X86BaseCpuLib.c File Reference

#include <Register/Intel/Cpuid.h>
#include <Register/Amd/Cpuid.h>
#include <Library/BaseLib.h>
#include <Library/CpuLib.h>

Go to the source code of this file.

Functions
BOOLEAN EFIAPI	StandardSignatureIsAuthenticAMD (VOID)
UINT32 EFIAPI	GetCpuFamilyModel (VOID)
UINT8 EFIAPI	GetCpuSteppingId (VOID)

Detailed Description

This library defines some routines that are generic for IA32 family CPU.

The library routines are UEFI specification compliant.

Copyright (c) 2020, AMD Inc. All rights reserved.
Copyright (c) 2021, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file X86BaseCpuLib.c.

Function Documentation

GetCpuFamilyModel()

UINT32 EFIAPI GetCpuFamilyModel

(

VOID

)

Return the 32bit CPU family and model value.

Returns

CPUID[01h].EAX with Processor Type and Stepping ID cleared.

Definition at line 48 of file X86BaseCpuLib.c.

GetCpuSteppingId()

UINT8 EFIAPI GetCpuSteppingId

(

VOID

)

Return the CPU stepping ID.

Returns

CPU stepping ID value in CPUID[01h].EAX.

Definition at line 72 of file X86BaseCpuLib.c.

StandardSignatureIsAuthenticAMD()

BOOLEAN EFIAPI StandardSignatureIsAuthenticAMD

(

VOID

)

Determine if the standard CPU signature is "AuthenticAMD".

Return values

TRUE	The CPU signature matches.
FALSE	The CPU signature does not match.

Definition at line 27 of file X86BaseCpuLib.c.