Here's a complete tutorial for Linux Ubuntu 20. It worked perfectly on my side.
Setting up EDK2
Here are the steps I've taken to get EDK2 working on Linux Ubuntu 20:
sudo apt-get install build-essential git uuid-dev iasl nasm python python3-distutils python3-apt
git clone https://github.com/tianocore/edk2.git
Download brotli from here https://github.com/tianocore/edk2/releases/tag/edk2-stable202011 (the third file)
Install it in ~/edk2/BaseTools/Source/C/BrotliCompress/brotli
cd edk2
make -C BaseTools
Run ". edksetup.sh" (including the dot)
Open Conf/target.txt in a text editor change ACTIVE_PLATFORM to MdeModulePkg/MdeModulePkg.dsc
TOOL_CHAIN_TAG to GCC5 and TARGET_ARCH to X64
Download oniguruma from here https://github.com/kkos/oniguruma/tree/abfc8ff81df4067f309032467785e06975678f0d
Copy brotli to ~/edk2/MdeModulePkg/Library/BrotliCustomDecompressLib/brotli
and oniguruma to ~/edk2/MdeModulePkg/Universal/RegularExpressionDxe/oniguruma
build
If you ever close the bash terminal at any step just rerun ". edksetup.sh" because then you can't run build command.
Compiling your own efi app
The above will simply show you a bit of how this works in general. Once all this works, you want to compile your own Hello World example like the one below.
#include <Uefi.h>
EFI_STATUS EFIAPI UefiMain (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable){
SystemTable->ConOut->OutputString(SystemTable->ConOut, L"Hello World\n");
return EFI_SUCCESS;
}
In order to do this, you need to take several more steps.
Create a working directory in the edk2 directory like ~edk2/BootloaderPkg. In there, place 2 files one named Bootloader.c and one named Bootloader.inf.
In Bootloader.c place the code above. In Bootloader.inf place the following
[Defines]
INF_VERSION = 1.25
BASE_NAME = Bootloader
FILE_GUID = 66949615-9653-4a86-8c61-6ef0952973b9
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 1.0
ENTRY_POINT = UefiMain
[Sources]
Bootloader.c
[Packages]
MdePkg/MdePkg.dec
[LibraryClasses]
UefiApplicationEntryPoint
UefiLib
[Guids]
[Ppis]
[Protocols]
[FeaturePcd]
[Pcd]
- As stated on https://github.com/tianocore/tianocore.github.io/wiki/Getting-Started-Writing-Simple-Application,
Update an existing platform .DSC file with your project .inf file. The following list some examples.
So what I did is I took the .DSC file from the MdeModulePackage and I modified it a bit with the following content:
[Defines]
PLATFORM_NAME = MdeModule
PLATFORM_GUID = 587CE499-6CBE-43cd-94E2-186218569478
PLATFORM_VERSION = 0.98
DSC_SPECIFICATION = 0x00010005
OUTPUT_DIRECTORY = BootloaderPkg/Build
SUPPORTED_ARCHITECTURES = IA32|X64|EBC|ARM|AARCH64|RISCV64
BUILD_TARGETS = DEBUG|RELEASE|NOOPT
SKUID_IDENTIFIER = DEFAULT
[LibraryClasses]
#
# Entry point
#
PeiCoreEntryPoint|MdePkg/Library/PeiCoreEntryPoint/PeiCoreEntryPoint.inf
PeimEntryPoint|MdePkg/Library/PeimEntryPoint/PeimEntryPoint.inf
DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
UefiApplicationEntryPoint|MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf
#
# Basic
#
BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
SynchronizationLib|MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
PciLib|MdePkg/Library/BasePciLibCf8/BasePciLibCf8.inf
PciCf8Lib|MdePkg/Library/BasePciCf8Lib/BasePciCf8Lib.inf
PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibPci.inf
CacheMaintenanceLib|MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
SortLib|MdeModulePkg/Library/BaseSortLib/BaseSortLib.inf
#
# UEFI & PI
#
UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf
UefiRuntimeLib|MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
UefiHiiServicesLib|MdeModulePkg/Library/UefiHiiServicesLib/UefiHiiServicesLib.inf
HiiLib|MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
UefiDecompressLib|MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.inf
PeiServicesTablePointerLib|MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
PeiServicesLib|MdePkg/Library/PeiServicesLib/PeiServicesLib.inf
DxeServicesLib|MdePkg/Library/DxeServicesLib/DxeServicesLib.inf
DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
UefiBootManagerLib|MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
VariablePolicyLib|MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.inf
#
# Generic Modules
#
UefiUsbLib|MdePkg/Library/UefiUsbLib/UefiUsbLib.inf
UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
SecurityManagementLib|MdeModulePkg/Library/DxeSecurityManagementLib/DxeSecurityManagementLib.inf
TimerLib|MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate.inf
SerialPortLib|MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf
CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
CustomizedDisplayLib|MdeModulePkg/Library/CustomizedDisplayLib/CustomizedDisplayLib.inf
FrameBufferBltLib|MdeModulePkg/Library/FrameBufferBltLib/FrameBufferBltLib.inf
#
# Misc
#
DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
ReportStatusCodeLib|MdePkg/Library/BaseReportStatusCodeLibNull/BaseReportStatusCodeLibNull.inf
PeCoffExtraActionLib|MdePkg/Library/BasePeCoffExtraActionLibNull/BasePeCoffExtraActionLibNull.inf
PerformanceLib|MdePkg/Library/BasePerformanceLibNull/BasePerformanceLibNull.inf
DebugAgentLib|MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.inf
PlatformHookLib|MdeModulePkg/Library/BasePlatformHookLibNull/BasePlatformHookLibNull.inf
ResetSystemLib|MdeModulePkg/Library/BaseResetSystemLibNull/BaseResetSystemLibNull.inf
SmbusLib|MdePkg/Library/DxeSmbusLib/DxeSmbusLib.inf
S3BootScriptLib|MdeModulePkg/Library/PiDxeS3BootScriptLib/DxeS3BootScriptLib.inf
CpuExceptionHandlerLib|MdeModulePkg/Library/CpuExceptionHandlerLibNull/CpuExceptionHandlerLibNull.inf
PlatformBootManagerLib|MdeModulePkg/Library/PlatformBootManagerLibNull/PlatformBootManagerLibNull.inf
PciHostBridgeLib|MdeModulePkg/Library/PciHostBridgeLibNull/PciHostBridgeLibNull.inf
TpmMeasurementLib|MdeModulePkg/Library/TpmMeasurementLibNull/TpmMeasurementLibNull.inf
AuthVariableLib|MdeModulePkg/Library/AuthVariableLibNull/AuthVariableLibNull.inf
VarCheckLib|MdeModulePkg/Library/VarCheckLib/VarCheckLib.inf
FileExplorerLib|MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
NonDiscoverableDeviceRegistrationLib|MdeModulePkg/Library/NonDiscoverableDeviceRegistrationLib/NonDiscoverableDeviceRegistrationLib.inf
FmpAuthenticationLib|MdeModulePkg/Library/FmpAuthenticationLibNull/FmpAuthenticationLibNull.inf
CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
BmpSupportLib|MdeModulePkg/Library/BaseBmpSupportLib/BaseBmpSupportLib.inf
SafeIntLib|MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
DisplayUpdateProgressLib|MdeModulePkg/Library/DisplayUpdateProgressLibGraphics/DisplayUpdateProgressLibGraphics.inf
VariablePolicyHelperLib|MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.inf
[LibraryClasses.EBC.PEIM]
IoLib|MdePkg/Library/PeiIoLibCpuIo/PeiIoLibCpuIo.inf
[LibraryClasses.common.PEI_CORE]
HobLib|MdePkg/Library/PeiHobLib/PeiHobLib.inf
MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
[LibraryClasses.common.PEIM]
HobLib|MdePkg/Library/PeiHobLib/PeiHobLib.inf
MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
ExtractGuidedSectionLib|MdePkg/Library/PeiExtractGuidedSectionLib/PeiExtractGuidedSectionLib.inf
LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.inf
[LibraryClasses.common.DXE_CORE]
HobLib|MdePkg/Library/DxeCoreHobLib/DxeCoreHobLib.inf
MemoryAllocationLib|MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllocationLib.inf
ExtractGuidedSectionLib|MdePkg/Library/DxeExtractGuidedSectionLib/DxeExtractGuidedSectionLib.inf
[LibraryClasses.common.DXE_DRIVER]
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
ExtractGuidedSectionLib|MdePkg/Library/DxeExtractGuidedSectionLib/DxeExtractGuidedSectionLib.inf
CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleLib.inf
[LibraryClasses.common.DXE_RUNTIME_DRIVER]
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
DebugLib|MdePkg/Library/UefiDebugLibConOut/UefiDebugLibConOut.inf
LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibFmp/DxeRuntimeCapsuleLib.inf
VariablePolicyLib|MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLibRuntimeDxe.inf
[LibraryClasses.common.SMM_CORE]
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
MemoryAllocationLib|MdeModulePkg/Library/PiSmmCoreMemoryAllocationLib/PiSmmCoreMemoryAllocationLib.inf
SmmServicesTableLib|MdeModulePkg/Library/PiSmmCoreSmmServicesTableLib/PiSmmCoreSmmServicesTableLib.inf
SmmCorePlatformHookLib|MdeModulePkg/Library/SmmCorePlatformHookLibNull/SmmCorePlatformHookLibNull.inf
SmmMemLib|MdePkg/Library/SmmMemLib/SmmMemLib.inf
[LibraryClasses.common.DXE_SMM_DRIVER]
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
MemoryAllocationLib|MdePkg/Library/SmmMemoryAllocationLib/SmmMemoryAllocationLib.inf
MmServicesTableLib|MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf
SmmServicesTableLib|MdePkg/Library/SmmServicesTableLib/SmmServicesTableLib.inf
LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.inf
SmmMemLib|MdePkg/Library/SmmMemLib/SmmMemLib.inf
[LibraryClasses.common.UEFI_DRIVER]
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
DebugLib|MdePkg/Library/UefiDebugLibConOut/UefiDebugLibConOut.inf
LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
[LibraryClasses.common.UEFI_APPLICATION]
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
DebugLib|MdePkg/Library/UefiDebugLibStdErr/UefiDebugLibStdErr.inf
FileHandleLib|MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf
[LibraryClasses.common.MM_STANDALONE]
HobLib|MdeModulePkg/Library/BaseHobLibNull/BaseHobLibNull.inf
MemoryAllocationLib|MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf
StandaloneMmDriverEntryPoint|MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEntryPoint.inf
MmServicesTableLib|MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf
LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxStandaloneMmLib.inf
MemLib|StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf
NULL|MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf
[Components]
BootloaderPkg/Bootloader.inf
[BuildOptions]
Place that content into a file named BootloaderPkg.dsc and place it into your working directory.
Change the ACTIVE_PLATFORM line in your Conf/target.txt file to ACTIVE_PLATFORM = BootloaderPkg/BootloaderPkg.dsc
.
Once this is done, you are ready to compile your own EFI application. Open a terminal and type the following commands:
cd edk2
. edksetup.sh
build
Now you should have in the ~/edk2/BootloaderPkg/Build directory all kind of files including Bootloader.efi which is the compiled EFI application.
Testing the EFI application
It is nice to have an EFI app now you would like to test it. Write a bash script and type the following commands into it (taken here https://wiki.osdev.org/UEFI)
dd if=/dev/zero of=edk2/BootloaderPkg/disk.img bs=512 count=93750
gdisk edk2/BootloaderPkg/disk.img #o n ef00 w
sudo losetup --offset 1048576 --sizelimit 46934528 /dev/loop7 edk2/BootloaderPkg/disk.img
sudo mkdosfs -F 32 /dev/loop7
sudo mount /dev/loop7 /mnt
sudo cp edk2/BootloaderPkg/Build/DEBUG_GCC5/X64/Bootloader.efi /mnt
sudo umount /mnt
sudo losetup -d /dev/loop7
Place that script into your home directory and launch the script. You will be prompted to enter stuff. Type in order o, y, n, enter, enter, enter, ef00, w and then y. This will get you to have a disk.img partioned with FAT32 and with the file Bootloader.efi on it (the EFI app).
Once this is done you need to download OVMF and qemu so type
sudo apt install ovmf qemu qemu-system-x86
Once this is done type the following command to launch the EFI shell in QEMU and test your EFI app.
sudo qemu-system-x86_64 -cpu qemu64 -drive if=pflash,format=raw,unit=0,file=/usr/share/OVMF/OVMF_CODE.fd,readonly=on -drive if=pflash,format=raw,unit=1,file=/usr/share/OVMF/OVMF_VARS.fd -drive format=raw,file=edk2/BootloaderPkg/disk.img,if=virtio
You should see a UEFI shell appear after a few seconds. Then type fs0:
and then Bootloader.efi
. This will change directory and then launch your EFI app.