mirror of https://github.com/acidanthera/audk.git
39 lines
936 B
C
39 lines
936 B
C
/** @file
|
|
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.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include <Register/Intel/Cpuid.h>
|
|
#include <Register/Amd/Cpuid.h>
|
|
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/UefiCpuLib.h>
|
|
|
|
/**
|
|
Determine if the standard CPU signature is "AuthenticAMD".
|
|
|
|
@retval TRUE The CPU signature matches.
|
|
@retval FALSE The CPU signature does not match.
|
|
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
StandardSignatureIsAuthenticAMD (
|
|
VOID
|
|
)
|
|
{
|
|
UINT32 RegEbx;
|
|
UINT32 RegEcx;
|
|
UINT32 RegEdx;
|
|
|
|
AsmCpuid (CPUID_SIGNATURE, NULL, &RegEbx, &RegEcx, &RegEdx);
|
|
return (RegEbx == CPUID_SIGNATURE_AUTHENTIC_AMD_EBX &&
|
|
RegEcx == CPUID_SIGNATURE_AUTHENTIC_AMD_ECX &&
|
|
RegEdx == CPUID_SIGNATURE_AUTHENTIC_AMD_EDX);
|
|
}
|