DART-SD410 Android LL 1 1

From Variscite Wiki
DART-SD410 Android-LL-5.1.1 Developers Guide

Introduction

This WIKI describes how to build and deploy Android Lollipop Lollipop-5-1-1 on the DART-SD410. It is based on Qualcomm Android-LL-5.1.1.

Overview

The objective of this document is to guide DART-SD410 Android developers to obtain Android Lollipop sources, setting up host environment, compilation and deployment.

This document contains instructions for:

  • Hardware and software requirements.
  • Setup the hardware.
  • Setup the toolchain.
  • Download & build the sources.
  • Install the binaries on the DART-SD410 SOM.

Document Reference

This release is based on Qualcomm APQ8016_410C_LA.BR.1.2.4-01810-8x16.0_5.1.1_Lollipop_P2 release. Please refer to Qualcomm Developer Network before you start building.

Supported hardware and features

Feature Description
SOM support DART-SD410
Carrier Board support VAR-DT410CustomBoard
CPU Qualcomm - Snapdragon 410
Resque Image Resque Images set can be downloaded from FTP
eMMC up to 16GB
DDR size support configuration Up to 2G LPDDR3
SD-Card +
Wired Network 10/100 Mbps Ethernet
Wireless Network 802.11abg AP, & Wi-Fi
Bluetooth +
SPI +
I2C +
USB OTG Host and Device
Uarts x2
RTC +
Display HDMI: 1080P (On board DSI-to-HSMI bridge, 800x480 resolution)
LVDS (On board DSI-to-LVDS bridge, 800x480 resolution)
Audio Line In & Line out
Mono Speaker
Audio over HDMI
Camera IMX135 camera sensor. Board can be ordered separately at : sales@variscite.com

Hardware Requirements

DART-SD410 evaluation kit.

Host (PC) setup requirements

The host development environment for Android is based on Ubuntu, please install Ubuntu version 14.04 64bit LTS http://www.ubuntu.com/download/desktop At least 60GByte free space.

IMPORTANT

Do not use other Ubuntu releases, other than recommended above.

For 64-bit Ubuntu 14.04

The complete Android host requirments:  source.android.com/source/initializing.html Also you can refer to Software Build and Installation Guide, Linux Android.

The following command installs repo:

First:
$ sudo apt-get update
$ mkdir ~/bin
$ PATH=~/bin:$PATH
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo

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

Installing the OpenJDK

The master branch of Android in the Android Open Source Project (AOSP) requires Java 7. On Ubuntu, use OpenJDK. Be aware that you must use OpenJDK opposed to previous versions that used SUN Java.

Java 7: For the latest version of Android

$ sudo apt-get update
$ sudo apt-get install openjdk-7-jdk

Optionally, update the default Java version by running:

$ sudo update-alternatives --config java
$ sudo update-alternatives --config javac

Install fastboot and ADB

$ sudo add-apt-repository ppa:nilarimogard/webupd8
$ sudo apt-get update
$ sudo apt-get install android-tools-adb android-tools-fastboot

Obtain Variscite's BSP

Please download Android Board Support Package file from Variscite's FTP site.
Contact Variscite support for FTP credentials.

Unpack Variscite's Android Release Package

$ mkdir ~/dart-sd410
$ cd ~/dart-sd410
$ unzip ~/Downloads/variscite_bsp_vla.br_.1.2.4-01810-8x16.0-3.zip
$ cd source/

Build Android Images

The following commands will download the full Android release from different Git repositories and build the Android images. It may take a very long time depending on Internel connection, Build machine, and remote servers. The process may fail fetching the repositories, in this case it can be started again.

Change to Android top level directory.

$ chmod +x DB410c_build.sh
The file DB410c_build.sh can be adited and parameter $BUILD_MACHINE changed to follow the build machine. 
The best setting is number of threads of the CPU minus 2.
$ ./DB410c_build.sh

Flashing newly built images

The build process creates an out directory and puts all images in the following directory:
/out/target/product/msm8916_64/
The following image files are created:
emmc_appsboot.mbn - little kernel (uboot)
boot.img - kernel and dtb files
system.img - system folder
The images can be flashed one by one via fastboot.
In order to enter fastboot mode cycle the power or press Reset key with Back key pressed.

To flash the whole system

$ cd /out/target/product/msm8916_64/
$ fastboot.exe flash aboot emmc_appsboot.mbn
$ fastboot.exe flash persist persist.img
$ fastboot.exe flash userdata userdata.img
$ fastboot.exe flash system system.img
$ fastboot.exe flash recovery recovery.img
$ fastboot.exe flash boot boot.img

To flash kernel and dtbs

Sometimes the changes are done only to the android kernel, in this case there is no need to flash the whole system.
The kernel and dtb files are located in boot.img file.
Flashing it is enough

$ cd /out/target/product/msm8916_64/
$ fastboot.exe flash boot boot.img

To flash little kernel

Sometimes the changes are done only to the bootloader, in this case there is no need to flash the whole system.
The kernel and dtb files are located in emmc_appsboot.mbn file.
Flashing it is enough

$ cd /out/target/product/msm8916_64/
$ fastboot.exe flash aboot emmc_appsboot.mbn