[U-Boot] [PATCH 2/3] env_mmc: allow negative CONFIG_ENV_OFFSET

[Tom Rini <trini@ti.com>]

On Tue, May 21, 2013 at 02:25:20PM -0600, Stephen Warren wrote:

> From: Stephen Warren <swarren@nvidia.com>
> 
> A negative value of CONFIG_ENV_OFFSET is treated as a backwards offset
> from the end of the eMMC device/partition, rather than a forwards offset
> from the start.
> 
> This is useful when a single board may be stuffed with different eMMC
> devices, each of which has a different capacity, and you always want the
> environment to be stored at the very end of the device (or eMMC boot
> partition for example).
> 
> One example of this case is NVIDIA's Ventana reference board.
> 
> Signed-off-by: Stephen Warren <swarren@nvidia.com>

NAK because you aren't also covering CONFIG_ENV_OFFSET_REDUND and you
need to update the README as it says ENV_OFFFSET is from the beginning
not end.

-- 
Tom
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