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Date: Wed, 26 Mar 2014 12:33:01 +0100
From: Alexander Aring <alex.aring@gmail.com>
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Subject: Re: Can i access the barebox env from linux
To: Ashutosh Singh <embedded.ashu@gmail.com>
Cc: barebox@lists.infradead.org

On Wed, Mar 26, 2014 at 12:31:03PM +0100, Alexander Aring wrote:
> On Wed, Mar 26, 2014 at 04:44:30PM +0530, Ashutosh Singh wrote:
> > Thanks Alex,
> > 
> > The script is quite helpful.
> > But since i am saving my barebox.env in nand and want to mount, modify
> > and write it back to nand.
> > Do you have a safer solution so that complete env data won't corrupted.
> 
> 1. You need to save the bareboxenv as image, the right place would be
>    /tmp which is tmpfs and this uses ram for storing data. You need inotify
>    support in kernel and I am sure tmpfs also supports inotify. You also need
>    the inotify userspace utilities.
> 
> 2. The image should write via nandwrite from mtd-utils [1]. Look for
>    the nandwrite manpage. nandwrite should write the tmp-image from bbenv
>    to your nand mtd device.
> 

3. To read the image from bbenv partition you should also not use
   bareboxenv tool directly. Use nanddump for that and then use
   bareboxenv to extract these files to /tmp/bbenv or whatever.

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