Focusing on the use of the UEFI Shell and its recently released formal specification, this book unlocks a wide range of usage models which can help people best utilize the shell solutions. This text also expands on the obvious intended utilization of the shell and explains how it can be used in various areas such as security, networking, configuration, and other anticipated uses such as manufacturing, diagnostics, etc. Among other topics, Harnessing the UEFI Shell demonstrates how to write Shell scripts, how to write a Shell application, how to use provisioning options and more. Since the Shell is also a UEFI component, the book will make clear how the two things interoperate and how both Shell developers as well as UEFI developers can dip into the other's field to further expand the power of their solutions.
Harnessing the UEFI Shell is authored by the three chairs of the UEFI working sub-teams, Michael Rothman (Intel, chair of the UEFI Configuration and UEFI Shell sub-teams), Vincent Zimmer (Intel, chair of the UEFI networking sub-team and security sub-team), and Tim Lewis (Insyde Software, chair of the UEFI security sub-team). This book is perfect for any OEMs that ship UEFI-based solutions (which is all of the MNCs such as IBM, Dell, HP, Apple, etc.), software developers who are focused on delivering solutions targeted to manufacturing, diagnostics, hobbyists, or stand-alone kiosk environments.
Autorentext
Michael Rothman (Intel, chair of the UEFI Configuration and UEFI Shell sub-teams), Vincent Zimmer (Intel, chair of the UEFI networking sub-team and security sub-team), and Tim Lewis (Insyde Software, chair of the UEFI security sub-team).
Inhalt
Preface vii
Chapter 1 Introduction 1
What is UEFI? 1
What Do We Mean by Shell? 4
A Short History of the UEFI Shell 5
Brief Overview of the UEFI Shell 5
UEFI Shell APIs 6
Command Line Interface Features 6
Why a Shell at all? 7
Chapter 2 Under the UEFI Shell 9
Shell and UEFI 9
Evolution and Revolution 13
Chapter 3 What Is the UEFI Shell? 15
What Is Contained in the UEFI Shell? 16
What Kind of Shell Do You Have? 16
What!? No Shell? No Problem! 17
Programmatic Shell Environment 19
Using UEFI Shell Commands 20
Interactive Shell Environment 22
Scripting 22
Program Launch 24
File-System Abstractions 29
Shell Script Resolves into a UEFI Firmware Action 31
Chapter 4 Why We Need an Execution Environment before the OS 33
Evolution of a Machine 33
The Platform Initialization Flow 34
UEFI Transitions 36
States of a Platform 38
Readiness of UEFI 41
Migration Using the UEFI Shell 44
Going Forward 45
Chapter 5 Manufacturing 47
Throughput 47
Manufacturing Test Tools 49
Hardware Access with Manufacturing Tools 50
Converting Manufacturing Tools 53
Conclusion 54
Chapter 6 Bare Metal Provisionig 55
Provisioning with the UEFI Shell 55
UEFI Networking Stack 56
Securing the Network 58
Speeding Up the Network 62
Example of Putting It Together 62
Summary 68
Chapter 7 Configuration of Provisioned Material 69
Initialization Timeline 69
Configuration Infrastructure Overview 71
Using the Configuration Infrastructure 72
Driver Model Interactions 73
Provisioning the Platform 75
Configuring through the UEFI Shell 76
Basic Configuration 76
Advanced Configuration Abilities 79
Chapter 8 The Use of UEFI for Diagnostics 85
Types of Diagnostics 85
SMBIOS Table Organization 87
SMBIOS Structure Table Entry Point 88
Table Organization Graph 88
Structure Standards 89
Structure Evolution and Usage Guidelines 90
Text Strings 90
Required Structures and Data 91
Features 91
User Interface Design 92
Design Guide 92
Usage 93
Examples 93
Architecture Design 94
Data Structure 95
SMBIOS_STRUCTURE_TABLE 95
SMBIOS_HEADER 97
SMBIOS_STRUCTURE_POINTER 98
STRUCTURE_STATISTICS 99
Source Code for the Utility 100
Summary 105
Chapter 9 UEFI Shell Scripting 107
Hello, World! 108
Echo 108
Echo All Parameters 109
Echo All Parameters (Improved Version) 110
Concatenate Text Files 112
List Only Selected "ls" Information 113
Install Script 115
How to Make a Shell Script Appear as a Boot Option 119
Chapter 10 UEFI Shell Programming 121
A Simple UEFI Shell Application: HelloWorld 121
The Source File: HelloWorld.c 121
The Component Information (.inf) File 123
A Simple Standard Application: HelloWorld2 124
The Source File: HelloWorld2.c 124
The Component Information (.inf) File: HelloWorld2.inf 125
Read Keyboard Input in UEFI Shell Scripts: GetKey 126
The Source File: GetKey.c 127
The Component Information (.inf) File: GetKey.inf 137
The Build Description (.dsc) File 139
Calculate Math Expressions: Math 139
The Source File: Math.c 140
The Component Information (.inf) File: Math.inf 154
Convert ASCII to Unicode and Back: UniCodeDecode 154
The Source File: UniCodeDecode.c 155
The Component Information (.inf) File 163
Chapter 11 Managing UEFI Drivers Using the Shell 165
Testing Specific Protocols 166
Loading and Unloading UEFI Drivers 167
Load 168
LoadPciRom 168
Unload 169
Connecting UEFI Drivers 169
Connect 169
Disconnect 170
Reconnect 170
Driver and Device Information 171
Drivers 171