Skip to end of banner
Go to start of banner

Run Android Automotive in Xen virtual machine on the AVA Platform

Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 3 Next »

Introduction

This document outlines the steps of setting up and running Android Automotive images on Linaro’s Trusted Reference Stack (TRS) using prebuilt images. When completed, you will be able to boot the Android Automotive OS (AAOS) image in a DomU (aka VM) running on top of the Xen Hypervisor using TRS in the Dom0. The AAOS image will utilize the AVA platform's frame buffer (unaccelerated) and use VirtIO serial device to enable keyboard and mouse.

If interested in building from source please refer to the following documents [1][2] for details.

Prerequisites

You will need the following to run this demo

  • AVA Platform

  • Display connected to the VGS?? interface

  • Enough disk space

  • Linux desktop (x86 is fine)

Prebuilt images

Prebuilt images can be pre-downlaoded as follows:

Flash the TRS image

TRS image can be flashed on either an NVME or a USB stick. It’s recommended to use the shell script below (select the device you wish to flash to):

$ wget https://people.linaro.org/~leo.yan/arm_blueprint/aaos_on_xen/trs-image-trs-qemuarm64.wic
$ sh flash_trs.sh /dev/nvmeXn1  # for flashing TRS on NVME block device
$ sh flash_trs.sh /dev/sdX      # for flashing TRS on USB stick

This script extends the root file system partition to the end of the device to provide sufficient disk space for storing the Android Automotive OS image. 

#!/bin/bash

DEV=$1

sudo parted ${DEV} print

echo "Please confirm if the partition is right?"
while : ; do
	read -n 1 k <&1
	if [[ $k = y ]] ; then
		printf "\n"
		break
	else
		printf "\nExit\n"
		exit 0
	fi
done

echo "Copy image to ${DEV}"
sudo dd bs=4M if=./trs-image-trs-qemuarm64.wic of=$DEV status=progress && sync

sudo growpart $DEV 2
sudo /home/leoy/Downloads/e2fsprogs-1.47.0/e2fsck/e2fsck -f "${DEV}p2"
sudo /home/leoy/Downloads/e2fsprogs-1.47.0/resize/resize2fs "${DEV}p2"
## Add comment
#sudo /home/leoy/Downloads/e2fsprogs-1.47.0/e2fsck/e2fsck -f "${DEV}2"
#sudo /home/leoy/Downloads/e2fsprogs-1.47.0/resize/resize2fs "${DEV}2"
sudo parted ${DEV} print

Note 1: The shell script requires the e2fsck and resize2fs utilities to be at least version 1.47.0 or newer. if not available, please download the e2fsprogs source and build it and install it.

Note 2: Because USB stick and NVME device have different block naming, you need to comment out lines 23 and 24, and enable lines 25 and 26.

Run Android Automotive in a Xen virtual machine

Once TRS system booted up, you need to download Android Cuttlefish image and uncompress it into a specific folder (eg. /home/leoy/android-cf-mainline/cf ). Due to the overlay images contains the absolute path. The commands are:

# wget https://people.linaro.org/~leo.yan/arm_blueprint/aaos_on_xen/cuttlefish.tgz
# wget https://people.linaro.org/~leo.yan/arm_blueprint/aaos_on_xen/aaos_vm.cfg
# wget https://people.linaro.org/~leo.yan/arm_blueprint/aaos_on_xen/u-boot.bin
# mkdir -p /home/leoy/android-cf-mainline/cf/
# tar zxvf cuttlefish.tgz -C /home/leoy/android-cf-mainline/cf/

Launch Xfce4 windows manager:

# startxfce &

Run AAOS in a Xen virtual machine:

# export DISPLAY=:0
# xl -vvv create aaos_vm.cfg -c

[1] Xen: maintenance Xen and QEMU repos for TRS
[2] Xen: porting Android Cuttlefish on Xen Virtual Machine

  • No labels