[U-Boot] env_mmc: support overriding mmc dev from board code

[Tom Rini]

On Tue, Jan 26, 2016 at 09:42:38AM +0800, Peng Fan wrote:
> On Mon, Jan 25, 2016 at 04:28:55PM -0500, Tom Rini wrote:
> >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 at konsulko.com>
> >> Cc: Stephen Warren <swarren at nvidia.com>
> >> Cc: Tim Harvey <tharvey at gateworks.com>
> >> Cc: Simon Glass <sjg at chromium.org>
> >> Cc: Hans de Goede <hdegoede at redhat.com>
> >> 
> >> Signed-off-by: Clemens Gruber <clemens.gruber at pqgruber.com>
> >> Reviewed-by: Stephen Warren <swarren at nvidia.com>
> >> Reviewed-by: Tom Rini <trini at konsulko.com>
> >
> >Applied to u-boot/master, thanks!
> 
> Oh. I missed this patch. I have a more complete patch, still in patch work.
> https://patchwork.ozlabs.org/patch/558056/.

Bah.  They look to cover the same areas to me at least.

-- 
Tom
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