View source for Rockpi4/rockpi-android10

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[[rockpi4 | ROCK Pi 4]] > [[Rockpi4/rockpi-android10 | Android10]]
  

Recommend build host is Ubuntu 16.04 64bit, for other hosts, refer official Android documents [https://source.android.com/setup/build/initializing Establishing a Build Environment].

==== Repo ====
<code bash>
    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
</code>

In China Download Repo:
<code bash>
    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
</code>

==== DockerFile ====
<code>
    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 libssl-dev python3 python-pip lzop swig

    #### For China
    RUN curl https://mirrors.tuna.tsinghua.edu.cn/git/git-repo > /usr/local/bin/repo && \
        chmod +x /usr/local/bin/repo && \
        which repo
    ENV REPO_URL='https://mirrors.tuna.tsinghua.edu.cn/git/git-repo/'
    #### For China End

    RUN pip install pycrypto
    ENV USER=android10-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 android10-docker
</code>

Build DockerFile
<code>
    radxa$ docker build -t android-builder:10.x --build-arg USER_ID=`id -u` --build-arg GROUP_ID=`id -g` $(which-dir-dockerfile-in)
</code>

==== Download source code ====

==== Build u-boot ====
<code bash>
    radxa:rockpi4-android10       $ cd u-boot
    radxa:rockpi4-android10/u-boot$ ./make.sh rk3399
    radxa:rockpi4-android10/u-boot$ cd ..
</code>
The generated images are **rk3399_loader_v_xxx.bin** , and **uboot.img**

==== Building kernel ====
For HDMI 4K  
<code bash>
    radxa:rockpi4-android10       $ cd kernel
    radxa:rockpi4-android10/kernel$ make rockchip_defconfig
    radxa:rockpi4-android10/kernel$ make rk3399-rockpi-4b.img -j$(nproc)
    radxa:rockpi4-android10/kernel$ cd ..
</code>

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 ====
Android Tablet:
<code bash>
    radxa:rockpi4-android10$ source build/envsetup.sh
    radxa:rockpi4-android10$ lunch rk3399_Android10-userdebug
    radxa:rockpi4-android10$ make -j$(nproc)
</code>
It takes a long time, take a break and wait...

==== Generate  images ====
<code bash>
    radxa:rockpi4-android10$ ln -s RKTools/linux/Linux_Pack_Firmware/rockdev/ rockdev
    radxa:rockpi4-android10$ ./mkimage.sh
</code>

==== Generated Image ====
Android Tablet
<code bash>
    radxa:rockpi4-android10        $ cd rockdev
    radxa:rockpi4-android10/rockdev$ ln -s Image-rk3399_Android10 Image
</code>

1. RkUpdate Image
<code>
    radxa:rockpi4-android10/rockdev$ ./mkupdate.sh
</code>
The images under rockdev/ are `update.img`

==== Installation ====
[https://wiki.radxa.com/Rockpi4/install/android-eMMC-rkupdate RkUpdate Image Install on eMMC module]<br>