Build and Run Android N Source Ccode on NXP SABRESD platform

Daniel Chiu
2017/7/3
Mobile: +886-928-282-503
daniel.chiu@sacsystem.com.tw
Build and Run Android N Source Code
for NXP’s i.MX 6Q SABRE-SD Platform

Preface
The document describes how to build Android Nougat 7.1 platform for the
i.MX6 and i.MX7 series SABRE devices. It provides instructions for
• Setting up a Linux build environment
• Downloading, patching, and building the software components that
create the Android system image
• Copying the images to a boot media
• Hardware/software configurations for programming the boot media and
running the images

Agenda
1) Setting up your computer
2) Getting Android source code (AOSP)
3) Getting kernel and U-Boot source code
4) Apply all the i.MX Android patch
5) Building Android images
6) Programming images with MFGTool
7) Booting

Setting up your computer: 64-bit environment
Ubuntu 14.04 LTS, 64-bit
• 16GB RAM
• 300GB disk space
• http://ftp.ubuntu-tw.org/mirror/ubuntu-releases/14.04.5/ubuntu-14.04.5-
desktop-amd64.iso

Setting up your computer: JDK
OpenJDK8 Packages

Setting up your computer: JDK (cont.)
OpenJDK8 Installation
1) Download openjdk-8-jre-headless_8u45-b14-1_amd64.deb
2) Download openjdk-8-jre_8u45-b14-1_amd64.deb
3) Download openjdk-8-jdk_8u45-b14-1_amd64.deb
4) $ sudo apt-get update
5) $ sudo dpkg -i openjdk-8-jre-headless_8u45-b14-1_amd64.deb
6) $ sudo dpkg -i openjdk-8-jre_8u45-b14-1_amd64.deb
7) $ sudo dpkg -i openjdk-8-jdk_8u45-b14-1_amd64.deb
8) $ sudo apt-get -f install
9) $ java –version

$ sudo dpkg -i openjdk-8-jre-headless_8u45-b14-1_amd64.deb

$ sudo dpkg -i openjdk-8-jre_8u45-b14-1_amd64.deb

$ sudo dpkg -i openjdk-8-jdk_8u45-b14-1_amd64.deb

Setting up your computer: Required package on
the Android website
// Installing required packages for Android(Ubuntu 14.04)
$ 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 ccache libgl1-mesa-dev
libxml2-utils xsltproc unzip

Setting up your computer: Additional requested
packages
$ sudo apt-get install uuid uuid-dev zlib1g-dev liblz-dev liblzo2-2 liblzo2-
dev lzop git-core curl u-boot-tools mtd-utils android-tools-fsutils
libncurses5-dev

Getting Android source code
• Installing Repo tool
$ cd ~
$ mkdir bin
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
• Create working directory
$ mkdir android_7.1.1_r13 && cd android_7.1.1_r13
• Configure git with your real name and email address
$ git config --global user.name "Your Name"
$ git config --global user.email “you@example.com”
• Check out a branch
$ ~/bin/repo init -u https://android.googlesource.com/platform/manifest -b
android-7.1.1_r13
$ ~/bin/repo sync # This command loads most needed repos.
Therefore, it can take several hours to load

Getting Android source code (cont.)

Getting kernel and U-Boot source code
Get N7.1.1_1.0.0 kernel source code from Freescale open source git:
$ cd ~/android_7.1.1_r13
$ git clone git://git.freescale.com/imx/linux-imx.git kernel_imx
$ cd kernel_imx
$ git checkout n7.1.1_1.0.0-ga

Getting kernel and U-Boot source code (cont.)
Clone the U-Boot git repository from the open source git:
$ cd ~/android_7.1.1_r13/bootable
$ mkdir bootloader && cd bootloader
$ git clone git://git.freescale.com/imx/uboot-imx.git uboot-imx
$ cd uboot-imx
$ git checkout n7.1.1_1.0.0-ga

Patch standard features code package
Download i.MX 6 Android 7.1.1 Nougat BSP source code from the link
(need to sign in NXP web site):
http://www.nxp.com/products/software-and-tools/software-development-tools/i.mx-software-
and-tools/i.mx-6series-i.mx-7series-software-and-development-tool-resources:IMX_SW

Patch standard features code package (cont.)
Save the “android_N7.1.1_1.0.0_source.tar.gz” file in the local folder. For
example: /opt/

Unpacking the Android release package
$ cd /opt
(or any other directory where the android_N7.1.1_1.0.0_source.tar.gz file is placed)
$ tar xzf android_N7.1.1_1.0.0_source.tar.gz

Apply all the i.MX Android patches by performing the following steps:
$ source /opt/android_N7.1.1_1.0.0_source/code/N7.1.1_1.0.0/and_patch.sh
$ help
$ c_patch /opt/android_N7.1.1_1.0.0_source/code/N7.1.1_1.0.0/ imx_N7.1.1_1.0.0

Done with the patch

Building Android images
Argument <Build name>-<Build type> string for the build configuration
command lunch
• The Build Name is the Android device name found in the directory
~/myandroid/device/fsl/

Building Android images (cont.)
Android build steps are as follows:
$ source build/envsetup.sh
$ lunch sabresd_6dq-eng
$ make BUILD_TARGET_DEVICE=emmc -j8 2>&1 | tee imx6q_android-7.1.1.1_r13_eng.log

Compiling with Jack – Out of memory error
$ jack-admin stop-server
$ vi ~/android_7.1.1_r13/prebuilts/sdk/tools/jack-admin
Add –Xmx option in the JACK_SERVER_COMMAND for Host memory size limitation
$ jack-admin start-server

The following outputs are generated by default in
WORKING_Directory/out/target/product/sabresd_6dq:
• root/: root file system (including init, init.rc). Mounted at /.
• system/: Android system binary/libraries. Mounted at /system.
• data/: Android data area. Mounted at /data.
• recovery/: root file
• boot-imx6q.img: composite image for i.MX 6Dual/6Quad SABRE-SD, which includes the kernel
zImage, ramdisk, board's device tree binary, and boot parameters.
• ramdisk.img: ramdisk image generated from "root/". Not used directly.
• system.img: EXT4 image generated from "system/". It can be programmed to "SYSTEM" partition on
SD/eMMC card with "dd".
• recovery-imx6q.img: EXT4 image for i.MX 6Dual/6Quad SABRE-SD, which is generated from
"recovery/". Can be programmed to the "RECOVERY" partition on SD/eMMC card with "dd".
• u-boot-imx6q.imx: U-Boot image with no padding for i.MX 6Dual/6Quad SABRE-SD.

An example for the SABRE Board for Smart Devices i.MX 6Dual/Quad is:
$ cd ~/WORKING_DIRECTORY
$ source build/envsetup.sh
$ lunch sabresd_6dq-user
$ make
To create Android platform over-the-air, OTA, and package, the following
make target is specified:
$ make otapackage
For more Android platform building information, see
source.android.com/source/building.html.

Programming images with MFGTool
The images needed to create an Android system on MMC/SD are listed
below:
‧ U-Boot image: u-boot.imx
‧ boot image: boot.img
‧ Android system root image: system.img
‧ Recovery root image: recovery.img

Programming images with MFGTool (cont.)
Storage partitions:

Download MFGTool from the link (need to sign in NXP web site):
http://www.nxp.com/products/software-and-tools/software-development-tools/i.mx-software-
and-tools/i.mx-6series-i.mx-7series-software-and-development-tool-resources:IMX_SW

Android Quick Start Guide (AQSUG) for a detailed description of MFGTool.

Copy the image files to the
MFGTool-Dir/Profiles/Linux/OS/Firmware/files/android/sabresd path
$ cd android_7.1.1_r13/out/target/product/sabresd_6dq/
$ cp *imx6q.im* ~/android_N7.1.1_1.0.0_tools/mfgtools/Profiles/Linux/OS
Firmware/files/android/sabresd/
$ cp system.img ~/android_N7.1.1_1.0.0_tools/mfgtools/Profiles/Linux/OS
Firmware/files/android/sabresd/

SABRE SD Platform for i.MX6 Series

Main interfaces of i.MX6 SABRE SD board

Main interfaces of i.MX6 SABRE SD board (Cont.)

i.MX6 SABRE Platform Block Diagram

Build and Run Android N Source Ccode on NXP SABRESD platform

Build and Run Android N Source Ccode on NXP SABRESD platform

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