On Wed, Jan 20, 2016 at 03:43:37PM +0100, Clemens Gruber wrote:
This enables boards to choose where to/from the environment should be saved/loaded. They can then for example support using the same device (dynamically) from which the bootloader was launched to load and save env data and do not have to define CONFIG_SYS_MMC_ENV_DEV statically.
In my use case, the environment needs to be on the same device I booted from. It can be the eMMC or an optional SD card. I therefore would override mmc_get_env_dev in the board code, read the CPU registers to determine where we booted from and return the corresponding device index.
Cc: Tom Rini trini@konsulko.com Cc: Stephen Warren swarren@nvidia.com Cc: Tim Harvey tharvey@gateworks.com Cc: Simon Glass sjg@chromium.org Cc: Hans de Goede hdegoede@redhat.com
Signed-off-by: Clemens Gruber clemens.gruber@pqgruber.com
Reviewed-by: Tom Rini trini@konsulko.com