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| author | Sunil V L <sunilvl@ventanamicro.com> | 2023-01-28 23:31:13 +0530 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-02-16 05:53:28 +0000 |
| commit | c126e3588d4081c59229247748e8fb7e3a65ba10 (patch) | |
| tree | a2682c725583377bd3881a7b407fc442b1e68533 | |
| parent | 6720b8e46f9f72b97402c57083778bf15b6f6d5b (diff) | |
| download | edk2-c126e3588d4081c59229247748e8fb7e3a65ba10.tar.gz edk2-c126e3588d4081c59229247748e8fb7e3a65ba10.tar.bz2 edk2-c126e3588d4081c59229247748e8fb7e3a65ba10.zip | |
OvmfPkg/RiscVVirt: Add ResetSystemLib library
RISC-V Qemu virt uses SBI calls to implement the reset.
Add the base class library.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Abner Chang <abner.chang@amd.com>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
| -rw-r--r-- | OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.inf | 38 | ||||
| -rw-r--r-- | OvmfPkg/RiscVVirt/Library/ResetSystemLib/ResetSystemLib.c | 128 |
2 files changed, 166 insertions, 0 deletions
diff --git a/OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.inf b/OvmfPkg/RiscVVirt/Library/ResetSystemLib/BaseResetSystemLib.inf new file mode 100644 index 0000000000..c3fa6bd99b --- /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.<BR>
+#
+# 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 0000000000..14f7653aa8 --- /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.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/ResetSystemLib.h>
+#include <Library/BaseRiscVSbiLib.h>
+
+/**
+ 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;
+ }
+}
|