This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

Starfive VisionFive 2 JH7110


The StarFive VisionFive 2 is a development board with a StarFive JH7110 multi-core 64bit RISC-V SoC.

StarFive VisionFive 2 Board

Programming and debugging


Applications for the visionfive2 board configuration can be built as usual (see Building an Application) using the corresponding board name:

west build -b visionfive2

spl_tool is a jh7110 signature tool used to generate spl header information and generate zephyr.bin.normal.out.

./spl_tool -c -f build/zephyr/zephyr.bin

This will create a new file build/zephyr/zephyr.bin.normal.out that can be flashed. This step is necessary as zephyr binary must contain the SPL header info in order to run it in M-Mode (Machine Mode) since S-Mode (Supervisor Mode) is currently not supported.



The following steps use minicom for serial communication, feel free to use any other serial terminal that supports xmodem based file transfers. Thanks to @orangecms for his vf2-loader tool which makes the flashing process easier

git clone the vf2-loader tool from and xmodem tool from side by side.

VisionFive2 uses uart for flashing. Refer to VisionFive2 Recovery Quick Start Guide to connect your serial-to-usb converter. Now power on the board and using minicom access board’s serial and press the reset switch on the board until you see CCCCCC… prompt

Copy the zephyr.bin.normal.out from build/zephyr/zephyr.bin.normal.out to previously git cloned vf2-loader/ directory and cd into it. Flash the zephyr.bin.normal.out using this command:

cargo run -- zephyr.bin.normal.out && minicom -D /dev/ttyUSB0
cargo run -- zephyr.bin.normal.out && minicom -D /dev/ttyUSB0
Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Running `target/debug/vf2-loader zephyr.bin.normal.out`
Welcome to minicom 2.7.1
Compiled on Dec 23 2019, 02:06:26.
Port /dev/ttyUSB0, 14:59:24
Press CTRL-A Z for help on special keys
6*** Booting Zephyr OS build v3.6.0-rc3 ***
Hello World! visionfive2