26 Apr
2012
26 Apr
'12
9:26 p.m.
On 04/25/2012 09:07 PM, li guohu wrote:
Hello, everyone! I find a strange problem when I use the u-boot command. I list the command I used in the u-boot command line as follows.
nand erase nand read 0x2000000 0x0 0x800 md 0x2000000
I should see 2K bytes of "0xFF" because I have erase the whole nand flash device.
What version of U-Boot are you using?
With modern U-Boot you need "nand erase.chip". Please try with current U-Boot.
Actually, I find a "0xFD" in one address. Then I try display some other contend of the nand flash. I can also find one "0xFD" in every 2K address space. It is so strange.
What board/driver?
What do you see if you list the bad blocks?
-Scott