mirror of https://github.com/acidanthera/audk.git
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/** @file
|
|
|
|
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
|
|
|
|
|
|
This program and the accompanying materials are licensed and made available under
|
|
|
|
the terms and conditions of the BSD License that accompanies this distribution.
|
|
|
|
The full text of the license may be found at
|
|
|
|
http://opensource.org/licenses/bsd-license.php.
|
|
|
|
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
|
|
|
|
|
|
Module Name:
|
|
|
|
|
|
EfiCpuVersion.c
|
|
|
|
Abstract:
|
|
|
|
Provide cpu version extract considering extended family & model ID.
|
|
--*/
|
|
|
|
#include <Library/CpuIA32.h>
|
|
|
|
/**
|
|
Extract CPU detail version infomation
|
|
|
|
@param FamilyId FamilyId, including ExtendedFamilyId
|
|
@param Model Model, including ExtendedModel
|
|
@param SteppingId SteppingId
|
|
@param Processor Processor
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
EfiCpuVersion (
|
|
IN OUT UINT16 *FamilyId, OPTIONAL
|
|
IN OUT UINT8 *Model, OPTIONAL
|
|
IN OUT UINT8 *SteppingId, OPTIONAL
|
|
IN OUT UINT8 *Processor OPTIONAL
|
|
)
|
|
|
|
{
|
|
EFI_CPUID_REGISTER Register;
|
|
UINT8 TempFamilyId;
|
|
|
|
EfiCpuid (EFI_CPUID_VERSION_INFO, &Register);
|
|
|
|
if (SteppingId != NULL) {
|
|
*SteppingId = (UINT8) (Register.RegEax & 0xF);
|
|
}
|
|
|
|
if (Processor != NULL) {
|
|
*Processor = (UINT8) ((Register.RegEax >> 12) & 0x3);
|
|
}
|
|
|
|
if (Model != NULL || FamilyId != NULL) {
|
|
TempFamilyId = (UINT8) ((Register.RegEax >> 8) & 0xF);
|
|
|
|
if (Model != NULL) {
|
|
*Model = (UINT8) ((Register.RegEax >> 4) & 0xF);
|
|
if (TempFamilyId == 0x6 || TempFamilyId == 0xF) {
|
|
*Model = (UINT8) (*Model | ((Register.RegEax >> 12) & 0xF0));
|
|
}
|
|
}
|
|
|
|
if (FamilyId != NULL) {
|
|
*FamilyId = TempFamilyId;
|
|
if (TempFamilyId == 0xF) {
|
|
*FamilyId = (UINT8 ) (*FamilyId + (UINT16) ((Register.RegEax >> 20) & 0xFF));
|
|
}
|
|
}
|
|
}
|
|
}
|