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Date: Sun, 05 Oct 2014 18:21:59 +0200
From: Richard Weinberger <richard@nod.at>
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To: Woody Wu <narkewoody@gmail.com>
Subject: Re: Block numbers of BEB
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Am 05.10.2014 18:17, schrieb Woody Wu:
> On October 5, 2014 11:00:25 PM GMT+07:00, Richard Weinberger <richard@nod.at> wrote:
>> Am 05.10.2014 17:58, schrieb Woody Wu:
>>> I am afraid, some initial bad blocks actually came with the Flash
>> manufacturer and recorded in some starting blocks of the Flash, is that
>> right?
>>
>> You mean the BBT, yes.
>> But what has this to do with exposing this map to userspace?
> 
> If I.know the location of the BBT, maybe I can read it out using a user space tool, right?

I'm not sure if this is what you want.
There are also bad block markers.
Please see http://wiki.openmoko.org/wiki/NAND_bad_blocks

Thanks,
//richard