Rationale

This is a toy project on how to build a Kernel to manage computing resources, not meant to be a full fledged production one. Also this one is to sharpen my C skillzz. There will be a Rust version of this.

Building and running

This is what you need in order to build and run this project:

• Qemu - Emulator for our Kernel.
• Nasm - Assembler to compile our .asm files.
• Gcc - The GNU Compiler Collection, to compile our .c files when we make the transition from Assembly to C.
• make - Automation tool to execute the compiling steps necessary to build the kernel.
• edk2-ovmf - OVMF shared libraries for executing UEFI applications in QEMU.
• cdrkit - Contains tool to create ISO files.

Using your favourite package manager, install these dependencies in order to get this thing running:

$ sudo pacman -S qemu nasm gcc make edk2-ovmf cdrkit

After that, clone the gnu-efi repository into the boot/gnu-efi folder and build its libraries.

$ git clone https://git.code.sf.net/p/gnu-efi/code boot/gnu-efi
$ make -C boot/gnu-efi

Using make, build the boot loader and kernel by running make and make run with sudo to execute the image in QEMU, because of the OVMF libraries being located in a folder owned by root:

$ make
$ sudo make run

This will generate the KalcOS.iso file in build/ directory, of which is the image to be ran on QEMU.

To see what's going to be developed, please refer to the TODO.md file in root directory folder or check the issues tab in GitHub repo.