Is it possible to have a command prompt while flashing?

[sujay1]

I'm using imx6sllevk with Yocto bsp and once booting is completed i get a login prompt.

imx6sllevk login# root

I would like to get this command prompt when it is in flash mode that is after loading the u-boot zImage and dtb.

What changes do I need to make in the ucl2.xml file to give a login prompt?

Also I'm flashing to emmc and please note using sd car for flashing is not an option.

[b36401]

When you perform flashing the image the board is running a Linux with reduced options.
And it is not designed for command prompt.
However you can try to add "bash" to the end of list of the command in ucl2.xml file (instead of umounting rootfs, etc).
Then mfg-tool will starn this bash listening to UART and you can close the programm and attach a terminal to this UART.