3. Compile Android7.1 Industry firmware

3.1. Download compilation instructions:

Android7.1 industry version it is more widely used in industry and tablet and box fields, and has been verified for stable performance in mass production. This version also serves as our main maintenance version and is applicable to all models of our RK3399 system.

3.2. Compile Android7.1 industry firmware

3.2.1. Download Android SDK

The Android SDK source package is relatively large, you can go to the download page to get the Android7.1 source package: Android7.1 industry SDK

After downloading, verify the MD5 code:

$md5sum ~/firefly_rk3399_industry7.1_git_20211216.7z.001
$md5sum ~/firefly_rk3399_industry7.1_git_20211216.7z.002
$md5sum ~/firefly_rk3399_industry7.1_git_20211216.7z.003
$md5sum ~/firefly_rk3399_industry7.1_git_20211216.7z.004

3387ebaa3d8e43dd1164527d4054621b  firefly_rk3399_industry7.1_git_20211216.7z.001
a74bb71622add3d2b558dc5a0bfb51e4  firefly_rk3399_industry7.1_git_20211216.7z.002
00f3202d42559e02cefc5300e48e1690  firefly_rk3399_industry7.1_git_20211216.7z.003
fb64756ff7e24d9bb76ecd4678afb55f  firefly_rk3399_industry7.1_git_20211216.7z.004

After confirming that it is correct, you can unzip:

mkdir -p ~/proj/firefly-rk3399-Industry
cd ~/proj/firefly-rk3399-Industry
7z x ~/firefly_rk3399_industry7.1_git_20211216.7z.001 -r -o.
git reset --hard

Note: Be sure to update the remote warehouse after decompression. The following is how to update from gitlab:

1. Enter the SDK root directory
cd ~/proj/firefly-rk3399-Industry

2. Download remote bundle repository
git clone https://gitlab.com/TeeFirefly/rk3399-industry-nougat-bundle.git .bundle

3. If the download warehouse fails, the current bundle warehouse is about 1.4G, so there may be stuck or failed problems during synchronization. You can download and unzip it from the Baidu cloud link below to the SDK root directory.

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

Google Driver[bundle download]

3.3. Firefly-RK3399 industry version product compilation method

3.3.1. Overall Compilation

3.3.1.1. Public Compile

3.3.1.1.1. HDMI+DP
Overall compilation:
./FFTools/make.sh -d rk3399-firefly -j8 -l rk3399_firefly-userdebug
./FFTools/mkupdate/mkupdate.sh -l rk3399_firefly-userdebug

3.3.2. Compile step by step 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 kernel:

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

  • Compile uboot:

cd ~/proj/Firefly-RK3399/u-boot/
make rk3399_defconfig
make ARCHV=aarch64 -j8

  • Compile Android:

cd ~/proj/Firefly-RK3399/
source build/envsetup.sh
lunch  rk3399_firefly-userdebug
make -j8
./mkimage.sh

3.3.3. Packaged into unified firmware

After compilation, you can use Firefly official scripts to package into unified firmware, execute the following command：

./FFTools/mkupdate/mkupdate.sh -l rk3399_firefly-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

It is also very simple to package the unified firmware update.img under Windows. Copy the generated files to the rockdev \ Image directory of AndroidTool, and then run the mkupdate.bat batch file under the rockdev directory to create update.img and store it in rockdev \ Image directory.

3.4. 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-rk3399_firefly /. The following lists the image files used by general firmware:

  • boot.img ：The initial file image of Android is 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 of emergency mode.

  • parameter.txt ：emmc partition information

  • recovery.img ：First aid mode image。

  • resource.img ：The resource image contains the boot tree and the device tree information of the kernel.

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

  • trust.img ：Hibernation and wake-up related files

  • rk3399_loader_v1.08.106.bin ：Loader file

  • uboot.img ：uboot file

Please refer to Upgrade the firmware article to program partition image file.

If you are using a Windows system, copy the above image file to the rockdev \ Image directory of the 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 configuration. No need to modify the file path.

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

note:
When using the upgrade tool to upgrade the industry version of the firmware, if the original tvbox version of the firmware is burned, you need to short-circuit emmc or flash erase first. And pay attention to use the matching upgrade tool

Please refer to Instructions for writing with USB cable (important)

3.5. Other Android versions