A bit info (and memo for me ^^) EP8260 using four 16 bits flash ROM (64bit width), and I tried to send CFI query command. But Linux MTD driver looks not think like this design. I hope It can use as same as two 16 bits flash ROM (32bit width) or one 16 bits flash ROM (16bit width).
My first try, do "*(volatile unsigned int *)(0xFF000000 + 0x55 * 8) = 0x0098;", after that I got data "Q" with "data = *(volatile unsigned int *)(0xFF000000 + 0x10 * 8);" same as "R" and "Y". But I could't got "Q" when I did "writel(0x0098, 0xFF000000 + 0x55 * 8);", I wondered, finally I got "Q" when I did "writel(0x9800, 0xFF000000 + 0x55 * 8);", so the "writel" wrapper must be adjust EP8260 (or for big endian MPUs).... OHMURA Yutaka <ohmura at co-nss.co.jp> wrote: > > Hi, > > I got some info about EP8260, the 200MHz uses AM29LV320, and it's not > supported > by Linux, so I'll tring to use it now. > And I'm tring to add set BCSR2 register GFWP bit which controll Flash > write/not. > > Steven Blakeslee <BlakesleeS at embeddedplanet.com> wrote: > > > > > 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 at co-nss.co.jp] > > Sent: Friday, January 31, 2003 8:40 AM > > To: linuxppc-embedded at 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 at 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 at 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 > > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > > > > > > > > > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > OHMURA, Yutaka <ohmura at 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 > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > > > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ OHMURA, Yutaka <ohmura at 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/
