From nobody Tue Feb 10 01:50:28 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+95072+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+95072+1787277+3901457@groups.io ARC-Seal: i=1; a=rsa-sha256; t=1665571529; cv=none; d=zohomail.com; s=zohoarc; b=Sxdea+FKBG1GIecvAwV2PhBDrLc4tSUQ4jXhuDfkO+Mlu3px+0vqDWeQG6XhHhzV2rl0kYS4H9WvQORPJaaR0NLUA26LTlUcQ63K0oNZUmmPxM9n5rAM8MMg4HuRLvkmS6C99UVH4z1/Ujis4P/ZFYDHs0Siq1K+gHXYRvOQwDo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1665571529; 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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Wed, 12 Oct 2022 03:45:27 -0700 (PDT) X-Received: from localhost.localdomain ([49.206.13.138]) by smtp.gmail.com with ESMTPSA id z4-20020aa79e44000000b0054223a0185asm10812221pfq.161.2022.10.12.03.45.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Oct 2022 03:45:27 -0700 (PDT) From: "Sunil V L" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Jiewen Yao , Jordan Justen , Gerd Hoffmann , Rebecca Cran , Peter Grehan , Daniel Schaefer Subject: [edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH V2 08/33] OvmfPkg/ResetSystemLib: Add support for RISC-V Date: Wed, 12 Oct 2022 16:14:31 +0530 Message-Id: <20221012104456.1393376-9-sunilvl@ventanamicro.com> In-Reply-To: <20221012104456.1393376-1-sunilvl@ventanamicro.com> References: <20221012104456.1393376-1-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=1665571529; bh=ir7xocEToqzLG7hv7sDLkioXmmGqNgQlX3RvflAaSFI=; h=Cc:Date:From:Reply-To:Subject:To; b=hSgnf02EtBFaLU64JtUbgu+nvVWs4fSlZNj3cjAqj8bT+YMTjq1+nXGJZGv1BTKwb8M 8uQP0+3/l7nHf1vTfS9Mc4iS0ajm1GV5TXZpeLI8FtFhVRb43vuCuiFah4bj0sOEvFFZu KkhIeIuUqfx+9ui1Ym2mSOcnSY11snhOa0Y= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1665571529921100005 Content-Type: text/plain; charset="utf-8" REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4076 This is mostly copied from edk2-platforms/Platform/RISC-V/PlatformPkg/Library/ResetSystemLib Cc: Ard Biesheuvel Cc: Jiewen Yao Cc: Jordan Justen Cc: Gerd Hoffmann Cc: Rebecca Cran Cc: Peter Grehan Cc: Daniel Schaefer Signed-off-by: Sunil V L --- .../ResetSystemLib/BaseResetSystemLib.inf | 6 + .../ResetSystemLib/DxeResetSystemLib.inf | 9 +- .../ResetSystemLib/RiscV64/DxeResetShutdown.c | 20 +++ .../ResetSystemLib/RiscV64/ResetSystemLib.c | 128 ++++++++++++++++++ 4 files changed, 162 insertions(+), 1 deletion(-) create mode 100644 OvmfPkg/Library/ResetSystemLib/RiscV64/DxeResetShutdown= .c create mode 100644 OvmfPkg/Library/ResetSystemLib/RiscV64/ResetSystemLib.c diff --git a/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf b/OvmfPk= g/Library/ResetSystemLib/BaseResetSystemLib.inf index 4397f90a24dd..797eedb195ee 100644 --- a/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf +++ b/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf @@ -25,6 +25,9 @@ [Sources.IA32, Sources.X64] Ia32_X64/BaseResetShutdown.c Ia32_X64/ResetSystemLib.c =20 +[Sources.RISCV64] + RiscV64/ResetSystemLib.c + [Packages] MdeModulePkg/MdeModulePkg.dec MdePkg/MdePkg.dec @@ -36,3 +39,6 @@ [LibraryClasses] IoLib PciLib TimerLib + +[LibraryClasses] + RiscVSbiLib diff --git a/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf b/OvmfPkg= /Library/ResetSystemLib/DxeResetSystemLib.inf index 79478453d7cb..abab573f2f06 100644 --- a/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf +++ b/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf @@ -20,13 +20,17 @@ [Defines] # The following information is for reference only and not required by the = build # tools. # -# VALID_ARCHITECTURES =3D IA32 X64 +# VALID_ARCHITECTURES =3D IA32 X64 RISCV64 # =20 [Sources.IA32, Sources.X64] Ia32_X64/DxeResetShutdown.c Ia32_X64/ResetSystemLib.c =20 +[Sources.RISCV64] + RiscV64/ResetSystemLib.c + RiscV64/DxeResetShutdown.c + [Packages] MdeModulePkg/MdeModulePkg.dec MdePkg/MdePkg.dec @@ -39,5 +43,8 @@ [LibraryClasses] PcdLib TimerLib =20 +[LibraryClasses.RISCV64] + RiscVSbiLib + [Pcd] gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId ## CONSUMES diff --git a/OvmfPkg/Library/ResetSystemLib/RiscV64/DxeResetShutdown.c b/Ov= mfPkg/Library/ResetSystemLib/RiscV64/DxeResetShutdown.c new file mode 100644 index 000000000000..027e235cad11 --- /dev/null +++ b/OvmfPkg/Library/ResetSystemLib/RiscV64/DxeResetShutdown.c @@ -0,0 +1,20 @@ +/** @file + DXE Reset System Library Shutdown API implementation for OVMF. + + Copyright (C) 2020, Red Hat, Inc. + Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include // CpuDeadLoop() +#include // ResetShutdown() + +EFI_STATUS +EFIAPI +DxeResetInit ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + return EFI_SUCCESS; +} diff --git a/OvmfPkg/Library/ResetSystemLib/RiscV64/ResetSystemLib.c b/Ovmf= Pkg/Library/ResetSystemLib/RiscV64/ResetSystemLib.c new file mode 100644 index 000000000000..14f7653aa8de --- /dev/null +++ b/OvmfPkg/Library/ResetSystemLib/RiscV64/ResetSystemLib.c @@ -0,0 +1,128 @@ +/** @file + Reset System Library functions for RISC-V + + Copyright (c) 2021, Hewlett Packard Development LP. All rights reserved.=
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include +#include +#include + +/** + This function causes a system-wide reset (cold reset), in which + all circuitry within the system returns to its initial state. This type = of reset + is asynchronous to system operation and operates without regard to + cycle boundaries. + + If this function returns, it means that the system does not support cold= reset. +**/ +VOID +EFIAPI +ResetCold ( + VOID + ) +{ + // Warm Reset via SBI ecall + SbiSystemReset (SBI_SRST_RESET_TYPE_COLD_REBOOT, SBI_SRST_RESET_REASON_N= ONE); +} + +/** + This function causes a system-wide initialization (warm reset), in which= all processors + are set to their initial state. Pending cycles are not corrupted. + + If this function returns, it means that the system does not support warm= reset. +**/ +VOID +EFIAPI +ResetWarm ( + VOID + ) +{ + // Warm Reset via SBI ecall + SbiSystemReset (SBI_SRST_RESET_TYPE_WARM_REBOOT, SBI_SRST_RESET_REASON_N= ONE); +} + +/** + This function causes the system to enter a power state equivalent + to the ACPI G2/S5 or G3 states. + + If this function returns, it means that the system does not support shut= down reset. +**/ +VOID +EFIAPI +ResetShutdown ( + VOID + ) +{ + // Shut down via SBI ecall + SbiSystemReset (SBI_SRST_RESET_TYPE_SHUTDOWN, SBI_SRST_RESET_REASON_NONE= ); +} + +/** + This function causes a systemwide reset. The exact type of the reset is + defined by the EFI_GUID that follows the Null-terminated Unicode string = passed + into ResetData. If the platform does not recognize the EFI_GUID in Reset= Data + the platform must pick a supported reset type to perform. The platform m= ay + optionally log the parameters from any non-normal reset that occurs. + + @param[in] DataSize The size, in bytes, of ResetData. + @param[in] ResetData The data buffer starts with a Null-terminated str= ing, + followed by the EFI_GUID. +**/ +VOID +EFIAPI +ResetPlatformSpecific ( + IN UINTN DataSize, + IN VOID *ResetData + ) +{ + // + // Can map to OpenSBI vendor or platform specific reset type. + // + return; +} + +/** + The ResetSystem function resets the entire platform. + + @param[in] ResetType The type of reset to perform. + @param[in] ResetStatus The status code for the reset. + @param[in] DataSize The size, in bytes, of ResetData. + @param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm,= or EfiResetShutdown + the data buffer starts with a Null-terminated = string, optionally + followed by additional binary data. The string= is a description + that the caller may use to further indicate th= e reason for the + system reset. +**/ +VOID +EFIAPI +ResetSystem ( + IN EFI_RESET_TYPE ResetType, + IN EFI_STATUS ResetStatus, + IN UINTN DataSize, + IN VOID *ResetData OPTIONAL + ) +{ + switch (ResetType) { + case EfiResetWarm: + ResetWarm (); + break; + + case EfiResetCold: + ResetCold (); + break; + + case EfiResetShutdown: + ResetShutdown (); + return; + + case EfiResetPlatformSpecific: + ResetPlatformSpecific (DataSize, ResetData); + return; + + default: + return; + } +} --=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. View/Reply Online (#95072): https://edk2.groups.io/g/devel/message/95072 Mute This Topic: https://groups.io/mt/94278066/1787277 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-