[U-Boot] [PATCH v5] pico-imx7d: Increase the CONFIG_ENV_OFFSET size

[Stefano Babic]

Hi Fabio,

On 08/12/18 14:53, Fabio Estevam wrote:
> U-Boot binary has grown in such a way that it goes beyond the reserved
> area for the environment variables.
> 
> Running "saveenv" causes U-Boot to hang because of this overlap.
> 
> Fix this problem by increasing the CONFIG_ENV_OFFSET size.
> 
> Also, in order to prevent this same problem to happen again in
> the future, use CONFIG_BOARD_SIZE_LIMIT, which will detect the overlap
> in build-time.
> 
> CONFIG_BOARD_SIZE_LIMIT is CONFIG_ENV_OFFSET - 69 kB, as u-boot.img
> is flashed into the 69 kB offset.
> 
> Signed-off-by: Fabio Estevam <festevam at gmail.com>
> ---
> Changes since v4:
> - Use math expressions for better readability
> 
> Hi Stefano,
> 
> This one depends on Wolfgang's v2 patch:
> https://lists.denx.de/pipermail/u-boot/2018-December/351138.html
> 

Yes, I see the long  thread with Wolfgang. IMHO it is better I apply
both of them to u-boot.imx, even if Wolfgang's is quite "shared" (he
patches /Makefile, too).

Regards,
Stefano

>  include/configs/pico-imx7d.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/include/configs/pico-imx7d.h b/include/configs/pico-imx7d.h
> index 2bc42a0..333c0b4 100644
> --- a/include/configs/pico-imx7d.h
> +++ b/include/configs/pico-imx7d.h
> @@ -134,7 +134,8 @@
>  /* FLASH and environment organization */
>  #define CONFIG_ENV_SIZE			SZ_8K
>  
> -#define CONFIG_ENV_OFFSET			(8 * SZ_64K)
> +#define CONFIG_ENV_OFFSET			(768 * 1024)
> +#define CONFIG_BOARD_SIZE_LIMIT			((768 - 69) * 1024)
>  #define CONFIG_SYS_FSL_USDHC_NUM		2
>  
>  #define CONFIG_SYS_MMC_ENV_DEV			0
> 

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