[U-Boot] [PATCH 1/3] board_f: Add mach specific DMA address check function.

[Kever Yang]

Hi Christoph,


On 05/07/2019 05:05 PM, Christoph Muellner wrote:
> From: Christoph Müllner <christoph.muellner at theobroma-systems.com>
>
> Some machines have limited DMA engines, which cannot deal
> with arbitrary addresses. This patch introduces a function
> to model these restrictions on a machine level.
>
> Signed-off-by: Christoph Müllner <christoph.muellner at theobroma-systems.com>
> Signed-off-by: Christoph Muellner <christoph.muellner at theobroma-systems.com>

Do you need all these two signed-off ?

Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>
>  common/board_f.c | 5 +++++
>  include/init.h   | 2 ++
>  2 files changed, 7 insertions(+)
>
> diff --git a/common/board_f.c b/common/board_f.c
> index 7ef20f2042..fed3c24373 100644
> --- a/common/board_f.c
> +++ b/common/board_f.c
> @@ -1053,3 +1053,8 @@ void board_init_f_r(void)
>  	hang();
>  }
>  #endif /* CONFIG_X86 */
> +
> +__weak int mach_addr_is_dmaable(unsigned long addr)
> +{
> +	return 1;
> +}
> diff --git a/include/init.h b/include/init.h
> index afc953d51e..18210a1489 100644
> --- a/include/init.h
> +++ b/include/init.h
> @@ -125,6 +125,8 @@ int misc_init_f(void);
>  int embedded_dtb_select(void);
>  #endif
>  
> +int mach_addr_is_dmaable(unsigned long addr);
> +
>  /* common/init/board_init.c */
>  extern ulong monitor_flash_len;
>