Commit Graph

46 Commits

Author SHA1 Message Date
Anas Nashif c3827ec48e boards: add vendor to board yaml
This is coming from devicetree and corrosponds to what we have in the
dts/bindings/vendor-prefixes.txt file.

This will allow for static filtering, especially with twister, i.e. no
need to build anything to know the vendor of a board

All of the vendor data was extracted automatically from the devicetree,
so some platforms might not have the right vendor or no vendor at all
right now, we need to fix some of the DTS information or do this
manually to get this 100% correct. But we are close.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2023-09-22 09:29:36 +02:00
Nikolay Agishev 66b80396e6 arc: boards: openocd: replace obsolete syntax
Replace obsolete syntax in OpenOCD configuration scripts

Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
2023-04-19 03:45:58 -04:00
Evgeniy Paltsev fb0802a5b6 ARC: boards: allow cross-compile toolchain where zephyr toolchain supported
Allow cross-compile toolchain for all ARC target which support zephyr
toolchain.

This aligns the behavior between ARC targets - as some of them
were supporting zephyr toolchain but weren't supporting cross-compile
toolchain (which wasn't actually true).

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
2023-01-30 23:48:31 +00:00
Siyuan Cheng 9a7ed58b25 arc: add XY mem support
The XY Memory is a feature commonly found in DSP processors to increase
the DSP performance. The XY component allows a ARC processor to
implicitly load source operands and store results into a closely coupled
memory using a single instruction.

Add XY memory for ARC EM9D/EM11D processors including em_starterkit,
em_starterkit_em11d. emsdp_em9d, nsim_em, iotdk.

Signed-off-by: Siyuan Cheng <siyuanc@synopsys.com>
2022-12-12 14:38:13 +00:00
Stephanos Ioannidis b6d312a7ac boards: arc: Update outdated links
This commit updates the outdated ARC board links.

Signed-off-by: Stephanos Ioannidis <stephanos.ioannidis@nordicsemi.no>
2022-09-29 12:20:14 +02:00
Gerard Marull-Paretas e81e92dbb9 boards: convert images to JPEG and reduce image size
The boards folder uses ~142.8 MB, being the largest in the repository.
This is due mostly to board images, which are in most cases not
optimized for web content. This patch tries to address this problem by
converting all pictures to JPEG (quality 75) and by adjusting its size
up to 750 px (the width of the documentation content). Images that
specified a fixed width in rst files are converted down to that value
instead.

With this patch, folder goes down to ~53.5 MB from 142.8 MB (-~63%).
Note that this patch introduces a new set of binary files to git
history, though (bad).

The process has been automated using this quickly crafted Python script:

```python
from pathlib import Path
import re
import subprocess

def process(doc, image, image_jpeg, size):
    subprocess.run(
        (
	     f"convert {image}"
	     "-background white -alpha remove -alpha off -quality 75"
	     f"-resize {size}\> {image_jpeg}"
	),
        shell=True,
        check=True,
        cwd=doc.parent,
    )
    if image != image_jpeg:
        (doc.parent / image).unlink()

for doc in Path(".").glob("boards/**/*.rst"):
    with open(doc) as f:
        content = ""
        image = None
        for line in f:
            m = re.match(r"^(\s*)\.\. (image|figure):: (.*)$", line)
            if m:
                if image:
                    process(doc, image, image_jpeg, size)

                image = Path(m.group(3))
                if image.suffix not in (".jpg", ".jpeg", ".png"):
                    content += line
                    image = None
                    continue

                image_jpeg = image.parent / (image.stem + ".jpg")
                size = 750
                content += (
                    f"{m.group(1)}.. {m.group(2)}:: {image_jpeg}\n"
                )
            elif image:
                m = re.match(r"\s*:height:\s*[0-9]+.*$", line)
                if m:
                    continue

                m = re.match(r"\s*:width:\s*([0-9]+).*$", line)
                if m:
                    size = min(int(m.group(1)), size)
                    continue

                content += line
                if line == "\n":
                    process(doc, image, image_jpeg, size)
                    image = None
            else:
                content += line

    with open(doc, "w") as f:
        f.write(content)
```

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-08-29 10:18:18 +02:00
Gerard Marull-Paretas 28599ec372 boards: arc: increase documentation image widths
Some board pictures contain text that is difficult to read with current
width. Increase it to 650px.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-08-29 10:18:18 +02:00
Gerard Marull-Paretas 683f2de6d2 boards: arc: remove unused <soc.h>
Header was not used, so remove it. Add other necessary includes as part
of the removal.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-08-03 07:46:14 -04:00
Stephanos Ioannidis 2598f0ed3c doc: toolchains: Add Zephyr SDK documentation
This commit adds a dedicated page for the Zephyr SDK under the
'Toolchains' sub-category under 'Developing with Zephyr'.

The content of this page is based on the Zephyr SDK installation
instruction from the 'Getting Started Guide'.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2022-06-01 15:26:48 +02:00
Maureen Helm de514bb7d0 dts: arc: synopsys: Move SoC devicetree includes under a vendor dir
Cleans up SoC devicetree include file locations to follow the convention
of dts/<arch>/<vendor>/

Signed-off-by: Maureen Helm <maureen.helm@intel.com>
2022-05-09 17:54:48 -04:00
Gerard Marull-Paretas db508379c2 boards: migrate includes to <zephyr/...>
In order to bring consistency in-tree, migrate all boards code to the
new prefix <zephyr/...>. Note that the conversion has been scripted,
refer to zephyrproject-rtos#45388 for more details.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-05-06 19:57:15 +02:00
Anas Nashif b3abe11104 boards: remove CONFIG_PRINTK from board _defconfig
We should not enable this config in the board, this is an
application config.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2021-10-18 09:49:45 -04:00
Eugeniy Paltsev 8311d27afc ARC: Kconfig: cleanup CPU_ARCEM / CPU_ARCHS options usage
Don't allow user to choose CPU_ARCEM / CPU_ARCHS options
but select them when exact CPU type (i.e. EM4 / EM6 / HS3X/ etc)
is chosen.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
2021-03-25 07:23:02 -04:00
Watson Zeng 77e1d4d710 board: arc: accommodate upstream OpenOCD for ARC
In newer OpenOCD version from Zephyr's SDK v0.12, there are some
changes in OpenOCD scripts: JTAG probe interface (AKA "adapter")
setup, see http://openocd.zylin.com/#/c/5784/

And so we need to change OpenOCD scripts accordingly to match
newer OpenOCD version from Zephyr's SDK v0.12.

Signed-off-by: Watson Zeng <zhiwei@synopsys.com>
2020-12-16 14:27:23 +01:00
Eugeniy Paltsev 91d7ec5a35 ARC: west: split mdb runner for mdb-hw & mdb-nsim runners
mdb runner is quite special as it can be used to run Zephyr on
both simulator (nSIM) and real hardware.
However it is really misleading as same command (west flash)
will run Zephyr in simulation for one board and try to run it
on HW for another board. Things are getting worse for boards
supporting both runs in simulation and on real hardware.

Let's split mdb runner for mdb-hw (for runs on HW) and mdb-nsim
(for runs in simulation) runners.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
2020-11-11 08:18:38 -05:00
Wayne Ren 9b0bb2b4af boards: enable mdb runner for arc boards
* current supported boards:
   * emsk, iotdk, nsim, emsdp, hsdk.
* for the unsupported future boards, pls take a
  reference of supported boards' board.cmake.
* mdb runner is required and the default runner for SMP
  case, e.g., HSDK and nsim_hs_smp.
* other ARC boards can also choose to use mdb by
  setting runner as mdb, e.g. west flash --runner mdb.
* with mdb runner, user can make a debug through mdb gui
* with arc_nsim or opencod runner (default runner), user
  can make a debug through gdb cmdline.

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2020-06-11 10:02:11 -04:00
Kumar Gala e7332f924b soc: arc: Use new dts macros in linker scripts and arc_mpu_regions
Convert linker scripts and arc_mpu_regions.c setup to use new
devicetree.h macros to extract the base address and size of the various
memory regions (DDR, SRAM, FLASH, DCCM, ICCM).  We also remove the
scaling up and down since DT_REG_SIZE() returns the value in bytes.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-04-30 13:29:48 -05:00
Alexey Brodkin 9c6a6c4e68 boards: arc: Load Elf with OpenOCD by default
Now when ARC development boards are switched to generic OpenOCD
runner we need to explicitly instruct the runner to load Elf but not
binary image (which is a default for OpenOCD runner).

This might be done either manually adding "--use-elf" option to
west's command line or that might be added by default fro affected
boards, which we do exactly now.

Fixes https://github.com/zephyrproject-rtos/zephyr/issues/22888.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-02-18 09:58:47 -05:00
Alexey Brodkin 3b8cf7e389 board: arc: Disable gap filling in output .hex
Some ARC deveopment boards have q bit funny memory maps.
For example IoT Development Kit board has those areas
that we use in Zephyr:

 1. 256 KiB of ICCM @ 0x2000_0000 for code
    (i.e. ".text" section goes here)
 2. 128 KiB of DCCM @ 0x8000_0000 for data
    (i.e. ".data" section goes here)

And so objcopy dumps 0x6000_0000 bytes (which is ~ 1.5Gib or raw data)
in zephyr.hex which gives us ~ 4.3 GiB of resulting zephyr.hex size.

W/o gap filling we're back at normal tens of KiB.

Given we have currently no need to fill the gaps anyways we disable it
for all ARC devboards.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-02-13 10:45:44 +02:00
Alexey Brodkin 5bd2857c73 board: arc: Switch to generic OpenOCD runner
We used to use "em-starterkit" runner for ARC which is
basically heavy-modified "openocd" runner tweaked to
use GDB for loading and starting Elf files.

Now when loading and running Elf files is possible with generic
"openocd" runner we may us it. So we switch and get rid of
"em-starterkit" as well since we no longer need it.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-02-13 10:45:44 +02:00
Alexey Brodkin 946ed0e369 board: arc: Enable selection of FTDI instance by its serial number
To be used in setups with multiple boards attached to the same one
host we need to have an ability to specify precisely which JTAG probe
to use for a particular board.

This is done by passing "ftdi_serial XXX" command to OpenOCD.
And the serial ("XXX") is supposed to be passed from higher level,
typically via west's options.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-02-13 10:45:44 +02:00
Ulf Magnusson a42a42cd5a kconfig: Replace defconfig singe-symbol 'if's with 'depends on'
Same deal as in commit eddd98f ("kconfig: Replace some single-symbol
'if's with 'depends on'"), for all symbols defined within defconfig
files. See that commit for an explanation.

Maybe 'if's were used originally to mirror the 'if's in the main Kconfig
files, and then it got copied around by people assuming 'if' must work
differently from 'depends on'. It doesn't match in every spot at least.
Better to keep it simple and just consistently use 'depends on' when
it's a single symbol/choice I think. Helps reinforce that 'if' isn't
magic too.

Verified by printing all Kconfig menu nodes (symbols, choices, menus,
etc.) before and after the change and diffing (should show no
difference).

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2020-02-12 10:32:13 -06:00
Ulf Magnusson c5839f834b kconfig: Remove assignments to CONFIG_<arch> syms and hide them
All board defconfig files currently set the architecture in addition to
the board and the SoC, by setting e.g. CONFIG_ARM=y. This spams up
defconfig files.

CONFIG_<arch> symbols currently being set in configuration files also
means that they are configurable (can be changed in menuconfig and in
configuration files), even though changing the architecture won't work,
since other things get set from -DBOARD=<board>. Many boards also allow
changing the architecture symbols independently from the SoC symbols,
which doesn't make sense.

Get rid of all assignments to CONFIG_<arch> symbols and clean up the
relationships between symbols and the configuration interface, like
this:

1. Remove the choice with the CONFIG_<arch> symbols in arch/Kconfig and
   turn the CONFIG_<arch> symbols into invisible
   (promptless/nonconfigurable) symbols instead.

   Getting rid of the choice allows the symbols to be 'select'ed (choice
   symbols don't support 'select').

2. Select the right CONFIG_<arch> symbol from the SOC_SERIES_* symbols.
   This makes sense since you know the architecture if you know the SoC.

   Put the select on the SOC_* symbol instead for boards that don't have
   a SOC_SERIES_*.

3. Remove all assignments to CONFIG_<arch> symbols. The assignments
   would generate errors now, since the symbols are promptless.

The change was done by grepping for assignments to CONFIG_<arch>
symbols, finding the SOC_SERIES_* (or SOC_*) symbol being set in the
same defconfig file, and putting a 'select' on it instead.

See
https://github.com/ulfalizer/zephyr/commits/hide-arch-syms-unsquashed
for a split-up version of this commit, which will make it easier to see
how stuff was done. This needs to go in as one commit though.

This change is safer than it might seem re. outstanding PRs, because any
assignment to CONFIG_<arch> symbols generates an error now, making
outdated stuff easy to catch.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2020-02-08 00:50:08 -06:00
Kumar Gala 1dc4b1dd2f boards: shrink image sizes
Reduce images sizes of boards.  Get a roughly 3x reduction in size.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-02-07 13:52:45 -05:00
Ulf Magnusson 4e85006ba4 dts: Rename generated_dts_board*.{h,conf} to devicetree*.{h,conf}
generated_dts_board.h is pretty redundant and confusing as a name. Call
it devicetree.h instead.

dts.h would be another option, but DTS stands for "devicetree source"
and is the source code format, so it's a bit confusing too.

The replacement was done by grepping for 'generated_dts_board' and
'GENERATED_DTS_BOARD'.

Two build diagram and input-output SVG files were updated as well, along
with misc. documentation.

hal_ti, mcuboot, and ci-tools updates are included too, in the west.yml
update.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2020-01-17 17:57:59 +01:00
Ulf Magnusson bd6e04411e kconfig: Clean up header comments and make them consistent
Use this short header style in all Kconfig files:

    # <description>

    # <copyright>
    # <license>

    ...

Also change all <description>s from

    # Kconfig[.extension] - Foo-related options

to just

    # Foo-related options

It's clear enough that it's about Kconfig.

The <description> cleanup was done with this command, along with some
manual cleanup (big letter at the start, etc.)

    git ls-files '*Kconfig*' | \
        xargs sed -i -E '1 s/#\s*Kconfig[\w.-]*\s*-\s*/# /'

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-04 17:31:27 -05:00
Wayne Ren f2fd40e90d ARC: Add support for ARC HS family of CPU cores
The ARC HS is a family of high performance CPUs from Synopsys
capable of running wide range of applications from heavy DPS
calculation to full-scale OS.

Still as with other ARC cores ARC HS might be tailored to
a particular application.

As opposed to EM cores ARC HS cores always have support of unaligned
data access and by default GCC generates such a data layout with
so we have to always enable unaligned data access in runtime otherwise
on attempt to access such data we'd see "Unaligned memory exception".

Note we had to explicitly mention CONFIG_CPU_ARCEM=y in
all current defconfigs as CPU_ARC{EM|HS} are now parts of a
choice so we cannot simply select ether option in board's Kconfig.

And while at it change "-mmpy-option" of ARC EM to "wlh1"
which is the same as previously used "6" but matches
Programmer's Reference Manual (PRM) and is more human-friendly.

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-07-31 09:25:15 -07:00
Piotr Zięcik 7d56fc35fd dts: Add information about CPU frequency to the cpu nodes
This commit adds 'clock-frequency' property to the cpu nodes.
The clock frequency specified in the added property is used
during platform configuration. Examples:

- The SWO logger uses clock frequency to configure SWO output.
- Plenty of platforms need CPU clock specified for their HAL.
- Most of devices with USB needs information about CPU clock
  in order to configure USB clock source.

Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
2019-07-17 21:53:36 +02:00
Andy Ross b142033b91 boards/arc: Remove tick rate settings for ARC hardware
The ARC timer is a MHz-scale cycle counter and works very well with
the new 10 kHz default tick rate.  Remove the settings for ARC
hardware.

Note that the nsim board definitions are left at 100 Hz.  That is a
software emulation environment that (like qemu) exposes the host clock
as "real" time and thus is subject to clock jitter due to host
scheduling.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-07-02 22:52:29 -04:00
Ulf Magnusson a84ded74ea dts: Replace status = "ok" with status = "okay"
The DT spec. only has "okay" and not "ok". The Linux kernel has around
12k "okay"s and 300 "ok"s.

The scripts/dts scripts only check for "disabled", so should be safe re.
those at least.

The replacement was done with

    git ls-files | xargs sed -i 's/status\s*=\s*"ok"/status = "okay"/'

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-06-14 19:51:13 -05:00
Anas Nashif 5ec6a537a3 doc: fix path to gdb in documentation
Documents were still pointing to gdb path of old SDK.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-11 22:07:52 -04:00
Marti Bolivar 35d4e62300 boards: allow cmake-time overrides of all runners
Convert all board_set_xxer(foo) calls to board_set_xxer_ifndef(foo),
which allows the user to make their own decision at CMake time.

Signed-off-by: Marti Bolivar <marti.bolivar@nordicsemi.no>
2019-06-07 13:43:51 +02:00
Marti Bolivar 1717332c7a cmake: add helpers for setting board runners
This helps by letting us add checks for when the runner has already
been set. There is documentation saying you can set
-DBOARD_DEBUG_RUNNER at the command line and have it take effect,
which turns out not to be true for a large number of boards.
A status message helps the user debug.

(We'll address the existing in-tree boards in the next patch.)

Signed-off-by: Marti Bolivar <marti.bolivar@nordicsemi.no>
2019-06-07 13:43:51 +02:00
Alexey Brodkin 40dbec4cd1 ARC: Mention ARC EM family instead of EM4 template
ARC EM4 is just a baseline configuration of ARC EM family of CPU cores.
But with addition of more featuers like caches, DSP extensions etc
we're effectively getting EM6, EM5D etc templates.

So to not confuse users let's talk about families of ARC cores
as that's what makes sense together with extra features but not
templates itself.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-06-06 14:20:42 -04:00
Wayne Ren b69ed0373e boards: iotdk: add mpu and fpu configuration
* iotdk supports fpu and mpu
* iotdk supports fast irq
* a fix in device tree

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-04-29 09:03:24 -07:00
Ulf Magnusson 7fdb525754 kconfig: Use 'default' instead of 'def_bool' in Kconfig.defconfig files
Same deal as in commit 4638652214 ("Kconfig: Use 'default' instead of
'def_bool' in Kconfig.defconfig files"), fixing new stuff that got
introduced since then.

Some symbols, like ALTERA_AVALON_PIO, are only defined in
Kconfig.defconfig files, and so need the def_bool.

Motivation (from the note at the end of
guides/kconfig/index.html#common-shorthands):

For a symbol defined in multiple locations (e.g., in a Kconfig.defconfig
file in Zephyr), it is best to only give the symbol type for the "base"
definition of the symbol, and to use 'default' (instead of 'def_<type>'
value) for the remaining definitions. That way, if the base definition
of the symbol is removed, the symbol ends up without a type, which
generates a warning that points to the other definitions. That makes the
extra definitions easier to discover and remove.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-04-18 12:20:49 -04:00
Anas Nashif 3ae52624ff license: cleanup: add SPDX Apache-2.0 license identifier
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier.  Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.

By default all files without license information are under the default
license of Zephyr, which is Apache version 2.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-04-07 08:45:22 -04:00
Wayne Ren a1c2159acb arch: arc: refactor the ARC MPU driver
* separate the ARC MPU driver into 2 parts
  * arc_mpu_v2_internal.h for ARC MPUv2
  * arc_mpu_v3_internal.h for ARC MPUv3
* For ARC MPUv2, keep the main design, but update and optimize the code
* For ARC MPUv3, implement mpu region split to supprt MPU region overlap
* misc updates and bug fixes

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-03-14 23:53:16 -07:00
Ulf Magnusson 53376394b7 kconfig: Remove blank lines at the beginning/end of files
Maybe this is some "just in case" thing that got copied around. There's
no need to have a blank line at the beginning or end of Kconfig files.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-03-13 07:29:42 -05:00
David B. Kinder 505cc2bb0e doc: use :zephyr_file: where appropriate
A new role :zephyr_file: is available that renders to a link to the file
or folder in GitHub.  Find appropriate references using :file: and
convert to :zephyr_file: to take advantage of its linking capability.

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2019-03-09 09:50:27 -05:00
Kumar Gala a78c2fa8d2 boards: arc: iotdk: Fix missed CONFIG -> DT define transition
The ICCM/DCCM defines come from DT so they should be DT_ prefixed and
not CONFIG_ prefixed.  Fix that in arc_mpu_regions.c.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2019-02-11 22:29:58 -05:00
Anas Nashif acaae579cc doc: boards: make board images consistent with board name
Having the image use the same name will help us script listing the
boards.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-10 17:48:08 -05:00
Anas Nashif 0e4ff809d7 doc: boards: move all board docs to be index.rst
Be consistent in how board docs are named and move all to index.rst.
This will make the URL to the board documentation predictable and easier
to remember.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-09 17:22:08 -06:00
David B. Kinder c1dce2f799 doc: fix misspellings in docs
Fix misspellings missed in regular reviews.

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2019-02-07 22:06:14 -05:00
Wayne Ren 6b5dea578e board: iotdk: bug fixes and remove unsupported drivers config
* i2c, spi, gpio are not tested, remove them now.
* fix the license issue in openocd.cfg
* fix the shell related setting

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-01-10 07:05:51 -05:00
Wayne Ren 022f061632 board: add the initial support of iotdk
The initial support of iotdk which is a board based on Synopsys
ARC IoT SoC.

In this commit, it includes

* processor support
* UART driver

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-01-10 07:05:51 -05:00