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: Use elf32-bigarc in case of -EB

As it is stated in LD manual [1] the second entry in OUTPUT_FORMAT
corresponds to "-EB" command-line option which for us is "elf32-bigarc".

[1] https://sourcewa

ARC: Use elf32-bigarc in case of -EB

As it is stated in LD manual [1] the second entry in OUTPUT_FORMAT
corresponds to "-EB" command-line option which for us is "elf32-bigarc".

[1] https://sourceware.org/binutils/docs/ld/Format-Commands.html#Format-Commands

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

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ARC: Move .ivt section to the very beginning of the image

This is useful for cases when U-Boot image is put in ROM and
reset vector points to 0 where the very beginnign of the image reside.

Signed-

ARC: Move .ivt section to the very beginning of the image

This is useful for cases when U-Boot image is put in ROM and
reset vector points to 0 where the very beginnign of the image reside.

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

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ARC: Make sure .ivt section is not purged by garbage collector

Fixes commit fac4790491f6 ("arc: Eliminate unused code and data with GCC's garbage collector"),
see [1].

Since in case of ARCv2 .ivt o

ARC: Make sure .ivt section is not purged by garbage collector

Fixes commit fac4790491f6 ("arc: Eliminate unused code and data with GCC's garbage collector"),
see [1].

Since in case of ARCv2 .ivt only contains addrresses of
interrupt/exception handlers linker doesn't understand that this section
actually make a lot of sense and decides to get rid of it if we use
"--gc-sections".

And KEEP does exactly this, see [2].

[1] http://git.denx.de/?p=u-boot.git;a=commit;h=fac4790491f69b29755d92db2cad508849573ff7
[2] https://sourceware.org/binutils/docs/ld/Input-Section-Keep.html#Input-Section-Keep

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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arc: No need in sections defined in sources with newer tools

Starting from arc-2016.03 GNU tools linker properly works with
symbols defined in linker script and so external declarations
are no longe

arc: No need in sections defined in sources with newer tools

Starting from arc-2016.03 GNU tools linker properly works with
symbols defined in linker script and so external declarations
are no longer required, dump them.

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

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

arc: make sure _start is in the beginning of .text section

This is important to have entry point in the beginning of .text section
because it allows simple loading and execution of U-Boot.

For exam

arc: make sure _start is in the beginning of .text section

This is important to have entry point in the beginning of .text section
because it allows simple loading and execution of U-Boot.

For example pre-bootloader loads U-Boot in memory starting from offset
0x81000000 and then just jumps to the same address.

Otherwise pre-bootloader would need to find-out where entry-point is. In
its turn if it deals with binary image of U-Boot there's no way for
pre-bootloader to get required value.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.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 linker script in arch/arc/cpu folder

This way we'll be able to use the same one script for either ARC CPU.

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