Merge tag 'arc-updates-for-2018.07-rc1' of git://git.denx.de/u-boot-arc

Here we do a couple of minor fixes like:
- Move .ivt section to the very beginning of the image
by default which allows us

Merge tag 'arc-updates-for-2018.07-rc1' of git://git.denx.de/u-boot-arc

Here we do a couple of minor fixes like:
- Move .ivt section to the very beginning of the image
by default which allows us to use that image put right
at reset vector (usually 0x0)

- Improve relocation fix-up which became required once
we moved .ivt and understood a problem with existing implementation
where we relied on a particular placement of sections.
Now we don't care about placement because we just explicitly
check for .text and in case of ARCompact .ivt sections

- Re-implemnt do_reset() such that it calls reset_cpu() which
could implmented for a particular board

And hte most important part we introduce support for yet another
devboard from Synopsys - EMDK.

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ARC: Reset: Implement weak reset_cpu()

This will allow for board-specific implementation of reset.
Default version will just stop execution with help of BRK instruction.

Signed-off-by: Alexey Brodk

ARC: Reset: Implement weak reset_cpu()

This will allow for board-specific implementation of reset.
Default version will just stop execution with help of BRK instruction.

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

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ARC: Reset: Use __builtin_arc_brk() instead of open-coded ASM

For quite some time we have a GCC's built-in which inserts BRK
instruction so let's use it instead of simple insertion of in-line
assemb

ARC: Reset: Use __builtin_arc_brk() instead of open-coded ASM

For quite some time we have a GCC's built-in which inserts BRK
instruction so let's use it instead of simple insertion of in-line
assembly.

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

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

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

arc: move common sources in library

"reset.c" and "cpu.c" have no architecture-specific code at all.
Others are applicable to either ARC CPU.

This change is a preparation to submission of ARCv2 arc

arc: move common sources in library

"reset.c" and "cpu.c" have no architecture-specific code at all.
Others are applicable to either ARC CPU.

This change is a preparation to submission of ARCv2 architecture port.

Even though ARCv1 and ARCv2 ISAs are not binary compatible most of
built-in modules still have the same programming model - AUX registers
are mapped in the same addresses and hold the same data (new featues
extend existing ones).

So only low-level assembly code (start-up, interrupt handlers) is left
as CPU(actually ISA)-specific. This significantyl simplifies maintenance
of multiple CPUs/ISAs.

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

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