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* How to use EP8260 MTD device?
@ 2003-01-30 13:41 OHMURA Yutaka
  2003-01-31 13:40 ` OHMURA Yutaka
  0 siblings, 1 reply; 9+ messages in thread
From: OHMURA Yutaka @ 2003-01-30 13:41 UTC (permalink / raw)
  To: linuxppc-embedded


Hello,

Now I'm trying to use Embedded Planet 8260 board Flash memory with TimeSys
Linux 3.1(TSL). I have two type of this board. One has 200MHz clock, have RTC,
64MB PSDRAM, 32MB LSDRAM and 16MB Flash ROM. The other has 300MHz clock,
no RTC, 32MB PSDRAM and 8MB Flash ROM. My goal is use MTD device under TSL with
300MHz MPU board, but the board looks some other difference with 200MHz board,
so TSL can't works fine, so at first I'm trying to use MTD device with 200MHz
board. But I can't use MTD until now.
In now situation, /dev/mtd and /dev/mtdblock are normal directory and there are
nothing under the directory.

Please tell me how to use MTD on EP8260 under TSL!

Here is my .config
> # Memory Technology Devices (MTD)
> CONFIG_MTD=y
> CONFIG_MTD_DEBUG=y
> CONFIG_MTD_DEBUG_VERBOSE=3
> CONFIG_MTD_PARTITIONS=y
> CONFIG_MTD_CHAR=y
> CONFIG_MTD_BLOCK=y
> CONFIG_FTL=y

> # RAM/ROM/Flash chip drivers
> CONFIG_MTD_CFI=y
> CONFIG_MTD_JEDECPROBE=y
> CONFIG_MTD_GEN_PROBE=y
> CONFIG_MTD_CFI_AMDSTD=y	<-On board Flash memory looks AMD
				  chip but the print faint so I
				  can't read chip type
> CONFIG_MTD_CFI_AMDSTD=y
> CONFIG_MTD_OBSOLETE_CHIPS=y
> CONFIG_MTD_AMDSTD=y

> # Mapping drivers for chip access
> CONFIG_MTD_PHYSMAP=y
> CONFIG_MTD_PHYSMAP_START=FF800000	<-adjusting to 300MHz board
> CONFIG_MTD_PHYSMAP_LEN=70000000	  I hope 200MHz board can work with
					  this parameter
> CONFIG_MTD_PHYSMAP_BUSWIDTH=2
other MTD parameters are not set

Under this environment, MTD driver says
> physmap flash device: 6ffffc at ff800000
> CFI: Found no Physically mapped flash device at location zero
> RPX Lite or CLLF flash device: 2000000 at fe000000
> CFI: Found no RPX device at location zero
> $Id: ftl.c,v 1.38 2001/09/23 21:15:12 dwmw2 Exp $

This is first time to use MTD for me, so if you know good reference to use it,
please tell me too.
/usr/src/timesys/ep8260/2.4.7-timesys-3.1.180/kernel/Documents was not help me.

Regards,

Yutaka

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

^ permalink raw reply	[flat|nested] 9+ messages in thread
* RE: How to use EP8260 MTD device?
@ 2003-02-03 14:19 Steven Blakeslee
  2003-02-06  5:58 ` OHMURA Yutaka
  0 siblings, 1 reply; 9+ messages in thread
From: Steven Blakeslee @ 2003-02-03 14:19 UTC (permalink / raw)
  To: 'OHMURA Yutaka', linuxppc-embedded


It looks like you are using the MTD with the onboard FLASH.  I noticed you
have "CONFIG_MTD_PHYSMAP_BUSWIDTH=2", the FLASH on the ep8260 is a 64bit
bus, wouldn't that mean this should be a "CONFIG_MTD_PHYSMAP_BUSWIDTH=4".

Also, there are more configurations you can make, particularly for FLASH.
You should use make menuconfig and look at the other options.

Lastly, there is mention of MTD for the RPX LITE and CLLF boards.  These
have the same FLASH but a 32 bit bus, you may be able to modify this support
to include 64 bit for the ep8260.

-----Original Message-----
From: OHMURA Yutaka [mailto:ohmura@co-nss.co.jp]
Sent: Friday, January 31, 2003 8:40 AM
To: linuxppc-embedded@lists.linuxppc.org
Subject: Re: How to use EP8260 MTD device?



Hi,

In this ML, no one uses EP8260?
Or TSL(2.4.7 base)?

I changed my .config as follows, but still not work.
> # Memory Technology Devices (MTD)
> CONFIG_MTD=y
> CONFIG_MTD_DEBUG=y
> CONFIG_MTD_DEBUG_VERBOSE=3
> CONFIG_MTD_PARTITIONS=y
> CONFIG_MTD_CHAR=y
> CONFIG_MTD_BLOCK=y
> CONFIG_FTL=y
>
> # RAM/ROM/Flash chip drivers
> CONFIG_MTD_CFI=y
> CONFIG_MTD_GEN_PROBE=y
> CONFIG_MTD_CFI_AMDSTD=y
>
> # Mapping drivers for chip access
> CONFIG_MTD_PHYSMAP=y
> CONFIG_MTD_PHYSMAP_START=FF000000
> CONFIG_MTD_PHYSMAP_LEN=FFFFFF
> CONFIG_MTD_PHYSMAP_BUSWIDTH=2

By the way, TSL uses DEC register for timer, is this same in pure PPC-Linux?
I could't find pure PPC-Linux 2.4.7 source code...

Regards,

Yutaka

OHMURA Yutaka <ohmura@co-nss.co.jp> wrote:

>
> Hello,
>
> Now I'm trying to use Embedded Planet 8260 board Flash memory with TimeSys
> Linux 3.1(TSL). I have two type of this board. One has 200MHz clock, have
RTC,
> 64MB PSDRAM, 32MB LSDRAM and 16MB Flash ROM. The other has 300MHz clock,
> no RTC, 32MB PSDRAM and 8MB Flash ROM. My goal is use MTD device under TSL
with
> 300MHz MPU board, but the board looks some other difference with 200MHz
board,
> so TSL can't works fine, so at first I'm trying to use MTD device with
200MHz
> board. But I can't use MTD until now.
> In now situation, /dev/mtd and /dev/mtdblock are normal directory and
there are
> nothing under the directory.
>
> Please tell me how to use MTD on EP8260 under TSL!
>
> Here is my .config
> > # Memory Technology Devices (MTD)
> > CONFIG_MTD=y
> > CONFIG_MTD_DEBUG=y
> > CONFIG_MTD_DEBUG_VERBOSE=3
> > CONFIG_MTD_PARTITIONS=y
> > CONFIG_MTD_CHAR=y
> > CONFIG_MTD_BLOCK=y
> > CONFIG_FTL=y
>
> > # RAM/ROM/Flash chip drivers
> > CONFIG_MTD_CFI=y
> > CONFIG_MTD_JEDECPROBE=y
> > CONFIG_MTD_GEN_PROBE=y
> > CONFIG_MTD_CFI_AMDSTD=y	<-On board Flash memory looks AMD
> 				  chip but the print faint so I
> 				  can't read chip type
> > CONFIG_MTD_CFI_AMDSTD=y
> > CONFIG_MTD_OBSOLETE_CHIPS=y
> > CONFIG_MTD_AMDSTD=y
>
> > # Mapping drivers for chip access
> > CONFIG_MTD_PHYSMAP=y
> > CONFIG_MTD_PHYSMAP_START=FF800000	<-adjusting to 300MHz board
> > CONFIG_MTD_PHYSMAP_LEN=70000000	  I hope 200MHz board can work with
> 					  this parameter
> > CONFIG_MTD_PHYSMAP_BUSWIDTH=2
> other MTD parameters are not set
>
> Under this environment, MTD driver says
> > physmap flash device: 6ffffc at ff800000
> > CFI: Found no Physically mapped flash device at location zero
> > RPX Lite or CLLF flash device: 2000000 at fe000000
> > CFI: Found no RPX device at location zero
> > $Id: ftl.c,v 1.38 2001/09/23 21:15:12 dwmw2 Exp $
>
> This is first time to use MTD for me, so if you know good reference to use
it,
> please tell me too.
> /usr/src/timesys/ep8260/2.4.7-timesys-3.1.180/kernel/Documents was not
help me.
>
> Regards,
>
> Yutaka
>
>


_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
OHMURA, Yutaka <ohmura@co-nss.co.jp>
  Nissin Systems co.,ltd.
  (Phone) +81-75-344-7950  (FAX) +81-75-344-7888
   Ayakoji, Horikawa street, Shimogyo-ku, KYOTO, JAPAN
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2003-02-14 13:59 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2003-01-30 13:41 How to use EP8260 MTD device? OHMURA Yutaka
2003-01-31 13:40 ` OHMURA Yutaka
2003-01-31 13:54   ` Allen Curtis
2003-02-01  6:37     ` OHMURA Yutaka
2003-02-01 10:58       ` Wolfgang Grandegger
2003-02-01 21:55         ` Allen Curtis
  -- strict thread matches above, loose matches on Subject: below --
2003-02-03 14:19 Steven Blakeslee
2003-02-06  5:58 ` OHMURA Yutaka
2003-02-14 13:59   ` OHMURA Yutaka

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