diff options
| author | David Wei <david.wei@intel.com> | 2015-01-12 09:37:20 +0000 |
|---|---|---|
| committer | zwei4 <zwei4@Edk2> | 2015-01-12 09:37:20 +0000 |
| commit | 3cbfba02fef9dae07a041fdbf2e89611d72d6f90 (patch) | |
| tree | 0b3bf0783124d38a191e09736492c0141aa36c15 /Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib | |
| parent | 6f785cfcc304c48ec04e542ee429df95e7b51bc5 (diff) | |
| download | edk2-platforms-3cbfba02fef9dae07a041fdbf2e89611d72d6f90.tar.xz | |
Upload BSD-licensed Vlv2TbltDevicePkg and Vlv2DeviceRefCodePkg to
https://svn.code.sf.net/p/edk2/code/trunk/edk2/,
which are for MinnowBoard MAX open source project.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: David Wei <david.wei@intel.com>
Reviewed-by: Mike Wu <mike.wu@intel.com>
Reviewed-by: Hot Tian <hot.tian@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16599 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib')
3 files changed, 348 insertions, 0 deletions
diff --git a/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/CommonHeader.h b/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/CommonHeader.h new file mode 100644 index 0000000000..213940e231 --- /dev/null +++ b/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/CommonHeader.h @@ -0,0 +1,32 @@ +/**@file
+ Common header file shared by all source files.
+
+ This file includes package header files, library classes and protocol, PPI & GUID definitions.
+
+ Copyright (c) 2007 - 2014, 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 that 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.
+
+
+**/
+
+#ifndef __COMMON_HEADER_H_
+#define __COMMON_HEADER_H_
+
+
+#include <Base.h>
+#include <PchAccess.h>
+
+#include <Library/TimerLib.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/PciLib.h>
+#include <Library/PcdLib.h>
+
+#endif
diff --git a/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/IntelPchAcpiTimerLib.c b/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/IntelPchAcpiTimerLib.c new file mode 100644 index 0000000000..09c42a4914 --- /dev/null +++ b/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/IntelPchAcpiTimerLib.c @@ -0,0 +1,260 @@ +/** @file
+ ICH9 ACPI Timer implements one instance of Timer Library.
+
+Copyright (c) 2007 - 2014, 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 that 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.
+
+
+**/
+
+#include "CommonHeader.h"
+
+/**
+ The constructor function enables ACPI IO space.
+
+ If ACPI I/O space not enabled, this function will enable it.
+ It will always return RETURN_SUCCESS.
+
+ @retval EFI_SUCCESS The constructor always returns RETURN_SUCCESS.
+
+**/
+RETURN_STATUS
+EFIAPI
+IntelPchAcpiTimerLibConstructor (
+ VOID
+ )
+{
+ if ((PchLpcPciCfg8(R_PCH_LPC_ACPI_BASE) & B_PCH_LPC_ACPI_BASE_EN) == 0) {
+ //
+ // If ACPI I/O space is not enabled, program ACPI I/O base address and enable it.
+ //
+ MmioWrite16 (
+ MmPciAddress (
+ 0,
+ DEFAULT_PCI_BUS_NUMBER_PCH,
+ PCI_DEVICE_NUMBER_PCH_LPC,
+ PCI_FUNCTION_NUMBER_PCH_LPC,
+ R_PCH_LPC_ACPI_BASE
+ ),
+ ((PcdGet16 (PcdPchAcpiIoPortBaseAddress) & B_PCH_LPC_ACPI_BASE_BAR) | B_PCH_LPC_ACPI_BASE_EN)
+ );
+ }
+ return RETURN_SUCCESS;
+}
+
+/**
+ Internal function to read the current tick counter of ACPI.
+
+ Internal function to read the current tick counter of ACPI.
+
+ @return The tick counter read.
+
+**/
+STATIC
+UINT32
+InternalAcpiGetTimerTick (
+ VOID
+ )
+{
+ return IoRead32 (PcdGet16 (PcdPchAcpiIoPortBaseAddress) + R_PCH_ACPI_PM1_TMR);
+}
+
+/**
+ Stalls the CPU for at least the given number of ticks.
+
+ Stalls the CPU for at least the given number of ticks. It's invoked by
+ MicroSecondDelay() and NanoSecondDelay().
+
+ @param Delay A period of time to delay in ticks.
+
+**/
+STATIC
+VOID
+InternalAcpiDelay (
+ IN UINT32 Delay
+ )
+{
+ UINT32 Ticks;
+ UINT32 Times;
+
+ Times = Delay >> 22;
+ Delay &= BIT22 - 1;
+ do {
+ //
+ // The target timer count is calculated here
+ //
+ Ticks = InternalAcpiGetTimerTick () + Delay;
+ Delay = BIT22;
+ //
+ // Wait until time out
+ // Delay >= 2^23 could not be handled by this function
+ // Timer wrap-arounds are handled correctly by this function
+ //
+ while (((Ticks - InternalAcpiGetTimerTick ()) & BIT23) == 0) {
+ CpuPause ();
+ }
+ } while (Times-- > 0);
+}
+
+/**
+ Stalls the CPU for at least the given number of microseconds.
+
+ Stalls the CPU for the number of microseconds specified by MicroSeconds.
+
+ @param MicroSeconds The minimum number of microseconds to delay.
+
+ @return MicroSeconds
+
+**/
+UINTN
+EFIAPI
+MicroSecondDelay (
+ IN UINTN MicroSeconds
+ )
+{
+ InternalAcpiDelay (
+ (UINT32)DivU64x32 (
+ MultU64x32 (
+ MicroSeconds,
+ V_PCH_ACPI_PM1_TMR_FREQUENCY
+ ),
+ 1000000u
+ )
+ );
+ return MicroSeconds;
+}
+
+/**
+ Stalls the CPU for at least the given number of nanoseconds.
+
+ Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
+
+ @param NanoSeconds The minimum number of nanoseconds to delay.
+
+ @return NanoSeconds
+
+**/
+UINTN
+EFIAPI
+NanoSecondDelay (
+ IN UINTN NanoSeconds
+ )
+{
+ InternalAcpiDelay (
+ (UINT32)DivU64x32 (
+ MultU64x32 (
+ NanoSeconds,
+ V_PCH_ACPI_PM1_TMR_FREQUENCY
+ ),
+ 1000000000u
+ )
+ );
+ return NanoSeconds;
+}
+
+/**
+ Retrieves the current value of a 64-bit free running performance counter.
+
+ Retrieves the current value of a 64-bit free running performance counter. The
+ counter can either count up by 1 or count down by 1. If the physical
+ performance counter counts by a larger increment, then the counter values
+ must be translated. The properties of the counter can be retrieved from
+ GetPerformanceCounterProperties().
+
+ @return The current value of the free running performance counter.
+
+**/
+UINT64
+EFIAPI
+GetPerformanceCounter (
+ VOID
+ )
+{
+ return (UINT64)InternalAcpiGetTimerTick ();
+}
+
+/**
+ Retrieves the 64-bit frequency in Hz and the range of performance counter
+ values.
+
+ If StartValue is not NULL, then the value that the performance counter starts
+ with immediately after is it rolls over is returned in StartValue. If
+ EndValue is not NULL, then the value that the performance counter end with
+ immediately before it rolls over is returned in EndValue. The 64-bit
+ frequency of the performance counter in Hz is always returned. If StartValue
+ is less than EndValue, then the performance counter counts up. If StartValue
+ is greater than EndValue, then the performance counter counts down. For
+ example, a 64-bit free running counter that counts up would have a StartValue
+ of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter
+ that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0.
+
+ @param StartValue The value the performance counter starts with when it
+ rolls over.
+ @param EndValue The value that the performance counter ends with before
+ it rolls over.
+
+ @return The frequency in Hz.
+
+**/
+UINT64
+EFIAPI
+GetPerformanceCounterProperties (
+ OUT UINT64 *StartValue, OPTIONAL
+ OUT UINT64 *EndValue OPTIONAL
+ )
+{
+ if (StartValue != NULL) {
+ *StartValue = 0;
+ }
+
+ if (EndValue != NULL) {
+ *EndValue = V_PCH_ACPI_PM1_TMR_MAX_VAL - 1;
+ }
+
+ return V_PCH_ACPI_PM1_TMR_FREQUENCY;
+}
+
+/**
+ Converts elapsed ticks of performance counter to time in nanoseconds.
+
+ This function converts the elapsed ticks of running performance counter to
+ time value in unit of nanoseconds.
+
+ @param Ticks The number of elapsed ticks of running performance counter.
+
+ @return The elapsed time in nanoseconds.
+
+**/
+UINT64
+EFIAPI
+GetTimeInNanoSecond (
+ IN UINT64 Ticks
+ )
+{
+ UINT64 NanoSeconds;
+ UINT32 Remainder;
+
+ //
+ // Ticks
+ // Time = --------- x 1,000,000,000
+ // Frequency
+ //
+ NanoSeconds = MultU64x32 (DivU64x32Remainder (Ticks, V_PCH_ACPI_PM1_TMR_FREQUENCY, &Remainder), 1000000000u);
+
+ //
+ // Frequency < 0x100000000, so Remainder < 0x100000000, then (Remainder * 1,000,000,000)
+ // will not overflow 64-bit.
+ //
+ NanoSeconds += DivU64x32 (MultU64x32 ((UINT64) Remainder, 1000000000u), V_PCH_ACPI_PM1_TMR_FREQUENCY);
+
+ return NanoSeconds;
+}
+
+
diff --git a/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/IntelPchAcpiTimerLib.inf b/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/IntelPchAcpiTimerLib.inf new file mode 100644 index 0000000000..f4fb5abc2c --- /dev/null +++ b/Vlv2TbltDevicePkg/Library/IntelPchAcpiTimerLib/IntelPchAcpiTimerLib.inf @@ -0,0 +1,56 @@ +#/** @file
+# Intel ICH9 Acpi Timer Instance
+#
+# ICH9 Acpi timer implements one instance of Timer Library. Acpi timer cannot be programmed,
+# so it could be used by any types of drivers, including SMM drivers and Runtime drivers.
+# Copyright (c) 2007 - 2014, 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 that 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 = IntelPchAcpiTimerLib
+ FILE_GUID = 0C0AC8C1-E368-4d20-85FE-23EFB3DB094E
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = TimerLib
+ EDK_RELEASE_VERSION = 0x00020000
+ EFI_SPECIFICATION_VERSION = 0x00020000
+
+ CONSTRUCTOR = IntelPchAcpiTimerLibConstructor
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+ IntelPchAcpiTimerLib.c
+ CommonHeader.h
+
+[Packages]
+ MdePkg/MdePkg.dec
+ Vlv2DeviceRefCodePkg/Vlv2DeviceRefCodePkg.dec
+ Vlv2TbltDevicePkg/PlatformPkg.dec
+
+[LibraryClasses]
+ PcdLib
+ PciLib
+ IoLib
+ BaseLib
+
+[Pcd.common]
+ gEfiPchTokenSpaceGuid.PcdPchAcpiIoPortBaseAddress
+ gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
|