Buildroot external tree for MangoPi MQ-Pro

The task is to make a working distribution(boilerplate) to quickly prototype devices using this board.

Uses original buildroot 'master' branch
Uses some modified scripts from ya-streams
Tested on board revision v1.4 (pink) with TL8723DS wireless chip and 1Gb RAM

Default configuration

GCC 12.2
Binutils 2.39
Uboot, OpenSBI and Kernel 6.1 with patches from smaeul
Busybox init
Bluetooth
Wireless LAN
Sound enabled on headphone output (R, L, GND on board)
SSH

Inspired with ya-streams buildroot_external example and seeed-linux-buildroot project

Build instructions

Prepare build environment

Ubuntu 18.04, Ubuntu 22.04:

sudo apt-get install -y build-essential unzip libssl-dev

Debian 11.5

apt-get install -y build-essential unzip rsync bc libssl-dev

Download this project and navigate to project directory

git clone --recursive https://github.com/aevtyushkin/mangopi-mqpro-br.git
cd mangopi-mqpro-br

Init environment

source br-external/envsetup.sh

Select target

set_target mqpro

(optional) Customize image

m menuconfig

Build

m all

On successful build, image will be ready at output/mqpro/images/sdcard.img

Flash image on SD card

dd if=output/mqpro/images/sdcard.img of=/dev/YYY bs=1M conv=fsync

/dev/YYY is your SD card device, be careful here

On Windows-based hosts you can use Balena Etcher to flash image

Boot sequence

Boot0 -> OpenSBI -> Uboot -> Kernel

Kernel uses FDT from uboot, so dts compilation with kernel is not required. Boot0 set memory size in device tree on boot.

Additional configuration

All board-specific files are located at "br-external" directory, you can easily customize it. And its so easy to update buildroot tree at any time or check out specific branch

After first boot

Set root password

passwd root

Connect to WLAN

nmcli -t dev wifi connect "network-ssid" password "network-password"

Permit root login via ssh (don't use in production)

echo "PermitRootLogin yes" > /etc/ssh/sshd_config

Testing

Testing sound channels

speaker-test -twav -c2 -l2

Testing Bluetooth

bluetoothctl scan on

This will show nearby devices

Testing WLAN

nmcli -t

There should be wlan0 interface and IP address if you successfully connected to wireless network

Known issues

At this moment tty console on HDMI appears only if monitor cable is connected when board already started, ~20 seconds after power on.