[ECOS] flash filesystem and Read/Write access

Gary D. Thomas gary.thomas@mind.be
Fri Apr 4 23:00:00 GMT 2003

On Fri, 2003-04-04 at 16:46, Zi Zhou wrote:
> Hi,
> I want to use redboot to load my application from flash and at run time,
> my application should be able to save configuration data back to flash. I
> am trying to find out if I can( or should) use JFFS2 or FIS for this
> purpose.  I have read through the mailing list,   here is my understanding
> and I hope someone can give me some suggestions.
> 1. Current Redboot doesn't have command to access JFFS2 filesystem. I saw
> some discussion about implementing this in the mailing list, I am
> wondering if someone is working on it and what the schedule would be like.

It has been discussed.  I don't know of anyone actively working on it.

> 2. I can use Redboot FIS to save application image back and forth from
> flash. Is it possible for ecos application to access( Read/Write) Redboot
> FIS at run time, will it involve a lot of work ? Can some one give me info
> about how much changes have to be made and where the major changes should
> be?
> 3. Can I partition my flash memory into 2 parts, say one is FIS that
> redboot can recognize so that I can store eCos application there, the
> other is JFFS2 filesystem for eCos application to access at run time --
> for the purpose of saving and retriving configuration data files?

This is a reasonable choice and the one that has been used so far.

|       Mind: Embedded Linux and eCos Development        |
| Gary Thomas              email:  gary.thomas@mind.be   |
| Mind ( http://mind.be )  tel:    +1 (970) 229-1963     |
| gpg: http://www.chez-thomas.org/gary/gpg_key.asc       |

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