From nobody Mon Feb 9 20:30:32 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+94917+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+94917+1787277+3901457@groups.io ARC-Seal: i=1; a=rsa-sha256; t=1665396781; cv=none; d=zohomail.com; s=zohoarc; b=dsdTEJWFPB+uLYfPAZiPs0lCFIAEPNch0X3QfwFE2ON3xw/uN2A57gLEre1Jz9WFR3Ko+FCiZl6PGE52PuPia9hhVUX0XDCaWzpsTHJuMtYPV/GXGd/+ekF2vLfAUH7HrD8xa1ImWqXmJETFeZBcwvZxvkczuc3j5dhNPuiCFo4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1665396781; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; 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Mon, 10 Oct 2022 03:12:59 -0700 (PDT) X-Received: from localhost.localdomain ([49.206.13.138]) by smtp.gmail.com with ESMTPSA id h17-20020a170902f55100b001788ccecbf5sm6302138plf.31.2022.10.10.03.12.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Oct 2022 03:12:59 -0700 (PDT) From: "Sunil V L" To: devel@edk2.groups.io Cc: Eric Dong , Ray Ni , Rahul Kumar , Daniel Schaefer Subject: [edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH 18/29] UefiCpuPkg/CpuDxe: Add support for RISC-V Date: Mon, 10 Oct 2022 15:41:51 +0530 Message-Id: <20221010101202.1146624-19-sunilvl@ventanamicro.com> In-Reply-To: <20221010101202.1146624-1-sunilvl@ventanamicro.com> References: <20221010101202.1146624-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: 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,sunilvl@ventanamicro.com Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1665396781; bh=CGryx35TN1YhcdUaVgalov1YXRX/p75thWesGu7S3VI=; h=Cc:Date:From:Reply-To:Subject:To; b=jhpQjbzDy1oItywUAWQyd1NXt2N3xFiewg48rYxppodkTF5Wy08jxJW0rygpLfxP5U5 XDAt468GWMc1xy7PnO3D5UAdnmxT5kP3W6ZAP0os4JQY+0B409aDyq4lE1nhHNLK4deX2 4aavJuvUVGw3TYQYUroStt5OHnLPEpfIS0E= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1665396783274100036 Content-Type: text/plain; charset="utf-8" REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4076 This is migrated from edk2-platforms/Silicon/RISC-V/ProcessorPkg/Universal/CpuDxe Cc: Eric Dong Cc: Ray Ni Cc: Rahul Kumar Cc: Daniel Schaefer Signed-off-by: Sunil V L --- UefiCpuPkg/CpuDxe/CpuDxe.inf | 11 ++ UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.h | 199 +++++++++++++++++++ UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.c | 307 +++++++++++++++++++++++++++++ 3 files changed, 517 insertions(+) create mode 100644 UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.h create mode 100644 UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.c diff --git a/UefiCpuPkg/CpuDxe/CpuDxe.inf b/UefiCpuPkg/CpuDxe/CpuDxe.inf index 069a7f2933bd..5a6ead3bfbb6 100644 --- a/UefiCpuPkg/CpuDxe/CpuDxe.inf +++ b/UefiCpuPkg/CpuDxe/CpuDxe.inf @@ -44,6 +44,9 @@ [LibraryClasses.IA32, LibraryClasses.X64] MtrrLib UefiCpuLib =20 +[LibraryClasses.RISCV64] + RiscVSbiLib + [Sources.IA32, Sources.X64] Ia32_X64/CpuDxe.c Ia32_X64/CpuDxe.h @@ -62,11 +65,18 @@ [Sources.X64] X64/CpuAsm.nasm X64/PagingAttribute.c =20 +[Sources.RISCV64] + RiscV64/CpuDxe.c + RiscV64/CpuDxe.h + [Protocols] gEfiCpuArchProtocolGuid ## PRODUCES gEfiMpServiceProtocolGuid ## PRODUCES gEfiSmmBase2ProtocolGuid ## SOMETIMES_CONSUMES =20 +[Protocols.RISCV64] + gRiscVEfiBootProtocolGuid ## PRODUCES + [Guids] gIdleLoopEventGuid ## CONSUMES ## E= vent gEfiVectorHandoffTableGuid ## SOMETIMES_CONSUMES ## S= ystemTable @@ -83,6 +93,7 @@ [Pcd] gUefiCpuPkgTokenSpaceGuid.PcdCpuStackSwitchExceptionList ##= CONSUMES gUefiCpuPkgTokenSpaceGuid.PcdCpuKnownGoodStackSize ##= CONSUMES gEfiMdeModulePkgTokenSpaceGuid.PcdTdxSharedBitMask ##= CONSUMES + gUefiCpuPkgTokenSpaceGuid.PcdCpuCoreCrystalClockFrequency ##= CONSUMES =20 [Depex] TRUE diff --git a/UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.h b/UefiCpuPkg/CpuDxe/RiscV64= /CpuDxe.h new file mode 100644 index 000000000000..49f4e119665a --- /dev/null +++ b/UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.h @@ -0,0 +1,199 @@ +/** @file + RISC-V CPU DXE module header file. + + Copyright (c) 2016 - 2022, Hewlett Packard Enterprise Development LP. Al= l rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef CPU_DXE_H_ +#define CPU_DXE_H_ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +/** + Flush CPU data cache. If the instruction cache is fully coherent + with all DMA operations then function can just return EFI_SUCCESS. + + @param This Protocol instance structure + @param Start Physical address to start flushing from. + @param Length Number of bytes to flush. Round up to chipset + granularity. + @param FlushType Specifies the type of flush operation to perfo= rm. + + @retval EFI_SUCCESS If cache was flushed + @retval EFI_UNSUPPORTED If flush type is not supported. + @retval EFI_DEVICE_ERROR If requested range could not be flushed. + +**/ +EFI_STATUS +EFIAPI +CpuFlushCpuDataCache ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_PHYSICAL_ADDRESS Start, + IN UINT64 Length, + IN EFI_CPU_FLUSH_TYPE FlushType + ); + +/** + Enables CPU interrupts. + + @param This Protocol instance structure + + @retval EFI_SUCCESS If interrupts were enabled in the CPU + @retval EFI_DEVICE_ERROR If interrupts could not be enabled on the CPU. + +**/ +EFI_STATUS +EFIAPI +CpuEnableInterrupt ( + IN EFI_CPU_ARCH_PROTOCOL *This + ); + +/** + Disables CPU interrupts. + + @param This Protocol instance structure + + @retval EFI_SUCCESS If interrupts were disabled in the CPU. + @retval EFI_DEVICE_ERROR If interrupts could not be disabled on the CPU. + +**/ +EFI_STATUS +EFIAPI +CpuDisableInterrupt ( + IN EFI_CPU_ARCH_PROTOCOL *This + ); + +/** + Return the state of interrupts. + + @param This Protocol instance structure + @param State Pointer to the CPU's current interrupt st= ate + + @retval EFI_SUCCESS If interrupts were disabled in the CPU. + @retval EFI_INVALID_PARAMETER State is NULL. + +**/ +EFI_STATUS +EFIAPI +CpuGetInterruptState ( + IN EFI_CPU_ARCH_PROTOCOL *This, + OUT BOOLEAN *State + ); + +/** + Generates an INIT to the CPU. + + @param This Protocol instance structure + @param InitType Type of CPU INIT to perform + + @retval EFI_SUCCESS If CPU INIT occurred. This value should never = be + seen. + @retval EFI_DEVICE_ERROR If CPU INIT failed. + @retval EFI_UNSUPPORTED Requested type of CPU INIT not supported. + +**/ +EFI_STATUS +EFIAPI +CpuInit ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_CPU_INIT_TYPE InitType + ); + +/** + Registers a function to be called from the CPU interrupt handler. + + @param This Protocol instance structure + @param InterruptType Defines which interrupt to hook. IA-32 + valid range is 0x00 through 0xFF + @param InterruptHandler A pointer to a function of type + EFI_CPU_INTERRUPT_HANDLER that is called + when a processor interrupt occurs. A null + pointer is an error condition. + + @retval EFI_SUCCESS If handler installed or uninstalled. + @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handl= er + for InterruptType was previously installe= d. + @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler f= or + InterruptType was not previously installe= d. + @retval EFI_UNSUPPORTED The interrupt specified by InterruptType + is not supported. + +**/ +EFI_STATUS +EFIAPI +CpuRegisterInterruptHandler ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_EXCEPTION_TYPE InterruptType, + IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler + ); + +/** + Returns a timer value from one of the CPU's internal timers. There is no + inherent time interval between ticks but is a function of the CPU freque= ncy. + + @param This - Protocol instance structure. + @param TimerIndex - Specifies which CPU timer is requested. + @param TimerValue - Pointer to the returned timer value. + @param TimerPeriod - A pointer to the amount of time that passes + in femtoseconds (10-15) for each increment + of TimerValue. If TimerValue does not + increment at a predictable rate, then 0 is + returned. The amount of time that has + passed between two calls to GetTimerValue() + can be calculated with the formula + (TimerValue2 - TimerValue1) * TimerPeriod. + This parameter is optional and may be NULL. + + @retval EFI_SUCCESS - If the CPU timer count was returned. + @retval EFI_UNSUPPORTED - If the CPU does not have any readable ti= mers. + @retval EFI_DEVICE_ERROR - If an error occurred while reading the t= imer. + @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue is= NULL. + +**/ +EFI_STATUS +EFIAPI +CpuGetTimerValue ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN UINT32 TimerIndex, + OUT UINT64 *TimerValue, + OUT UINT64 *TimerPeriod OPTIONAL + ); + +/** + Set memory cacheability attributes for given range of memeory. + + @param This Protocol instance structure + @param BaseAddress Specifies the start address of the + memory range + @param Length Specifies the length of the memory range + @param Attributes The memory cacheability for the memory ra= nge + + @retval EFI_SUCCESS If the cacheability of that memory range = is + set successfully + @retval EFI_UNSUPPORTED If the desired operation cannot be done + @retval EFI_INVALID_PARAMETER The input parameter is not correct, + such as Length =3D 0 + +**/ +EFI_STATUS +EFIAPI +CpuSetMemoryAttributes ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_PHYSICAL_ADDRESS BaseAddress, + IN UINT64 Length, + IN UINT64 Attributes + ); + +#endif diff --git a/UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.c b/UefiCpuPkg/CpuDxe/RiscV64= /CpuDxe.c new file mode 100644 index 000000000000..9f557b776a09 --- /dev/null +++ b/UefiCpuPkg/CpuDxe/RiscV64/CpuDxe.c @@ -0,0 +1,307 @@ +/** @file + RISC-V CPU DXE driver. + + Copyright (c) 2016 - 2022, Hewlett Packard Enterprise Development LP. Al= l rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "CpuDxe.h" + +// +// Global Variables +// +STATIC BOOLEAN mInterruptState =3D FALSE; +STATIC EFI_HANDLE mCpuHandle =3D NULL; + +EFI_CPU_ARCH_PROTOCOL gCpu =3D { + CpuFlushCpuDataCache, + CpuEnableInterrupt, + CpuDisableInterrupt, + CpuGetInterruptState, + CpuInit, + CpuRegisterInterruptHandler, + CpuGetTimerValue, + CpuSetMemoryAttributes, + 1, // NumberOfTimers + 4 // DmaBufferAlignment +}; + +// +// CPU Arch Protocol Functions +// + +/** + Flush CPU data cache. If the instruction cache is fully coherent + with all DMA operations then function can just return EFI_SUCCESS. + + @param This Protocol instance structure + @param Start Physical address to start flushing from. + @param Length Number of bytes to flush. Round up to chipset + granularity. + @param FlushType Specifies the type of flush operation to perfo= rm. + + @retval EFI_SUCCESS If cache was flushed + @retval EFI_UNSUPPORTED If flush type is not supported. + @retval EFI_DEVICE_ERROR If requested range could not be flushed. + +**/ +EFI_STATUS +EFIAPI +CpuFlushCpuDataCache ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_PHYSICAL_ADDRESS Start, + IN UINT64 Length, + IN EFI_CPU_FLUSH_TYPE FlushType + ) +{ + return EFI_SUCCESS; +} + +/** + Enables CPU interrupts. + + @param This Protocol instance structure + + @retval EFI_SUCCESS If interrupts were enabled in the CPU + @retval EFI_DEVICE_ERROR If interrupts could not be enabled on the CPU. + +**/ +EFI_STATUS +EFIAPI +CpuEnableInterrupt ( + IN EFI_CPU_ARCH_PROTOCOL *This + ) +{ + EnableInterrupts (); + mInterruptState =3D TRUE; + return EFI_SUCCESS; +} + +/** + Disables CPU interrupts. + + @param This Protocol instance structure + + @retval EFI_SUCCESS If interrupts were disabled in the CPU. + @retval EFI_DEVICE_ERROR If interrupts could not be disabled on the CPU. + +**/ +EFI_STATUS +EFIAPI +CpuDisableInterrupt ( + IN EFI_CPU_ARCH_PROTOCOL *This + ) +{ + DisableInterrupts (); + mInterruptState =3D FALSE; + return EFI_SUCCESS; +} + +/** + Return the state of interrupts. + + @param This Protocol instance structure + @param State Pointer to the CPU's current interrupt st= ate + + @retval EFI_SUCCESS If interrupts were disabled in the CPU. + @retval EFI_INVALID_PARAMETER State is NULL. + +**/ +EFI_STATUS +EFIAPI +CpuGetInterruptState ( + IN EFI_CPU_ARCH_PROTOCOL *This, + OUT BOOLEAN *State + ) +{ + if (State =3D=3D NULL) { + return EFI_INVALID_PARAMETER; + } + + *State =3D mInterruptState; + return EFI_SUCCESS; +} + +/** + Generates an INIT to the CPU. + + @param This Protocol instance structure + @param InitType Type of CPU INIT to perform + + @retval EFI_SUCCESS If CPU INIT occurred. This value should never = be + seen. + @retval EFI_DEVICE_ERROR If CPU INIT failed. + @retval EFI_UNSUPPORTED Requested type of CPU INIT not supported. + +**/ +EFI_STATUS +EFIAPI +CpuInit ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_CPU_INIT_TYPE InitType + ) +{ + return EFI_UNSUPPORTED; +} + +/** + Registers a function to be called from the CPU interrupt handler. + + @param This Protocol instance structure + @param InterruptType Defines which interrupt to hook. IA-32 + valid range is 0x00 through 0xFF + @param InterruptHandler A pointer to a function of type + EFI_CPU_INTERRUPT_HANDLER that is called + when a processor interrupt occurs. A null + pointer is an error condition. + + @retval EFI_SUCCESS If handler installed or uninstalled. + @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handl= er + for InterruptType was previously installe= d. + @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler f= or + InterruptType was not previously installe= d. + @retval EFI_UNSUPPORTED The interrupt specified by InterruptType + is not supported. + +**/ +EFI_STATUS +EFIAPI +CpuRegisterInterruptHandler ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_EXCEPTION_TYPE InterruptType, + IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler + ) +{ + return RegisterCpuInterruptHandler (InterruptType, InterruptHandler); +} + +/** + Returns a timer value from one of the CPU's internal timers. There is no + inherent time interval between ticks but is a function of the CPU freque= ncy. + + @param This - Protocol instance structure. + @param TimerIndex - Specifies which CPU timer is requested. + @param TimerValue - Pointer to the returned timer value. + @param TimerPeriod - A pointer to the amount of time that passes + in femtoseconds (10-15) for each increment + of TimerValue. If TimerValue does not + increment at a predictable rate, then 0 is + returned. The amount of time that has + passed between two calls to GetTimerValue() + can be calculated with the formula + (TimerValue2 - TimerValue1) * TimerPeriod. + This parameter is optional and may be NULL. + + @retval EFI_SUCCESS - If the CPU timer count was returned. + @retval EFI_UNSUPPORTED - If the CPU does not have any readable ti= mers. + @retval EFI_DEVICE_ERROR - If an error occurred while reading the t= imer. + @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue is= NULL. + +**/ +EFI_STATUS +EFIAPI +CpuGetTimerValue ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN UINT32 TimerIndex, + OUT UINT64 *TimerValue, + OUT UINT64 *TimerPeriod OPTIONAL + ) +{ + if (TimerValue =3D=3D NULL) { + return EFI_INVALID_PARAMETER; + } + + if (TimerIndex !=3D 0) { + return EFI_INVALID_PARAMETER; + } + + *TimerValue =3D (UINT64)RiscVReadTimer (); + if (TimerPeriod !=3D NULL) { + *TimerPeriod =3D DivU64x32 ( + 1000000000000000u, + PcdGet64 (PcdCpuCoreCrystalClockFrequency) + ); + } + + return EFI_SUCCESS; +} + +/** + Implementation of SetMemoryAttributes() service of CPU Architecture Prot= ocol. + + This function modifies the attributes for the memory region specified by= BaseAddress and + Length from their current attributes to the attributes specified by Attr= ibutes. + + @param This The EFI_CPU_ARCH_PROTOCOL instance. + @param BaseAddress The physical address that is the start address = of a memory region. + @param Length The size in bytes of the memory region. + @param Attributes The bit mask of attributes to set for the memor= y region. + + @retval EFI_SUCCESS The attributes were set for the memory reg= ion. + @retval EFI_ACCESS_DENIED The attributes for the memory resource ran= ge specified by + BaseAddress and Length cannot be modified. + @retval EFI_INVALID_PARAMETER Length is zero. + Attributes specified an illegal combinatio= n of attributes that + cannot be set together. + @retval EFI_OUT_OF_RESOURCES There are not enough system resources to m= odify the attributes of + the memory resource range. + @retval EFI_UNSUPPORTED The processor does not support one or more= bytes of the memory + resource range specified by BaseAddress an= d Length. + The bit mask of attributes is not support = for the memory resource + range specified by BaseAddress and Length. + +**/ +EFI_STATUS +EFIAPI +CpuSetMemoryAttributes ( + IN EFI_CPU_ARCH_PROTOCOL *This, + IN EFI_PHYSICAL_ADDRESS BaseAddress, + IN UINT64 Length, + IN UINT64 Attributes + ) +{ + DEBUG ((DEBUG_INFO, "%a: Set memory attributes not supported yet\n", __F= UNCTION__)); + return EFI_SUCCESS; +} + +/** + Initialize the state information for the CPU Architectural Protocol. + + @param ImageHandle Image handle this driver. + @param SystemTable Pointer to the System Table. + + @retval EFI_SUCCESS Thread can be successfully created + @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure + @retval EFI_DEVICE_ERROR Cannot create the thread + +**/ +EFI_STATUS +EFIAPI +InitializeCpu ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + + InitializeCpuExceptionHandlers(NULL); + + // + // Make sure interrupts are disabled + // + DisableInterrupts (); + + // + // Install CPU Architectural Protocol + // + Status =3D gBS->InstallMultipleProtocolInterfaces ( + &mCpuHandle, + &gEfiCpuArchProtocolGuid, + &gCpu, + NULL + ); + ASSERT_EFI_ERROR (Status); + return Status; +} --=20 2.25.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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