[GSoC|virtLayer] HelloWorld sample runs

[Joel Sherrill]

Great!

Now for time to pass. :)

On 7/8/2013 1:56 PM, Philipp Eppelt wrote:
> Hi,
>
> I managed to compile and run the HelloWorld sample on POK. :)
>
> Also I set up a blog explaining the build process (5 steps), the current
> development status of the POK and RTEMS side and some issues I faced
> (GDB, Memory & AADL Model).
>
> Have a look:
> http://phipse.github.io/rtems/
>
>
> Here an excerpt from the posts:
>
> # POK:
> rtems-guest is the project containing the AADL model and user code to
> build a partition, which should later become RTEMS. The user code
> implements the virtualization layer.
> After invoking make and letting ocarina(AADL compiler) generating code,
> the part1/Makefile needs to be modified to produce libpart.a - a library
> containing all objects necessary to run the partition, this means
> libpok.a and the user code objects.
>
> # RTEMS:
> The generated libpart.a needs to be provided to i386/virtPok BSP, the
> build process for this BSP will fail, if libpart.a is not present
> (Intended!).
> Then a build directory needs to be created and configured with
> --target=i386-rtems4.11  --enable-rtemsbsp=virtPok
>
> This will build the hello world sample and then fail. As the BSP is
> currently not providing a clock.
>
> # POK again:
> The binary - hello.exe - is a fully functional POK partition. So it goes
> back into the partition used to build libpart.a earlier and overwrite
> part1.elf.
> After rebuilding the POK kernel binary, pok.elf, you can invoke 'make run'.
>
> # Issue - Memory pointer:
> At runtime the partition created a file buffering the writes to pass
> them as one to the kernel. The kernel then checks if the pointer is in
> the partitions memory area. This check failed, as the heap memory
> defined in model.aadl was to small to over RTEMS and POK requirements.
> After extending this, the pointer was valid.
>
>
> Regards,
> Philipp


-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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