Cb3 Lubuntu-12.10-desktop Nand Installation 20131015-build

Cubietruck is the 3rd board of cubietech, which is also named
cubieboard3. The board features an Allwinner A20 ARM Cortex-A7 dual core
processor with Mali 400 MP2 graphics, 2GB of RAM, HDMI, Gigabit
Ethernet, WiFi, Bluetooth, and a microSD card slot. There’s nothing too
surprising in those specs, but here’s what sets this developer board
apart from a tablet with its screen ripped off. The Cubietruck has a
SATA 2.0 interface, 2 USB host ports, SPDIF, a headphone jack, IR port,
and 4 LED lights. It also has 54 extended pins including UART, PS2, and a
bunch of other options. Read more about cubietruck, please refer to here.

Lubuntu is a fast and lightweight operating system developed by a
community of Free and Open Source enthusiasts. The core of the system is
based on Linux and Ubuntu . Lubuntu uses the minimal desktop LXDE, and a
selection of light applications. It’s official site is lubuntu

The Cubie team have ported cubietruck to lubuntu-12.10-desktop, here is a
guide for installing lubuntu-12.10-desktop to cubietruck nandflash.

wget http://dl.cubieboard.org/software/a20-cubietruck/lubuntu/ct-lubuntu-nand-v1.00/ct-lubuntu-desktop-20131026/lubuntu-desktop-nand.img.gz gzip -d lubuntu-desktop-nand.img.gz

To flash the image to cubietruck board, you need to install phoenixsuit on your labtop. Please refer to the Installation Guide

Here is my working enviroment

$ cat /etc/os-release 
NAME="Ubuntu"
VERSION="12.04.2 LTS, Precise Pangolin"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu precise (12.04.2 LTS)"
VERSION_ID="12.04"

uname -a
Linux ubt 3.2.0-49-generic #75-Ubuntu SMP Tue Jun 18 17:39:32 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ ~/Bin/LiveSuit/LiveSuit.sh

1. Press FEL key, and holding it
2. Plug in mini usb cable, and wait the following prombt
3. Release FEL key

When seeing the prombt, you have enter the FEL mode. Select Yes to continue

Congratulations! You have finished the installation process. Enjoy your Cubie and Lubuntu Desktop!

When you first start up the system, It will take about 2 minutes to
initialize the system. Also we suggest you have the ethernet cable
connected when booting, to avoid waiting DHCP timeout.

If we want to change boot parameter, say, we want to add
“hdmi.audio=EDID:0 disp.screen0_output_mode=EDID:1920x1080p50” to the
kernel parameter:

$wget http://dl.cubieboard.org/software/a20-common/mk_env_fex.tar
$tar -xf mk_env_fex.tar
$cd mk_env_fex
$vim env.cfg

Change the content below
...
loglevel=5
extras=hdmi.audio=EDID:0 disp.screen0_output_mode=EDID:1920x1080p50
#set kernel cmdline if boot.img or recovery.img has no cmdline we will use this
setargs_nand=setenv bootargs console=${console} init=${init} loglevel=${loglevel} ${extras}
setargs_mmc=setenv bootargs console=${console} init=${init} loglevel=${loglevel}
#nand command syntax: sunxi_flash read address partition_name read_bytes
..

$mk_env_fex

copy env.fex to lubuntuOS, then dd if=env.fex of=/dev/nandb bs=1M

• Getting The Kernel Source

The kernel source matching this image is here. And the defconfig is here.

Please also refer to

http://github.com/linux-sunxi
http://github.com/cubieboard2

• Compiling

$tar -zxvf linux-sunxi.tar.gz
$cp kernel_defconfig linux-sunxi/.config
$cd linux-sunxi
$make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- uImage modules
$objcopy -R .note.gnu.build-id -S -O binary vmlinux bImage
$mkbootimg --kernel bImage 
      --ramdisk rootfs.cpio.gz 
      --board "sun7i" 
      --base 0x40000000 
      -o "boot.img"

Note: mkbootimg command can be found at this package

• Replacing

Copy boot.img, modules to your lubuntu system,

#dd if=boot.img of=/dev/nandc bs=1M

Note: You should be skilled in kernel building, else it’s easy to damage yourOSsystem.

• Download Kernel Source

$wget http://dl.cubieboard.org/software/a20-cubietruck/lubuntu/ct_lubuntu_desktop_12.10_20131015/linux-sunxi.tar.gz
$wget http://dl.cubieboard.org/software/a20-cubietruck/lubuntu/ct_lubuntu_desktop_12.10_20131015/kernel_defconfig

• Extract and create local git repo

$tar -zxf linux-sunxi.tar.gz
$cp kernel_defconfig linux-sunxi/.config
$git init
$git add .
$git commit -m "init a repo just for match the uname -r token" -a
$make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
$make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- uImage
$cd $your_kernel_module_path_and_point_your_kdir_here
...

• Copy your new module to your lubuntuOS

TBD

TBD

TBD

TBD

lubuntu-12.10-desktop is quite a modern operating system, that we can do
almost all language programming, including C/C++, JAVA, Python, Perl,
and so on. To support C/C++ programming, just run the following command:

#apt-get install build-essential

To become more productivy, you can also use VIM or EMACS

#apt-get install vim emacs cscope cscope-el