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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 | --> | ||
