Urim at 14:44, 12 January 2017

2017-01-12T14:44:35Z

New page

= Introduction =

This article describes how to install and build the Yocto Linux 1.8 (fido) release for CL-SOM-AM57x on a development machine.

= Preparation steps =

* Download the Linux Yocto package for CL-SOM-AM57x from [http://compulab.co.il/products/computer-on-modules/cl-som-am57x-ti-am5728-am5718-system-on-module/#devres CompuLab website]. Unzip the package to a directory on your host workstation:

<pre>
mkdir cl-som-am57x-yocto-dev
cd cl-som-am57x-yocto-dev
unzip /path/to/downloaded/cl-som-am57x-yocto-linux.zip
</pre>
* Install development tools:
<pre>
sudo apt-get install git build-essential diffstat texinfo gawk chrpath gcc-multilib wget socat libsdl1.2-dev mtd-utils
</pre>
* Install the Arago toolchain
<pre>
wget https://snapshots.linaro.org/openembedded/sources/gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.tar.xz
sudo tar -Jxvf gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.tar.xz -C /opt
</pre>

== Download and install Yocto Linux development source code ==

Type the following commands to download and install the Yocto Linux 1.8 (fido) source code on the development station:
<pre>
git clone git://arago-project.org/git/projects/oe-layersetup.git tisdk
cd tisdk
./oe-layertool-setup.sh -f configs/processor-sdk/processor-sdk-02.00.01.07-config.txt
</pre>

=== Apply the CL-SOM-AM57x support patch ===
Once the Yocto Linux 1.8 (fido) source code is installed on the Host machine, apply the CL-SOM-AM57x patch, as follows:
<pre>
patch -p1 < ../cl-som-am57x-yocto-linux/development/yocto-cl-som-am57x-1.0.patch
</pre>
At this point, CompuLab Yocto support has been installed over the Yocto Linux source code and can be built.

== local.conf customizations ==
For local builds customization, edit you local.conf file with any favourite text editor.

=== Parallel build ===
Set the build parameters to fully utilize your host machine
BB_NUMBER_THREADS = '4'<br>PARALLEL_MAKE = '-j 6'
BB_NUMBER_THREADS should be your host machine's number of threads minus 2 or same.
PARALLEL_MAKE should be the number of threads your host machine has plus two.<br>

=== Download directory ===
Recommended to save download time and space.
DL_DIR = "/home/<uname>/yocto_dl"<br>

== Setting up the Toolchain ==
<pre>
export PATH=/opt/gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf/bin:$PATH
</pre>

= Building the CL-SOM-AM57x Yocto image =
Change directory to the build directory of Yocto and set up the build environment:
<pre>
cd build
source conf/setenv
</pre>

The {{parameter|arago-core-tisdk-image}} can be built as follows:
<pre>
MACHINE=cl-som-am57x bitbake arago-core-tisdk-image
</pre>

After the image is built, all images are located in: {{filename|/path/to/cl-som-am57x-yocto-linux/tisdk/build/arago-tmp-external-linaro-toolchain/deploy/images/cl-som-am57x}}

= See also =
* [[CL-SOM-AM57x: Yocto Linux: Manual Installation]]
* [[CL-SOM-AM57x: Yocto Linux: Package contents]]

[[Category:Linux]]
[[Category:Yocto]]
[[Category:CL-SOM-AM57x]]

CL-SOM-AM57x: Yocto Linux: Building - Revision history

Urim at 14:44, 12 January 2017