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How to build OVMF
Building OVMF is fairly easy once you have installed a few pre-requisites. Please note, however, that building OVMF is not required if you are only interested in running OVMF, since we have provided pre-built binaries of OVMF.
- A edk2 build tree capable of building UEFI images
- If you are new to edk2 building then these getting started instructions may be helpful.
- An ASL compiler configured in your edk2 build tree
- Either the IASL compiler or the Microsoft ASL compiler can be used
- For Unix-like operating systems, IASL is the only option:
- For newer Linux distributions, you should be able to install iasl via the distribution's package management system. (This page may help.)
- Or, the Unix-like systems getting started guide includes details for installing IASL as well.
- For Windows, you can download pre-built version of IASL compiler from http://www.acpica.org.
- For Windows, you can also download a pre-built version of the Microsoft ASL compiler from http://www.acpi.info.
- For Unix-like operating systems, IASL is the only option:
- Either the IASL compiler or the Microsoft ASL compiler can be used
First decide which version of OVMF you will build. You can choose to build the IA32 processor architecture and/or the X64 processor architecture. You should take into account the processor architectures which your toolchain is capable of building. Depending upon which you select, you should modify the ACTIVE_PLATFORM and TARGET_ARCH in Conf/target.txt.
| ACTIVE_PLATFORM | TARGET_ARCH | PEI code | DXE/UEFI code |
|---|---|---|---|
| OvmfPkg/OvmfPkgIa32.dsc | IA32 | IA32 | IA32 |
| OvmfPkg/OvmfPkgIa32X64.dsc | IA32 X64 | IA32 | X64 |
| OvmfPkg/OvmfPkgX64.dsc | X64 | X64 | X64 |
Example: Conf/target.txt values to build x64 UEFI image for OVMF using GCC5 compiler:
ACTIVE_PLATFORM = OvmfPkg/OvmfPkgX64.dsc TARGET_ARCH = X64 TOOL_CHAIN_TAG = GCC5
Once you have modified Conf/target.txt, you can run the build command.
bash$ build
If successful, you should now have a OVMF.Fd file under the Build sub-directory. The exact directory under the Build directory will depend upon the toolchain, dsc and processor architecture.
You can use OVMF.Fd to run OVMF.