[U-Boot] [PATCH] arc/cache: really do flush_dcache_all() even if IOC exists

[Alexey Brodkin]

Hi,

On Mon, 2016-04-18 at 13:28 +0300, Alexey Brodkin wrote:
> flush_dcache_all() is used in the very end of U-Boot self relocation
> to write back all copied and then patched code and data to their
> new location in the very end of available memory space.
> 
> Since that has nothing to do with IO (i.e. no external DMA happens
> here) IOC won't help here and we need to write back data cache contents
> manually.
> 
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> ---
>  arch/arc/lib/cache.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c
> index 56988dd..d1fb661 100644
> --- a/arch/arc/lib/cache.c
> +++ b/arch/arc/lib/cache.c
> @@ -430,13 +430,10 @@ void invalidate_dcache_all(void)
>  
>  void flush_dcache_all(void)
>  {
> -#ifdef CONFIG_ISA_ARCV2
> -	if (!ioc_exists)
> -#endif
> -		__dc_entire_op(OP_FLUSH);
> +	__dc_entire_op(OP_FLUSH);
>  
>  #ifdef CONFIG_ISA_ARCV2
> -	if (slc_exists && !ioc_exists)
> +	if (slc_exists)
>  		__slc_entire_op(OP_FLUSH);
>  #endif
>  }

Applied, thanks!

-Alexey