====== Compile & Flash Android12.0 Firmware for POC's RK3588 SSOM ======

===== Prepare environment =====

It is for both PX30 and RK3588
Compiling Android requires high machine configuration:
  * 64-bit CPU
  * 16GB physical memory + swap memory
  * 250GB of free disk space
The official recommendation is the Ubuntu 18.04 operating system.

The initialization of the compilation environment can refer to
[[http://source.android.com/source/initializing.html]]

Ubuntu 16.04 and 18.04 package installation reference:
    $ sudo apt-get update
    $ sudo apt-get install git gnupg flex bison gperf libsdl1.2-dev libesd-java \
    squashfs-tools build-essential zip unzip curl libncurses5-dev zlib1g-dev \
    pngcrush schedtool libgl1-mesa-dev libxml2 libxml2-utils xsltproc lzop \
    libc6-dev schedtool g++-multilib lib32z1-dev lib32ncurses5-dev lib32readline-dev \
    gcc-multilib libswitch-perl libssl-dev device-tree-compiler liblz4-tool python-pyelftools \
    python3-pyelftools x11proto-core-dev libx11-dev fontconfig -y
Install repo for source code sync.
    $ mkdir -p ~/.bin
    $ PATH="${HOME}/.bin:${PATH}"
    $ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/.bin/repo
    $ chmod a+rx ~/.bin/repo
**☛ //__Note:__//**

//Open file “~/.bin/repo” with any editor on Ubuntu.//

//Check to see if the first line of the repo file looks like “#!/usr/bin/env python3”.
If not, please modify it//

===== Download and Decompress source code =====

Android12.0 SDK source code for  RK3588 is provided by POC, packaged as follows

Downloaded from the link [[https://49.gigafile.nu/0718-10007afffdfe5db3c7b96a520f423bfe]]

File named: gigafile-0718-10007afffdfe5db3c7b96a520f423bfe.zip
    $ mkdir -p <Your_project>
    $ cd <Your_project>
    $ unzip <Where_the_file_is_stored>/gigafile-0718-10007afffdfe5db3c7b96a520f423bfe.zip
    $ cat rk3588_a12-20240319.tar.bz2-016.aa rk3588_a12-20240319.tar.bz2-011.ab rk3588_a12-20240319.tar.bz2-007.ac rk3588_a12-20240319.tar.bz2-003.ad rk3588_a12-20240319.tar.bz2-014.ae rk3588_a12-20240319.tar.bz2-008.af rk3588_a12-20240319.tar.bz2-009.ag rk3588_a12-20240319.tar.bz2-013.ah rk3588_a12-20240319.tar.bz2-010.ai rk3588_a12-20240319.tar.bz2-015.aj rk3588_a12-20240319.tar.bz2-002.ak rk3588_a12-20240319.tar.bz2-006.al rk3588_a12-20240319.tar.bz2-004.am rk3588_a12-20240319.tar.bz2-005.an rk3588_a12-20240319.tar.bz2-012.ao rk3588_a12-20240319.tar.bz2-001.ap rk3588_a12-20240319.tar.bz2-017.aq | tar xjv
Replace the source code to make Android12.0 work on POC's RK3588

Step 1: Copy the file "RK3588_Android12_Fixed.zip" to Ubuntu

Step 2: Extract it

Step 3: Copy and replace everything in the folder "RK3588_Android12_Fixed" to <Your_project>/t923

===== Compile source code =====

1.	If you want to compile them all, do the following 
    $ cd <Your_project>/t923
    $ source build/envsetup.sh
    $ lunch rk3588_s-userdebug
    $ ./build.sh -AUCKu
2.	If compiling each one, do the following
KERNEL
    $ cd <Your_project>/t923/kernel
    $ make ARCH=arm64 rockchip_defconfig android-11.config
    $ make ARCH=arm64 BOOT_IMG=../rockdev/Image- rk3588_s/boot.img rk3588-chinchilla-carrier.img -j24

U-BOOT
    $ cd <Your_project>/t923/u-boot
    $ ./make.sh rk3588

ANDROID
    $ cd <Your_project>/t923
    $ source build/envsetup.sh
    $ lunch rk3588_s-userdebug
    $ ./build.sh -Au

3.	After successful compilation it has the following structure

{{:products:ssom_rk3588_v2:rk3588_dir_struct.png?400|}}