SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

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

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Merge tag 'arc-for-2018.05-rc3' of git://git.denx.de/u-boot-arc

Subtle ARC fixes for v2018.05-RC3

These are only very subtle clean-ups here and there including:

* Correctly specified CPU freq for

Merge tag 'arc-for-2018.05-rc3' of git://git.denx.de/u-boot-arc

Subtle ARC fixes for v2018.05-RC3

These are only very subtle clean-ups here and there including:

* Correctly specified CPU freq for HSDK
(production boards are all shipped with 500MHZ as opposed
to early batch running at 1GHz)

* Addition of SNPS internal group email to MAINTAINERS file
* Switch to Hush shell on AXS10x boards

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ARC: Remove unused DECLARE_GLOBAL_DATA_PTR from init_helpers.c

"Global data" structure "gd" is not used in init_helpers.c
thus DECLARE_GLOBAL_DATA_PTR might be safely removed.

Signed-off-by: Eugeni

ARC: Remove unused DECLARE_GLOBAL_DATA_PTR from init_helpers.c

"Global data" structure "gd" is not used in init_helpers.c
thus DECLARE_GLOBAL_DATA_PTR might be safely removed.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

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Merge git://git.denx.de/u-boot-arc

Alexey:
1. Significantly rework cache-related functionality.
In particular that fixes coherency problems in some corner-cases,
allows us to enable and dis

Merge git://git.denx.de/u-boot-arc

Alexey:
1. Significantly rework cache-related functionality.
In particular that fixes coherency problems in some corner-cases,
allows us to enable and disable caches in run-time and still
have properly running system, finally support execution from
real flash (before we used to run from DDR from the very beginning).

2. Remove string routines implemented in assembly.
That allows us to build and run U-Boot on wide range of ARC cores
with different configurations. I.e. whatever tuning is used on GCC's
command-line we'll get code for desired flavor of ARC.
Otherwise for each and every corner-case we would need to add ifdefs
in assembly code to accommodate missing instructions etc.

3. Get use of GCC's garbage collector which helps to slim-down resulting image
quite a bit.

4. Also now we may disable U-Boot self-relocation for ARC if needed either
by platform or for debugging purposes.

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ARC: Implement a function to sync and cleanup caches

Implement specialized function to clenup caches (and therefore
sync instruction and data caches) which can be used for cleanup before linux
launc

ARC: Implement a function to sync and cleanup caches

Implement specialized function to clenup caches (and therefore
sync instruction and data caches) which can be used for cleanup before linux
launch or to sync caches during U-Boot self-relocation.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

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Merge branch 'master' of git://git.denx.de/u-boot

arc: significant cache rework

[1] Align cache management functions to those in Linux kernel. I.e.:
a) Use the same functions for all cache ops (D$ Inv/Flush)
b) Split cache ops in 3 sub-func

arc: significant cache rework

[1] Align cache management functions to those in Linux kernel. I.e.:
a) Use the same functions for all cache ops (D$ Inv/Flush)
b) Split cache ops in 3 sub-functions: "before", "lineloop" and
"after". That way we may re-use "before" and "after" functions for
region and full cache ops.

[2] Implement full-functional L2 (SLC) management. Before SLC was
simply disabled early on boot. It's also possible to enable or disable
L2 cache from config utility.

[3] Disable/enable corresponding caches early on boot. So if U-Boot is
configured to use caches they will be used at all times (this is useful
in partucular for speed-up of relocation).

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

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Merge branch 'u-boot/master'

Merge git://git.denx.de/u-boot-arc

arc: clean-up init procedure

Intention behind this work was elimination of as much assembly-written
code as it is possible.

In case of ARC we already have relocation fix-up implemented in C so why

arc: clean-up init procedure

Intention behind this work was elimination of as much assembly-written
code as it is possible.

In case of ARC we already have relocation fix-up implemented in C so why
don't we use C for U-Boot copying, .bss zeroing etc.

It turned out x86 uses pretty similar approach so we re-used parts of
code in "board_f.c" initially implemented for x86.

Now assembly usage during init is limited to stack- and frame-pointer
setup before and after relocation.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>

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