请教大家：TQ2440移植运行后会自动重启？

    我按照教程逐步移植好内核和文件系统后，板子运行一会会自动重启。不知道有没人遇见和我一样的情况，如何解决呢？
   运行的打印信息如下：
=================
Start Linux ...
Copy linux kernel from 0x00200000 to 0x30008000, size = 0x00200000 ... Copy Kern
el to SDRAM done,NOW, Booting Linux......
Uncompressing Linux.............................................................
............................................................ done, booting the k
ernel.
Linux version 2.6.30.4 (root@localhost.localdomain) (gcc version 4.3.3 (Sourcery
G++ Lite 2009q1-176) ) #6 Thu Jul 5 21:12:17 CST 2012
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: SMDK2440
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, (c) 2004 Simtec Electronics
S3C244X: core 400.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0
NR_IRQS:85
irq: clearing pending ext status 00080000
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x30
console [ttySAC0] enabled
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: 60920KB available (3412K code, 312K data, 120K init, 0K highmem)
Calibrating delay loop... 199.47 BogoMIPS (lpj=498688)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
net_namespace: 936 bytes
NET: Registered protocol family 16
S3C Power Management, Copyright 2004 Simtec Electronics
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C24XX DMA Driver, (c) 2003-2004,2006 Simtec Electronics
DMA channel 0 at c4808000, irq 33
DMA channel 1 at c4808040, irq 34
DMA channel 2 at c4808080, irq 35
DMA channel 3 at c48080c0, irq 36
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c2440-i2c s3c2440-i2c: slave address 0x10
s3c2440-i2c s3c2440-i2c: bus frequency set to 97 KHz
s3c2440-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
NetWinder Floating Point Emulator V0.97 (extended precision)
JFFS2 version 2.2. (NAND) (SUMMARY)  漏 2001-2006 Red Hat, Inc.
ROMFS MTD (C) 2007 Red Hat, Inc.
yaffs Jul  5 2012 21:11:56 Installing.
msgmni has been set to 119
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
GPIO-Control initialized
PWM-Test initialized
adc initialized
lp: driver loaded but no devices found
ppdev: user-space parallel port driver
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
s3c2440-uart.0: tq2440_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2440-uart.1: tq2440_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: tq2440_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2440
brd: module loaded
loop: module loaded
Uniform Multi-Platform E-IDE driver
ide-gd driver 1.18
ide-cd driver 5.00
Driver 'sd' needs updating - please use bus_type methods
dm9000 Ethernet Driver, V1.31
Now use the default MAC address: 10:23:45:67:89:ab
eth0 (dm9000): not using net_device_ops yet
eth0: dm9000e at c4872000,c4876004 IRQ 51 MAC: 10:23:45:67:89:ab (EmbedSky)
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2440-nand s3c2440-nand: Tacls=3, 30ns Twrph0=7 70ns, Twrph1=3 30ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bi
t)
Scanning device for bad blocks
Bad eraseblock 1105 at 0x000008a20000
Bad eraseblock 1977 at 0x00000f720000
Creating 3 MTD partitions on "NAND 256MiB 3,3V 8-bit":
0x000000000000-0x000000040000 : "EmbedSky_Board_uboot"
0x000000200000-0x000000400000 : "EmbedSky_Board_kernel"
0x000000400000-0x00000ff80000 : "EmbedSky_Board_yaffs2"
usbmon: debugfs is not available
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usbcore: registered new interface driver libusual
usbcore: registered new interface driver usbserial
USB Serial support registered for generic
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial Driver core
USB Serial support registered for FTDI USB Serial Device
usbcore: registered new interface driver ftdi_sio
ftdi_sio: v1.4.3:USB FTDI Serial Converters Driver
USB Serial support registered for pl2303
usbcore: registered new interface driver pl2303
pl2303: Prolific PL2303 USB to serial adaptor driver
mice: PS/2 mouse device common for all mice
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c2410-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c2410-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: starting watchdog timer
s3c2410-wdt s3c2410-wdt: watchdog active, reset abled, irq enabled
mapped channel 0 to 0
s3c2440-sdi s3c2440-sdi: powered down.
s3c2440-sdi s3c2440-sdi: initialisation done.
Advanced Linux Sound Architecture Driver Version 1.0.18a.
ALSA device list:
  No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
s3c2410-rtc s3c2410-rtc: hctosys: invalid date/time
s3c2440-sdi s3c2440-sdi: powered down.
end_request: I/O error, dev mtdblock2, sector 256
isofs_fill_super: bread failed, dev=mtdblock2, iso_blknum=64, block=128
yaffs: dev is 32505858 name is "mtdblock2"
yaffs: passed flags ""
yaffs: Attempting MTD mount on 31.2, "mtdblock2"
yaffs: auto selecting yaffs2
block 1074 is bad
block 1946 is bad
yaffs_read_super: isCheckpointed 0
VFS: Mounted root (yaffs filesystem) on device 31:2.
Freeing init memory: 120K
: not found/rcS: line 22:

Please press Enter to activate this console.
下面就是重启了。
[root@EmbedSky /]# *** Warning - bad CRC or NAND, using default environment


我的rcs和inittab 如下
# /etc/inittab
::sysinit:/etc/init.d/rcS
tq2440_serial0::askfirst:-/bin/sh
::ctrlaltdel:/sbin/reboot
::shutdown:/bin/umount -a -r

===============
#!/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
runlevel=S
prevlevel=N
umask 022
export PATH runlevel prevlevel
#
# Trap CTRL-C &c only in this shell so we can interrupt subprocesses.
#
mount -a
mkdir /dev/pts
mount -t devpts devpts /dev/pts
echo /sbin/mdev > /proc/sys/kernel/hotplug
mdev -s
mkdir -p /var/lock
/bin/hostname -F /etc/sysconfig/HOSTNAME




##### EmbedSky BIOS for SKY2440/TQ2440 #####

我也有同样的问题，可以进入系统，并执行ls，cd等指令，但没过多长时间，会显示
*** Warning - bad CRC or NAND, using default environment，和楼主同样的问题，然后就是重启了，
同求问题答案。

不同的是，我启动系统时，最后几行启动信息（紧接在命令提示符前面的几行）是：
yaffs: dev is 32505858 name is "mtdblock2"
yaffs: passed flags ""
yaffs: Attempting MTD mount on 31.2, "mtdblock2"
yaffs: auto selecting yaffs2
block 1339 is bad
block 1659 is bad
block 1701 is bad
yaffs_read_super: isCheckpointed 0
VFS: Mounted root (yaffs filesystem) on device 31:2.
Freeing init memory: 180K
mount: applet not found
mount: applet not found
mdev: applet not found

找到一个解决方案，不知道还有没有其他的。
重新编译内核，在编译内核时，driver里，watch dog那里不要选择，就可以了。

看门狗自启动？喂狗？

wuweidong 发表于 2012-7-9 09:57
牛逼

但我不知道为什么，关了watch dog，就不重启了，你知道原因吗？

亲，这个问题在论坛里面讲了很多次，并且Linux移植教程里面都讲了的。
看门狗的作用就是在规定的时间内不喂狗就复位芯片。你在内核中启动了看门狗，但是你没有喂狗，所以就重启了。

开狗还得喂狗啊！

mr99 发表于 2012-7-7 22:03
找到一个解决方案，不知道还有没有其他的。
重新编译内核，在编译内核时，driver里，watch dog那里不要选择 ...

:)!确实是这个问题，谢谢！
我的方向搞错了，使用天嵌的文件系统+我自己的内核就没问题，使用我自己编的文件系统就出现这种情况，一直在找文件系统的配置。。。

我的问题和大家一样的，先试试是不是看门狗的问题！！不过不知道怎么在文件系统里加上喂狗程序？有知道的高手能回一下吗？

:'(:L:curse::dizzy:

这个问题我也遇到了，找了好久，终于找到解决办法了，在文件系统Sbin添加EmbedSky_wdg（可以从光盘自带的文件系统中获得），这个就是所谓的喂狗程序啦！然后在rcS中后台启动EmbedSky_wdg就ok了！
EmbedSky_wdg &