Latest revision as of 16:24, 27 March 2014

Introduction

This article is for Yocto Project 1.4 - Poky 9.0.y dylan branch.
It is interesting read How to use the Yocto Project to develop Embedded Linux article previously.

Build Platform Setup Environment

	The instructions below are only for IGEP PROCESSOR BOARDS based on AM335x processor.

In order to build an image with BSP support for a given release, you need to download the corresponding BSP repository.
At this time latest stable branch of Yocto for AM335x devices is Poky 9.0.y dylan branch.

 $ git clone -b dylan git://git.isee.biz/pub/scm/poky.git

Enter to the poky directory,

 $ cd poky

Clone the meta-isee layer for dylan:

 $ git clone -b dylan git://git.isee.biz/pub/scm/meta-isee.git

Load Poky environment variables:

 $ source oe-init-build-env

Having done that, and assuming you downloaded the BSP contents at the top-level of your yocto build tree, you can build a igep image by adding the location of the 'meta-isee' layer to 'bblayers.conf'

Add meta-isee layer into .../poky/build/conf/bblayers.conf:

	<path to>/poky/meta-isee \
  "
BBLAYERS_NON_REMOVABLE ?= " \

To enable the isee layer, add the 'igep0033 MACHINE' to .../poky/build/conf/local.conf:

 MACHINE ?= "igep0033"

NOTE: If your host machine has multiple corer, you can speed-up the compilation process uncommenting the BB_NUMBER_THREADS and PARALLEL_MAKE variables from local.conf.

You should then be able to build a image as such:

 $ bitbake demo-image-sato do-release-firmware

At the end of a successful build, you should have an image that you could use for boot device from flash or a micro-SD card.

Extending the available packages with others layers

You can append more layers to your environment in order to build more packages, in following example you'll download the meta-openembedded layer. In your poky directory

 $ git clone -b dylan git://git.openembedded.org/meta-openembedded

Add the layer into build/conf/bblayers.conf:

       <path to>/poky/meta-openembedded/meta-oe \

Now you can build any of the new packages added, for example:

 $ bitbake postgresql

Create your own Linux image

To learn how to customize Yocto Project images to satisfy particular requirements. Read the Yocto documentation written for that purpose:

• http://www.yoctoproject.org/docs/1.4/dev-manual/dev-manual.html#usingpoky-extend-customimage

Working Within Eclipse

To learn how to use Eclipse IDE Yocto Plug-in to develop your Yocto Project. Read the Yocto documentation written for that purpose:

• http://www.yoctoproject.org/docs/1.4/adt-manual/adt-manual.html#adt-eclipse

Yocto 1.4 documentation

Official documentation

• Yocto Project Quick Start: This short document lets you get started with the Yocto Project quickly and start building an image.
• The Yocto Project Application Development Toolkit (ADT) User's Guide: This manual provides information that lets you get going with the ADT to develop projects using the Yocto Project.
• The Yocto Project Board Support Package (BSP) Developer's Guide: This brief document defines a structure for BSP components. Having a commonly understood layout encourages standardization.
• The Yocto Project Development Manual: This Manual provides an overview of the development process for images and user-space applications.
• The Yocto Project Reference Manual: This manual is the complete reference guide to the Yocto Project, including the Poky reference system which contains a worki