SMP support for Raspberry Pi 2

[Joel Sherrill]

On 7/13/2015 1:24 PM, Rohini Kulkarni wrote:
> I did change the configure file to add support for --enable-smp option.
>
> Ok, I suppose that is the problem.

You need to edit the configure.ac and then bootstrap again. Look at
sparc/leon3, powerpc/qoriq, or i386/pc386 for examples.

You need to configure with --enable-smp and make sure the cpuopts.h
has this. It will be a configure in a clean directory. I am pretty
sure it will be set even when the BSP doesn't really support SMP.

> What is the sb option for?

He was referring to the "sb-bootstrap" program in rtems-source-builder/source-builder.
You can also just run the bootstrap found in the top of the rtems tree in the
raspberrypi directory. sb-bootstrap parallelizes the process but if you only do
one directory, that doesn't matter.

> On 13 Jul 2015 21:13, "Gedare Bloom" <gedare at gwu.edu <mailto:gedare at gwu.edu>> wrote:
>
>     Did you change configure, or configure.ac <http://configure.ac>?
>
>     After you change configure.ac <http://configure.ac> or Makefile.am files, you need to run
>     sb-bootstrap again.
>
>     On Sun, Jul 12, 2015 at 7:05 AM, Rohini Kulkarni <krohini1593 at gmail.com <mailto:krohini1593 at gmail.com>> wrote:
>      > Hi,
>      >
>      > I don't have #define RTEMS_SMP 1 in cpuopts.h.
>      >
>      > Have made changes only to libbsp/arm/raspberrypi/configure .
>      >
>      > On Sun, Jul 12, 2015 at 1:50 AM, Sebastian Huber
>      > <sebastian.huber at embedded-brains.de <mailto:sebastian.huber at embedded-brains.de>> wrote:
>      >>
>      >> In the build tree, there are exactly two identical "cpuopts.h" files. In
>      >> this file you must find a:
>      >>
>      >> /* if SMP is enabled */
>      >> #define RTEMS_SMP 1
>      >>
>      >> --
>      >>
>      >> Sebastian Huber, embedded brains GmbH
>      >>
>      >>
>      >> Address : Dornierstr. 4, D-82178 Puchheim, Germany
>      >> Phone   : +49 89 189 47 41-16
>      >> Fax     : +49 89 189 47 41-09
>      >> E-Mail  : sebastian.huber at embedded-brains.de <http://embedded-brains.de>
>      >> PGP     : Public key available on request.
>      >>
>      >>
>      >> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>      >
>      >
>      >
>      >
>      > --
>      > Rohini Kulkarni
>      >
>      > _______________________________________________
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>      > devel at rtems.org <mailto:devel at rtems.org>
>      > http://lists.rtems.org/mailman/listinfo/devel
>

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