[U-Boot-Users] Regarding memory commands

[S. Egbert]

Herekar, Aniruddha wrote:
> Does memory commands mm, mw, mn and tftp work only with RAM memory and
> not flash (nor or nand) memory?
> 
> If so are there any other commands other than 'cp' that can be used to
> write into flash (nor or nand) memory?
> 

Basic memory commands (mm. mw) work in any memory region that the
hardware supports.

You will have to be mindful of certain memory and interface devices
using only 16-bit or 8-bit access in a 32-bit architecture.  Otherwise,
such attempts to use 32-bit read/write will result in the most
significant short-word or byte NOT to carry valid data value.

TFTP does work writing directly into unprotected FLASH region if the
CFG_DIRECT_FLASH_TFTP is defined in your include/configs/<board>.h file.