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1 Overview

This document describes how to build Android Pie 9.0

platform for the i.MX 6 and i.MX 7 series devices. It provides

instructions for:

• Configuring a Linux

OS build machine.

• Downloading, patching, and building the software

components that create the Android™ system image.

• Building from sources and using pre-built images.

• Copying the images to boot media.

• Hardware/software configurations for programming the

boot media and running the images.

For more information about building the Android platform,

see source.android.com/source/building.html.

Preparation

The minimum recommended system requirements are as

follows:

• 16 GB RAM

• 300 GB hard disk

NXP Semiconductors

Document Number: AUG

User's Guide

Rev. P9.0.0_2.2.0-ga, 07/2019

Android™ User's Guide

Contents

1 Overview....................................................................1

2 Preparation................................ ................................ 1

3 Building the Android platform for i.MX...................2

4 Running the Android Platform with a

Prebuilt Image........................................................... 8

5 Programming Images.............................................. 12

6 Booting................................ ................................... 16

7 Android Platform Update........................................22

8 Customized Configuration............. ......................... 23

9 Revision History......................... ............................ 24

2.1 Setting up your computer

To build the Android source files, use a computer running the Linux OS. The Ubuntu 16.04 64bit version and openjdk-8-jdk

is the most tested environment for the Android Pie 9.0 build.

After installing the computer running Linux OS, check whether all the necessary packages are installed for an Android build.

See "Setting up your machine" on the Android website source.android.com/source/initializing.html.

In addition to the packages requested on the Android website, the following packages are also needed:

$ sudo apt-get install uuid uuid-dev

$ sudo apt-get install zlib1g-dev liblz-dev

$ sudo apt-get install liblzo2-2 liblzo2-dev

$ sudo apt-get install lzop

$ sudo apt-get install git-core curl

$ sudo apt-get install u-boot-tools

$ sudo apt-get install mtd-utils

$ sudo apt-get install android-tools-fsutils

$ sudo apt-get install openjdk-8-jdk

$ sudo apt-get install device-tree-compiler

$ sudo apt-get install gdisk

$ sudo apt-get install m4

$ sudo apt-get install libz-dev

NOTE

If you have trouble installing the JDK in Ubuntu, see How to install misc JDK in Ubuntu

for Android build.

Configure git before use. Set the name and email as follows:

• git config --global user.name "First Last"

• git config --global user.email "first.last@company.com"

2.2

Unpacking the Android release package

After you set up a computer running Linux OS, unpack the Android release package by using the following commands:

$ cd ~ # or any other directory you like

$ tar xzvf imx-p9.0.0_2.2.0-ga.tar.gz

Building the Android platform for i.MX

3.1 Getting Android source code (Android/kernel/U-Boot)

The i.MX Android release source code consists of three parts:

• NXP i.MX public source code, which is maintained in CodeAurora Forum repository.

• AOSP Android public source code, which is maintained in android.googlesource.com.

• NXP i.MX Android proprietary source code package, which is maintained in www.NXP.com.

To generate the i.MX Android release source code build environment, follow the steps below. Assume you had i.MX

Android proprietary source code package imx-p9.0.0_2.2.0-ga.tar.gz under the ~/. directory.

$ mkdir ~/bin

$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo

$ chmod a+x ~/bin/repo

$ export PATH=${PATH}:~/bin

$ source ~/imx-p9.0.0_2.2.0-ga/imx_android_setup.sh

Building the Android platform for i.MX

Android™ User's Guide, Rev. P9.0.0_2.2.0-ga, 07/2019

2 NXP Semiconductors

# By default, the imx_android_setup.sh script will create the source code build environment

in the folder ~/android_build

# ${MY_ANDROID} will be refered as the i.MX Android source code root directory in all i.MX

And

roid release documentation.

$ export MY_ANDROID=~/android_build

3.2 Building Android images

Building the Android image is performed when the source code has been downloaded (Section 3.1) and patched (Section

3.2).

Commands lunch <buildName-buildType> to set up the build configuration and make to start the build process are

executed.

The build configuration command lunch can be issued with an argument <Build name>-<Build type> string, such as lunch

sabresd_6dq-userdebug, or can be issued without the argument presenting a menu of selection.

The Build Name is the Android device name found in the directory ${MY_ANDROID}/device/fsl/. The following table lists

the i.MX build names.

Table 1. Build names

Build name Description

sabreauto_6q i.MX 6Quad/6DualLite/6QuadPlus SABRE-AI Board

sabresd_6dq i.MX 6Quad/6DualLite/6QuadPlus SABRE-SD Board and SABRE Platform

sabresd_6sx i.MX 6SoloX SABRE-SD Board

sabresd_7d i.MX 7Dual SABRE-SD Board

evk_7ulp i.MX 7ULP EVKB-SD Board

The build type is used to specify what debug options are provided in the final image. The following table lists the build types.

Table 2. Build types

Build type Description

user Production ready image, no debug

userdebug Production ready image similar with "user" but with root access and debug

tools

eng Development image with debug tools

Android build steps are as follows:

1. Change to the top level build directory.

$ cd ${MY_ANDROID}

2. Set up the environment for building. This only configures the current terminal.

$ source build/envsetup.sh

3. Execute the Android lunch command. In this example, the setup is for the production image of i.MX 6Quad SABRE

Board/Platform device with user type.

$ lunch sabresd_6dq-userdebug

4. Execute the make command to generate the image.

$ make 2>&1 | tee build-log.txt

Building the Android platform for i.MX

Android™ User's Guide, Rev. P9.0.0_2.2.0-ga, 07/2019

NXP Semiconductors 3

When the make command is complete, the build-log.txt file contains the execution output. Check for any errors.

For BUILD_ID & BUILD_NUMBER changing, update build_id.mk in your ${MY_ANDROID} directory. For details, see

the i.MX Android Frequently Asked Questions.

For i.MX 6DualLite SABRE-SD, i.MX 6Quad SABRE-SD, and i.MX 6QuadPlus SABRE-SD boards, the same build

configuration is used. They share the same kernel/system/recovery images with the exception of the U-Boot image. The

following outputs are generated by default in ${MY_ANDROID}/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 system when booting in "recovery" mode. Not used directly.

• dtbo-imx6q.img: Board's device tree binary for i.MX 6Quad 1 GHz SABRE-SD.

• dtbo-imx6q-ldo.img: Board's device tree binary for i.MX 6Quad 1.2 GHz SABRE-SD.

• dtbo-imx6qp.img: Board's device tree binary for i.MX 6QuadPlus 1 GHz SABRE-SD.

• dtbo-imx6qp-ldo.img: Board's device tree binary for i.MX 6QuadPlus 1.2 GHz SABRE-SD.

• dtbo-imx6dl.img: Board's device tree binary for i.MX 6DualLite SABRE-SD.

• vbmeta-imx6q.img: Android Verify boot metadata image for dtbo-imx6q.img.

• vbmeta-imx6q-ldo.img: Android Verify boot metadata image for dtbo-imx6q-ldo.img.

• vbmeta-imx6qp.img: Android Verify boot metadata image for dtbo-imx6qp.img.

• vbmeta-imx6qp-ldo.img: Android Verify boot metadata image for dtbo-imx6qp-ldo.img.

• vbmeta-imx6dl.img: Android Verify boot metadata image for dtbo-imx6dl.img.

• 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 6Quad 1 GHz SABRE-SD, which is generated from "recovery/". Can be

programmed to the "RECOVERY" partition on SD/eMMC card with "dd".

• recovery-imx6q-ldo.img: EXT4 image for i.MX 6Quad 1.2 GHz SABRE-SD, which is generated from "recovery/".

Can be programmed to the "RECOVERY" partition on SD/eMMC card with "dd".

• recovery-imx6qp.img: EXT4 image for i.MX 6QuadPlus 1 GHz SABRE-SD, which is generated from "recovery/". Can

be programmed to the "RECOVERY" partition on SD/eMMC card with "dd".

• recovery-imx6qp-ldo.img: EXT4 image for i.MX 6QuadPlus 1.2 GHZ SABRE-SD, which is generated from

"recovery/". Can be programmed to the "RECOVERY" partition on SD/eMMC card with "dd".

• recovery-imx6dl.img: EXT4 image for i.MX 6DualLite SABRE-SD, which is generated from "recovery/". Can be

programmed to the "RECOVERY" partition on SD/eMMC card with "dd".

• partition-table.img: GPT partition table image, used for 8 GB SD card.

• partition-table-14GB.img: GPT partition table image, used for 16 GB SD card.

• partition-table-28GB.img: GPT partition table image, used for 32 GB SD card.

• u-boot-imx6q.imx: U-Boot image with no padding for i.MX 6Quad 0.8/1 GHz SABRE-SD.

• u-boot-imx6q-ldo.imx: U-Boot image with no padding for i.MX 6Quad 1.2 GHz SABRE-SD.

• u-boot-imx6qp.imx: U-Boot image with no padding for i.MX 6QuadPlus 1 GHz SABRE-SD.

• u-boot-imx6qp-ldo.imx: U-Boot image with no padding for i.MX 6QuadPlus 1.2 GHz SABRE-SD.

• u-boot-imx6dl.imx: U-Boot image with no padding for i.MX 6DualLite SABRE-SD.

• u-boot-imx6dl-sabresd-uuu.imx: U-Boot image used by UUU for i.MX 6DualLite SABRE-SD. It is not flashed to

MMC.

• u-boot-imx6q-ldo-sabresd-uuu.imx: U-Boot image used by UUU for i.MX 6Quad 1.2 GHz SABRE-SD. It is not

flashed to MMC.

• u-boot-imx6q-sabresd-uuu.imx: U-Boot image used by UUU i.MX 6Quad 0.8/1 GHz SABRE-SD. It is not flashed to

MMC.

• u-boot-imx6qp-ldo-sabresd-uuu.imx: U-Boot image used by UUU for i.MX 6QuadPlus 1.2 GHz SABRE-SD. It is not

flashed to MMC.

• u-boot-imx6qp-sabresd-uuu.imx: U-Boot image used by UUU for i.MX 6QuadPlus 1 GHz SABRE-SD. It is not

flashed to MMC.

• vendor.img: Vendor image, which holds platform binaries, mounted at /vendor.

• boot.img: A composite image, which includes the kernel Image, ramdisk, and boot parameters.

Building the Android platform for i.MX

Android™ User's Guide, Rev. P9.0.0_2.2.0-ga, 07/2019

4 NXP Semiconductors

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