Yocto on milk-v duo

korneliuszo · October 24, 2023, 6:48pm

When we can expect yocto buildsysrem for milk-v duo?

xorok30249 · October 25, 2023, 8:10am

The duo support is under review.

github.com/riscv/meta-riscv

milkv-duo: Add initial support for Milk-V Duo board

riscv:master ← xyq1113723547:milkv-duo

opened 09:54PM - 09 Oct 23 UTC

xyq1113723547

+431 -0

Milk-V Duo is an ultra-compact dual-core RISC-V development board from Sophgo us…ing CVITEK CV1800B SOC. For more details please visit [milkv.io/duo](milkv.io/duo) The Linux kernel, U-Boot, OpenSBI are open-sourced and placed in the official [SDK](github.com/milkv-duo/duo-buildroot-sdk), but not up-streamed yet. The required firmware fip.bin in boot partition can compile from source in SDK, but it requires two custom down-stream toolchains and prebuilt object files in the SDK, so it's hard to integrate here. kernel defconfig seems a bit redundant here, but it's not in the forked kernel source and official documentation says it's indeed out of the kernel source tree [here](https://doc.sophgo.com/cvitek-develop-docs/master/docs_latest_release/CV180x_CV181x/en/01.software/OSDRV/U-boot_Porting_Development_Guide/build/html/2_Function_Overview.html). Auto-generated .its in yocto differs from the specs that the firmware requires and thus can not boot. Therefore, it's better to provide multi.its, compile required cv1800b_milkv_duo_sd.dtb from my modified kernel version and generated the required boot.sd(kernel.itb) in boot partition by custom commands.

kinsa · April 5, 2024, 3:22am

Here are some enhancements too

Recipe for mainline kernel is included, based on the accepted patches documented here. (Except for the board reset and Ethernet driver)

kinsa · April 15, 2024, 8:45am

I’ve created an overlay for these enhancements and also instructions to build an image from scratch using OpenEmbedded/Yocto.

github.com

kinsamanka/meta-milkv/blob/master/README.md

# meta-milkv
Milk-V Duo overlay for OpenEmbedded/Yocto

[![license](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/riscv/meta-riscv/blob/kraj/master/COPYRIGHT)

## Description

This is the general hardware-specific BSP overlay for Milk-V Duo board.

## Dependencies

This layer depends on:

* URI: https://github.com/riscv/meta-riscv
  * branch: master
  * revision: HEAD

## Quick Start

### Install required host packages

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