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Thu, 13 Oct 2022 02:58:59 -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-staging/RiscV64QemuVirt PATCH V3 08/34] OvmfPkg/ResetSystemLib: Add support for RISC-V Date: Thu, 13 Oct 2022 15:28:03 +0530 Message-Id: <20221013095829.1454581-9-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221013095829.1454581-1-sunilvl@ventanamicro.com> References: <20221013095829.1454581-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076 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/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf index 4397f90a24dd..83cebb45b3db 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 +[Sources.RISCV64] + RiscV64/ResetSystemLib.c + [Packages] MdeModulePkg/MdeModulePkg.dec MdePkg/MdePkg.dec @@ -36,3 +39,6 @@ [LibraryClasses] IoLib PciLib TimerLib + +[LibraryClasses.RISCV64] + 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 = IA32 X64 +# VALID_ARCHITECTURES = IA32 X64 RISCV64 # [Sources.IA32, Sources.X64] Ia32_X64/DxeResetShutdown.c Ia32_X64/ResetSystemLib.c +[Sources.RISCV64] + RiscV64/ResetSystemLib.c + RiscV64/DxeResetShutdown.c + [Packages] MdeModulePkg/MdeModulePkg.dec MdePkg/MdePkg.dec @@ -39,5 +43,8 @@ [LibraryClasses] PcdLib TimerLib +[LibraryClasses.RISCV64] + RiscVSbiLib + [Pcd] gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId ## CONSUMES diff --git a/OvmfPkg/Library/ResetSystemLib/RiscV64/DxeResetShutdown.c b/OvmfPkg/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/OvmfPkg/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_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; + } +} -- 2.25.1