ValeOS

Custom OS and bootloader. Initially intended for use with a custom PDA.

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Why am I making an operating system?

Why not? There was not really any reason, except someone told me I should make my own OS. And so I did.

Overview

This repository contains (or will contain) an entire operating system complete with a bootloader. Written in Assembly and C, this is a project built from boredom and procrastination (I should've focused on my studies). No standard C libraries are or will be used, everything will be self written. The source code for this OS is not based on Linux. The roadmap is as follows :

• Bootloader
  • and whatever this thing does, as long as it boots without being unstable I'm happy.
  • UEFI support
  • some way to self sign the kernel and bootloader for Secure Boot
• Kernel
  • Text interface
  • Numerical printing
  • Error logging
  • Error/Interrupt handling
  • Serial IO
  • Memory management
    • Paging, might try to make my owwn paging algorithm
    • Memory map
    • Malloc/Free
  • File IO
  • GUI
  • Wireless
• "Operating System", the stuff 'normal' people will actually see
  • DE + WM, can be toggled or used as a hybrid
    • allow custom css/styling
    • keyboard shortcuts for the keyboard warriors
    • can be fully turned off for a text only session.
  • File system
    • Possibly might just use btrFS and write my own drivers, if not :
    • Basic interface (open, read, write, close, etc)
    • Permission system, more like UNIX (eg. 9-bit perms : rwxr-x--x, etc)
    • Try to make my own block algorithm
    • Add support for common FS, like FAT, ext4 and NTFS
  • Extensive user customisation
  • Video and Audio support
  • Package manager, both CLI and GUI
  • Custom highlevel language
    • Probably just a spin on Python
  • Some basic starter apps
    • terminal & shell
    • text editor (tui & gui)
    • music player
    • image and video viewer
    • basic web browser (really basic)
    • file explorer
    • any other things I may come up with
  • Doom (very important for any Operating System)

I might choose to seperate these into different repositories. Such as :

• Boot loader + Kernel + Libraries, the bare things needed : This Repo
• Filesystem (if I decide to make my own)
• Desktop Environment + Window Manager
• Apps (although I may just leave them in this repo, if theyre not too big)
• Package manager
• Doom (again, very important, it needs its own repo)

Building

1. Download this repo and unzip the file
2. Navigate into the repo, you should be in the same directory as the Makefile
3. Open terminal and enter make
4. You should have a binary called 'os-image.bin' inside the 'bin' folder. You can run it using QEMU using qemu-system-i386 -drive format=raw,file=bin/os-image.bin,index=0,if=floppy In the future, I will test flashing a USB with the image and launching it from a computer.