
2 2 Length of this structure in bytes. Length is 20 + n bytes.
4 16 Vendor-assigned GUID that defines the data that follows.
20 n Vendor-defined variable size data.
Byte Byte
Offset Length Description
0 1 Type 1 – Hardware Device Path.
1 1 Sub-Type 5 – Controller.
2 2 Length of this structure in bytes. Length is 8 bytes.
4 4 Controller number.
12/12/00
(See Chapter 3.)
Version 1.02