Fwd: [Skyeye-developer] Development plan for SkyEye-1.2.5 in draft

Tue Dec 4 00:52:55 CST 2007

I

2007/12/4, Joel Sherrill <joel.sherrill at oarcorp.com>:
> Yu Chen wrote:
> > hi, joel:
> >  we cut the other cpus or bsps codes besides pc386, the posix, itron,
> > networking codes, to get a small rtems only for pc386.  the source
> > code of rtems-only-for-pc386 size is 1.2MB.
> >
> >  The purpose of rtems-only-for-pc386 is to let my students can
> > bootstrap rtems  quickly and did their homework easily.
> >
> >
> That makes perfect sense. Much more approachable for students. :-D
yes, Now I only spend 4 mins to build the hello.exe on my laptop computer.
If use tmpfs in Linux, the compiling time is <2mins.

>
> Completely off-topic from Skyeye but do you look at all at the
> implementation details? If you do, I am curious if you generate
> the Doxygen for the SuperCore. It is mostly in place but I never
> get time to reformat the rest of the comments to Doxygen.
I didn't generate doxygen. but I analyzed the source codes of rtems carefully.
I found MIT or other universities use JOS or other educational OS as
the OS example for OS implementation course, but I like to use RTEMS
for my OS implementation course.

My graduated students, rayx and I wrote a teaching materials about
RTEMS implementation details (using chinese words),for OS
implementation course (for senior undergraduated students). maybe will
be publised  in June, 2008.

> >  The reason we want to change to cmake, because cmake is faster than
> > autotools and the produced makefiles is readable.
> >  After we finished the cmake version of rtems-only-for-pc386, you can try it.
> >
> >
> I would like to see it. Interesting.
>
> --joel
> > ---------- Forwarded message ----------
> > From: Joel Sherrill <joel.sherrill at oarcorp.com>
> > Date: 2007-12-3 下午11:51
> > Subject: Re: [Skyeye-developer] Development plan for SkyEye-1.2.5 in draft
> > To: skyeye-developer at lists.gro.clinux.org
> >
> >
> > Yu Chen wrote:
> >
> >> Kang and I discussed before, and we think 1~3 should be implemented
> >> first, because these parts are independent from the concrete
> >> processors and is useful to add more debug/test/profile functions on
> >> SkyEye.
> >>
> >>
> >>
> > I'm not arguing about the importance.  Just that some of the
> > test suites we regularly run include > 2000 executable tests
> > which when successful exit cleanly after just seconds of
> > CPU time.  We need a way for the simulated program to
> > make the simulator exit.  So improving testing capabilities
> > for simulated improvements includes some things that make
> > automated testing more efficient.
> >
> >> BTW,
> >> Now my students and I are developing a small rtems for pc386 using cmake.
> >> I think cmake maybe is better than autotools.
> >> KDE4 is good example.
> >>
> >>
> > What do you mean by small?  The code on the CVS head
> > continues to shrink.
> >
> > I don't know that much about cmake but we have a lot invested
> > in autotools so it is highly unlikely we will switch unless
> > the GNU standards themselves change.  That would likely
> > take Moses bring the next Ten Commandments down. :-D
> >
> > --joel
> >
> >> 2007/12/3, Joel Sherrill <joel.sherrill at oarcorp.com>:
> >>
> >>
> >>> Michael.Kang wrote:
> >>>
> >>>
> >>>> After some collection of requirement from some users, I have the
> >>>> following feature list for our next version of SkyEye in my mind:
> >>>> 1. Add autoconf/automake support to deal with some compilation issues
> >>>> and portability in different platforms.
> >>>> 2. Add a unique memory read/wirte interface for all the arch and
> >>>>
> > the devices.
> >
> >>>> 3. Add code coverage profiling function in SkyEye to support OS testing
> >>>> 4. Improve au1100 simulation , make linux and RTEMS BSP run on SkyEye.
> >>>> 5. (optional)  Simulate lemote processor and make lemote BSP of linux
> >>>> run on SkyEye.
> >>>> 6.(optional)  Implement PCI interface ,run some simple PCI peripherals
> >>>> such as PCI uart.
> >>>> 7 (optional) Implement ARMv6 support and simulates integrator machine.
> >>>>
> >>>>
> >>>>
> >>> I appreciate the (2) and (3) items. :)
> >>>
> >>> I would like to add a couple of more items that would help
> >>> RTEMS automated tested.
> >>>
> >>> + some way for the program being run to make Skyeye exit.
> >>>     On other simulators we use, there may be a system call
> >>>     or magic address to write to.   I would be happy with a
> >>>     "shutdown device" which can be mapped into any target's
> >>>     address space at any address.  When you write to it, the
> >>>    simulator exits.
> >>>
> >>>    I ask for the "shutdown device" because most RTEMS tests
> >>>    run < 35 seconds of simulated time and exit cleanly.  This is
> >>>    also the situation for tests from GCC.  If we compiled with
> >>>    optional BSP support for the simulator's shutdown device,
> >>>    this would speed testing.
> >>>
> >>> + A command line limit on simulated CPU time executed.
> >>>    I didn't check if this was present but it is also useful to
> >>>    prevent hanging tests from running for hours.
> >>>
> >>> + A review of the RTEMS Wiki Skyeye page to see if it is up to
> >>>    date and any other configuration makes sense to try.
> >>>   http://www.rtems.org/wiki/index.php/SkyEye
> >>>
> >>> I want to thank the Skyeye community for their support.  It
> >>> has really been nice to see more RTEMS BSPs testable on
> >>> Skyeye.  It is really an aid to us.
> >>>
> >>> --joel
> >>>
> >>>
> >>>> If any guys have more ideas, you are welcome to add more and discuss
> >>>> them. If like to take part in some development of the above feature,
> >>>> you can send email to me.
> >>>>
> >>>> -- Thanks
> >>>> -- Michael.Kang
> >>>>
> >>>>
> >>>>
> >>>>
> >>> _______________________________________________
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> >>>
> >>>
> >>>
> >>
> >>
> >
> >
> > _______________________________________________
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> > http://gro.clinux.org/
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> >
> >
> >
>
>

-- 
Best Regards
==============================================
Chen Yu
Laboratory of Pervasive Computing,
Dept. of Computer Science and Technology
Tsinghua University, Beijing 100084, P.R. China
E-Mail: mailto:yuchen at tsinghua.edu.cn  chyyuu at gmail.com
==============================================