Start here¶
zuzu is a education/learning microkernel written from scratch in C and ARM assembly targeting IoT devices. zuzuOS is the userspace that runs on top of it with drivers, services for protocol stacks, shell and other applications. Microkernels have a reputation for being too slow for practical use, mostly due to Mach. zuzu is an argument that this is no longer true for the embedded, IoT, and router-class systems.
About¶
This began as a hobby project, a way to put every piece of systems programming I cared about into one place and became a master's thesis and undergraduate capstone. It is still the project I most wanted to build in my life. It is named after our family cat, Zuzu, a Scottish Fold.
Design¶
The zuzu kernel revolves entirely around managing the five types of objects that userspace uses: Spaces, Tasks, Regions (currently Memory), Ports and Events. zuzu argues that these five objects, when designed the right way, are sufficient to describe what an IoT system will need.
Status¶
zuzu is still under active development. Contributions are appreciated, please read Contributing!
Third-party components¶
zuzu's own code is MIT-licensed. The components below keep their own licenses.
| Component | Location | License | Upstream |
|---|---|---|---|
| libfdt | vendor/libfdt/ |
BSD-2-Clause | dgibson/dtc |
| Kconfiglib 14.1.0 | vendor/kconfiglib/ |
ISC | ulfalizer/Kconfiglib |
| LVGL | vendor/lvgl/ (submodule) |
MIT | lvgl/lvgl |
| FatFs R0.16 | user/services/fsd/fatfs/ |
FatFs license | elm-chan.org/fsw/ff |
Credits¶
- zuzu logo designed by Zoz
- zuzuFONT designed by Esther (
fbcons)