ARM: layerscape: ppa: fix error propagation in ppa_init() ...

On fit_open_image, we returned PTR_ERR(fit) instead of the correct ret.
We also didn't call fit_close as we should. Fix this.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: specify sizeof(dma_addr_t) == sizeof(phys_addr_t) == 8 on 64BIT ...

sizeof(dma_addr_t) == 8 shouldn't introduce any functional change, because
we can't have DMA on sandbox. For now it suppresses benign warnings about
mismatched pointer and integer sizes when some headers are included.

sizeof(phys_addr_t) == 8 was already the case on systems with
__x86_64__. As CONFIG_64BIT now is set according to the bitness
of the compiler, we can migrate this fully to Kconfig.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

x86: Kconfig: specify sizeof(dma_addr_t) == 8 for 64BIT ...

This shouldn't introduce any functional change, because we don't yet do
any DMA on EFI. For now it suppresses warnings about mismatched pointer
and integer sizes when compile testing.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm/cpu: Replace license and copyright boilerplate by SPDX identfiers ...

This adapts all files that were identifed by licensecheck
(https://salsa.debian.org/build-common-team/licensecheck.git) as
licensed under the GPL.

While touching these files also do some minor comment reformatting to
get some uniform layout.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm/boards: Replace license boilerplate by SPDX identfiers ...

This adapts all files that were identifed by licensecheck
(https://salsa.debian.org/build-common-team/licensecheck.git) as
licensed under the GPL.

The copyright situation isn't trivially clear for these files, so I didn't
replace the copyright statement here with machine-parseable tags.

While touching these files also do some minor comment reformatting to
get some uniform layout.

Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: make use of PTR_ERR_OR_ZERO ...

PTR_ERR_OR_ZERO is designed to replace boiler plate like:

	if (IS_ERR(x))
		return PTR_ERR(x);
	return 0;

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

kbuild: remove AS variable ...

The assembler files in the barebox are *.S instead of *.s, so they must
be preprocessed. Since 'as' of GNU binutils is not able to preprocess,
we always use $(CC) as an assembler driver.

Remove AS variable.

Linux also removed AS. See Linux commits:

 aa824e0c962b ("kbuild: remove AS variable")
 1ca0c2f61211 ("kbuild: remove unused AS assignment")

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/spdx'

Merge branch 'for-next/sandbox-compile-test'

Merge branch 'for-next/misc'

Merge branch 'for-next/kvx'

Merge branch 'for-next/kbuild'

Merge branch 'for-next/imx'

MIPS: correctly work with disabled CONFIG_MMU ...

There are some issues with CONFIG_MMU=n in MIPS configuration
(e.g. qemu-malta_defconfig):

  * "Cannot request SDRAM region for stack" error message on start;
  * empty kseg1_ram0 region in the iomem command output.

The patch fixes the problems by forcing KSEG1 memory region usage
for CONFIG_MMU=n MIPS configurations.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: os: add_image: fix memory leak ...

devname is strdup'd few lines later, so remove the earlier strdup.
The pointer isn't stored anywhere persistent in between.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: asm: implement <asm/atomic.h> ...

For easier code-sharing, the UBIFS code still uses the Kernel's
atomic accessors. Provide a sandbox <asm/atomic.h> header, so we
can compile-test UBI under sandbox.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: atomic.h: move generic implementation to asm-generic ...

For easier code-sharing, the UBIFS code still uses the Linux atomic
accessors.  Make porting it to sandbox easier, by providing these
functions for all platforms.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: select HAS_DMA ...

With the DMA stubs in place, we can indicate HAS_DMA in good conscience.
Do so.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: asm: implement stub DMA functions ...

For compile-testing drivers that use DMA operations under sandbox,
we want stub implementations of these. Provide them.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: implement stub physical virtual translation ...

For compile-testing drivers that use DMA operations under sandbox,
we want stub implementations of these. Provide them.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: <asm/io.h>: include bitio accessors ...

ARM <asm/io.h> defines the U-Boot style setbits/clrbits helpers.
Have sandbox follow suit to allow more drivers to be compile tested
there.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: asm/io.h: fall back to <asm-generic/bitio.h> out_be32 and friends ...

With the generic implementations in place in <asm-generic/bitio.h>, we can
drop the now-duplicate ARM definitions.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: support forcing 32-bit x86 ...

If gcc supports multiple architectures, barebox uses only the default
when compiling for ARCH=sandbox, this is e.g. the case with compilers
that generate both 32- and 64-bit x86 executables.

There can be good reasons to force 32-bit though, e.g. to reduce memory
consumption while fuzzing or to temporarily avoid 32-to-64-bit warnings,
while running the static analyzer. Add an option for this.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: asm: bitsperlong.h: detect bitness according to 64BIT symbol ...

Now that we have an accurate CONFIG_64BIT describing sandbox bitness,
we don't need to assume everything except __x86_64__ as 32-bit.

This assumes that sizeof(long) == sizeof(void *), which is assumed
anyway throughout the code base.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: define CONFIG_64BIT as appropriate ...

All 64-bit architectures are supposed to define CONFIG_64BIT to support
the relevant 64-bit MMIO accessors. The sandbox architecture is a bit
of a special case, because barebox uses the toolchain default and
doesn't force a bitness. Add 64BIT as promptless symbol, which reflects
the pointer size of the target platform.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX: enable Master Identifier Unlock ...

By default the HAB locks the Master Identifier (MID) to preconfigured
values. This is not a problem if Linux is running in the secure world,
however when running a secure world operating system such as OP-TEE, the
MID configuration should be done by the secure world operating system.

This causes no regressions for systems using no secure world operating
systems, since no MID value indicates that all normal/secure world
entities can access the peripherals supporting the MID.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

powerpc: move ddr-8xxx/ to the relevant Makefile ...

Directory descending upward is ugly. Move it to the correct Makefile.

No functional change is intended because FSL_DDR{2,3} depend on
ARCH_MPC85XX.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Revert "ARM: socfpga: generate smaller images when multiple boards are selected" ...

This reverts commit a83c97f.

The dead code elimination with thin archive can cope with the same
symbol names. Revert the workaround.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

kbuild: switch over to thin archive ...

Starting v4.13, Linux always uses thin archive instead of relocatable
ELF to combine builtin objects.

The thin archive is basically a text file that only contains paths to
object files.

As Linux commit 98ced886dd79 mentioned, this has a lot of benefits:

 - save disk space for builds

 - speed-up building a little

 - fix some issues when liking a giant executable (for example,
   allyesconfig on ARM Linux)

 - work better with dead code elimination

The last one is important for barebox because pbl highly relies on the
dead code elimination (-f{function,data}-sections and --gc-sections)
dropping symbols that are unreachable from the linker's entry point.
The dead code elimination does not work if the same symbol names are
used in the pevious incremental link mechanism because the same name
symbols all go into the same section.

Commit a83c97f2a406 ("ARM: socfpga: generate smaller images when
multiple boards are selected") worked around it by giving a dedicate
section to each of the same name symbols. This workaround can go away.

built-in.o was renamed to built-in.a since it is now an archive.
built-in-pbl.o was renamed to built-in.pbl.a for consistency.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/boards: Replace license and copyright boilerplate by SPDX identfiers ...

This adapts all files that were identifed by licensecheck
(https://salsa.debian.org/build-common-team/licensecheck.git) as
licensed under the GPL.

The advantage is that these specifiers are machine-parseable which helps
license conformance, e.g. for packaging barebox in Debian.

While touching these files also do some minor comment reformatting to
get some uniform layout.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Roland Hieber <rhi@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>