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## @file
# Base Timer Library which uses the Time Stamp Counter in the processor.
#
# Note: There will be 1ms penalty to get TSC frequency every time
# by waiting for 3579 clocks of the ACPI timer, or 1ms.
#
# Note: This library is a sample implementation that depends on chipset ACPI timer.
# It may not work on new generation chipset. PcAtChipsetPkg AcpiTimerLib is
# the generic timer library that can replace this one.
#
# A version of the Timer Library using the processor's TSC.
# The time stamp counter in newer processors may support an enhancement, referred to as invariant TSC.
# The invariant TSC runs at a constant rate in all ACPI P-, C-. and T-states.
# This is the architectural behavior moving forward.
# TSC reads are much more efficient and do not incur the overhead associated with a ring transition or
# access to a platform resource.
#
# Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = BaseTscTimerLib
FILE_GUID = D29338B9-50FE-4e4f-B7D4-A150A2C1F4FB
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = TimerLib
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources.common]
TscTimerLibShare.c
BaseTscTimerLib.c
TscTimerLibInternal.h
[Packages]
MdePkg/MdePkg.dec
PerformancePkg/PerformancePkg.dec
[LibraryClasses]
PcdLib
PciLib
IoLib
BaseLib
[Pcd.common]
gPerformancePkgTokenSpaceGuid.PcdPerfPkgAcpiIoPortBaseAddress
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