RISC-V Toolchain installation & download

[pedro-javierf]

What is the required RISC-V toolchain for this project and where can it be downloaded/Installed? Is this standard riscv-gnu-toolchain or should be something else?

riscv32-unknown-elf-gcc
riscv32-unknown-elf-objcopy
etc

Thanks,

[Obijuan]

Yes, that is the standard toolchain. You can also use the Rars assembler/simulator if you like, for generating the executable file. I still have not documented how to do it, but I will

[pedro-javierf]

For anyone interested in getting the demo firmware to work as fast as possible, it is possible to use the following pre-built riscv32-gnu toolchain here: https://github.com/stnolting/riscv-gcc-prebuilt (the rv32i-2.0.0 version) to generate compatible binaries that are compatible for the RISC-V core in the Alhambra II. I've only tested in Ubuntu 20 VM.

The build instructions for the 32-bit gnu toolchain are not always up-to-date so this can be handy.