LittleOS

LittleOS is a monolithic operating system for the Raspberry Pi 3A+ board.

Running

As long as you have installed Rust via rustup, cargo will take care of downloading the correct toolchain (I have used aarch64-unknown-none-softfloat target). In addition, you need to install cargo-binutils to access rust-objcopy. Finally, to run the kernel, you need to have QEMU.

If you have all that, you can simply run make.

Features

• PL011 driver
• Bitmap allocator
• Buddy allocator
• Slab allocator
• EL1 execution
• Spinlock
• Mailbox driver
• Framebuffer driver
• PC screen font support
• Fork