about uboot

write uboot to norflash:

u-boot=> cp.b 20000000 10000000 ffff
Copy to Flash... Flash not Erased

norflash:28F128J3A SDRAM:HY57V281620FTP
How to solve this problem?

Re: about uboot

Hi Ivyy415,

as I am using NAND FLASH, I can only take a guess: Probably you will have to use the erase command first. This will result in the memory bytes being reset to "FF", so they can be rewritten.

Nick

Re: about uboot

Yes, the erase command is required if the flash region already contains data.

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