AOSP 101

aosp-101.md

There are 3 steps:

• Setup & Download
• Build
• Flash

Before you start, please be calm in any situation :v.

Step 1, Setup & Download:

• At least 250GB of free disk space to check out the code and an extra 150 GB to build it. If you conduct multiple builds, you need additional space.

• You need repo tool to download the source:

  1/ make sure that you have a bin/ directory in your home directory

  mkdir ~/bin 
  PATH=~/bin:$PATH
  

  2/ dowload the Repo Launcher and ensure that it's executable

  curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
  chmod a+x ~/bin/repo
  

• Download:

  1/ create an empty directory (aosp or something like that)

  mkdir WORKING_DIRECTORY
  cd WORKING_DIRECTORY
  

  2/ configure Git with your real name and email address

  git config --global user.name "Your Name"
  git config --global user.email "you@example.com"
  

  3/ Run repo init and sync the source

  repo init -u https://android.googlesource.com/platform/manifest -b android-10.0.0_r35
  repo sync
  

  4/ Dowload Pixel 4 driver https://developers.google.com/android/drivers, please select the driver follow the build name above, this case is QQ2A.200501.001.B2.

  • Unzip the downloaded file in the root directory of the code and you will get a sh file, run through the terminal xxx.sh

  tar zxvf qcom-flame-qd1a.190821.007-54118c11.tgz -C./
  tar xvf google_devices-flame-qd1a.190821.007-2a6a603e.TAR
  

  • After decompression, execute the sh file:

  ./extract-qcom-flame.sh
  ./extract-google_devices-flame.sh
  

  • Agree user agreement is required here, you only need to hold down the down key, you can swipe to the end and enter I ACCEPT.

Step 2, Build the source.

• Install JSK 1.8

  sudo apt-get install openjdk-8-jdk
  

• set up the environment

  source build/envsetup.sh
  

• run lunch command with the target (up to the device), we use aosp_flame-userdebug for pixel 4.

  lunch aosp_flame-userdebug
  

• compile the code, make -jN, N is the number of parallel tasks.

  m -j4
  

Step 3, Flashing. You need to connect to the phone this step.

• We will use fastboot and adb tool for this step. If you already have android sdk, please access those tools in Android/Sdk/platform-tools. Otherwise, please install by using this script

  make fastboot adb
  

• Unlock your device

  1/ Enable OEM unlocking in developer option, please ask me if you don't know where that screen is

  2/ Reboot into the bootloader and use fastboot to unlock it

  fastboot flashing unlock
  

• Flashing your device:

  1/ Using this script to place the device in fastboot mode

  adb reboot bootloader
  

  2/ After the device is in fastboot mode, you need to set the env variable (ANDROID_PRODUCT_OUT) to the build output

  export ANDROID_PRODUCT_OUT=~/AOSP_DIRECTORY/out/target/product/flame
  

  then run

  fastboot flashall -w