MdeModulePkg/Universal/FaultTolerantWritePei/FaultTolerantWritePei.inf\r
MdeModulePkg/Universal/Variable/Pei/VariablePei.inf\r
MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf\r
+ MdeModulePkg/Universal/TimestampDxe/TimestampDxe.inf\r
MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf\r
MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.inf\r
\r
--- /dev/null
+/** @file\r
+ Implementation of Timestamp Protocol using UEFI APIs.\r
+ \r
+Copyright (c) 2013, 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
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <Uefi.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/TimerLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Protocol/Timestamp.h>\r
+\r
+//\r
+// The StartValue in TimerLib\r
+//\r
+UINT64 mTimerLibStartValue = 0;\r
+\r
+//\r
+// The EndValue in TimerLib\r
+//\r
+UINT64 mTimerLibEndValue = 0;\r
+\r
+//\r
+// The properties of timestamp\r
+//\r
+EFI_TIMESTAMP_PROPERTIES mTimestampProperties = {\r
+ 0,\r
+ 0\r
+};\r
+\r
+/**\r
+ Retrieves the current value of a 64-bit free running timestamp counter.\r
+\r
+ The counter shall count up in proportion to the amount of time that has passed. The counter value\r
+ will always roll over to zero. The properties of the counter can be retrieved from GetProperties().\r
+ The caller should be prepared for the function to return the same value twice across successive calls.\r
+ The counter value will not go backwards other than when wrapping, as defined by EndValue in GetProperties().\r
+ The frequency of the returned timestamp counter value must remain constant. Power management operations that \r
+ affect clocking must not change the returned counter frequency. The quantization of counter value updates may \r
+ vary as long as the value reflecting time passed remains consistent. \r
+\r
+ @retval The current value of the free running timestamp counter.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+TimestampDriverGetTimestamp (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // The timestamp of Timestamp Protocol\r
+ //\r
+ UINT64 TimestampValue;\r
+ TimestampValue = 0;\r
+ \r
+ //\r
+ // Get the timestamp\r
+ //\r
+ if (mTimerLibStartValue > mTimerLibEndValue) {\r
+ TimestampValue = mTimerLibStartValue - GetPerformanceCounter();\r
+ } else {\r
+ TimestampValue = GetPerformanceCounter() - mTimerLibStartValue;\r
+ }\r
+ \r
+ return TimestampValue;\r
+}\r
+\r
+/**\r
+ Obtains timestamp counter properties including frequency and value limits.\r
+\r
+ @param[out] Properties The properties of the timestamp counter.\r
+\r
+ @retval EFI_SUCCESS The properties were successfully retrieved. \r
+ @retval EFI_DEVICE_ERROR An error occurred trying to retrieve the properties of the timestamp \r
+ counter subsystem. Properties is not pedated. \r
+ @retval EFI_INVALID_PARAMETER Properties is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimestampDriverGetProperties(\r
+ OUT EFI_TIMESTAMP_PROPERTIES *Properties\r
+ )\r
+{\r
+ if (Properties == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ \r
+ //\r
+ // Get timestamp properties\r
+ //\r
+ CopyMem((VOID *) Properties, (VOID *) &mTimestampProperties, sizeof (mTimestampProperties));\r
+ \r
+ return EFI_SUCCESS;\r
+}\r
+\r
+//\r
+// The Timestamp Protocol instance produced by this driver\r
+//\r
+EFI_TIMESTAMP_PROTOCOL mTimestamp = {\r
+ TimestampDriverGetTimestamp,\r
+ TimestampDriverGetProperties\r
+};\r
+\r
+/**\r
+ Entry point of the Timestamp Protocol driver.\r
+\r
+ @param ImageHandle The image handle of this driver.\r
+ @param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
+\r
+ @retval EFI_SUCCESS Watchdog Timer Architectural Protocol successfully installed.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimestampDriverInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ \r
+ EFI_HANDLE TimestampHandle;\r
+ TimestampHandle = NULL;\r
+ \r
+ //\r
+ // Get the start value, end value and frequency in Timerlib\r
+ //\r
+ mTimestampProperties.Frequency = GetPerformanceCounterProperties(&mTimerLibStartValue, &mTimerLibEndValue);\r
+ \r
+ //\r
+ // Set the EndValue \r
+ //\r
+ if (mTimerLibEndValue > mTimerLibStartValue) {\r
+ mTimestampProperties.EndValue = mTimerLibEndValue - mTimerLibStartValue;\r
+ } else {\r
+ mTimestampProperties.EndValue = mTimerLibStartValue - mTimerLibEndValue;\r
+ }\r
+ \r
+ DEBUG ((EFI_D_INFO, "TimerFrequency:0x%lx, TimerLibStartTime:0x%lx, TimerLibEndtime:0x%lx\n", mTimestampProperties.Frequency, mTimerLibStartValue, mTimerLibEndValue));\r
+ \r
+ //\r
+ // Install the Timestamp Protocol onto a new handle\r
+ //\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &TimestampHandle,\r
+ &gEfiTimestampProtocolGuid,\r
+ &mTimestamp,\r
+ NULL\r
+ );\r
+ \r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return EFI_SUCCESS;\r
+}\r
--- /dev/null
+## @file\r
+# Generic Timestamp driver produceing Timestamp Protocol using UEFI APIs.\r
+#\r
+# Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>\r
+#\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
+# http://opensource.org/licenses/bsd-license.php\r
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+#\r
+#\r
+##\r
+\r
+[Defines]\r
+ INF_VERSION = 0x00010005\r
+ BASE_NAME = TimestampDxe\r
+ FILE_GUID = C10194E7-DEB2-4AF4-9EEE-BFFDE4D7D4C7\r
+ MODULE_TYPE = DXE_DRIVER\r
+ VERSION_STRING = 1.0\r
+ ENTRY_POINT = TimestampDriverInitialize\r
+\r
+#\r
+# The following information is for reference only and not required by the build tools.\r
+#\r
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC\r
+#\r
+\r
+[Packages]\r
+ MdePkg/MdePkg.dec\r
+\r
+[Sources]\r
+ TimestampDxe.c \r
+\r
+[LibraryClasses]\r
+ UefiBootServicesTableLib\r
+ UefiDriverEntryPoint\r
+ TimerLib\r
+ BaseMemoryLib\r
+ DebugLib\r
+\r
+[Protocols]\r
+ gEfiTimestampProtocolGuid ## PRODUCES\r
+\r
+[depex]\r
+ TRUE\r
+\r
+ \r
--- /dev/null
+/** @file\r
+ EFI Timestamp Protocol as defined in UEFI2.4 Specification. \r
+ Used to provide a platform independent interface for retrieving a high resolution timestamp counter.\r
+ \r
+ Copyright (c) 2013, 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
+ http://opensource.org/licenses/bsd-license.php \r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+ \r
+ @par Revision Reference: \r
+ This Protocol is introduced in UEFI Specification 2.4 \r
+ \r
+**/\r
+\r
+#ifndef __EFI_TIME_STAMP_PROTOCOL_H__\r
+#define __EFI_TIME_STAMP_PROTOCOL_H__\r
+\r
+\r
+#define EFI_TIMESTAMP_PROTOCOL_GUID \\r
+ { 0xafbfde41, 0x2e6e, 0x4262, {0xba, 0x65, 0x62, 0xb9, 0x23, 0x6e, 0x54, 0x95 } }\r
+\r
+///\r
+/// Declare forward reference for the Time Stamp Protocol\r
+///\r
+typedef struct _EFI_TIMESTAMP_PROTOCOL EFI_TIMESTAMP_PROTOCOL;\r
+\r
+///\r
+/// EFI_TIMESTAMP_PROPERTIES\r
+///\r
+typedef struct {\r
+ /// \r
+ /// The frequency of the timestamp counter in Hz.\r
+ /// \r
+ UINT64 Frequency;\r
+ /// \r
+ /// The value that the timestamp counter ends with immediately before it rolls over.\r
+ /// For example, a 64-bit free running counter would have an EndValue of 0xFFFFFFFFFFFFFFFF.\r
+ /// A 24-bit free running counter would have an EndValue of 0xFFFFFF.\r
+ ///\r
+ UINT64 EndValue;\r
+} EFI_TIMESTAMP_PROPERTIES;\r
+ \r
+/**\r
+ Retrieves the current value of a 64-bit free running timestamp counter.\r
+ \r
+ The counter shall count up in proportion to the amount of time that has passed. The counter value\r
+ will always roll over to zero. The properties of the counter can be retrieved from GetProperties().\r
+ The caller should be prepared for the function to return the same value twice across successive calls.\r
+ The counter value will not go backwards other than when wrapping, as defined by EndValue in GetProperties().\r
+ The frequency of the returned timestamp counter value must remain constant. Power management operations that \r
+ affect clocking must not change the returned counter frequency. The quantization of counter value updates may \r
+ vary as long as the value reflecting time passed remains consistent.\r
+\r
+ @param None. \r
+\r
+ @retval The current value of the free running timestamp counter.\r
+\r
+**/\r
+typedef\r
+UINT64\r
+(EFIAPI *TIMESTAMP_GET)(\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Obtains timestamp counter properties including frequency and value limits.\r
+\r
+ @param[out] Properties The properties of the timestamp counter.\r
+\r
+ @retval EFI_SUCCESS The properties were successfully retrieved. \r
+ @retval EFI_DEVICE_ERROR An error occurred trying to retrieve the properties of the timestamp \r
+ counter subsystem. Properties is not pedated. \r
+ @retval EFI_INVALID_PARAMETER Properties is NULL.\r
+\r
+**/\r
+typedef \r
+EFI_STATUS\r
+(EFIAPI *TIMESTAMP_GET_PROPERTIES)(\r
+ OUT EFI_TIMESTAMP_PROPERTIES *Properties\r
+ );\r
+\r
+\r
+\r
+///\r
+/// EFI_TIMESTAMP_PROTOCOL\r
+/// The protocol provides a platform independent interface for retrieving a high resolution \r
+/// timestamp counter.\r
+///\r
+struct _EFI_TIMESTAMP_PROTOCOL {\r
+ TIMESTAMP_GET GetTimestamp;\r
+ TIMESTAMP_GET_PROPERTIES GetProperties;\r
+};\r
+\r
+extern EFI_GUID gEfiTimestampProtocolGuid;\r
+\r
+#endif\r
+\r
## Include/Protocol/DiskIo2.h\r
gEfiDiskIo2ProtocolGuid = { 0x151c8eae, 0x7f2c, 0x472c, { 0x9e, 0x54, 0x98, 0x28, 0x19, 0x4f, 0x6a, 0x88 }}\r
\r
+ ## Include/Protocol/Timestamp.h\r
+ gEfiTimestampProtocolGuid = { 0xafbfde41, 0x2e6e, 0x4262, {0xba, 0x65, 0x62, 0xb9, 0x23, 0x6e, 0x54, 0x95 }}\r
+\r
[PcdsFeatureFlag]\r
## If TRUE, the component name protocol will not be installed.\r
gEfiMdePkgTokenSpaceGuid.PcdComponentNameDisable|FALSE|BOOLEAN|0x0000000d\r
projects / mirror_edk2.git / commitdiff