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PcAtChipsetPkg: Update BaseAcpiTimerLib

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Introduce new PcdAcpiIoPortBaseAddressMask to mask BITS ACPI IO Port Base Address.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16952 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Liming Gao
2015-02-28 05:34:38 +00:00
committed by lgao4
parent 16b6347b30
commit 9ff926d6d7
5 changed files with 12 additions and 6 deletions
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8
PcAtChipsetPkg/Library/AcpiTimerLib/AcpiTimerLib.c
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@@ -1,7 +1,7 @@
/** @file
ACPI Timer implements one instance of Timer Library.
Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2013 - 2015, 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
@@ -118,11 +118,11 @@ InternalAcpiGetAcpiTimerIoPort (
{
UINT16 Port;
Port = PcdGet16 (PcdAcpiIoPciBarRegisterOffset);
Port = PcdGet16 (PcdAcpiIoPortBaseAddress);
//
// If the register offset to the BAR for the ACPI I/O Port Base Address is not 0x0000, then
// read the PCI register for the APCI BAR value in case the BAR has been programmed to a
// read the PCI register for the ACPI BAR value in case the BAR has been programmed to a
// value other than PcdAcpiIoPortBaseAddress
//
if (PcdGet16 (PcdAcpiIoPciBarRegisterOffset) != 0x0000) {
@@ -134,7 +134,7 @@ InternalAcpiGetAcpiTimerIoPort (
));
}
return (Port & ~BIT0) + PcdGet16 (PcdAcpiPm1TmrOffset);
return (Port & PcdGet16 (PcdAcpiIoPortBaseAddressMask)) + PcdGet16 (PcdAcpiPm1TmrOffset);
}
/**