A hobby x86(-64) protected-mode operating system. It is mostly used as a learning tool and a long-term tinkering project of mine, maybe something will come of it eventually.
The build system uses GNU make and several Makefiles for each component of Stelox.
It is not recommended to try to build each component individually--the Makefile in the root directory does the heavy lifting for you.
Nevertheless, to build Stelox, run make [run] ARCH=<name> [CROSS=<path to bin/ + target>]
An El-Torito ISO will be generated at build/images/stelox-<arch>.iso
| Name | Platform | Dependencies |
|---|---|---|
i386 |
32-bit x86 + BIOS | gcc, ld, objcopy, nasm, xorriso |
x86_64 |
64-bit x86 + UEFI | gcc, ld, objcopy, xorriso, mkfs.fat, mcopy |
x86-multi |
Both i386 and x86_64 |
All dependencies for i386 and x86_64 and isolinux |
Note: Unless compiled on a 32-bit host, i386 requires a cross-compiler to be passed
For example, if your cross-compiler GCC is located at
/opt/cross/bin/i686-elf-gccpassCROSS=/opt/cross/bin/i686-elfwith themakecommand.
The bootloader aims to be able to load (optionally) Multiboot 2-compliant ELF images.
On i386, the bootloader looks for a ELF32 image at KERNEL/KERNEL32.ELF. Likewise, on x86_64, it looks for a ELF64 image at KERNEL/KERNEL64.ELF.
It loads the image into memory and then looks for a valid Multiboot2 header. If one is not found, it will simply transfer control to the freshly-loaded OS.
#master: The most stable up-to-date features
#kernel-dev: Uses GRUB2 as a stable base for more bleeding-edge kernel development
#x64-uefi: Historical development for x86-64 and UEFI support, new UEFI features will be directly added to #master