help -- barebox on ARM Cortex M3

help -- barebox on ARM Cortex M3

[Murthy, Ramana]

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Hi All,

I am new to barebox. Now a days I am trying to port a good bootloader onto ARM Cortex M3 based board. The board has enough memory, Serial and Ethernet interfaces.
Only thing lacking in Cortex M3 is MMU. Instead there is MPU(Memory Protection Unit).

Does barebox support ARM devices without MMU? If Yes, please point me to the related links.

Thanks in advance.

Best Regards,
N.S.S.R.Murthy,
Ph # +91-40-67303600, Extn - 3731,
Mobile # +91-9959677780.


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Re: help -- barebox on ARM Cortex M3

[Jean-Christophe PLAGNIOL-VILLARD]

Hi,

	please do not write HTML e-mail use plain/text
On 14:07 Tue 17 May     , Murthy, Ramana wrote:
>    Hi All,
> 
>     
> 
>    I am new to barebox. Now a days I am trying to port a good bootloader onto
>    ARM Cortex M3 based board. The board has enough memory, Serial and
>    Ethernet interfaces.
> 
>    Only thing lacking in Cortex M3 is MMU. Instead there is MPU(Memory
>    Protection Unit).
> 
>     
> 
>    Does barebox support ARM devices without MMU? If Yes, please point me to
>    the related links.
Basicaly Barebox does not enable the MMU on ARM but actually the assembly is
not write to be 100% compliant with Thumb2. Otherwise you will not have big
issue to add the M3 support

To enable the MMU you need to enable CONFIG_MMU otherwise noMMU enabled by
default

Best Regards,
J.

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