User's Manual

ProgrammingChapter —7
280 700 Series Color Mobile Computer User’s Manual
IOCTL_GET_CPU_ID
Returns Xscale processor ID.
Usage
#include “oemioctl.h”
Syntax
BOOL KernelIoControl( IOCTL_GET_CPU_ID,LPVOID lpInBuf, DWORD
nInBufSize,LPVOID lpOutBuf,DWORD nOutBufSize,LPDWORD
lpBytesReturned );
Parameters
lpInBuf Should point to a CPUIdInfo structure defined in
OEMIOCTL.H.
lpInBufSize Should be sizeof(CPUIdInfo).
lpOutBuf Should be NULL.
nOutBufSize Should be set to 0.
lpBytesReturned Returns sizeof(PROCESSOR_INFO);
Return Values
Returns TRUE if function succeeds. Returns FALSE if the function fails.
GetLastError() may be used to get the extended error value.
Reboot Functions
There are several methods, via Kernel I/O Control functions, that an ap-
plication program can use to force the 700 Series Computer to reboot.
IOCTL_HAL_REBOOT
IOCTL_HAL_REBOOT performs a warm-boot. See page 278.
IOCTL_HAL_COLDBOOT
Invoking the KernelIOControl function with
IOCTL_HAL_COLDBOOT forces a cold reboot. This resets the 700
Series Computer and reloads Windows CE as if a power-up had been
performed. The contents of the Windows CE RAM-based object store are
discarded. See page 275.
IOCTL_HAL_WARMBOOT
This function is supported on the 700 Series Computers. It performs a
warm boot of the system, preserving the object store. See page 275.