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Android 9 Pie device configuration for Raspbery Pi 3 Model B & B+

Setup build environment

The build host is x86_64 platform run ubuntu-16.04 (refer:

  1. Install JDK
$ sudo apt-get update
$ sudo apt-get install openjdk-8-jdk
  1. Install other tools
$ sudo apt-get install git-core gnupg flex bison gperf build-essential zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev libgl1-mesa-dev libxml2-utils xsltproc unzip
  1. Install repo command to download Android 9 Pie project source code
$ mkdir ~/bin
$ PATH=~/bin:$PATH
$ curl -sSL '' | base64 -d > ~/bin/repo
$ chmod a+x ~/bin/repo

Download source code

  1. Download The Android 9 Pie official source code The source code can download either from or Run following command to download from
$ repo init -u git:// -b android-9.0.0_r8 --repo-url=git://
  1. Download Raspbery Pi 3 device configuration files
$ mkdir -pv device/brobwind
$ git clone git:// device/brobwind/rpi3
  1. Add local manifest file
$ mkdir -p .repo/local_manifests
$ ln -sv ../../device/brobwind/rpi3/local_manifest.xml .repo/local_manifests/
  1. Downloading
$ repo sync

Apply patch to Android framework

The following patch must be applyed:

diff --git a/services/core/java/com/android/server/wm/ b/services/core/java/com/android/server/wm/
index cd8fdbf..6918bc3 100644
--- a/services/core/java/com/android/server/wm/
+++ b/services/core/java/com/android/server/wm/
@@ -769,7 +769,7 @@ class DisplayContent extends WindowContainer<DisplayContent.DisplayChildWindowCo
         // appropriately arbitrary number. Eventually we would like to give SurfaceFlinger
         // layers the ability to match their parent sizes and be able to skip
         // such arbitrary size settings.
-        mSurfaceSize = Math.max(mBaseDisplayHeight, mBaseDisplayWidth) * 2;
+        mSurfaceSize = (int)(Math.max(mBaseDisplayHeight, mBaseDisplayWidth) * 1.4);
         final SurfaceControl.Builder b = mService.makeSurfaceBuilder(mSession)
                 .setSize(mSurfaceSize, mSurfaceSize)

Configure build environment

$ . build/
$ lunch rpi3-eng

Build target

$ m -j

It will take about 1 hour 32 minutes for CPU: intel I5 8500T; RAM: 8G DDR42666; HDD: 1TB

Then you will get following images in the out/target/product/rpi3 folder:

  1. rpiboot.img
  2. boot.img
  3. system.img
  4. vendor.img
  5. userdata.img

Flash images

  1. Flash images to sdcard directly

It requires sgdisk and gdisk to create GPT partition table.

$ sudo OUT=${OUT} device/brobwind/rpi3/boot/ /path/to/sdcard

After executing the command, it will also install following images to sdcard:

  • out/target/product/rpi3/rpiboot.img
  • out/target/product/rpi3/boot.img
  • out/target/product/rpi3/system.img
  • out/target/product/rpi3/vendor.img
  • device/brobwind/rpi3/boot/images/oem_bootloader_a.img
  • device/brobwind/rpi3/boot/images/zero_4k.bin
  1. Using fastboot command

Please refer to

For detail info, please refer:



The Android 9 Pie device configuration for Raspberry Pi 3 Model B & B+






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