IoT & Hardware
Reader small image

You're reading from  Embedded Linux Projects Using Yocto Project Cookbook

Product typeBook
Published inMar 2015
Publisher
ISBN-139781784395186
Edition1st Edition
Tools
Yocto Project
Concepts
Embedded Systems
Right arrow
Author (1)
Alex Gonzalez
Alex Gonzalez
author image
Alex Gonzalez

Alex González is a software engineering supervisor at Digi International and product owner of the Digi Embedded Yocto distribution. He started working professionally with embedded systems in 1999 and the Linux kernel in 2004, designing products for voice and video over IP networks, and followed his interests into machine-to-machine (M2M) technologies and the Internet of Things. Born and raised in Bilbao, Spain, Alex has an electronic engineering degree from the University of the Basque Country and he received his MSc in communication systems from the University of Portsmouth.
Read more about Alex Gonzalez

Right arrow

Reducing the Linux kernel image size

Before or in parallel with the root filesystem customization, embedded projects usually require an image size optimization that will reduce the boot time and memory usage.

Smaller images mean less storage space, less transmission time, and less programming time, which saves money both in manufacturing and field updates.

By default, the compressed Linux kernel image (zImage) for the wandboard-quad is around 5.2 MB. This recipe will show how we can reduce that.

How to do it...

An example of a minimal kernel configuration for a Wandboard that is able to boot from a microSD card root filesystem is the arch/arm/configs/wandboard-quad_minimal_defconfig file that follows:

CONFIG_KERNEL_XZ=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_EMBEDDED=y
CONFIG_SLOB=y
CONFIG_ARCH_MXC=y
CONFIG_SOC_IMX6Q=y
CONFIG_SOC_IMX6SL=y
CONFIG_SMP=y
CONFIG_VMSPLIT_2G=y
CONFIG_AEABI=y
CONFIG_CPU_FREQ=y
CONFIG_ARM_IMX6_CPUFREQ=y
CONFIG_CPU_IDLE...
lock icon
The rest of the page is locked
Previous Page
Chapter 10 of 13, Page 13
Next Page
You have been reading a chapter from
Embedded Linux Projects Using Yocto Project Cookbook
Published in: Mar 2015Publisher: ISBN-13: 9781784395186
© 2015 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Alex Gonzalez

Alex González is a software engineering supervisor at Digi International and product owner of the Digi Embedded Yocto distribution. He started working professionally with embedded systems in 1999 and the Linux kernel in 2004, designing products for voice and video over IP networks, and followed his interests into machine-to-machine (M2M) technologies and the Internet of Things. Born and raised in Bilbao, Spain, Alex has an electronic engineering degree from the University of the Basque Country and he received his MSc in communication systems from the University of Portsmouth.
Read more about Alex Gonzalez

Personalised recommendations for you

Based on your interests and search pattern

Architectural Patterns and Techniques for Developing IoT Solutions

Architectural Patterns and Techniques for Developing IoT Solutions

This book covers all the patterns and considerations that give you both the power and flexibility to build scalable, secure, and performant IoT solutions by combining various patterns in interesting ways. It also lists the benefits of combining IoT with technologies like blockchain, 3D-printing, 5G, Generative AI, quantum computing, and LLMs.

BookSep 2023304 pages
Arduino Data Communications

Arduino Data Communications

Arduino Data Communication focuses on IoT’s Internet aspect, guiding you in setting up your own infrastructure for storing and managing the data collected from sensors. This book goes beyond microcontroller basics, equipping you with the knowledge essential for building real-world projects.

BookNov 2023286 pages5
Arduino IoT Cloud for Developers

Arduino IoT Cloud for Developers

From fundamental principles to advanced techniques, this comprehensive book equips you with the knowledge and skills needed to design and deploy IoT applications seamlessly. Explore cloud integration, best practices, and real-world projects to harness the full potential of IoT application development with the Arduino IoT Cloud.

BookNov 2023402 pages
The Azure IoT Handbook

The Azure IoT Handbook

Building IoT Systems with Azure IoT is a comprehensive introduction for those who are new to the Internet of Things and looking to get up to speed in no time. This book will teach you how to create and develop IoT solutions with intelligent edge-to-cloud technologies in the Azure cloud.

BookDec 2023248 pages