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ARM: add CONFIG_UNUSED_BOARD_FILES

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Based on the recent mailing list discussion, most board file support
has no remaining users and can be scheduled for removal early next
year.

If a board is still found to have users, it will remain for this round
but users are encouraged to migrate to devicetree based booting where
possible.

The timing is meant to ensure the next longterm supported kernel
still contains all the board files, giving another year of support
for potential users that did not speak up and would otherwise be
stuck on the v5.15.y longterm kernel from 2021.

Link: https://lore.kernel.org/all/CAK8P3a0Z9vGEQbVRBo84bSyPFM-LF+hs5w8ZA51g2Z+NsdtDQA@mail.gmail.com/
Link: https://docs.google.com/spreadsheets/d/1PL4dUUSieeXHzZhAn_Rnix32OTiCfN33sCQejpvI6ng/edit#gid=0
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2022-07-18 14:30:21 +02:00
parent 96a4ce30c2
commit acb926d618
1 changed files with 14 additions and 2 deletions
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16
arch/arm/Kconfig
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@ -1548,8 +1548,20 @@ config ATAGS
This is the traditional way of passing data to the kernel at boot
time. If you are solely relying on the flattened device tree (or
the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
to remove ATAGS support from your kernel binary. If unsure,
leave this to y.
to remove ATAGS support from your kernel binary.
config UNUSED_BOARD_FILES
bool "Board support for machines without known users"
depends on ATAGS
help
Most ATAGS based board files are completely unused and are
scheduled for removal in early 2023, and left out of kernels
by default now. If you are using a board file that is marked
as unused, turn on this option to build support into the kernel.
To keep support for your individual board from being removed,
send a reply to the email discussion at
https://lore.kernel.org/all/CAK8P3a0Z9vGEQbVRBo84bSyPFM-LF+hs5w8ZA51g2Z+NsdtDQA@mail.gmail.com/
config DEPRECATED_PARAM_STRUCT
bool "Provide old way to pass kernel parameters"