On Thu, Jun 7, 2018 at 8:26 AM, Gedare Bloom <ged...@rtems.org> wrote:
> On Wed, Jun 6, 2018 at 10:35 PM, Heinz Junkes <jun...@fhi-berlin.mpg.de> > wrote: > > There is RTEMS 5 support for the MVME2500 made by Sebastian Huber. > > Unfortunately, I have not been able to test it properly with EPICS7. > > I will try it after the Epics meeting and will report. > > > > The BSP support for mvme2500 is in the qoriq family of powerpc BSPs. I > have no clue how difficult it would be to use with 4.10. The APU route > suggested by Till is probably ideal unless you need 'double' types... > If you want to use that BSP, I recommend upgrading RTEMS. There are a lot of differences between 4.10 and the master including SMP, BSP infrastructure improvement, and even qoriq support itself. I think it would be much less work to update RTEMS than to backport the BSP. --joel > > Gedare > > > Heinz > > > >> On 6. Jun 2018, at 23:24, Matt Rippa <mri...@gemini.edu> wrote: > >> > >> Thanks for the fast reply. Of all the mvme boards you listed, > >> the 3100 hits a nice price point and we're attempting to find > >> suitable replacement stock (quantity 30+) for the 2700 which are no > longer > >> manufactured. > >> > >> Are the 6100 boards on beatnik bsp the only remaining option for RTEMS? > >> They cost nearly twice as much and have shown thermal regulation issues. > >> > >> -Matt > >> > >> On Wed, Jun 6, 2018 at 11:10 AM, Michael Davidsaver < > mdavidsa...@ospreydcs.com> wrote: > >> Hi Matt, > >> > >> The MVME3100 is based on the MPC8540 processor. This chip doesn't have > an FPU. > >> Other boards do (eg. mvme270x, mvme6100, or mvme2500) and RTEMS > supports this. > >> > >> I can certainly confirm that lack of an FPU really hurts performance, > even > >> something as (apparently) simple as integer to float. > >> > >> Michael > >> > >> > >> On 06/06/2018 02:03 PM, Matt Rippa wrote: > >> > It appears we've compiled our mvme3100 bsp without FPU support. > >> > We're on the mvme3100 running EPICS 3.14.12.7 and RTEMS 4.10.2. > >> > > >> > We're attempting to commission our astrometric kernel control system > >> > and we've run into trouble meeting some of our thread deadlines. What > >> > we've found is a transform routine that takes our mvme2700 ~200 us, > >> > takes the mvme3100 ~8 ms. So not a surprise to see this with only > "-msoft-float"? > >> > > >> > ... > >> > 2018-05-31-tcs.log:May 31 11:41:15 E) PORT: tcs_vme, MSG: Welcome to > rtems-4.10.2(PowerPC/Generic (*no FPU*)/mvme3100) > >> > > >> > Is FPU support possible with RTEMS 4.10.2? If so, what would we need > to do? > >> > It looks like there's a multilib on 4.11.2 https://docs.rtems.org/ > releases/rtems-docs-4.11.2/cpu-supplement/powerpc.html#multilibs(*Eg., > see #13* ) > >> > > >> > Here's our bsp specs: > >> > > >> > beatnik: > >> > -specs bsp_specs -qrtems -fasm -c -mcpu=7400 -D__ppc_generic -DUNIX > -O2 -g -g -Wall > >> > (mvme2700) mvme-2307: > >> > -specs bsp_specs -qrtems -fasm -c -mcpu=604 -mmultiple -mstring > -mstrict-align -meabi -DUNIX -O2 -g -g -Wall > >> > mvme-3100 > >> > -specs bsp_specs -qrtems -fasm -c -mcpu=powerpc *-msoft-float* > -D__ppc_generic -DUNIX -O2 -g -g -Wall > >> > > >> > Thank you! > >> > -Matt > >> > > >> > >> > >> > >> -- > >> > >> ---------------------------------------------------------------------- > >> Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner > >> Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO) > >> [General Data Protection Regulation (GDPR)] der Europaeischen Union. > >> > > > > > > ---------------------------------------------------------------------- > > Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner > > Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO) > > [General Data Protection Regulation (GDPR)] der Europaeischen Union. > > > > > > _______________________________________________ > > users mailing list > > users@rtems.org > > http://lists.rtems.org/mailman/listinfo/users > _______________________________________________ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users >
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