Subject: [PATCH] Change the internal SRAM memory type MT_MEMORY_NONCACHED

From: [email-masked] (Nicolas Ferre)
Date: Thu, 13 Jun 2013 15:19:58 +0200

On 08/06/2013 04:17, Wenyou Yang :
> Because MT_DEVICE is not executable in armv7, we change
> the internal SRAM memory type to MT_MEMORY_NONCACHED.
> As it seems that caching this internal SRAM memory is not necessary,
> we chose the this memory type.
>
> Signed-off-by: Wenyou Yang <[email-masked]>

Acked-by: Nicolas Ferre <[email-masked]>

But Russell, can we have your advice on this as you made us re-think 
about that during previous patch discussion?

Bye,

> ---
>   arch/arm/mach-at91/setup.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
> index a33d4b5..98d55ef 100644
> --- a/arch/arm/mach-at91/setup.c
> +++ b/arch/arm/mach-at91/setup.c
> @@ -84,7 +84,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
>
>   	desc->pfn = __phys_to_pfn(base);
>   	desc->length = length;
> -	desc->type = MT_DEVICE;
> +	desc->type = MT_MEMORY_NONCACHED;
>
>   	pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
>   		base, length, desc->virtual);
>

-- 
Nicolas Ferre