Rockpi4/dev/rockpi-android-tv

English

ROCK Pi 4 > Android7-TV

For more up-to-date Android version, please refer to Working With Android section in Rockpi4.

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 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

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 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

   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=android7-docker

   ARG USER_ID=0
   ARG GROUP_ID=0
   RUN groupadd -g ${GROUP_ID} jenkins-docker && useradd -m -g jenkins-docker -u ${USER_ID} android7-docker

   USER android7-docker

Build DockerFile


   radxa$ docker build -t android-builder:7.x --build-arg USER_ID=`id -u` --build-arg GROUP_ID=`id -g` $(which-dir-dockerfile-in)

Download source code


   radxa$ mkdir rockpi4-android7-tv
   radxa$ cd rockpi4-android7-tv

Then run:


   radxa$ repo init -u https://github.com/radxa/rockpi4-android-tv-7.1.git -m rockchip_tv_nougat_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 rock-pi-4b-rk3399_defconfig
   radxa$ ./mk-uboot.sh
   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**:

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

Building AOSP


   radxa$ source build/envsetup.sh
   radxa$ lunch rk3399_box-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
   ├── idbloader.img
   ├── kernel.img
   ├── MiniLoaderAll.bin
   ├── misc.img
   ├── parameter.txt
   ├── pcba_small_misc.img
   ├── pcba_whole_misc.img
   ├── recovery.img
   ├── resource.img
   ├── system.img
   ├── trust.img
   └── uboot.img

Generated RkUpdate Image


   radxa$ cd rockdev
   radxa$ ln -s Image-rk3399_box Image
   radxa$ ./mkupdate.sh

The images under rockdev/ are `update.img`

Generated GPT Image


   radxa$ cd rockdev
   radxa$ ln -s Image-rk3399_box Image
   radxa$ ./android-gpt.sh

   IMAGE_LENGTH:3936291
   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           122879          24.000000      MB
   boot            122880          188415          32.000000      MB
   recovery        188416          253951          32.000000      MB
   backup          253952          483327          112.000000     MB
   cache           483328          745471          128.000000     MB
   system          745472          3891199         1536.000000    MB
   metadata        3891200         3923967         16.000000      MB
   baseparamer     3923968         3932159         4.000000       MB
   userdata        3932160         3932159         0.000000       MB

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

Installation

GPT Image Install on microSD
GPT Image Install on eMMC module
RkUpdate Image Install on eMMC module

There may be some performance loss when using microSD.