projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a63a425 | 1 | ## @file\r |
| 034307a7 SZ |
2 | # Base Timer Library which uses the Time Stamp Counter in the processor.\r |
| 3 | #\r | |
| 4 | # Note: There will be 1ms penalty to get TSC frequency every time\r | |
| 5 | # by waiting for 3579 clocks of the ACPI timer, or 1ms.\r | |
| c06ad33e | 6 | #\r |
| c1589a2c LG |
7 | # Note: This library is a sample implementation that depends on chipset ACPI timer. \r |
| 8 | # It may not work on new generation chipset. PcAtChipsetPkg AcpiTimerLib is \r | |
| 9 | # the generic timer library that can replace this one. \r | |
| 10 | #\r | |
| c06ad33e | 11 | # A version of the Timer Library using the processor's TSC.\r |
| 12 | # The time stamp counter in newer processors may support an enhancement, referred to as invariant TSC.\r | |
| 13 | # The invariant TSC runs at a constant rate in all ACPI P-, C-. and T-states.\r | |
| 14 | # This is the architectural behavior moving forward.\r | |
| 15 | # TSC reads are much more efficient and do not incur the overhead associated with a ring transition or\r | |
| 16 | # access to a platform resource.\r | |
| 17 | #\r | |
| e8a61b96 | 18 | # Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r |
| c06ad33e | 19 | # This program and the accompanying materials\r |
| 20 | # are licensed and made available under the terms and conditions of the BSD License\r | |
| 21 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 22 | # http://opensource.org/licenses/bsd-license.php\r | |
| 23 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 24 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 25 | #\r | |
| 3a63a425 | 26 | ##\r |
| c06ad33e | 27 | \r |
| 28 | [Defines]\r | |
| 29 | INF_VERSION = 0x00010005\r | |
| 034307a7 SZ |
30 | BASE_NAME = BaseTscTimerLib\r |
| 31 | FILE_GUID = D29338B9-50FE-4e4f-B7D4-A150A2C1F4FB\r | |
| 32 | MODULE_TYPE = BASE\r | |
| c06ad33e | 33 | VERSION_STRING = 1.0\r |
| 034307a7 | 34 | LIBRARY_CLASS = TimerLib\r |
| c06ad33e | 35 | \r |
| 36 | \r | |
| 37 | #\r | |
| 38 | # VALID_ARCHITECTURES = IA32 X64\r | |
| 39 | #\r | |
| 40 | \r | |
| 41 | [Sources.common]\r | |
| 034307a7 SZ |
42 | TscTimerLibShare.c\r |
| 43 | BaseTscTimerLib.c\r | |
| 77c9e747 | 44 | TscTimerLibInternal.h\r |
| c06ad33e | 45 | \r |
| 46 | \r | |
| 47 | [Packages]\r | |
| 48 | MdePkg/MdePkg.dec\r | |
| 49 | PerformancePkg/PerformancePkg.dec\r | |
| 50 | \r | |
| 51 | \r | |
| 52 | [LibraryClasses]\r | |
| 53 | PcdLib\r | |
| 54 | PciLib\r | |
| 55 | IoLib\r | |
| 56 | BaseLib\r | |
| 57 | \r | |
| 58 | [Pcd.common]\r | |
| e8a61b96 | 59 | gPerformancePkgTokenSpaceGuid.PcdPerfPkgAcpiIoPortBaseAddress ## SOMETIMES_CONSUMES\r |