Execution time different

[Joel Sherrill]

Arquer Stephane wrote:
> How is it enabled ?
> Is ir done by Trtems or by the bootloader ?
>
>   
Depends on the BSP and configuration.
If the boot ROM usually enables, it then the BSP
developer might have trusted that setting.

I would guess that the best thing to do is
read whatever register indicates it is enabled
once you get to the first application.

--joel
>   
>> -----Message d'origine-----
>> De : Joel Sherrill [mailto:joel.sherrill at oarcorp.com]
>> Envoyé : vendredi 4 avril 2008 18:19
>> À : Arquer Stephane
>> Cc : rtems-users at rtems.com
>> Objet : Re: Execution time different
>>
>>
>> Arquer Stephane wrote:
>>     
>>> Hello,
>>>
>>> I use a leon2  cpu and I have two way to load the code.
>>> The first one is grmon and the other is Redboot with a binary file
>>> generated by sparc-rtems4.7-objcopy -O binary file.elf file.bin. I
>>> don't have the same behaviour with the same code. With
>>>       
>> grmon, a calcul
>>     
>>> function last 120ms With redboot, this function last 340ms
>>>
>>> I check MCFG2 :
>>> Grmon:    03801460
>>> Redboot: B0801460
>>>
>>> And I modified it in grmon but the time is always 120ms.
>>>
>>> Does anyone know what is initialise by grmon which is not done by
>>> Redboot ?
>>>
>>>
>>>       
>> Is caching enabed in both configurations?
>>
>> --joel
>>     
>>> Thanks for help.
>>>
>>>
>>> sa
>>>
>>> _______________________________________________
>>> rtems-users mailing list
>>> rtems-users at rtems.com
>>> http://rtems.rtems.org/mailman/listinfo/rtems-users
>>>
>>>       
>> --
>> 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
>>    Support Available             (256) 722-9985
>>
>>
>>
>>     
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> rtems-users at rtems.com
> http://rtems.rtems.org/mailman/listinfo/rtems-users
>   


-- 
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
   Support Available             (256) 722-9985