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authorScott Rifenbark <scott.m.rifenbark@intel.com>2011-08-18 09:38:15 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2011-08-23 18:47:02 -0700
commite384051ded9e846050473df8a043cba656dcdf67 (patch)
treed86f3e78ee53498c80df494351f56eac097cc23a /documentation/poky-ref-manual/introduction.xml
parent7f9b16defbd72e0b082ea428ae379d430bf997bb (diff)
downloadpoky-e384051ded9e846050473df8a043cba656dcdf67.tar.gz
documentation/poky-ref-manual/introduction.xml: re-write for YP
I re-wrote and reorganzied this chapter to reflect the book as a Yocto Project Reference Guide. (From yocto-docs rev: ef3c3955ab0cedb57d9ae48041ed94806fe34001) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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5<title>Introduction</title> 5<title>Introduction</title>
6 6
7<section id='intro-welcome'> 7<section id='intro-welcome'>
8 <title>Welcome to Poky!</title> 8 <title>Introduction</title>
9 9
10 <para> 10 <para>
11 Poky is the build tool in the Yocto Project. 11 This manual provides reference information for the current release of the Yocto Project.
12 The Yocto Project uses Poky to build images (kernel, system, and application software) for 12 The Yocto Project is an open-source collaboration project focused on embedded Linux
13 targeted hardware. 13 developers.
14 </para> 14 Amongst other things, the Yocto Project uses the Poky build tool to
15 15 construct complete Linux images.
16 <para> 16 You can find complete introductory and getting started information on the Yocto Project
17 Before diving into Poky, it helps to have an understanding of the Yocto Project. 17 by reading the
18 Especially useful for newcomers is the information in the Yocto Project Quick Start, which 18 <ulink url='http://www.yoctoproject.org/docs/1.1/yocto-project-qs/yocto-project-qs.html'>
19 you can find on the <ulink url="http://www.yoctoproject.org">Yocto Project website</ulink>. 19 Yocto Project Quick Start</ulink>.
20 Specifically, the guide is 20 You can also find lots of information on the Yocto Project on the
21 at <ulink url="http://www.yoctoproject.org/docs/yocto-quick-start/yocto-project-qs.html"/>. 21 <ulink url="http://www.yoctoproject.org">Yocto Project website</ulink>.
22 </para> 22 </para>
23</section> 23</section>
24 24
25<section id='what-is-poky'> 25<section id='intro-manualoverview'>
26 <title>What is Poky?</title> 26 <title>Documentation Overview</title>
27
28 <para>
29 Within the Yocto Project, Poky provides an open source, full-platform build tool based on
30 Linux, X11, Matchbox, GTK+, Pimlico, Clutter,
31 and other <ulink url='http://gnome.org/mobile'>GNOME Mobile</ulink> technologies.
32 It provides a focused and stable subset of OpenEmbedded upon which you can easily and
33 reliably build and develop.
34 Poky fully supports a wide range of x86, ARM, MIPS and PowerPC hardware and device virtualization.
35 </para>
36
37 <para>
38 Poky is primarily a platform builder that generates filesystem images
39 based on open source software such as the Kdrive X server, the Matchbox
40 window manager, the GTK+ toolkit and the D-Bus message bus system. While images
41 for many kinds of devices can be generated, the standard example
42 machines target QEMU full-system emulation (x86, ARM, MIPS and PowerPC) and
43 real reference boards for each of these architectures.
44 Poky's ability to boot inside a QEMU
45 emulator makes it particularly suitable as a test platform for developing embedded software.
46 </para>
47
48 <para> 27 <para>
49 An important component integrated within Poky is Sato, a GNOME Mobile-based 28 This reference manual consists of the following:
50 user interface environment. 29 <itemizedlist>
51 It is designed to work well with screens that use very high DPI and have restricted 30 <listitem><para><emphasis>
52 sizes, such as those often found on smartphones and PDAs. 31 <link linkend='usingpoky'>Using the Yocto Project</link>:</emphasis> This chapter
53 Because Sato is coded for speed and efficiency, it works smoothly on hand-held and 32 provides an overview of the components that make up the Yocto Project
54 other embedded hardware. 33 followed by information about debugging images created in the Yocto Project.
55 It sits nicely on top of any device that uses the GNOME Mobile stack and it results in 34 </para></listitem>
56 a well-defined user experience. 35 <listitem><para><emphasis>
36 <link linkend='extendpoky'>Extending the Yocto Project</link>:</emphasis> This chapter
37 provides information about how to extend and customize the Yocto Project
38 along with advice on how to manage these changes.</para></listitem>
39 <listitem><para><emphasis>
40 <link linkend='bsp'>Board Support Packages (BSP) - Developer's Guide</link>:</emphasis>
41 This chapter describes the example filesystem layout for BSP development and
42 the click-through licensing scheme.</para></listitem>
43 <listitem><para><emphasis>
44 <link linkend='platdev'>Platform Development With the Yocto Project</link>:</emphasis>
45 This chapter describes application development, debugging, and profiling using
46 the Yocto Project.</para></listitem>
47 <listitem><para><emphasis>
48 <link linkend='ref-structure'>Reference: Directory Structure</link>:</emphasis>
49 This appendix describes the directory structure of the Yocto Project files.
50 The Yocto Project files represent the file structure or Git repository created
51 as a result of setting up the Yocto Project on your host development system.
52 </para></listitem>
53 <listitem><para><emphasis>
54 <link linkend='ref-bitbake'>Reference: BitBake</link>:</emphasis>
55 This appendix provides an overview of the BitBake tool and its role within
56 the Yocto Project.</para></listitem>
57 <listitem><para><emphasis>
58 <link linkend='ref-classes'>Reference: Classes</link>:</emphasis>
59 This appendix describes the classes used in the Yocto Project.</para></listitem>
60 <listitem><para><emphasis>
61 <link linkend='ref-images'>Reference: Images</link>:</emphasis>
62 This appendix describes the standard images that the Yocto Project supports.
63 </para></listitem>
64 <listitem><para><emphasis>
65 <link linkend='ref-features'>Reference: Features</link>:</emphasis>
66 This appendix describes mechanisms for creating distribution, machine, and image
67 features during the build process using the Yocto Project.</para></listitem>
68 <listitem><para><emphasis>
69 <link linkend='ref-variables-glos'>Reference: Variables Glossary</link>:</emphasis>
70 This appendix presents most Yocto Project variables.
71 Entries describe the function of the variable and how to apply them.
72 </para></listitem>
73 <listitem><para><emphasis>
74 <link linkend='ref-varlocality'>Reference: Variable Locality
75 (Distro, Machine, Recipe, etc.)</link>:</emphasis>
76 This appendix provides variable locality or context.</para></listitem>
77 <listitem><para><emphasis>
78 <link linkend='faq'>Reference: FAQ</link>:</emphasis>
79 This appendix provides answers for commonly asked questions in the Yocto Project
80 development environment.</para></listitem>
81 <listitem><para><emphasis>
82 <link linkend='resources'>Reference: Contributing to the Yocto Project</link>:</emphasis>
83 This appendix provides guidance on how you can contribute back to the Yocto
84 Project.</para></listitem>
85 </itemizedlist>
57 </para> 86 </para>
87</section>
58 88
59 <screenshot>
60 <mediaobject>
61 <imageobject>
62 <imagedata fileref="figures/ss-sato.png" format="PNG" align='center' scalefit='1' width="100%" contentdepth="100%"/>
63 </imageobject>
64 <caption>
65 <para>The Sato Desktop - A screenshot from a machine running a Poky built image</para>
66 </caption>
67 </mediaobject>
68 </screenshot>
69 89
90<section id='intro-requirements'>
91<title>System Requirements</title>
70 <para> 92 <para>
71 Poky has a growing open source community and is also backed up by commercial organizations 93 For system Yocto Project system requirements, see the
72 including Intel&reg; Corporation. 94 <ulink url='http://www.yoctoproject.org/docs/1.1/yocto-project-qs/yocto-project-qs.html#resources'>
95 What You Need and How You Get It</ulink> section in the
96 <ulink url='http://www.yoctoproject.org/docs/1.1/yocto-project-qs/yocto-project-qs.html'>
97 Yocto Project Quick Start</ulink>.
73 </para> 98 </para>
74</section> 99</section>
75 100
76<section id='intro-manualoverview'> 101<section id='intro-getit'>
77 <title>Documentation Overview</title> 102 <title>Obtaining the Yocto Project</title>
78 <para>
79 The sections in this reference manual describe different aspects of Poky.
80 The <link linkend='usingpoky'>'Using Poky'</link> section provides an overview of the components
81 that make up Poky followed by information about using Poky and debugging images created in
82 the Yocto Project.
83 The <link linkend='extendpoky'>'Extending Poky'</link> and
84 <link linkend='bsp'>'Board Support Packages'</link> sections provide information
85 about how to extend and customize Poky along with advice on how to manage these changes.
86 The <link linkend='platdev'>'Platform Development with Poky'</link> section provides information about
87 interaction between Poky and target hardware for common platform development tasks such as software
88 development, debugging and profiling.
89 The rest of the manual consists of several reference sections, each providing details on a specific
90 area of Poky functionality.
91 </para>
92
93 <para> 103 <para>
94 This manual applies to Poky Release 5.0 (Bernard). 104 The Yocto Project development team makes the Yocto Project available through a number
105 of methods:
106 <itemizedlist>
107 <listitem><para><emphasis>Releases:</emphasis> Stable, tested releases are available through
108 <ulink url='http://yoctoproject.org/downloads/poky/'/>.</para></listitem>
109 <listitem><para><emphasis>Nightly Builds:</emphasis> These releases are available at
110 <ulink url='http://autobuilder.yoctoproject.org/'/>.
111 These builds include Yocto Project releases, meta-toolchain tarballs, and
112 experimental builds.</para></listitem>
113 <listitem><para><emphasis>Yocto Project Website:</emphasis> You can find releases
114 of the Yocto Project and supported BSPs at the
115 <ulink url='http://www.yoctoproject.org'>Yocto Project website</ulink>.
116 Along with these downloads, you can find lots of other information at this site.
117 </para></listitem>
118 </itemizedlist>
95 </para> 119 </para>
96</section> 120</section>
97 121
98 122<section id='intro-getit-dev'>
99<section id='intro-requirements'> 123 <title>Development Checkouts</title>
100 <title>System Requirements</title>
101 <para> 124 <para>
102 Although we recommend Debian-based distributions 125 Development using the Yocto Project requires a local copy of the Yocto Project files.
103 (Ubuntu 10.04 or newer) as the host system for Poky, nothing in Poky is 126 You can get these files by downloading a Yocto Project release tarball and unpacking it,
104 distribution-specific. Consequently, other distributions should work as long 127 or by establishing a Git repository of the files.
105 as the appropriate prerequisites are installed. For example, we know of Poky being used 128 For information on both these methods, see
106 successfully on Redhat, SUSE, Gentoo and Slackware host systems. 129 <ulink url='http://www.yoctoproject.org/docs/1.1/dev-manual/dev-manual.html#getting-setup'>
107 For information on what you need to develop images using Yocto Project and Poky, 130 Getting Setup</ulink> section in
108 you should see the Yocto Project Quick Start on the <ulink url="http://www.yoctoproject.org"> 131 <ulink url='http://www.yoctoproject.org/docs/1.1/dev-manual/dev-manual.html'>
109 Yocto Project website</ulink>. 132 The Yocto Project Development Manual</ulink>.
110 The direct link to the quick start is
111 <ulink url='http://yoctoproject.org/docs/yocto-quick-start/yocto-project-qs.html'/>.
112 </para> 133 </para>
113</section> 134</section>
114 135
115<section id='intro-getit'>
116 <title>Obtaining Poky</title>
117
118 <section id='intro-getit-releases'>
119 <title>Releases</title>
120
121 <para>Periodically, we make releases of Poky available
122 at <ulink url='http://yoctoproject.org/downloads/poky/'/>.
123 These releases are more stable and more rigorously tested than the nightly development images.
124 </para>
125 </section>
126
127 <section id='intro-getit-nightly'>
128 <title>Nightly Builds</title>
129
130 <para>
131 We make nightly builds of Poky for testing purposes and to make the
132 latest developments available. The output from these builds is available
133 at <ulink url='http://autobuilder.yoctoproject.org/'/>.
134 The numbers used in the builds increase for each subsequent build and can be used to
135 reference a specific build.
136 </para>
137
138 <para>
139 Automated builds are available for "standard" Poky and for Poky SDKs and toolchains.
140 Additionally, testing versions such as poky-bleeding can be made available as
141 'experimental' builds.
142 The toolchains can
143 be used either as external standalone toolchains or can be combined with Poky as a
144 pre-built toolchain to reduce build time. Using the external toolchains is simply a
145 case of untarring the tarball into the root of your system (it only creates files in
146 <filename>/opt/poky</filename>) and then enabling the option
147 in <filename>local.conf</filename>.
148 </para>
149 </section>
150
151 <section id='intro-getit-dev'>
152 <title>Development Checkouts</title>
153
154 <para>
155 Poky is available from our git repository located at
156 git://git.yoctoproject.org/poky.git; a web interface to the repository
157 can be accessed at <ulink url='http://git.yoctoproject.org/'/>.
158 </para>
159
160 <para>
161 The 'master' is where the development work takes place and you should use this if you're
162 interested in working with the latest cutting-edge developments. It is possible for the trunk
163 to suffer temporary periods of instability while new features are developed.
164 If these periods of instability are undesirable, we recommend using one of the release branches.
165 </para>
166 </section>
167</section>
168</chapter> 136</chapter>
169<!-- 137<!--
170vim: expandtab tw=80 ts=4 138vim: expandtab tw=80 ts=4
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