I'm a operating system enthusiast, this is my operating system project.
- ./
- bootloader: MBR and second stage loader
- build: the directory where the output file is stored
- kernel: kernel source code
- core: essential parts of the kernel
- def: some standard definitions
- stdlib: function that may be useful to the kernel
- mount_dir: where the rootfs image is mounted
- run: the bochs emulator configuration, BIOS and VGA firmware binary
- tools: some tools I've created
install these necessities on your computer to compile/test the system
- a linux-based system
- the Netwide assembler (nasm)
- a compiler, linker, and a assembler (i'm using gcc, ld, and as here)
- the "make" tool
- dosfstools (mkfs.fat)
- objcopy
- bochs emulator (if you wish to test the system on bochs vm)
one-liner installation on debian-based distros (some package installed by default):
apt install nasm gcc binutils make dosfstools bochs*
build the rootfs image:
make all
build the rootfs image and run with bochs emulator:
make run
clear the built binary:
make cleanup
by the way, the built kernel binary and other files could be found at build/rootfs.Since it's a FAT32-formatted image that is generated, same file could also be located in the root file system image
here's the list of finished/unfinished stuff
- write a first/second stage bootstrap program work on legacy BIOS
- retrieve VBE inforation from BIOS
- retrieve memory map with BIOS function e820
- basic exception handling
- 8259A pic (basic features)
- memory management using slab
- context switching and pcb structure
- the hard-coded SVGA number and screen resolution that only work on specific display cards
- keyboard scaning system
- choose keyboard set
- the scancode is incorrect (maybe?)
- the naming convention in the project is inconsistent