This document discusses using the Eclipse IDE Yocto plugin for embedded Linux application development. It provides an overview of Yocto and the Application Development Toolkit (ADT). It then covers installing the Eclipse plugin, configuring a Yocto build, and using the plugin to create and debug embedded Linux applications in QEMU with support for tools like perf and gdb. The plugin provides an integrated environment for developing, building, and testing applications on Yocto-based embedded Linux systems.

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Developing Embedded Linux® Application
with Eclipse® IDE Yocto™ Plug-in
J u l y 2 0 1 4
Catalin Udma - Freescale Semiconductor, Inc.

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External Use 1
Agenda
• Introduction to Yocto
• Application Development Toolkit (ADT)
• Building Yocto
• Eclipse IDE Yocto™ Plug-in
− Overview
− Installation
− Configuration
− Embedded Linux Application Development
• Summary

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Introduction to Yocto
• Yocto Project (https://www.yoctoproject.org/ )
 Open-source embedded Linux build system
 “It's not an embedded Linux distribution – it creates a custom one for you”
 Freescale – Yocto contributor
 Freescale SDK – Yocto based (Power Architecture® and ARM® technologies)
Yocto provides and integrated build environment
• User-friendly framework for creating Linux distribution
• Configure the target
• Build the toolchain: GCC, GCC-cross egblic, binutils
• Build the u-boot, kernel
• Build Linux User space applications

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External Use 3
Application Development Toolkit (ADT)
• Yocto Project provides ADT tools
• Objective: provides a user-friendly way to build and develop
complete software stack
• ADT consists of the following:
− Architecture specific cross-toolchain
− QEMU
− User space tools
− Eclipse IDE Yocto Plug-in
• ADT can be used:
− Extending an Yocto build directory
• Yocto provides: cross-toolchain, QEMU and User space tools
− Stand alone (using ADT installer script)

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ADT - Resources
− Yocto Project resources
− ADT Overview
• https://www.yoctoproject.org/tools-resources/projects/application-development-toolkit-adt
− ADT Manual
• https://www.yoctoproject.org/docs/current/adt-manual/adt-manual.html

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External Use 5
Building Yocto
• Install Freescale Yocto SDK QorIQ-SDK-V1.5
• Configure build environment
$ source ./oe-init-build-env
• Build toolchain and root file system. Install toolchain
$ bitbake meta-toolchain
$ bitbake core-image-sato-sdk
$ cd tmp/deploy/sdk && source ./poky-eglibc-*.sh
• Gernerate qemu Rootfs
$ runqemu-extract-sdk <rootfs.tar.bz2> <destination>
• Yocto build provides:
− Complete distribution for target (linux, user space tools)
− Cross-toolchain
− QEMU

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Eclipse IDE Yocto Plug-in Overview
• Eclipse IDE Yocto plug-in is provided by Yocto Project
• Eclipse user friendly environment that enables GUI access to ADT
and Yocto resources
− Cross compilation
− Development, execution and debug
− Advanced Linux tools support (oprofile, perf, lttng)
− Linux application development support, including autotools
− Integrated QEMU support
− Yocto specific configuration (Yocto build directory and metadata parsing)
− Support for standalone and Yocto build system support
− User friendly interface for creating a new Yocto Project BSP

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Eclipse IDE Yocto Plug-in Installation
• Yocto Plugin - http://downloads.yoctoproject.org/releases/eclipse-plugin/1.6/juno/
− Yocto Project ADT Plug-in
− Yocto Project Bitbake Commander Plug-in
− Yocto Project Documentation plug-in
• Pre-requisites
− Luna® - http://download.eclipse.org/releases/luna
 Mobile and Device Development
• Remote System Explorer User Actions
• Target Management Terminal
• TCF Remote System Explorer add-in
• TCF Target Explorer

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Eclipse IDE Yocto Plug-in Configuration
• Preferences: Yocto Project ADT

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Embedded Linux Application Development (1)
• Create the project
• Start QEMU simulator
• Configure debug settings
• Debug and other tools (perf)

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Embedded Linux Application Development (2)
Create the project
• New Project -> C/C++/ C Project
− Yocto Project ADT Autotools
− Yocto Project ADT CMake
• Inherit all Yocto configurations
− Toolchain
− Build flags (-mcpu, -m32…)
− sysroot

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External Use 11
Embedded Linux Application Development (3)
Launch QEMU
• Run->External Tools -> External Tools Configurations
− qemu <ppc603e> executable automatically added by Yocto Plugin
− Qemu inherits all the configurations from Yoct (settings, scripts)

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Embedded Linux Application Development (4)
Configure Debug Settings
• Debug Configurations -> C/C++ Remote Application
− Application elf
− Connection to target (qemu)
 New Connection
• Select TCF protocol for connection to target
• Set IP address of the qemu
• Browse target (qemu) capabilities
− Debugger
 cross gdb from yocto :
/opt/poky/1.4.1/sysroots/…/powerpc-poky-linux-gdb

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Embedded Linux Application Development (5)
Debug and other tools
• gdb based debug
• Debug application on qemu
• Enable other tools
− Perf
− Oprofile
− Lttng
− System Tap
• Root console for running
other tools (perf)

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Summary
• Eclipse IDE Yocto Plug-in provides an user friendly environment
that enables GUI access to ADT and Yocto resources
• Capabilities:
− Linux application development (build, run, debug)
− Integrated Qemu based on Yocto settings
− Target Linux tools (perf, system tap, lttng)
− Yocto project configuration
 New build
 Yocto HOB

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© 2014 Freescale Semiconductor, Inc. | External Use
www.Freescale.com