Compile Android9.0

Download Android SDK

Since the Android SDK source code package is relatively large, you can
obtain the Android 9.0 source code package in the following ways:

Download link

After the download is complete, verify the MD5 code before
decompression：

   $ md5sum /path/to/rk3399pro_firefly_android9.0_20191126.7z.001
   $ md5sum /path/to/rk3399pro_firefly_android9.0_20191126.7z.002

   6e1d3969c8a0f643522727ff07800bb5  rk3399pro_firefly_android9.0_20191126.7z.001
   a6b8d6a775c3d5ed28f4d41cb210a84d  rk3399pro_firefly_android9.0_20191126.7z.002

Then unzip：

   cd ~/proj/
   7z x ./rk3399pro_firefly_android9.0_20191126.7z.001 -oAIO-3399Pro
   cd ./AIO-3399Pro
   git reset --hard

The following is how to update from gitlab：

   #1. Enter the SDK root directory
   cd ~/proj/AIO-3399Pro

   #2. Download the remote bundle warehouse
   git clone https://gitlab.com/TeeFirefly/rk3399pro-pie-bundle.git .bundle

   #3. If downloading the warehouse fails, the current bundle warehouse occupies a large space, so there may be stuck or failed during synchronization.
   # You can download it from the Baidu Cloud link below and unzip it to the SDK root directory. The unzip command is as follows:

   7z x rk3399pro-pie-bundle.7z  -r -o. && mv rk3399pro-pie-bundle/ .bundle/

   #4. Update the SDK, and subsequent updates do not need to pull the remote warehouse again, just execute the following command
   .bundle/update

   #5. Follow the prompts to update the content to FETCH_HEAD, synchronize FETCH_HEAD to the firefly branch
   git rebase FETCH_HEAD

You can also view the source code online at the following address:

[https://gitlab.com/TeeFirefly/firenow-oreo-rk3399#]

AIO-3399PRO-JD4 product compilation method

HDMI+DP display compilation

Compile HDMI+DP by default

   ./FFTools/make.sh  -d rk3399pro-firefly-aiojd4 -j8 -l rk3399pro_firefly_aiojd4-userdebug
   ./FFTools/mkupdate/mkupdate.sh -l rk3399pro_firefly_aiojd4-userdebug

10.1 inch LVDS display compilation

   ./FFTools/make.sh  -d rk3399pro-firefly-aiojd4-lvds-HSX101H40C -j8 -l rk3399pro_firefly_aiojd4_lvds-userdebug
   ./FFTools/mkupdate/mkupdate.sh -l rk3399pro_firefly_aiojd4_lvds-userdebug

Manually compile AIO-3399PRO-JD4 Android 9.0

Before compiling, execute the following command to configure
environment variables:

   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

Compile the kernel:

   cd ~/proj/AIO-3399PRO-JD4/kernel/
   make ARCH=arm64 firefly_defconfig
   make -j8 ARCH=arm64 BOOT_IMG=../rockdev/Image-rk3399pro_firefly_aiojd4/boot.img rk3399pro-firefly-aiojd4.img

Note: If you are performing kernel debugging, you need to package
resource.img and kernel.img into boot.img and then burn the boot
partition to take effect. Note: If you are performing kernel
debugging, you need to package resource.img and kernel.img into
boot.img and then burn the boot partition to take effect.

Compile uboot:

   cd ~/proj/AIO-3399PRO-JD4/u-boot/
   ./make.sh rk3399pro

编译 Android：

   cd ~/proj/AIO-3399PRO-JD4/
   source build/envsetup.sh
   lunch rk3399pro_firefly_aiojd4-userdebug
   make -j8
   ./mkimage.sh

Partition mirroring

boot.img: Android initramfs image, including the basic file system of
the Android root directory, which is responsible for initializing and
loading the system partition.

system.img: Android file system partition image in ext4 file system
format.

kernel.img: Kernel image.

resource.img: Resource image, including boot image and kernel device
tree.

misc.img: misc partition image, responsible for the switch of boot
mode and the transfer of parameters in emergency mode.

recovery.img: Recovery mode image.

rk3399_loader_v1.12.112.bin: Loader file.

uboot.img: U-Boot image file.

trust.img: Arm trusted file (ATF) image file.

parameter.txt: partition layout and kernel command line.

vendor.img: TODO

oem.img: TODO

baseparameter.img: TODO

Other Android versions

<font color=#ff0000 size=3>Main maintenance:</font>  "Compile
Android9.0"

Support but not maintain:  "Compile Android8.1"