Tsukushi (筑紫) is (eventually) a free and open-source 64-bit RISC-V application processor project. The hardware design of Tsukushi is written in Veryl as we believe that it is a balanced choice between modern developer experience and interoperability with legacy components. The hardware design and associated software of Tsukushi are licensed under weakly-reciprocal licenses so that you can integrate Tsukushi into your project without worries while we can keep Tsukushi free and open-source.
We are working on Eboshi (烏帽子), the first microarchitecture of Tsukushi. Eboshi will be an in-order uniprocessor supporting a subset of RVA23.
Unless otherwise noted, the hardware design is licensed under the CERN Open Hardware Licence Version 2 - Weakly Reciprocal or, at your option, any later version.
Unless otherwise noted, the associated software is licensed under the Mozilla Public License, Version 2.0.
The documentation is licensed under CC BY-SA 4.0.