OpenRISC patch series...

[Hesham Almatary]

Hi Jakob,

On Fri, Feb 19, 2016 at 11:59 PM, Jakob Viketoft
<jakob.viketoft at aacmicrotec.com> wrote:
>
> ________________________________________
> From: Sebastian Huber [sebastian.huber at embedded-brains.de]
> Sent: Friday, February 19, 2016 13:44
> To: Jakob Viketoft; devel at rtems.org
> Subject: Re: OpenRISC patch series...
>
> >On 19/02/16 13:40, Jakob Viketoft wrote:
> >> ________________________________________
> >> From: devel [devel-bounces at rtems.org] on behalf of Sebastian Huber [sebastian.huber at embedded-brains.de]
> >> Sent: Friday, February 19, 2016 13:37
> >> To:devel at rtems.org
> >> Subject: Re: OpenRISC patch series...
> >>
> >>> >Are these patches relative to the 4.11 branch or the master?
> >> Sorry that I forgot to mention that, they are relative to 4.11 as of d85db176e7d5bcb832ce0764d7db8b94090c4256.
> >
> >Ok, please rebase them on the master. Once they are integrated, we
> >should discuss if they are back ported to 4.11.
>
> Ok, does the format work on this first set? I assume it's okay to resend all 7 patches again, rebased on master.
>
> As for the backporting, most of the changes are crucial for having OpenRISC working at all since there were some mistakes in _ISR_enable/disable and also the link scripts was a pure copy of an arm-variant that didn't make much sense and got the stack wrong. I.e. I hope it will be able to make it to 4.11.
>
The port was working fine late 2014 on both or1ksim and QEMU.
Actually it passed the 467 out of 503 tests part of RTEMS Tester at
this time. In 2015, the port supported running or1k on real hardware
FPGA/Atlys and that's why the BSP name changes from or1ksim to
generic_or1k.

Have you tested the changes on real hardware and/or simulator? I
noticed you said you're using your own toolchain and not RSB. This
might not work for RTEMS, as the port assumes the upstream tools built
by RSB (except for GCC since it didn't get upstream yet). The other
option is to add your own changes to or1k gcc [1] and push any other
patches upstream like what Sebastian suggested.

[1] https://github.com/openrisc/or1k-gcc/tree/or1k-5.2.0


>
> Jakob Viketoft
> Senior Engineer in RTL and embedded software
>
> ÅAC Microtec AB
> Dag Hammarskjölds väg 48
> SE-751 83 Uppsala, Sweden
>
> T: +46 702 80 95 97
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-- 
Hesham