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ref-manual: uboot-sign: Support firmware property in FIT config

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Add documentation for the UBOOT_FIT_CONF_FIRMWARE variable, which allows
users to specify an image to be assigned to the "firmware" property of
the FIT configuration node. This explicitly defines the primary image
to boot, instead of relying on the first entry in the "loadables" list.

(From yocto-docs rev: f72fc69e2d2a074d5eaf1cc36b30726de58e3ab5)

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Jamin Lin 2025-05-26 15:26:01 +08:00 committed by Richard Purdie
parent e2192ecec1
commit fe11965d14
2 changed files with 11 additions and 0 deletions
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2
documentation/ref-manual/classes.rst
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@ -3426,6 +3426,8 @@ The variables used by this class are:
- :term:`UBOOT_FIT_USER_SETTINGS`: adds a user-specific snippet to the U-Boot
Image Tree Source (ITS). Users can include their custom U-Boot Image Tree
Source (ITS) snippet in this variable.
- :term:`UBOOT_FIT_CONF_FIRMWARE`: adds one image to the ``firmware`` property
of the configuration node.
- :term:`UBOOT_FIT_CONF_USER_LOADABLES`: adds one or more user-defined images
to the ``loadables`` property of the configuration node.

9
documentation/ref-manual/variables.rst
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@ -10439,6 +10439,15 @@ system and gives an overview of their function and contents.
do_compile[depends] += "trusted-firmware-a:do_deploy"
:term:`UBOOT_FIT_CONF_FIRMWARE`
Adds one image to the ``firmware`` property of the configuration node of
the U-Boot Image Tree Source (ITS). Sets the ``firmware`` property to
select the image to boot first::
UBOOT_FIT_CONF_FIRMWARE = "fwa"
If not set, the first entry in "loadables" is used to boot instead.
:term:`UBOOT_FIT_CONF_USER_LOADABLES`
Adds one or more user-defined images to the ``loadables`` property of the
configuration node of the U-Boot Image Tree Source (ITS). This variable