df667535ed
Refactor StandardSignatureIsAuthenticAMD into BaseUefiCpuLib from separate copies in BaseXApicLib, BaseXApicX2ApicLib, and MpInitLib. This allows for future use of StandarSignatureIsAuthinticAMD without creating more instances in other modules. This function allows IA32/X64 code to determine if it is running on an AMD brand processor. UefiCpuLib is already included directly or indirectly in all modified modules. Complete move is made in this change. Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Garrett Kirkendall <garrett.kirkendall@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Message-Id: <20200622131825.1352-4-Garrett.Kirkendall@amd.com>
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);
|
|
}
|