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IOCTL HAL REBOOT

 

Article updated at 13 Feb 2019
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Using this IOCTL, you can reboot the system.

Please note, the following SoCs support only cold boot:

  • VF50
  • VF61
  • i.MX6
  • i.MX7

Definitions

 
# define FILE_DEVICE_HAL				0x101
# define METHOD_BUFFERED				0x0
# define FILE_ANY_ACCESS				0x0
# define CTL_CODE( DeviceType, Function, Method, Access ) (((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
# define IOCTL_HAL_REBOOT			CTL_CODE(FILE_DEVICE_HAL,  15,      METHOD_BUFFERED, FILE_ANY_ACCESS)
 
BOOL KernelIoControl(DWORD dwIoControlCode, LPVOID lpInBuf, DWORD nInBufSize, LPVOID lpOutBuf, DWORD nOutBufSize, LPDWORD lpBytesReturned);
 

Sample

 
// To force a Cold Boot: let the 2nd function parameter point to a value 0
//                       *lpInBuf = 0;
// To force a Warm Boot: let the 2nd function parameter be NULL
//                       lpInBuf = 0;
if(coldBoot)
{ 
    DWORD zero=0;
    KernelIoControl(IOCTL_HAL_REBOOT, &zero, 4, NULL, 0, NULL);
}
else
{
    KernelIoControl(IOCTL_HAL_REBOOT, NULL, 0, NULL, 0, NULL);
}