Recommend build host is Ubuntu 16.04 64bit, for other hosts, refer official Android documents Establishing a Build Environment.
$ mkdir -p ~/bin
$ wget 'https://storage.googleapis.com/git-repo-downloads/repo' -P ~/bin
$ chmod +x ~/bin/repoAndroid'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.
$ sudo apt-get update
$ sudo apt-get install openjdk-8-jdk python python-pip 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
$ sudo pip install pycryptoConfigure the JAVA environment
$ export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
$ export PATH=$JAVA_HOME/bin:$PATH
$ export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar$ mkdir rockpi4-android-p
$ cd rockpi4-android-pThen run:
$ ~/bin/repo init -u https://github.com/radxa/manifests.git -b rockpi-box-9.0 -m rockpi-release.xml
$ repo sync -j$(nproc) -cIt might take quite a bit of time to fetch the entire AOSP source code(around 86G)!
In China: Download Repo
$ curl https://mirrors.tuna.tsinghua.edu.cn/git/git-repo -o repo
$ export REPO_URL='https://mirrors.tuna.tsinghua.edu.cn/git/git-repo/'$ cd u-boot
$ make distclean
$ make mrproper
$ ./make.sh rk3399
$ cd ..The generated images are rk3399_loader_v_xxx.bin , idbloader.img and uboot.img
$ cd kernel
$ make ARCH=arm64 rockchip_defconfig
$ make rk3399-rockpi-4b.img -j$(nproc)
$ cd ..The generated images are boot.img:
- boot.img android p system as root boot.
$ source build/envsetup.sh
$ lunch rk3399-userdebug
# build Android TV
$ lunch rk3399_box-userdebug
$ make -j$(nproc)It takes a long time, take a break and wait...
$ ln -s RKTools/linux/Linux_Pack_Firmware/rockdev/ rockdev
$ ./mkimage.shThe generated images under rockdev/Image are
rockdev/Image/
├── boot.img
├── dtbo.img
├── gpt.img
├── idbloader.img
├── kernel.img
├── MiniLoaderAll.bin
├── misc.img
├── misc-recovery.img
├── oem.img
├── parameter.txt
├── pcba_small_misc.img
├── pcba_whole_misc.img
├── recovery.img
├── resource.img
├── system.img
├── trust.img
├── uboot.img
├── update.img
├── vbmeta.img
└── vendor.img
$ cd rockdev
$ ln -s Image-rk3399 Image
$ ./android-gpt.sh
### Android TV
$ cd rockdev
$ ln -s Image-rk3399_box Image
$ ./android-gpt.shIMAGE_LENGTH:9018403
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
The images under rockdev/Image are gpt.img
├── boot.img
├── gpt.img
├── idbloader.img
├── kernel.img
├── ......
└── uboot.img
Installation
you can use tf card or emmc module
$ sudo umount /dev/<Your device>*
# mac os maybe not supprot progress
$ sudo dd if=Image/gpt.img of=/dev/<Your device> bs=4M status=progress
$ syncthrough rockusb
# on device u-boot
# mmc 0 is your emmc module
# mmc 1 is your tf card
$ rockusb 0 mmc 1
# on pc
$ rkdeveloptool wl 0 Image/gpt.imgThere may be some performance loss when using tf card
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