[PATCH] ARM: mpu: Ensure that MPU depends on CPU_V7

[Uwe Kleine-König]

On Fri, Jun 07, 2013 at 06:17:53PM +0100, Jonathan Austin wrote:
> The support for the MPU is currently implemented only for R-class
> (PMSAv7/R). Since the merge of V7M support in to the kernel it is possible
> to select MPU support on V7M.
> 
> This patch ensures that until MPU support for M-class processors is
> implemented, the MPU can only be selected with R-class CPUs
> 
> Signed-off-by: Jonathan Austin <jonathan.austin at arm.com>
> Cc: Uwe Kleine-Konig <u.kleine-koenig at pengutronix.de>
> ---
> 
> This patch is necessary now that Russell has merged the V7M work in to his
> devel-stable branch.
> 
> I don't have any immediate plans to implement MPU support for M-class, so this
> patch is important to ensure we don't break building of V7M platforms.
Acked-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

I didn't check, but that might affect other nommu configs for pre-v7
cpu's, too. (I think there is support for an at91 in the tree?!)

Best regards
Uwe

>  arch/arm/Kconfig-nommu |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/Kconfig-nommu b/arch/arm/Kconfig-nommu
> index db597e1..aed66d5 100644
> --- a/arch/arm/Kconfig-nommu
> +++ b/arch/arm/Kconfig-nommu
> @@ -53,6 +53,7 @@ config REMAP_VECTORS_TO_RAM
>  
>  config ARM_MPU
>         bool 'Use the ARM v7 PMSA Compliant MPU'
> +       depends on CPU_V7
>         default y
>         help
>           Some ARM systems without an MMU have instead a Memory Protection
> -- 
> 1.7.9.5
> 
> 
> 

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