Merge tag 'arc-fixes-for-2019.04-rc1' of git://git.denx.de/u-boot-arc

A couple of trivial fixes and improvements for ARC

Most notable are:
* Move of ENV_SIZE/ENV_OFFSET to Kconfig
* Fix with priv

Merge tag 'arc-fixes-for-2019.04-rc1' of git://git.denx.de/u-boot-arc

A couple of trivial fixes and improvements for ARC

Most notable are:
* Move of ENV_SIZE/ENV_OFFSET to Kconfig
* Fix with private structure allocation for arc_uart
* Definition of CONFIG_SYS_CACHELINE_SIZE useful for building drivers

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ARC: Fix iteration in arc_xx_version()

"i" gets incremented before we're entering loop body
and effectively we iterate from 1 to 8 instead of 0 to 7.

This way we:
a) Skip the first line of struct

ARC: Fix iteration in arc_xx_version()

"i" gets incremented before we're entering loop body
and effectively we iterate from 1 to 8 instead of 0 to 7.

This way we:
a) Skip the first line of struct hs_versions
b) Go over it and access memory beyond the structure

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

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Merge tag 'arc-updates-for-2019.01-rc1' of git://git.denx.de/u-boot-arc

We introduce much better automatic identification of ARC cores.

1. Try to match found HW features to known ARC core template

Merge tag 'arc-updates-for-2019.01-rc1' of git://git.denx.de/u-boot-arc

We introduce much better automatic identification of ARC cores.

1. Try to match found HW features to known ARC core templates
2. Print CPU frequency for all ARC boards
3. Add more board-specific info

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ARC: Improve identification of ARC cores

1. Try to guess a ARC core template that was used
i.e. not just name a core family but something more
menaingful like "ARC HS38", "ARC EM11D" etc.

ARC: Improve identification of ARC cores

1. Try to guess a ARC core template that was used
i.e. not just name a core family but something more
menaingful like "ARC HS38", "ARC EM11D" etc.

We do it checking availability of the key differentiation
features like:
- Caches (we actually only check for L1 I$ fpr simplicity)
- XY-memory
- DSP extensions etc.

2. Identify ARC subsystems

3. Print core clock frequency

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

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Merge tag 'arc-more-updates-for-2018.11-rc2-2' of git://git.denx.de/u-boot-arc

More fixes and improvements for ARC here:

Fixes (this time included for real):
* Take care of global uninitialized va

Merge tag 'arc-more-updates-for-2018.11-rc2-2' of git://git.denx.de/u-boot-arc

More fixes and improvements for ARC here:

Fixes (this time included for real):
* Take care of global uninitialized variables
They used to be put right after .bss section and were never
zeroed as they should be. Now merged with normal .bss

Improvements:
* Print more verbose CPU info for boards built on real silicon
* Add support for SD-card detection on all ARC boards
* Quite a few fixes for IoT DK
- Support reset by command
- Print of CPU freq on boot
- Link for eFlash etc

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ARC: make generic print_cpuinfo() weak

This allows board to override print_cpuinfo() because
they might know better which ARChitect template was used.
This way we may not only derive base architectu

ARC: make generic print_cpuinfo() weak

This allows board to override print_cpuinfo() because
they might know better which ARChitect template was used.
This way we may not only derive base architecture type and
version but more meaningful things like "ARC EM7D" instead of
simple "ARC EM", "ARC HS36" instead of "ARC HS".

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

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Merge tag 'arc-updates-for-2018.11-rc2' of git://git.denx.de/u-boot-arc

Here we do a couple of impovements for all ARC boards
as well as introduce yet another developemnt board.

1. Now for ARC boar

Merge tag 'arc-updates-for-2018.11-rc2' of git://git.denx.de/u-boot-arc

Here we do a couple of impovements for all ARC boards
as well as introduce yet another developemnt board.

1. Now for ARC boards we print CPU and board info
which is useful for users and helps with
analysis of logs "post-mortem".

2. Synopsys IoT development kit support is added
This one might bw a bit too late as we're past RC1
but:
1) This doesn't affect any other arches etc
as we change purely ARC code.
2) I've got a chance to talk about U-Boot on
IoT platforms during ELCE (my proposal was on
a wait list and only this week I've got
an update and invitation to talk) so it would
be good to have this board as a primer in upstream
code-base by the time of ELCE 2018.
3) For complete support of IoT devkit I'm yet to
significantly rework regmap subsystem in U-Boot
but that's a different topic and hopefully it will
be done sometime soon... though not this release
cycle for sure.

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ARC: Implement print_cpuinfo()

Once we enable DISPLAY_CPUINFO for ARC we'll see
ARC core family and version printed on boot.

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

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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board_f: Rename initdram() to dram_init()

This allows us to use the same DRAM init function on all archs. Add a
dummy function for arc, which does not use DRAM init here.

Signed-off-by: Simon Glass

board_f: Rename initdram() to dram_init()

This allows us to use the same DRAM init function on all archs. Add a
dummy function for arc, which does not use DRAM init here.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Dummy function on nios2]
Signed-off-by: Tom Rini <trini@konsulko.com>

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

arc: get rid of running_on_hw

ISS is obsolete now and nSIM is used for simulation instead.
In its turn nSIM properly handles baud-rate settings so get rid
of now useless check.

Signed-off-by: Alexe

arc: get rid of running_on_hw

ISS is obsolete now and nSIM is used for simulation instead.
In its turn nSIM properly handles baud-rate settings so get rid
of now useless check.

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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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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