MOROS: Obscure Rust Operating System

MOROS is a hobby operating system written in Rust by Vincent Ollivier.

It targets computers with a x86-64 architecture and a BIOS, so mostly from 2005 to 2020, but it also runs well on most emulators (Bochs, QEMU, and VirtualBox).

This project started from the seventh post of the second edition of Writing an OS in Rust by Philipp Oppermann and by reading the OSDev wiki along with many open source kernels.

Features

• [x] External bootloader (using bootloader)
• [x] x86 CPU support (using x86_64)
• [x] Hardware interrupts (using pic8259)
• [x] PS/2 Keyboard (using pc-keyboard)
• [x] VGA Text mode output
• [x] Serial output (using uart_16550)
• [x] Paging
• [x] Heap allocation (using linkedlistallocator)
• [x] ACPI shutdown (using acpi and aml)
• [x] RTC clock
• [x] PCI enumeration
• [x] ATA PIO mode
• [x] Random number generator (using rand_chacha)
• [x] RTL8139 network card
• [x] AMD PCNET network card
• [x] DHCP/IP/TCP/UDP/DNS/HTTP protocols (using smoltcp)
• [x] Basic filesystem
• [x] Basic shell
• [x] Basic text editor
• [x] Basic lisp interpreter
• [x] Basic file and network commands
• [x] Basic userspace for nasm binaries
• [ ] Multitasking

Setup

Install the required tools:

$ curl https://sh.rustup.rs -sSf | sh
$ rustup install nightly
$ rustup default nightly
$ rustup component add rust-src
$ rustup component add llvm-tools-preview
$ cargo install bootimage

Clone the repo:

$ git clone https://github.com/vinc/moros
$ cd moros

Usage

Build the image to disk.img:

$ make image output=video keyboard=qwerty nic=rtl8139

Run MOROS in QEMU:

$ make qemu output=video nic=rtl8139

Run natively on a x86 computer by copying the bootloader and the kernel to a hard drive or USB stick (but there is currently no USB driver so the filesystem will not be available):

$ sudo dd if=target/x86_64-moros/release/bootimage-moros.bin of=/dev/sdx && sync

In both cases, MOROS will open a console in diskless mode after boot if no filesystem is detected. The following command will setup the filesystem on the first hard drive of the first ATA bus, allowing you to exit the diskless mode and log in as a normal user:

> install

Be careful not to overwrite the hard drive of your OS when using dd inside your OS, and install or disk format inside MOROS.

Tests

Run the test suite in QEMU:

$ make test

LICENSE

MOROS is released under MIT.