* About MTD.
@ 2003-06-11 12:45 Christophe.LINDHEIMER
2003-06-11 15:29 ` Chris Zimman
0 siblings, 1 reply; 2+ messages in thread
From: Christophe.LINDHEIMER @ 2003-06-11 12:45 UTC (permalink / raw)
To: linuxppc-embedded; +Cc: jjboor
Hi.
I am trying to use MTD on my board.
I have two flash AMD LV160BB that are configured in 16 bits.
They are in parallel so I have got a 32 bits bus wide.
Each flash is 2 Mo . So the total is 4 Mo.
My flash starts at @ : 0x04000000.
So in the configuration for Linux I set
CFI : yes
Start @ : 0x04000000
Size : 0x00400000
Bus Width : 4
The result at the boot is :
physmap flash device: 400000 at 4000000
Amd/Fujitsu Extended Query Table v1.0 at 0x0040
number of JEDEC chips: 1
0: offset=0x0,size=0x8000,blocks=1
1: offset=0x8000,size=0x4000,blocks=2
2: offset=0x10000,size=0x10000,blocks=1
3: offset=0x20000,size=0x20000,blocks=31
mtd: Giving out device 0 to Physically mapped flash
Is it correct ?
Why is there only one JEDEC Chip detected ?
Regards
Chris
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: About MTD.
2003-06-11 12:45 About MTD Christophe.LINDHEIMER
@ 2003-06-11 15:29 ` Chris Zimman
0 siblings, 0 replies; 2+ messages in thread
From: Chris Zimman @ 2003-06-11 15:29 UTC (permalink / raw)
To: Christophe.LINDHEIMER; +Cc: linuxppc-embedded, jjboor
On Wed, Jun 11, 2003 at 02:45:37PM +0200, Christophe.LINDHEIMER@fr.thalesgroup.com wrote:
>
> I am trying to use MTD on my board.
>
> I have two flash AMD LV160BB that are configured in 16 bits.
>
> They are in parallel so I have got a 32 bits bus wide.
>
> Each flash is 2 Mo . So the total is 4 Mo.
>
> My flash starts at @ : 0x04000000.
>
> So in the configuration for Linux I set
> CFI : yes
> Start @ : 0x04000000
> Size : 0x00400000
> Bus Width : 4
>
> The result at the boot is :
>
> physmap flash device: 400000 at 4000000
> Amd/Fujitsu Extended Query Table v1.0 at 0x0040
> number of JEDEC chips: 1
> 0: offset=0x0,size=0x8000,blocks=1
> 1: offset=0x8000,size=0x4000,blocks=2
> 2: offset=0x10000,size=0x10000,blocks=1
> 3: offset=0x20000,size=0x20000,blocks=31
> mtd: Giving out device 0 to Physically mapped flash
Can you send along the snippet of code from your config?
> Is it correct ?
> Why is there only one JEDEC Chip detected ?
I'm guessing that the two flash parts are only using 1 chip select for
both. If that's the case, it would make sense to me.
--Chris
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
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