From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] A problem about using the nand command
Date: Thu, 26 Apr 2012 14:26:22 -0500 [thread overview]
Message-ID: <4F99A15E.7010402@freescale.com> (raw)
In-Reply-To: <BLU166-W11B6488BC1C152299941C8C6240@phx.gbl>
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
prev parent reply other threads:[~2012-04-26 19:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 2:07 [U-Boot] A problem about using the nand command li guohu
2012-04-26 19:26 ` Scott Wood [this message]
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