Broken boot loader

[Tango Drango]

I was trying to distro-hop without an eMMC adapter (there's one in the mail but I got impatient) but my SD card wasn't being recognized. Being the clown that I am I thought it was an issue with uboot booting from eMMC before the SD card even though I know this not to be the default boot order. Being an even bigger fool (and in my defense after about an hour of troubleshooting and a long day of work) I decided to break rule 1 of computing and blindly copied a command I found online thinking it would solve my issue.

I then ran the following command in u-boot:  

Code:

setenv bootcmd 'run sdboot' ; saveenv ; reboot

The issue I'm now running into is that the bootloader on my SPI is borked and I don't know what the default bootcmd environment variable is. I know literally nothing about bootloader syntax and can't even read the output of 'help' as it scrolls by too quickly (is there not a 'less' equivalent for the boot loader cli?). 
You could say I'm a bit out of my element!

Is there a way to reset my u-boot and/or does anyone know what the default bootcmd environment variable is?
Alternately, how do I boot using the u-boot cli? My eMMC is still visible using the the mmc command, but I don't know how to access it or boot from it.
Thanks in advance.


SOLUTION:

does anyone know what the default bootcmd environment variable is?

You can always restore default environment with:

Code:

env default -a

Note that it restores settings for current "session", to persist do:

Code:

env save

For more details see:
https://u-boot.readthedocs.io/en/latest/...d/env.html