holodome / moose

yet another os (but with mooses)

moOSe

A unix-like operating system with aim at simplicity.

Features

• amd64 kernel
• Custom bootloader
• FAT12, FAT16, FAT32, ext2, ramfs filesystems
• ATA IO
• Multilevel feedback queue scheduler
• System calls
• Basic IP networking

Compiling & running

x86_64-elf-gcc crosscompilation toolchain and python3 are required for local build. qemu-system-x86_64 emulator is required for running. Currently running only in qemu is supported.

To produce OS image either run make or use docker buildx build -f Dockerfile --output . .

OS image moose.img is a virtual hard disk formatted with MBR.

to run pass it to qemu:

qemu-system-x86_64 -d guest_errors \
	-device pci-bridge,id=bridge1,bus=pci.0,chassis_nr=4 \
	-device rtl8139,netdev=moose0,bus=pci.0 -netdev user,id=moose0 \
	-drive file=moose.img,format=raw,index=0,if=ide \
	-no-reboot

Alternatively, make qemu can be used to build and launch qemu.

moose's Issues

need a readme

think you need a readme file (not txt pls)😤😤😤

stop using bios-provided memory ranges and use custom struct

Per-cpu data

Move 'current' to per-cpu

mbr

Redundant line

https://github.com/Holodome/moOSe/blob/0.1/moose/arch/amd64/boot/boot.S#L30

Mounting ramfs as root filesystem, and mounting ext2 disk on it

move architecture-specific functions away from kmain

Switching address space

Priority schedulerer based on red-black trees

sort & optimize memory map provided by bios

less magic numbers (preprocess linker scripts, include memory ranges)

.d files

Add support in global makefile

ist

Fat driver is able to create multiple files with same name in one directory

loading kernel as elf

Loading raw binary files from disk and launching them

amd64 asm wrapper

cpuid

debug compilation mode with asserts

APIC

kprintf %zu

physical allocator remove dynamic memory

map files

%.*s

System calls

Address space regions protection settings

ata get disk size