An implementation of RIOT's bootloader in Rust and Hacspec. It works as a drop-in replacement for RIOT's riotboot bootloader, albeit with reduced features (no serial, no dfu, ...).

Both the pure Rust and the Hacspec implementation have been tested on nrf52840dk.

• Install rust

• Install the rust-std component for your target, in this case:

  $ rustup target add thumbv7em-none-eabi

riotboot-rs supports both pure Rust and a Hacspec built. Choose by using one of the features "internal" or "verified". Beware, the non-release build might be too large to fit in the bootloader area as specified in memory.x.

$ cargo build --release --target thumbv7em-none-eabi --features verified

The resuling binary can be flashed with the included flash.sh:

$ sh flash.sh target/thumbv7em-none-eabi/release/riotboot-rs

The actual source code should work as is on every Cortex-M MCU. The memory map (memory.x) might need adjustment, as does the flash script.