RE：Re: [Yaffs] A newbie to yaffs

Wed May 24 06:50:14 BST 2006

Sorry, I don't know what the kernel driver you point.
The processor I used is freescale's i.MX21 which has its own nand flash controller.
The attached file is the archive of linux-2.4.18/drivers/mtd/nand directory. 

----- Original Message -----From:"Manav Gautam" <bandwidthcrunch at gmail.com>To:"hurray_0 at sina.com" <hurray_0 at sina.com>Subject:Re: [Yaffs] A newbie to yaffsDate:Tue,23 May 2006 19:30:44 CSTWhich kernel driver ? and how is the chip connected ?  
On 5/23/06, hurray_0 at sina.com < hurray_0 at sina.com> wrote:
Hi everybody,

    I am a new biehere.I had sent a mail sevral days ago, but with no reply. Maybe I made some mistakes when I was sending the mail, so I made a copy of it. 
    I am using linux－2.4.18－rmk4 on my ARM board and I used cramfs with a nor flash before. I tried to put YAFFS to the kernal tree and use it with a new added nand flash on my system. After compiling, I can see yaffs under the /proc:
~ # ls /proc1            47           apmc             fs           misc         swaps10           48           bus              interrupts   modules      sys16           5            cmdline          iomem        mounts       sysvipc2            51           cpu              ioports      mtd          tty3            6            cpuinfo          kcore        net          uptime32           7            devices          kmsg         partitions   version4            8            driver           ksyms        scsi         yaffs44           9            execdomains      loadavg      self45           92           fb               locks        slabinfo46           MX2_DMA      filesystems      meminfo      stat
~ # cat /proc/yaffsYAFFS built:May 20 2006 13:51:43$Id: yaffs_fs.c,v 1.39 2005/04/24 08:54:36 charles Exp $$Id: yaffs_guts.c,v 1.41 2005/04/24 08:54:36 charles Exp $

    Also I can see yaffs in /proc/filesystem:~ # cat /proc/filesystems nodev rootfsnodev bdevnodev procnodev sockfsnodev tmpfsnodev shmnodev pipefsext2 cramfsumsdosmsdosvfatnodev devfsnodev nfsntfsjffs2yaffsromfsnodev autofsnodev devptsnodev usbdevfsnodev usbfs

    but I faild to mount the /dev/mtdblock/3 as a yaffs partition:~ # mount -t yaffs /dev/mtdblock/3 /mntyaffs: Attempting MTD mount on 31.3, dev is 7939 "1f:03" yaffs: MTD device does not support required functions mount: Mounting /dev/mtdblock/3 on /mnt failed: Invalid argument
    PS: There are 5 partitions in my board. The last two is for NAND Flash :Using static partition definitionCreating 3 MTD partitions on "Motorola Mx2 Flash":0x00000000-0x00100000 : "bootloader" 0x00100000-0x00300000 : "kernel"0x00300000-0x01000000 : "file system"nand_maf_id:0xec nand_dev_id:0x76NAND device: Manufacture ID: 0xec, Chip ID: 0x76 (Samsung unknown 64Mb)Creating 2 MTD partitions on "Samsung unknown 64Mb": 0x00000000-0x00400000 : "yaffs"0x00400000-0x04000000 : "user

    Can anybody help me to resolve this problem?

    Are you able to receive my mail and open it? I am really eager to get help from all of you.

Best regards!
Hurray

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