帮忙看一下，linux启动信息，谢谢

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帮忙看一下，linux启动信息，谢谢 [复制链接]

Uncompressing Linux........................................................... done, booting the kernel.
Linux version 2.6.20 (root@localhost.localdomain) (gcc version 4.0.0 (DENX ELDK 4.1 4.0.0)) #1 Thu Apr 26 18:26:53 CST 2007
CPU: XScale-PXA255 [69052d06] revision 6 (ARMv5TE), cr=0000397f
Machine: CEB255 Development Board
Memory policy: ECC disabled, Data cache writeback
Memory clock: 99.53MHz (*27)
Run Mode clock: 199.07MHz (*2)
Turbo Mode clock: 199.07MHz (*1.0, inactive)
BUG: mapping for 0x08000000 at 0xe0000300 overlaps vmalloc space
CPU0: D VIVT undefined 5 cache
CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
Built 1 zonelists.  Total pages: 16256
Kernel command line: root=/dev/nfs ip=bootp console=ttyS0,19200 mem=64M
PID hash table entries: 256 (order: 8, 1024 bytes)
start_kernel(): bug: interrupts were enabled early
Console: colour dummy device 80x30
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 63024KB available (1596K code, 164K data, 80K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
ceb255_init()
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (NAND) (C) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
Console: switching to colour frame buffer device 80x30
pxa2xx-uart.0: ttyS0 at MMIO 0x40100000 (irq = 15) is a FFUART
pxa2xx-uart.1: ttyS1 at MMIO 0x40200000 (irq = 14) is a BTUART
pxa2xx-uart.2: ttyS2 at MMIO 0x40700000 (irq = 13) is a STUART
pxa2xx-uart.3: ttyS3 at MMIO 0x41600000 (irq = 0) is a HWUART
***cs89x0_probe***
io:0
io:0
cs89x0:cs89x0_probe(0x0)
***io==0***
***ioaddr:e0000300
cs89x0.c: v2.4.3-pre1 Russell Nelson , Andrew Morton
eth0: cs8900 rev J found at 0xe0000300
cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line
cs89x0 media  IRQ 77, programmed I/O, MAC 00:00:00:00:00:00
cs89x0_probe1() successful
***cs89x0_probe***
io:0
io:0
cs89x0:cs89x0_probe(0x0)
***io==0***
***ioaddr:e0000300
cs89x0: request_region(0xe0000300, 0x10) failed
cs89x0: no cs8900 or cs8920 detected.  Be sure to disable PnP with SETUP
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 1
XScale DSP coprocessor detected.
VFS: Cannot open root device "nfs" or unknown-block(0,255)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,255)

zhangssd

应该在 root=/dev/nfs 后面 有个诸如：nfsroot=主机IP:/路径   形式的语句。同时，要确保主机的nfs server已经启动。