+config ENV_SECT_SIZE_AUTO
+ bool "Use automatically detected sector size"
+ depends on ENV_IS_IN_SPI_FLASH
+ help
+ Some boards exist in multiple variants, with different
+ flashes having different sector sizes. In such cases, you
+ can select this option to make U-Boot use the actual sector
+ size when figuring out how much to erase, which can thus be
+ more efficient on the flashes with smaller erase size. Since
+ the environment must always be aligned on a sector boundary,
+ CONFIG_ENV_OFFSET must be aligned to the largest of the
+ different sector sizes, and CONFIG_ENV_SECT_SIZE should be
+ set to that value.
+