From nobody Sun Feb 8 21:47:31 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+99240+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+99240+1787277+3901457@groups.io ARC-Seal: i=1; a=rsa-sha256; t=1674933531; cv=none; d=zohomail.com; s=zohoarc; b=dT+xaYhTFLclOmrWSQVFiU+2KdyzmR60ezhfV9LdB7Pa8Ey9ve+cik9ElFNNvtHltCWJ1NkYaT4FozHqnW6pxe9LFncDUR54/JrBqwMAYZm6EDJ2jgcA1C3S9EMyAxLAm+UpJu/BJwDkN2eqOxX1tdGcZryzdB2FU7Hy/pdC4Eo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1674933531; 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; bh=Q9TA4zh3+l6alZ/hWYodK0CeZ7odYGUUJ7DierDozTk=; b=WFVeen1SSn3g8yeodFzPm5nYga4RV9IEs7n7lEkPtXo0sHFTwkyrxBHztaBVJHVbpJOEbTkiudCmk5OkdE9t6dne24zGPr/yWWNT0t0MMEQhueHekVewmHSyB+Su6/gUuijiZ0lme1nZChEftqZI8ut/+D1veS+QIpPbpInXSaE= ARC-Authentication-Results: i=1; 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+99240+1787277+3901457@groups.io Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1674933531151202.27836437505186; Sat, 28 Jan 2023 11:18:51 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id DNkEYY1788612xwTl4S0Gncz; Sat, 28 Jan 2023 11:18:50 -0800 X-Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) by mx.groups.io with SMTP id smtpd.web10.1526.1674933530322642203 for ; Sat, 28 Jan 2023 11:18:50 -0800 X-Received: by mail-pl1-f173.google.com with SMTP id jm10so7960191plb.13 for ; Sat, 28 Jan 2023 11:18:50 -0800 (PST) X-Gm-Message-State: bHiVDzugVmh4h9UPFvNBeatLx1787277AA= X-Google-Smtp-Source: AK7set9X56uQRl19km9RyilPTpKXxA6jmIBC7Kj30dOsMpJm7gwU1a62FUoHLYQwLEB1P2NEBhZRyQ== X-Received: by 2002:a17:902:e3c1:b0:196:5015:506b with SMTP id r1-20020a170902e3c100b001965015506bmr6161306ple.65.1674933529680; Sat, 28 Jan 2023 11:18:49 -0800 (PST) X-Received: from kerodipc.Dlink ([49.206.11.246]) by smtp.gmail.com with ESMTPSA id n9-20020a1709026a8900b00192d9258532sm139923plk.150.2023.01.28.11.18.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Jan 2023 11:18:49 -0800 (PST) From: "Sunil V L" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Jiewen Yao , Jordan Justen , Gerd Hoffmann , Abner Chang Subject: [edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH V7 15/20] OvmfPkg/RiscVVirt: Add ResetSystemLib library Date: Sun, 29 Jan 2023 00:48:02 +0530 Message-Id: <20230128191807.2080547-16-sunilvl@ventanamicro.com> In-Reply-To: <20230128191807.2080547-1-sunilvl@ventanamicro.com> References: <20230128191807.2080547-1-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=1674933530; bh=O7yYE763q6b/4+lg5dH5PDqLTmT6uZ5K8ZUYkY9Rb8U=; h=Cc:Date:From:Reply-To:Subject:To; b=AEawa0N3CpWQACA/BdZx0rlQEn0I52X7L8UHTAKLpuXKij616x8+MJnpwkgj4pq7apv eTQ0KDNf9mdyMYn8izVkgcj5rrINz7K7XmuwW0Tr9pd4kFDrezS5w4XK0ylpLyHCbEfOi K8yasmIcH1XeafiRLPdVqjWBYEl4obf0jIc= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1674933533121100001 Content-Type: text/plain; charset="utf-8" RISC-V Qemu virt uses SBI calls to implement the reset. Add the base class library. Cc: Ard Biesheuvel Cc: Jiewen Yao Cc: Jordan Justen Cc: Gerd Hoffmann Signed-off-by: Sunil V L Acked-by: Abner Chang Reviewed-by: Andrei Warkentin --- OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.inf | 38 ++++= ++ OvmfPkg/RiscVVirt/Library/ResetSystemLib/ResetSystemLib.c | 128 ++++= ++++++++++++++++ 2 files changed, 166 insertions(+) diff --git a/OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.in= f b/OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.inf new file mode 100644 index 000000000000..c3fa6bd99b52 --- /dev/null +++ b/OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.inf @@ -0,0 +1,38 @@ +## @file +# Base library instance for ResetSystem library class for RISC-V +# +# Copyright (c) 2022, Ventana Micro Systems Inc. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION =3D 0x0001001B + BASE_NAME =3D BaseResetSystemLib + FILE_GUID =3D AB45A200-769D-4C10-B0D6-5E1FF5EEBF31 + MODULE_TYPE =3D BASE + VERSION_STRING =3D 1.0 + LIBRARY_CLASS =3D ResetSystemLib + +# +# The following information is for reference only and not required by the = build +# tools. +# +# VALID_ARCHITECTURES =3D RISCV64 +# + +[Sources] + ResetSystemLib.c + +[Packages] + MdeModulePkg/MdeModulePkg.dec + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + +[LibraryClasses] + BaseLib + DebugLib + IoLib + TimerLib + RiscVSbiLib diff --git a/OvmfPkg/RiscVVirt/Library/ResetSystemLib/ResetSystemLib.c b/Ov= mfPkg/RiscVVirt/Library/ResetSystemLib/ResetSystemLib.c new file mode 100644 index 000000000000..14f7653aa8de --- /dev/null +++ b/OvmfPkg/RiscVVirt/Library/ResetSystemLib/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 2.38.0 -=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 (#99240): https://edk2.groups.io/g/devel/message/99240 Mute This Topic: https://groups.io/mt/96593516/1787277 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-