[U-Boot-Users] why the "rm der" instructions before and after erase flash?

Robert P. J. Day rpjday at mindspring.com
Thu Mar 17 20:08:59 CET 2005

  i was just about to take my first shot at building and flashing
u-boot-1.1.2 to an RPXlite_DW board (well, not *exactly* that board
but close enough to at least get u-boot up and running).

  i'm using an abatron BDI2000, and have *lots* of experience flashing
a planet core loader to (in our case) 0xfc000000, the low flash

  the only thing i'm unsure of in the instructions are the two

  rm der 0x2006000f
  ... erase and flash ...
  rm der 0x2002000f

assuming this means modify debug enable register, what does the above
represent?  i've flashed the PC loader a zillion times without ever
having to modify this register.  is this something i'd only need with



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