Extensible Firmware Interface Specification
128 12/12/00 Version 1.02
5.3.4.11 InfiniBand† Device Path

Table 5-19. InfiniBand† Device Path

Mnemonic
Byte
Offset
Byte
Length Description
Type 0 1 Type 3 – Messaging Device Path
Sub-Type 1 1 Sub-Type 9 – InfiniBand†
Length 2 2 Length of this structure in bytes
Reserved 4 4 Reserved
Node GUID18 8 64 bit node GUID1 of the IOU
IOC GUID116 8 64 bit GUID1 of the IOC
Device ID 24 8 64 bit persistent ID of the device
1The usage of the term GUID is per the Infiniband specification. This is not the same as the

EFI_GUID type defined in the EFI Specification.

5.3.4.12 UART Device Path

Table 5-20. UART Device Path

Mnemonic
Byte
Offset
Byte
Length Description
Type 0 1 Type 3 – Messaging Device Path
Sub-Type 1 1 Sub-Type 14 – UART
Length 2 2 Length of this structure in bytes. Length is 19 bytes.
Reserved 4 4 Reserved
Baud Rate 8 8 The baud rate setting for the UART style device. A value of
0 means that the device's default baud rate will be used.
Data Bits 16 1 The number of data bits for the UART style device. A value
of 0 means that the device's default number of data bits will
be used.
Parity 17 1 The parity setting for the UART style device.
Parity 0x00 - Default Parity
Parity 0x01 - No Parity
Parity 0x02 - Even Parity
Parity 0x03 - Odd Parity
Parity 0x04 - Mark Parity
Parity 0x05 - Space Parity
Stop Bits 18 1 The number of stop bits for the UART style device.
Stop Bits 0x00 - Default Stop Bits
Stop Bits 0x01 - 1 Stop Bit
Stop Bits 0x02 - 1.5 Stop Bits
Stop Bits 0x03 - 2 Stop Bits