reboot problem on imx233 micro

[sandro]

I have a Olinuxino imx233 micro Rev B.

The system is the ArchLinux downloaded from
http://archlinuxarm.org/platforms/armv5/olinuxino

when I reboot the system with
reboot or shutdown -r now
I have this message and the system are stopped at last line without start:

[root@olinuxino ~]# reboot
[  OK  ] Stopped target Local File Systems (Pre).
[  OK  ] Stopped target Graphical Interface.
[  OK  ] Stopped target Multi-User.
         Stopping OpenNTP Daemon...
         Stopping Periodic Command Scheduler...
         Stopping OpenSSH Daemon...
[  OK  ] Stopped target Login Prompts.
         Stopping Getty on tty1...
         Stopping Serial Getty on ttyAMA0...
         Stopping Login Service...
         Stopping D-Bus System Message Bus...
         Stopping System Logger Daemon...
[  OK  ] Stopped Periodic Command Scheduler.
[  OK  ] Stopped OpenSSH Daemon.
[  OK  ] Stopped Login Service.
[  OK  ] Stopped Getty on tty1.
[  OK  ] Stopped D-Bus System Message Bus.
[  OK  ] Stopped System Logger Daemon.
[  OK  ] Stopped Serial Getty on ttyAMA0.
         Stopping Permit User Sessions...
[  OK  ] Stopped OpenNTP Daemon.
[  OK  ] Stopped target Network.
[  OK  ] Stopped Permit User Sessions.
[  OK  ] Stopped target Basic System.
[  OK  ] Stopped target Sockets.
[  OK  ] Closed D-Bus System Message Bus Socket.
[  OK  ] Closed Syslog Socket.
[  OK  ] Stopped target System Initialization.
         Stopping Setup Virtual Console...
[  OK  ] Stopped Setup Virtual Console.
         Stopping Apply Kernel Variables...
[  OK  ] Stopped Apply Kernel Variables.
[  OK  ] Stopped target Encrypted Volumes.
[  OK  ] Stopped target Swap.
[  OK  ] Stopped target Local File Systems.
         Stopping Remount Root and Kernel File Systems...
[  OK  ] Stopped Remount Root and Kernel File Systems.
         Starting Update UTMP about System Shutdown...
[  OK  ] Reached target Shutdown.
Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
Unmounting file systems.
Unmounting /dev/mqueue.
Unmounting /sys/kernel/debug.
All filesystems unmounted.
Deactivating swaps.
All swaps deactivated.
Detaching loop devices.
Detaching loopback /dev/loop7.
Detaching loopback /dev/loop6.
Detaching loopback /dev/loop5.
Detaching loopback /dev/loop4.
Detaching loopback /dev/loop3.
Detaching loopback /dev/loop2.
Detaching loopback /dev/loop1.
Detaching loopback /dev/loop0.
All loop devices detached.
Detaching DM devices.
All DM devices detached.
[  438.910000] Restarting system.
HTLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLFC
PowerPrep start initialize power...
Battery Voltage = 2.72V
Chargeable battery detected but               the voltage is too low for battery               powered operation.Booting from 5V               power source.
LLCJan 16 201321:52:52
EMI_CTRL 0x1C084040
FRAC 0x92926192
init_ddr_mt46v32m16_133Mhz
power 0x00820710
Frac 0x92926192
start change cpu freq
hbus 0x00000003
cpu 0x00010001
LLLLLLLFCLJUncompressing Linux... done, booting the kernel.
[    0.000000] of_irq_init: children remain, but no parents