Tao OS

A hobbyist x86_64 operating system written in Rust. This OS is a personal project to learn about OS development. This OS is WIP, but the end goal is to have a working wm, with some basic user programs and kernel drivers. From this point, this OS can be used to experiment with unique OS implementation ideas.

Building Tao OS ISO file

Requirements:

• Rust
• nasm
• grub

Building

Release: make all Debug: DEBUG=1 make all Testing: TESTS=1 make all

Running with QEMU

After building the ISO file, run qemu-system-x86_64 -cdrom ./build/tao-os.iso

Features

• Printing with VGA Text Mode
• Memory Allocation with First Fit Algorithm
• Interrupts
• Basic Paging
• ATA PIO Hard Disk Reading
• FAT16 Reading

TODO:

Core Features

• Keyboard driver
• Interrupt-Driven Async
• Processes/Multitasking
• Elf loader/User Programs
• Testing
• Mouse driver
• network driver
• sound driver
• graphics
• Processes/Tasks (User Programs)
• DMA driver
• RamFS
• PCI Scan

Cleanup/Improvements

• Replace First Fit with Slab Allocation algorithm
• Clear the neverending backlog of TODO comments and unimplemented!() macros
• Paging improvements
• Swap implementation
• Fat16 writing

Minor Cleanup/Improvements

• Pay attention to which orderings I'm using for address loadings
• Add more interrupts and improve the interrupt abstractions
• Update the volatile crate (Replaces Volatile with VolatilePtr)
• Support colored printing
• Error checking with cpuid in the bootloader
• Use proper locking instead of spin locks (lock api)
• Stack trace
• properly use rust test crate