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UefiCpuPkg: Move StandardSignatureIsAuthenticAMD to BaseUefiCpuLib

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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>
This commit is contained in:
Kirkendall, Garrett
2020-06-22 08:18:24 -05:00
committed by mergify[bot]
parent 7da5f343bc
commit df667535ed
8 changed files with 67 additions and 69 deletions
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25
UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
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@@ -4,7 +4,7 @@
This local APIC library instance supports xAPIC mode only.
Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
Copyright (c) 2017 - 2020, AMD Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -21,33 +21,12 @@
#include <Library/IoLib.h>
#include <Library/TimerLib.h>
#include <Library/PcdLib.h>
#include <Library/UefiCpuLib.h>
//
// Library internal functions
//
/**
Determine if the standard CPU signature is "AuthenticAMD".
@retval TRUE The CPU signature matches.
@retval FALSE The CPU signature does not match.
**/
BOOLEAN
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);
}
/**
Determine if the CPU supports the Local APIC Base Address MSR.