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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Joel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Currently I am using the RTEMS toolchain for ARMv8 through Source Builder<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">With Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Raghav<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> users [mailto:users-bounces@rtems.org]
<b>On Behalf Of </b>Raghav Nayak<br>
<b>Sent:</b> Wednesday, March 16, 2016 6:51 PM<br>
<b>To:</b> joel@rtems.org; Jan Sommer<br>
<b>Cc:</b> rtems-users@rtems.org<br>
<b>Subject:</b> RE: RTEMS ARMv8 Port<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Joel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I could build to some extent and when it comes to application it says<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">“error: Cannot change output format whilst linking AArch64 binaries”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Any hints to resolve this problem ? Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">With Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> Raghav<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Joel Sherrill [<a href="mailto:joel@rtems.org">mailto:joel@rtems.org</a>]
<br>
<b>Sent:</b> Wednesday, March 16, 2016 6:05 PM<br>
<b>To:</b> Jan Sommer<br>
<b>Cc:</b> <a href="mailto:rtems-users@rtems.org">rtems-users@rtems.org</a>; Raghav Nayak<br>
<b>Subject:</b> Re: RTEMS ARMv8 Port<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p><br>
On Mar 16, 2016 7:26 AM, <<a href="mailto:soja-lists@aries.uberspace.de">soja-lists@aries.uberspace.de</a>> wrote:<br>
><br>
> Am 2016-03-16 10:32, schrieb Raghav Nayak:<br>
>><br>
>> Hi,<br>
>><br>
>> I am trying to configure RTEMS for ARMv8 target. Tried running the<br>
>> following command:<br>
>><br>
>> ../configure --target=aarch64-rtems4.12 --enable-rtemsbsp=raspberrypi<br>
>> --enable-tests=samples --enable-networking --enable-posix<br>
>> --prefix=/mnt/FSL/pandora/rtems/rtems-armv8-bsp/4.12<br>
>><br>
><br>
> I am no expert in this, but I highly doubt that this is supposed to work.<br>
> So far you only have a cross-compiler for RTEMS for the aarch64 target.<br>
> However, as ARMv8 is a new architecture for RTEMS I would expect that you need to first add support for this new architecture to the RTEMS-kernel and probably the configure scripts as well. I have never done this, so I can't help here. The RTEMS porting guide
might be a first step in understanding what you have to do: <a href="https://docs.rtems.org/doc-current/share/rtems/pdf/porting.pdf">
https://docs.rtems.org/doc-current/share/rtems/pdf/porting.pdf</a><br>
><br>
> Another thing is that you want to build the raspberrypi-bsp. I assume you want to build RTEMS for the raspberry pi 3. The new raspberry uses another cpu as the older versions and of a different target architecture. That means from the operating system's point
of view it differs significantly from the older ones, thus you cannot expect that the bsp for the RPi 1 and RPi 2 will work for the RPi 3.<br>
> No one has added support for the RPi 3 yet. It's very new on the market and RTEMS has currently no ARMv8 support.<o:p></o:p></p>
<p>That's the basics. A new architecture requires adding score/cpu/aarch64 and a new BSP for that architecture c/src/lib/libbsp/aarch64/NEWBSP. I added the GNU tools support.<o:p></o:p></p>
<p>I did notice that gdb has a simulator for aarch64 which means a BSP for that is simple to construct. The gdb simulator is similar on all architectures and we have BSPs for a variety to use as examples. This would be enough to debug core functionality on
the aarch64 and run the tests without interrupt support. <o:p></o:p></p>
<p>Then you have to add interrupt support and move to real HW and add a second BSP.<o:p></o:p></p>
<p>>> But not able to get the output something like this:<br>
>><br>
>> target architecture: aarch64.<br>
>> available BSPs: raspberrypi.<br>
>> 'make all' will build the following BSPs: raspberrypi.<br>
>> other BSPs can be built with 'make RTEMS_BSP="bsp1 bsp2 ..."'<br>
>><br>
>> config.status: creating Makefile<br>
>><br>
>><br>
>> Do you have any clues?<br>
>><br>
>><br>
>> With Regards<br>
>> Raghav<br>
>><br>
>> _______________________________________________<br>
>> users mailing list<br>
>> <a href="mailto:users@rtems.org">users@rtems.org</a><br>
>> <a href="http://lists.rtems.org/mailman/listinfo/users">http://lists.rtems.org/mailman/listinfo/users</a><br>
><br>
> _______________________________________________<br>
> users mailing list<br>
> <a href="mailto:users@rtems.org">users@rtems.org</a><br>
> <a href="http://lists.rtems.org/mailman/listinfo/users">http://lists.rtems.org/mailman/listinfo/users</a><o:p></o:p></p>
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