Successfully built EPICS 7 with RTEMS 5 for mvme6100

Thu Mar 19 10:37:50 UTC 2020

Thank you so much and all the more for this great initiative of providing
me with an MVME6100 to get the first hand feeling for target development.
I have started working on the next step to get EPICS7 running with RTEMS5
on qemu. As of now, it's looking a bit challenging because I am a bit new
to this and resources on the internet are also hard to find.

Still, I will try my best and report the updates here in the afternoon
(European Time).

I can understand the situation, everyone is stressed due to this Corona
Virus. Hoping for things to improve everywhere.

Stay healthy and  stay safe,
Mritunjay

On Thu, Mar 19, 2020 at 1:08 AM Heinz Junkes <junkes at fhi-berlin.mpg.de>
wrote:

> Hello, Mritunjay,
>
> I will contact you tomorrow during the day (European time).  We have here
> institute closings because of Corona Virus etc..
>
> It's great that you've come this far. I can also provide you with an
> MVME6100 remotely so you can get a feeling for target development.
> Yes, I have also started development of libbsd and the MVME2500. More on
> this tomorrow.
>
> But the first, important step in this proposal would be to get EPICS7
> running with RTEMS5 on e.g. qemu, ideally on i386?
> I think I had some problems with the psim in the past. Unfortunately I
> don't know exactly what it is anymore.
> More tomorrow.
>
> Many greetings and stay healthy,
> Heinz
>
> ------------------------------------------------------------------------------
> Fritz-Haber-Institut    | Phone:         (+49 30) 8413-4270
> Heinz Junkes             | Fax (G3+G4):   (+49 30) 8413-5900
> Faradayweg 4-6        | VC: 102220181216 at bjn.vc
> D - 14195 Berlin        | E-Mail:        junkes at fhi-berlin.mpg.de
>
> ------------------------------------------------------------------------------
>
> > On 18. Mar 2020, at 19:56, Mritunjay Sharma <
> mritunjaysharma394 at gmail.com> wrote:
> >
> > Thank you so much for the feedback. I will research more on the targets
> that can run with the simulator and would like to tell you that looking at
> https://github.com/hjunkes/epicsBaseOwnPlayground/tree/7.0, I feel that
> @Heinz Junkes is already working on libbsd for RTEMS-MVME2500 and I would
> like to hear more from him to get some clarity on what can be done. Being a
> beginner, it's really a great welcome to the world of cross-compiler
> development and testing. :) Thank you for always helping me out!
> >
> > On Wed, Mar 18, 2020 at 11:51 PM Gedare Bloom <gedare at rtems.org> wrote:
> > On Wed, Mar 18, 2020 at 11:40 AM Mritunjay Sharma
> > <mritunjaysharma394 at gmail.com> wrote:
> > >
> > > Hi everyone,
> > >
> > > As a part of working on ticket #3835 (BSP Buildset for EPICS), this is
> to inform the community that after a lot of research, help from RTEMS and
> EPICS community and
> https://epics.mpg.de/index.php?n=Software.EPICSRTEMS?userlang=en, I was
> able to build EPICS 7 for RTEMS 5 for mvme6100 (powerpc-rtems5).
> > > After this, my development environment is almost completely set up
> with RTEMS, rtems-source-builder and epics7 (taken from
> https://github.com/hjunkes/epicsBaseOwnPlayground/tree/7.0 ). While going
> through the entire process, I learnt about the changes to be made in
> epics7/configure/os/CONFIG_STATUS.Common.RTEMS and also encountered few
> errors while the 'make' process, however, it got fixed by commenting line
> 325 to 329 in
> '/home/mritunjay/development/rtems/5/powerpc-rtems5/beatnik/lib/include/rtems/confdefs/libio.h':
> > > //  #ifdef CONFIGURE_FILESYSTEM_ENTRY_DEVFS
> > > //    CONFIGURE_FILESYSTEM_ENTRY_DEVFS,
> > > //  #endif
> > > I would like to know more on why this behaviour occurred. Is it a bug?
> Or something else?
> > >
> > Include some of this detail in your proposal. I don't have time at the
> > moment to delve into details.
> >
> > Next step would be to identify a target you can build EPICS7+RTEMS5
> > with simulator support. This one is challenging since AFAIK there
> > haven't been any successes in that regards. Find out what are the
> > blockers and maybe you can work on those.
> >
> > > I wanted to test it but I am facing issues in connecting with tftp
> server when I run 'scp bin/RTEMS-beatnik/libComTestHarness.boot root at epics
> :/var/lib/tftp'
> > > The following error was encountered:
> > > /usr/bin/ssh: /lib/x86_64-linux-gnu/libcrypto.so.1.0.0: no version
> information available (required by /usr/bin/ssh)
> > > /usr/bin/ssh: /lib/x86_64-linux-gnu/libcrypto.so.1.0.0: no version
> information available (required by /usr/bin/ssh)
> > > ssh: Could not resolve hostname epics: Name or service not known
> > > lost connection
> > > I was wondering what can be the reason behind this, please help me fix
> this.
> > >
> > Test it how -- do you have a powerpc MVME6100 board?
> >
> > I'm guessing whoever gave you that scp command line has a board with a
> > local /etc/hosts entry for 'epics' pointing to some local IP address
> > they connect to their board over.
> >
> > Welcome to the world of cross-compiler development and testing. :)
> >
> https://docs.rtems.org/branches/master/user/hosts/index.html#development-host
> >
> > > Also, what are the next steps? I am working on the GSoC proposal
> currently and since the current ticket #3835 is a shorter project, I have
> to add certain similar sub-tasks within the GSoC timeline as suggested by
> @Gedare Bloom :
> > > "* compile CFS by hand, create an RSB "recipe" to build it, then
> > > integrate it with vertical buildset configuration.
> > > * create vertical buildsets for PC, Raspberry Pi, and other boards.
> > > ** EPICS community uses many powerpc boards so adding something there
> > > would be good."
> >
> > Identify what might be potential simulator targets for you to use, and
> > look at how easy they are to build with RSB. If any are missing
> > support, work on adding them. If any are broken, poke into why.
> >
> > psim is a good powerpc simulator, although it may not have enough
> > support for running epics--I haven't looked.
> >
> > For EPICS it is best to get something working in qemu so that you can
> > run some  networking. So I'd look at some qemu simulator targets and
> > check what is their status and whether you can build and run anything
> > for RTEMS on them. After that, can you build/run any RTEMS networking
> > applications?
> >
> > Does the EPICS7+RTEMS5 stack still using cpukit/libnetworking, or is
> > it able to use libbsd? That is an interesting question to find out.
> >
> > > I would like to have suggestions on resetting the timeline as I work
> on refining the proposal for GSoC based on Dr. @Gedare Bloom's suggestions.
> > >
> > For timeline the first step is to break down all the tasks to figure
> > out what you need to do to accomplish each of your goals. Then you
> > should try to estimate how long you (or mentors) think each task will
> > take, and use that create your plan. (Estimating time is notoriously
> > difficult, but do your best. If it comes in too heavy or light, that
> > is fine, you should put some activities in "Future Improvements" that
> > can be moved into your summer work in case you get through your
> > planned work faster than you expect; if you don't complete all your
> > planned work, we understand and will take everything into
> > consideration during evaluation. Do NOT think of your plan as a
> > contract: it is not, it is a guideline for your summer.)
> >
> > > Thanks
> > > Mritunjay
> > >
>
>
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