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Chapter 3 — Configuring the Computer
751G Color Mobile Computer User’s Manual 77
Parameters
Return Values
Returns TRUE if function succeeds. Returns FALSE if the function fails.
GetLastError() may be used to get the extended error value.
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
Return Values
Returns TRUE if function succeeds. Returns FALSE if the function fails.
GetLastError() may be used to get the extended error value.
lpInBuf Should be set to NULL.
nInBufSize Should be set to zero.
lpOutBuf Should be a pointer to the PROCESSOR_INFO structure. Its
structure stores information describing the CPU more descriptively.
typedef __PROCESSOR_INFO {
WORD wVersion; // Set to value 1
WCHAR szProcessorCore[40];// “ARM\0”
WORD wCoreRevision;// 4
WCHAR szProcessorName[40];// “PXA255\0”
WORD wProcessorRevision;// 0
WCHAR szCatalogNumber[100];// 0
WCHAR szVendor[100];// “Intel Corporation\0”
DWORD dwInstructionSet;// 0
DWORD dwClockSpeed;// 400
}
nOutBufSize Should be set to sizeof(PROCESSOR_INFO) in bytes.
lpBytesReturned Returns sizeof(PROCESSOR_INFO);
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);