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Bret Barkelew a860eb9668 CryptoPkg: Add missing instance for build only 4 days ago
ArmPkg ArmPkg/PlatformBootManagerLib: Use EDKII_SERIAL_PORT_LIB_VENDOR_GUID from MdeModulePkg 2 days ago
ArmPlatformPkg ArmPlatformPkg: Replace BSD License with BSD+Patent License 2 months ago
ArmVirtPkg ArmVirtPkg/PlatformBootManagerLib: Use EDKII_SERIAL_PORT_LIB_VENDOR_GUID 2 days ago
BaseTools BaseTools: add script to configure local git options 4 days ago
Conf BaseTools:Delete FrameworkDatabase from BaseTools/Conf 1 month ago
CryptoPkg CryptoPkg: Add missing instance for build only 2 days ago
DynamicTablesPkg DynamicTablesPkg: Disable deprecated APIs 5 days ago
EmbeddedPkg EmbeddedPkg/PrePiLib: remove dead status code reporting code 1 week ago
EmulatorPkg EmulatorPkg: Add NetworkPkg/NetworkPkg.dec as the package dependency 3 weeks ago
FatPkg FatPkg/FatPei: Remove BootInRecoveryMode PPI DEPEX. 1 month ago
FmpDevicePkg FmpDevicePkg: Add TimerLib to DSC file 1 week ago
IntelFrameworkModulePkg IntelFrameworkModulePkg/DebugLib: Fix string copy issue 3 weeks ago
IntelFrameworkPkg IntelFrameworkPkg: Replace BSD License with BSD+Patent License 2 months ago
IntelFsp2Pkg IntelFsp2Pkg/ Support rebasing 1.x binary. 5 days ago
IntelFsp2WrapperPkg IntelFsp2WrapperPkg/FspWrapperNotifyDxe: make global variable static 1 month ago
IntelSiliconPkg IntelSiliconPkg/IntelVTdDxe: Do global invalidation before boot 1 month ago
MdeModulePkg MdeModulePkg: Introduce EDKII_SERIAL_PORT_LIB_VENDOR_GUID 2 days ago
MdePkg MdePkg: Merge TianoCustomDecompress algorithm into 1 month ago
NetworkPkg NetworkPkg: Move Network library header file from MdeModulePkg to NetworkPkg 2 weeks ago
OvmfPkg OvmfPkg/Csm/LegacyBiosDxe: Fix Legacy16GetTableAddress call for E820 data 2 days ago
PcAtChipsetPkg PcAtChipsetPkg/ResetSystemLib: Add new API ResetSystem 1 month ago
SecurityPkg SecurityPkg/HddPassword: Add a PCD to skip Hdd password prompt 4 days ago
ShellPkg ShellPkg/Debug1CommandsLib: Fix bugs in func DisplaySysEventLogData 4 days ago
SignedCapsulePkg SignedCapsulePkg: Update Package DSC to remove unused network libs 2 weeks ago
SourceLevelDebugPkg SourceLevelDebugPkg: Replace BSD License with BSD+Patent License 2 months ago
StandaloneMmPkg StandaloneMmPkg: Replace BSD License with BSD+Patent License 2 months ago
UefiCpuPkg UefiCpuPkg RegisterCpuFeaturesLib.h: Fix typo 'STRICK' to 'STRIKE' 3 days ago
UefiPayloadPkg UefiPayloadPkg/PlatformBootManagerLib: Use EDKII_SERIAL_PORT_LIB_VENDOR_GUID from MdeModulePkg 2 days ago
.gitignore edk2: Add .DS_Store to .gitignore for macOS 2 years ago
.gitmodules ArmPkg: import Berkeley Softfloat library as git submodule 2 weeks ago
BuildNotes2.txt BaseTools: Various typo 4 months ago
License-History.txt edk2: Add License-History.txt 2 months ago
License.txt edk2: Change License.txt from 2-Clause BSD to BSD+Patent 2 months ago
Maintainers.txt Maintainers.txt: Add maintainer for CSM components in OvmfPkg 2 days ago edk2: Update additional licenses in 1 week ago
edksetup.bat edk2: Replace BSD License with BSD+Patent License 2 months ago Revert "BaseTools:code of test python module is moved to edksetup" 1 month ago

EDK II Project

A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from

The majority of the content in the EDK II open source project uses a BSD-2-Clause Plus Patent License. The EDK II open source project contains the following components that are covered by additional licenses:

The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.


Code Contributions

To make a contribution to a TianoCore project, follow these steps.

  1. Create a change description in the format specified below to use in the source control commit log.
  2. Your commit message must include your Signed-off-by signature
  3. Submit your code to the TianoCore project using the process that the project documents on its web page. If the process is not documented, then submit the code on development email list for the project.
  4. It is preferred that contributions are submitted using the same copyright license as the base project. When that is not possible, then contributions using the following licenses can be accepted:

For documentation:

Contributions of code put into the public domain can also be accepted.

Contributions using other licenses might be accepted, but further review will be required.

Developer Certificate of Origin

Your change description should use the standard format for a commit message, and must include your Signed-off-by signature.

In order to keep track of who did what, all patches contributed must include a statement that to the best of the contributor’s knowledge they have the right to contribute it under the specified license.

The test for this is as specified in the Developer’s Certificate of Origin (DCO) 1.1. The contributor certifies compliance by adding a line saying

Signed-off-by: Developer Name

where Developer Name is the contributor’s real name, and the email address is one the developer is reachable through at the time of contributing.

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

Sample Change Description / Commit Message

From: Contributor Name <>
Subject: [Repository/Branch PATCH] Pkg-Module: Brief-single-line-summary


Signed-off-by: Contributor Name <>

Notes for sample patch email

  • The first line of commit message is taken from the email’s subject line following [Repository/Branch PATCH]. The remaining portion of the commit message is the email’s content.
  • git format-patch is one way to create this format

Definitions for sample patch email

  • Repository is the identifier of the repository the patch applies. This identifier should only be provided for repositories other than edk2. For example edk2-BuildSpecification or staging.
  • Branch is the identifier of the branch the patch applies. This identifier should only be provided for branches other than edk2/master. For example edk2/UDK2015, edk2-BuildSpecification/release/1.27, or staging/edk2-test.
  • Module is a short identifier for the affected code or documentation. For example MdePkg, MdeModulePkg/UsbBusDxe, Introduction, or EDK II INF File Format.
  • Brief-single-line-summary is a short summary of the change.
  • The entire first line should be less than ~70 characters.
  • Full-commit-message a verbose multiple line comment describing the change. Each line should be less than ~70 characters.
  • Signed-off-by is the contributor’s signature identifying them by their real/legal name and their email address.