docs: kbuild: add INSTALL_DTBS_PATH

The documentation for kbuild and makefiles is missing an explanation of
a variable important for some architectures.

Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Ricardo B. Marliere 2023-10-12 07:54:21 -03:00 committed by Masahiro Yamada
parent 7aef8f76d1
commit 1b6272894f
2 changed files with 13 additions and 0 deletions

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@ -243,6 +243,12 @@ The output directory is often set using "O=..." on the commandline.
The value can be overridden in which case the default value is ignored.
INSTALL_DTBS_PATH
-----------------
INSTALL_DTBS_PATH specifies where to install device tree blobs for
relocations required by build roots. This is not defined in the
makefile but the argument can be passed to make if needed.
KBUILD_ABS_SRCTREE
--------------------------------------------------
Kbuild uses a relative path to point to the tree when possible. For instance,

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@ -1623,6 +1623,13 @@ INSTALL_MOD_STRIP
INSTALL_MOD_STRIP value will be used as the option(s) to the strip
command.
INSTALL_DTBS_PATH
This variable specifies a prefix for relocations required by build
roots. It defines a place for installing the device tree blobs. Like
INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed
by the user if desired. Otherwise it defaults to the kernel install
path.
Makefile language
=================