ARM11 support in RTEMS?

Joel Sherrill joel.sherrill at OARcorp.com
Thu Dec 20 17:50:01 UTC 2012


I created simulator BSPs for the simulator in gdb. I made lots of
CPU variants so we could find the gaps and fill in.

I don't recall if the arm1136 one runs or has issues. But it uses
the simulator built into gdb and is easy to use.

--joel

On 12/20/2012 11:36 AM, Cudmore, Alan P. (GSFC-5820) wrote:
> OK, I see where the arm1136 config is coming from now.
> I thought the list on the ARM EABI page were for an actual BSP directories in libbsp/arm
>
> I assumed where I should have grepped..
>
> Thanks,
> Alan
>
> On Dec 20, 2012, at 12:18 PM, Ralf Corsepius <ralf.corsepius at rtems.org> wrote:
>
>> On 12/20/2012 05:26 PM, Cudmore, Alan P. (GSFC-5820) wrote:
>>> I have been looking at what it would take to create a BSP for the Raspberry Pi board. The Pi uses an ARM1176jzfs ( ARMv6 ).
>>>
>>> The BSP list on this page:
>>> http://www.rtems.org/wiki/index.php/ARM-EABI
>>> lists arm1136jfs and arm1136js BSPs, but I did not see those in the RTEMS git repository.
>> Sorry, but I can't comment on this ;)
>>
>>  From what I see from grepping through the source-tree, there are
>> simulator BSP aiming at arm1136*'s:
>>
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/arm1136jfs.cfg:#  Config file
>> for GDB ARM Simulator as arm1136jf-s (FPU)
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/arm1136jfs.cfg:RTEMS_CPU_MODEL=arm1136
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/arm1136jfs.cfg:CPU_CFLAGS =
>> -mcpu=arm1136jf-s
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/arm1136js.cfg:#  Config file
>> for GDB ARM Simulator as arm1136j-s (no FPU)
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/arm1136js.cfg:RTEMS_CPU_MODEL=arm1136
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/arm1136js.cfg:CPU_CFLAGS =
>> -mcpu=arm1136j-s
>> c/src/lib/libbsp/arm/gdbarmsim/make/custom/armcortexa9.cfg:RTEMS_CPU_MODEL=arm1136
>>
>> but no real BSPs.
>>
>> In cpukit, ARMv6 seems to be aliased to ARMv4.
>>
>> Ralf
>>
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>
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-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
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