[U-Boot] u-boot serial console.

Hello,

I kindly want to inquire about the following:

- The serial console for UART host based debugging is initialized and prepared by u-boot, is it necessary for the kernel (or any other baremetal code) to reinitialize the UART? what minimum code needs to be added to the software layer (that u-boot gives control to) so that this layer can use the UART debug functionality?

Regards,

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