knochenreiter-buildroot/board/armadeus

Introduction
============

Armadeus APFxx are Systems On Module (SOM) based on Freescale/NXP i.MX
processors associated with an FPGA (except on APF28). Non volatile
data are stored in on-module NOR or NAND Flash, depending on the
model. These SOM can be used on Armadeus development boards or with
custom docking boards.

Supported platforms
===================

Buildroot currently supports the following Armadeus platforms with the
associated defconfigs:

* APF27 SOM + devt board -> armadeus_apf27_defconfig
* APF51 SOM + devt board -> armadeus_apf51_defconfig
* APF28 SOM + devt board -> armadeus_apf28_defconfig

Vanilla Linux versions are preferred to Freescale's one in these
configurations.

How to build it
===============

Configure Buildroot
-------------------

Let's say you own an APFxx SOM with it's corresponding development
board, all you have to do is:

$ make armadeus_apfxx_defconfig

where "apfxx" is the version of your SOM.

Launch build
------------

$ make

Result of the build
-------------------

When the build is finished, you will end up with:

output/images/
├── imx**-apfxxdev.dtb [1]
├── rootfs.tar
├── rootfs.ubi
├── rootfs.ubifs
└── uImage

[1] Only if the kernel version used uses a Device Tree.

Building U-Boot is currently not supported in these configurations.

Installation
============

You will require a serial connection to the board and a TFTP server on
your Host PC. Assuming your server is configured for exporting
/tftpboot/ directory, you will have to copy the generated images to
it:

$ cp output/images/uImage /tftpboot/apfxx-linux.bin
$ cp output/images/*.dtb /tftpboot/
$ cp output/images/rootfs.ubi /tftpboot/apfxx-rootfs.ubi

where "apfxx" is the version of your SOM, as used with _defconfigs.

Then on your serial terminal, all you have to do is:

* interrupt the boot process and access U-Boot console by pressing any
key when booting,
* configure board and server IP addresses with "ipaddr" and "serverip"
environment variables,
* if you want to update kernel:
BIOS > run update_kernel
* if you want to update device tree:
BIOS > run update_dtb
* if you want to update rootfs:
BIOS > run update_rootfs

That's it !