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Rockpi4/rockpi-android9


ROCK Pi 4 > Android9


Recommend build host is Ubuntu 16.04 64bit, for other hosts, refer official Android documents Establishing a Build Environment.

Repo

   radxa$ wget 'https://storage.googleapis.com/git-repo-downloads/repo' -P /tmp/
   radxa$ sudo cp /tmp/repo /usr/local/bin/repo
   radxa$ sudo chmod +x /usr/local/bin/repo

In China Download Repo:

   radxa$ echo "export REPO_URL='https://mirrors.tuna.tsinghua.edu.cn/git/git-repo/'" >> ~/.bashrc
   radxa$ source ~/.bashrc
   radxa$ curl https://mirrors.tuna.tsinghua.edu.cn/git/git-repo -o /tmp/repo
   radxa$ sudo cp /tmp/repo /usr/local/bin/repo
   radxa$ sudo chmod +x /usr/local/bin/repo

Init Environment

Android's source code primarily consists of Java, C++, and XML files.
To compile the source code, you'll need to install OpenJDK 8, GNU C and C++ compilers, XML parsing libraries, ImageMagick, and several other related packages.

   radxa$ apt-get update -y && apt-get install -y openjdk-8-jdk python git-core gnupg flex bison gperf build-essential \
          zip curl liblz4-tool zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 \
          lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache \
          libgl1-mesa-dev libxml2-utils xsltproc unzip mtools u-boot-tools \
          htop iotop sysstat iftop pigz bc device-tree-compiler lunzip \
          dosfstools vim-common parted udev lzop

Configure the JAVA environment

   radxa$ export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
   radxa$ export PATH=$JAVA_HOME/bin:$PATH
   radxa$ export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar

DockerFile

   FROM ubuntu:xenial
   RUN apt-get update -y && apt-get install -y openjdk-8-jdk python git-core gnupg flex bison gperf build-essential \
       zip curl liblz4-tool zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 \
       lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache \
       libgl1-mesa-dev libxml2-utils xsltproc unzip mtools u-boot-tools \
       htop iotop sysstat iftop pigz bc device-tree-compiler lunzip \
       dosfstools vim-common parted udev lzop
   RUN curl https://mirrors.tuna.tsinghua.edu.cn/git/git-repo > /usr/local/bin/repo && \
       chmod +x /usr/local/bin/repo
   RUN which repo
   ENV REPO_URL='https://mirrors.tuna.tsinghua.edu.cn/git/git-repo/' USER=android9-docker
   ARG USER_ID=0
   ARG GROUP_ID=0
   RUN groupadd -g ${GROUP_ID} jenkins-docker && useradd -m -g jenkins-docker -u ${USER_ID} android9-docker
   USER android9-docker

Build DockerFile

   radxa$ docker build -t android-builder:9.x --build-arg USER_ID=`id -u` --build-arg GROUP_ID=`id -g` $(which-dir-dockerfile-in)

Download source code

   radxa$ mkdir rockpi4-android9
   radxa$ cd rockpi4-android9

Then run:

   radxa$ repo init -u https://github.com/radxa/manifests.git -b rockpi-box-9.0 -m rockpi-release.xml
   radxa$ repo sync -d --no-tags -j4

It might take quite a bit of time to fetch the entire AOSP source code(around 86G)!

Build u-boot

   radxa$ cd u-boot
   radxa$ ./make.sh rk3399
   radxa$ cd ..

The generated images are **rk3399_loader_v_xxx.bin** , **idbloader.img** and **uboot.img**

Building kernel

For HDMI 4K

   radxa$ cd kernel
   radxa$ make rockchip_defconfig
   radxa$ make rk3399-rockpi-4b.img -j$(nproc)
   radxa$ cd ..

The generated images are **kernel.img** and **resource.img**:

  1. kernel.img, kernel with rkcrc checksum
  2. resource.img, contains dtb and boot logo, Rockchip format resource package

Building AOSP

Android TV:

   radxa$ source build/envsetup.sh
   radxa$ lunch rk3399_box-userdebug
   radxa$ make -j$(nproc)

Android Tablet:

   radxa$ source build/envsetup.sh
   radxa$ lunch rk3399-userdebug
   radxa$ make -j$(nproc)

It takes a long time, take a break and wait...

Generate images

   radxa$ ln -s RKTools/linux/Linux_Pack_Firmware/rockdev/ rockdev
   radxa$ ./mkimage.sh

The generated images under rockdev/Image-* are

   ├── boot.img
   ├── dtbo.img
   ├── idbloader.img
   ├── kernel.img
   ├── misc.img
   ├── oem.img
   ├── parameter.txt
   ├── pcba_small_misc.img
   ├── pcba_whole_misc.img
   ├── recovery.img
   ├── resource.img
   ├── system.img
   ├── trust.img
   ├── uboot.img
   ├── vbmeta.img
   └── vendor.img

Generated Image

Android TV

   radxa$ cd rockdev
   radxa$ ln -s Image-rk3399_box Image

Android Tablet

   radxa$ cd rockdev
   radxa$ ln -s Image-rk3399 Image

1. RkUpdate Image

   radxa$ ./mkupdate.sh

The images under rockdev/ are `update.img`

2. GPT Image

   radxa$ ./android-gpt.sh
   IMAGE_LENGTH:9018403
   simg2img system.img
   simg2img vendor.img
   simg2img oem.img
   idbloader       64              16383           8.000000       MB
   Warning: The resulting partition is not properly aligned for best performance.
   uboot           16384           24575           4.000000       MB
   trust           24576           32767           4.000000       MB
   misc            32768           40959           4.000000       MB
   resource        40960           73727           16.000000      MB
   kernel          73728           139263          32.000000      MB
   dtb             139264          147455          4.000000       MB
   dtbo            147456          155647          4.000000       MB
   vbmeta          155648          157695          1.000000       MB
   boot            157696          223231          32.000000      MB
   recovery        223232          354303          64.000000      MB
   backup          354304          583679          112.000000     MB
   security        583680          591871          4.000000       MB
   cache           591872          1640447         512.000000     MB
   system          1640448         6883327         2560.000000    MB
   metadata        6883328         6916095         16.000000      MB
   vendor          6916096         7964671         512.000000     MB
   oem             7964672         9013247         512.000000     MB
   frp             9013248         9014271         0.500000       MB
   userdata        9014272         9014271         0.000000       MB
   Warning: The resulting partition is not properly aligned for best performance.

The images under rockdev/Image are `gpt.img`

Installation

GPT Image Install on microSD
GPT Image Install on eMMC module
GPT Image Install on M.2 NVME SSD
RkUpdate Image Install on eMMC module

There may be some performance loss when using microSD.