audk/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf

38 lines
1.1 KiB
INI
Raw Normal View History

OvmfPkg: AcpiTimerLib: Split into multiple phase-specific instances Remove local power management register access macros in favor of factored-out ones in OvmfPkg/Include/OvmfPlatforms.h Next, AcpiTimerLib is split out into three instances, for use during various stages: - BaseRom: used during SEC, PEI_CORE, and PEIM; - Dxe: used during DXE_DRIVER and DXE_RUNTIME_DRIVER; - Base: used by default during all other stages. Most of the code remains in AcpiTimerLib.c, to be shared by all instances. The two platform-dependent methods (constructor and InternalAcpiGetTimerTick) are provided separately by source files specific to each instance, namely [BaseRom|Base|Dxe]AcpiTimerLib.c. Since pre-DXE stages can't rely on storing data in global variables, methods specific to the "BaseRom" instance will call platform detection macros each time they're invoked. The "Base" instance calls platform detection macros only from its constructor, and caches the address required by InternalAcpiTimerTick in a global variable. The "Dxe" instance is very similar to "Base", except no platform detection macros are called at all; instead, the platform type is read via a dynamic PCD set from PlatformPei. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16376 6f19259b-4bc3-4df7-8a09-765794883524
2014-11-14 01:38:17 +01:00
## @file
# Base ACPI Timer Library Instance.
#
# Copyright (C) 2014, Gabriel L. Somlo <somlo@cmu.edu>
# Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.
#
# 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 = BaseAcpiTimerLib
FILE_GUID = FB648CF5-91BE-4737-9023-FD807AC6D96D
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = TimerLib|DXE_CORE DXE_SMM_DRIVER UEFI_DRIVER UEFI_APPLICATION SMM_CORE
CONSTRUCTOR = AcpiTimerLibConstructor
[Sources]
AcpiTimerLib.c
BaseAcpiTimerLib.c
[Packages]
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
BaseLib
PciLib
IoLib