[U-Boot-Users] skipping bad blocks when erasing nand

[Dave Hylands]

Hi,

Replying to the whole list this time around....

> It should at least be reported to the user - otherwise he assumes  to
> have an error-free medium.

Hard-drives have bad blocks, but you don't see them being reported
when you format.

Somebody who knows that NAND chips have bad blocks as a normal course
of events won't be suprised to see them. People (i.e. end users - not
the programmers) who are unaware that NAND chips can have bad blocks
will be suprised, so the whole thing about bad blocks being normal now
has to be documented.

I think that if a block is marked as bad, then doing an erase should
just ignore blocks that already marked bad. However, if a block goes
bad as a result of the formatting, then that's worth reporting
(although, this is also a fact of life).

I think having a command to list the bad blocks would be useful.

-- 
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/