Weird flash problem with saveenv

Wolfgang Denk wd at
Thu Aug 16 08:23:40 EST 2001

In message <3A494DE356A49A40B37442E1E0D9F3B5063420 at> you wrote:
> I have AM29LV640DU (128 uniform sectors 32kwords each) chips on my
> custom board. I have been able to do "saveenv" on all but one of my
> boards. I notice that the erase is not performed correctly and

Is that one of the flash chips that may power on in locked state  for
some  of  the sectors? [Don't have the manyal with me right now.] Did
you try writing a sector unlock sequence?

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at
The nice thing about standards is, there are so many to choose from.

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