A probelem when I add network driver to kernel

[Altera_Forum]

hello, 

I follow the steps you give us to transplant uclinux for DE2 and succeceed,however,when I added the network driver,the following problem appears:  uClinux/Nios II Altera Nios II support © 2004 Microtronix Datacom Ltd.  setup_arch: No persistant network settings signature at 008F0000 Built 1 zonelists Kernel command line: PID hash table entries: 64 (order: 6, 1024 bytes) Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory available: 6512k/8192k RAM, 0k/0k ROM (1230k kernel code, 353k data) Mount-cache hash table entries: 512 NET: Registered protocol family 16 io scheduler noop registered io scheduler deadline registered (default) Serial: JTAG UART driver $Revision: 1.4 $ ttyJ0 at MMIO 0x81004000 (irq = 1) is a jtag_uart RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize NET: Registered protocol family 2 IP route cache hash table entries: 128 (order: -3, 512 bytes) TCP established hash table entries: 512 (order: -1, 2048 bytes) TCP bind hash table entries: 512 (order: -1, 2048 bytes) TCP: Hash tables configured (established 512 bind 512) TCP reno registered TCP bic registered NET: Registered protocol family 1 NET: Registered protocol family 17 VFS: Cannot open root device "<NULL>" or unknown-block(0,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)  what&#39;s the reason and can you show me the solution?

[Altera_Forum]

Ok,I have solve the problem by trying step by step again,a little bit silly? http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/tongue.gif Maybe hippo will tell us a more technical method http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/tongue.gif  

  --- Quote Start ---  originally posted by hustwb@Jul 22 2006, 09:04 AM hello,  i follow the steps you give us to transplant uclinux for de2 and succeceed,however,when i added the network driver,the following problem appears:   uclinux/nios ii altera nios ii support © 2004 microtronix datacom ltd.  setup_arch: no persistant network settings signature at 008f0000 built 1 zonelists kernel command line: pid hash table entries: 64 (order: 6, 1024 bytes) dentry cache hash table entries: 2048 (order: 1, 8192 bytes) inode-cache hash table entries: 1024 (order: 0, 4096 bytes) memory available: 6512k/8192k ram, 0k/0k rom (1230k kernel code, 353k data) mount-cache hash table entries: 512 net: registered protocol family 16 io scheduler noop registered io scheduler deadline registered (default) serial: jtag uart driver $revision: 1.4 $ ttyj0 at mmio 0x81004000 (irq = 1) is a jtag_uart ramdisk driver initialized: 16 ram disks of 4096k size 1024 blocksize net: registered protocol family 2 ip route cache hash table entries: 128 (order: -3, 512 bytes) tcp established hash table entries: 512 (order: -1, 2048 bytes) tcp bind hash table entries: 512 (order: -1, 2048 bytes) tcp: hash tables configured (established 512 bind 512) tcp reno registered tcp bic registered net: registered protocol family 1 net: registered protocol family 17 vfs: cannot open root device "<null>" or unknown-block(0,0) please append a correct "root=" boot option kernel panic - not syncing: vfs: unable to mount root fs on unknown-block(0,0)  what&#39;s the reason and can you  show me the solution? <div align='right'><{post_snapback}> (index.php?act=findpost&pid=17063)  --- quote end ---    --- Quote End ---