From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) by mx.groups.io with SMTP id smtpd.web10.13398.1676032256853730884 for ; Fri, 10 Feb 2023 04:31:26 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@ventanamicro.com header.s=google header.b=eNP+MljH; spf=pass (domain: ventanamicro.com, ip: 209.85.216.43, mailfrom: sunilvl@ventanamicro.com) Received: by mail-pj1-f43.google.com with SMTP id gj9-20020a17090b108900b0023114156d36so9190974pjb.4 for ; Fri, 10 Feb 2023 04:31:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Z6FcI5cGWNZ9WjlJ3hKIrcjRr2W5igFTmUDqzjhW5Do=; b=eNP+MljHUy0hIntvB9825TWtp+vPIrmHCVP1MijatvqDDaNxhbudwIaVvtevpg6dZb HIBRF4vaIMKj3i68f5buc+eQMSnvVSaiThAgLF2POXCqD1zhNByMz63ZiCSl51gUdsCo 87obw3hnKUr4mHt7ExNGf5OiCvCzl+auLJszUloxbbv8v68xquZkDkpIRPrDKkR7U5Yy b91/686RqlpsDvr4e+YFlm1V1sKIS+5gsP8ul/LDaI0tfX0dCz3FQD2QDJzfdsz6eHuI bgpb/nS9P0gV/6TA02VGEKNdBADNCwJokpt3fW+0QCGQeRM3x5tTsycjlmk/if0wJXX6 zOXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Z6FcI5cGWNZ9WjlJ3hKIrcjRr2W5igFTmUDqzjhW5Do=; b=XaONBMZSvF/20V/uTu38Abloap3nNn3uHNUM/s1RuyGMCVYp38JIyMR63pz49V+iBV jnlmQUmb2igdjlShTydLekYnp2LP7sH8TjspnIGt0gaFTIgSsvYa1lLjH3r5WP0VoR2+ wlRvN1xzt42J890TSG4d28iYsdCYHsVGpd4xL09texpRkXmw6aKMEfHQzEBpTM+87awk AC/C9GRmKYOx2GS04Vf0E+G6npBe9jslM6PL4XuNW0cGsa5Ch6sO3sJ1mQGz2ZczhK5w La7a6eXurz5/eO+Q9Qgfve52QQPtoFmx8E25E8+BQwFgjYSH5FX+CO4YzKkgNNVwC1l5 LiCg== X-Gm-Message-State: AO0yUKU5Dra2aCzCL5fMjG66odq8d9igxmgnIvetv4bBRIeebuuhRTms PHJQHoU/w8Fn710N6CDg9vLsFTrbyZlBORfC X-Google-Smtp-Source: AK7set8sTsxz1zLMjwbbVUTL+vbhpFi7K6YpgMaN+EB5ldwti0ZtYSLvXjC/vMrUxDUQ0Cz6cPVIaQ== X-Received: by 2002:a17:902:e885:b0:198:dd3f:2847 with SMTP id w5-20020a170902e88500b00198dd3f2847mr17914629plg.21.1676032285579; Fri, 10 Feb 2023 04:31:25 -0800 (PST) Return-Path: Received: from localhost.localdomain ([49.206.14.226]) by smtp.gmail.com with ESMTPSA id b17-20020a170902ed1100b0019a73faf773sm1172961pld.71.2023.02.10.04.31.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Feb 2023 04:31:25 -0800 (PST) From: "Sunil V L" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Jiewen Yao , Jordan Justen , Gerd Hoffmann , Abner Chang , Andrei Warkentin Subject: [edk2-staging/RiscV64QemuVirt PATCH V8 14/19] OvmfPkg/RiscVVirt: Add ResetSystemLib library Date: Fri, 10 Feb 2023 18:00:36 +0530 Message-Id: <20230210123041.1489506-15-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230210123041.1489506-1-sunilvl@ventanamicro.com> References: <20230210123041.1489506-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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.inf 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 = 0x0001001B + BASE_NAME = BaseResetSystemLib + FILE_GUID = AB45A200-769D-4C10-B0D6-5E1FF5EEBF31 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = ResetSystemLib + +# +# The following information is for reference only and not required by the build +# tools. +# +# VALID_ARCHITECTURES = 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/OvmfPkg/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_NONE); +} + +/** + 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_NONE); +} + +/** + 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 shutdown 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 ResetData + the platform must pick a supported reset type to perform. The platform may + 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 string, + 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 the 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; + } +} -- 2.34.1