Integrating RTEMS with ARM Cortex R4

[Sebastian Huber]

On 06/05/2013 05:17 PM, Pritesh Gudge wrote:
> Sebastian Huber <sebastian.huber at ...> writes:
>
>>
>> On 26/01/13 15:07, Jiri Freyvald wrote:
>>>
>>>
>>>
>>> -------- Original Message --------
>>> Subject:     Re: Integrating RTEMS with ARM Cortex R4
>>> Date:     Sat, 26 Jan 2013 14:01:55 +0000
>>> From:     Jiri Freyvald <jiri.freyvald at ...>
>>> To:     priteshgudge at ...
>>>
>>>
>>>
>>> Pritesh,
>>> I have been using RTEMS port for Cortex-M4 and so far it works
>>> perfectly for me
>>> (namely STM32F4DISCOVERY board, STM32F407 processor)
>>> I don't know how close M4 and R4 cores are, but I guess porting BSP
>>> from R4 to M4 shouldn't be too difficult.
>>
>> The ARMv7-M and ARMv7-R are quite different (e.g. in the ARMv7-M we have
>> the mandatory NVIC).
>>
>
> So, as far as I have understood, here are the following points which need to
> be considered for RTEMS-based development:
>
> 1. Check if the CPU is supported: Cortex-R CPUs are supported as per the
> wiki page http://www.rtems.org/wiki/index.php/ARM-EABI

Yes, the Cortex-R is supported.  You should use the Thumb-2 instruction set.

>
> 2. Write a BSP for the requisite Board as it is not available for mine -
> This part I will figure out in due time.
>
> But kindly confirm statement 1.
> I have read your previous comment about the template LPC32XX BSP.
> I will be using the Texas Instrument Microcontroller TMS570LS3137 for the
> development. http://www.ti.com/product/tms570ls3137
>
> I just need a confirmation whether my understanding to this stage is
> correct. Only then will it make sense to commit to developing the requisite
> BSP.

I added a Cortex-A9 BSP recently.  If your chip uses the GIC interrupt 
controller, then please use the code in

http://git.rtems.org/rtems/tree/c/src/lib/libbsp/arm/shared/

-- 
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
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.