Repo to go along with the UEFI Development Series: https://www.youtube.com/playlist?list=PLT7NbkyNWaqZYHNLtOZ1MNxOt8myP5K0p
Most commits will roughly correspond to a given video in that playlist, once the videos are uploaded.
efi_c is the main directory; it should hold the lastest developments and is used for building
EFI applications and test kernels.
hello_efi is a directory for what was shown in the first UEFI intro/overview video. It has a
basic "hello world" test EFI application.
There may eventually be other examples, such as a load_kernel_efi directory with minimal code
needed to load a kernel and/or "install" the bootloader EFI application to a target machine.
-std=c17 or later, and ability to output PE32+ object files.
This repo assumes clang or x86_64-w64-mingw32-gcc (MinGW). Windows users can use the same MinGW gcc
compiler. Clang, through LLVM, supports other targets for cross compiling with -target, while gcc has
to use a different compiler for PE files.makeqemu with ovmf firmware (provided as bios64.bin in the "UEFI-GPT-image-creator" directory)git clone --recurse-submodules https://github.com/queso-fuego/uefi-dev or after cloning
use git submodule update --remote or git pull --recurse-submodules. cd uefi-dev/UEFI-GPT-image-creator/ && makecd ../efi_c/ && make (this should launch qemu automatically)Running/testing thereafter only needs make in the main efi_c directory, there's no need to make
the disk image creator program again. Unless you want to.
make in the efi_c directory to run using qemu/ovmf.dd to write the disk image to e.g. a USB drive.
Use lsblk or another way to find your USB's block device. An example using the default disk
image name and assuming /dev/sdB for a USB could be dd if=uefi-dev/UEFI-GPT-image-creator/test.hdd of=/dev/sdb bs=1M.
Note the 1 megabyte block size to reduce write time, and writing to the drive directly with sdb,
not using a partition e.g. sdb1.
On Windows, rufus works well to write raw image files directly to a USB drive:
https://rufus.ie