Lab5 - Configure and Build Android on Beagle Board

 Install following packages as below.

$ apt-get install git-core bison sun-java5-jdk flex g++ zlib1g-dev

$ apt-get install  libx11-dev libncurses5-dev gperf uboot-mkimage

Sun JDK version 1.5 or 5 is deleted from Ubuntu 10.4 and 9.10 repositories and the version 6 has been replaced. The easiest way to install Sun JDK 5 version is add its repository from Ubuntu 9.04 to the list of repositories in 9.10 and 10.04. For this purpose, follow the steps as below.

- Open /etc/apt/sources.list with a text editor like gedit:

$ sudo gedit /etc/apt/sources.list

- Add the following lines to the end of the file then save it and close:

## For sun-java5-jdk

deb http://ir.archive.ubuntu.com/ubuntu jaunty-updates main multiverse

- Update the packages lists and install sun-java5-jdk:

$ sudo aptitude update

$ sudo aptitude install sun-java5-jdk

(2) Android also uses its own repo script as a git front-end

$ mkdir -p ~/bin

$ cd ~/bin

$ wget http://android.git.kernel.org/repo

$ chmod +x repo

(3) We are also going to need a 2007q3 Toolchain from Code Sourcerys

$ cd

$ wget http://www.codesourcery.com/sgpp/lite/arm/portal/package1787/public/arm-none-linux-gnueabi/arm-2007q3-51-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2

$ cd /opt

$ sudo tar jxf arm-2007q3-51-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2

You could also get this toolchain from our website: 

$ cd

$ wget http://free-electrons.com/pub/demos/beagleboard/android/arm-2007q3-51-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.lzma

$ cd /opt

$ sudo tar --lzma -xf ~/arm-2007q3-51-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.lzma

$ mkdir ~/beagledroid

$ cd ~/beagledroid

$ repo init -u git://labs.embinux.org/repo/android/platform/beaglemanifest.git/

$ repo sync

Caution: This will take a lot of time, as this downloads and extracts 2.4 GB of data. On a fast workstation with a 500KB/s Internet connection, it took about 90 minutes. If your network doesn't let you use the git protocol, you can use snapshot available on http://free-electrons.com/pub/demos/beagleboard/android/:

$ cd ~

$ tar --lzma -xvf beagledroid-git-20090603.tar.lzma

I used a 2nd option which is much faster than 1st method.

(5) Building Android

$ make

If your workstation has multiple CPUs, you could save a lot of time by running multiple jobs in parallel:

$ make -j 4

On our machine, this took about 4 hours!

(6) Building the kernel

$ export CC_PATH=/opt/arm-2007q3/bin/arm-none-linux-gnueabi-

$ cd ~/beagledroid/kernel

$ ../vendor/embinux/support-tools/beagle_build_kernel.sh

(7) Copying the Android root file system

Android’s root file system is generated in ~/beagledroid/out/target/product/generic

$ cd ~/beagledroid/out/target/product/generic

$ mkdir ~/beagledroid/rootfs

$ cp -a root/* ~/beagledroid/rootfs/

$ cp -a system/* ~/beagledroid/rootfs/system/

$ cd ~/beagledroid/rootfs

$ sudo chown -R root.root .

$ sudo chmod -R a+rwX data system

$ sudo mkfs.ext3 /dev/sdb2

Remove and insert your card again. Your new partitions should be mounted automatically.

Copying data to the MMC/SD card

Start by copying the X-loader and U-boot on the first partition.

$ cd /media/beagleboot

$ wget http://free-electrons.com/pub/demos/beagleboard/android/MLO

http://free-electrons.com/pub/demos/beagleboard/android/u-boot.bin

$ cp ~/beagledroid/kernel/arch/arm/boot/uImage .

Now copy the Android root filesystem to the second partition (assuming it is mounted on/media/disk:

$ sudo rsync -a ~/beagledroid/rootfs/ /media/disk/

Finish by unmounting your MMC/SD partitions:

$ sudo umount /media/beagleboot

$ sudo umount /media/disk

In the U-boot prompt, make the board boot automatically on the MMC/SD card:

# setenv bootcmd 'mmc init;fatload mmc 0 80000000 uImage;bootm 80000000'

# saveenv

Now set the kernel command line arguments:

# setenv bootargs console=ttyS2,115200n8 noinitrd root=/dev/mmcblk0p2 video=omapfb.mode=dvi:1280x720MR-24@50 init=/init rootfstype=ext3 rw rootdelay=1 nohz=off androidboot.console=ttyS2

Type command as below on “beagleboard prompt” as below

# boot

Following snapshot shows Linux kernel prompt resides under Android.