[U-Boot] [PATCH] arm: am57xx: Keep environment in eMMC

[Tom Rini]

On Fri, Jun 09, 2017 at 05:12:56PM +0300, Sam Protsenko wrote:

> Use eMMC (instead of SD card) to store U-Boot environment. Use
> "reserved" partition for U-Boot environment.
> 
> Signed-off-by: Sam Protsenko <semen.protsenko at linaro.org>
> ---
>  include/configs/am57xx_evm.h | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/include/configs/am57xx_evm.h b/include/configs/am57xx_evm.h
> index af19098727..7a42d79647 100644
> --- a/include/configs/am57xx_evm.h
> +++ b/include/configs/am57xx_evm.h
> @@ -13,6 +13,7 @@
>  #define __CONFIG_AM57XX_EVM_H
>  
>  #include <environment/ti/dfu.h>
> +#include <linux/sizes.h>
>  
>  #ifdef CONFIG_SPL_BUILD
>  #define CONFIG_IODELAY_RECALIBRATION
> @@ -20,11 +21,14 @@
>  
>  #define CONFIG_NR_DRAM_BANKS		2
>  
> -#define CONFIG_ENV_SIZE			(64 << 10)
> -#define CONFIG_ENV_IS_IN_FAT
> -#define FAT_ENV_INTERFACE		"mmc"
> -#define FAT_ENV_DEVICE_AND_PART		"0:1"
> -#define FAT_ENV_FILE			"uboot.env"
> +/* MMC ENV related defines */
> +#define CONFIG_ENV_IS_IN_MMC
> +#define CONFIG_SYS_MMC_ENV_DEV		1		/* eMMC */
> +#define CONFIG_SYS_MMC_ENV_PART		0
> +#define CONFIG_ENV_SIZE			SZ_128K
> +#define CONFIG_ENV_OFFSET		0x260000
> +#define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
> +#define CONFIG_SYS_REDUNDAND_ENVIRONMENT

Why are we doing this?

-- 
Tom
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