[PATCH v2 1/3] mx6sabresd: Fix U-Boot corruption after saving the environment

[Tom Rini]

On Fri, Feb 02, 2024 at 01:04:03PM -0300, Fabio Estevam wrote:

> From: Fabio Estevam <festevam at denx.de>
> 
> U-Boot binary has grown in such a way that it goes beyond the reserved
> area for the environment variables.
>     
> Running "saveenv" and rebooting the board causes U-Boot to hang because
> of this overlap.
>     
> Fix this problem by selecting CONFIG_LTO so that the U-Boot proper
> size can be reduced.
>     
> Also, to prevent this same problem to happen in the future, use
> CONFIG_BOARD_SIZE_LIMIT, which can detect the overlap in build-time.
>     
> CONFIG_BOARD_SIZE_LIMIT is calculated as follows:
> 
> CONFIG_BOARD_SIZE_LIMIT = CONFIG_ENV_OFFSET - u-boot-img.dtb offset
> CONFIG_BOARD_SIZE_LIMIT = 0xc000 - 69 * 1024
> CONFIG_BOARD_SIZE_LIMIT = 715766
> 
> Signed-off-by: Fabio Estevam <festevam at denx.de>

Thanks!

Reviewed-by: Tom Rini <trini at konsulko.com>

-- 
Tom
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