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ref-manual/variables.rst: document the INITRAMFS_MAXSIZE variable

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This variable specifies the maximum allowed size
of the initramfs image in Kbytes.
Fixes [YOCTO #15797]

CC: Yoann Congal <yoann.congal@smile.fr>
CC: Randy MacLeod <randy.macleod@windriver.com>
CC: Antonin Godard <antonin.godard@bootlin.com>
(From yocto-docs rev: 215796836549ae31ef8a9f4f2421316d20d4e3c3)

Signed-off-by: Christos Gavros <gavrosc@yahoo.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit 07bcdddaf71c76cdec186cf0ddd97a47eec54972)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
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Christos Gavros 2025-05-20 12:19:52 +02:00 committed by Steve Sakoman
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commit 9fe29f2369
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@ -4040,6 +4040,20 @@ system and gives an overview of their function and contents.
See the :term:`MACHINE` variable for additional
information.
:term:`INITRAMFS_MAXSIZE`
Defines the maximum allowed size of the :term:`Initramfs` image in Kbytes.
The build will fail if the :term:`Initramfs` image size exceeds this value.
The :term:`Initramfs` image size undergoes several calculation steps before
being compared to :term:`INITRAMFS_MAXSIZE`.
These steps are the same as those used for :term:`IMAGE_ROOTFS_MAXSIZE`
and are described in detail in that entry.
Thus, :term:`INITRAMFS_MAXSIZE` is compared with the result of the calculations
and is independent of the final image type (e.g. compressed).
A default value for :term:`INITRAMFS_MAXSIZE` is set in
:oe_git:`meta/conf/bitbake.conf </openembedded-core/tree/meta/conf/bitbake.conf>`.
:term:`INITRAMFS_MULTICONFIG`
Defines the multiconfig to create a multiconfig dependency to be used by the :ref:`kernel <ref-classes-kernel>` class.