jffs in flash?

jffs in flash?

[Kári Davíðsson]

Hi,

I have one flash chip (4MB) that i want to use parts of as a disk, e.g.
with jffs or jffs2.
It seems to me that the jffs wants to use the whole chip under the fs.
Is this correct?
If not how can I tell jffs to start using the flash at some offset?

Thanks,

K.D.


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Re: jffs in flash?

[Xavier DEBREUIL]

correct me if I am wrong : in sa1100-flash.c, there are several examples where
a flash is divided into several partitions ;

for example : I have a 16Mbit flash and I have divided it into two partitions of
8Mbit each

static struct mtd_partition is_blue00_partitions[] = {
   { name : "boot partition",
    offset : 0,
    size : 0x00200000 },
   { name : "cramfs partition",
    offset : 0x00200000,
    size : 0x00200000 }
};



Kári Davíðsson wrote:
> 
> Hi,
> 
> I have one flash chip (4MB) that i want to use parts of as a disk, e.g.
> with jffs or jffs2.
> It seems to me that the jffs wants to use the whole chip under the fs.
> Is this correct?
> If not how can I tell jffs to start using the flash at some offset?
> 
> Thanks,
> 
> K.D.
> 
> To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org


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RE: jffs in flash?

[Kári Davíðsson]

Yes, I was pointed there yesterday, i.e. to the "map" drivers.
Wrote one and commited and now I am mounting my flash partitions all
over the place...... 8-)

Thanks,

K.D.
> -----Original Message-----
> From: Xavier DEBREUIL [mailto:xde@inventel.fr]
> Sent: 27. mars 2001 08:16
> To: Kári Davíðsson
> Cc: mtd@infradead.org
> Subject: Re: jffs in flash?
> 
> 
> correct me if I am wrong : in sa1100-flash.c, there are 
> several examples where
> a flash is divided into several partitions ;
> 
> for example : I have a 16Mbit flash and I have divided it 
> into two partitions of
> 8Mbit each
> 
> static struct mtd_partition is_blue00_partitions[] = {
>    { name : "boot partition",
>     offset : 0,
>     size : 0x00200000 },
>    { name : "cramfs partition",
>     offset : 0x00200000,
>     size : 0x00200000 }
> };
> 
> 
> 
> Kári Davíðsson wrote:
> > 
> > Hi,
> > 
> > I have one flash chip (4MB) that i want to use parts of as 
> a disk, e.g.
> > with jffs or jffs2.
> > It seems to me that the jffs wants to use the whole chip 
> under the fs.
> > Is this correct?
> > If not how can I tell jffs to start using the flash at some offset?
> > 
> > Thanks,
> > 
> > K.D.
> > 
> > To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org
> 


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Re: jffs in flash?

[David Woodhouse]

schirmer@taytron.net said:
>  Sorry i forgot to CC the mail to the list 8-) Some should change the
> list processor to make "reply to list" instead to the author the
> default. Its very helpfull for all the other people out there. 

No. Read http://www.unicom.com/pw/reply-to-harmful.html

--
dwmw2




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Re: jffs in flash?

[Florian Schirmer / TayTron]

Hi!


> Yes, I was pointed there yesterday, i.e. to the "map" drivers.
> Wrote one and commited and now I am mounting my flash partitions all
> over the place...... 8-)

Sorry i forgot to CC the mail to the list 8-) Some should change the list
processor to make "reply to list" instead to the author the default. Its
very helpfull for all the other people out there.

Thanks
   Florian Schirmer



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