rustsbi

RustSBI

RISC-V Supervisor Binary Interface (SBI) implementation in Rust; runs on M-mode.

Binary downloads

From version 0.2.0, RustSBI is reformed into a library, thus no longer provides binary downloads for specific platforms. You may visit RustSBI-QEMU or RustSBI-K210 projects depending on the platforms you need.

Features

• Functional and extensible operating system runtime
• Fully support to RISC-V SBI specification v0.2
• Adapted for unix-like operating systems
• Written in Rust
• Competitive to OpenSBI with most of its function
• Bundled with a test framework for SBI implementations
• Supports QEMU emulator (priv. spec v1.11)
• Backward compatible to Kendryte K210 with spec v1.9, MMU and S-Mode

Frequently asked questions

1. Can I use RustSBI on C based kernels?

Yes, you can! RustSBI strictly follows RISC-V SBI standard. All features are prepares for all programming languages, as long as they support RISC-V SBI defined calling convention.

If your kernel language supports other SBI implementations, typically it will support RustSBI in the same way.

Talks and documents

This project is originally a part of rCore Summer of Code 2020 activities, now it is capable of running rCore-Tutorial and other OS kernels on wide supported RISC-V devices.

Blog article (Chinese):

• Rust in Embedded World, Jan 2021
• rCore Operating System Lab Final Report, Aug 2020

Slides (Chinese):

• Design and Implementation of RustSBI, Dec 2020
• The Rust Embedded System Development, Dec 2020
• Operating Systems on Rust and RISC-V, Aug 2020

Notes on platform implementation

1. RustSBI can be used as a library. Under normal circumstances, RustSBI platform can be implemented with embedded Rust's embedded-hal libraries.
2. Contributions are welcomed! We welcome to implement RustSBI for both FPGA cores and real cores. Implementations for emulators are also welcomed. Fire a pull request if you are ready!

License & Copyright

This project is licensed under either of

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
• Mulan PSL v2 (LICENSE-MULAN or https://opensource.org/licenses/MulanPSL-2.0)