MierOS

About

MierOS is a hobby operating system that I develop in my free time and when I'm bored.

My goal is to develop a system which can run simple graphical games like Solitaire and perhaps more complex stuff further down the road.

Features

Currently there are not many features implemented, but some of the bigger ones are:

• AHCI driver
• Ext2 filesystem (read only)
• Simple task scheduler

Building

1. Building the toolchain

   In order to build the toolchain you will need to run scripts/setupToolchain.sh. This script will download all the required packages, build the GNU C/C++ compiler and Binutils, Limine bootloader and a utility program to export kernel symbols for debugging.

2. Creating the disk image

   In order to create a disk image you need to run scripts/create_hdd.sh build/hdd.img. This script will create a raw hard drive image that will be used for storing and booting the OS. It automatically formats the drive and creates a partition with a fixed UUID to make development easier.

3. Building the kernel

   To build the kernel you first need to run cmake -S . -B build to generate the cmake directory. After that you can run cmake --build build to build the kernel, modules and all the other things.

4. Running the OS

   There are 2 ways to launch the system. You can use Visual Studio Code launch target or you can run scripts/run.sh. If you are not using GDB you can remove the -S argument to not stop QEMU at launch.