Download compilation instructions:

 At present, the Android7.1 version does not do major maintenance.
Please compile and select the Android7.1 industry version(Main
maintenance). This version is more widely used in the fields of
industry and tablets and boxes. It has a stable performance and has
been verified by mass production. This version As the main maintenance
version of our company, it is applicable to all models of our RK3399
system.

Compile Android7.1 firmware

The Android SDK source package is relatively large, and the Android7.1
source package can be obtained as follows:

Android7.1 SDK

After downloading, verify the MD5 code:

   $md5sum ~/firefly_rk3399_android7.1_git_20211220.7z.001
   $md5sum ~/firefly_rk3399_android7.1_git_20211220.7z.002
   $md5sum ~/firefly_rk3399_android7.1_git_20211220.7z.003

   90145747b33ad6834cd065b594f6687f  firefly_rk3399_android7.1_git_20211220.7z.001
   6f28a1d66b1d168a89bfd3a7923775f8  firefly_rk3399_android7.1_git_20211220.7z.002
   dc4d87ba8574900eed84f60f9cbe3646  firefly_rk3399_android7.1_git_20211220.7z.003

After confirming that it is correct, you can unzip:

   mkdir -p ~/proj/Firefly-RK3399
   cd ~/proj/Firefly-RK3399
   7z x ~/firefly_rk3399_android7.1_git_20211220.7z.001 -r -o.
   git reset --hard

Update

   #1.Enter root dir
   cd ~/proj/Firefly-RK3399

   #2. pull bundle.git first
   git clone https://gitlab.com/TeeFirefly/rk3399-nougat-bundle.git .bundle

   # 3.If clone fail, get bundle package from [Android7.1 SDK]
   # The decompression instructions are as follows:

   7z x rk3399-nougat-bundle-20190612.7z -r -o. && mv rk3399-nougat-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

Firefly-RK3399 Product compilation method

HDMI display compilation

Compile HDMI+DP by default

   ./FFTools/make.sh -j8 -d rk3399-firefly -l rk3399_firefly_box-userdebug
   ./FFTools/mkupdate/mkupdate.sh -l rk3399_firefly_box-userdebug

EDP7.85 compilation

   ./FFTools/make.sh -j8 -d rk3399-firefly-edp -l rk3399_firefly_edp_box-userdebug
   ./FFTools/mkupdate/mkupdate.sh -l rk3399_firefly_edp_box-userdebug

MIPI7.85 compilation

   ./FFTools/make.sh -j8 -d rk3399-firefly-mipi -l rk3399_firefly_mipi_box-userdebug
   ./FFTools/mkupdate/mkupdate.sh -l rk3399_firefly_mipi_box-userdebug

Manual compilation Firefly-RK3399

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/Firefly-RK3399/kernel/
   make ARCH=arm64 firefly_defconfig
   make ARCH=arm64 firefly_defconfig
   make -j8 ARCH=arm64 rk3399-firefly.img

Compile U-boot:

   cd ~/proj/Firefly-RK3399/u-boot/
   make rk3399_box_defconfig
   make ARCHV=aarch64 -j8

Compile Android:

   cd ~/proj/Firefly-RK3399/
   source build/envsetup.sh
   lunch rk3399_firefly_box-userdebug
   make -j8
   ./mkimage.sh

Use Firefly official script to compile

Compile the kernel separately：

   cd ~/proj/Firefly-RK3399/
   ./FFTools/make.sh -k -j8

Compile the uboot separately：

   cd ~/proj/Firefly-RK3399/
   ./FFTools/make.sh -u -j8

Compile Android upper layer separately：

   cd ~/proj/Firefly-RK3399/
   ./FFTools/make.sh -a -j8

Compile ubooot, kernel, Android at the same time：

   cd ~/proj/Firefly-RK3399/
   ./FFTools/make.sh -j8

Package into a unified firmware

After compiling, execute the following command first, then use Firefly
official script to package into a unified SD card firmware, execute
the following command:

   ./FFTools/mkupdate/mkupdate.sh -l rk3399_firefly_box-userdebug

According to different -l XXX-userdebug parameters, the packaged
unified firmware will be stored in different directories (rockdev
/image-XXX/): product name XXX_XXX_date XXX.img

Packing the unified firmware "update.img" under Windows is also very
simple. Copy the compiled files to the "rockdev/Image" directory of
AndroidTool, and then run the "mkupdate.bat" batch file under the
"rockdev" directory. Create "update.img" and store it in the
"rockdev/Image" directory.

Generate firmware for tf card startup

After compiling, execute the following command first, then use Firefly
official script to package into a unified SD card firmware, execute
the following command:

   ./mkimage sdboot
   ./FFTools/mkupdate/mkupdate.sh update

Flash partition image

When compiling, executing ./mkimage.sh will repackage boot.img and
system.img, and copy other related image files to the directory
rockdev/Image-roc_3399_pc/. The following lists the image files used
by general firmware:

boot.img: Android's initial file image, responsible for initializing
and loading the system partition.

kernel.img: kernel image.

misc.img: misc partition image, responsible for starting mode
switching and parameter transfer in emergency mode.

parameter.txt: the partition information of emmc

recovery.img: emergency mode image.

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

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

trust.img: files related to wake-up from sleep

rk3399_loader_v1.08.106.bin: Loader file

uboot.img: uboot file

Please refer to

"Upgrade Firmware"

 to burn the partition image file.

If you are using a Windows system, copy the above image file to the
"rockdev/Image" directory of AndroidTool (firmware upgrade tool under
Windows), and then refer to the upgrade document to burn the partition
image. This has the advantage of using the default Just configure it
without modifying the path of the file.

update.img facilitates the release of firmware for end users to
upgrade the system. It is more convenient to use partition image
during development.