windows-server-2003/base/efiutil/cpuid/cpuid.c

#include <efi.h>
#include <efilib.h>


    // CPUID Registers 
#define    CV_IA64_CPUID0  3328
#define    CV_IA64_CPUID1  3329
#define    CV_IA64_CPUID2  3330
#define    CV_IA64_CPUID3  3331
#define    CV_IA64_CPUID4  3332



EFI_STATUS
EfiMain (    IN EFI_HANDLE           ImageHandle,
             IN EFI_SYSTEM_TABLE     *SystemTable)
{
    UINT64  val64;
    UINT32  val32;
    UINT32  model;
    UINT32  revision;
    UINT32  family;

	InitializeLib( ImageHandle, SystemTable );

    Print( L"CPUID Program\n\n" );
	
    SystemTable->ConOut->ClearScreen( SystemTable->ConOut );
    
    val64 = __getReg( CV_IA64_CPUID3 );
    
    model = ( UINT32 )( ( val64 >> 16 ) & 0xFF );             // ProcessorModel
    Print( L"Processor Model    = %x\n", model );

    revision = ( UINT32 )( ( val64 >> 8 ) & 0xFF );           // ProcessorRevision
    Print( L"Processor Revision = %x\n", revision );
    
    family = ( UINT32 ) ( ( val64 >> 24 ) & 0xFF );           // ProcessorFamily
    Print( L"Processor Family   = %x\n", family );

    val32 = ( UINT32 ) ( ( val64 >> 32 ) & 0xFF );            // ProcessorArchRev
    Print( L"Processor ArchRev  = %x\n\n", val32 );

    switch ( model ) {

        case 0:     Print( L"Itanium    " );
                    break;

        case 1:     Print( L"McKinley   " );
                    break;

        default:    Print( L"IA64       " );
                    break;

    }

    switch ( revision ) {

        case 0:     Print( L"A stepping\n\n" );
                    break;

        case 1:     Print( L"B0 stepping\n\n" );
                    break;

        case 2:     Print( L"B1 stepping\n\n" );
                    break;

        case 3:     Print( L"B2 stepping \n\n" );
                    break;

        default:    Print( L"Unknown stepping\n\n" );
                    break;

    }

    // IA64 architected CPUID0 & CPUID1: Vendor Information.

    val64 = __getReg( CV_IA64_CPUID0 );
    Print( L"VendorString[0]         = %X\n", val64 );
    val64 = __getReg( CV_IA64_CPUID1 );
    Print( L"VendorString[1]         = %X\n", val64 );

    // IA64 architected CPUID2: Processor Serial Number.

    val64 = __getReg( CV_IA64_CPUID2 );
    Print( L"Processor Serial Number = %X\n", val64 );

    // IA64 architected CPUID4: General Features / Capability bits.

    val64 = __getReg( CV_IA64_CPUID4 );
    Print( L"Processor Feature Bits  = %X\n\n", val64 );

	return EFI_SUCCESS;
}