启动uclinux的时候遇到的问题

mananaddd

编译好zImage,romfs,烧到flash之后,启动uclinux的时候遇到的问题
进不到文件系统，提示为：
Kernel panic: I have no root and I want to scream

请问是什么问题，该如何解决？
多谢解答！

具体启动信息附下：
Embest S3CEV40 Bootloader version 1.1
Memory map:
  0x00800000 @ 0x0c000000 (8 MB)
.Loading kernel from flash .... done

Starting kernel ...

Now jumping ...

Decompress to 0x0c008000
Uncompressing Linux................................Kernel decompress OK
done, booting the kernel.
Linux version 2.4.17-uc1 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #169 三 9月 6 23:07:12 CST 2006
Kernel command line:root=/dev/rom0Linux version 2.4.17-uc1 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #169 三 9月 6 23:07:12 CST 2006
Processor: Samsung S3C44B0 revision 1
Architecture: S3CEV40
On node 0 totalpages: 4096
zone(0): 0 pages.
zone(1): 4096 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/rom0
Calibrating delay loop... 32.87 BogoMIPS
start_kernel 8:before mem_init
Memory: 8MB = 8MB total
Memory: 6876KB available (832K code, 172K data, 36K init)
after mem_init
start_kernel 9
Dentry-cache hash table entries: 1024 (order: 1, 8192 bytes)
Inode-cache hash table entries: 512 (order: 0, 4096 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: 2048 (order: 1, 8192 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
NTFS driver v1.1.21 [Flags: R/O]
ttyS0 at I/O 0x1d00000 (irq = 3) is a S3C44B0
ttyS1 at I/O 0x1d04000 (irq = 2) is a S3C44B0
block: 64 slots per queue, batch=16
SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
PPP generic driver version 2.4.1
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 512 bind 512)
Kernel panic: I have no root and I want to scream