[U-Boot] [PATCH] mx31pdk: Enable D and I caches

[Stefano Babic]

On 11/01/2011 07:16 PM, Fabio Estevam wrote:
> Enable D and I caches on mx31pdk.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---
> Stefano,
> 
> You explained that enabling cache may cause some drivers like FEC and MMC not to work properly.
> As mx31pdk does not have FEC or MMC driver I thought this should be OK.

Ok, understood.

> 
> Tested by booting Linux kernel via TFTP and mounting a NFS rootfs.

Good. To be sure, do you have also tested NAND in u-boot ? I do not
expect problems, but...

> 
>  board/freescale/mx31pdk/mx31pdk.c |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)
> 
> diff --git a/board/freescale/mx31pdk/mx31pdk.c b/board/freescale/mx31pdk/mx31pdk.c
> index 9f8bc53..1d7b4f6 100644
> --- a/board/freescale/mx31pdk/mx31pdk.c
> +++ b/board/freescale/mx31pdk/mx31pdk.c
> @@ -71,11 +71,19 @@ int board_early_init_f(void)
>  	return 0;
>  }
>  
> +void enable_caches(void)
> +{
> +	icache_enable();
> +	dcache_enable();
> +}
> +
>  int board_init(void)
>  {
>  	/* adress of boot parameters */
>  	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
>  
> +	enable_caches();
> +
>  	return 0;
>  }
>  

Acked-by: Stefano Babic <sbabic at denx.de>

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================