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documentation: Add multiconfig initramfs configuration:

Browse Source 
dev-manual/common-tasks.rst: Add section to create an initramfs
image from a separate multiconfig.

ref-manual/variables.rst: Add new variable definitions for
INITRAMFS_DEPLOY_DIR_IMAGE and INITRAMFS_MULTICONFIG

(From yocto-docs rev: 7853ab3df82c27ba309879a66a084b2e597dc1e5)

Signed-off-by: Alejandro Enedino Hernandez Samaniego <alhe@linux.microsoft.com>
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Alejandro Hernandez Samaniego
2022-02-16 13:17:31 -07:00
committed by Richard Purdie
parent b6c1329501
commit 552ff6e3d5
2 changed files with 59 additions and 0 deletions
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@@ -3554,6 +3554,13 @@ system and gives an overview of their function and contents.
even if the toolchain's binaries are strippable, there are other files
needed for the build that are not strippable.
:term:`INITRAMFS_DEPLOY_DIR_IMAGE`
Indicates the deploy directory used by ``do_bundle_initramfs`` where the
:term:`INITRAMFS_IMAGE` will be fetched from.
This variable is set by default to ``${DEPLOY_DIR_IMAGE}`` in the
:ref:`kernel <ref-classes-kernel>` class and it's only meant to be changed
when building an initramfs image from a separate multiconfig via :term:`INITRAMFS_MULTICONFIG`.
:term:`INITRAMFS_FSTYPES`
Defines the format for the output image of an initial RAM filesystem
(initramfs), which is used during boot. Supported formats are the
@@ -3673,6 +3680,16 @@ system and gives an overview of their function and contents.
See the :term:`MACHINE` variable for additional
information.
:term:`INITRAMFS_MULTICONFIG`
Defines the multiconfig to create a multiconfig dependency to be used by the :ref:`kernel <ref-classes-kernel>` class.
This allows the kernel to bundle an :term:`INITRAMFS_IMAGE` coming from
a separate multiconfig, this is meant to be used in addition to :term:`INITRAMFS_DEPLOY_DIR_IMAGE`.
For more information on how to bundle an initramfs image from a separate
multiconfig see the ":ref:`dev-manual/common-tasks:Bundling an Initramfs Image From a Separate Multiconfig`"
section in the Yocto Project Development Tasks Manual.
:term:`INITRAMFS_NAME`
The base name of the initial RAM filesystem image. This variable is
set in the ``meta/classes/kernel-artifact-names.bbclass`` file as