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authorRobert P. J. Day <rpjday@crashcourse.ca>2015-03-02 08:27:29 -0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2015-03-06 10:44:31 +0000
commitb49a5ccc5b625abb97dd13bc43c6101eb13954dd (patch)
tree5cd20172224cf5588660dd49f3f6f8c741cbf508 /documentation/kernel-dev/kernel-dev-common.xml
parentbef8558f0e1a73107743417d8b2b772744ed9c28 (diff)
downloadpoky-b49a5ccc5b625abb97dd13bc43c6101eb13954dd.tar.gz
kernel-dev: Clarify a couple minor things in kernel manual, ch 2.
Some small changes to clarify how to change the configuration. (From yocto-docs rev: fce7c97abb69f15142dbadf90a90965a49ec3e0e) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'documentation/kernel-dev/kernel-dev-common.xml')
-rw-r--r--documentation/kernel-dev/kernel-dev-common.xml28
1 files changed, 16 insertions, 12 deletions
diff --git a/documentation/kernel-dev/kernel-dev-common.xml b/documentation/kernel-dev/kernel-dev-common.xml
index 56fa17d7d8..87cf2b3864 100644
--- a/documentation/kernel-dev/kernel-dev-common.xml
+++ b/documentation/kernel-dev/kernel-dev-common.xml
@@ -156,23 +156,27 @@
156 <title>Changing the Configuration</title> 156 <title>Changing the Configuration</title>
157 157
158 <para> 158 <para>
159 You can make wholesale or incremental changes to the Linux 159 You can make wholesale or incremental changes to the final
160 kernel <filename>.config</filename> file by including a 160 <filename>.config</filename> file used for the eventual
161 <filename>defconfig</filename> and by specifying 161 Linux kernel configuration by including a
162 <filename>defconfig</filename> file and by specifying
162 configuration fragments in the 163 configuration fragments in the
163 <ulink url='&YOCTO_DOCS_REF_URL;#var-SRC_URI'><filename>SRC_URI</filename></ulink>. 164 <ulink url='&YOCTO_DOCS_REF_URL;#var-SRC_URI'><filename>SRC_URI</filename></ulink>
165 to be applied to that file.
164 </para> 166 </para>
165 167
166 <para> 168 <para>
167 If you have a final Linux kernel <filename>.config</filename> 169 If you have a complete, working Linux kernel
168 file you want to use, copy it to a directory named 170 <filename>.config</filename>
169 <filename>files</filename>, which must be in 171 file you want to use for the configuration, as before, copy
170 your layer's <filename>recipes-kernel/linux</filename> 172 that file to the appropriate <filename>${PN}</filename>
171 directory, and name the file "defconfig". 173 directory in your layer's
172 Then, add the following lines to your linux-yocto 174 <filename>recipes-kernel/linux</filename> directory,
175 and rename the copied file to "defconfig".
176 Then, add the following lines to the linux-yocto
173 <filename>.bbappend</filename> file in your layer: 177 <filename>.bbappend</filename> file in your layer:
174 <literallayout class='monospaced'> 178 <literallayout class='monospaced'>
175 FILESEXTRAPATHS_prepend := "${THISDIR}/files:" 179 FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
176 SRC_URI += "file://defconfig" 180 SRC_URI += "file://defconfig"
177 </literallayout> 181 </literallayout>
178 The <filename>SRC_URI</filename> tells the build system how to 182 The <filename>SRC_URI</filename> tells the build system how to
@@ -181,7 +185,7 @@
181 extends the 185 extends the
182 <ulink url='&YOCTO_DOCS_REF_URL;#var-FILESPATH'><filename>FILESPATH</filename></ulink> 186 <ulink url='&YOCTO_DOCS_REF_URL;#var-FILESPATH'><filename>FILESPATH</filename></ulink>
183 variable (search directories) to include the 187 variable (search directories) to include the
184 <filename>files</filename> directory you created for the 188 <filename>${PN}</filename> directory you created to hold the
185 configuration changes. 189 configuration changes.
186 </para> 190 </para>
187 191