[genode] base-hw: SMP support on I.MX6

[Le Guan]

Hi Stefan,
The last post doesn't render correctly. I copied some macro definitions
from freescale SDK, and I have validated that it can kick off the remaining
3 cores. Please find the patched
repos/base-hw/src/core/include/spec/imx6/board.h in the attachment.

Thanks for your amazing work.
Best regards,
Le Guan

On Fri, Oct 2, 2015 at 8:34 AM, Stefan Kalkowski <
stefan.kalkowski at ...1...> wrote:

> Hi Le Guan,
>
> can you provide the changes you did, so we are able to reproduce it?
>
> I know there are still issues with SMP on Cortex A9 in our current
> implementation. They are targeted by the work of Martin Stein on issue
> #1312 in our issue tracker:
>
>   https://github.com/genodelabs/genode/issues/1312
>
> However, the provided solution only uses the Pandaboard, and is not yet
> ready for our master branch. But given your knowledge regarding the
> scratch register used to provide the entrypoints to the additional cpu
> cores, we could test it with the Wandboard.
>
> Regards
> Stefan
>
> On 09/30/2015 12:07 AM, Le Guan wrote:
> > Hello everyone,
> > I wonder if the current release supports SMP in base-hw. I read from the
> > genode book that base-hw has well supported SMP long time ago. But the
> > default configure in wandBoard sets NR_OF_CPUS to 1. When I change that
> > value to 4 and implement several auxiliary SMP functions and run the
> > program, there seems to be some error happen. Below is the output:
> >
> > core 0 enabled
> > kernel initialized
> > core 1 enabled
> > core 2 enabled
> > core 3 enabled
> > Genode 15.08-25-g5cf8c49 <local changes>
> > int main(): --- create local services ---
> > int main(): --- start init ---
> >
> >
> > The booting is stuck here. I have implemented the corresponding
> > Cpu::start_secondary_cpus,  Cpu::primary_id() and Cpu::executing_id().
> What
> > else should I implement to boot SMP?
> >
> > Thanks in advance!
> > Best regards,
> > Le Guan
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> >
> >
> >
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> >
>
> --
> Stefan Kalkowski
> Genode Labs
>
> http://www.genode-labs.com/ · http://genode.org/
>
>
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