From nobody Sun Feb 8 14:35:10 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of groups.io designates 66.175.222.12 as permitted sender) client-ip=66.175.222.12; envelope-from=bounce+27952+47545+1787277+3901457@groups.io; helo=web01.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zoho.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+47545+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=hpe.com ARC-Seal: i=1; a=rsa-sha256; t=1568865112; cv=none; d=zoho.com; s=zohoarc; b=l3gP4XsSNV5xr7I+QVkcTdxEEsSCsLwL7FVr2Z/4alfzBWwYzitrSYdKa2EkINKu1qVm8PACas5AjfsiYisVwWJCACBJlSTd/OyWl6iprxNQ0grGXc2kt7VV4GAJYYmSlb028MnamJeWYcqittbDz8NvS+rRznqYgpir8A/Lz94= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1568865112; h=Date:From:In-Reply-To:List-Id:List-Unsubscribe:Message-ID:Reply-To:References:Sender:Subject:To:ARC-Authentication-Results; bh=yaTONbaf5MmDLBVr0iLQ55yT1BhOKynUt1LpkHMhcY0=; b=HNn6w7pglWy8utUv9OXi4Y873DIlywSsn01Yr4o4vJKt4RyvPWk4b9F1Q8vrzxxDuJV6Og2+O/umv6Bi2P8jSI0ctah0tzK/kCDGgABXlInpp5c6OyRODg+rcEr4l1hk12tKKXKt/gmuxnqVYYMF18cV8oIZf2khvd2W69pY6Mk= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=pass; spf=pass (zoho.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+47545+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) header.from= Received: from web01.groups.io (web01.groups.io [66.175.222.12]) by mx.zohomail.com with SMTPS id 1568865112087781.7377690973109; Wed, 18 Sep 2019 20:51:52 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id ZDYNYY1788612xD2uFCIYSbZ; Wed, 18 Sep 2019 20:51:51 -0700 X-Received: from mx0a-002e3701.pphosted.com (mx0a-002e3701.pphosted.com [148.163.147.86]) by groups.io with SMTP; Wed, 18 Sep 2019 20:51:51 -0700 X-Received: from pps.filterd (m0150242.ppops.net [127.0.0.1]) by mx0a-002e3701.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x8J3pLVR030211 for ; Thu, 19 Sep 2019 03:51:50 GMT X-Received: from g4t3427.houston.hpe.com (g4t3427.houston.hpe.com [15.241.140.73]) by mx0a-002e3701.pphosted.com with ESMTP id 2v3vapnbau-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 19 Sep 2019 03:51:50 +0000 X-Received: from g4t3433.houston.hpecorp.net (g4t3433.houston.hpecorp.net [16.208.49.245]) by g4t3427.houston.hpe.com (Postfix) with ESMTP id 78F635E for ; Thu, 19 Sep 2019 03:51:49 +0000 (UTC) X-Received: from ARBDN0VRAE.asiapacific.hpqcorp.net (arbdn0vrae.asiapacific.hpqcorp.net [10.43.41.0]) by g4t3433.houston.hpecorp.net (Postfix) with ESMTP id AC3B145 for ; Thu, 19 Sep 2019 03:51:48 +0000 (UTC) From: "Gilbert Chen" To: devel@edk2.groups.io Subject: [edk2-devel] [plaforms/devel-riscv-v2 PATCHv2 12/14] U500Pkg/TimerDxe: Platform Timer DXE driver Date: Thu, 19 Sep 2019 11:51:29 +0800 Message-Id: <20190919035131.4700-13-gilbert.chen@hpe.com> In-Reply-To: <20190919035131.4700-1-gilbert.chen@hpe.com> References: <20190919035131.4700-1-gilbert.chen@hpe.com> X-HPE-SCL: -1 Precedence: Bulk List-Unsubscribe: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,gilbert.chen@hpe.com X-Gm-Message-State: rk1IxzNfO3CzAXFGrmIsaKtVx1787277AA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1568865111; bh=9RWTEH8Y3lP/2nTVOk93MmTjh0yCGOd5RePLcLYWpRc=; h=Date:From:Reply-To:Subject:To; b=PuTQABNjjV/bmPql5qdWX8j4rY5lMeE0N6w7dlWLlCStTzV618BnztBJcxKI43NjsWF zlp1NmpU5OSLxmiPbvVErcE1HLfJnZ88lAMmWAzMzbIvAEfBXPrrmXwNnw8Bq0vSWXD6P PTSrKimypjXJ/MFWwfI8hooWWDYWgpHEctY= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Timer DXE driver for U500 platform based U500 platform implementation specifc timer registers. Signed-off-by: Gilbert Chen --- .../SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c | 311 +++++++++++++++++= ++++ .../SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h | 174 ++++++++++++ .../U500Pkg/Universal/Dxe/TimerDxe/Timer.uni | 14 + .../U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf | 48 ++++ .../U500Pkg/Universal/Dxe/TimerDxe/TimerExtra.uni | 12 + 5 files changed, 559 insertions(+) create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Ti= mer.c create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Ti= mer.h create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Ti= mer.uni create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Ti= merDxe.inf create mode 100644 Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Ti= merExtra.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 00000000..5cb42943 --- /dev/null +++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.c @@ -0,0 +1,311 @@ +/** @file + RISC-V Timer Architectural Protocol for U500 platform. + + Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All right= s reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "Timer.h" +#include +#include +#include +#include +#include + +#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 =3D (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 =3D NULL; + +// +// The Timer Architectural Protocol that this driver produces +// +EFI_TIMER_ARCH_PROTOCOL mTimer =3D { + 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 =3D 0; + + +/** + 8254 Timer #0 Interrupt Handler. + + @param InterruptType The type of interrupt that occured + @param SystemContext A pointer to the system context when the interru= pt 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 =3D gBS->RaiseTPL (TPL_HIGH_LEVEL); + if (mTimerPeriod =3D=3D 0) { + gBS->RestoreTPL (OriginalTPL); + mCpu->DisableInterrupt(mCpu); + return; + } + if (mTimerNotifyFunction !=3D NULL) { + mTimerNotifyFunction (mTimerPeriod); + } + gBS->RestoreTPL (OriginalTPL); + + + RiscvTimer =3D readq_relaxed(p_mtime); + sbi_set_timer(RiscvTimer +=3D 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 han= dler, + then EFI_UNSUPPORTED is returned. If an attempt is made to register a h= andler + when a handler is already registered, then EFI_ALREADY_STARTED is return= ed. + If an attempt is made to unregister a handler when a handler is not regi= stered, + then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to + register the NotifyFunction with the timer interrupt, then EFI_DEVICE_ER= ROR + is returned. + + @param This The EFI_TIMER_ARCH_PROTOCOL instance. + @param NotifyFunction The function to call when a timer interrupt fire= s. This + function executes at TPL_HIGH_LEVEL. The DXE Co= re will + register a handler for the timer interrupt, so i= t can know + how much time has passed. This information is u= sed 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 time= r interrupts. + @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a = handler is already + registered. + @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a hand= ler was not + previously registered. + @retval EFI_DEVICE_ERROR The timer handler could not be reg= istered. + +**/ +EFI_STATUS +EFIAPI +TimerDriverRegisterHandler ( + IN EFI_TIMER_ARCH_PROTOCOL *This, + IN EFI_TIMER_NOTIFY NotifyFunction + ) +{ + DEBUG ((DEBUG_INFO, "TimerDriverRegisterHandler(0x%lx) called\n", Notify= Function)); + mTimerNotifyFunction =3D NotifyFunction; + return EFI_SUCCESS; +} + +/** + + This function adjusts the period of timer interrupts to the value specif= ied + 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 inter= rupt + 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 t= he + interrupt controller so that a CPU interrupt is not generated when the t= imer + 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 th= at 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 o= f the timer interrupt. + @retval EFI_DEVICE_ERROR The timer period could not be changed d= ue 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 =3D=3D 0) { + mTimerPeriod =3D 0; + mCpu->DisableInterrupt(mCpu); + csr_clear(CSR_SIE, MIP_STIP); // disable timer int + return EFI_SUCCESS; + } + + mTimerPeriod =3D TimerPeriod / 10; // convert unit from 100ns to 1us + + mCpu->EnableInterrupt(mCpu); + csr_set(CSR_SIE, MIP_STIP); // enable timer int + + RiscvTimer =3D 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 TimerPer= iod + 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 disabl= ed. + + @retval EFI_SUCCESS The timer period was returned in TimerPer= iod. + @retval EFI_INVALID_PARAMETER TimerPeriod is NULL. + +**/ +EFI_STATUS +EFIAPI +TimerDriverGetTimerPeriod ( + IN EFI_TIMER_ARCH_PROTOCOL *This, + OUT UINT64 *TimerPeriod + ) +{ + *TimerPeriod =3D 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_SUCCE= SS is returned. + If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.Reg= isterHandler() + service, then a soft timer interrupt will be generated. If the timer int= errupt 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-generate= d 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 o= f 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 initial= ize driver. + @retval EFI_DEVICE_ERROR A device error occured attempting to init= ialize 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 =3D NULL; + + // + // Make sure the Timer Architectural Protocol is not already installed i= n the system + // + ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiTimerArchProtocolGuid); + + // + // Find the CPU architectural protocol. + // + Status =3D gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **= ) &mCpu); + ASSERT_EFI_ERROR (Status); + + // + // Force the timer to be disabled + // + Status =3D TimerDriverSetTimerPeriod (&mTimer, 0); + ASSERT_EFI_ERROR (Status); + + // + // Install interrupt handler for RISC-V Timer. + // + Status =3D mCpu->RegisterInterruptHandler (mCpu, EXCEPT_RISCV_TIMER_INT,= TimerInterruptHandler); + ASSERT_EFI_ERROR (Status); + + // + // Force the timer to be enabled at its default period + // + Status =3D TimerDriverSetTimerPeriod (&mTimer, DEFAULT_TIMER_TICK_DURATI= ON); + ASSERT_EFI_ERROR (Status); + + // + // Install the Timer Architectural Protocol onto a new handle + // + Status =3D 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 00000000..3bfc415d --- /dev/null +++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.h @@ -0,0 +1,174 @@ +/** @file + RISC-V Timer Architectural Protocol definitions for U500 platform, + + Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All right= s reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef _TIMER_H_ +#define _TIMER_H_ + +#include + +#include +#include + +#include +#include +#include +#include +#include + +// +// RISC-V use 100us timer. +// The default timer tick duration is set to 10 ms =3D 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 initial= ize driver. + @retval EFI_DEVICE_ERROR A device error occured attempting to init= ialize 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 specif= ied + 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 inter= rupt + 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 t= he + interrupt controller so that a CPU interrupt is not generated when the t= imer + 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 th= at 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 o= f the timer interrupt. + @retval EFI_DEVICE_ERROR The timer period could not be changed d= ue 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 specif= ied + 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 inter= rupt + 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 t= he + interrupt controller so that a CPU interrupt is not generated when the t= imer + 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 th= at 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 o= f the timer interrupt. + @retval EFI_DEVICE_ERROR The timer period could not be changed d= ue 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 TimerPer= iod + 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 disabl= ed. + + @retval EFI_SUCCESS The timer period was returned in TimerPer= iod. + @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_SUCCE= SS is returned. + If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.Reg= isterHandler() + service, then a soft timer interrupt will be generated. If the timer int= errupt 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-generate= d 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 o= f 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 index 00000000..38302244 --- /dev/null +++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/Timer.uni @@ -0,0 +1,14 @@ +// /** @file +// +// RISC-V Timer Arch protocol strings. +// +// Copyright (c) 2016, Hewlett Packard Enterprise Development LP. All righ= ts reserved.
+// +// SPDX-License-Identifier: BSD-2-Clause-Patent +// +// **/ + + +#string STR_MODULE_ABSTRACT #language en-US "RISC-V timer driv= er that provides Timer Arch protocol" + +#string STR_MODULE_DESCRIPTION #language en-US "RISC-V timer driv= er that provides Timer Arch protocol." 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 00000000..f8af6889 --- /dev/null +++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerDxe.inf @@ -0,0 +1,48 @@ +## @file +# RISC-V Timer Arch protocol module for U500 platform +# +# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All right= s reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION =3D 0x00010005 + BASE_NAME =3D Timer + MODULE_UNI_FILE =3D Timer.uni + FILE_GUID =3D 3F75D495-23FF-46B6-9D19-0DECC8A4EA91 + MODULE_TYPE =3D DXE_DRIVER + VERSION_STRING =3D 1.0 + + ENTRY_POINT =3D 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/TimerExtr= a.uni b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerExtra.uni new file mode 100644 index 00000000..cf25ff14 --- /dev/null +++ b/Platform/RiscV/SiFive/U500Pkg/Universal/Dxe/TimerDxe/TimerExtra.uni @@ -0,0 +1,12 @@ +// /** @file +// Timer Localized Strings and Content +// +// Copyright (c) 2016, Hewlett Packard Enterprise Development LP. All righ= ts reserved.
+// +// SPDX-License-Identifier: BSD-2-Clause-Patent +// +// **/ + +#string STR_PROPERTIES_MODULE_NAME +#language en-US +"RISC-V Timer DXE Driver" --=20 2.12.0.windows.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#47545): https://edk2.groups.io/g/devel/message/47545 Mute This Topic: https://groups.io/mt/34196361/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-