[U-Boot] [PATCH v2] ARM: at91: at91sam9n12ek: save the environment to a fat file in MMC card

[Bo Shen <voice.shen@atmel.com>]

Hi Josh,

On 03/24/2015 05:07 PM, Josh Wu wrote:
> Insteading in mmc's raw sectors, this patch will save the environment
> in a fat file (uboot.env) in mmc card's first FAT patition by default.
>
> If you want to save in mmc's raw sectors, you only need to define
> CONFIG_ENV_IS_IN_MMC.
>
> Signed-off-by: Josh Wu <josh.wu@atmel.com>

Thanks for your patch. I think this one is better than v1.

Acked-by: Bo Shen <voice.shen@atmel.com>

> ---
>
> Changes in v2:
> - not remove the code to save env in mmc's raw sectors.
> - we can define CONFIG_ENV_IS_IN_MMC to enable raw sectors saving.
>
>   include/configs/at91sam9n12ek.h | 15 +++++++++++++--
>   1 file changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
> index f02fce9..058e0e4 100644
> --- a/include/configs/at91sam9n12ek.h
> +++ b/include/configs/at91sam9n12ek.h
> @@ -201,11 +201,22 @@
>   #else /* CONFIG_SYS_USE_MMC */
>
>   /* bootstrap + u-boot + env + linux in mmc */
> -#define CONFIG_ENV_IS_IN_MMC
> -/* For FAT system, most cases it should be in the reserved sector */
> +
> +#ifdef CONFIG_ENV_IS_IN_MMC
> +/* Use raw reserved sectors to save environment */
>   #define CONFIG_ENV_OFFSET		0x2000
>   #define CONFIG_ENV_SIZE			0x1000
>   #define CONFIG_SYS_MMC_ENV_DEV		0
> +#else
> +/* Use file in FAT file to save environment */
> +#define CONFIG_ENV_IS_IN_FAT
> +#define CONFIG_FAT_WRITE
> +#define FAT_ENV_INTERFACE		"mmc"
> +#define FAT_ENV_FILE			"uboot.env"
> +#define FAT_ENV_DEVICE_AND_PART		"0"
> +#define CONFIG_ENV_SIZE			0x4000
> +#endif
> +
>   #define CONFIG_BOOTCOMMAND						\
>   	"setenv bootargs ${console} ${mtdparts} ${bootargs_mmc};"	\
>   	"fatload mmc 0:1 0x21000000 dtb;"				\
>

Best Regards,
Bo Shen