From mboxrd@z Thu Jan  1 00:00:00 1970
From: Amit Tomar <atomar25opensource@gmail.com>
Date: Fri, 22 Jan 2021 18:53:10 +0530
Subject: Loading u-boot binary from the u-boot command line
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>
> Can I load the modified u-boot binary from the currently running u-boot
> command line?
>

Yes, U-boot supports chain loading.

On host machine you can use ckermit[1] program to load U-boot image using
serial or you can
use tftp to load modified U-boot image at SYS_TEXT_BASE address.
Once the image is loaded , you can bootm "SYS_TEXT_BASE".

Thanks
-Amit

[1]: http://blog.mezeske.com/?p=483