[U-Boot-Users] [PATCH] 85xx: Add setting of cache props in the device tree.

[Andy Fleming]

On Thu, May 29, 2008 at 11:22 AM, Kumar Gala <galak at kernel.crashing.org> wrote:
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
> ---
>  cpu/mpc85xx/fdt.c |  128 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 128 insertions(+), 0 deletions(-)
>
> diff --git a/cpu/mpc85xx/fdt.c b/cpu/mpc85xx/fdt.c
> index bb87740..92952e6 100644
> --- a/cpu/mpc85xx/fdt.c
> +++ b/cpu/mpc85xx/fdt.c
> @@ -26,6 +26,7 @@
>  #include <common.h>
>  #include <libfdt.h>
>  #include <fdt_support.h>
> +#include <asm/processor.h>
>
>  extern void ft_qe_setup(void *blob);
>  #ifdef CONFIG_MP
> @@ -77,6 +78,131 @@ void ft_fixup_cpu(void *blob, u64 memory_limit)
>  }
>  #endif
>
> +#ifdef CONFIG_L2_CACHE
> +/* return size in kilobytes */
> +static inline u32 l2cache_size(void)
> +{
> +       volatile ccsr_l2cache_t *l2cache = (void *)CFG_MPC85xx_L2_ADDR;
> +       volatile u32 l2siz_field = (l2cache->l2ctl >> 28) & 0x3;
> +       u32 ver = SVR_SOC_VER(get_svr());
> +
> +       switch (l2siz_field) {
> +       case 0x0:
> +               break;
> +       case 0x1:
> +               if (ver == SVR_8540 || ver == SVR_8560   ||
> +                   ver == SVR_8541 || ver == SVR_8541_E ||
> +                   ver == SVR_8555 || ver == SVR_8555_E)
> +                       return 128;
> +               else
> +                       return 256;
> +               break;
> +       case 0x2:
> +               if (ver == SVR_8540 || ver == SVR_8560   ||
> +                   ver == SVR_8541 || ver == SVR_8541_E ||
> +                   ver == SVR_8555 || ver == SVR_8555_E)
> +                       return 256;
> +               else
> +                       return 512;
> +               break;
> +       case 0x3:
> +               return 1024;
> +               break;
> +       }
> +
> +       return 0;
> +}

How about we create a feature in the new cpu_type field you created,
and use that to flag it.  :)

Andy