Current state of RISC-V BSP

[Denis Obrezkov]

2017-08-09 2:56 GMT+02:00 Hesham Almatary <heshamelmatary at gmail.com>:

> Hi Denis,
>
> That's good to know. You might want to try running other samples now
> that are not low-memory and see if they work.
>
> Cheers,
> Hesham
>
> On Tue, Aug 8, 2017 at 7:51 PM, Denis Obrezkov <denisobrezkov at gmail.com>
> wrote:
> > 2017-08-07 0:49 GMT+02:00 Denis Obrezkov <denisobrezkov at gmail.com>:
> >>
> >> 2017-08-07 0:44 GMT+02:00 Hesham Almatary <heshamelmatary at gmail.com>:
> >>>
> >>> Hi Denis,
> >>>
> >>> Thanks for sharing the state of HiFive1 BSP. At this stage of GSoC, we
> >>> would want you to clean-up the code, write documentations/comments and
> >>> submit your code for review (probably to my GitHub repo).
> >>> Details/instructions how to use your code (compile, build, run, etc)
> >>> are also important.
> >>>
> >>> Cheers,
> >>> Hesham
> >>>
> >>> On Mon, Aug 7, 2017 at 7:25 AM, Denis Obrezkov <
> denisobrezkov at gmail.com>
> >>> wrote:
> >>> > Hello all,
> >>> >
> >>> > currently I have some issues with optimization flags.
> >>> > First of all, the low ticker example doesn't work with any
> optimization
> >>> > flags.
> >>> > Secondly, the hello example is too big and doesn't fit into memory
> >>> > without
> >>> > optimization.
> >>> > And, in conclusion, scanf requires a clock driver, but as I said it
> >>> > still
> >>> > doesn't
> >>> > work with optimization flags, so I can't test it.
> >>> >
> >>> > Also, I want to say that on this stage the BSP is very fragile and
> >>> > requires
> >>> > proper configuration options to be set.
> >>> >
> >>> > --
> >>> > Regards, Denis Obrezkov
> >>> >
> >>> > _______________________________________________
> >>> > devel mailing list
> >>> > devel at rtems.org
> >>> > http://lists.rtems.org/mailman/listinfo/devel
> >>>
> >>>
> >>>
> >>> --
> >>> Hesham
> >>
> >> Yes, I will try to do it till this Wednesday.
> >>
> >>
> >> --
> >> Regards, Denis Obrezkov
> >
> > Sorry, I was too curious and found out why the low ticker example didn't
> > work with -Os optimization flag.
> > I found out that global interrupts aren't enabled back after task
> creation
> > or starting routing. Thus, I have modified the code
> > in this way:
> >
> > for (i=1 ; i<=3 ; i++ ) {
> >       status = rtems_task_create(
> >         rtems_build_name( 'T', 'A', 0x30+1, ' ' ), 1, 0,
> > RTEMS_DEFAULT_MODES,
> >         RTEMS_DEFAULT_ATTRIBUTES, &id
> >       );
> >       status = rtems_task_start( id, Test_task, i );
> >     }
> > asm volatile ("csrsi mstatus, 0x8");  //I've added this line
> >
> > And it works.
> > Now I can proceed with documentation and clean up the code.
> > --
> > Regards, Denis Obrezkov
>
>
>
> --
> Hesham
>

It is still required to locate this error and correct it - as for now I
have only a quick fix solution
for one example.

-- 
Regards, Denis Obrezkov
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