From mboxrd@z Thu Jan 1 00:00:00 1970 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 Authentication-Results: mx.groups.io; dkim=pass header.i=@ventanamicro.com header.s=google header.b=mnf7AQgl; spf=pass (domain: ventanamicro.com, ip: 209.85.214.173, mailfrom: sunilvl@ventanamicro.com) Received: by mail-pl1-f173.google.com with SMTP id jm10so7960191plb.13 for ; Sat, 28 Jan 2023 11:18:50 -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=hD/fp8VnXyfj3RMeeVRadqmydL4ugRlNMSuFuw5TBVo=; b=mnf7AQglVvIGtE/OrYKMYazQZg2OWBKSIXqsQAJR43GT1Dyi70GJvGxiTqh3gtfUR2 tSPFTYQOn+PQTdir9d3QZbaz12HuEdfNurH7em8qrFPpSrIMp5KZJ7gZ76EWprfzp4ph I9WYRi3vJ35k9trb/yAN1vm5tGrg3+KiUOVroG3cbBC7oW+Oo+Tmy7WVBqqWSU1LMecf Sfr4Qnf1DAK24Jlsl1sdyf+2xHOgPUCjlhfH84iyPdUdSp+vfe/hiuEeHn3INB6Y1leX E4y8KmYunVXE1hiwQE6MKKSfB/9X2tvskiJRZantk46GALitvOvnQ2OEWQ5FA+zhDJMt V2cA== 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=hD/fp8VnXyfj3RMeeVRadqmydL4ugRlNMSuFuw5TBVo=; b=lEMZRzdeqcjEg19h+TAh48A5UcLJ1DJBMvRkVsn9MXOjXpRHXOGmeKwuMKyGNGd/us i6XvoozyKtSNlWOSGHJwJyUXdK3eBQslJSGm8od9GYtmTOY7sniWs1DeXA0IvD7tVjpN 5hY9Xbrj2TqVGSbGxbCpCiME1tKqORGQRyBzXja2JiSqEQO9U5OSKCsicLlgz7L4Mc83 2PkAGbsaLY7t54wKRTyb/RO2FT/ZdqoiAW0n5b7+5zmXu+QzLvhX2E2NUfZwJ+Mu5YVO SR2at7pplz86er2HJkE4Eq1vcmaNxrz9J0Cs/QD6A9KNdHQRKaGLd1ZE165ZkQlbJkDG VsMw== X-Gm-Message-State: AO0yUKXlmAjjiPyR8YCWrefQMoV5TzAMcbAfYare64tECWEYabOAZR/0 3UDpb/K6rG0GCPrpsa1JJEYPSJuHpEIziZER 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) Return-Path: 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-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> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20230128191807.2080547-1-sunilvl@ventanamicro.com> References: <20230128191807.2080547-1-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 --- 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; + } +} -- 2.38.0