diff options
| author | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-10-30 13:14:44 +0000 |
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| committer | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-10-30 13:14:44 +0000 |
| commit | 034307a7ec57dd87b83b14e2c706b3e7c2d302c5 (patch) | |
| tree | 67c3de8cd04574fa7fa86fed925f6c5be792de65 /PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf | |
| parent | b3c30cb37fd066e3c719ef819704ad7f65e10630 (diff) | |
| download | edk2-platforms-034307a7ec57dd87b83b14e2c706b3e7c2d302c5.tar.xz | |
Add BaseTscTimerLib, and then merge the three TscTimerLib to one directory.
Signed-off-by: lzeng14
Reviewed-by: lgao4
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12604 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf')
| -rw-r--r-- | PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf b/PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf new file mode 100644 index 0000000000..2c33b7702e --- /dev/null +++ b/PerformancePkg/Library/TscTimerLib/BaseTscTimerLib.inf @@ -0,0 +1,54 @@ +## @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.
+#
+# 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 - 2011, 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
+
+
+[Packages]
+ MdePkg/MdePkg.dec
+ PerformancePkg/PerformancePkg.dec
+
+
+[LibraryClasses]
+ PcdLib
+ PciLib
+ IoLib
+ BaseLib
+
+[Pcd.common]
+ gPerformancePkgTokenSpaceGuid.PcdPerfPkgAcpiIoPortBaseAddress
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