docs: kbuild: add INSTALL_DTBS_PATH

Message ID 20231012105420.16779-2-ricardo@marliere.net
State New
Headers
Series docs: kbuild: add INSTALL_DTBS_PATH |

Commit Message

Ricardo B. Marliere Oct. 12, 2023, 10:54 a.m. UTC
  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>
---
 Documentation/kbuild/kbuild.rst    | 6 ++++++
 Documentation/kbuild/makefiles.rst | 7 +++++++
 2 files changed, 13 insertions(+)
  

Comments

Masahiro Yamada Oct. 14, 2023, 9:01 a.m. UTC | #1
On Thu, Oct 12, 2023 at 7:56 PM Ricardo B. Marliere
<ricardo@marliere.net> wrote:
>
> 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>
> ---

Applied to linux-kbuild.
Thanks.


>  Documentation/kbuild/kbuild.rst    | 6 ++++++
>  Documentation/kbuild/makefiles.rst | 7 +++++++
>  2 files changed, 13 insertions(+)
>
> diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst
> index bd906407e307..9c8d1d046ea5 100644
> --- a/Documentation/kbuild/kbuild.rst
> +++ b/Documentation/kbuild/kbuild.rst
> @@ -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,
> diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
> index e67eb261c9b0..d88d4f0f4f89 100644
> --- a/Documentation/kbuild/makefiles.rst
> +++ b/Documentation/kbuild/makefiles.rst
> @@ -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
>  =================
>
> --
> 2.42.0
>
  

Patch

diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst
index bd906407e307..9c8d1d046ea5 100644
--- a/Documentation/kbuild/kbuild.rst
+++ b/Documentation/kbuild/kbuild.rst
@@ -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,
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index e67eb261c9b0..d88d4f0f4f89 100644
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@@ -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
 =================