From: "Chen, Gilbert" <gilbert.chen@hpe.com>
To: "devel@edk2.groups.io" <devel@edk2.groups.io>
Cc: "Chen, Gilbert" <gilbert.chen@hpe.com>
Subject: [PATCH 13/15] [platforms/devel-riscv]: U500Pkg/TimerDxe: Platform Timer DXE driver
Date: Tue, 27 Aug 2019 06:26:28 +0000 [thread overview]
Message-ID: <TU4PR8401MB10560CF31EEFD5142B8674A785A00@TU4PR8401MB1056.NAMPRD84.PROD.OUTLOOK.COM> (raw)
Timer DXE driver for U500 platform based U500 platform implementation specifc timer registers.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gilbert Chen <gilbert.chen@hpe.com>
---
.../SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c | 317 +++++++++++++++++++++
.../SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h | 179 ++++++++++++
.../U500Pkg/Universal/Dxe/TimerDxe/Timer.uni | Bin 0 -> 1678 bytes
.../U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf | 54 ++++
| Bin 0 -> 1374 bytes
5 files changed, 550 insertions(+)
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.uni
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerExtra.uni
diff --git a/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c
new file mode 100644
index 0000000..8f8eeb6
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c
@@ -0,0 +1,317 @@
+/** @file
+ RISC-V Timer Architectural Protocol for U500 platform.
+
+ Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which 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 "Timer.h"
+#include <sbi/riscv_asm.h>
+#include <sbi/riscv_encoding.h>
+#include <sbi/sbi.h>
+#include <sbi/riscv_io.h>
+#include <sbi/riscv_atomic.h>
+
+#define CLINT_REG_MTIME 0x0200BFF8
+#define CLINT_REG_MTIMECMP0 0x02004000
+#define CLINT_REG_MTIMECMP1 0x02004008
+#define CLINT_REG_MTIMECMP2 0x02004010
+#define CLINT_REG_MTIMECMP3 0x02004018
+#define CLINT_REG_MTIMECMP4 0x02004020
+
+static volatile void * const p_mtime = (void *)CLINT_REG_MTIME;
+#define MTIME (*p_mtime)
+#define MTIMECMP(i) (p_mtimecmp[i])
+
+//
+// The handle onto which the Timer Architectural Protocol will be installed
+//
+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.
+//
+EFI_TIMER_NOTIFY mTimerNotifyFunction;
+
+//
+// The current period of the timer interrupt
+//
+volatile UINT64 mTimerPeriod = 0;
+
+
+/**
+ 8254 Timer #0 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;
+
+ csr_clear(CSR_SIE, MIP_STIP); // enable timer int
+ OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
+ if (mTimerPeriod == 0) {
+ gBS->RestoreTPL (OriginalTPL);
+ mCpu->DisableInterrupt(mCpu);
+ return;
+ }
+ if (mTimerNotifyFunction != NULL) {
+ mTimerNotifyFunction (mTimerPeriod);
+ }
+ gBS->RestoreTPL (OriginalTPL);
+
+
+ RiscvTimer = readq_relaxed(p_mtime);
+ sbi_set_timer(RiscvTimer += mTimerPeriod);
+ csr_set(CSR_SIE, MIP_STIP); // enable 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;
+ mCpu->DisableInterrupt(mCpu);
+ csr_clear(CSR_SIE, MIP_STIP); // disable timer int
+ return EFI_SUCCESS;
+ }
+
+ mTimerPeriod = TimerPeriod / 10; // convert unit from 100ns to 1us
+
+ mCpu->EnableInterrupt(mCpu);
+ csr_set(CSR_SIE, MIP_STIP); // enable timer int
+
+ RiscvTimer = readq_relaxed(p_mtime);
+ sbi_set_timer(RiscvTimer + mTimerPeriod);
+ 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/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h
new file mode 100644
index 0000000..ed2e19b
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h
@@ -0,0 +1,179 @@
+/** @file
+ RISC-V Timer Architectural Protocol definitions for U500 platform,
+
+ Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which 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 _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>
+#include <Library/RiscVCpuLib.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/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.uni b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.uni
new file mode 100644
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diff --git a/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf
new file mode 100644
index 0000000..9cac99b
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf
@@ -0,0 +1,54 @@
+## @file
+# RISC-V Timer Arch protocol module for U500 platform
+#
+# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which 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 = Timer
+ MODULE_UNI_FILE = Timer.uni
+ FILE_GUID = 3F75D495-23FF-46B6-9D19-0DECC8A4EA91
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = TimerDriverInitialize
+
+[Packages]
+ MdePkg/MdePkg.dec
+ RiscVPkg/RiscVPkg.dec
+
+[LibraryClasses]
+ UefiBootServicesTableLib
+ BaseLib
+ DebugLib
+ UefiDriverEntryPoint
+ IoLib
+ RiscVCpuLib
+ RiscVOpensbiLib
+
+[Sources]
+ Timer.h
+ Timer.c
+
+[Protocols]
+ gEfiCpuArchProtocolGuid ## CONSUMES
+ gEfiTimerArchProtocolGuid ## PRODUCES
+
+[Pcd]
+ gUefiRiscVPkgTokenSpaceGuid.PcdRiscVMachineTimerFrequencyInHerz
+
+[Depex]
+ gEfiCpuArchProtocolGuid
+
+[UserExtensions.TianoCore."ExtraFiles"]
+ TimerExtra.uni
diff --git a/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerExtra.uni b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerExtra.uni
new file mode 100644
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--
2.7.4
reply other threads:[~2019-08-27 6:26 UTC|newest]
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