On more recent versions of setuptools the warning about not being able
to find the files specified in license_files has re-appeared. This is
because as best I can tell, it can't and won't look in $(srctree) but
rather only subdirectories of scripts/dtc/pylibfdt. Since we already
provide both SPDX tags and a license field with the SPDX contents, let
us just drop license_files as it's not mandatory.

Signed-off-by: Tom Rini <trini@konsulko.com>

The U-Boot environment was previously stored in the boot loader stream
using ldr, but it has been replaced by the default environment built
into the U-Boot executable or an environment on external storage

Fixes: ea3310e8aafa ("Blackfin: Remove")

Signed-off-by: Philip Molloy <philip.molloy@analog.com>
Reviewed-by: Greg Malysa <malysagreg@gmail.com>

This series from Ilias Apalodimas <ilias.apalodimas@linaro.org> largely
finishes the re-sync with the Linux Kernel v5.1 kbuild system.

Link: https://lore.kernel.org/r/20250627185723.342553-1-ilias.apalodimas@linaro.org

Our last sync with the kernel was 5.1. Even that was a partial one
as some patches from 4.x kernels were already missing making the
transition to a modern kbuild infeasible.

We are so out of sync now, that tracking the patches and backporting
them one by one makes little sense and it's going to take ages.

This is an attempt to sync up Makefile[.lib/.kbuild].
Unfortunately due to sheer amount of patches this is not easy to review,
but that's what we decided during a community call.

One of the biggest changes is get rid of partial linking entirely and
build .a archives isntead of .o.
We diaviate from the kernel on that. Instead of calling a custom script
to create the archive symbol table, we call ar with rcTP (isntead of
rcSTP) since we want a resulting archive that's sauble with the linker.

The only affected platforms are PPC ones. Unfortunately I don't have any
of them around to test, but the objdump of the resulting files --
arch/powerpc/lib/built-in.[oa] looks identical.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Since we are updating our kbuild system to 5.1, add the relevant
clang changes from upstream

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Since commit 51ec8db23280 ("pylibfdt: correct license information"), the
License classifiers are gone so I assume setuptools now extract the
license from the license argument to setuptools.setup() function.

It's always been incorrect as far as I could tell, so let's fix this
with the appropriate info from the SPDX License identifier at the top of
the file. It was missing GPL-2.0-or-later and we disambiguate by using
BSD-2-Clause instead of simply BSD.

Fixes: 6b08fb5cc44f ("fdt: Move to setuptools")
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>

This will allow arch(s) that use device tree blobs to pad the end of the
device tree so they can be modified by board files at run time. This will
help prevent errors such as FDT_ERR_NOSPACE from occurring.

Signed-off-by: Eric Schikschneit <eric.schikschneit@novatechautomation.com>
[trini: Change default order so that X86 && EFI_APP works correctly]

Backported from kernel
commit ba97df45581f ("kbuild: use assignment instead of define ... endef for filechk_* rules")

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Prepare v2025.07-rc4