coreboot 及UEFI 集成intel fsp书籍

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coreboot 及UEFI 集成intel fsp书籍 coreboot 及UEFI 集成intel fsp书籍

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Computer Hardware/General

User level:

Beginning–Advanced

BOOKS FOR PROFESSIONALS BY PROFESSIONALS

Embedded Firmware Solutions

Embedded Firmware Solutions is the perfect introduction and daily-use field

guide—for the thousands of firmware designers, hardware engineers, architects,

managers, and developers—to Intel’s new firmware offering (including Quark

coverage), showing how to integrate Intel

Architecture designs into their designs.

Featuring hands-on examples and exercises using Open Source codebases,

like coreboot, EFI Development Kit, and tianocore, on Chromebook and Intel

Quark

reference design, this is the first book that combines a timely and thorough overview

of firmware solutions for the rapidly evolving embedded ecosystem with in-depth

coverage of requirements and optimization.

What You’ll Learn:

• Understand the key differences between PC and embedded ecosystems

in terms of firmware needs

• Thorough underpinning of Intel’s firmware solutions

• How to build a firmware stack for Chromebook and Intel

Quark products

• How to integrate Intel

FSP with a firmware stack, by studying the hands-on

examples based on coreboot and UEFI

• How to make a smart “build-it or buy-it” decision when starting a

new embedded project

Sun

Zimmer

Jones

Reinauer

9781484 200711

53999

ISBN 978-1-4842-0071-1

Contents at a Glance

About the Authors �� xv

About the Technical Reviewers �� xvii

Acknowledgments �� xix

Foreword �� xxi

Introduction �� xxiii

Chapter 1: Introduction ■ �� 1

Chapter 2: Firmware Stacks for Embedded Systems ■ �� 13

Chapter 3: Intel ■

Firmware Support Package (Intel

FSP) �� 25

Chapter 4: Building coreboot with Intel FSP ■ �� 55

Chapter 5: Chrome book Firmware Internals ■ �� 97

Chapter 6: Intel FSP and UEFI Integration ■ �� 121

Chapter 7: Building Firmware for Quark Processors ■ �� 145

Chapter 8: Putting It All Together ■ �� 173

Appendix A: Sample Boot Setting File (BSF) ■ �� 179

Index �� 191

xxiii

Introduction

We consider ourselves lucky enough to live in an era when new things and new ideas

seem to come out every few years, if not every few days. We are not only experiencing an

explosion of new ideas, but also witnessing some existing technologies being completely

maxed out in our lifetime, including the semiconductor technology. Since Brattain and

H. R. Moore made a demonstration of the rst transistor at Bell Labs on December 23, 1947,

the semiconductor, as we know it today, is reaching its physical limit, even though we are

still trying very hard to shrink it below 10 nanometers. For the sake of argument, even if we

can still shrink a couple of nanometers below 10 nanometers, how much further can we

really go without changing the fundamental theory the technology is based on?

In the meantime, there are many other technologies that are approaching the limits

of our sense and sensibility. Do we need more than 12 bits of color depth that shows more

than billions of colors? Do we need a frame rate that is beyond what our eyes and brain

can process? Do we need cars that go faster than our own response time? We now have

display devices, media playback technologies, and transportation vehicles that achieve

the best that they need to be.

Even though that is the case, there are still unlimited opportunities to make devices

smarter and more connected to make our lives easier and safer. People are calling these

devices the Internet of ings, or IoT for short. e explosive cycle of the IoT has just

begun: cars will be talking to cars in the near future, thermostats and sprinkler systems

can adjust themselves based on current weather forecast, buildings can manage lighting

and air circulation based on where people are, and the list goes on and on.

Yes, this book is related to the explosion of the Internet of ings. We are addressing

a technical area that is rarely talked about—the rmware inside of the Internet of ings.

Firmware is the rst piece of software that runs after silicon, coming out from the power-

on reset state. Sometimes it is mysterious to people why building a rmware stack is

hard and why rmware can be problematic. Considering the fact that the time it takes to

run a piece of rmware is only between subseconds to a few minutes at most, why are

we writing a book about it? After all, there are already books that talk about BIOS, UEFI

(beyond BIOS), and techniques to optimize the rmware to boot faster. Why do we need

yet another book to talk about rmware for the Internet of ings and the embedded

system in general? ere is one important reason: the rmware for IoT is dierent from

the rmware running on a PC (BIOS or UEFI-based rmware), and there are many

unique requirements for IoT rmware, and we will talk about them in the second chapter

of this book.

is is what this book is about. We are going to examine the uniqueness of rmware

requirements in embedded systems and IoT devices, and then we are going to introduce

the technique Intel introduced to help IoT system rmware developers overcome the

steep learning curve in developing a rmware stack for their versatile IoT products.

■ introduCtion

xxiv

In this book, we are going to use two open source rmware stacks—coreboot and

UEFI—to demonstrate the concept and show the steps to develop a workable rmware

stack using widely available platforms from Intel. We are also going to show how the

rmware works in a Chromebook, and what it does in a Chromebook, and we will also

discuss the rmware for Intel

Quark family.

e targeted audience for this book are rmware engineers, hardware engineers,

software engineers, and other professionals curious about IoT rmware. is is a good

book for students who are learning about rmware, because we are going to give step-

by-step instructions about how to build a workable rmware stack using commercially

available platforms. For developers who have been involved in PC rmware, this can

be a good reference book to understand the dierences between PC and IoT, and

the alternative solutions available. For people who have been struggling with Intel

Architecture (IA) and its rmware stack due to a lack of technical information from

Intel in the past, this book reveals an opportunity for you to quickly get over the silicon

initialization hump, and you will be able to quickly develop an eective rmware stack

using the techniques learned from this book.

is book uses a lot of pages to describe the Intel

Firmware Support Package

(Intel FSP) because it is a way to encapsulate the complexity of silicon initialization

to make rmware development work easier. Since its launch in October, 2012, many

developers and designers of alternative architectures have beneted from this product.

Why Should You Read this Book?

ere are not many books out there talking about rmware because it is not a standard

discipline that can be talked about generically. Every subject in the realm of rmware

can be a book of its own, and there have been books about UEFI, BIOS, Fast Boot,

RTOS, assembly languages, and so forth. ere are also many system requirements and

constraints that can dictate how a rmware is chosen and written; therefore, it is a topic

that cannot be easily addressed holistically without an objective. Our objective is to show

you how you can take advantage of Intel Architecture, and how to prepare a rmware

stack for Intel microprocessors regardless of the rmware stack that you choose. ere

will be areas that are not covered in this book, such as power management and secure

boot features, but readers can certainly nd in-depth discussion of those topics in other

technical books in the market. is book is written to help you build a workable rmware

stack for Intel Architecture.

What Chapters Should You Read?

Since there are many interesting but distinctly dierent topics surrounding IoT device

rmware, busy readers can pick and choose the chapters to read and skip if needed.

If you are just curious about what rmware options you may have for IoT devices,

you may read Chapters 1 and 2 before diving too deeply into actual implementations.

If you are interested in developing a coreboot-based rmware solution for Intel

Architecture, you can get a complete picture of the process by reading Chapters 1, 3, and 4.

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