This projects makes my dream come true - write my own operating system. I'm doing this mostly for fun, so don't expect a fully-fledged operating system on basis of the RISC-V architecture.
Exactly like SerenityOS this project doesn't use third-party runtime dependencies. If third-party dependencies are used, then only for the Build.
I started doing some coding videos on Youtube. Go and check it out if you want sysheap channel
Implemented
- Page allocator
- Heap allocator
- Interrupt handling (PLIC -> UART interrupts)
- Testing harness
- Executing in supervisor mode
- Userspace processes
- Scheduler
- Systemcalls
- Networkstack (udp)
- SMP
TODO
- VirtIO / Filesystem
- TCP
- Async Runtime in Kernel
- GUI
- See todo
This project contains a nix develop shell which includes all the tools to build the operating system.
# Install nix
sh <(curl -L https://nixos.org/nix/install) --daemon
# Enable nix-command and flakes
echo -e '\nexperimental-features = nix-command flakes\n' | sudo tee -a /etc/nix/nix.conf
# Restart nix daemon
sudo systemctl restart nix-daemon
# Install direnv
sudo apt install direnv
# Add direnv hook to your shell
# see https://direnv.net/docs/hook.html for other shells than bash
echo -e 'eval "$(direnv hook bash)"\n' >> ~/.bashrc
# Got to the SentienOS repository
direnv allow
# Re-enter the repository and all the dependencies should be pulled by nixTo run the operating system execute
just run
Type help into the shell to get some information. If you type the name of a program it get's executed. If you add an ampersand at the end of the command it get's executed in the background. See src/userspace/src/bin for programs which can be executed.
The justfile contains useful commands which I often use. To run them you first need to install just (just a command runner).
cargo install just. To get a list of all commands execute just -l.