> UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimer.uni | 14 + > UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerExtra.uni | 12 +
For the above two file name, better to use the same base name as that of INF file. > -----Original Message----- > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Ni, Ray > Sent: Friday, February 10, 2023 8:46 PM > To: Sunil V L <suni...@ventanamicro.com>; devel@edk2.groups.io > Cc: Dong, Eric <eric.d...@intel.com>; Kumar, Rahul R > <rahul.r.ku...@intel.com>; Daniel Schaefer <g...@danielschaefer.me>; Gerd > Hoffmann <kra...@redhat.com>; Abner Chang <abner.ch...@amd.com>; > Warkentin, Andrei <andrei.warken...@intel.com> > Subject: Re: [edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH V8 07/19] > UefiCpuPkg: Add CpuTimerDxeRiscV64 module > > Acked-by: Ray Ni <ray...@intel.com> > > > -----Original Message----- > > From: Sunil V L <suni...@ventanamicro.com> > > Sent: Friday, February 10, 2023 8:30 PM > > To: devel@edk2.groups.io > > Cc: Dong, Eric <eric.d...@intel.com>; Ni, Ray <ray...@intel.com>; Kumar, > > Rahul R <rahul.r.ku...@intel.com>; Daniel Schaefer > <g...@danielschaefer.me>; > > Gerd Hoffmann <kra...@redhat.com>; Abner Chang > <abner.ch...@amd.com>; > > Warkentin, Andrei <andrei.warken...@intel.com> > > Subject: [edk2-staging/RiscV64QemuVirt PATCH V8 07/19] UefiCpuPkg: Add > > CpuTimerDxeRiscV64 module > > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076 > > > > This DXE module initializes the timer interrupt handler > > and installs the Arch Timer protocol. > > > > Cc: Eric Dong <eric.d...@intel.com> > > Cc: Ray Ni <ray...@intel.com> > > Cc: Rahul Kumar <rahul1.ku...@intel.com> > > Cc: Daniel Schaefer <g...@danielschaefer.me> > > Cc: Gerd Hoffmann <kra...@redhat.com> > > Signed-off-by: Sunil V L <suni...@ventanamicro.com> > > Acked-by: Abner Chang <abner.ch...@amd.com> > > Reviewed-by: Andrei Warkentin <andrei.warken...@intel.com> > > --- > > UefiCpuPkg/UefiCpuPkg.dsc | 1 + > > UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerDxeRiscV64.inf | 51 ++++ > > UefiCpuPkg/CpuTimerDxeRiscV64/Timer.h | 177 ++++++++++++ > > UefiCpuPkg/CpuTimerDxeRiscV64/Timer.c | 294 > > ++++++++++++++++++++ > > UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimer.uni | 14 + > > UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerExtra.uni | 12 + > > 6 files changed, 549 insertions(+) > > > > diff --git a/UefiCpuPkg/UefiCpuPkg.dsc b/UefiCpuPkg/UefiCpuPkg.dsc > > index c511403842b8..aba5ae927586 100644 > > --- a/UefiCpuPkg/UefiCpuPkg.dsc > > +++ b/UefiCpuPkg/UefiCpuPkg.dsc > > @@ -198,6 +198,7 @@ [Components.X64] > > [Components.RISCV64] > > > > > UefiCpuPkg/Library/BaseRiscV64CpuExceptionHandlerLib/BaseRiscV64CpuExce > > ptionHandlerLib.inf > > UefiCpuPkg/Library/BaseRiscV64CpuTimerLib/BaseRiscV64CpuTimerLib.inf > > + UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerDxeRiscV64.inf > > > > [BuildOptions] > > *_*_*_CC_FLAGS = -D DISABLE_NEW_DEPRECATED_INTERFACES > > diff --git a/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerDxeRiscV64.inf > > b/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerDxeRiscV64.inf > > new file mode 100644 > > index 000000000000..2c1f9f10e165 > > --- /dev/null > > +++ b/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerDxeRiscV64.inf > > @@ -0,0 +1,51 @@ > > +## @file > > +# Timer Arch protocol module > > +# > > +# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights > > reserved.<BR> > > +# > > +# SPDX-License-Identifier: BSD-2-Clause-Patent > > +# > > +## > > + > > +[Defines] > > + INF_VERSION = 0x0001001b > > + BASE_NAME = RiscVTimerDxe > > + MODULE_UNI_FILE = RiscVTimer.uni > > + FILE_GUID = 055DDAC6-9142-4013-BF20-FC2E5BC325C9 > > + MODULE_TYPE = DXE_DRIVER > > + VERSION_STRING = 1.0 > > + ENTRY_POINT = TimerDriverInitialize > > +# > > +# The following information is for reference only and not required by the > build > > +# tools. > > +# > > +# VALID_ARCHITECTURES = RISCV64 > > +# > > +[Packages] > > + MdePkg/MdePkg.dec > > + UefiCpuPkg/UefiCpuPkg.dec > > + > > +[LibraryClasses] > > + BaseLib > > + DebugLib > > + IoLib > > + CpuLib > > + UefiBootServicesTableLib > > + UefiDriverEntryPoint > > + > > +[LibraryClasses.RISCV64] > > + RiscVSbiLib > > + > > +[Sources.RISCV64] > > + Timer.h > > + Timer.c > > + > > +[Protocols] > > + gEfiCpuArchProtocolGuid ## CONSUMES > > + gEfiTimerArchProtocolGuid ## PRODUCES > > + > > +[Depex] > > + gEfiCpuArchProtocolGuid > > + > > +[UserExtensions.TianoCore."ExtraFiles"] > > + RiscVTimerExtra.uni > > diff --git a/UefiCpuPkg/CpuTimerDxeRiscV64/Timer.h > > b/UefiCpuPkg/CpuTimerDxeRiscV64/Timer.h > > new file mode 100644 > > index 000000000000..586eb0cfadb4 > > --- /dev/null > > +++ b/UefiCpuPkg/CpuTimerDxeRiscV64/Timer.h > > @@ -0,0 +1,177 @@ > > +/** @file > > + RISC-V Timer Architectural Protocol definitions > > + > > + Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights > > reserved.<BR> > > + > > + SPDX-License-Identifier: BSD-2-Clause-Patent > > + > > +**/ > > + > > +#ifndef TIMER_H_ > > +#define TIMER_H_ > > + > > +#include <PiDxe.h> > > + > > +#include <Protocol/Cpu.h> > > +#include <Protocol/Timer.h> > > + > > +#include <Library/UefiBootServicesTableLib.h> > > +#include <Library/BaseLib.h> > > +#include <Library/DebugLib.h> > > +#include <Library/IoLib.h> > > + > > +// > > +// RISC-V use 100us timer. > > +// The default timer tick duration is set to 10 ms = 10 * 1000 * 10 100 ns > > units > > +// > > +#define DEFAULT_TIMER_TICK_DURATION 100000 > > + > > +extern VOID > > +RiscvSetTimerPeriod ( > > + UINT32 TimerPeriod > > + ); > > + > > +// > > +// Function Prototypes > > +// > > + > > +/** > > + Initialize the Timer Architectural Protocol driver > > + > > + @param ImageHandle ImageHandle of the loaded driver > > + @param SystemTable Pointer to the System Table > > + > > + @retval EFI_SUCCESS Timer Architectural Protocol created > > + @retval EFI_OUT_OF_RESOURCES Not enough resources available to > > initialize driver. > > + @retval EFI_DEVICE_ERROR A device error occured attempting to > initialize > > the driver. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverInitialize ( > > + IN EFI_HANDLE ImageHandle, > > + IN EFI_SYSTEM_TABLE *SystemTable > > + ) > > +; > > + > > +/** > > + > > + This function adjusts the period of timer interrupts to the value > > specified > > + by TimerPeriod. If the timer period is updated, then the selected timer > > + period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. > > If > > + the timer hardware is not programmable, then EFI_UNSUPPORTED is > returned. > > + If an error occurs while attempting to update the timer period, then the > > + timer hardware will be put back in its state prior to this call, and > > + EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer > > interrupt > > + is disabled. This is not the same as disabling the CPU's interrupts. > > + Instead, it must either turn off the timer hardware, or it must adjust > > the > > + interrupt controller so that a CPU interrupt is not generated when the > > timer > > + interrupt fires. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + @param NotifyFunction The rate to program the timer interrupt in 100 nS > > units. If > > + the timer hardware is not programmable, then > > EFI_UNSUPPORTED is > > + returned. If the timer is programmable, then the > > timer period > > + will be rounded up to the nearest timer period > > that is supported > > + by the timer hardware. If TimerPeriod is set to > > 0, then the > > + timer interrupts will be disabled. > > + > > + @retval EFI_SUCCESS The timer period was changed. > > + @retval EFI_UNSUPPORTED The platform cannot change the period of > > the timer interrupt. > > + @retval EFI_DEVICE_ERROR The timer period could not be changed > > due > > to a device error. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverRegisterHandler ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This, > > + IN EFI_TIMER_NOTIFY NotifyFunction > > + ) > > +; > > + > > +/** > > + > > + This function adjusts the period of timer interrupts to the value > > specified > > + by TimerPeriod. If the timer period is updated, then the selected timer > > + period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. > > If > > + the timer hardware is not programmable, then EFI_UNSUPPORTED is > returned. > > + If an error occurs while attempting to update the timer period, then the > > + timer hardware will be put back in its state prior to this call, and > > + EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer > > interrupt > > + is disabled. This is not the same as disabling the CPU's interrupts. > > + Instead, it must either turn off the timer hardware, or it must adjust > > the > > + interrupt controller so that a CPU interrupt is not generated when the > > timer > > + interrupt fires. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + @param TimerPeriod The rate to program the timer interrupt in 100 nS > units. > > If > > + the timer hardware is not programmable, then > > EFI_UNSUPPORTED is > > + returned. If the timer is programmable, then the > > timer period > > + will be rounded up to the nearest timer period > > that is supported > > + by the timer hardware. If TimerPeriod is set to > > 0, then the > > + timer interrupts will be disabled. > > + > > + @retval EFI_SUCCESS The timer period was changed. > > + @retval EFI_UNSUPPORTED The platform cannot change the period of > > the timer interrupt. > > + @retval EFI_DEVICE_ERROR The timer period could not be changed > > due > > to a device error. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverSetTimerPeriod ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This, > > + IN UINT64 TimerPeriod > > + ) > > +; > > + > > +/** > > + > > + This function retrieves the period of timer interrupts in 100 ns units, > > + returns that value in TimerPeriod, and returns EFI_SUCCESS. If > > TimerPeriod > > + is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 > > is > > + returned, then the timer is currently disabled. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + @param TimerPeriod A pointer to the timer period to retrieve in 100 > > ns > > units. If > > + 0 is returned, then the timer is currently > > disabled. > > + > > + @retval EFI_SUCCESS The timer period was returned in > > TimerPeriod. > > + @retval EFI_INVALID_PARAMETER TimerPeriod is NULL. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverGetTimerPeriod ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This, > > + OUT UINT64 *TimerPeriod > > + ) > > +; > > + > > +/** > > + > > + This function generates a soft timer interrupt. If the platform does not > > support soft > > + timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, > > EFI_SUCCESS is returned. > > + If a handler has been registered through the > > EFI_TIMER_ARCH_PROTOCOL.RegisterHandler() > > + service, then a soft timer interrupt will be generated. If the timer > > interrupt is > > + enabled when this service is called, then the registered handler will be > invoked. > > The > > + registered handler should not be able to distinguish a hardware-generated > > timer > > + interrupt from a software-generated timer interrupt. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + > > + @retval EFI_SUCCESS The soft timer interrupt was generated. > > + @retval EFI_UNSUPPORTEDT The platform does not support the generation > > of soft timer interrupts. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverGenerateSoftInterrupt ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This > > + ) > > +; > > + > > +#endif > > diff --git a/UefiCpuPkg/CpuTimerDxeRiscV64/Timer.c > > b/UefiCpuPkg/CpuTimerDxeRiscV64/Timer.c > > new file mode 100644 > > index 000000000000..db153f715e60 > > --- /dev/null > > +++ b/UefiCpuPkg/CpuTimerDxeRiscV64/Timer.c > > @@ -0,0 +1,294 @@ > > +/** @file > > + RISC-V Timer Architectural Protocol > > + > > + Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights > > reserved.<BR> > > + > > + SPDX-License-Identifier: BSD-2-Clause-Patent > > + > > +**/ > > + > > +#include <Library/BaseLib.h> > > +#include <Library/BaseRiscVSbiLib.h> > > +#include "Timer.h" > > + > > +// > > +// The handle onto which the Timer Architectural Protocol will be installed > > +// > > +STATIC EFI_HANDLE mTimerHandle = NULL; > > + > > +// > > +// The Timer Architectural Protocol that this driver produces > > +// > > +EFI_TIMER_ARCH_PROTOCOL mTimer = { > > + TimerDriverRegisterHandler, > > + TimerDriverSetTimerPeriod, > > + TimerDriverGetTimerPeriod, > > + TimerDriverGenerateSoftInterrupt > > +}; > > + > > +// > > +// Pointer to the CPU Architectural Protocol instance > > +// > > +EFI_CPU_ARCH_PROTOCOL *mCpu; > > + > > +// > > +// The notification function to call on every timer interrupt. > > +// A bug in the compiler prevents us from initializing this here. > > +// > > +STATIC EFI_TIMER_NOTIFY mTimerNotifyFunction; > > + > > +// > > +// The current period of the timer interrupt > > +// > > +STATIC UINT64 mTimerPeriod = 0; > > + > > +/** > > + Timer Interrupt Handler. > > + > > + @param InterruptType The type of interrupt that occured > > + @param SystemContext A pointer to the system context when the > interrupt > > occured > > +**/ > > +VOID > > +EFIAPI > > +TimerInterruptHandler ( > > + IN EFI_EXCEPTION_TYPE InterruptType, > > + IN EFI_SYSTEM_CONTEXT SystemContext > > + ) > > +{ > > + EFI_TPL OriginalTPL; > > + UINT64 RiscvTimer; > > + > > + OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL); > > + if (mTimerNotifyFunction != NULL) { > > + mTimerNotifyFunction (mTimerPeriod); > > + } > > + > > + RiscVDisableTimerInterrupt (); // Disable SMode timer int > > + RiscVClearPendingTimerInterrupt (); > > + if (mTimerPeriod == 0) { > > + gBS->RestoreTPL (OriginalTPL); > > + RiscVDisableTimerInterrupt (); // Disable SMode timer int > > + return; > > + } > > + > > + RiscvTimer = RiscVReadTimer (); > > + SbiSetTimer (RiscvTimer += mTimerPeriod); > > + gBS->RestoreTPL (OriginalTPL); > > + RiscVEnableTimerInterrupt (); // enable SMode timer int > > +} > > + > > +/** > > + > > + This function registers the handler NotifyFunction so it is called every > > time > > + the timer interrupt fires. It also passes the amount of time since the > > last > > + handler call to the NotifyFunction. If NotifyFunction is NULL, then the > > + handler is unregistered. If the handler is registered, then EFI_SUCCESS > > is > > + returned. If the CPU does not support registering a timer interrupt > > handler, > > + then EFI_UNSUPPORTED is returned. If an attempt is made to register a > > handler > > + when a handler is already registered, then EFI_ALREADY_STARTED is > returned. > > + If an attempt is made to unregister a handler when a handler is not > registered, > > + then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to > > + register the NotifyFunction with the timer interrupt, then > EFI_DEVICE_ERROR > > + is returned. > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + @param NotifyFunction The function to call when a timer interrupt > > fires. > > This > > + function executes at TPL_HIGH_LEVEL. The DXE > > Core will > > + register a handler for the timer interrupt, so > > it can know > > + how much time has passed. This information is > > used to > > + signal timer based events. NULL will unregister > > the handler. > > + > > + @retval EFI_SUCCESS The timer handler was registered. > > + @retval EFI_UNSUPPORTED The platform does not support timer > > interrupts. > > + @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a > > handler is already > > + registered. > > + @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a > handler > > was not > > + previously registered. > > + @retval EFI_DEVICE_ERROR The timer handler could not be > registered. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverRegisterHandler ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This, > > + IN EFI_TIMER_NOTIFY NotifyFunction > > + ) > > +{ > > + DEBUG ((DEBUG_INFO, "TimerDriverRegisterHandler(0x%lx) called\n", > > NotifyFunction)); > > + mTimerNotifyFunction = NotifyFunction; > > + return EFI_SUCCESS; > > +} > > + > > +/** > > + > > + This function adjusts the period of timer interrupts to the value > > specified > > + by TimerPeriod. If the timer period is updated, then the selected timer > > + period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. > > If > > + the timer hardware is not programmable, then EFI_UNSUPPORTED is > returned. > > + If an error occurs while attempting to update the timer period, then the > > + timer hardware will be put back in its state prior to this call, and > > + EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer > > interrupt > > + is disabled. This is not the same as disabling the CPU's interrupts. > > + Instead, it must either turn off the timer hardware, or it must adjust > > the > > + interrupt controller so that a CPU interrupt is not generated when the > > timer > > + interrupt fires. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + @param TimerPeriod The rate to program the timer interrupt in 100 nS > units. > > If > > + the timer hardware is not programmable, then > > EFI_UNSUPPORTED is > > + returned. If the timer is programmable, then the > > timer period > > + will be rounded up to the nearest timer period > > that is supported > > + by the timer hardware. If TimerPeriod is set to > > 0, then the > > + timer interrupts will be disabled. > > + > > + @retval EFI_SUCCESS The timer period was changed. > > + @retval EFI_UNSUPPORTED The platform cannot change the period of > > the timer interrupt. > > + @retval EFI_DEVICE_ERROR The timer period could not be changed > > due > > to a device error. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverSetTimerPeriod ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This, > > + IN UINT64 TimerPeriod > > + ) > > +{ > > + UINT64 RiscvTimer; > > + > > + DEBUG ((DEBUG_INFO, "TimerDriverSetTimerPeriod(0x%lx)\n", > TimerPeriod)); > > + > > + if (TimerPeriod == 0) { > > + mTimerPeriod = 0; > > + RiscVDisableTimerInterrupt (); // Disable SMode timer int > > + return EFI_SUCCESS; > > + } > > + > > + mTimerPeriod = TimerPeriod / 10; // convert unit from 100ns to 1us > > + RiscvTimer = RiscVReadTimer (); > > + SbiSetTimer (RiscvTimer + mTimerPeriod); > > + > > + mCpu->EnableInterrupt (mCpu); > > + RiscVEnableTimerInterrupt (); // enable SMode timer int > > + return EFI_SUCCESS; > > +} > > + > > +/** > > + > > + This function retrieves the period of timer interrupts in 100 ns units, > > + returns that value in TimerPeriod, and returns EFI_SUCCESS. If > > TimerPeriod > > + is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 > > is > > + returned, then the timer is currently disabled. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + @param TimerPeriod A pointer to the timer period to retrieve in 100 > > ns > > units. If > > + 0 is returned, then the timer is currently > > disabled. > > + > > + @retval EFI_SUCCESS The timer period was returned in > > TimerPeriod. > > + @retval EFI_INVALID_PARAMETER TimerPeriod is NULL. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverGetTimerPeriod ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This, > > + OUT UINT64 *TimerPeriod > > + ) > > +{ > > + *TimerPeriod = mTimerPeriod; > > + return EFI_SUCCESS; > > +} > > + > > +/** > > + > > + This function generates a soft timer interrupt. If the platform does not > > support soft > > + timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, > > EFI_SUCCESS is returned. > > + If a handler has been registered through the > > EFI_TIMER_ARCH_PROTOCOL.RegisterHandler() > > + service, then a soft timer interrupt will be generated. If the timer > > interrupt is > > + enabled when this service is called, then the registered handler will be > invoked. > > The > > + registered handler should not be able to distinguish a hardware-generated > > timer > > + interrupt from a software-generated timer interrupt. > > + > > + > > + @param This The EFI_TIMER_ARCH_PROTOCOL instance. > > + > > + @retval EFI_SUCCESS The soft timer interrupt was generated. > > + @retval EFI_UNSUPPORTEDT The platform does not support the generation > > of soft timer interrupts. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverGenerateSoftInterrupt ( > > + IN EFI_TIMER_ARCH_PROTOCOL *This > > + ) > > +{ > > + return EFI_SUCCESS; > > +} > > + > > +/** > > + Initialize the Timer Architectural Protocol driver > > + > > + @param ImageHandle ImageHandle of the loaded driver > > + @param SystemTable Pointer to the System Table > > + > > + @retval EFI_SUCCESS Timer Architectural Protocol created > > + @retval EFI_OUT_OF_RESOURCES Not enough resources available to > > initialize driver. > > + @retval EFI_DEVICE_ERROR A device error occured attempting to > initialize > > the driver. > > + > > +**/ > > +EFI_STATUS > > +EFIAPI > > +TimerDriverInitialize ( > > + IN EFI_HANDLE ImageHandle, > > + IN EFI_SYSTEM_TABLE *SystemTable > > + ) > > +{ > > + EFI_STATUS Status; > > + > > + // > > + // Initialize the pointer to our notify function. > > + // > > + mTimerNotifyFunction = NULL; > > + > > + // > > + // Make sure the Timer Architectural Protocol is not already installed > > in the > > system > > + // > > + ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, > > &gEfiTimerArchProtocolGuid); > > + > > + // > > + // Find the CPU architectural protocol. > > + // > > + Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID > > **)&mCpu); > > + ASSERT_EFI_ERROR (Status); > > + > > + // > > + // Force the timer to be disabled > > + // > > + Status = TimerDriverSetTimerPeriod (&mTimer, 0); > > + ASSERT_EFI_ERROR (Status); > > + > > + // > > + // Install interrupt handler for RISC-V Timer. > > + // > > + Status = mCpu->RegisterInterruptHandler (mCpu, > EXCEPT_RISCV_TIMER_INT, > > TimerInterruptHandler); > > + ASSERT_EFI_ERROR (Status); > > + > > + // > > + // Force the timer to be enabled at its default period > > + // > > + Status = TimerDriverSetTimerPeriod (&mTimer, > > DEFAULT_TIMER_TICK_DURATION); > > + ASSERT_EFI_ERROR (Status); > > + > > + // > > + // Install the Timer Architectural Protocol onto a new handle > > + // > > + Status = gBS->InstallMultipleProtocolInterfaces ( > > + &mTimerHandle, > > + &gEfiTimerArchProtocolGuid, > > + &mTimer, > > + NULL > > + ); > > + ASSERT_EFI_ERROR (Status); > > + return Status; > > +} > > diff --git a/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimer.uni > > b/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimer.uni > > new file mode 100644 > > index 000000000000..76de1f3f352a > > --- /dev/null > > +++ b/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimer.uni > > @@ -0,0 +1,14 @@ > > +// /** @file > > +// > > +// Timer Arch protocol strings. > > +// > > +// Copyright (c) 2016, Hewlett Packard Enterprise Development LP. All > > rights > > reserved.<BR> > > +// > > +// SPDX-License-Identifier: BSD-2-Clause-Patent > > +// > > +// **/ > > + > > + > > +#string STR_MODULE_ABSTRACT #language en-US "Timer driver that > > provides Timer Arch protocol" > > + > > +#string STR_MODULE_DESCRIPTION #language en-US "Timer driver that > > provides Timer Arch protocol." > > diff --git a/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerExtra.uni > > b/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerExtra.uni > > new file mode 100644 > > index 000000000000..ceb93a7ce82f > > --- /dev/null > > +++ b/UefiCpuPkg/CpuTimerDxeRiscV64/CpuTimerExtra.uni > > @@ -0,0 +1,12 @@ > > +// /** @file > > +// Timer Localized Strings and Content > > +// > > +// Copyright (c) 2016, Hewlett Packard Enterprise Development LP. All > > rights > > reserved.<BR> > > +// > > +// SPDX-License-Identifier: BSD-2-Clause-Patent > > +// > > +// **/ > > + > > +#string STR_PROPERTIES_MODULE_NAME > > +#language en-US > > +"Timer DXE Driver" > > -- > > 2.34.1 > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#100011): https://edk2.groups.io/g/devel/message/100011 Mute This Topic: https://groups.io/mt/96874987/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/leave/9847357/21656/1706620634/xyzzy [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
