MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf\r
UefiCpuPkg/CpuDxe/CpuDxe.inf\r
- OvmfPkg/XenTimerDxe/XenTimerDxe.inf\r
+ OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf\r
OvmfPkg/IncompatiblePciDeviceSupportDxe/IncompatiblePciDeviceSupport.inf\r
OvmfPkg/PciHotPlugInitDxe/PciHotPlugInit.inf\r
MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf {\r
INF MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
INF UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf\r
INF UefiCpuPkg/CpuDxe/CpuDxe.inf\r
-INF OvmfPkg/XenTimerDxe/XenTimerDxe.inf\r
+INF OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf\r
INF OvmfPkg/IncompatiblePciDeviceSupportDxe/IncompatiblePciDeviceSupport.inf\r
INF OvmfPkg/PciHotPlugInitDxe/PciHotPlugInit.inf\r
INF MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf\r
--- /dev/null
+/** @file\r
+ Timer Architectural Protocol as defined in the DXE CIS\r
+\r
+Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2019, Citrix Systems, Inc.\r
+\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include "LocalApicTimerDxe.h"\r
+\r
+//\r
+// The handle onto which the Timer Architectural Protocol will be installed\r
+//\r
+EFI_HANDLE mTimerHandle = NULL;\r
+\r
+//\r
+// The Timer Architectural Protocol that this driver produces\r
+//\r
+EFI_TIMER_ARCH_PROTOCOL mTimer = {\r
+ TimerDriverRegisterHandler,\r
+ TimerDriverSetTimerPeriod,\r
+ TimerDriverGetTimerPeriod,\r
+ TimerDriverGenerateSoftInterrupt\r
+};\r
+\r
+//\r
+// Pointer to the CPU Architectural Protocol instance\r
+//\r
+EFI_CPU_ARCH_PROTOCOL *mCpu;\r
+\r
+//\r
+// The notification function to call on every timer interrupt.\r
+// A bug in the compiler prevents us from initializing this here.\r
+//\r
+EFI_TIMER_NOTIFY mTimerNotifyFunction;\r
+\r
+//\r
+// The current period of the timer interrupt\r
+//\r
+volatile UINT64 mTimerPeriod = 0;\r
+\r
+//\r
+// Worker Functions\r
+//\r
+\r
+/**\r
+ Interrupt Handler.\r
+\r
+ @param InterruptType The type of interrupt that occurred\r
+ @param SystemContext A pointer to the system context when the interrupt occurred\r
+**/\r
+VOID\r
+EFIAPI\r
+TimerInterruptHandler (\r
+ IN EFI_EXCEPTION_TYPE InterruptType,\r
+ IN EFI_SYSTEM_CONTEXT SystemContext\r
+ )\r
+{\r
+ EFI_TPL OriginalTPL;\r
+\r
+ OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
+\r
+ if (mTimerNotifyFunction != NULL) {\r
+ //\r
+ // @bug : This does not handle missed timer interrupts\r
+ //\r
+ mTimerNotifyFunction (mTimerPeriod);\r
+ }\r
+\r
+ gBS->RestoreTPL (OriginalTPL);\r
+\r
+ DisableInterrupts ();\r
+ SendApicEoi ();\r
+}\r
+\r
+/**\r
+\r
+ This function registers the handler NotifyFunction so it is called every time\r
+ the timer interrupt fires. It also passes the amount of time since the last\r
+ handler call to the NotifyFunction. If NotifyFunction is NULL, then the\r
+ handler is unregistered. If the handler is registered, then EFI_SUCCESS is\r
+ returned. If the CPU does not support registering a timer interrupt handler,\r
+ then EFI_UNSUPPORTED is returned. If an attempt is made to register a handler\r
+ when a handler is already registered, then EFI_ALREADY_STARTED is returned.\r
+ If an attempt is made to unregister a handler when a handler is not registered,\r
+ then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to\r
+ register the NotifyFunction with the timer interrupt, then EFI_DEVICE_ERROR\r
+ is returned.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+ @param NotifyFunction The function to call when a timer interrupt fires. This\r
+ function executes at TPL_HIGH_LEVEL. The DXE Core will\r
+ register a handler for the timer interrupt, so it can know\r
+ how much time has passed. This information is used to\r
+ signal timer based events. NULL will unregister the handler.\r
+\r
+ @retval EFI_SUCCESS The timer handler was registered.\r
+ @retval EFI_UNSUPPORTED The platform does not support timer interrupts.\r
+ @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already\r
+ registered.\r
+ @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not\r
+ previously registered.\r
+ @retval EFI_DEVICE_ERROR The timer handler could not be registered.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverRegisterHandler (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This,\r
+ IN EFI_TIMER_NOTIFY NotifyFunction\r
+ )\r
+{\r
+ //\r
+ // Check for invalid parameters\r
+ //\r
+ if ((NotifyFunction == NULL) && (mTimerNotifyFunction == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if ((NotifyFunction != NULL) && (mTimerNotifyFunction != NULL)) {\r
+ return EFI_ALREADY_STARTED;\r
+ }\r
+\r
+ mTimerNotifyFunction = NotifyFunction;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+\r
+ This function adjusts the period of timer interrupts to the value specified\r
+ by TimerPeriod. If the timer period is updated, then the selected timer\r
+ period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If\r
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.\r
+ If an error occurs while attempting to update the timer period, then the\r
+ timer hardware will be put back in its state prior to this call, and\r
+ EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt\r
+ is disabled. This is not the same as disabling the CPU's interrupts.\r
+ Instead, it must either turn off the timer hardware, or it must adjust the\r
+ interrupt controller so that a CPU interrupt is not generated when the timer\r
+ interrupt fires.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+ @param TimerPeriod The rate to program the timer interrupt in 100 nS units. If\r
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is\r
+ returned. If the timer is programmable, then the timer period\r
+ will be rounded up to the nearest timer period that is supported\r
+ by the timer hardware. If TimerPeriod is set to 0, then the\r
+ timer interrupts will be disabled.\r
+\r
+ @retval EFI_SUCCESS The timer period was changed.\r
+ @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.\r
+ @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverSetTimerPeriod (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This,\r
+ IN UINT64 TimerPeriod\r
+ )\r
+{\r
+ UINT64 TimerCount;\r
+ UINT32 TimerFrequency;\r
+ UINT32 DivideValue = 1;\r
+\r
+ if (TimerPeriod == 0) {\r
+ //\r
+ // Disable timer interrupt for a TimerPeriod of 0\r
+ //\r
+ DisableApicTimerInterrupt ();\r
+ } else {\r
+ TimerFrequency = PcdGet32 (PcdFSBClock) / DivideValue;\r
+\r
+ //\r
+ // Convert TimerPeriod into local APIC counts\r
+ //\r
+ // TimerPeriod is in 100ns\r
+ // TimerPeriod/10000000 will be in seconds.\r
+ TimerCount = DivU64x32 (\r
+ MultU64x32 (TimerPeriod, TimerFrequency),\r
+ 10000000\r
+ );\r
+\r
+ // Check for overflow\r
+ if (TimerCount > MAX_UINT32) {\r
+ TimerCount = MAX_UINT32;\r
+ /* TimerPeriod = (MAX_UINT32 / TimerFrequency) * 10000000; */\r
+ TimerPeriod = 429496730;\r
+ }\r
+\r
+ //\r
+ // Program the timer with the new count value\r
+ //\r
+ InitializeApicTimer (DivideValue, (UINT32)TimerCount, TRUE, LOCAL_APIC_TIMER_VECTOR);\r
+\r
+ //\r
+ // Enable timer interrupt\r
+ //\r
+ EnableApicTimerInterrupt ();\r
+ }\r
+\r
+ //\r
+ // Save the new timer period\r
+ //\r
+ mTimerPeriod = TimerPeriod;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+\r
+ This function retrieves the period of timer interrupts in 100 ns units,\r
+ returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod\r
+ is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is\r
+ returned, then the timer is currently disabled.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+ @param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If\r
+ 0 is returned, then the timer is currently disabled.\r
+\r
+ @retval EFI_SUCCESS The timer period was returned in TimerPeriod.\r
+ @retval EFI_INVALID_PARAMETER TimerPeriod is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverGetTimerPeriod (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This,\r
+ OUT UINT64 *TimerPeriod\r
+ )\r
+{\r
+ if (TimerPeriod == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ *TimerPeriod = mTimerPeriod;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+\r
+ This function generates a soft timer interrupt. If the platform does not support soft\r
+ timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned.\r
+ If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler()\r
+ service, then a soft timer interrupt will be generated. If the timer interrupt is\r
+ enabled when this service is called, then the registered handler will be invoked. The\r
+ registered handler should not be able to distinguish a hardware-generated timer\r
+ interrupt from a software-generated timer interrupt.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+\r
+ @retval EFI_SUCCESS The soft timer interrupt was generated.\r
+ @retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverGenerateSoftInterrupt (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This\r
+ )\r
+{\r
+ EFI_TPL OriginalTPL;\r
+\r
+ if (GetApicTimerInterruptState ()) {\r
+ //\r
+ // Invoke the registered handler\r
+ //\r
+ OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
+\r
+ if (mTimerNotifyFunction != NULL) {\r
+ //\r
+ // @bug : This does not handle missed timer interrupts\r
+ //\r
+ mTimerNotifyFunction (mTimerPeriod);\r
+ }\r
+\r
+ gBS->RestoreTPL (OriginalTPL);\r
+ } else {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Initialize the Timer Architectural Protocol driver\r
+\r
+ @param ImageHandle ImageHandle of the loaded driver\r
+ @param SystemTable Pointer to the System Table\r
+\r
+ @retval EFI_SUCCESS Timer Architectural Protocol created\r
+ @retval EFI_OUT_OF_RESOURCES Not enough resources available to initialize driver.\r
+ @retval EFI_DEVICE_ERROR A device error occurred attempting to initialize the driver.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Initialize the pointer to our notify function.\r
+ //\r
+ mTimerNotifyFunction = NULL;\r
+\r
+ //\r
+ // Make sure the Timer Architectural Protocol is not already installed in the system\r
+ //\r
+ ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiTimerArchProtocolGuid);\r
+\r
+ //\r
+ // Find the CPU architectural protocol.\r
+ //\r
+ Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&mCpu);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Force the timer to be disabled\r
+ //\r
+ Status = TimerDriverSetTimerPeriod (&mTimer, 0);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Install interrupt handler for Local APIC Timer\r
+ //\r
+ Status = mCpu->RegisterInterruptHandler (\r
+ mCpu,\r
+ LOCAL_APIC_TIMER_VECTOR,\r
+ TimerInterruptHandler\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Force the timer to be enabled at its default period\r
+ //\r
+ Status = TimerDriverSetTimerPeriod (&mTimer, DEFAULT_TIMER_TICK_DURATION);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Install the Timer Architectural Protocol onto a new handle\r
+ //\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &mTimerHandle,\r
+ &gEfiTimerArchProtocolGuid,\r
+ &mTimer,\r
+ NULL\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return Status;\r
+}\r
--- /dev/null
+/** @file\r
+ Private data structures\r
+\r
+Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2019, Citrix Systems, Inc.\r
+\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
+**/\r
+\r
+#ifndef LOCAL_APIC_TIMER_H_\r
+#define LOCAL_APIC_TIMER_H_\r
+\r
+#include <PiDxe.h>\r
+\r
+#include <Protocol/Cpu.h>\r
+#include <Protocol/Timer.h>\r
+\r
+#include <Register/LocalApic.h>\r
+\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/BaseLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/LocalApicLib.h>\r
+#include <Library/PcdLib.h>\r
+\r
+// The default timer tick duration is set to 10 ms = 100000 100 ns units\r
+//\r
+#define DEFAULT_TIMER_TICK_DURATION 100000\r
+\r
+//\r
+// The Timer Vector use for interrupt\r
+//\r
+#define LOCAL_APIC_TIMER_VECTOR 32\r
+\r
+//\r
+// Function Prototypes\r
+//\r
+\r
+/**\r
+ Initialize the Timer Architectural Protocol driver\r
+\r
+ @param ImageHandle ImageHandle of the loaded driver\r
+ @param SystemTable Pointer to the System Table\r
+\r
+ @retval EFI_SUCCESS Timer Architectural Protocol created\r
+ @retval EFI_OUT_OF_RESOURCES Not enough resources available to initialize driver.\r
+ @retval EFI_DEVICE_ERROR A device error occurred attempting to initialize the driver.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+;\r
+\r
+/**\r
+\r
+ This function adjusts the period of timer interrupts to the value specified\r
+ by TimerPeriod. If the timer period is updated, then the selected timer\r
+ period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If\r
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.\r
+ If an error occurs while attempting to update the timer period, then the\r
+ timer hardware will be put back in its state prior to this call, and\r
+ EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt\r
+ is disabled. This is not the same as disabling the CPU's interrupts.\r
+ Instead, it must either turn off the timer hardware, or it must adjust the\r
+ interrupt controller so that a CPU interrupt is not generated when the timer\r
+ interrupt fires.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+ @param NotifyFunction The rate to program the timer interrupt in 100 nS units. If\r
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is\r
+ returned. If the timer is programmable, then the timer period\r
+ will be rounded up to the nearest timer period that is supported\r
+ by the timer hardware. If TimerPeriod is set to 0, then the\r
+ timer interrupts will be disabled.\r
+\r
+ @retval EFI_SUCCESS The timer period was changed.\r
+ @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.\r
+ @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverRegisterHandler (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This,\r
+ IN EFI_TIMER_NOTIFY NotifyFunction\r
+ )\r
+;\r
+\r
+/**\r
+\r
+ This function adjusts the period of timer interrupts to the value specified\r
+ by TimerPeriod. If the timer period is updated, then the selected timer\r
+ period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If\r
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.\r
+ If an error occurs while attempting to update the timer period, then the\r
+ timer hardware will be put back in its state prior to this call, and\r
+ EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt\r
+ is disabled. This is not the same as disabling the CPU's interrupts.\r
+ Instead, it must either turn off the timer hardware, or it must adjust the\r
+ interrupt controller so that a CPU interrupt is not generated when the timer\r
+ interrupt fires.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+ @param TimerPeriod The rate to program the timer interrupt in 100 nS units. If\r
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is\r
+ returned. If the timer is programmable, then the timer period\r
+ will be rounded up to the nearest timer period that is supported\r
+ by the timer hardware. If TimerPeriod is set to 0, then the\r
+ timer interrupts will be disabled.\r
+\r
+ @retval EFI_SUCCESS The timer period was changed.\r
+ @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.\r
+ @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverSetTimerPeriod (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This,\r
+ IN UINT64 TimerPeriod\r
+ )\r
+;\r
+\r
+/**\r
+\r
+ This function retrieves the period of timer interrupts in 100 ns units,\r
+ returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod\r
+ is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is\r
+ returned, then the timer is currently disabled.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+ @param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If\r
+ 0 is returned, then the timer is currently disabled.\r
+\r
+ @retval EFI_SUCCESS The timer period was returned in TimerPeriod.\r
+ @retval EFI_INVALID_PARAMETER TimerPeriod is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverGetTimerPeriod (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This,\r
+ OUT UINT64 *TimerPeriod\r
+ )\r
+;\r
+\r
+/**\r
+\r
+ This function generates a soft timer interrupt. If the platform does not support soft\r
+ timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned.\r
+ If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler()\r
+ service, then a soft timer interrupt will be generated. If the timer interrupt is\r
+ enabled when this service is called, then the registered handler will be invoked. The\r
+ registered handler should not be able to distinguish a hardware-generated timer\r
+ interrupt from a software-generated timer interrupt.\r
+\r
+\r
+ @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
+\r
+ @retval EFI_SUCCESS The soft timer interrupt was generated.\r
+ @retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+TimerDriverGenerateSoftInterrupt (\r
+ IN EFI_TIMER_ARCH_PROTOCOL *This\r
+ )\r
+;\r
+\r
+#endif\r
--- /dev/null
+## @file\r
+# Local APIC timer driver that provides Timer Arch protocol.\r
+#\r
+# Copyright (c) 2005 - 2019, Intel Corporation. All rights reserved.<BR>\r
+# Copyright (c) 2019, Citrix Systems, Inc.\r
+#\r
+# SPDX-License-Identifier: BSD-2-Clause-Patent\r
+#\r
+##\r
+\r
+[Defines]\r
+ INF_VERSION = 0x00010005\r
+ BASE_NAME = LocalApicTimerDxe\r
+ FILE_GUID = 52fe8196-f9de-4d07-b22f-51f77a0e7c41\r
+ MODULE_TYPE = DXE_DRIVER\r
+ VERSION_STRING = 1.0\r
+\r
+ ENTRY_POINT = TimerDriverInitialize\r
+\r
+[Packages]\r
+ MdePkg/MdePkg.dec\r
+ UefiCpuPkg/UefiCpuPkg.dec\r
+ OvmfPkg/OvmfPkg.dec\r
+\r
+[LibraryClasses]\r
+ UefiBootServicesTableLib\r
+ BaseLib\r
+ DebugLib\r
+ UefiDriverEntryPoint\r
+ LocalApicLib\r
+\r
+[Sources]\r
+ LocalApicTimerDxe.h\r
+ LocalApicTimerDxe.c\r
+\r
+[Protocols]\r
+ gEfiCpuArchProtocolGuid ## CONSUMES\r
+ gEfiTimerArchProtocolGuid ## PRODUCES\r
+[Pcd]\r
+ gEfiMdePkgTokenSpaceGuid.PcdFSBClock ## CONSUMES\r
+[Depex]\r
+ gEfiCpuArchProtocolGuid\r
\r
MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf\r
MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
- OvmfPkg/XenTimerDxe/XenTimerDxe.inf\r
+ OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf\r
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf\r
UefiCpuPkg/CpuDxe/CpuDxe.inf\r
OvmfPkg/IncompatiblePciDeviceSupportDxe/IncompatiblePciDeviceSupport.inf\r
INF MdeModulePkg/Core/RuntimeDxe/RuntimeDxe.inf\r
INF MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf\r
INF MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
-INF OvmfPkg/XenTimerDxe/XenTimerDxe.inf\r
+INF OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf\r
INF UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf\r
INF UefiCpuPkg/CpuDxe/CpuDxe.inf\r
INF OvmfPkg/IncompatiblePciDeviceSupportDxe/IncompatiblePciDeviceSupport.inf\r
MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf\r
\r
MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
- OvmfPkg/XenTimerDxe/XenTimerDxe.inf\r
+ OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf\r
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf\r
UefiCpuPkg/CpuDxe/CpuDxe.inf\r
OvmfPkg/PciHotPlugInitDxe/PciHotPlugInit.inf\r
INF MdeModulePkg/Core/RuntimeDxe/RuntimeDxe.inf\r
INF MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf\r
INF MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
-INF OvmfPkg/XenTimerDxe/XenTimerDxe.inf\r
+INF OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf\r
INF UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf\r
INF UefiCpuPkg/CpuDxe/CpuDxe.inf\r
INF OvmfPkg/PciHotPlugInitDxe/PciHotPlugInit.inf\r
+++ /dev/null
-/** @file\r
- Timer Architectural Protocol as defined in the DXE CIS\r
-\r
-Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r
-Copyright (c) 2019, Citrix Systems, Inc.\r
-\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include "XenTimerDxe.h"\r
-\r
-//\r
-// The handle onto which the Timer Architectural Protocol will be installed\r
-//\r
-EFI_HANDLE mTimerHandle = NULL;\r
-\r
-//\r
-// The Timer Architectural Protocol that this driver produces\r
-//\r
-EFI_TIMER_ARCH_PROTOCOL mTimer = {\r
- TimerDriverRegisterHandler,\r
- TimerDriverSetTimerPeriod,\r
- TimerDriverGetTimerPeriod,\r
- TimerDriverGenerateSoftInterrupt\r
-};\r
-\r
-//\r
-// Pointer to the CPU Architectural Protocol instance\r
-//\r
-EFI_CPU_ARCH_PROTOCOL *mCpu;\r
-\r
-//\r
-// The notification function to call on every timer interrupt.\r
-// A bug in the compiler prevents us from initializing this here.\r
-//\r
-EFI_TIMER_NOTIFY mTimerNotifyFunction;\r
-\r
-//\r
-// The current period of the timer interrupt\r
-//\r
-volatile UINT64 mTimerPeriod = 0;\r
-\r
-//\r
-// Worker Functions\r
-//\r
-\r
-/**\r
- Interrupt Handler.\r
-\r
- @param InterruptType The type of interrupt that occurred\r
- @param SystemContext A pointer to the system context when the interrupt occurred\r
-**/\r
-VOID\r
-EFIAPI\r
-TimerInterruptHandler (\r
- IN EFI_EXCEPTION_TYPE InterruptType,\r
- IN EFI_SYSTEM_CONTEXT SystemContext\r
- )\r
-{\r
- EFI_TPL OriginalTPL;\r
-\r
- OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
-\r
- if (mTimerNotifyFunction != NULL) {\r
- //\r
- // @bug : This does not handle missed timer interrupts\r
- //\r
- mTimerNotifyFunction (mTimerPeriod);\r
- }\r
-\r
- gBS->RestoreTPL (OriginalTPL);\r
-\r
- DisableInterrupts ();\r
- SendApicEoi ();\r
-}\r
-\r
-/**\r
-\r
- This function registers the handler NotifyFunction so it is called every time\r
- the timer interrupt fires. It also passes the amount of time since the last\r
- handler call to the NotifyFunction. If NotifyFunction is NULL, then the\r
- handler is unregistered. If the handler is registered, then EFI_SUCCESS is\r
- returned. If the CPU does not support registering a timer interrupt handler,\r
- then EFI_UNSUPPORTED is returned. If an attempt is made to register a handler\r
- when a handler is already registered, then EFI_ALREADY_STARTED is returned.\r
- If an attempt is made to unregister a handler when a handler is not registered,\r
- then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to\r
- register the NotifyFunction with the timer interrupt, then EFI_DEVICE_ERROR\r
- is returned.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
- @param NotifyFunction The function to call when a timer interrupt fires. This\r
- function executes at TPL_HIGH_LEVEL. The DXE Core will\r
- register a handler for the timer interrupt, so it can know\r
- how much time has passed. This information is used to\r
- signal timer based events. NULL will unregister the handler.\r
-\r
- @retval EFI_SUCCESS The timer handler was registered.\r
- @retval EFI_UNSUPPORTED The platform does not support timer interrupts.\r
- @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already\r
- registered.\r
- @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not\r
- previously registered.\r
- @retval EFI_DEVICE_ERROR The timer handler could not be registered.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverRegisterHandler (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This,\r
- IN EFI_TIMER_NOTIFY NotifyFunction\r
- )\r
-{\r
- //\r
- // Check for invalid parameters\r
- //\r
- if ((NotifyFunction == NULL) && (mTimerNotifyFunction == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if ((NotifyFunction != NULL) && (mTimerNotifyFunction != NULL)) {\r
- return EFI_ALREADY_STARTED;\r
- }\r
-\r
- mTimerNotifyFunction = NotifyFunction;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
-\r
- This function adjusts the period of timer interrupts to the value specified\r
- by TimerPeriod. If the timer period is updated, then the selected timer\r
- period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If\r
- the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.\r
- If an error occurs while attempting to update the timer period, then the\r
- timer hardware will be put back in its state prior to this call, and\r
- EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt\r
- is disabled. This is not the same as disabling the CPU's interrupts.\r
- Instead, it must either turn off the timer hardware, or it must adjust the\r
- interrupt controller so that a CPU interrupt is not generated when the timer\r
- interrupt fires.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
- @param TimerPeriod The rate to program the timer interrupt in 100 nS units. If\r
- the timer hardware is not programmable, then EFI_UNSUPPORTED is\r
- returned. If the timer is programmable, then the timer period\r
- will be rounded up to the nearest timer period that is supported\r
- by the timer hardware. If TimerPeriod is set to 0, then the\r
- timer interrupts will be disabled.\r
-\r
- @retval EFI_SUCCESS The timer period was changed.\r
- @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.\r
- @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverSetTimerPeriod (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This,\r
- IN UINT64 TimerPeriod\r
- )\r
-{\r
- UINT64 TimerCount;\r
- UINT32 TimerFrequency;\r
- UINT32 DivideValue = 1;\r
-\r
- if (TimerPeriod == 0) {\r
- //\r
- // Disable timer interrupt for a TimerPeriod of 0\r
- //\r
- DisableApicTimerInterrupt ();\r
- } else {\r
- TimerFrequency = PcdGet32 (PcdFSBClock) / DivideValue;\r
-\r
- //\r
- // Convert TimerPeriod into local APIC counts\r
- //\r
- // TimerPeriod is in 100ns\r
- // TimerPeriod/10000000 will be in seconds.\r
- TimerCount = DivU64x32 (\r
- MultU64x32 (TimerPeriod, TimerFrequency),\r
- 10000000\r
- );\r
-\r
- // Check for overflow\r
- if (TimerCount > MAX_UINT32) {\r
- TimerCount = MAX_UINT32;\r
- /* TimerPeriod = (MAX_UINT32 / TimerFrequency) * 10000000; */\r
- TimerPeriod = 429496730;\r
- }\r
-\r
- //\r
- // Program the timer with the new count value\r
- //\r
- InitializeApicTimer (DivideValue, (UINT32)TimerCount, TRUE, LOCAL_APIC_TIMER_VECTOR);\r
-\r
- //\r
- // Enable timer interrupt\r
- //\r
- EnableApicTimerInterrupt ();\r
- }\r
-\r
- //\r
- // Save the new timer period\r
- //\r
- mTimerPeriod = TimerPeriod;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
-\r
- This function retrieves the period of timer interrupts in 100 ns units,\r
- returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod\r
- is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is\r
- returned, then the timer is currently disabled.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
- @param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If\r
- 0 is returned, then the timer is currently disabled.\r
-\r
- @retval EFI_SUCCESS The timer period was returned in TimerPeriod.\r
- @retval EFI_INVALID_PARAMETER TimerPeriod is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverGetTimerPeriod (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This,\r
- OUT UINT64 *TimerPeriod\r
- )\r
-{\r
- if (TimerPeriod == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- *TimerPeriod = mTimerPeriod;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
-\r
- This function generates a soft timer interrupt. If the platform does not support soft\r
- timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned.\r
- If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler()\r
- service, then a soft timer interrupt will be generated. If the timer interrupt is\r
- enabled when this service is called, then the registered handler will be invoked. The\r
- registered handler should not be able to distinguish a hardware-generated timer\r
- interrupt from a software-generated timer interrupt.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
-\r
- @retval EFI_SUCCESS The soft timer interrupt was generated.\r
- @retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverGenerateSoftInterrupt (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This\r
- )\r
-{\r
- EFI_TPL OriginalTPL;\r
-\r
- if (GetApicTimerInterruptState ()) {\r
- //\r
- // Invoke the registered handler\r
- //\r
- OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
-\r
- if (mTimerNotifyFunction != NULL) {\r
- //\r
- // @bug : This does not handle missed timer interrupts\r
- //\r
- mTimerNotifyFunction (mTimerPeriod);\r
- }\r
-\r
- gBS->RestoreTPL (OriginalTPL);\r
- } else {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Initialize the Timer Architectural Protocol driver\r
-\r
- @param ImageHandle ImageHandle of the loaded driver\r
- @param SystemTable Pointer to the System Table\r
-\r
- @retval EFI_SUCCESS Timer Architectural Protocol created\r
- @retval EFI_OUT_OF_RESOURCES Not enough resources available to initialize driver.\r
- @retval EFI_DEVICE_ERROR A device error occurred attempting to initialize the driver.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Initialize the pointer to our notify function.\r
- //\r
- mTimerNotifyFunction = NULL;\r
-\r
- //\r
- // Make sure the Timer Architectural Protocol is not already installed in the system\r
- //\r
- ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiTimerArchProtocolGuid);\r
-\r
- //\r
- // Find the CPU architectural protocol.\r
- //\r
- Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&mCpu);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Force the timer to be disabled\r
- //\r
- Status = TimerDriverSetTimerPeriod (&mTimer, 0);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Install interrupt handler for Local APIC Timer\r
- //\r
- Status = mCpu->RegisterInterruptHandler (\r
- mCpu,\r
- LOCAL_APIC_TIMER_VECTOR,\r
- TimerInterruptHandler\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Force the timer to be enabled at its default period\r
- //\r
- Status = TimerDriverSetTimerPeriod (&mTimer, DEFAULT_TIMER_TICK_DURATION);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Install the Timer Architectural Protocol onto a new handle\r
- //\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mTimerHandle,\r
- &gEfiTimerArchProtocolGuid,\r
- &mTimer,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- return Status;\r
-}\r
+++ /dev/null
-/** @file\r
- Private data structures\r
-\r
-Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r
-Copyright (c) 2019, Citrix Systems, Inc.\r
-\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-**/\r
-\r
-#ifndef _TIMER_H_\r
-#define _TIMER_H_\r
-\r
-#include <PiDxe.h>\r
-\r
-#include <Protocol/Cpu.h>\r
-#include <Protocol/Timer.h>\r
-\r
-#include <Register/LocalApic.h>\r
-\r
-#include <Library/UefiBootServicesTableLib.h>\r
-#include <Library/BaseLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/LocalApicLib.h>\r
-#include <Library/PcdLib.h>\r
-\r
-// The default timer tick duration is set to 10 ms = 100000 100 ns units\r
-//\r
-#define DEFAULT_TIMER_TICK_DURATION 100000\r
-\r
-//\r
-// The Timer Vector use for interrupt\r
-//\r
-#define LOCAL_APIC_TIMER_VECTOR 32\r
-\r
-//\r
-// Function Prototypes\r
-//\r
-\r
-/**\r
- Initialize the Timer Architectural Protocol driver\r
-\r
- @param ImageHandle ImageHandle of the loaded driver\r
- @param SystemTable Pointer to the System Table\r
-\r
- @retval EFI_SUCCESS Timer Architectural Protocol created\r
- @retval EFI_OUT_OF_RESOURCES Not enough resources available to initialize driver.\r
- @retval EFI_DEVICE_ERROR A device error occurred attempting to initialize the driver.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-;\r
-\r
-/**\r
-\r
- This function adjusts the period of timer interrupts to the value specified\r
- by TimerPeriod. If the timer period is updated, then the selected timer\r
- period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If\r
- the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.\r
- If an error occurs while attempting to update the timer period, then the\r
- timer hardware will be put back in its state prior to this call, and\r
- EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt\r
- is disabled. This is not the same as disabling the CPU's interrupts.\r
- Instead, it must either turn off the timer hardware, or it must adjust the\r
- interrupt controller so that a CPU interrupt is not generated when the timer\r
- interrupt fires.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
- @param NotifyFunction The rate to program the timer interrupt in 100 nS units. If\r
- the timer hardware is not programmable, then EFI_UNSUPPORTED is\r
- returned. If the timer is programmable, then the timer period\r
- will be rounded up to the nearest timer period that is supported\r
- by the timer hardware. If TimerPeriod is set to 0, then the\r
- timer interrupts will be disabled.\r
-\r
- @retval EFI_SUCCESS The timer period was changed.\r
- @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.\r
- @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverRegisterHandler (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This,\r
- IN EFI_TIMER_NOTIFY NotifyFunction\r
- )\r
-;\r
-\r
-/**\r
-\r
- This function adjusts the period of timer interrupts to the value specified\r
- by TimerPeriod. If the timer period is updated, then the selected timer\r
- period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If\r
- the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.\r
- If an error occurs while attempting to update the timer period, then the\r
- timer hardware will be put back in its state prior to this call, and\r
- EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt\r
- is disabled. This is not the same as disabling the CPU's interrupts.\r
- Instead, it must either turn off the timer hardware, or it must adjust the\r
- interrupt controller so that a CPU interrupt is not generated when the timer\r
- interrupt fires.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
- @param TimerPeriod The rate to program the timer interrupt in 100 nS units. If\r
- the timer hardware is not programmable, then EFI_UNSUPPORTED is\r
- returned. If the timer is programmable, then the timer period\r
- will be rounded up to the nearest timer period that is supported\r
- by the timer hardware. If TimerPeriod is set to 0, then the\r
- timer interrupts will be disabled.\r
-\r
- @retval EFI_SUCCESS The timer period was changed.\r
- @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.\r
- @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverSetTimerPeriod (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This,\r
- IN UINT64 TimerPeriod\r
- )\r
-;\r
-\r
-/**\r
-\r
- This function retrieves the period of timer interrupts in 100 ns units,\r
- returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod\r
- is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is\r
- returned, then the timer is currently disabled.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
- @param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If\r
- 0 is returned, then the timer is currently disabled.\r
-\r
- @retval EFI_SUCCESS The timer period was returned in TimerPeriod.\r
- @retval EFI_INVALID_PARAMETER TimerPeriod is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverGetTimerPeriod (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This,\r
- OUT UINT64 *TimerPeriod\r
- )\r
-;\r
-\r
-/**\r
-\r
- This function generates a soft timer interrupt. If the platform does not support soft\r
- timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned.\r
- If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler()\r
- service, then a soft timer interrupt will be generated. If the timer interrupt is\r
- enabled when this service is called, then the registered handler will be invoked. The\r
- registered handler should not be able to distinguish a hardware-generated timer\r
- interrupt from a software-generated timer interrupt.\r
-\r
-\r
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.\r
-\r
- @retval EFI_SUCCESS The soft timer interrupt was generated.\r
- @retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-TimerDriverGenerateSoftInterrupt (\r
- IN EFI_TIMER_ARCH_PROTOCOL *This\r
- )\r
-;\r
-\r
-#endif\r
+++ /dev/null
-## @file\r
-# Local APIC timer driver that provides Timer Arch protocol.\r
-#\r
-# Copyright (c) 2005 - 2019, Intel Corporation. All rights reserved.<BR>\r
-# Copyright (c) 2019, Citrix Systems, Inc.\r
-#\r
-# SPDX-License-Identifier: BSD-2-Clause-Patent\r
-#\r
-##\r
-\r
-[Defines]\r
- INF_VERSION = 0x00010005\r
- BASE_NAME = XenTimerDxe\r
- FILE_GUID = 52fe8196-f9de-4d07-b22f-51f77a0e7c41\r
- MODULE_TYPE = DXE_DRIVER\r
- VERSION_STRING = 1.0\r
-\r
- ENTRY_POINT = TimerDriverInitialize\r
-\r
-[Packages]\r
- MdePkg/MdePkg.dec\r
- UefiCpuPkg/UefiCpuPkg.dec\r
- OvmfPkg/OvmfPkg.dec\r
-\r
-[LibraryClasses]\r
- UefiBootServicesTableLib\r
- BaseLib\r
- DebugLib\r
- UefiDriverEntryPoint\r
- LocalApicLib\r
-\r
-[Sources]\r
- XenTimerDxe.h\r
- XenTimerDxe.c\r
-\r
-[Protocols]\r
- gEfiCpuArchProtocolGuid ## CONSUMES\r
- gEfiTimerArchProtocolGuid ## PRODUCES\r
-[Pcd]\r
- gEfiMdePkgTokenSpaceGuid.PcdFSBClock ## CONSUMES\r
-[Depex]\r
- gEfiCpuArchProtocolGuid\r
projects / mirror_edk2.git / commitdiff