PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf

   1 ## @file
   2 #  Base Timer Library which uses the Time Stamp Counter in the processor.
   3 #
   4 #  Note: There will be 1ms penalty to get TSC frequency every time
   5 #    by waiting for 3579 clocks of the ACPI timer, or 1ms.
   6 #
   7 #  Note: This library is a sample implementation that depends on chipset ACPI timer.
   8 #    It may not work on new generation chipset. PcAtChipsetPkg AcpiTimerLib is
   9 #    the generic timer library that can replace this one.
  10 #
  11 #  A version of the Timer Library using the processor's TSC.
  12 #  The time stamp counter in newer processors may support an enhancement, referred to as invariant TSC.
  13 #  The invariant TSC runs at a constant rate in all ACPI P-, C-. and T-states.
  14 #  This is the architectural behavior moving forward.
  15 #  TSC reads are much more efficient and do not incur the overhead associated with a ring transition or
  16 #  access to a platform resource.
  17 #
  18 #  Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
  19 #  This program and the accompanying materials
  20 #  are licensed and made available under the terms and conditions of the BSD License
  21 #  which accompanies this distribution. The full text of the license may be found at
  22 #  http://opensource.org/licenses/bsd-license.php
  23 #  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  24 #  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  25 #
  26 ##
  27
  28 [Defines]
  29   INF_VERSION                    = 0x00010005
  30   BASE_NAME                      = BaseTscTimerLib
  31   FILE_GUID                      = D29338B9-50FE-4e4f-B7D4-A150A2C1F4FB
  32   MODULE_TYPE                    = BASE
  33   VERSION_STRING                 = 1.0
  34   LIBRARY_CLASS                  = TimerLib
  35
  36
  37 #
  38 #  VALID_ARCHITECTURES           = IA32 X64
  39 #
  40
  41 [Sources.common]
  42   TscTimerLibShare.c
  43   BaseTscTimerLib.c
  44   TscTimerLibInternal.h
  45
  46
  47 [Packages]
  48   MdePkg/MdePkg.dec
  49   PerformancePkg/PerformancePkg.dec
  50
  51
  52 [LibraryClasses]
  53   PcdLib
  54   PciLib
  55   IoLib
  56   BaseLib
  57
  58 [Pcd.common]
  59   gPerformancePkgTokenSpaceGuid.PcdPerfPkgAcpiIoPortBaseAddress       ## SOMETIMES_CONSUMES