[U-Boot] [PATCH v4 1/2] env_mmc: configure environment offsets via device tree

[Jaehoon Chung]

Hi Philipp,

On 05/16/2017 07:16 AM, Philipp Tomsich wrote:
> This introduces the ability to override the environment offets from the
> device tree by setting the following nodes in '/config':
> 	'u-boot,mmc-env-offset' - overrides CONFIG_ENV_OFFSET
> 	'u-boot,mmc-env-offset-redundant'
> 				- overrides CONFIG_ENV_OFFSET_REDUND
> 
> To keep with the previous logic, the CONFIG_* defines still need to
> be available and the statically defined values become the defaults,
> when the corresponding properties are not set in the device-tree.
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Acked-by: Simon Glass <sjg at chromium.org>

I'm doing check this patches..after building,,if there is no problem, i will pick.

Thanks!

Best Regards,
Jaehoon Chung

> ---
> 
> Changes in v4:
> - change the test for OF_CONTROL to use CONFIG_IS_ENABLED to pick up
>   the differece between SPL_OF_CONTROL and OF_CONTROL
> 
> Changes in v3:
> - changes the config-check to depend on CONFIG_OF_CONTROL to detect
>   if 'fdtdec_get_config_int' is available
> 
> Changes in v2: None
> 
>  common/env_mmc.c | 31 +++++++++++++++++++++++++++----
>  1 file changed, 27 insertions(+), 4 deletions(-)
> 
> diff --git a/common/env_mmc.c b/common/env_mmc.c
> index a5d14d4..45d95a1 100644
> --- a/common/env_mmc.c
> +++ b/common/env_mmc.c
> @@ -10,6 +10,7 @@
>  
>  #include <command.h>
>  #include <environment.h>
> +#include <fdtdec.h>
>  #include <linux/stddef.h>
>  #include <malloc.h>
>  #include <memalign.h>
> @@ -36,15 +37,37 @@ DECLARE_GLOBAL_DATA_PTR;
>  #define CONFIG_ENV_OFFSET 0
>  #endif
>  
> -__weak int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr)
> +#if CONFIG_IS_ENABLED(OF_CONTROL)
> +static inline s64 mmc_offset(int copy)
>  {
> -	s64 offset;
> +	const char *propname = "u-boot,mmc-env-offset";
> +	s64 defvalue = CONFIG_ENV_OFFSET;
>  
> -	offset = CONFIG_ENV_OFFSET;
> -#ifdef CONFIG_ENV_OFFSET_REDUND
> +#if defined(CONFIG_ENV_OFFSET_REDUND)
> +	if (copy) {
> +		propname = "u-boot,mmc-env-offset-redundant";
> +		defvalue = CONFIG_ENV_OFFSET_REDUND;
> +	}
> +#endif
> +
> +	return fdtdec_get_config_int(gd->fdt_blob, propname, defvalue);
> +}
> +#else
> +static inline s64 mmc_offset(int copy)
> +{
> +	s64 offset = CONFIG_ENV_OFFSET;
> +
> +#if defined(CONFIG_ENV_OFFSET_REDUND)
>  	if (copy)
>  		offset = CONFIG_ENV_OFFSET_REDUND;
>  #endif
> +	return offset;
> +}
> +#endif
> +
> +__weak int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr)
> +{
> +	s64 offset = mmc_offset(copy);
>  
>  	if (offset < 0)
>  		offset += mmc->capacity;
>