我在IPNC3.8上使用SPI flash。设置为spi启动模式后，上电能正常启动U-boot。但是在u-boot中，使用reset命令，系统启动不了，打印
ZTITS_IPNC#reset
resetting ...就停在这里了。
。在内核启动后，使用reboot重启系统，也启动不了。打印如下：
root@dm814x-evm:~# reboot
Broadcast message from root (ttyO0) (Fri Nov 9 13:01:40 2012):
INIT: Sending processes the TERM signal
INIT: Stopping telnet daemon.
Deconfiguring network interfaces... cat: can't open '/var/run/udhcpc.eth0.pid': No such file or directory
done.
Stopping syslogd/klogd: stopped syslogd (pid 376)
stopped klogd (pid 378)
done
Sending all processes the TERM signal...
Sending all processes the KILL signal...
isl12022_set_datetime: secs=51, mins=1, hours=13, mday=9, mon=10, year=112, wday=5
Unmounting remote filesystems...
Deactivating swap...
Unmounting local filesystems...
UBIFS: un-mount UBI device 1, volume 0
UBIFS: un-mount UBI device 0, volume 0
Rebooting... Restarting system.
然后就停在这里了。
请问是怎么回事？使用nand flash的话，reset和reboot都能正常使用。