diff options
author | Scott Rifenbark <scott.m.rifenbark@intel.com> | 2012-12-07 17:21:20 -0600 |
---|---|---|
committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2012-12-11 16:15:24 +0000 |
commit | eb8c9e1494692583f77d83267f78d5d88a79973d (patch) | |
tree | 14c2fc28df0901ba57430d1b36112281e53de455 /documentation | |
parent | 3bcdba62b186c554033357bb50de0b20d115a54d (diff) | |
download | poky-eb8c9e1494692583f77d83267f78d5d88a79973d.tar.gz |
Documentation: bsp-guide - Removed all trailing whitespace.
(From yocto-docs rev: 00d9bb4dcce101a77761418c1279ebfb9441b0d2)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'documentation')
-rw-r--r-- | documentation/bsp-guide/bsp-guide.xml | 18 | ||||
-rw-r--r-- | documentation/bsp-guide/bsp.xml | 546 |
2 files changed, 282 insertions, 282 deletions
diff --git a/documentation/bsp-guide/bsp-guide.xml b/documentation/bsp-guide/bsp-guide.xml index 5f7551ef38..4bbc0c5a4c 100644 --- a/documentation/bsp-guide/bsp-guide.xml +++ b/documentation/bsp-guide/bsp-guide.xml | |||
@@ -2,7 +2,7 @@ | |||
2 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" | 2 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" |
3 | [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > | 3 | [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > |
4 | 4 | ||
5 | <book id='bsp-guide' lang='en' | 5 | <book id='bsp-guide' lang='en' |
6 | xmlns:xi="http://www.w3.org/2003/XInclude" | 6 | xmlns:xi="http://www.w3.org/2003/XInclude" |
7 | xmlns="http://docbook.org/ns/docbook" | 7 | xmlns="http://docbook.org/ns/docbook" |
8 | > | 8 | > |
@@ -10,13 +10,13 @@ | |||
10 | 10 | ||
11 | <mediaobject> | 11 | <mediaobject> |
12 | <imageobject> | 12 | <imageobject> |
13 | <imagedata fileref='figures/bsp-title.png' | 13 | <imagedata fileref='figures/bsp-title.png' |
14 | format='SVG' | 14 | format='SVG' |
15 | align='center' scalefit='1' width='100%'/> | 15 | align='center' scalefit='1' width='100%'/> |
16 | </imageobject> | 16 | </imageobject> |
17 | </mediaobject> | 17 | </mediaobject> |
18 | 18 | ||
19 | <title></title> | 19 | <title></title> |
20 | 20 | ||
21 | <authorgroup> | 21 | <authorgroup> |
22 | <author> | 22 | <author> |
@@ -80,12 +80,12 @@ | |||
80 | 80 | ||
81 | <legalnotice> | 81 | <legalnotice> |
82 | <para> | 82 | <para> |
83 | Permission is granted to copy, distribute and/or modify this document under | 83 | Permission is granted to copy, distribute and/or modify this document under |
84 | the terms of the <ulink type="http" url="http://creativecommons.org/licenses/by-nc-sa/2.0/uk/">Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales</ulink> as published by Creative Commons. | 84 | the terms of the <ulink type="http" url="http://creativecommons.org/licenses/by-nc-sa/2.0/uk/">Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales</ulink> as published by Creative Commons. |
85 | </para> | 85 | </para> |
86 | <note> | 86 | <note> |
87 | Due to production processes, there could be differences between the Yocto Project | 87 | Due to production processes, there could be differences between the Yocto Project |
88 | documentation bundled in the release tarball and the | 88 | documentation bundled in the release tarball and the |
89 | <ulink url='&YOCTO_DOCS_BSP_URL;'>Yocto Project Board Support Package (BSP) Developer's Guide</ulink> on | 89 | <ulink url='&YOCTO_DOCS_BSP_URL;'>Yocto Project Board Support Package (BSP) Developer's Guide</ulink> on |
90 | the <ulink url='&YOCTO_HOME_URL;'>Yocto Project</ulink> website. | 90 | the <ulink url='&YOCTO_HOME_URL;'>Yocto Project</ulink> website. |
91 | For the latest version of this manual, see the manual on the website. | 91 | For the latest version of this manual, see the manual on the website. |
@@ -102,6 +102,6 @@ | |||
102 | --> | 102 | --> |
103 | 103 | ||
104 | </book> | 104 | </book> |
105 | <!-- | 105 | <!-- |
106 | vim: expandtab tw=80 ts=4 | 106 | vim: expandtab tw=80 ts=4 |
107 | --> | 107 | --> |
diff --git a/documentation/bsp-guide/bsp.xml b/documentation/bsp-guide/bsp.xml index 020e3508fa..94415a679c 100644 --- a/documentation/bsp-guide/bsp.xml +++ b/documentation/bsp-guide/bsp.xml | |||
@@ -8,13 +8,13 @@ | |||
8 | 8 | ||
9 | <para> | 9 | <para> |
10 | A Board Support Package (BSP) is a collection of information that | 10 | A Board Support Package (BSP) is a collection of information that |
11 | defines how to support a particular hardware device, set of devices, or | 11 | defines how to support a particular hardware device, set of devices, or |
12 | hardware platform. | 12 | hardware platform. |
13 | The BSP includes information about the hardware features | 13 | The BSP includes information about the hardware features |
14 | present on the device and kernel configuration information along with any | 14 | present on the device and kernel configuration information along with any |
15 | additional hardware drivers required. | 15 | additional hardware drivers required. |
16 | The BSP also lists any additional software | 16 | The BSP also lists any additional software |
17 | components required in addition to a generic Linux software stack for both | 17 | components required in addition to a generic Linux software stack for both |
18 | essential and optional platform features. | 18 | essential and optional platform features. |
19 | </para> | 19 | </para> |
20 | 20 | ||
@@ -22,8 +22,8 @@ | |||
22 | This guide presents information about BSP Layers, defines a structure for components | 22 | This guide presents information about BSP Layers, defines a structure for components |
23 | so that BSPs follow a commonly understood layout, discusses how to customize | 23 | so that BSPs follow a commonly understood layout, discusses how to customize |
24 | a recipe for a BSP, addresses BSP licensing, and provides information that | 24 | a recipe for a BSP, addresses BSP licensing, and provides information that |
25 | shows you how to create and manage a | 25 | shows you how to create and manage a |
26 | <link linkend='bsp-layers'>BSP Layer</link> using two Yocto Project | 26 | <link linkend='bsp-layers'>BSP Layer</link> using two Yocto Project |
27 | <link linkend='using-the-yocto-projects-bsp-tools'>BSP Tools</link>. | 27 | <link linkend='using-the-yocto-projects-bsp-tools'>BSP Tools</link>. |
28 | </para> | 28 | </para> |
29 | 29 | ||
@@ -32,7 +32,7 @@ | |||
32 | 32 | ||
33 | <para> | 33 | <para> |
34 | The BSP consists of a file structure inside a base directory. | 34 | The BSP consists of a file structure inside a base directory. |
35 | Collectively, you can think of the base directory and the file structure | 35 | Collectively, you can think of the base directory and the file structure |
36 | as a BSP Layer. | 36 | as a BSP Layer. |
37 | BSP Layers use the following naming convention: | 37 | BSP Layers use the following naming convention: |
38 | <literallayout class='monospaced'> | 38 | <literallayout class='monospaced'> |
@@ -42,13 +42,13 @@ | |||
42 | </para> | 42 | </para> |
43 | 43 | ||
44 | <para> | 44 | <para> |
45 | The layer's base directory (<filename>meta-<bsp_name></filename>) is the root | 45 | The layer's base directory (<filename>meta-<bsp_name></filename>) is the root |
46 | of the BSP Layer. | 46 | of the BSP Layer. |
47 | This root is what you add to the | 47 | This root is what you add to the |
48 | <ulink url='&YOCTO_DOCS_REF_URL;#var-BBLAYERS'><filename>BBLAYERS</filename></ulink> | 48 | <ulink url='&YOCTO_DOCS_REF_URL;#var-BBLAYERS'><filename>BBLAYERS</filename></ulink> |
49 | variable in the <filename>conf/bblayers.conf</filename> file found in the | 49 | variable in the <filename>conf/bblayers.conf</filename> file found in the |
50 | <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>. | 50 | <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>. |
51 | Adding the root allows the OpenEmbedded build system to recognize the BSP | 51 | Adding the root allows the OpenEmbedded build system to recognize the BSP |
52 | definition and from it build an image. | 52 | definition and from it build an image. |
53 | Here is an example: | 53 | Here is an example: |
54 | <literallayout class='monospaced'> | 54 | <literallayout class='monospaced'> |
@@ -70,9 +70,9 @@ | |||
70 | Some BSPs require additional layers on | 70 | Some BSPs require additional layers on |
71 | top of the BSP's root layer in order to be functional. | 71 | top of the BSP's root layer in order to be functional. |
72 | For these cases, you also need to add those layers to the | 72 | For these cases, you also need to add those layers to the |
73 | <filename>BBLAYERS</filename> variable in order to build the BSP. | 73 | <filename>BBLAYERS</filename> variable in order to build the BSP. |
74 | You must also specify in the "Dependencies" section of the BSP's | 74 | You must also specify in the "Dependencies" section of the BSP's |
75 | <filename>README</filename> file any requirements for additional | 75 | <filename>README</filename> file any requirements for additional |
76 | layers and, preferably, any | 76 | layers and, preferably, any |
77 | build instructions that might be contained elsewhere | 77 | build instructions that might be contained elsewhere |
78 | in the <filename>README</filename> file. | 78 | in the <filename>README</filename> file. |
@@ -80,13 +80,13 @@ | |||
80 | 80 | ||
81 | <para> | 81 | <para> |
82 | Some layers function as a layer to hold other BSP layers. | 82 | Some layers function as a layer to hold other BSP layers. |
83 | An example of this type of layer is the <filename>meta-intel</filename> layer. | 83 | An example of this type of layer is the <filename>meta-intel</filename> layer. |
84 | The <filename>meta-intel</filename> layer contains over 10 individual BSP layers. | 84 | The <filename>meta-intel</filename> layer contains over 10 individual BSP layers. |
85 | </para> | 85 | </para> |
86 | 86 | ||
87 | <para> | 87 | <para> |
88 | For more detailed information on layers, see the | 88 | For more detailed information on layers, see the |
89 | "<ulink url='&YOCTO_DOCS_DEV_URL;#understanding-and-creating-layers'>Understanding and Creating Layers</ulink>" | 89 | "<ulink url='&YOCTO_DOCS_DEV_URL;#understanding-and-creating-layers'>Understanding and Creating Layers</ulink>" |
90 | section of the Yocto Project Development Manual. | 90 | section of the Yocto Project Development Manual. |
91 | </para> | 91 | </para> |
92 | </section> | 92 | </section> |
@@ -96,38 +96,38 @@ | |||
96 | <title>Example Filesystem Layout</title> | 96 | <title>Example Filesystem Layout</title> |
97 | 97 | ||
98 | <para> | 98 | <para> |
99 | Providing a common form allows end-users to understand and become familiar | 99 | Providing a common form allows end-users to understand and become familiar |
100 | with the layout. | 100 | with the layout. |
101 | A common format also encourages standardization of software support of hardware. | 101 | A common format also encourages standardization of software support of hardware. |
102 | </para> | 102 | </para> |
103 | 103 | ||
104 | <para> | 104 | <para> |
105 | The proposed form does have elements that are specific to the | 105 | The proposed form does have elements that are specific to the |
106 | OpenEmbedded build system. | 106 | OpenEmbedded build system. |
107 | It is intended that this information can be | 107 | It is intended that this information can be |
108 | used by other build systems besides the OpenEmbedded build system | 108 | used by other build systems besides the OpenEmbedded build system |
109 | and that it will be simple | 109 | and that it will be simple |
110 | to extract information and convert it to other formats if required. | 110 | to extract information and convert it to other formats if required. |
111 | The OpenEmbedded build system, through its standard layers mechanism, can directly | 111 | The OpenEmbedded build system, through its standard layers mechanism, can directly |
112 | accept the format described as a layer. | 112 | accept the format described as a layer. |
113 | The BSP captures all | 113 | The BSP captures all |
114 | the hardware-specific details in one place in a standard format, which is | 114 | the hardware-specific details in one place in a standard format, which is |
115 | useful for any person wishing to use the hardware platform regardless of | 115 | useful for any person wishing to use the hardware platform regardless of |
116 | the build system they are using. | 116 | the build system they are using. |
117 | </para> | 117 | </para> |
118 | 118 | ||
119 | <para> | 119 | <para> |
120 | The BSP specification does not include a build system or other tools - | 120 | The BSP specification does not include a build system or other tools - |
121 | it is concerned with the hardware-specific components only. | 121 | it is concerned with the hardware-specific components only. |
122 | At the end-distribution point, you can ship the BSP combined with a build system | 122 | At the end-distribution point, you can ship the BSP combined with a build system |
123 | and other tools. | 123 | and other tools. |
124 | However, it is important to maintain the distinction that these | 124 | However, it is important to maintain the distinction that these |
125 | are separate components that happen to be combined in certain end products. | 125 | are separate components that happen to be combined in certain end products. |
126 | </para> | 126 | </para> |
127 | 127 | ||
128 | <para> | 128 | <para> |
129 | Before looking at the common form for the file structure inside a BSP Layer, | 129 | Before looking at the common form for the file structure inside a BSP Layer, |
130 | you should be aware that some requirements do exist in order for a BSP to | 130 | you should be aware that some requirements do exist in order for a BSP to |
131 | be considered compliant with the Yocto Project. | 131 | be considered compliant with the Yocto Project. |
132 | For that list of requirements, see the | 132 | For that list of requirements, see the |
133 | "<link linkend='released-bsp-requirements'>Released BSP Requirements</link>" | 133 | "<link linkend='released-bsp-requirements'>Released BSP Requirements</link>" |
@@ -137,19 +137,19 @@ | |||
137 | <para> | 137 | <para> |
138 | Below is the common form for the file structure inside a BSP Layer. | 138 | Below is the common form for the file structure inside a BSP Layer. |
139 | While you can use this basic form for the standard, realize that the actual structures | 139 | While you can use this basic form for the standard, realize that the actual structures |
140 | for specific BSPs could differ. | 140 | for specific BSPs could differ. |
141 | 141 | ||
142 | <literallayout class='monospaced'> | 142 | <literallayout class='monospaced'> |
143 | meta-<bsp_name>/ | 143 | meta-<bsp_name>/ |
144 | meta-<bsp_name>/<bsp_license_file> | 144 | meta-<bsp_name>/<bsp_license_file> |
145 | meta-<bsp_name>/README | 145 | meta-<bsp_name>/README |
146 | meta-<bsp_name>/README.sources | 146 | meta-<bsp_name>/README.sources |
147 | meta-<bsp_name>/binary/<bootable_images> | 147 | meta-<bsp_name>/binary/<bootable_images> |
148 | meta-<bsp_name>/conf/layer.conf | 148 | meta-<bsp_name>/conf/layer.conf |
149 | meta-<bsp_name>/conf/machine/*.conf | 149 | meta-<bsp_name>/conf/machine/*.conf |
150 | meta-<bsp_name>/recipes-bsp/* | 150 | meta-<bsp_name>/recipes-bsp/* |
151 | meta-<bsp_name>/recipes-core/* | 151 | meta-<bsp_name>/recipes-core/* |
152 | meta-<bsp_name>/recipes-graphics/* | 152 | meta-<bsp_name>/recipes-graphics/* |
153 | meta-<bsp_name>/recipes-kernel/linux/linux-yocto_<kernel_rev>.bbappend | 153 | meta-<bsp_name>/recipes-kernel/linux/linux-yocto_<kernel_rev>.bbappend |
154 | </literallayout> | 154 | </literallayout> |
155 | </para> | 155 | </para> |
@@ -209,8 +209,8 @@ | |||
209 | <para> | 209 | <para> |
210 | These optional files satisfy licensing requirements for the BSP. | 210 | These optional files satisfy licensing requirements for the BSP. |
211 | The type or types of files here can vary depending on the licensing requirements. | 211 | The type or types of files here can vary depending on the licensing requirements. |
212 | For example, in the Crown Bay BSP all licensing requirements are handled with the | 212 | For example, in the Crown Bay BSP all licensing requirements are handled with the |
213 | <filename>COPYING.MIT</filename> file. | 213 | <filename>COPYING.MIT</filename> file. |
214 | </para> | 214 | </para> |
215 | 215 | ||
216 | <para> | 216 | <para> |
@@ -229,9 +229,9 @@ | |||
229 | </para> | 229 | </para> |
230 | 230 | ||
231 | <para> | 231 | <para> |
232 | This file provides information on how to boot the live images that are optionally | 232 | This file provides information on how to boot the live images that are optionally |
233 | included in the <filename>binary/</filename> directory. | 233 | included in the <filename>binary/</filename> directory. |
234 | The <filename>README</filename> file also provides special information needed for | 234 | The <filename>README</filename> file also provides special information needed for |
235 | building the image. | 235 | building the image. |
236 | </para> | 236 | </para> |
237 | 237 | ||
@@ -271,20 +271,20 @@ | |||
271 | </para> | 271 | </para> |
272 | 272 | ||
273 | <para> | 273 | <para> |
274 | This optional area contains useful pre-built kernels and user-space filesystem | 274 | This optional area contains useful pre-built kernels and user-space filesystem |
275 | images appropriate to the target system. | 275 | images appropriate to the target system. |
276 | This directory typically contains graphical (e.g. sato) and minimal live images | 276 | This directory typically contains graphical (e.g. sato) and minimal live images |
277 | when the BSP tarball has been created and made available in the | 277 | when the BSP tarball has been created and made available in the |
278 | <ulink url='&YOCTO_HOME_URL;'>Yocto Project</ulink> website. | 278 | <ulink url='&YOCTO_HOME_URL;'>Yocto Project</ulink> website. |
279 | You can use these kernels and images to get a system running and quickly get started | 279 | You can use these kernels and images to get a system running and quickly get started |
280 | on development tasks. | 280 | on development tasks. |
281 | </para> | 281 | </para> |
282 | 282 | ||
283 | <para> | 283 | <para> |
284 | The exact types of binaries present are highly hardware-dependent. | 284 | The exact types of binaries present are highly hardware-dependent. |
285 | However, a README file should be present in the BSP Layer that explains how to use | 285 | However, a README file should be present in the BSP Layer that explains how to use |
286 | the kernels and images with the target hardware. | 286 | the kernels and images with the target hardware. |
287 | If pre-built binaries are present, source code to meet licensing requirements must also | 287 | If pre-built binaries are present, source code to meet licensing requirements must also |
288 | exist in some form. | 288 | exist in some form. |
289 | </para> | 289 | </para> |
290 | </section> | 290 | </section> |
@@ -299,12 +299,12 @@ | |||
299 | </para> | 299 | </para> |
300 | 300 | ||
301 | <para> | 301 | <para> |
302 | The <filename>conf/layer.conf</filename> file identifies the file structure as a | 302 | The <filename>conf/layer.conf</filename> file identifies the file structure as a |
303 | layer, identifies the | 303 | layer, identifies the |
304 | contents of the layer, and contains information about how the build | 304 | contents of the layer, and contains information about how the build |
305 | system should use it. | 305 | system should use it. |
306 | Generally, a standard boilerplate file such as the following works. | 306 | Generally, a standard boilerplate file such as the following works. |
307 | In the following example, you would replace "<filename>bsp</filename>" and | 307 | In the following example, you would replace "<filename>bsp</filename>" and |
308 | "<filename>_bsp</filename>" with the actual name | 308 | "<filename>_bsp</filename>" with the actual name |
309 | of the BSP (i.e. <filename><bsp_name></filename> from the example template). | 309 | of the BSP (i.e. <filename><bsp_name></filename> from the example template). |
310 | </para> | 310 | </para> |
@@ -325,7 +325,7 @@ | |||
325 | </para> | 325 | </para> |
326 | 326 | ||
327 | <para> | 327 | <para> |
328 | To illustrate the string substitutions, here are the last three statements from the Crown | 328 | To illustrate the string substitutions, here are the last three statements from the Crown |
329 | Bay <filename>conf/layer.conf</filename> file: | 329 | Bay <filename>conf/layer.conf</filename> file: |
330 | <literallayout class='monospaced'> | 330 | <literallayout class='monospaced'> |
331 | BBFILE_COLLECTIONS += "crownbay" | 331 | BBFILE_COLLECTIONS += "crownbay" |
@@ -351,10 +351,10 @@ | |||
351 | 351 | ||
352 | <para> | 352 | <para> |
353 | The machine files bind together all the information contained elsewhere | 353 | The machine files bind together all the information contained elsewhere |
354 | in the BSP into a format that the build system can understand. | 354 | in the BSP into a format that the build system can understand. |
355 | If the BSP supports multiple machines, multiple machine configuration files | 355 | If the BSP supports multiple machines, multiple machine configuration files |
356 | can be present. | 356 | can be present. |
357 | These filenames correspond to the values to which users have set the | 357 | These filenames correspond to the values to which users have set the |
358 | <ulink url='&YOCTO_DOCS_REF_URL;#var-MACHINE'><filename>MACHINE</filename></ulink> variable. | 358 | <ulink url='&YOCTO_DOCS_REF_URL;#var-MACHINE'><filename>MACHINE</filename></ulink> variable. |
359 | </para> | 359 | </para> |
360 | 360 | ||
@@ -370,13 +370,13 @@ | |||
370 | <para> | 370 | <para> |
371 | Each BSP Layer requires at least one machine file. | 371 | Each BSP Layer requires at least one machine file. |
372 | However, you can supply more than one file. | 372 | However, you can supply more than one file. |
373 | For example, in the Crown Bay BSP shown earlier in this section, the | 373 | For example, in the Crown Bay BSP shown earlier in this section, the |
374 | <filename>conf/machine</filename> directory contains two configuration files: | 374 | <filename>conf/machine</filename> directory contains two configuration files: |
375 | <filename>crownbay.conf</filename> and <filename>crownbay-noemgd.conf</filename>. | 375 | <filename>crownbay.conf</filename> and <filename>crownbay-noemgd.conf</filename>. |
376 | The <filename>crownbay.conf</filename> file is used for the Crown Bay BSP | 376 | The <filename>crownbay.conf</filename> file is used for the Crown Bay BSP |
377 | that supports the <trademark class='registered'>Intel</trademark> Embedded | 377 | that supports the <trademark class='registered'>Intel</trademark> Embedded |
378 | Media and Graphics Driver (<trademark class='registered'>Intel</trademark> | 378 | Media and Graphics Driver (<trademark class='registered'>Intel</trademark> |
379 | EMGD), while the <filename>crownbay-noemgd.conf</filename> file is used for the | 379 | EMGD), while the <filename>crownbay-noemgd.conf</filename> file is used for the |
380 | Crown Bay BSP that does not support the <trademark class='registered'>Intel</trademark> | 380 | Crown Bay BSP that does not support the <trademark class='registered'>Intel</trademark> |
381 | EMGD. | 381 | EMGD. |
382 | </para> | 382 | </para> |
@@ -384,23 +384,23 @@ | |||
384 | <para> | 384 | <para> |
385 | This <filename>crownbay.conf</filename> file could also include | 385 | This <filename>crownbay.conf</filename> file could also include |
386 | a hardware "tuning" file that is commonly used to | 386 | a hardware "tuning" file that is commonly used to |
387 | define the package architecture and specify | 387 | define the package architecture and specify |
388 | optimization flags, which are carefully chosen to give best | 388 | optimization flags, which are carefully chosen to give best |
389 | performance on a given processor. | 389 | performance on a given processor. |
390 | </para> | 390 | </para> |
391 | 391 | ||
392 | <para> | 392 | <para> |
393 | Tuning files are found in the <filename>meta/conf/machine/include</filename> | 393 | Tuning files are found in the <filename>meta/conf/machine/include</filename> |
394 | directory within the | 394 | directory within the |
395 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. | 395 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. |
396 | Tuning files can also reside in the BSP Layer itself. | 396 | Tuning files can also reside in the BSP Layer itself. |
397 | For example, the <filename>ia32-base.inc</filename> file resides in the | 397 | For example, the <filename>ia32-base.inc</filename> file resides in the |
398 | <filename>meta-intel</filename> BSP Layer in <filename>conf/machine/include</filename>. | 398 | <filename>meta-intel</filename> BSP Layer in <filename>conf/machine/include</filename>. |
399 | </para> | 399 | </para> |
400 | 400 | ||
401 | <para> | 401 | <para> |
402 | To use an include file, you simply include them in the machine configuration file. | 402 | To use an include file, you simply include them in the machine configuration file. |
403 | For example, the Crown Bay BSP <filename>crownbay.conf</filename> has the | 403 | For example, the Crown Bay BSP <filename>crownbay.conf</filename> has the |
404 | following statements: | 404 | following statements: |
405 | <literallayout class='monospaced'> | 405 | <literallayout class='monospaced'> |
406 | require conf/machine/include/tune-atom.inc | 406 | require conf/machine/include/tune-atom.inc |
@@ -415,19 +415,19 @@ | |||
415 | You can find these files in the BSP Layer at: | 415 | You can find these files in the BSP Layer at: |
416 | <literallayout class='monospaced'> | 416 | <literallayout class='monospaced'> |
417 | meta-<bsp_name>/recipes-bsp/* | 417 | meta-<bsp_name>/recipes-bsp/* |
418 | </literallayout> | 418 | </literallayout> |
419 | </para> | 419 | </para> |
420 | 420 | ||
421 | <para> | 421 | <para> |
422 | This optional directory contains miscellaneous recipe files for the BSP. | 422 | This optional directory contains miscellaneous recipe files for the BSP. |
423 | Most notably would be the formfactor files. | 423 | Most notably would be the formfactor files. |
424 | For example, in the Crown Bay BSP there is the | 424 | For example, in the Crown Bay BSP there is the |
425 | <filename>formfactor_0.0.bbappend</filename> file, which is an append file used | 425 | <filename>formfactor_0.0.bbappend</filename> file, which is an append file used |
426 | to augment the recipe that starts the build. | 426 | to augment the recipe that starts the build. |
427 | Furthermore, there are machine-specific settings used during the build that are | 427 | Furthermore, there are machine-specific settings used during the build that are |
428 | defined by the <filename>machconfig</filename> files. | 428 | defined by the <filename>machconfig</filename> files. |
429 | In the Crown Bay example, two <filename>machconfig</filename> files exist: | 429 | In the Crown Bay example, two <filename>machconfig</filename> files exist: |
430 | one that supports the | 430 | one that supports the |
431 | <trademark class='registered'>Intel</trademark> Embedded | 431 | <trademark class='registered'>Intel</trademark> Embedded |
432 | Media and Graphics Driver (<trademark class='registered'>Intel</trademark> | 432 | Media and Graphics Driver (<trademark class='registered'>Intel</trademark> |
433 | EMGD) and one that does not: | 433 | EMGD) and one that does not: |
@@ -440,10 +440,10 @@ | |||
440 | 440 | ||
441 | <note><para> | 441 | <note><para> |
442 | If a BSP does not have a formfactor entry, defaults are established according to | 442 | If a BSP does not have a formfactor entry, defaults are established according to |
443 | the formfactor configuration file that is installed by the main | 443 | the formfactor configuration file that is installed by the main |
444 | formfactor recipe | 444 | formfactor recipe |
445 | <filename>meta/recipes-bsp/formfactor/formfactor_0.0.bb</filename>, | 445 | <filename>meta/recipes-bsp/formfactor/formfactor_0.0.bb</filename>, |
446 | which is found in the | 446 | which is found in the |
447 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. | 447 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. |
448 | </para></note> | 448 | </para></note> |
449 | </section> | 449 | </section> |
@@ -453,19 +453,19 @@ | |||
453 | <para> | 453 | <para> |
454 | You can find these files in the BSP Layer at: | 454 | You can find these files in the BSP Layer at: |
455 | <literallayout class='monospaced'> | 455 | <literallayout class='monospaced'> |
456 | meta-<bsp_name>/recipes-graphics/* | 456 | meta-<bsp_name>/recipes-graphics/* |
457 | </literallayout> | 457 | </literallayout> |
458 | </para> | 458 | </para> |
459 | 459 | ||
460 | <para> | 460 | <para> |
461 | This optional directory contains recipes for the BSP if it has | 461 | This optional directory contains recipes for the BSP if it has |
462 | special requirements for graphics support. | 462 | special requirements for graphics support. |
463 | All files that are needed for the BSP to support a display are kept here. | 463 | All files that are needed for the BSP to support a display are kept here. |
464 | For example, the Crown Bay BSP contains two versions of the | 464 | For example, the Crown Bay BSP contains two versions of the |
465 | <filename>xorg.conf</filename> file. | 465 | <filename>xorg.conf</filename> file. |
466 | The version in <filename>crownbay</filename> builds a BSP that supports the | 466 | The version in <filename>crownbay</filename> builds a BSP that supports the |
467 | <trademark class='registered'>Intel</trademark> Embedded Media Graphics Driver (EMGD), | 467 | <trademark class='registered'>Intel</trademark> Embedded Media Graphics Driver (EMGD), |
468 | while the version in <filename>crownbay-noemgd</filename> builds | 468 | while the version in <filename>crownbay-noemgd</filename> builds |
469 | a BSP that supports Video Electronics Standards Association (VESA) graphics only: | 469 | a BSP that supports Video Electronics Standards Association (VESA) graphics only: |
470 | <literallayout class='monospaced'> | 470 | <literallayout class='monospaced'> |
471 | meta-crownbay/recipes-graphics/xorg-xserver/xserver-xf86-config_0.1.bbappend | 471 | meta-crownbay/recipes-graphics/xorg-xserver/xserver-xf86-config_0.1.bbappend |
@@ -488,29 +488,29 @@ | |||
488 | These files append your specific changes to the main kernel recipe you are using. | 488 | These files append your specific changes to the main kernel recipe you are using. |
489 | </para> | 489 | </para> |
490 | <para> | 490 | <para> |
491 | For your BSP, you typically want to use an existing Yocto Project kernel recipe found in the | 491 | For your BSP, you typically want to use an existing Yocto Project kernel recipe found in the |
492 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> | 492 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> |
493 | at <filename>meta/recipes-kernel/linux</filename>. | 493 | at <filename>meta/recipes-kernel/linux</filename>. |
494 | You can append your specific changes to the kernel recipe by using a | 494 | You can append your specific changes to the kernel recipe by using a |
495 | similarly named append file, which is located in the BSP Layer (e.g. | 495 | similarly named append file, which is located in the BSP Layer (e.g. |
496 | the <filename>meta-<bsp_name>/recipes-kernel/linux</filename> directory). | 496 | the <filename>meta-<bsp_name>/recipes-kernel/linux</filename> directory). |
497 | </para> | 497 | </para> |
498 | <para> | 498 | <para> |
499 | Suppose you are using the <filename>linux-yocto_3.4.bb</filename> recipe to build | 499 | Suppose you are using the <filename>linux-yocto_3.4.bb</filename> recipe to build |
500 | the kernel. | 500 | the kernel. |
501 | In other words, you have selected the kernel in your | 501 | In other words, you have selected the kernel in your |
502 | <filename><bsp_name>.conf</filename> file by adding these types | 502 | <filename><bsp_name>.conf</filename> file by adding these types |
503 | of statements: | 503 | of statements: |
504 | <literallayout class='monospaced'> | 504 | <literallayout class='monospaced'> |
505 | PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto" | 505 | PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto" |
506 | PREFERRED_VERSION_linux-yocto = "3.4%" | 506 | PREFERRED_VERSION_linux-yocto = "3.4%" |
507 | </literallayout> | 507 | </literallayout> |
508 | <note> | 508 | <note> |
509 | When the preferred provider is assumed by default, the | 509 | When the preferred provider is assumed by default, the |
510 | <filename>PREFERRED_PROVIDER</filename> statement does not appear in the | 510 | <filename>PREFERRED_PROVIDER</filename> statement does not appear in the |
511 | <filename><bsp_name>.conf</filename> file. | 511 | <filename><bsp_name>.conf</filename> file. |
512 | </note> | 512 | </note> |
513 | You would use the <filename>linux-yocto_3.4.bbappend</filename> file to append | 513 | You would use the <filename>linux-yocto_3.4.bbappend</filename> file to append |
514 | specific BSP settings to the kernel, thus configuring the kernel for your particular BSP. | 514 | specific BSP settings to the kernel, thus configuring the kernel for your particular BSP. |
515 | </para> | 515 | </para> |
516 | <para> | 516 | <para> |
@@ -545,11 +545,11 @@ | |||
545 | SRC_URI_crownbay = "git://git.yoctoproject.org/linux-yocto-3.4.git;protocol=git;nocheckout=1;branch=${KBRANCH},meta,emgd-1.14;name=machine,meta,emgd" | 545 | SRC_URI_crownbay = "git://git.yoctoproject.org/linux-yocto-3.4.git;protocol=git;nocheckout=1;branch=${KBRANCH},meta,emgd-1.14;name=machine,meta,emgd" |
546 | SRC_URI_crownbay-noemgd = "git://git.yoctoproject.org/linux-yocto-3.4.git;protocol=git;nocheckout=1;branch=${KBRANCH},meta;name=machine,meta" | 546 | SRC_URI_crownbay-noemgd = "git://git.yoctoproject.org/linux-yocto-3.4.git;protocol=git;nocheckout=1;branch=${KBRANCH},meta;name=machine,meta" |
547 | </literallayout> | 547 | </literallayout> |
548 | This append file contains statements used to support the Crown Bay BSP for both | 548 | This append file contains statements used to support the Crown Bay BSP for both |
549 | <trademark class='registered'>Intel</trademark> EMGD and the VESA graphics. | 549 | <trademark class='registered'>Intel</trademark> EMGD and the VESA graphics. |
550 | The build process, in this case, recognizes and uses only the statements that | 550 | The build process, in this case, recognizes and uses only the statements that |
551 | apply to the defined machine name - <filename>crownbay</filename> in this case. | 551 | apply to the defined machine name - <filename>crownbay</filename> in this case. |
552 | So, the applicable statements in the <filename>linux-yocto_3.4.bbappend</filename> | 552 | So, the applicable statements in the <filename>linux-yocto_3.4.bbappend</filename> |
553 | file are follows: | 553 | file are follows: |
554 | <literallayout class='monospaced'> | 554 | <literallayout class='monospaced'> |
555 | FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:" | 555 | FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:" |
@@ -562,46 +562,46 @@ | |||
562 | SRCREV_meta_pn-linux-yocto_crownbay ?= "9e3bdb7344054264b750e53fbbb6394cc1c942ac" | 562 | SRCREV_meta_pn-linux-yocto_crownbay ?= "9e3bdb7344054264b750e53fbbb6394cc1c942ac" |
563 | SRCREV_emgd_pn-linux-yocto_crownbay ?= "86643bdd8cbad616a161ab91f51108cf0da827bc" | 563 | SRCREV_emgd_pn-linux-yocto_crownbay ?= "86643bdd8cbad616a161ab91f51108cf0da827bc" |
564 | </literallayout> | 564 | </literallayout> |
565 | The append file defines <filename>crownbay</filename> as the | 565 | The append file defines <filename>crownbay</filename> as the |
566 | <ulink url='&YOCTO_DOCS_REF_URL;#var-COMPATIBLE_MACHINE'><filename>COMPATIBLE_MACHINE</filename></ulink> | 566 | <ulink url='&YOCTO_DOCS_REF_URL;#var-COMPATIBLE_MACHINE'><filename>COMPATIBLE_MACHINE</filename></ulink> |
567 | and uses the | 567 | and uses the |
568 | <ulink url='&YOCTO_DOCS_REF_URL;#var-KMACHINE'><filename>KMACHINE</filename></ulink> variable to | 568 | <ulink url='&YOCTO_DOCS_REF_URL;#var-KMACHINE'><filename>KMACHINE</filename></ulink> variable to |
569 | ensure the machine name used by the OpenEmbedded build system maps to the | 569 | ensure the machine name used by the OpenEmbedded build system maps to the |
570 | machine name used by the Linux Yocto kernel. | 570 | machine name used by the Linux Yocto kernel. |
571 | The file also uses the optional | 571 | The file also uses the optional |
572 | <ulink url='&YOCTO_DOCS_REF_URL;#var-KBRANCH'><filename>KBRANCH</filename></ulink> variable | 572 | <ulink url='&YOCTO_DOCS_REF_URL;#var-KBRANCH'><filename>KBRANCH</filename></ulink> variable |
573 | to ensure the build process uses the <filename>standard/default/crownbay</filename> | 573 | to ensure the build process uses the <filename>standard/default/crownbay</filename> |
574 | kernel branch. | 574 | kernel branch. |
575 | Finally, the append file points to specific commits in the | 575 | Finally, the append file points to specific commits in the |
576 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> Git | 576 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> Git |
577 | repository and the <filename>meta</filename> Git repository branches to identify the | 577 | repository and the <filename>meta</filename> Git repository branches to identify the |
578 | exact kernel needed to build the Crown Bay BSP. | 578 | exact kernel needed to build the Crown Bay BSP. |
579 | <note> | 579 | <note> |
580 | For <filename>crownbay</filename>, a specific commit is also needed to point | 580 | For <filename>crownbay</filename>, a specific commit is also needed to point |
581 | to the branch that supports EMGD graphics. | 581 | to the branch that supports EMGD graphics. |
582 | At a minimum, every BSP points to the | 582 | At a minimum, every BSP points to the |
583 | <filename>machine</filename> and <filename>meta</filename> commits. | 583 | <filename>machine</filename> and <filename>meta</filename> commits. |
584 | </note> | 584 | </note> |
585 | </para> | 585 | </para> |
586 | 586 | ||
587 | <para> | 587 | <para> |
588 | One thing missing in this particular BSP, which you will typically need when | 588 | One thing missing in this particular BSP, which you will typically need when |
589 | developing a BSP, is the kernel configuration file (<filename>.config</filename>) for your BSP. | 589 | developing a BSP, is the kernel configuration file (<filename>.config</filename>) for your BSP. |
590 | When developing a BSP, you probably have a kernel configuration file or a set of kernel | 590 | When developing a BSP, you probably have a kernel configuration file or a set of kernel |
591 | configuration files that, when taken together, define the kernel configuration for your BSP. | 591 | configuration files that, when taken together, define the kernel configuration for your BSP. |
592 | You can accomplish this definition by putting the configurations in a file or a set of files | 592 | You can accomplish this definition by putting the configurations in a file or a set of files |
593 | inside a directory located at the same level as your kernel's append file and having the same | 593 | inside a directory located at the same level as your kernel's append file and having the same |
594 | name as the kernel's main recipe file. | 594 | name as the kernel's main recipe file. |
595 | With all these conditions met, simply reference those files in a | 595 | With all these conditions met, simply reference those files in a |
596 | <filename>SRC_URI</filename> statement in the append file. | 596 | <filename>SRC_URI</filename> statement in the append file. |
597 | </para> | 597 | </para> |
598 | 598 | ||
599 | <para> | 599 | <para> |
600 | For example, suppose you had a some configuration options in a file called | 600 | For example, suppose you had a some configuration options in a file called |
601 | <filename>network_configs.cfg</filename>. | 601 | <filename>network_configs.cfg</filename>. |
602 | You can place that file inside a directory named <filename>/linux-yocto</filename> and then add | 602 | You can place that file inside a directory named <filename>/linux-yocto</filename> and then add |
603 | a <filename>SRC_URI</filename> statement such as the following to the append file. | 603 | a <filename>SRC_URI</filename> statement such as the following to the append file. |
604 | When the OpenEmbedded build system builds the kernel, the configuration options are | 604 | When the OpenEmbedded build system builds the kernel, the configuration options are |
605 | picked up and applied. | 605 | picked up and applied. |
606 | <literallayout class='monospaced'> | 606 | <literallayout class='monospaced'> |
607 | SRC_URI += "file://network_configs.cfg" | 607 | SRC_URI += "file://network_configs.cfg" |
@@ -609,7 +609,7 @@ | |||
609 | </para> | 609 | </para> |
610 | 610 | ||
611 | <para> | 611 | <para> |
612 | To group related configurations into multiple files, you perform a similar procedure. | 612 | To group related configurations into multiple files, you perform a similar procedure. |
613 | Here is an example that groups separate configurations specifically for Ethernet and graphics | 613 | Here is an example that groups separate configurations specifically for Ethernet and graphics |
614 | into their own files and adds the configurations | 614 | into their own files and adds the configurations |
615 | by using a <filename>SRC_URI</filename> statement like the following in your append file: | 615 | by using a <filename>SRC_URI</filename> statement like the following in your append file: |
@@ -621,9 +621,9 @@ | |||
621 | </para> | 621 | </para> |
622 | 622 | ||
623 | <para> | 623 | <para> |
624 | The <filename>FILESEXTRAPATHS</filename> variable is in boilerplate form in the | 624 | The <filename>FILESEXTRAPATHS</filename> variable is in boilerplate form in the |
625 | previous example in order to make it easy to do that. | 625 | previous example in order to make it easy to do that. |
626 | This variable must be in your layer or BitBake will not find the patches or | 626 | This variable must be in your layer or BitBake will not find the patches or |
627 | configurations even if you have them in your <filename>SRC_URI</filename>. | 627 | configurations even if you have them in your <filename>SRC_URI</filename>. |
628 | The <filename>FILESEXTRAPATHS</filename> variable enables the build process to | 628 | The <filename>FILESEXTRAPATHS</filename> variable enables the build process to |
629 | find those configuration files. | 629 | find those configuration files. |
@@ -632,23 +632,23 @@ | |||
632 | <note> | 632 | <note> |
633 | <para> | 633 | <para> |
634 | Other methods exist to accomplish grouping and defining configuration options. | 634 | Other methods exist to accomplish grouping and defining configuration options. |
635 | For example, if you are working with a local clone of the kernel repository, | 635 | For example, if you are working with a local clone of the kernel repository, |
636 | you could checkout the kernel's <filename>meta</filename> branch, make your changes, | 636 | you could checkout the kernel's <filename>meta</filename> branch, make your changes, |
637 | and then push the changes to the local bare clone of the kernel. | 637 | and then push the changes to the local bare clone of the kernel. |
638 | The result is that you directly add configuration options to the | 638 | The result is that you directly add configuration options to the |
639 | <filename>meta</filename> branch for your BSP. | 639 | <filename>meta</filename> branch for your BSP. |
640 | The configuration options will likely end up in that location anyway if the BSP gets | 640 | The configuration options will likely end up in that location anyway if the BSP gets |
641 | added to the Yocto Project. | 641 | added to the Yocto Project. |
642 | </para> | 642 | </para> |
643 | 643 | ||
644 | <para> | 644 | <para> |
645 | In general, however, the Yocto Project maintainers take care of moving the | 645 | In general, however, the Yocto Project maintainers take care of moving the |
646 | <filename>SRC_URI</filename>-specified | 646 | <filename>SRC_URI</filename>-specified |
647 | configuration options to the kernel's <filename>meta</filename> branch. | 647 | configuration options to the kernel's <filename>meta</filename> branch. |
648 | Not only is it easier for BSP developers to not have to worry about putting those | 648 | Not only is it easier for BSP developers to not have to worry about putting those |
649 | configurations in the branch, but having the maintainers do it allows them to apply | 649 | configurations in the branch, but having the maintainers do it allows them to apply |
650 | 'global' knowledge about the kinds of common configuration options multiple BSPs in | 650 | 'global' knowledge about the kinds of common configuration options multiple BSPs in |
651 | the tree are typically using. | 651 | the tree are typically using. |
652 | This allows for promotion of common configurations into common features. | 652 | This allows for promotion of common configurations into common features. |
653 | </para> | 653 | </para> |
654 | </note> | 654 | </note> |
@@ -661,7 +661,7 @@ | |||
661 | <para> | 661 | <para> |
662 | Certain requirements exist for a released BSP to be considered | 662 | Certain requirements exist for a released BSP to be considered |
663 | compliant with the Yocto Project. | 663 | compliant with the Yocto Project. |
664 | Additionally, a single recommendation also exists. | 664 | Additionally, a single recommendation also exists. |
665 | This section describes the requirements and recommendation for | 665 | This section describes the requirements and recommendation for |
666 | released BSPs. | 666 | released BSPs. |
667 | </para> | 667 | </para> |
@@ -675,55 +675,55 @@ | |||
675 | <listitem><para>The requirements here assume the BSP layer is a well-formed, "legal" | 675 | <listitem><para>The requirements here assume the BSP layer is a well-formed, "legal" |
676 | layer that can be added to the Yocto Project. | 676 | layer that can be added to the Yocto Project. |
677 | For guidelines on creating a layer that meets these base requirements, see the | 677 | For guidelines on creating a layer that meets these base requirements, see the |
678 | "<link linkend='bsp-layers'>BSP Layers</link>" and the | 678 | "<link linkend='bsp-layers'>BSP Layers</link>" and the |
679 | "<ulink url='&YOCTO_DOCS_DEV_URL;#understanding-and-creating-layers'>Understanding | 679 | "<ulink url='&YOCTO_DOCS_DEV_URL;#understanding-and-creating-layers'>Understanding |
680 | and Creating Layers"</ulink> in the Yocto Project Development Manual.</para></listitem> | 680 | and Creating Layers"</ulink> in the Yocto Project Development Manual.</para></listitem> |
681 | <listitem><para>The requirements in this section apply regardless of how you | 681 | <listitem><para>The requirements in this section apply regardless of how you |
682 | ultimately package a BSP. | 682 | ultimately package a BSP. |
683 | You should consult the packaging and distribution guidelines for your | 683 | You should consult the packaging and distribution guidelines for your |
684 | specific release process. | 684 | specific release process. |
685 | For an example of packaging and distribution requirements, see the | 685 | For an example of packaging and distribution requirements, see the |
686 | <ulink url='https://wiki.yoctoproject.org/wiki/Third_Party_BSP_Release_Process'>Third | 686 | <ulink url='https://wiki.yoctoproject.org/wiki/Third_Party_BSP_Release_Process'>Third |
687 | Party BSP Release Process</ulink> wiki page.</para></listitem> | 687 | Party BSP Release Process</ulink> wiki page.</para></listitem> |
688 | <listitem><para>The requirements for the BSP as it is made available to a developer | 688 | <listitem><para>The requirements for the BSP as it is made available to a developer |
689 | are completely independent of the released form of the BSP. | 689 | are completely independent of the released form of the BSP. |
690 | For example, the BSP metadata can be contained within a Git repository | 690 | For example, the BSP metadata can be contained within a Git repository |
691 | and could have a directory structure completely different from what appears | 691 | and could have a directory structure completely different from what appears |
692 | in the officially released BSP layer.</para></listitem> | 692 | in the officially released BSP layer.</para></listitem> |
693 | <listitem><para>It is not required that specific packages or package | 693 | <listitem><para>It is not required that specific packages or package |
694 | modifications exist in the BSP layer, beyond the requirements for general | 694 | modifications exist in the BSP layer, beyond the requirements for general |
695 | compliance with the Yocto Project. | 695 | compliance with the Yocto Project. |
696 | For example, no requirement exists dictating that a specific kernel or | 696 | For example, no requirement exists dictating that a specific kernel or |
697 | kernel version be used in a given BSP.</para></listitem> | 697 | kernel version be used in a given BSP.</para></listitem> |
698 | </itemizedlist> | 698 | </itemizedlist> |
699 | </para> | 699 | </para> |
700 | 700 | ||
701 | <para> | 701 | <para> |
702 | Following are the requirements for a released BSP that conforms to the | 702 | Following are the requirements for a released BSP that conforms to the |
703 | Yocto Project: | 703 | Yocto Project: |
704 | <itemizedlist> | 704 | <itemizedlist> |
705 | <listitem><para><emphasis>Layer Name:</emphasis> | 705 | <listitem><para><emphasis>Layer Name:</emphasis> |
706 | The BSP must have a layer name that follows the Yocto | 706 | The BSP must have a layer name that follows the Yocto |
707 | Project standards. | 707 | Project standards. |
708 | For information on BSP layer names, see the | 708 | For information on BSP layer names, see the |
709 | "<link linkend='bsp-layers'>BSP Layers</link>" section. | 709 | "<link linkend='bsp-layers'>BSP Layers</link>" section. |
710 | </para></listitem> | 710 | </para></listitem> |
711 | <listitem><para><emphasis>File System Layout:</emphasis> | 711 | <listitem><para><emphasis>File System Layout:</emphasis> |
712 | When possible, use the same directory names in your | 712 | When possible, use the same directory names in your |
713 | BSP layer as listed in the <filename>recipes.txt</filename> file. | 713 | BSP layer as listed in the <filename>recipes.txt</filename> file. |
714 | In particular, you should place recipes | 714 | In particular, you should place recipes |
715 | (<filename>.bb</filename> files) and recipe | 715 | (<filename>.bb</filename> files) and recipe |
716 | modifications (<filename>.bbappend</filename> files) into | 716 | modifications (<filename>.bbappend</filename> files) into |
717 | <filename>recipes-*</filename> subdirectories by functional area | 717 | <filename>recipes-*</filename> subdirectories by functional area |
718 | as outlined in <filename>recipes.txt</filename>. | 718 | as outlined in <filename>recipes.txt</filename>. |
719 | If you cannot find a category in <filename>recipes.txt</filename> | 719 | If you cannot find a category in <filename>recipes.txt</filename> |
720 | to fit a particular recipe, you can make up your own | 720 | to fit a particular recipe, you can make up your own |
721 | <filename>recipe-*</filename> subdirectory. | 721 | <filename>recipe-*</filename> subdirectory. |
722 | You can find <filename>recipes.txt</filename> in the | 722 | You can find <filename>recipes.txt</filename> in the |
723 | <filename>meta</filename> directory of the | 723 | <filename>meta</filename> directory of the |
724 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>, | 724 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>, |
725 | or in the OpenEmbedded Core Layer | 725 | or in the OpenEmbedded Core Layer |
726 | (<filename>openembedded-core</filename>) found at | 726 | (<filename>openembedded-core</filename>) found at |
727 | <ulink url='http://git.openembedded.org/openembedded-core/tree/meta'></ulink>. | 727 | <ulink url='http://git.openembedded.org/openembedded-core/tree/meta'></ulink>. |
728 | </para> | 728 | </para> |
729 | <para>Within any particular <filename>recipes-*</filename> category, the layout | 729 | <para>Within any particular <filename>recipes-*</filename> category, the layout |
@@ -733,68 +733,68 @@ | |||
733 | In other words, make sure you place related files in appropriately | 733 | In other words, make sure you place related files in appropriately |
734 | related <filename>recipes-*</filename> subdirectories specific to the | 734 | related <filename>recipes-*</filename> subdirectories specific to the |
735 | recipe's function, or within a subdirectory containing a set of closely-related | 735 | recipe's function, or within a subdirectory containing a set of closely-related |
736 | recipes. | 736 | recipes. |
737 | The recipes themselves should follow the general guidelines | 737 | The recipes themselves should follow the general guidelines |
738 | for recipes used in the Yocto Project found in the | 738 | for recipes used in the Yocto Project found in the |
739 | <ulink url='https://wiki.yoctoproject.org/wiki/Recipe_%26_Patch_Style_Guide'>Yocto | 739 | <ulink url='https://wiki.yoctoproject.org/wiki/Recipe_%26_Patch_Style_Guide'>Yocto |
740 | Recipe and Patch Style Guide</ulink>.</para></listitem> | 740 | Recipe and Patch Style Guide</ulink>.</para></listitem> |
741 | <listitem><para><emphasis>License File:</emphasis> | 741 | <listitem><para><emphasis>License File:</emphasis> |
742 | You must include a license file in the | 742 | You must include a license file in the |
743 | <filename>meta-<bsp_name></filename> directory. | 743 | <filename>meta-<bsp_name></filename> directory. |
744 | This license covers the BSP metadata as a whole. | 744 | This license covers the BSP metadata as a whole. |
745 | You must specify which license to use since there is no | 745 | You must specify which license to use since there is no |
746 | default license if one is not specified. | 746 | default license if one is not specified. |
747 | See the | 747 | See the |
748 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi/meta-intel/tree/meta-fri2/COPYING.MIT'><filename>COPYING.MIT</filename></ulink> | 748 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi/meta-intel/tree/meta-fri2/COPYING.MIT'><filename>COPYING.MIT</filename></ulink> |
749 | file for the Fish River Island 2 BSP in the <filename>meta-fri2</filename> BSP layer | 749 | file for the Fish River Island 2 BSP in the <filename>meta-fri2</filename> BSP layer |
750 | as an example.</para></listitem> | 750 | as an example.</para></listitem> |
751 | <listitem><para><emphasis>README File:</emphasis> | 751 | <listitem><para><emphasis>README File:</emphasis> |
752 | You must include a <filename>README</filename> file in the | 752 | You must include a <filename>README</filename> file in the |
753 | <filename>meta-<bsp_name></filename> directory. | 753 | <filename>meta-<bsp_name></filename> directory. |
754 | See the | 754 | See the |
755 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi/meta-intel/tree/meta-fri2/README'><filename>README</filename></ulink> | 755 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi/meta-intel/tree/meta-fri2/README'><filename>README</filename></ulink> |
756 | file for the Fish River Island 2 BSP in the <filename>meta-fri2</filename> BSP layer | 756 | file for the Fish River Island 2 BSP in the <filename>meta-fri2</filename> BSP layer |
757 | as an example.</para> | 757 | as an example.</para> |
758 | <para>At a minimum, the <filename>README</filename> file should | 758 | <para>At a minimum, the <filename>README</filename> file should |
759 | contain the following: | 759 | contain the following: |
760 | <itemizedlist> | 760 | <itemizedlist> |
761 | <listitem><para>A brief description about the hardware the BSP | 761 | <listitem><para>A brief description about the hardware the BSP |
762 | targets.</para></listitem> | 762 | targets.</para></listitem> |
763 | <listitem><para>A list of all the dependencies | 763 | <listitem><para>A list of all the dependencies |
764 | on which a BSP layer depends. | 764 | on which a BSP layer depends. |
765 | These dependencies are typically a list of required layers needed | 765 | These dependencies are typically a list of required layers needed |
766 | to build the BSP. | 766 | to build the BSP. |
767 | However, the dependencies should also contain information regarding | 767 | However, the dependencies should also contain information regarding |
768 | any other dependencies the BSP might have.</para></listitem> | 768 | any other dependencies the BSP might have.</para></listitem> |
769 | <listitem><para>Any required special licensing information. | 769 | <listitem><para>Any required special licensing information. |
770 | For example, this information includes information on | 770 | For example, this information includes information on |
771 | special variables needed to satisfy a EULA, | 771 | special variables needed to satisfy a EULA, |
772 | or instructions on information needed to build or distribute | 772 | or instructions on information needed to build or distribute |
773 | binaries built from the BSP metadata.</para></listitem> | 773 | binaries built from the BSP metadata.</para></listitem> |
774 | <listitem><para>The name and contact information for the | 774 | <listitem><para>The name and contact information for the |
775 | BSP layer maintainer. | 775 | BSP layer maintainer. |
776 | This is the person to whom patches and questions should | 776 | This is the person to whom patches and questions should |
777 | be sent.</para></listitem> | 777 | be sent.</para></listitem> |
778 | <listitem><para>Instructions on how to build the BSP using the BSP | 778 | <listitem><para>Instructions on how to build the BSP using the BSP |
779 | layer.</para></listitem> | 779 | layer.</para></listitem> |
780 | <listitem><para>Instructions on how to boot the BSP build from | 780 | <listitem><para>Instructions on how to boot the BSP build from |
781 | the BSP layer.</para></listitem> | 781 | the BSP layer.</para></listitem> |
782 | <listitem><para>Instructions on how to boot the binary images | 782 | <listitem><para>Instructions on how to boot the binary images |
783 | contained in the <filename>/binary</filename> directory, | 783 | contained in the <filename>/binary</filename> directory, |
784 | if present.</para></listitem> | 784 | if present.</para></listitem> |
785 | <listitem><para>Information on any known bugs or issues that users | 785 | <listitem><para>Information on any known bugs or issues that users |
786 | should know about when either building or booting the BSP | 786 | should know about when either building or booting the BSP |
787 | binaries.</para></listitem> | 787 | binaries.</para></listitem> |
788 | </itemizedlist></para></listitem> | 788 | </itemizedlist></para></listitem> |
789 | <listitem><para><emphasis>README.sources File:</emphasis> | 789 | <listitem><para><emphasis>README.sources File:</emphasis> |
790 | You must include a <filename>README.sources</filename> in the | 790 | You must include a <filename>README.sources</filename> in the |
791 | <filename>meta-<bsp_name></filename> directory. | 791 | <filename>meta-<bsp_name></filename> directory. |
792 | This file specifies exactly where you can find the sources used to | 792 | This file specifies exactly where you can find the sources used to |
793 | generate the binary images contained in the | 793 | generate the binary images contained in the |
794 | <filename>/binary</filename> directory, if present. | 794 | <filename>/binary</filename> directory, if present. |
795 | See the | 795 | See the |
796 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi/meta-intel/tree/meta-fri2/README.sources'><filename>README.sources</filename></ulink> | 796 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi/meta-intel/tree/meta-fri2/README.sources'><filename>README.sources</filename></ulink> |
797 | file for the Fish River Island 2 BSP in the <filename>meta-fri2</filename> BSP layer | 797 | file for the Fish River Island 2 BSP in the <filename>meta-fri2</filename> BSP layer |
798 | as an example.</para></listitem> | 798 | as an example.</para></listitem> |
799 | <listitem><para><emphasis>Layer Configuration File:</emphasis> | 799 | <listitem><para><emphasis>Layer Configuration File:</emphasis> |
800 | You must include a <filename>conf/layer.conf</filename> in the | 800 | You must include a <filename>conf/layer.conf</filename> in the |
@@ -806,19 +806,19 @@ | |||
806 | in the <filename>meta-<bsp_name></filename> directory. | 806 | in the <filename>meta-<bsp_name></filename> directory. |
807 | This configuration file defines a machine target that can be built | 807 | This configuration file defines a machine target that can be built |
808 | using the BSP layer. | 808 | using the BSP layer. |
809 | Multiple machine configuration files define variations of machine | 809 | Multiple machine configuration files define variations of machine |
810 | configurations that are supported by the BSP. | 810 | configurations that are supported by the BSP. |
811 | If a BSP supports multiple machine variations, you need to | 811 | If a BSP supports multiple machine variations, you need to |
812 | adequately describe each variation in the BSP | 812 | adequately describe each variation in the BSP |
813 | <filename>README</filename> file. | 813 | <filename>README</filename> file. |
814 | Do not use multiple machine configuration files to describe disparate | 814 | Do not use multiple machine configuration files to describe disparate |
815 | hardware. | 815 | hardware. |
816 | If you do have very different targets, you should create separate | 816 | If you do have very different targets, you should create separate |
817 | BSP layers for each target. | 817 | BSP layers for each target. |
818 | <note>It is completely possible for a developer to structure the | 818 | <note>It is completely possible for a developer to structure the |
819 | working repository as a conglomeration of unrelated BSP | 819 | working repository as a conglomeration of unrelated BSP |
820 | files, and to possibly generate specifically targeted 'release' BSPs | 820 | files, and to possibly generate specifically targeted 'release' BSPs |
821 | from that directory using scripts or some other mechanism. | 821 | from that directory using scripts or some other mechanism. |
822 | Such considerations are outside the scope of this document.</note> | 822 | Such considerations are outside the scope of this document.</note> |
823 | </para></listitem> | 823 | </para></listitem> |
824 | </itemizedlist> | 824 | </itemizedlist> |
@@ -829,26 +829,26 @@ | |||
829 | <title>Released BSP Recommendations</title> | 829 | <title>Released BSP Recommendations</title> |
830 | 830 | ||
831 | <para> | 831 | <para> |
832 | Following are recommendations for a released BSP that conforms to the | 832 | Following are recommendations for a released BSP that conforms to the |
833 | Yocto Project: | 833 | Yocto Project: |
834 | <itemizedlist> | 834 | <itemizedlist> |
835 | <listitem><para><emphasis>Bootable Images:</emphasis> | 835 | <listitem><para><emphasis>Bootable Images:</emphasis> |
836 | BSP releases | 836 | BSP releases |
837 | can contain one or more bootable images. | 837 | can contain one or more bootable images. |
838 | Including bootable images allows users to easily try out the BSP | 838 | Including bootable images allows users to easily try out the BSP |
839 | on their own hardware.</para> | 839 | on their own hardware.</para> |
840 | <para>In some cases, it might not be convenient to include a | 840 | <para>In some cases, it might not be convenient to include a |
841 | bootable image. | 841 | bootable image. |
842 | In this case, you might want to make two versions of the | 842 | In this case, you might want to make two versions of the |
843 | BSP available: one that contains binary images, and one | 843 | BSP available: one that contains binary images, and one |
844 | that does not. | 844 | that does not. |
845 | The version that does not contain bootable images avoids | 845 | The version that does not contain bootable images avoids |
846 | unnecessary download times for users not interested in the images. | 846 | unnecessary download times for users not interested in the images. |
847 | </para> | 847 | </para> |
848 | <para>If you need to distribute a BSP and include bootable images or build kernel and | 848 | <para>If you need to distribute a BSP and include bootable images or build kernel and |
849 | filesystems meant to allow users to boot the BSP for evaluation | 849 | filesystems meant to allow users to boot the BSP for evaluation |
850 | purposes, you should put the images and artifacts within a | 850 | purposes, you should put the images and artifacts within a |
851 | <filename>binary/</filename> subdirectory located in the | 851 | <filename>binary/</filename> subdirectory located in the |
852 | <filename>meta-<bsp_name></filename> directory. | 852 | <filename>meta-<bsp_name></filename> directory. |
853 | <note>If you do include a bootable image as part of the BSP and the image | 853 | <note>If you do include a bootable image as part of the BSP and the image |
854 | was built by software covered by the GPL or other open source licenses, | 854 | was built by software covered by the GPL or other open source licenses, |
@@ -856,10 +856,10 @@ | |||
856 | and meet all licensing requirements, which could include distribution | 856 | and meet all licensing requirements, which could include distribution |
857 | of source files.</note></para></listitem> | 857 | of source files.</note></para></listitem> |
858 | <listitem><para><emphasis>Use a Yocto Linux Kernel:</emphasis> | 858 | <listitem><para><emphasis>Use a Yocto Linux Kernel:</emphasis> |
859 | Kernel recipes in the BSP should be based on a Yocto Linux kernel. | 859 | Kernel recipes in the BSP should be based on a Yocto Linux kernel. |
860 | Basing your recipes on these kernels reduces the costs for maintaining | 860 | Basing your recipes on these kernels reduces the costs for maintaining |
861 | the BSP and increases its scalability. | 861 | the BSP and increases its scalability. |
862 | See the <filename>Yocto Linux Kernel</filename> category in the | 862 | See the <filename>Yocto Linux Kernel</filename> category in the |
863 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi'>Source Repositories</ulink> | 863 | <ulink url='&YOCTO_GIT_URL;/cgit.cgi'>Source Repositories</ulink> |
864 | for these kernels.</para></listitem> | 864 | for these kernels.</para></listitem> |
865 | </itemizedlist> | 865 | </itemizedlist> |
@@ -883,18 +883,18 @@ | |||
883 | </para> | 883 | </para> |
884 | 884 | ||
885 | <para> | 885 | <para> |
886 | To better understand this, consider an example that customizes a recipe by adding | 886 | To better understand this, consider an example that customizes a recipe by adding |
887 | a BSP-specific configuration file named <filename>interfaces</filename> to the | 887 | a BSP-specific configuration file named <filename>interfaces</filename> to the |
888 | <filename>netbase_5.0.bb</filename> recipe for machine "xyz". | 888 | <filename>netbase_5.0.bb</filename> recipe for machine "xyz". |
889 | Do the following: | 889 | Do the following: |
890 | <orderedlist> | 890 | <orderedlist> |
891 | <listitem><para>Edit the <filename>netbase_4.47.bbappend</filename> file so that it | 891 | <listitem><para>Edit the <filename>netbase_4.47.bbappend</filename> file so that it |
892 | contains the following: | 892 | contains the following: |
893 | <literallayout class='monospaced'> | 893 | <literallayout class='monospaced'> |
894 | FILESEXTRAPATHS_prepend := "${THISDIR}/files:" | 894 | FILESEXTRAPATHS_prepend := "${THISDIR}/files:" |
895 | PRINC := "${@int(PRINC) + 2}" | 895 | PRINC := "${@int(PRINC) + 2}" |
896 | </literallayout></para></listitem> | 896 | </literallayout></para></listitem> |
897 | <listitem><para>Create and place the new <filename>interfaces</filename> | 897 | <listitem><para>Create and place the new <filename>interfaces</filename> |
898 | configuration file in the BSP's layer here: | 898 | configuration file in the BSP's layer here: |
899 | <literallayout class='monospaced'> | 899 | <literallayout class='monospaced'> |
900 | meta-xyz/recipes-core/netbase/files/xyz/interfaces | 900 | meta-xyz/recipes-core/netbase/files/xyz/interfaces |
@@ -909,24 +909,24 @@ | |||
909 | <para> | 909 | <para> |
910 | In some cases, a BSP contains separately licensed Intellectual Property (IP) | 910 | In some cases, a BSP contains separately licensed Intellectual Property (IP) |
911 | for a component or components. | 911 | for a component or components. |
912 | For these cases, you are required to accept the terms of a commercial or other | 912 | For these cases, you are required to accept the terms of a commercial or other |
913 | type of license that requires some kind of explicit End User License Agreement (EULA). | 913 | type of license that requires some kind of explicit End User License Agreement (EULA). |
914 | Once the license is accepted, the OpenEmbedded build system can then build and | 914 | Once the license is accepted, the OpenEmbedded build system can then build and |
915 | include the corresponding component in the final BSP image. | 915 | include the corresponding component in the final BSP image. |
916 | If the BSP is available as a pre-built image, you can download the image after | 916 | If the BSP is available as a pre-built image, you can download the image after |
917 | agreeing to the license or EULA. | 917 | agreeing to the license or EULA. |
918 | </para> | 918 | </para> |
919 | 919 | ||
920 | <para> | 920 | <para> |
921 | You could find that some separately licensed components that are essential | 921 | You could find that some separately licensed components that are essential |
922 | for normal operation of the system might not have an unencumbered (or free) | 922 | for normal operation of the system might not have an unencumbered (or free) |
923 | substitute. | 923 | substitute. |
924 | Without these essential components, the system would be non-functional. | 924 | Without these essential components, the system would be non-functional. |
925 | Then again, you might find that other licensed components that are simply | 925 | Then again, you might find that other licensed components that are simply |
926 | 'good-to-have' or purely elective do have an unencumbered, free replacement | 926 | 'good-to-have' or purely elective do have an unencumbered, free replacement |
927 | component that you can use rather than agreeing to the separately licensed component. | 927 | component that you can use rather than agreeing to the separately licensed component. |
928 | Even for components essential to the system, you might find an unencumbered component | 928 | Even for components essential to the system, you might find an unencumbered component |
929 | that is not identical but will work as a less-capable version of the | 929 | that is not identical but will work as a less-capable version of the |
930 | licensed version in the BSP recipe. | 930 | licensed version in the BSP recipe. |
931 | </para> | 931 | </para> |
932 | 932 | ||
@@ -935,14 +935,14 @@ | |||
935 | maintain the system's functionality, the Yocto Project website's | 935 | maintain the system's functionality, the Yocto Project website's |
936 | <ulink url='&YOCTO_HOME_URL;/download/all?keys=&download_type=1&download_version='>BSP | 936 | <ulink url='&YOCTO_HOME_URL;/download/all?keys=&download_type=1&download_version='>BSP |
937 | Download Page</ulink> makes available de-featured BSPs | 937 | Download Page</ulink> makes available de-featured BSPs |
938 | that are completely free of any IP encumbrances. | 938 | that are completely free of any IP encumbrances. |
939 | For these cases, you can use the substitution directly and | 939 | For these cases, you can use the substitution directly and |
940 | without any further licensing requirements. | 940 | without any further licensing requirements. |
941 | If present, these fully de-featured BSPs are named appropriately | 941 | If present, these fully de-featured BSPs are named appropriately |
942 | different as compared to the names of the respective | 942 | different as compared to the names of the respective |
943 | encumbered BSPs. | 943 | encumbered BSPs. |
944 | If available, these substitutions are your | 944 | If available, these substitutions are your |
945 | simplest and most preferred options. | 945 | simplest and most preferred options. |
946 | Use of these substitutions of course assumes the resulting functionality meets | 946 | Use of these substitutions of course assumes the resulting functionality meets |
947 | system requirements. | 947 | system requirements. |
948 | </para> | 948 | </para> |
@@ -953,23 +953,23 @@ | |||
953 | version. | 953 | version. |
954 | </para> | 954 | </para> |
955 | 955 | ||
956 | <para> | 956 | <para> |
957 | A couple different methods exist within the OpenEmbedded build system to | 957 | A couple different methods exist within the OpenEmbedded build system to |
958 | satisfy the licensing requirements for an encumbered BSP. | 958 | satisfy the licensing requirements for an encumbered BSP. |
959 | The following list describes them in order of preference: | 959 | The following list describes them in order of preference: |
960 | <orderedlist> | 960 | <orderedlist> |
961 | <listitem><para><emphasis>Use the <filename>LICENSE_FLAGS</filename> variable | 961 | <listitem><para><emphasis>Use the <filename>LICENSE_FLAGS</filename> variable |
962 | to define the recipes that have commercial or other types of | 962 | to define the recipes that have commercial or other types of |
963 | specially-licensed packages:</emphasis> | 963 | specially-licensed packages:</emphasis> |
964 | For each of those recipes, you can | 964 | For each of those recipes, you can |
965 | specify a matching license string in a | 965 | specify a matching license string in a |
966 | <filename>local.conf</filename> variable named | 966 | <filename>local.conf</filename> variable named |
967 | <filename>LICENSE_FLAGS_WHITELIST</filename>. | 967 | <filename>LICENSE_FLAGS_WHITELIST</filename>. |
968 | Specifying the matching license string signifies that you agree to the license. | 968 | Specifying the matching license string signifies that you agree to the license. |
969 | Thus, the build system can build the corresponding recipe and include | 969 | Thus, the build system can build the corresponding recipe and include |
970 | the component in the image. | 970 | the component in the image. |
971 | See the | 971 | See the |
972 | "<ulink url='&YOCTO_DOCS_REF_URL;#enabling-commercially-licensed-recipes'>Enabling | 972 | "<ulink url='&YOCTO_DOCS_REF_URL;#enabling-commercially-licensed-recipes'>Enabling |
973 | Commercially Licensed Recipes</ulink>" section in the Yocto Project Reference | 973 | Commercially Licensed Recipes</ulink>" section in the Yocto Project Reference |
974 | Manual for details on how to use these variables.</para> | 974 | Manual for details on how to use these variables.</para> |
975 | <para>If you build as you normally would, without | 975 | <para>If you build as you normally would, without |
@@ -977,15 +977,15 @@ | |||
977 | <filename>LICENSE_FLAGS_WHITELIST</filename>, the build stops and | 977 | <filename>LICENSE_FLAGS_WHITELIST</filename>, the build stops and |
978 | provides you with the list of recipes that you have | 978 | provides you with the list of recipes that you have |
979 | tried to include in the image that need entries in | 979 | tried to include in the image that need entries in |
980 | the <filename>LICENSE_FLAGS_WHITELIST</filename>. | 980 | the <filename>LICENSE_FLAGS_WHITELIST</filename>. |
981 | Once you enter the appropriate license flags into the whitelist, | 981 | Once you enter the appropriate license flags into the whitelist, |
982 | restart the build to continue where it left off. | 982 | restart the build to continue where it left off. |
983 | During the build, the prompt will not appear again | 983 | During the build, the prompt will not appear again |
984 | since you have satisfied the requirement.</para> | 984 | since you have satisfied the requirement.</para> |
985 | <para>Once the appropriate license flags are on the white list | 985 | <para>Once the appropriate license flags are on the white list |
986 | in the <filename>LICENSE_FLAGS_WHITELIST</filename> variable, you | 986 | in the <filename>LICENSE_FLAGS_WHITELIST</filename> variable, you |
987 | can build the encumbered image with no change at all | 987 | can build the encumbered image with no change at all |
988 | to the normal build process.</para></listitem> | 988 | to the normal build process.</para></listitem> |
989 | <listitem><para><emphasis>Get a pre-built version of the BSP:</emphasis> | 989 | <listitem><para><emphasis>Get a pre-built version of the BSP:</emphasis> |
990 | You can get this type of BSP by visiting the Yocto Project website's | 990 | You can get this type of BSP by visiting the Yocto Project website's |
991 | <ulink url='&YOCTO_HOME_URL;/download'>Download</ulink> | 991 | <ulink url='&YOCTO_HOME_URL;/download'>Download</ulink> |
@@ -993,11 +993,11 @@ | |||
993 | You can download BSP tarballs that contain proprietary components | 993 | You can download BSP tarballs that contain proprietary components |
994 | after agreeing to the licensing | 994 | after agreeing to the licensing |
995 | requirements of each of the individually encumbered | 995 | requirements of each of the individually encumbered |
996 | packages as part of the download process. | 996 | packages as part of the download process. |
997 | Obtaining the BSP this way allows you to access an encumbered | 997 | Obtaining the BSP this way allows you to access an encumbered |
998 | image immediately after agreeing to the | 998 | image immediately after agreeing to the |
999 | click-through license agreements presented by the | 999 | click-through license agreements presented by the |
1000 | website. | 1000 | website. |
1001 | Note that if you want to build the image | 1001 | Note that if you want to build the image |
1002 | yourself using the recipes contained within the BSP | 1002 | yourself using the recipes contained within the BSP |
1003 | tarball, you will still need to create an | 1003 | tarball, you will still need to create an |
@@ -1010,11 +1010,11 @@ | |||
1010 | Pre-compiled images are bundled with | 1010 | Pre-compiled images are bundled with |
1011 | a time-limited kernel that runs for a | 1011 | a time-limited kernel that runs for a |
1012 | predetermined amount of time (10 days) before it forces | 1012 | predetermined amount of time (10 days) before it forces |
1013 | the system to reboot. | 1013 | the system to reboot. |
1014 | This limitation is meant to discourage direct redistribution | 1014 | This limitation is meant to discourage direct redistribution |
1015 | of the image. | 1015 | of the image. |
1016 | You must eventually rebuild the image if you want to remove this restriction. | 1016 | You must eventually rebuild the image if you want to remove this restriction. |
1017 | </note> | 1017 | </note> |
1018 | </section> | 1018 | </section> |
1019 | 1019 | ||
1020 | <section id='using-the-yocto-projects-bsp-tools'> | 1020 | <section id='using-the-yocto-projects-bsp-tools'> |
@@ -1022,16 +1022,16 @@ | |||
1022 | 1022 | ||
1023 | <para> | 1023 | <para> |
1024 | The Yocto Project includes a couple of tools that enable | 1024 | The Yocto Project includes a couple of tools that enable |
1025 | you to create a <link linkend='bsp-layers'>BSP layer</link> | 1025 | you to create a <link linkend='bsp-layers'>BSP layer</link> |
1026 | from scratch and do basic configuration and maintenance | 1026 | from scratch and do basic configuration and maintenance |
1027 | of the kernel without ever looking at a metadata file. | 1027 | of the kernel without ever looking at a metadata file. |
1028 | These tools are <filename>yocto-bsp</filename> and <filename>yocto-kernel</filename>, | 1028 | These tools are <filename>yocto-bsp</filename> and <filename>yocto-kernel</filename>, |
1029 | respectively. | 1029 | respectively. |
1030 | </para> | 1030 | </para> |
1031 | 1031 | ||
1032 | <para> | 1032 | <para> |
1033 | The following sections describe the common location and help features as well | 1033 | The following sections describe the common location and help features as well |
1034 | as provide details for the | 1034 | as provide details for the |
1035 | <filename>yocto-bsp</filename> and <filename>yocto-kernel</filename> tools. | 1035 | <filename>yocto-bsp</filename> and <filename>yocto-kernel</filename> tools. |
1036 | </para> | 1036 | </para> |
1037 | 1037 | ||
@@ -1039,7 +1039,7 @@ | |||
1039 | <title>Common Features</title> | 1039 | <title>Common Features</title> |
1040 | 1040 | ||
1041 | <para> | 1041 | <para> |
1042 | Designed to have a command interface somewhat like | 1042 | Designed to have a command interface somewhat like |
1043 | <ulink url='&YOCTO_DOCS_DEV_URL;#git'>Git</ulink>, each | 1043 | <ulink url='&YOCTO_DOCS_DEV_URL;#git'>Git</ulink>, each |
1044 | tool is structured as a set of sub-commands under a | 1044 | tool is structured as a set of sub-commands under a |
1045 | top-level command. | 1045 | top-level command. |
@@ -1050,9 +1050,9 @@ | |||
1050 | </para> | 1050 | </para> |
1051 | 1051 | ||
1052 | <para> | 1052 | <para> |
1053 | Both tools reside in the <filename>scripts/</filename> subdirectory | 1053 | Both tools reside in the <filename>scripts/</filename> subdirectory |
1054 | of the <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. | 1054 | of the <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. |
1055 | Consequently, to use the scripts, you must <filename>source</filename> the | 1055 | Consequently, to use the scripts, you must <filename>source</filename> the |
1056 | environment just as you would when invoking a build: | 1056 | environment just as you would when invoking a build: |
1057 | <literallayout class='monospaced'> | 1057 | <literallayout class='monospaced'> |
1058 | $ source oe-init-build-env [build_dir] | 1058 | $ source oe-init-build-env [build_dir] |
@@ -1067,7 +1067,7 @@ | |||
1067 | switch: | 1067 | switch: |
1068 | <literallayout class='monospaced'> | 1068 | <literallayout class='monospaced'> |
1069 | $ yocto-bsp help | 1069 | $ yocto-bsp help |
1070 | Usage: | 1070 | Usage: |
1071 | 1071 | ||
1072 | Create a customized Yocto BSP layer. | 1072 | Create a customized Yocto BSP layer. |
1073 | 1073 | ||
@@ -1088,12 +1088,12 @@ | |||
1088 | </para> | 1088 | </para> |
1089 | 1089 | ||
1090 | <para> | 1090 | <para> |
1091 | Similarly, entering just the name of a sub-command shows the detailed usage | 1091 | Similarly, entering just the name of a sub-command shows the detailed usage |
1092 | for that sub-command: | 1092 | for that sub-command: |
1093 | <literallayout class='monospaced'> | 1093 | <literallayout class='monospaced'> |
1094 | $ yocto-bsp create | 1094 | $ yocto-bsp create |
1095 | 1095 | ||
1096 | Usage: | 1096 | Usage: |
1097 | 1097 | ||
1098 | Create a new Yocto BSP | 1098 | Create a new Yocto BSP |
1099 | 1099 | ||
@@ -1111,7 +1111,7 @@ | |||
1111 | </para> | 1111 | </para> |
1112 | 1112 | ||
1113 | <para> | 1113 | <para> |
1114 | For any sub-command, you can also use the word 'help' just before the | 1114 | For any sub-command, you can also use the word 'help' just before the |
1115 | sub-command to get more extensive documentation: | 1115 | sub-command to get more extensive documentation: |
1116 | <literallayout class='monospaced'> | 1116 | <literallayout class='monospaced'> |
1117 | $ yocto-bsp help create | 1117 | $ yocto-bsp help create |
@@ -1141,11 +1141,11 @@ | |||
1141 | </para> | 1141 | </para> |
1142 | 1142 | ||
1143 | <para> | 1143 | <para> |
1144 | Now that you know where these two commands reside and how to access information | 1144 | Now that you know where these two commands reside and how to access information |
1145 | on them, you should find it relatively straightforward to discover the commands | 1145 | on them, you should find it relatively straightforward to discover the commands |
1146 | necessary to create a BSP and perform basic kernel maintenance on that BSP using | 1146 | necessary to create a BSP and perform basic kernel maintenance on that BSP using |
1147 | the tools. | 1147 | the tools. |
1148 | The next sections provide a concrete starting point to expand on a few points that | 1148 | The next sections provide a concrete starting point to expand on a few points that |
1149 | might not be immediately obvious or that could use further explanation. | 1149 | might not be immediately obvious or that could use further explanation. |
1150 | </para> | 1150 | </para> |
1151 | </section> | 1151 | </section> |
@@ -1155,10 +1155,10 @@ | |||
1155 | <title>Creating a new BSP Layer Using the yocto-bsp Script</title> | 1155 | <title>Creating a new BSP Layer Using the yocto-bsp Script</title> |
1156 | 1156 | ||
1157 | <para> | 1157 | <para> |
1158 | The <filename>yocto-bsp</filename> script creates a new | 1158 | The <filename>yocto-bsp</filename> script creates a new |
1159 | <link linkend='bsp-layers'>BSP layer</link> for any architecture supported | 1159 | <link linkend='bsp-layers'>BSP layer</link> for any architecture supported |
1160 | by the Yocto Project, as well as QEMU versions of the same. | 1160 | by the Yocto Project, as well as QEMU versions of the same. |
1161 | The default mode of the script's operation is to prompt you for information needed | 1161 | The default mode of the script's operation is to prompt you for information needed |
1162 | to generate the BSP layer. | 1162 | to generate the BSP layer. |
1163 | For the current set of BSPs, the script prompts you for various important | 1163 | For the current set of BSPs, the script prompts you for various important |
1164 | parameters such as: | 1164 | parameters such as: |
@@ -1174,11 +1174,11 @@ | |||
1174 | </para> | 1174 | </para> |
1175 | 1175 | ||
1176 | <para> | 1176 | <para> |
1177 | You use the <filename>yocto-bsp create</filename> sub-command to create | 1177 | You use the <filename>yocto-bsp create</filename> sub-command to create |
1178 | a new BSP layer. | 1178 | a new BSP layer. |
1179 | This command requires you to specify a particular kernel architecture | 1179 | This command requires you to specify a particular kernel architecture |
1180 | (<filename>karch</filename>) on which to base the BSP. | 1180 | (<filename>karch</filename>) on which to base the BSP. |
1181 | Assuming you have sourced the environment, you can use the | 1181 | Assuming you have sourced the environment, you can use the |
1182 | <filename>yocto-bsp list karch</filename> sub-command to list the | 1182 | <filename>yocto-bsp list karch</filename> sub-command to list the |
1183 | architectures available for BSP creation as follows: | 1183 | architectures available for BSP creation as follows: |
1184 | <literallayout class='monospaced'> | 1184 | <literallayout class='monospaced'> |
@@ -1194,7 +1194,7 @@ | |||
1194 | </para> | 1194 | </para> |
1195 | 1195 | ||
1196 | <para> | 1196 | <para> |
1197 | The remainder of this section presents an example that uses | 1197 | The remainder of this section presents an example that uses |
1198 | <filename>myarm</filename> as the machine name and <filename>qemu</filename> | 1198 | <filename>myarm</filename> as the machine name and <filename>qemu</filename> |
1199 | as the machine architecture. | 1199 | as the machine architecture. |
1200 | Of the available architectures, <filename>qemu</filename> is the only architecture | 1200 | Of the available architectures, <filename>qemu</filename> is the only architecture |
@@ -1206,14 +1206,14 @@ | |||
1206 | </para> | 1206 | </para> |
1207 | 1207 | ||
1208 | <para> | 1208 | <para> |
1209 | As the <filename>yocto-bsp create</filename> command runs, default values for | 1209 | As the <filename>yocto-bsp create</filename> command runs, default values for |
1210 | the prompts appear in brackets. | 1210 | the prompts appear in brackets. |
1211 | Pressing enter without supplying anything on the command line or pressing enter | 1211 | Pressing enter without supplying anything on the command line or pressing enter |
1212 | and providing an invalid response causes the script to accept the default value. | 1212 | and providing an invalid response causes the script to accept the default value. |
1213 | Once the script completes, the new <filename>meta-myarm</filename> BSP layer | 1213 | Once the script completes, the new <filename>meta-myarm</filename> BSP layer |
1214 | is created in the current working directory. | 1214 | is created in the current working directory. |
1215 | This example assumes you have source the &OE_INIT_FILE; and are currently | 1215 | This example assumes you have source the &OE_INIT_FILE; and are currently |
1216 | in the top-level folder of the | 1216 | in the top-level folder of the |
1217 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. | 1217 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. |
1218 | </para> | 1218 | </para> |
1219 | 1219 | ||
@@ -1254,47 +1254,47 @@ | |||
1254 | </literallayout> | 1254 | </literallayout> |
1255 | Let's take a closer look at the example now: | 1255 | Let's take a closer look at the example now: |
1256 | <orderedlist> | 1256 | <orderedlist> |
1257 | <listitem><para>For the <filename>qemu</filename> architecture, | 1257 | <listitem><para>For the <filename>qemu</filename> architecture, |
1258 | the script first prompts you for which emulated architecture to use. | 1258 | the script first prompts you for which emulated architecture to use. |
1259 | In the example, we use the <filename>arm</filename> architecture. | 1259 | In the example, we use the <filename>arm</filename> architecture. |
1260 | </para></listitem> | 1260 | </para></listitem> |
1261 | <listitem><para>The script then prompts you for the kernel. | 1261 | <listitem><para>The script then prompts you for the kernel. |
1262 | The default 3.4 kernel is acceptable. | 1262 | The default 3.4 kernel is acceptable. |
1263 | So, the example accepts the default. | 1263 | So, the example accepts the default. |
1264 | If you enter 'n', the script prompts you to further enter the kernel | 1264 | If you enter 'n', the script prompts you to further enter the kernel |
1265 | you do want to use (e.g. 3.0, 3.2_preempt-rt, and so forth.).</para></listitem> | 1265 | you do want to use (e.g. 3.0, 3.2_preempt-rt, and so forth.).</para></listitem> |
1266 | <listitem><para>Next, the script asks whether you would like to have a new | 1266 | <listitem><para>Next, the script asks whether you would like to have a new |
1267 | branch created especially for your BSP in the local | 1267 | branch created especially for your BSP in the local |
1268 | <ulink url='&YOCTO_DOCS_DEV_URL;#local-kernel-files'>Linux Yocto Kernel</ulink> | 1268 | <ulink url='&YOCTO_DOCS_DEV_URL;#local-kernel-files'>Linux Yocto Kernel</ulink> |
1269 | Git repository . | 1269 | Git repository . |
1270 | If not, then the script re-uses an existing branch.</para> | 1270 | If not, then the script re-uses an existing branch.</para> |
1271 | <para>In this example, the default (or 'yes') is accepted. | 1271 | <para>In this example, the default (or 'yes') is accepted. |
1272 | Thus, a new branch is created for the BSP rather than using a common, shared | 1272 | Thus, a new branch is created for the BSP rather than using a common, shared |
1273 | branch. | 1273 | branch. |
1274 | The new branch is the branch committed to for any patches you might later add. | 1274 | The new branch is the branch committed to for any patches you might later add. |
1275 | The reason a new branch is the default is that typically | 1275 | The reason a new branch is the default is that typically |
1276 | new BSPs do require BSP-specific patches. | 1276 | new BSPs do require BSP-specific patches. |
1277 | The tool thus assumes that most of time a new branch is required. | 1277 | The tool thus assumes that most of time a new branch is required. |
1278 | </para></listitem> | 1278 | </para></listitem> |
1279 | <listitem><para>Regardless of which choice you make in the previous step, | 1279 | <listitem><para>Regardless of which choice you make in the previous step, |
1280 | you are now given the opportunity to select a particular machine branch on | 1280 | you are now given the opportunity to select a particular machine branch on |
1281 | which to base your new BSP-specific machine branch | 1281 | which to base your new BSP-specific machine branch |
1282 | (or to re-use if you had elected to not create a new branch). | 1282 | (or to re-use if you had elected to not create a new branch). |
1283 | Because this example is generating an <filename>arm</filename> BSP, the example | 1283 | Because this example is generating an <filename>arm</filename> BSP, the example |
1284 | uses <filename>#1</filename> at the prompt, which selects the arm-versatile branch. | 1284 | uses <filename>#1</filename> at the prompt, which selects the arm-versatile branch. |
1285 | </para></listitem> | 1285 | </para></listitem> |
1286 | <listitem><para>The remainder of the prompts are routine. | 1286 | <listitem><para>The remainder of the prompts are routine. |
1287 | Defaults are accepted for each.</para></listitem> | 1287 | Defaults are accepted for each.</para></listitem> |
1288 | <listitem><para>By default, the script creates the new BSP Layer in the | 1288 | <listitem><para>By default, the script creates the new BSP Layer in the |
1289 | current working directory of the | 1289 | current working directory of the |
1290 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>, | 1290 | <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>, |
1291 | which is <filename>poky</filename> in this case. | 1291 | which is <filename>poky</filename> in this case. |
1292 | </para></listitem> | 1292 | </para></listitem> |
1293 | </orderedlist> | 1293 | </orderedlist> |
1294 | </para> | 1294 | </para> |
1295 | 1295 | ||
1296 | <para> | 1296 | <para> |
1297 | Once the BSP Layer is created, you must add it to your | 1297 | Once the BSP Layer is created, you must add it to your |
1298 | <filename>bblayers.conf</filename> file. | 1298 | <filename>bblayers.conf</filename> file. |
1299 | Here is an example: | 1299 | Here is an example: |
1300 | <literallayout class='monospaced'> | 1300 | <literallayout class='monospaced'> |
@@ -1309,11 +1309,11 @@ | |||
1309 | /usr/local/src/yocto/meta \ | 1309 | /usr/local/src/yocto/meta \ |
1310 | /usr/local/src/yocto/meta-yocto \ | 1310 | /usr/local/src/yocto/meta-yocto \ |
1311 | " | 1311 | " |
1312 | </literallayout> | 1312 | </literallayout> |
1313 | Adding the layer to this file allows the build system to build the BSP and | 1313 | Adding the layer to this file allows the build system to build the BSP and |
1314 | the <filename>yocto-kernel</filename> tool to be able to find the layer and | 1314 | the <filename>yocto-kernel</filename> tool to be able to find the layer and |
1315 | other metadata it needs on which to operate. | 1315 | other metadata it needs on which to operate. |
1316 | </para> | 1316 | </para> |
1317 | </section> | 1317 | </section> |
1318 | 1318 | ||
1319 | <section id='managing-kernel-patches-and-config-items-with-yocto-kernel'> | 1319 | <section id='managing-kernel-patches-and-config-items-with-yocto-kernel'> |
@@ -1331,14 +1331,14 @@ | |||
1331 | 1331 | ||
1332 | <para> | 1332 | <para> |
1333 | The <filename>yocto-kernel</filename> script allows you to add, remove, and list patches | 1333 | The <filename>yocto-kernel</filename> script allows you to add, remove, and list patches |
1334 | and kernel config settings to a BSP's kernel | 1334 | and kernel config settings to a BSP's kernel |
1335 | <filename>.bbappend</filename> file. | 1335 | <filename>.bbappend</filename> file. |
1336 | All you need to do is use the appropriate sub-command. | 1336 | All you need to do is use the appropriate sub-command. |
1337 | Recall that the easiest way to see exactly what sub-commands are available | 1337 | Recall that the easiest way to see exactly what sub-commands are available |
1338 | is to use the <filename>yocto-kernel</filename> built-in help as follows: | 1338 | is to use the <filename>yocto-kernel</filename> built-in help as follows: |
1339 | <literallayout class='monospaced'> | 1339 | <literallayout class='monospaced'> |
1340 | $ yocto-kernel | 1340 | $ yocto-kernel |
1341 | Usage: | 1341 | Usage: |
1342 | 1342 | ||
1343 | Modify and list Yocto BSP kernel config items and patches. | 1343 | Modify and list Yocto BSP kernel config items and patches. |
1344 | 1344 | ||
@@ -1364,8 +1364,8 @@ | |||
1364 | </para> | 1364 | </para> |
1365 | 1365 | ||
1366 | <para> | 1366 | <para> |
1367 | The <filename>yocto-kernel patch add</filename> sub-command allows you to add a | 1367 | The <filename>yocto-kernel patch add</filename> sub-command allows you to add a |
1368 | patch to a BSP. | 1368 | patch to a BSP. |
1369 | The following example adds two patches to the <filename>myarm</filename> BSP: | 1369 | The following example adds two patches to the <filename>myarm</filename> BSP: |
1370 | <literallayout class='monospaced'> | 1370 | <literallayout class='monospaced'> |
1371 | $ yocto-kernel patch add myarm ~/test.patch | 1371 | $ yocto-kernel patch add myarm ~/test.patch |
@@ -1381,7 +1381,7 @@ | |||
1381 | </para> | 1381 | </para> |
1382 | 1382 | ||
1383 | <para> | 1383 | <para> |
1384 | You can verify patches have been added by using the | 1384 | You can verify patches have been added by using the |
1385 | <filename>yocto-kernel patch list</filename> sub-command. | 1385 | <filename>yocto-kernel patch list</filename> sub-command. |
1386 | Here is an example: | 1386 | Here is an example: |
1387 | <literallayout class='monospaced'> | 1387 | <literallayout class='monospaced'> |
@@ -1420,7 +1420,7 @@ | |||
1420 | <para> | 1420 | <para> |
1421 | In a completely similar way, you can use the <filename>yocto-kernel config add</filename> | 1421 | In a completely similar way, you can use the <filename>yocto-kernel config add</filename> |
1422 | sub-command to add one or more kernel config item settings to a BSP. | 1422 | sub-command to add one or more kernel config item settings to a BSP. |
1423 | The following commands add a couple of config items to the | 1423 | The following commands add a couple of config items to the |
1424 | <filename>myarm</filename> BSP: | 1424 | <filename>myarm</filename> BSP: |
1425 | <literallayout class='monospaced'> | 1425 | <literallayout class='monospaced'> |
1426 | $ yocto-kernel config add myarm CONFIG_MISC_DEVICES=y | 1426 | $ yocto-kernel config add myarm CONFIG_MISC_DEVICES=y |
@@ -1448,7 +1448,7 @@ | |||
1448 | </para> | 1448 | </para> |
1449 | 1449 | ||
1450 | <para> | 1450 | <para> |
1451 | Finally, you can remove one or more config items using the | 1451 | Finally, you can remove one or more config items using the |
1452 | <filename>yocto-kernel config rm</filename> sub-command in a manner | 1452 | <filename>yocto-kernel config rm</filename> sub-command in a manner |
1453 | completely analogous to <filename>yocto-kernel patch rm</filename>. | 1453 | completely analogous to <filename>yocto-kernel patch rm</filename>. |
1454 | </para> | 1454 | </para> |