Android Build and Flash

This page summarizes the development environment, source installation, build process, and flashing flow for X30 Android 8.1.

Development Environment

Full Android source compilation requires a high-performance PC. The manual recommends installing Linux directly rather than relying on a virtual machine. Ubuntu 14.04 64-bit is used as the example.

Common tools:

sudo apt-get install meld
sudo apt-get install minicom
sudo apt-get install picocom

Serial tools:

sudo minicom -s
sudo picocom -b 115200 /dev/ttyUSB0

Android Source Dependencies

sudo apt-get update
sudo apt-get install git-core gnupg flex bison gperf libsdl-dev libwxgtk2.8-dev build-essential zip curl libncurses5-dev zlib1g-dev genromfs u-boot-tools libxml2-utils texinfo mercurial subversion whois
sudo apt-get install lsb-core libc6-dev-i386 g++-multilib lib32z1-dev lib32ncurses5-dev

PX30 Android 8 requires JDK 8. The manual uses java-8-openjdk-amd64.tar.bz2 from the cloud-disk resource:

sudo tar xjf java-8-openjdk-amd64.tar.bz2 -C /usr/lib/jvm
export PATH=/usr/lib/jvm/java-8-openjdk-amd64/bin:$PATH

Toolchain

The cross-compilation toolchains are included in the source package:

prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/
prebuilts/gcc/linux-x86/aarch64/aarch64-linux-Android-4.9/

Get Android Source

From cloud disk:

tar xjf px30_oreo.tar.bz2
cd px30_oreo
git checkout .

Example path:

DVD_X30/source/px30_oreo.tar.bz2

Update source:

git remote add gitlab http://gitlab.com/9tripod/px30_oreo.git
git pull gitlab

From GitLab:

git clone http://gitlab.com/9tripod/px30_oreo.git

Build Android

Build as a normal user. Images are generated under out/release.

U-Boot

./mk -u

Outputs:

MiniLoaderAll.bin
uboot.img
trust.img

Kernel

./mk -k

Outputs:

kernel.img
resource.img

Android filesystem

./mk -s

Common outputs:

MiniLoaderAll.bin
uboot.img
trust.img
resource.img
kernel.img
boot.img
misc.img
recovery.img
system.img
vendor.img
oem.img
update-Android.img

Help

./mk -h

Option	Description
-u	Build U-Boot
-k	Build kernel
-s	Build Android filesystem
-U	Package all images into update-Android.img
-j=	Set parallel build jobs, for example -j=20
-a	Equivalent to ./mk -u -k -s -U

Windows Flashing

1. Extract RKTools.rar.
2. Run DriverInstall.exe under SDK/RKTools/windows/Release_DriverAssitant.
3. Open RKTools/windows/AndroidTool/AndroidTool_Release_v2.58/AndroidTool.exe.
4. Select update-Android.img in the firmware-upgrade tab.
5. Hold RECOVERY, connect Micro USB and 12V DC power.
6. When the tool detects a LOADER device, start upgrade.

Linux Flashing

Tool path:

RKTools/linux/Linux_Upgrade_Tool_v1.2

Example:

sudo ./upgrade_tool
Rockusb> uf update.img

Or flash partitions directly:

sudo upgrade_tool di -k kernel.img
sudo upgrade_tool di -s system.img
sudo upgrade_tool di resource resource.img
sudo upgrade_tool di -r recovery.img
sudo upgrade_tool uf update.img

TF Card Upgrade

The TF-card upgrade section in the Android manual is reference material. The typical flow is to use SD_Firmware_Tool.exe, select firmware, PCBA test, or SD boot mode, then boot from the prepared card.