An ongoing effort porting NixOS to the RISC-V architecture through cross compilation
nix build .#hydraJobs.visionfive2May have to change
hardware.deviceTree.name = "starfive/jh7110-starfive-visionfive-2-v1.3b.dtb";
as appropriate if your board is v1.2a
Prebuilt image is available at https://hydra.nichi.co/job/nixos/riscv/visionfive2/latest
The resulting image includes u-boot, see VisionFive 2 Single Board Computer Quick Start Guide for instructions on booting from sdcard.
Ethernet ports do work to a certain extent, but far from approaching the rated 1Gbps, could be due to misconfigurations in the device tree.
Drivers for PCIe, USB and GPU (and many other peripherals) are not included yet.
This work is sponsored by PLCT Lab.