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1 | <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | ||
2 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" | ||
3 | [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > | ||
4 | |||
5 | <chapter id='dev-manual-qemu'> | ||
6 | |||
7 | <title>Using the Quick EMUlator</title> | ||
8 | |||
9 | <para> | ||
10 | Quick EMUlator (QEMU) is an Open Source project the Yocto Project uses | ||
11 | as part of its development "toolset". | ||
12 | As such, the information in this chapter is limited to the | ||
13 | Yocto Project instatiation of QEMU and not QEMU in general. | ||
14 | For official information and documentation on QEMU, see the | ||
15 | following references: | ||
16 | <itemizedlist> | ||
17 | <listitem><para><emphasis><ulink url='http://wiki.qemu.org/Main_Page'>QEMU Website</ulink>:</emphasis> | ||
18 | The official website for the QEMU Open Source project. | ||
19 | </para></listitem> | ||
20 | <listitem><para><emphasis><ulink url='http://wiki.qemu.org/Manual'>Documentation</ulink>:</emphasis> | ||
21 | The QEMU user manual. | ||
22 | </para></listitem> | ||
23 | </itemizedlist> | ||
24 | </para> | ||
25 | |||
26 | <para> | ||
27 | This chapter provides an overview of the Yocto Project instantiation of | ||
28 | QEMU, a description of how you use QEMU and its various options and modes, | ||
29 | and a few tips and tricks you might find helpful when using QEMU. | ||
30 | </para> | ||
31 | |||
32 | <section id='qemu-overview'> | ||
33 | <title>Overview</title> | ||
34 | |||
35 | <para> | ||
36 | Within the context of the Yocto Project, QEMU is an | ||
37 | emulator and virtualization machine that allows you to run a complete | ||
38 | image you have built using the Yocto Project as just another task | ||
39 | on your build system. | ||
40 | QEMU is useful for running and testing images and applications on | ||
41 | supported Yocto Project architectures without having actual hardware. | ||
42 | </para> | ||
43 | |||
44 | <para> | ||
45 | QEMU is made available with the Yocto Project a number of ways. | ||
46 | The easiest and recommended method for getting QEMU is to run the | ||
47 | ADT installer. For more information on how to make sure you have | ||
48 | QEMU available, see the | ||
49 | "<ulink url='&YOCTO_DOCS_ADT_URL;#the-qemu-emulator'>The QEMU Emulator</ulink>" | ||
50 | section in the Yocto Project Application Developer's Guide. | ||
51 | </para> | ||
52 | </section> | ||
53 | |||
54 | <section id='qemu-running-qemu'> | ||
55 | <title>Running QEMU</title> | ||
56 | |||
57 | <para> | ||
58 | Running QEMU involves having your build environment set up, having the | ||
59 | right artifacts available, and understanding how to use the many | ||
60 | options that are available to you when you start QEMU using the | ||
61 | <filename>runqemu</filename> command. | ||
62 | </para> | ||
63 | |||
64 | <section id='qemu-setting-up-the-environment'> | ||
65 | <title>Setting Up the Environment</title> | ||
66 | |||
67 | <para> | ||
68 | You run QEMU in the same environment from which you run BitBake. | ||
69 | This means you need to source a build environment script (i.e. | ||
70 | <ulink url='&YOCTO_DOCS_REF_URL;#structure-core-script'><filename>&OE_INIT_FILE;</filename></ulink> | ||
71 | or | ||
72 | <ulink url='&YOCTO_DOCS_REF_URL;#structure-memres-core-script'><filename>oe-init-build-env-memres</filename></ulink>). | ||
73 | </para> | ||
74 | </section> | ||
75 | |||
76 | <section id='qemu-using-the-runqemu-command'> | ||
77 | <title>Using the <filename>runqemu</filename> Command</title> | ||
78 | |||
79 | <para> | ||
80 | The basic <filename>runqemu</filename> command syntax is as | ||
81 | follows: | ||
82 | <literallayout class='monospaced'> | ||
83 | $ runqemu [<replaceable>option</replaceable> ] [<replaceable>option</replaceable> ] [...] | ||
84 | </literallayout> | ||
85 | <filename>runqemu</filename> does a good job based on what you | ||
86 | provide with the command at figuring out what you are trying | ||
87 | to do. | ||
88 | Minimally, through the use of options, you must provide either | ||
89 | a machine name, a virtual machine image | ||
90 | (<filename>*.vmdk</filename>), or a kernel image | ||
91 | (<filename>*.bin</filename>). | ||
92 | </para> | ||
93 | |||
94 | <para> | ||
95 | If you do provide some "illegal" combination or options or perhaps | ||
96 | do not provide enough in the way of options, | ||
97 | <filename>runqemu</filename> provides appropriate error messaging | ||
98 | to help you figure it out. | ||
99 | </para> | ||
100 | |||
101 | <para> | ||
102 | Following is a description of <filename>runqemu</filename> | ||
103 | options you can provide on the command line: | ||
104 | <itemizedlist> | ||
105 | <listitem><para><emphasis><replaceable>QEMUARCH</replaceable>:</emphasis> | ||
106 | The QEMU machine architecture, which can be "qemux86", | ||
107 | "qemux86-64", "qemuarm", "qemumips", "qemumipsel", | ||
108 | âqemumips64", "qemush4", "qemuppc", "qemumicroblaze", | ||
109 | or "qemuzynq". | ||
110 | </para></listitem> | ||
111 | </itemizedlist> | ||
112 | </para> | ||
113 | </section> | ||
114 | </section> | ||
115 | |||
116 | <section id='qemu-modes'> | ||
117 | <title>Modes</title> | ||
118 | |||
119 | </section> | ||
120 | |||
121 | <section id='qemu-tips-and-tricks'> | ||
122 | <title>Tips and Tricks</title> | ||
123 | |||
124 | </section> | ||
125 | |||
126 | </chapter> | ||
127 | <!-- | ||
128 | vim: expandtab tw=80 ts=4 | ||
129 | --> | ||