Tianocore/edk2.git/MdePkg/Include/Protocol/DevicePath.h, branch master

MdePkg: Replace include guards with #pragma once

2026-02-23T21:01:28+00:00

Replace traditional `#ifndef`/`#define`/`#endif` include guards with `#pragma` once. `#pragma once` is a widely supported preprocessor directive that prevents header files from being included multiple times. It is supported by all toolchains used to build edk2: GCC, Clang/LLVM, and MSVC. Compared to macro-based include guards, `#pragma once`: - Eliminates the risk of macro name collisions or copy/paste errors where two headers inadvertently use the same guard macro. - Eliminate inconsistency in the way include guard macros are named (e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.). - Reduces boilerplate (three lines replaced by one). - Avoids polluting the macro namespace with guard symbols. - Can improve build times as the preprocessor can skip re-opening the file entirely, rather than re-reading it to find the matching `#endif` ("multiple-include optimization"). - Note that some compilers may already optimize traditional include guards, by recognzining the idiomatic pattern. This change is made acknowledging that overall portability of the code will technically be reduced, as `#pragma once` is not part of the C/C++ standards. However, this is considered acceptable given: 1. edk2 already defines a subset of supported compilers in BaseTools/Conf/tools_def.template, all of which have supported `#pragma once` for over two decades. 2. There have been concerns raised to the project about inconsistent include guard naming and potential macro collisions. Approximate compiler support dates: - MSVC: Supported since Visual C++ 4.2 (1996) - GCC: Supported since 3.4 (2004) (http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html) - Clang (LLVM based): Since initial release in 2007 Signed-off-by: Michael Kubacki

MdePkg: Add definition for NVMe Over Fabric Device Path

2024-05-08T11:34:49+00:00

In accordance with UEFI 2.10 Specification: Adding definition for NVMe Over Fabric (NVMe-oF) Device Path of Messaging Sub-Type. Cc: Felix Polyudov Cc: Dhanaraj V Cc: Liming Gao Signed-off-by: Sachin Ganesh Reviewed-by: Liming Gao

MdePkg: Apply uncrustify changes

2021-12-07T17:24:28+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdePkg package Cc: Andrew Fish Cc: Leif Lindholm Cc: Michael D Kinney Signed-off-by: Michael Kubacki Reviewed-by: Liming Gao

MdePkg: add definitions for ACPI NVDIMM Device Path

2020-05-21T15:05:08+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2716 Add definitions for ACPI NVDIMM Device Path following UEFI spec. Cc: Michael D Kinney Cc: Liming Gao Signed-off-by: James Anandraj Reviewed-by: Liming Gao

MdePkg: Bootable NVDIMM namespaces

2020-05-15T05:05:52+00:00

Provided a mechanism for UEFI FW to identify and hand off bootable NVDIMM namespaces to the OS by standardizing the EFI device path. EFI device path for physical NVDIMM devices changed from an ACPI _ADR device to an ACPI NVDIMM device for correctness. (UEFI 2.8 mantis 1858) Signed-off-by: Oleksiy Yakovlev Reviewed-by: Liming Gao Reviewed-by: Zhiguang Liu

MdePkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:13+00:00

https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney Reviewed-by: Liming Gao

MdePkg: Clean up source files

2018-06-28T03:19:47+00:00

1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao

MdePkg/DevicePath.h: Add DNS Device Path definition

2017-08-14T05:17:43+00:00

This patch adds the DNS device path node definition. Cc: Ye Ting Cc: Fu Siyuan Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Wu Jiaxin Reviewed-by: Ye Ting

MdePkg/DevicePath: Add BluetoothLe device path node support

2017-06-07T00:46:20+00:00

Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni Reviewed-by: Hao A Wu

MdePkg Protocol/DevicePath.h: Update SATA Device Path comments

2016-05-12T06:17:46+00:00

The UEFI2.5 spec (Mantis ticket 1353 - https://mantis.uefi.org/mantis/view.php?id=1353) updated the Port Multiplier Port Number description of SATA device path to use 0xFFFF when the device is directly connected to the HBA. Please note that this is an incompatible semantic change. The consumer of SATA device path needs to re-examine its usage to follow UEFI 2.5 mantis 1353. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Hao Wu Reviewed-by: Feng Tian