Hello, u-boot world!

I have wrote u-boot (U-Boot 2009.01-rc1 ) into my smdk2410 board.

But when i issued protect off all and then setenv command , i got error as following:

SMDK2410 # saveenv Saving Environment to Flash... Un-Protected 1 sectors Erasing Flash...Erasing sector 10 ... ok. Erased 1 sectors Writing to Flash... General Flash Programming Error Protected 1 sectors

Why could it be this? How to fix it? Another question, how to get one variable's Location in flash with its name?

Thanks in advance!

Jerry.Zhang