[U-Boot] Can I load uEnv.txt conditionally, based on the boot source?

[Brian Smucker]

Hello,

That would be the most obvious thing, wouldn't it.  I thought of that, 
but am not sure of the answer in u-boot.

Thanks,
Brian

On 2/11/2015 12:09 AM, Joe Hershberger wrote:
>
> On Tue, Feb 10, 2015 at 7:18 PM, Brian Smucker <bds at bsmucker.eu.org 
> <mailto:bds at bsmucker.eu.org>> wrote:
> >
> > Hello,
> >
> > I was wondering if there is a way to tell what the boot source is?
> >
> > My am335x SOC can boot to the mmc or the flash, based on the status 
> of a digital line. I would like to load the uEnv.txt, only if booting 
> from SD card (mmc).  I notice at least in some codebases that the 
> automatic loading of uEnv.txt is based on whether the SD card is 
> available, not whether we are currently booting from the SD card.
> >
> > Is there a way to sense which we are booting from?
>
> Are you able to read the same digital line that the SoC is using to 
> decide?