GitHub - sermuns/ratatuefi: Zero-bloat Ratatui apps in UEFI · GitHub
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Zero-bloat Ratatui in UEFI, no OS
qemu-demo.mp4
physical-demo.mp4
Running in QEMU
Install packages:
pacman -S qemu-system-x86_64 edk2-ovmf
(optionally, install some graphics backend, but you can also VNC into the VM)
pacman -S qemu-ui-sdl
Create virtual EFI layout
just create-virtual-uefi-layout
then build and symlink the .efi in:
( is something like ./target/x86_64-unknown-uefi/debug/.efi)
esp/efi/boot/bootx64.efi">ln -sf EFI> esp/efi/boot/bootx64.efi
Start QEMU
just qemu
Running on a physical machine
from https://rust-osdev.github.io/uefi-rs/tutorial/hardware.html
Connect a USB drive. Follow steps below.
# Create the GPT, create a 9MB partition starting at 1MB, and set the<br># partition type to EFI System.<br>sgdisk \<br>--clear \<br>--new=1:1M:10M \<br>--typecode=1:C12A7328-F81F-11D2-BA4B-00A0C93EC93B \<br>/path/to/disk
# Format the partition as FAT.<br>mkfs.fat /path/to/disk_partition
# Mount the partition.<br>mount --mkdir /path/to/disk_partition /mnt/ratatuefi
# Create the boot directory.<br>mkdir -p /mnt/ratatuefi/EFI/BOOT
# Copy in the boot executable.<br>cp $CARGO_TARGET_DIR/x86_64-unknown-uefi/debug/ratatuefi.efi /mnt/ratatuefi/EFI/BOOT/BOOTX64.EFI
# Eject the USB drive<br>eject /path/to/disk
Important<br>disable secure boot on machine before trying to boot
try booting it!
Ideas for improving
it is slow as hell to draw. could possibly be improved by
adding a buffer, and rendering full lines? currently we are rawdoggin character-for-character.
switching to manual VGA graphics (use mousefood?)
was fixed by using -display sdl,gl=on!<br>somehow running without OpenGL makes it really slow!
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Zero-bloat Ratatui apps in UEFI
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