Caravel Firmware with Rust

A blinky example for Caravel LiteX VexRiscv Core, written in Rust.

Toolchain setup

Run the following commands to install the toolchain:

cargo install cargo-binutils
rustup component add llvm-tools-preview
rustup target add riscv32i-unknown-none-elf
pip install bincopy

Compiling HEX file

cargo objcopy --release -- -O ihex firmware.hex

Compiling Verilog memory file (for simulation)

cargo objcopy --release -- -O binary firmware.bin
bincopy convert -i binary -o verilog_vmem firmware.bin firmware.vmem

Note: we use binary as the intermediate format as we need to relocate the code offset from 0x10000000 to 0x00000000.

Viewing the generated assembly

cargo objdump --release -- -d -S -C

License

Copyright (C) 2023 Uri Shaked. Release under the Apache 2.0 LICENSE.