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dev-manual, ref-manual: Created new section on initramfs

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Fixes [YOCTO #7096]

We did not document how to create an initramfs image to be included
with a kernel build.  Various variables sort of inferred the
knowledge.  I created a new section in the "Common Tasks" section
of the dev-manual that describes how to create an initramfs image.

Also, I updated the kernel.bbclass reference section to point back
to the new "how-to" section.

Finally, I also created a bunch of cross-reference links from various
related variables back to the new "how-to" section.

(From yocto-docs rev: 289dfbd5d24241e42446a043104eecd6dca76f13)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
2016-12-29 10:26:15 -08:00
committed by Richard Purdie
parent d229fded3e
commit ecaab75be6
3 changed files with 124 additions and 20 deletions
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21
documentation/ref-manual/ref-classes.xml
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@@ -1873,11 +1873,22 @@
</para>
<para>
This means that each built kernel module is packaged separately and inter-module
dependencies are created by parsing the <filename>modinfo</filename> output.
If all modules are required, then installing the <filename>kernel-modules</filename>
package installs all packages with modules and various other kernel packages
such as <filename>kernel-vmlinux</filename>.
This means that each built kernel module is packaged separately and
inter-module dependencies are created by parsing the
<filename>modinfo</filename> output.
If all modules are required, then installing the
<filename>kernel-modules</filename> package installs all packages with
modules and various other kernel packages such as
<filename>kernel-vmlinux</filename>.
</para>
<para>
The <filename>kernel</filename> class contains logic that allows
you to embed an initial RAM filesystem (initramfs) image when
you build the kernel image.
For information on how to build an initramfs, see the
"<ulink url='&YOCTO_DOCS_DEV_URL;#building-an-initramfs-image'>Building an Initial RAM Filesystem (initramfs) Image</ulink>"
section in the Yocto Project Development Manual.
</para>
<para>