RISC-V_U-Boot

Development repository for RISC-V U-Boot on Microsemi FPGA

This repository contains the U-Boot created by Microsemi for RISC-V core on Smartfusion2 M2Sxxx devices. The Smartfusion2 M2S150 FPGA Advance Dev Kit is used for RISC-V U-Boot and the FPGA design available at RISCV-on-Microsemi-FPGA.

RISC-V cross tools

Get the RISC-V cross tool from riscv github and follow the README file for installation.

    $ git clone --recursive https://github.com/riscv/riscv-gnu-toolchain

After clone of riscv-gnu-toolchain

$ cd riscv-gnu-toolchain

To build the 32-bit rv32 toolchain, use:

    $./configure --prefix={Installation directory} --with-arch=rv32imac --with-abi=ilp32
$ make linux

Getting U-Boot sources

    $ git clone https://github.com/Microsemi-SoC-IP/RISC-V_U-Boot
    $ cd RISC-V_U-Boot

Build U-Boot

1. Set the PATH

    $ export PATH=$PATH:${installation directory}/bin
   

2. Create U-Boot configuration based on architecture defaults:

    $ make riscv-m2sxxx_defconfig
   

3. Optionally edit the configuration via an ncurses interface:

    $ make menuconfig
   

4. Build the U-Boot image:

    $ make
   

Build and Debug U-Boot with Softconsole

The Softconsole available on RISCV-on-Microsemi-FPGA.

Follow the steps explained in Debug_setup_with_SC.docx document available in u-boot root directory.