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android71

Last modified by Administrator on 2018/10/21 17:06

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Android 7.1

Android is a mobile operating system (OS) based on the Linux kernel and currently developed by Google.
https://www.android.com/

This document describes installation procedure for binary Freescale Android 7.1 image (i.MX6 REX PRO/ULTRA module).
Supported peripheral:

i.MX6 REX PRO/ULTRA module
HDMI/LVDS output
USB flash as external storage
SD card as external storage
Video playback
Audio playback
WiFi
Ethernet

Android 7.1

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

Source code

Documentation for android provided by NXP
https://www.voipac.com/downloads/imx/iMX6_Rex/Module/src/android/7_1/android_N7.1.1_1.0.0_docs.tar.gz

Source code with patches provided by NXP
https://www.voipac.com/downloads/imx/iMX6_Rex/Module/src/android/7_1/android_N7.1.1_1.0.0_source.tar.gz

Voipac patches that add support for REX targets
https://www.voipac.com/downloads/imx/iMX6_Rex/Module/src/android/7_1/android_N7.1.1_1.0.0_source_voipac.tar.gz

How to apply voipac patches

tar xvzf android_N7.1.1_1.0.0_source_voipac.tar.gz -C ~/workdir/imx6/android/

cd ~/workdir/imx6/android/a711-rex/device/
tar xvzf ~/workdir/imx6/android/android_N7.1.1_1.0.0_source_voipac/device_vpac-proprietary_voipac.tar.gz -C .

cd ~/workdir/imx6/android/a711-rex/device/fsl/
git apply ~/workdir/imx6/android/android_N7.1.1_1.0.0_source_voipac/device_fsl_voipac.patch

cd ~/workdir/imx6/android/a711-rex/bootable/bootloader/uboot-imx
git apply ~/workdir/imx6/android/android_N7.1.1_1.0.0_source_voipac/bootable_bootloader_uboot-imx_voipac.patch

cd ~/workdir/imx6/android/a711-rex/kernel_imx
git apply ~/workdir/imx6/android/android_N7.1.1_1.0.0_source_voipac/kernel_imx_voipac.patch

cd ~/workdir/imx6/android/a711-rex/hardware/imx
git apply ~/workdir/imx6/android/android_N7.1.1_1.0.0_source_voipac/hardware_imx_voipac.patch

cd ~/workdir/imx6/android/a711-rex/hardware/broadcom/wlan
git apply ~/workdir/imx6/android/android_N7.1.1_1.0.0_source_voipac/hardware_broadcom_wlan_voipac.patch

Build name options

imx6tinyrex - i.MX6 TinyREX PRO/MAX/MAX4G/ULTRA
imx6rex - i.MX6 REX PRO/ULTRA
imx6openrex - i.MX6 OpenREX MAX/MAX4G/ULTRA

Build Type options

user - Production ready image, no debug
userdebug - Provides image with root access and debug, similar to "user"
eng - Development image with debug tools

Building command

cd ~/workdir/imx6/android/a711-rex
source build/envsetup.sh

lunch imx6tinyrex-userdebug
make 2>&1 | tee build-log-imx6tr.txt

lunch imx6rex-userdebug
make 2>&1 | tee build-log-imx6r.txt

lunch imx6openrex-userdebug
make 2>&1 | tee build-log-imx6or.txt

Output directory

cd ~/workdir/imx6/android/a711-rexout/
ls -la out/target/product/

drwxrwxr-x 6 user user 4096 7 24 07:19 .
drwxrwxr-x 4 user user 4096 8 30 2017 ..
drwxrwxr-x 11 user user 4096 8 22 21:34 imx6openrex
drwxrwxr-x 11 user user 4096 7 28 20:19 imx6rex
drwxrwxr-x 11 user user 4096 6 18 2017 imx6tinyrex
drwxrwxr-x 11 user user 4096 5 1 2017 sabresd_6dq

Binary files

https://www.voipac.com/downloads/imx/iMX6_Rex/Module/bin/android/7_1/

Preparing SD card

mkdir -pv ~/workdir/imx6/android/bin/7_1/rex/
cd ~/workdir/imx6/android/bin/7_1/rex
wget -r -nH -nd -np -R index.html* https://www.voipac.com/downloads/imx/iMX6_Rex/Module/bin/android/7_1/
chmod a+x vpac-sdcard-partition.sh

SD card partition layout

This will be the final SD card partitioning layout at the end of installation procedure.

Partition type/index	Name	Start offset	Size	File system	Content
N/A	BOOT Loader	1 KB	1 MB	N/A	bootloader
Primary 1	Boot	8 MB	32 MB	boot.img format, kernel + ramdisk	boot.img
Primary 2	Recovery	Follow Boot	32 MB	boot.img format, kernel + ramdisk	recovery.img
Logic 5 (Extended 3)	SYSTEM	Follow Recovery	1536 MB	EXT4. Mount as / system	system.img (Android system files under /system/ dir)
Logic 6 (Extended 3)	CACHE	Follow SYSTEM	512 MB	EXT4. Mount as / cache	Android cache for image store of OTA.
Logic 7 (Extended 3)	Device	Follow CACHE	8 MB	EXT4. Mount as / vender	To Store MAC address files
Logic 8 (Extended 3)	Misc	Follow Device	6 MB	N/A	For recovery store bootloader message, reserve
Logic 9 (Extended 3)	DATAFOOTER	Follow Misc	2 MB	N/A	For crypto footer of DATA partition encryption bootloader message, reserve.
Primary 4	DATA	Follow Misc	Total - Other images	EXT4. Mount at /data	Application data storage for the system application and for internal media partition in /mnt/sdcard/ dir.

IMX6 Pro module

sudo ./vpac-sdcard-partition.sh -f imx6rex pro /dev/mmcblkX

#or

sudo ./vpac-sdcard-partition.sh -f imx6rex pro /dev/sdX

IMX6 Ultra module

sudo ./vpac-sdcard-partition.sh -f imx6rex ultra /dev/mmcblkX

#or

sudo ./vpac-sdcard-partition.sh -f imx6rex ultra /dev/sdX

Setup

Bootloader

Android bootloader is stored at SD card. Linux bootloader stored in SPI flash must be configuration to chainload android bootloader.

Chainloading SD card bootloader

setenv bootcmd "bmode esdhc3"
saveenv
reset

Setting HDMI video output

setenv bootargs "console=ttymxc0,115200 init=/init video=mxcfb0:dev=hdmi,if=RGB24,bpp=32 video=mxcfb1:off vmalloc=128M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=320M"
saveenv

Setting LVDS video output

setenv bootargs "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,edt570,if=RGB666 video=mxcfb1:off vmalloc=128M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=320M"
saveenv

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Created by Administrator on 2017/06/20 18:22