In message 8bf247760607092332x2a59535cj6711590d3c95f3a5@mail.gmail.com you wrote:
I understand from you that we can download an image onto some location and execute that image.
You can either boot an OS (or some other application), where "boot" means that the only way back into U-Boot is through a systemn reset; or you can load and start a "standalone application", which returns to U-Boot after execution.
can that image (or executable) is using the serial/ethernet? and act
Yes, it can (depending on the exported U-Boot functions). See the docs.
as a iterative server.
Define "iterative server"!
and once the end of all commands is sent will the u-boot get the control?.
In case of a stndalone application: yes (unless you crash the system).
Best regards,
Wolfgang Denk