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rustBoot is a standalone bootloader written entirely in `Rust`, designed to run on anything from a microcontroller to a system on chip. It can be used to boot into bare-metal firmware or Linux.

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rustBoot

rustBoot is a standalone bootloader, written entirely in Rust, designed to run on anything from a microcontroller to a system on chip. It can be used to boot into bare-metal firmware or Linux.

rustBoot

Why rustBoot?

rustBoot aims to offer an OS and micro-architecture agnostic (i.e. highly portable) secure bootloader which is standards-compatible and easy to integrate into existing embedded software projects.

What is rustBoot

Features currently supported:

  • support for ARM Cortex-M, Cortex-A micro-architectures
  • support for multi-slot partitioning of microcontroller flash memory. This allows us to implement the boot/update approach for bare-metal firmware updates.
  • support for Aarch64 linux booting
  • elliptic curve cryptography for integrity and authenticity verification using RustCrypto crates
  • a tiny hardware abstraction layer for non-volatile memory (i.e. flash) access.
  • anti-rollback protection via version numbering.
  • a fully memory safe core-bootloader implementation with safe parsers and firmware-update logic.
  • power-interruptible firmware updates along with the assurance of fall-back availability.

Features planned:

  • switch to rust-based signing tools for manifest-header creation, key-generation and firmware signing to improve scalability and security (currently examples use a python implementation for this).
  • support for external flash devices (ex: SPI flash) and serial/console logging interfaces.
  • support for ARM TrustZone-M and A and certified secure hardware elements - microchip ATECC608a, NXP SE050, STSAFE-100
  • support for a highly secure and efficient firmware transport method over end-end mutually authenticated and encrypted channels via ockam-networking-libraries.

Documentation:

You can read the book for free online..

Note: rustBoot and the book are still in development (i.e. a work in progress).

Acknowledgment:

rustBoot's design was influenced by wolfBoot. It borrows wolfBoot's reliable-update design idea and builds on it with rust's memory safety guarantees, safer parsing libraries, compile-time state-transition checks and easy integration with crates (such as boards, HALs drivers etc.) developed by the embedded-rust community.

Support:

For questions, issues, feature requests, and other changes, please file an issue in the github project.

License:

rustBoot is licensed under

Contributing:

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the MIT license, shall be licensed as above, without any additional terms or conditions.

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rustBoot is a standalone bootloader written entirely in `Rust`, designed to run on anything from a microcontroller to a system on chip. It can be used to boot into bare-metal firmware or Linux.

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