[OpenWrt-Devel] [PATCH v5] linux: add support of Synopsys ARC770-based boards

[Alexey Brodkin]

Hi Felix, Jonas,

On Tue, 2015-11-17 at 16:47 +0300, Alexey Brodkin wrote:
> Hi Felix, Jonas,
> 
> On Fri, 2015-11-13 at 21:39 +0300, Alexey Brodkin wrote:
> > This patch introduces support of new boards with ARC cores.
> > 
> >  [1] Synopsys SDP board
> >      This is a new-generation development board from Synopsys that
> >      consists of base-board and CPU tile-board (which might have a real
> >      ASIC or FPGA with CPU image).
> >      It sports a lot of DesignWare peripherals like GMAC, USB, SPI, I2C
> >      etc and is intended to be used for early development of ARC-based
> >      products.
> > 
> >  [2] nSIM
> >      This is a virtual board implemented in Synopsys proprietary
> >      software simulator (even though available for free for open source
> >      community). This board has only serial port as a peripheral and so
> >      it is meant to be used for runtime testing which is especially
> >      useful during bring-up of new tools and platforms.
> >      What's also important ARC cores are very configurable so there're
> >      many variations of options like cache sizes, their line lengths,
> >      additional hardware blocks like multipliers, dividers etc. And this
> >      board could be used to make sure built software still runs on
> >      different HW configurations.
> > 
> > Cc: Felix Fietkau <nbd at openwrt.org>
> > Cc: Jo-Philipp Wich <jow at openwrt.org>
> > Cc: Jonas Gorski <jogo at openwrt.org>
> > Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> > ---
> > Changes compared to v4:
> >  * Removed DTS variable from profile descriptions in
> >    target/linux/arc770/generic/profiles/0x-yyy
> >  * Reworked board type detection in base-files/lib/arc.sh
> >    Now looking for a full match of "compatible" property.
> > 
> > Changes compared to v3:
> >  * Accomodate new KERNEL_INITRAMFS_NAME variable for building .elfs
> >  * Add and use "model" property in device tree description
> >  * Remove extra console from kernel command line
> >  * Use new buildsystem for resulting images
> >  * Nuked ARC-specific inittab, use default one instead
> >  * Linux kernel config is passed through "make kernel_oldconfig"
> >  * eth0 is now LAN instead of WAN
> > 
> > Changes compared to v2:
> >  * Fixed copyright dates
> >  * Cleaned-up init scripts
> > 
> > Changes compared to v1:
> >  * Switched to SoC-centered design. Now instead of common ARC700
> >    support we claim support of boards based on ARC770D.
> >    This allows to use the same one build of kernel binary for both
> >    boards.
> >  * Implemented run-time scripts that parse Device Tree compatible
> >    tag and according to it do configuration of serial port and network.
> >  * Implemented ability to patch in built Linux kernel external .dtb
> >  * Linux kernel switched from 4.1 to 4.3
> >  * Rebased on current master
> 
> Any comments on this one or there's a chance it could be applied?

Ping!

-Alexey
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