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>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/** @file
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Public header file for UEFI CPU library class.
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This library class defines some routines that are generic for IA32 family CPU
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to be UEFI specification compliant.
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Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2020, AMD Inc. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __UEFI_CPU_LIB_H__
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#define __UEFI_CPU_LIB_H__
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/**
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Initializes floating point units for requirement of UEFI specification.
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This function initializes floating-point control word to 0x027F (all exceptions
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masked,double-precision, round-to-nearest) and multimedia-extensions control word
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(if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero
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for masked underflow).
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**/
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VOID
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EFIAPI
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InitializeFloatingPointUnits (
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VOID
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);
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/**
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Determine if the standard CPU signature is "AuthenticAMD".
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@retval TRUE The CPU signature matches.
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@retval FALSE The CPU signature does not match.
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**/
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BOOLEAN
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EFIAPI
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StandardSignatureIsAuthenticAMD (
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VOID
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);
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#endif
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