Hexahedron

Hexahedron is a modern replacement for the reduceOS kernel.

What is this?

A replacement for the reduceOS kernel, developed to follow standards better and have higher code quality.

Project structure

• base: Contains the base filesystem. Files in base/initrd go in the initial ramdisk and files in base/sysroot go in sysroot.
• buildscripts: Contains buildscripts for the build system
• conf: Contains misc. configuration files, such as architecture files, GRUB configs, extra boot files, etc.
• drivers: Drivers for Hexahedron, copied based on their configuration.
• external: Contains external projects, such as ACPICA. See External Components.
• hexahedron: The main kernel project
• libpolyhedron: The libc/libk for the project.
• libkstructures: Contains misc. kernel structures, like lists/hashmaps/parsers/whatever

Building

First, gather the prerequisites. See the section on External Components.

Run make all to perform a build.

To change the build configuration, edit buildscripts/config.sh and conf/build/<architecture>.mk.

External components

Certain external components are available in external. Here is a list of them and their versions:

• ACPICA UNIX* (Intel License): Version 20240927 available here

Keeping track of potential issues

• Relocatable code is not implemented in x86_64
• GRUB might error out on Multiboot2 if the relocatable max address is too low

Licensing

Hexahedron and reduceOS are released under the terms of the BSD 3-clause license (available in LICENSE).
All files unless specified fall under this license.