wince6.0系统S5PV210实现软件重启或复位或关机
应用层实现方法：
利用OEM制造商提供的OEMIoControl可以随意地处理IOCTL_HAL_REBOOT。然而应用程序不能直接调用OEMIoControl，只能通过先调用KernelIoControl然后由KernelIoControl调用OEMIoControl。
#include "winioctl.h"
BOOL KernelIoControl(DWORD dwIoControlCode, LPVOID lpInBuf, DWORD nInBufSize, LPVOID lpOutBuf, DWORD nOutBufSize, LPDWORD lpBytesReturned);
#define IOCTL_HAL_GET_DEVICE_INFO CTL_CODE(FILE_DEVICE_HAL, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_HAL_REBOOT CTL_CODE(FILE_DEVICE_HAL, 15, METHOD_BUFFERED, FILE_ANY_ACCESS)
KernelIoControl(IOCTL_HAL_REBOOT, &inVal, 4, outBuf, 1024, &bytesReturned);
执行上面的代码可以实现软重起。如果你想要实现硬重起，还需首先调用SetCleanRebootFlag函数。
也可以这样用KernelIoControl(IOCTL_HAL_REBOOT, NULL, 0, NULL, 0, NULL);这个函数调用底层的OEMIoControl（）函数。
或者：关机：SetSystemPowerState(NULL, POWER_STATE_OFF, POWER_FORCE);改为RESET就行。这个函数调用底层的哪个函数呢？
待机：GwesPowerOffSystem();
底层实现方法：
The kernel calls the OEMIoControl function when a device driver or application calls the kernel function KernelIoControl and passes an I/O control code.
（当应用程序或者驱动调用KernelIoControl 的时候，KernelIoControl 就会调用OEMIoControl 去实现。）
This function is also called when the SystemParametersInfo function is called with SPI_GETOEMINFO or SPI_GETPLATFORMINFO.
The system is fully preemptible when this function is called. The kernel does no processing, but it passes all parameters directly to the function supplied by you. （当这个函数被调用的时候系统完全可能被抢占，内核没有处理，直接传递参数到你提供的函数。这个我觉得说的很别扭，估计是直接传递参数到OEMIoControl ）
This function is provided solely to allow your device driver or application to communicate with an OAL and its specific functionality.
（该函数用来提供驱动/应用程序和OAL的通信）
2012-08-20今天在：oal\power\reset.c文件的OEMSWReset函数里实现硬件关闭PMIC_PWRHOLD_OUTPUT，然后调用KernelIoControl(IOCTL_HAL_REBOOT, &inVal, 4, outBuf, 2, &bytesReturned)这个函数，测试还是没有实现系统重启。继续研究看是怎么回事，跟注册表有关？注册表common.reg里和重启有个的如下：
; Entering this system power state reboots the system with a clean object
; store. If an OEM includes this state in their platform, they must
; support KernelIoControl() with IOCTL_HAL_REBOOT.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\State\ColdReboot]
"Default"=dword:4 ; D4
"Flags"=dword:800000 ; POWER_STATE_RESET
; Entering this system power state reboots the system. If an OEM includes this state in
; their platform, they must support KernelIoControl() with IOCTL_HAL_REBOOT.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\State\Reboot]
"Default"=dword:4 ; D4
"Flags"=dword:800000 ; POWER_STATE_RESET
这里面Flags是什么含义？
2012-08-21：在自己的电源控制的驱动里实现软件重启或关机了。
