Chapter 3 — Configuring the Computer

Parameters

 

 

 

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);

 

 

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

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.

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Intermec 751G user manual Ioctlgetcpuid, Returns Xscale processor ID