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[[Buildroot for RK3399|English]]
 
  
==Buildroot简介==
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{{RockchipUnbrick|NanoPC-T4}}
{{RK3399 Buildroot Intro/zh}}
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==下载体验版固件==
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访问[http://download.friendlyarm.com/nanopct4 此处的下载地址]下载:<br />
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{| class="wikitable"
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|-
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  | colspan=2 | Image Files
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|-
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  | rk3399-sd-buildroot-linux-4.19-arm64-YYYYMMDD.img.zip
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  | 从SD卡启动的固件
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|-
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  | rk3399-eflasher-buildroot-YYYYMMDD.img.zip
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  | 用于烧写到eMMC运行
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|}
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解压后用 dd 或者 win32image 烧写到 SD 卡。
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==帐户与密码==
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用户名: root<br />
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密码: rockchip<br />
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<br />
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密码可通过以下文件更改:
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<syntaxhighlight lang="bash">
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buildroot/configs/rockchip/network.config
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</syntaxhighlight>
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==获取项目源代码==
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===安装 repo 工具===
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首先需要安装 repo 工具:
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<syntaxhighlight lang="bash">
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git clone https://github.com/friendlyarm/repo -b rk-linux-sdk --depth 1
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sudo cp repo/repo /usr/bin/
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</syntaxhighlight>
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===下载项目源代码===
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有以下两种途径获取项目源代码,中国大陆用户建议使用方法1的途径下载:
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====方法一:使用网盘里的repo压缩包====
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网盘下载地址: [http://download.friendlyarm.com/{{#replace:{{#replace:{{BASEPAGENAME}}| |}}|/zh|}} 点击进入]<br />
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文件位于网盘的以下路径:sources/buildroot-rk3399-YYYYMMDD.tar (YYYYMMDD表示打包的日期)<br />
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从网盘中获取的 repo 压缩包在解压之后,需要执行一下以下命令做一次解包动作:
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<syntaxhighlight lang="bash">
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tar xvf /path/to/netdisk/sources/buildroot-rk3399-YYYYMMDD.tar
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cd buildroot-rk3399
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repo sync -l
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</syntaxhighlight>
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用此方法得到的源代码版本是repo打包时的版本,如果想拉取到官方最新的版本,可以去掉 -l 参数,执行一次 repo sync, 例如:
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<syntaxhighlight lang="bash">
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cd buildroot-rk3399
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repo sync --no-clone-bundle
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</syntaxhighlight>
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====方法二:从github下载====
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<syntaxhighlight lang="bash">
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mkdir buildroot-rk3399
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cd buildroot-rk3399
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repo init -u https://github.com/friendlyarm/buildroot_manifests \
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  -b rockchip-kernel4.19 -m rk3399.xml --repo-url=https://github.com/friendlyarm/repo \
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  --no-clone-bundle
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repo sync -c --no-clone-bundle
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</syntaxhighlight>
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====同步项目到最新版本====
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<syntaxhighlight lang="bash">
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cd buildroot-rk3399
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repo sync -c --no-clone-bundle
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</syntaxhighlight>
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同步过程中,由于网络原因出现中断,可以使用下面脚本同步代码:
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<syntaxhighlight lang="bash">
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#! /bin/bash
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repo sync -c --no-clone-bundle
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while [ $? -ne 0 ];
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do 
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    repo sync -c --no-clone-bundle
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done
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</syntaxhighlight>
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==如何编译==
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===搭建编译环境===
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在PC的Ubuntu系统下 (建议使用版本18.04-64bit),执下以下命令安装所需的软件:
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<syntaxhighlight lang="bash">
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wget -O - https://raw.githubusercontent.com/friendlyarm/build-env-on-ubuntu-bionic/master/install.sh | bash
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</syntaxhighlight>
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===在Docker容器里编译===
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请使用此链接提供的Docker映象, 具体方法可阅读此链接中的README:<br />
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https://github.com/friendlyarm/friendlyelec-ubuntu18-docker<br />
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===查看帮助===
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不带参数执行 build.sh,默认是打印帮助信息:
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<syntaxhighlight lang="bash">
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./build.sh
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</syntaxhighlight>
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显示的帮助信息如下 (以RK3399平台为例):
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<syntaxhighlight lang="bash">
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USAGE: ./build.sh <parameter>
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# 选择目标的硬件平台:
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  ./build.sh nanopc_t4.mk
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  ./build.sh nanopi_m4.mk
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  ./build.sh nanopi_neo4.mk
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  ./build.sh nanopi_r4s.mk
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  ./build.sh som-rk3399.mk
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# 编译各个模块:
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  ./build.sh all                -编译所有组件
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  ./build.sh uboot              -单独编译uboot
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  ./build.sh kernel            -单独编译kernel
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  ./build.sh buildroot          -单独编译buildroot
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  ./build.sh sd-img            -生成sd启动的镜像文件
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  ./build.sh emmc-img          -生成用于安装到emmc的镜像文件 (镜像文件需要dd到sd卡,通过sd卡启动安装程序)
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# 清理:
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  ./build.sh cleanall
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</syntaxhighlight>
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===全自动方式编译===
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初次编译,需要选择目标的硬件平台,以RK3399平台的R4S为例:
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<syntaxhighlight lang="bash">
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./build.sh nanopc_r4s.mk
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</syntaxhighlight>
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执行上述命令,会自动编译所有组件,其中包括u-boot, kernel 和 buildroot,并生成sd启动的烧写镜像文件。
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===编译单独的模块===
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====kernel====
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<syntaxhighlight lang="bash">
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./build.sh kernel
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</syntaxhighlight>
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====u-boot====
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<syntaxhighlight lang="bash">
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./build.sh uboot
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</syntaxhighlight>
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====buildroot====
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<syntaxhighlight lang="bash">
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./build.sh buildroot
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</syntaxhighlight>
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===生成sdcard固件===
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<syntaxhighlight lang="bash">
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sudo ./build.sh sd-img
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</syntaxhighlight>
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打包img成功后,终端会显示如下信息,可以参考下面的dd命令将img写入sd卡,注意/dev/sdX需要替换成真实的sd卡设备:<br />
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<syntaxhighlight lang="bash">
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Run the following for sdcard install:
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    sudo dd if=out/Buildroot_20211213_NanoPi-R4S_arm64_sd.img bs=1M of=/dev/sdX
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</syntaxhighlight>
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===生成emmc (eflasher) 固件===
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<syntaxhighlight lang="bash">
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sudo ./build.sh emmc-img
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</syntaxhighlight>
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打包img成功后,终端会显示如下信息,可以参考下面的dd命令将img写入sd卡,注意/dev/sdX需要替换成真实的sd卡设备:<br />
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<syntaxhighlight lang="bash">
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Run the following for sdcard install:
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    sudo dd if=out/Buildroot_20211213_NanoPi-R4S_arm64_eflasher.img bs=1M of=/dev/sdX
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</syntaxhighlight>
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用此sd卡启动eflasher系统,执行eflasher命令,将系统写入emmc,之后就可以拨掉sd卡,从emmc启动buildroot了。
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==Buildroot定制与开发==
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===目录结构===
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<syntaxhighlight lang="bash">
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├── buildroot-xxyyzz
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│  ├── buildroot -> buildroot源代码
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|  └── toolchain -> 交叉编译器,仅用于编译u-boot与kernel
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│  ├── build.sh -> 编译脚本
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│  ├── device/friendlyelec -> 用于适配友善电子开发板的相关文件
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│  ├── kernel -> 内核
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│  └── u-boot -> u-boot
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│  └── app -> rockchip的app
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│  └── external -> rockchip的buildroot软件包
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│  └── rkbin -> rockchip的引导程序
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│  └── scripts -> 打包img的相关脚本
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</syntaxhighlight>
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====更改Buildroot配置====
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* 列出当前可用的配置
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<syntaxhighlight lang="bash">
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cd buildroot
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make list-defconfigs
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</syntaxhighlight>
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适合FriendlyELEC RK3399的配置所下:<br />
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friendlyelec_rk3399_defconfig          - Build for friendlyelec_rk3399<br />
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* 使用menuconfig更改配置
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<syntaxhighlight lang="bash">
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make friendlyelec_rk3399_defconfig
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make menuconfig
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make savedefconfig
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diff .defconfig configs/friendlyelec_rk3399_defconfig
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cp .defconfig configs/friendlyelec_rk3399_defconfig
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</syntaxhighlight>
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* 重新编译
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<syntaxhighlight lang="bash">
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cd ../
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./build.sh buildroot
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</syntaxhighlight>
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===预装文件到文件系统===
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将文件放在 device/friendlyelec/rk3399/common-files,然后重新打包img:
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<syntaxhighlight lang="bash">
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sudo ./build.sh sd-img
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sudo ./build.sh emmc-img
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</syntaxhighlight>
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===修改u-boot和kernel===
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直接修改u-boot和kernel目录下的文件即可。
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===使用sdk里的交叉编译器===
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<syntaxhighlight lang="bash">
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export PATH=$PWD/buildroot/output/rockchip_rk3399/host/bin/:$PATH
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aarch64-buildroot-linux-gnu-g++ -v
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</syntaxhighlight>
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显示版本如下:<br />
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gcc 版本 6.4.0 (Buildroot 2018.02-rc3-g4f000a0797)
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===交叉编译Qt程序===
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<syntaxhighlight lang="bash">
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git clone https://github.com/friendlyarm/QtE-Demo.git
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cd QtE-Demo
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../buildroot/output/rockchip_rk3399/host/bin/qmake QtE-Demo.pro
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make
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</syntaxhighlight>
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要实现开机自动运行你的Qt程序,可将QtE-Demo拷贝到开发板上,然后修改 /etc/init.d/下的S50launcher,将/usr/local/QLauncher/QLauncher &这一行改为QtE-Demo的文件路径即可。
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==常见问题==
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===如何获取用于USB Type-C烧写的文件?===
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执行 build.sh emmc-img 之后,在 scripts/sd-fuse 下面会有一个 buildroot 目录,使用android_tools工具加载这个目录下的文件即可。
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==报告bug==
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欢迎发邮件到:techsupport@friendlyarm.com<br />
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==更新日志==
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===2021-12-23===
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* 简化构建脚本, 并将buildroot更新至原厂新版本
+

Latest revision as of 09:23, 4 June 2024

1 Unbricking Method

If the ROM is not installed correctly, causing the development board to become bricked, and you might not have the opportunity to reinstall the ROM via an SD card, you need to enter Maskrom mode to unbrick it by erasing the storage device.

1.1 Windows Users

1.1.1 Download Required Files

  • Get the necessary tools: Visit here, find RKDevTool_v3.19_for_window.zip and DriverAssitant_v5.12.zip in the 05_Tools directory, and download them to your local machine.
  • Install Rockchip USB driver and RKDevTool: Extract DriverAssitant_v5.12.zip to install the Rockchip USB driver, and extract RKDevTool_v3.19_for_window.zip to obtain the Rockchip flashing tool RKDevTool.
  • Get the loader: Visit here, enter the tools directory corresponding to your CPU model, and download MiniLoaderAll.bin.

1.1.2 Enter Maskrom Mode to Erase the Storage Device

  • Connect NanoPC-T4 to your computer using a USB data cable.
  • Start RKDevTool on your computer.
  • Disconnect the power from NanoPC-T4, hold down the MASK button, connect the power, and release the button when you see Found One MASKROM Device displayed at the bottom of the interface, as shown below:

Rkdevtool found one maskrom device.png

  • Click the Advanced Function tab in the RKDevTool interface.
  • In the Boot text box, select MiniLoaderAll.bin, then click the Download button.
  • Select EMMC, click Switch Storage, then click the EraseAll button to erase the eMMC.

Rkdevtool erase emmc.png

  • At this point, NanoPC-T4 is restored to its initial state and can be normally booted via SD card or eMMC.

1.2 Linux/Mac Users

1.2.1 Download the Required Files

  • Get the necessary tools: Visit here and find upgrade_tool_v2.30_for_linux.tgz (or for Mac users, select upgrade_tool_v2.25_for_mac.tgz) in the 05_Tools directory and download it locally.
  • Get the loader: Visit here, enter the tools directory corresponding to your CPU model, and download MiniLoaderAll.bin.

1.2.2 Installation for upgrade_tool

The following commands are for Linux, with only slight differences in file and directory names for Mac users:

tar xzf upgrade_tool_v2.30_for_linux.tgz
cd upgrade_tool_v2.30_for_linux
sudo cp upgrade_tool /usr/local/sbin/
sudo chmod 755 /usr/local/sbin/upgrade_tool

1.2.3 Enter Maskrom Mode to Erase the Storage Device

  • Connect NanoPC-T4 to the computer using a USB data cable.
  • Disconnect the power from NanoPC-T4, hold down the MASK button, connect the power, and release the button after 4 seconds.
  • Check the connection with the following command:
upgrade_tool LD

A result similar to "DevNo=1 Vid=0x2207,Pid=0x350b,LocationID=13 Mode=Maskrom SerialNo=" indicates that the device has been detected.

  • Erase the eMMC with the following command:
upgrade_tool EF MiniLoaderAll.bin
  • At this point, NanoPC-T4 has been restored to its initial state and can boot the system normally via SD card or eMMC.