On 06/17/2014 09:39 PM, Jeremiah Foster wrote:



On Mon, Jun 16, 2014 at 3:27 PM, Philippe Coval <[email protected] <mailto:[email protected]>> wrote:

    hi,

    I've been investigating about ARM support for tizen common

    (we demoed it at TdcSf14, were any of you there ?
    if not watch this :
    https://www.youtube.com/watch?v=6JDy9uUqH4Y
    )


This is great. Do you have other artifacts? Is there a central place we're keeping ARM related links?

With the help of others I try to list all resources or WIP  at :

https://wiki.tizen.org/wiki/ARM


            > 1. Identify a kernel that fits Tizen common and your
        hardware

    since hardware is odroid we'll use that linux-3.10 branch
    maintained by exynos team


This seems reasonable. I note though that the merge window is closed for 3.15, so 3.10 is likely a little bit behind. I wonder what the criteria are for choosing a kernel? It has to be a little more rigorous than "because its there." I think that its a really good start that its done by the exynos team, but are they going to work in the open, accept patches, help with graphics acceleration, support newer kernel features. All the good stuff that comes with real open source collaboration.

This page was created lately :

https://wiki.tizen.org/wiki/How_to_Build_and_Load_Tizen_on_Odroid_U3

But I was unable to reproducethose steps :(

1/ I am looking for u-boot-thor.tar

I thought it was not needed since odroid seems to support boot from sdcard

ubuntu image is booting I checked :
Linux version 3.8.13.16 (root@m1server) (gcc version 4.7.2 (crosstool-NG 1.17.0) ) #1 SMP PREEMPT Tue Feb 11 10:47:21 BRST 2014

2/ and boot from sdcard gets stuck on
Uncompressing Linux... done, booting the kernel.

And I tested with both toolchain linaro and tizen ones

Roman K from samsung poland said he will publish an image to test
maybe he uses a different method

About rootfs I guess the armv7l one I created for sunxi will work
just add built kernel into 1st part of this image :
tizen-common-wayland-arm-sunxi-20140527rzr.raw.gz





            > 2. Compile that kernel, with toolchain, to test on the
        hardware


    done using armv7l EABI


So, in this terminology, armv7l is what debian calls "armel", i.e. softfloat?

I fear yes ... but exynos seems to use linaro toolchain which uses hardfloat EABI
gcc-linaro-arm-linux-gnueabihf-4.8-2014.04_linux.tar.xz

This question is puzzling me for months now,
I havent found an answser yet so I think I may raise a bug to know if tizen should/could support hf ...



    need some  time and/or support to make it work on the odroid u2
    that's where I am now


Its pretty awesome you're doing this. And I hope to be able to get a board and do some testing too.
Tell us if you manage to get some easily


I don't mean to sound negative, but how do we expect to bring in other silicon vendors?

Exynos is hardly representative of the automotive industry.

The current incumbents are companies like Freescale, nvidia, TI, Renesas, and STMicro.
I'll see how I can help on this

Don't you think it better to adopt the process that these companies, along with GENIVI, uses? That is to say use Open Embedded -- Yocto to create recipes for Tizen that can be used against _any_ silicon vendor recipe?

As dominique reported there are on going works at :

https://wiki.tizen.org/wiki/Tizen_on_yocto

But my goal at the moment is to be able to to provide tizen common for arm as we do for x86 x64 (using obs, mic etc)




            > 3. Build Tizen common from source in a build system
        suitable and
            > widely used for ARM hardware.

    this is done because the armv7l rootfs
    worked fine on sunxi boards


Hmm, okay. Should Tizen be listed here then: http://linux-sunxi.org/Bootable_OS_images
Thanks I added it


        While I'm sure the Odroid platform is awesome,

    it has MALI GPU as in other samsung exynos hardware



        does it have automotive connectivity and peripherals? Of
        course, we want something easy to buy and inexpensive so that
        a whole lot of people can buy one,


    the question was asked in list .. can you suggest some


Beagle Bone Black
Wandaboard
Renesas has a lower cost offering.

too bad none of them were suggested when we asked at that time





        but even there Odroid seems a bit of strange choice, wouldn't
        the Beagle Bone Black be better?


    do we have OMAP / PVR GPU support ?


Do you have MALI support?
I hope so :-)
there are some MALI rpm on tizen.org already
(still linking on x11)



        I suspect the lack of available hardware to be a bottleneck,
        especially when a key deliverable for success is an ADK or
        SDK. Isn't it much faster if we use something like the BBB?


    BBB could be an option with or without GPU support ?


With. I think that the binaries are released under the GPL. So you don't get source, but you can redistribute.

no but as said above user can install unfree rpm like we did for rdpq platform




    what are your thoughts on allwinner / sunxi ?


I know people who say it is an awesome chip with excellent price/performance qualities. I also know that they try to be pretty open and seem to get open source. I don't think it is representative of the automotive industry though and I don't know how interested they are in supporting Tizen. We should find out. :-)

I am pretty confident that chips vendors will find some interest to provide tizen support for their consumers ...

At the same time any community projects using cheap platforms
will be good test to check how open and healthy is tizen distro ...

Feel free to ask for help

Regards

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