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Most of the traditional board files are no longer used by anyone and will be removed next year, while the DT based machine support remains. Adding a CONFIG_ATAGS dependency around all the board files means that they now actaully get disabled when ATAGS support is left out, and the individual boards that have no known users are marked as depending on CONFIG_UNUSED_BOARD_FILES, with the plan to remove them in early 2023 unless someone else shows interest. Laurence de Bruxelles intends to work on converting the Spitz/Akita/Borzoi family of Sharp Zaurus SL machines to DT, to make that easier those remain for the moment. In addition, the "Gumstix" machine is the one that is supported in qemu with 256MB of RAM, which makes it particularly nice for testing, I'm leaving it in hoping that someone can take care of converting it to DT as well. Finally, Marc Zyngier is still able to test the Zeus and Viper machines, so these could be saved as well if anyone wants to conver them to DT. This seems less likely, so I'm marking them as unused for the time being. For the defconfig files, both the pxa3xx_defconfig and pxa_defconfig now only enable the boards that are not marked as unused, while all the other ones explicitly enable CONFIG_UNUSED_BOARD_FILES to still allow building the kernels. Cc: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Daniel Mack <daniel@zonque.org> Cc: Laurence de Bruxelles <lfdebrux@gmail.com> Acked-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.