Tianocore/edk2.git/PcAtChipsetPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.c, branch master

PcAtChipsetPkg: AcpiTimerLib: Added StandaloneMm instance of AcpiTimerLib

2021-02-01T18:03:35+00:00

This change added a new instance of AcpiTimerLib for StandaloneMm core and drivers. It centralizes the common routines into shared files and abstract the library constructor into corresponding files to accommodate each constructor function prototypes. Cc: Ray Ni Signed-off-by: Kun Qin Reviewed-by: Ray Ni

PcAtChipsetPkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:20+00:00

https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney Reviewed-by: Ray Ni

PcAtChipsetPkg: Clean up source files

2018-06-28T03:19:49+00:00

1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao Reviewed-by: Ruiyu Ni

PcAtChipsetPkg: Add PeiAcpiTimerLib to save Frequency in HOB

2018-02-06T05:37:01+00:00

In V2: 1) Update PeiAcpiTimerLib base name to PeiAcpiTimerLib 2) Update PeiAcpiTimerLib to add the missing constructor to enable ACPI IO space 3) Update DxeAcpiTimerLib to cache frequency in constructor. PeiAcpiTimerLib caches PerformanceCounterFrequency in HOB, then Pei and Dxe AcpiTimerLib can share the same PerformanceCounterFrequency. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao Cc: Star Zeng Reviewed-by: Star Zeng

PcAtChipsetPkg AcpiTimerLib: Wait 363 ACPI timer counts to get TSC Freq

2016-08-18T03:01:54+00:00

Compute the number of ticks to wait to measure TSC frequency. Instead of (ACPI_TIMER_FREQUENCY / 10000) = 357 and 357 * 10000 = 3570000, use 363 * 9861 = 3579543 Hz which is within 2 Hz of ACPI_TIMER_FREQUENCY. 363 counts is a calibration time of 101.4 uS. The idea comes from Michael and Paolo. Cc: Michael D Kinney Cc: Liming Gao Cc: Paolo Bonzini Cc: Paul A Lohr Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng Reviewed-by: Paolo Bonzini Reviewed-by: Michael D Kinney

PcAtChipsetPkg AcpiTimerLib: Get more accurate TSC Frequency

2016-08-12T07:42:44+00:00

Minimize the code overhead between the two TSC reads by adding new internal API to calculate TSC Frequency instead of reusing MicroSecondDelay (). Cc: Michael D Kinney Cc: Liming Gao Cc: Paul A Lohr Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng Reviewed-by: Liming Gao Reviewed-by: Michael D Kinney

PcAtChipsetPkg: new AcpiTimerLib libraries.

2014-08-14T14:30:32+00:00

Two library instances are added to support BASE type and DXE type. Those libraries provides basic timer support using the ACPI timer hardware. The performance counter features are provided by the processors time stamp counter. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Gao, Liming Reviewed-by: Kinney, Michael D git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15803 6f19259b-4bc3-4df7-8a09-765794883524