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Last Post 25 Oct 2005 01:51 AM by  sailqiu@163.com
help:Unable to mount root fs???
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sailqiu@163.com
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Posts:


--
24 Oct 2005 01:38 AM
    Who can give me a favor?
    "root=nfs" is wrong?

    ++++++++++++++++++++++++++++++++++++
    losh> load elf tftp/192.168.1.18:/vmlinux
    loading from /tftp/192.168.1.18:/vmlinux:
    R...........
    elf file type : 0x0002
    machine type: 0028 version: 1
    prog start addr : 0x200c8000
    num prog headers: 1
    num sect headers: 10
    offset : 0x00008000 disk length: 0x00157c73 mem len: 0x0017f39c
    phyaddr: 0x200c8000 vaddr : 0x200c8000 dl addr: 0x200c8000
    losh> exec ip=dhcp root=nfs
    kernel cmdline: 'ip=dhcp root=nfs' at 200c0100
    Linux version 2.4.17-rmk2-lineo5 (root@localhost.localdomain) (gcc version 2.95.
    3 20010315 (release)) #2 Mon Oct 24 01:13:27 UTC 2005
    Processor: ARM ARM720T revision 3
    Architecture: LogicPD LH79520 Card Engine
    On node 0 totalpages: 8192
    zone(0): 8192 pages.
    zone(1): 0 pages.
    zone(2): 0 pages.
    Kernel command line: console=ttyAM1,115200 ip=dhcp root=nfs
    setup_timer(): timerLoad=32256
    Console: colour dummy device 80x30
    Calibrating delay loop... 25.70 BogoMIPS
    Memory: 32MB = 32MB total
    Memory: 14288KB available (1206K code, 250K data, 76K init)
    Dentry-cache hash table entries: 4096 (order: 3, 32768 bytes)
    Inode-cache hash table entries: 2048 (order: 2, 16384 bytes)
    Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
    Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
    Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
    POSIX conformance testing by UNIFIX
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    Initializing RT netlink socket
    Starting kswapd
    ttyAM0 at MEM 0xfffc0000 (irq = 23) is a AMBA PrimeCell PL011
    ttyAM1 at MEM 0xfffc1000 (irq = 24) is a AMBA PrimeCell PL011
    ttyAM2 at MEM 0xfffc2000 (irq = 25) is a AMBA PrimeCell PL011
    Console: switching to colour frame buffer device 30x40
    LH79520 Watchdog Timer: timer margin 60 sec
    block: 64 slots per queue, batch=16
    RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
    hd: no drives specified - use hd=cyl,head,sectors on kernel command line
    hd?: reset timed out: status=0x33 { WriteFault SeekComplete Index Error }
    hd?: reset timed out: error=0x33 { SectorIdNotFound TrackZeroNotFound AddrMarkNo
    tFound }, CHS=13066/10/51
    hd: controller still busy
    hd?: reset timed out: status=0x33 { WriteFault SeekComplete Index Error }
    hd?: reset timed out: error=0x33 { SectorIdNotFound TrackZeroNotFound AddrMarkNo
    tFound }, CHS=13066/10/51
    hd: controller still busy
    hd?: reset timed out: status=0x33 { WriteFault SeekComplete Index Error }
    hd?: reset timed out: error=0x33 { SectorIdNotFound TrackZeroNotFound AddrMarkNo
    tFound }, CHS=13066/10/51
    hd: controller still busy
    eth0: SMC91C11xFD(rev:1) at 0xf4800000 IRQ:4 DMA:0 (16-bit) MEM:8192b NOWAIT:1
    eth0: ADDR: 00:08:ee:00:12:44
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP
    IP: routing cache hash table of 512 buckets, 4Kbytes
    TCP: Hash tables configured (established 2048 bind 2048)
    Sending BOOTP requests . OK
    IP-Config: Got BOOTP answer from 192.168.1.18, my address is 192.168.1.200
    IP-Config: Complete:
    device=eth0, addr=192.168.1.200, mask=255.255.255.0, gw=192.168.1.1,
    host=192.168.1.200, domain=, nis-domain=(none),
    bootserver=192.168.1.18, rootserver=192.168.1.18, rootpath=
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    NetWinder Floating Point Emulator V0.95 (c) 1998-1999 Rebel.com
    RAMDISK: Couldn't find valid RAM disk image starting at 0.
    Freeing initrd memory: 16384K
    Looking up port of RPC 100003/2 on 192.168.1.18
    Looking up port of RPC 100005/1 on 192.168.1.18
    Root-NFS: Server returned error -13 while mounting /tftpboot/192.168.1.200
    VFS: Unable to mount root fs via NFS, trying floppy.
    request_module[block-major-2]: Root fs not mounted
    VFS: Cannot open root device "nfs" or 02:00
    Please append a correct "root=" boot option
    Kernel panic: VFS: Unable to mount root fs on 02:00
    Anonymous
    Posts:


    --
    24 Oct 2005 11:19 AM
    Hello,

    I would recommend contacting Sharp regarding these issues since they are currently the ones that are supporting Linux on the LH79520 card engine.

    http://forum.sharpsma.com/

    http://www.sharpsma.com

    Thanks,
    peter.barada@logicpd.com
    New Member
    New Member
    Posts:72


    --
    24 Oct 2005 11:37 AM
    A quick google search for "boot linux kernel using NFS root filesystem" yields a wealth of information on setting up both the host that will supply the NFS root filesystem, as well as the command line that you need in the target to mount the NFS directory as a root filesystem.

    In your case, you're commandline is missing, at a minimum, the nfsroot parameter(which indicates where the root filesystem is) and is of the form:

    nfsroot=host.ip.address:/path/to/nfs/root/filesystem

    where 'host.ip.address' is the IP address of the host that holds the exported direcotry you wish to use, and '/path/to/nfs/root/filesystem' is the path on the host to the directory containing the root filesystem.
    sailqiu@163.com
    New Member
    New Member
    Posts:


    --
    25 Oct 2005 01:51 AM
    Thanks a lot...

    My system is running, with the following paras.

    +++++++++++++++++++++++++++++++++++++
    losh> exec root=nfs nfsroot=192.168.1.25:/tftpboot/rootfs ip=192.168.1.199:192.168.1.25:192.168.1.1:255.255.255.0:::off

    "192.168.1.25" IP of tftp server
    "192.168.1.199" IP of target
    "tftpboot" the root directory of ttftp server
    "rootfs" the link of the "/opt/Embedixbdk/lh79520/tmp/rootfsdir"
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