[ECOS] Re : [ECOS] enable 8/16 bit flash in eCos

[ECOS] Re : [ECOS] enable 8/16 bit flash in eCos

[ayoub zaki]

hello,

No I have only one flash, but I have 2 different board one with Intel J3 (8bit) and other board with intel P30 (16bit), but my purpose is to use only one version of redboot (one binary) for both.


Regards,


zak
----- Message d'origine ----
De : Andrew Lunn <andrew@lunn.ch>
À : ayoub zaki <ayoub_zaki@yahoo.fr>
Cc : ecos-discuss@sourceware.org
Envoyé le : Mercredi, 20 Décembre 2006, 15h50mn 17s
Objet : Re: [ECOS] enable 8/16 bit flash in eCos

On Wed, Dec 20, 2006 at 02:39:01PM +0000, ayoub zaki wrote:
> 
> Hello all,
> 
> Is it possible to enable simultanously 8/16 bit flash width in eCos ?

Does this mean you have two different flash devices in the system?

If so you probably need to use the flash_v2 branch in the eCos CVS
repository.

        Andrew

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss






	

	
		
___________________________________________________________________________ 
Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! 
Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses 
http://fr.answers.yahoo.com

--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

[ECOS] Re: Re : [ECOS] enable 8/16 bit flash in eCos

[Andrew Lunn]

On Thu, Dec 21, 2006 at 08:18:47AM +0000, ayoub zaki wrote:
> hello,
> 

> No I have only one flash, but I have 2 different board one with
> Intel J3 (8bit) and other board with intel P30 (16bit), but my
> purpose is to use only one version of redboot (one binary) for
> both.

That boils down to the same problem. You need two different device
drivers in your binary at the same time, of which only one will be
used. The flash_v2 branch supports this. When the driver starts it
will probe the hardware to see if the device it is supposed to driver
exists. If not it does nothing, leaving the memory space free for the
second driver to control, if it probes successfully.

       Andrew

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss