We use the Buildroot as the root file system.

How to Build the Buildroot:

Install the cross compiler and the toolchain required on your Linux Ubuntu PC following this article (Tested on Ubuntu 12.04):

• Install the cross toolchain to build system image

Copy the CORE9G25 rootfs.tar.bz2 from the CD://linux/code/ to the PC /tmp folder, then do the follow command to uncompress it:

~$ cd ~
~$ sudo tar xvf /tmp/rootfs.tar.bz2 -C .

This is a fork of the original Atmel version available on GitHub.

Do the filesystem with the follow command:

~$ sudo mkubifsimage rootfs/ ubifs.img

Then we will get the ubifs.img file, you can copy it to the USB Disk for update the board system image.

A compiled version of AT91Bootstrap is available on:

• MicroSD card repository
• Update the system image by USB Disk

Related links

• Atmel linux4sam website