[PATCH 1/4] bsp/leon3: Invalidate L1 caches during startup

[Daniel Hellstrom]

Hello,

Is this needed for CPU0 also? Otherwise I think it would be enough to invalidate the caches when the other cache parameters to save one instruction, they are modified in leon3_secondary_cpu_initialize():

- sparc_leon3_set_cctrl( 0x80000F );
+ sparc_leon3_set_cctrl( 0xE0000F );

Regards,
Daniel


On 02/18/2014 12:53 PM, Sebastian Huber wrote:
> ---
>   c/src/lib/libbsp/sparc/shared/start/start.S |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/c/src/lib/libbsp/sparc/shared/start/start.S b/c/src/lib/libbsp/sparc/shared/start/start.S
> index df17a9b..d0eb512 100644
> --- a/c/src/lib/libbsp/sparc/shared/start/start.S
> +++ b/c/src/lib/libbsp/sparc/shared/start/start.S
> @@ -223,6 +223,8 @@ SYM(hard_reset):
>           nop
>   
>   #if defined(START_LEON3_ENABLE_SMP)
> +	flush				! invalidate L1 caches of this CPU
> +
>   	rd	%asr17, %o0		! get CPU identifier
>   	srl	%o0, LEON3_ASR17_PROCESSOR_INDEX_SHIFT, %o0
>