PcAtChipsetPkg AcpiTimerLib: Clear bits [31:24] after reading by IoRead32()

[mirror_edk2.git] / PcAtChipsetPkg / Library / AcpiTimerLib / DxeAcpiTimerLib.inf

diff --git a/PcAtChipsetPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf b/PcAtChipsetPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf
index 3446c03eda21ec0dc8eecf24bc5a246e6469e0a5..2c1cc7d33cdbb4c725fe7d88f1ce32f3026bbd1a 100644 (file)
--- a/PcAtChipsetPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf
+++ b/PcAtChipsetPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf
@@ -2,9 +2,12 @@
 #  DXE ACPI Timer Library\r
 #\r
 #  Provides basic timer support using the ACPI timer hardware.  The performance\r
-#  counter features are provided by the processors time stamp counter. \r
+#  counter features are provided by the processors time stamp counter.\r
 #\r
-#  Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>\r
+#  Note: The implementation uses the lower 24-bits of the ACPI timer and\r
+#  is compatible with both 24-bit and 32-bit ACPI timers.\r
+#\r
+#  Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.<BR>\r
 #  This program and the accompanying materials\r
 #  are licensed and made available under the terms and conditions of the BSD License\r
 #  which accompanies this distribution.  The full text of the license may be found at\r
@@ -49,4 +52,4 @@
   gPcAtChipsetPkgTokenSpaceGuid.PcdAcpiIoPciBarRegisterOffset     ## CONSUMES\r
   gPcAtChipsetPkgTokenSpaceGuid.PcdAcpiIoPortBaseAddress          ## CONSUMES\r
   gPcAtChipsetPkgTokenSpaceGuid.PcdAcpiPm1TmrOffset               ## CONSUMES\r
-  gPcAtChipsetPkgTokenSpaceGuid.PcdAcpiIoPortBaseAddressMask      ## CONSUMES
\ No newline at end of file
+  gPcAtChipsetPkgTokenSpaceGuid.PcdAcpiIoPortBaseAddressMask      ## CONSUMES\r