[U-Boot] howto write uboot to nand

[Scott Wood <scottwood@freescale.com>]

On 06/28/2013 03:15:03 PM, kqt4at5v at gmail.com wrote:
> I thought I should ask before I screw this up. I have a new uboot  
> that I load with kwboot. It works fine and I want to write it to  
> nand. I see many references to write it after loading with tftp but  
> not kwboot. Can I do this? How? This is to a Guruplug. Using tftp
> 
> tftp 0x6400000 u-boot.kwb
> nand erase 0x00000000 0x0100000
> nand write 0x6400000 0x0000000 0x80000

I'm not familiar with guruplug or kwboot (if you want an answer from  
someone who is, you should put it in the subject line) -- but assuming  
the image is supposed to be written to the beginning of NAND, the  
commands look good.

I'm curious why you erase 1 MiB but only write 512 KiB, though.  Even  
if your erase block size really is that large, the "nand erase" command  
will round up (so you can use $filesize if you want).

-Scott