使用NFS启动内核，分别执行cat /proc/mtd,flash_eraseall /dev/mtd3,mount -t yaffs /dev/mtdblock3 /mnt,cd /mnt,tar xzvf /home/rootfs.tar.gz。解压完成后/mnt下出现了rootfs目录，但是重新启动，设置启动参数setenv bootargs init=/linuxrc console=ttyS0,115200n8 ip=off root=/dev/mtdblock3 rw noinitrd rootfstype=yaffs mem=120M davincihd_capture.channel0_numbuffers=4后，内核无法以yaffs文件系统启动。请问这是什么问题，在制作rootfs时已经在/dev/下创建了console和null了。以下是启动信息：
U-Boot 1.2.0 (Aug 9 2013 - 16:44:56)
I2C: ready
DRAM: 128 MB
unknown vendor=0 Flash: 0 kB
NAND: 64 MiB
In: serial
Out: serial
Err: serial
ARM Clock :- 297MHz
DDR Clock :- 297MHz
Hit any key to stop autoboot: 0
DM6467 EVM # setenv bootargs init=/linuxrc console=ttyS0,115200n8 ip=off root=
/dev/mtdblock3 rw noinitrd rootfstype=yaffs mem=120M davincihd_capture.channel0_
numbuffers=4
DM6467 EVM #
DM6467 EVM # saveenv
Saving Environment to NAND...
Erasing Nand...Writing to Nand... done
DM6467 EVM #
DM6467 EVM # tftp 80700000 uImage
TFTP from server 192.168.2.33; our IP address is 192.168.2.142
Filename 'uImage'.
Load address: 0x80700000
Loading: #################################################################
#################################################################
#################################################################
########################################################
done
Bytes transferred = 1280872 (138b68 hex)
DM6467 EVM # bootm
## Booting image at 80700000 ...
Image Name: Linux-2.6.10_mvl401-davinci_evm-
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1280808 Bytes = 1.2 MB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
OK
Starting kernel ...
Uncompressing Linux.............................................................
........................... done, booting the kernel.
Linux version 2.6.10_mvl401-davinci_evm-PSP_01_30_00_082 (root@davinci-desktop)
(gcc version 3.4.3 (MontaVista 3.4.3-25.0.104.0600975 2006-07-06)) #1 Wed Nov 13
09:01:05 CST 2013
CPU: ARM926EJ-Sid(wb) [41069265] revision 5 (ARMv5TEJ)
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
CPU0: D cache: 8192 bytes, associativity 4, 32 byte lines, 64 sets
Machine: DaVinci DM6467 EVM
Memory policy: ECC disabled, Data cache writeback
DM6467
Built 1 zonelists
Kernel command line: init=/linuxrc console=ttyS0,115200n8 ip=off root=/dev/mtdbl
ock3 rw noinitrd rootfstype=yaffs mem=120M davincihd_capture.channel0_numbuffers
=4
PID hash table entries: 512 (order: 9, 8192 bytes)
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 120MB = 120MB total
Memory: 118784KB available (2192K code, 472K data, 160K init)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
spawn_desched_task(00000000)
desched cpu_callback 3/00000000
ksoftirqd started up.
desched cpu_callback 2/00000000
desched thread 0 started up.
NET: Registered protocol family 16
DaVinci: 48 gpio irqs
Registering platform device 'serial8250.0'. Parent at platform
Registering platform device 'musb_hdrc'. Parent at platform
Registering platform device 'nand_davinci.0'. Parent at platform
DaVinci I2C DEBUG: 09:00:04 Nov 13 2013
Registering platform device 'i2c'. Parent at platform
ch0 default output "COMPOSITE", mode "NTSC"
ch1 default output "", mode ""
SCSI subsystem initialized
JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc.
yaffs Nov 13 2013 08:59:47 Installing.
Registering platform device 'DavinciHD_vdce.2'. Parent at platform
CIR device registered successfully (Major = 253, Minor =
0)<6>Registering platform device 'cir.0'. Parent at platform
Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing disabled
Registering platform device 'serial8250'. Parent at platform
ttyS0 at MMIO 0x1c20000 (irq = 40) is a ST16654
ttyS1 at MMIO 0x1c20400 (irq = 41) is a ST16650V2
io scheduler noop registered
io scheduler anticipatory registered
RAMDISK driver initialized: 1 RAM disks of 32768K size 1024 blocksize
Registering platform device 'ti_davinci_emac'. Parent at platform
TI DaVinci EMAC: MAC address is 7f:00:00:00:00:00
TI DaVinci EMAC Linux version updated 5.0
TI DaVinci EMAC: Installed 1 instances.
netconsole: not configured, aborting
i2c /dev entries driver
Linux video capture interface: v1.00
Registering platform device 'vpif capture.1'. Parent at platform
Registering platform device 'vpif display.1'. Parent at platform
elevator: using anticipatory as default io scheduler
nand_davinci nand_davinci.0: Using soft ECC
NAND device: Manufacturer ID: 0x20, Chip ID: 0x76 (ST Micro NAND 64MiB 3,3V 8-bi
t)
Scanning device for bad blocks
Creating 4 MTD partitions on "nand_davinci.0":
0x00000000-0x00080000 : "bootloader"
0x00080000-0x000a0000 : "params"
0x000a0000-0x004a0000 : "kernel"
0x004a0000-0x04000000 : "filesystem"
nand_davinci nand_davinci.0: hardware revision: 2.2
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 8192 bind 16384)
NET: Registered protocol family 1
NET: Registered protocol family 17
yaffs: dev is 32505859 name is "mtdblock3"
yaffs: Attempting MTD mount on 31.3, "mtdblock3"
VFS: Mounted root (yaffs filesystem).
Freeing init memory: 160K
Warning: unable to open an initial console.
Kernel panic - not syncing: No init found. Try passing init= option to kernel.
