#include <Library/CpuLib.h>

Functions
VOID EFIAPI	InitializeFloatingPointUnits (VOID)

BOOLEAN EFIAPI	StandardSignatureIsAuthenticAMD (VOID)

UINT32 EFIAPI	GetCpuFamilyModel (VOID)

UINT8 EFIAPI	GetCpuSteppingId (VOID)

Detailed Description

Null instance of CPU Library for IA32/X64 specific services.

Copyright (c) 2024, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file X86BaseCpuLibNull.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 46 of file X86BaseCpuLibNull.c.

◆ GetCpuSteppingId()

UINT8 EFIAPI GetCpuSteppingId ( VOID )

Return the CPU stepping ID.

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

Definition at line 59 of file X86BaseCpuLibNull.c.

◆ InitializeFloatingPointUnits()

VOID EFIAPI InitializeFloatingPointUnits ( VOID )

Initializes floating point units for requirement of UEFI specification. This function initializes floating-point control word to 0x027F (all exceptions masked,double-precision, round-to-nearest) and multimedia-extensions control word (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero for masked underflow).

Definition at line 20 of file X86BaseCpuLibNull.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.