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probe-rs flash loader for Hifive1 Rev B

This crate provides a flash loader for the Hifive1 Rev B board from Sifive. It is designed to be used with probe-rs, but should be usable with other tools which use flash loaders based on the ARM CMSIS-PACK standard.

Build

To build the flashloader, only a Rust compiler with support for RISCV must be installed. See http://rustup.rs for installation instructions for Rust. The riscv target can be added using rustup:

rustup target install rustup target install riscv32imac-unknown-none-elf

The flash loader can then be compiled using cargo:

cargo build --release

The resulting binary can be found in target/riscv32imac-unknown-none-elf/release/hifive-flashloader.

Creating a target description file

To use the flashloader with probe-rs, a target description file needs to be created. This can be done using the target-gen tool. Assuming the flash loader was built in release mode, and target-gen is installed:

target-gen elf target/riscv32imac-unknown-none-elf/release/hifive-flashloader hifive.yml

The resulting target description file can be found in hifive.yml. The flash algorithm will already be populated, the remaining entries have to be filled in manually.

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