(This is migrated from edk2-platforms)
Cc: Daniel Schaefer <daniel.schae...@hpe.com>
Cc: Abner Chang <abner.ch...@hpe.com>
Cc: Sunil V L <suni...@ventanamicro.com>
Reviewed-by: Abner Chang <abner.ch...@hpe.com>
Signed-off-by: Daniel Schaefer <daniel.schae...@hpe.com>
---
.../Library/ResetSystemLib/ResetSystemLib.inf | 33 +++++
.../Include/Library/RiscVEdk2SbiLib.h | 38 +++++-
.../Library/ResetSystemLib/ResetSystemLib.c | 128 ++++++++++++++++++
.../Library/RiscVEdk2SbiLib/RiscVEdk2SbiLib.c | 44 +++++-
4 files changed, 241 insertions(+), 2 deletions(-)
create mode 100644
Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.inf
create mode 100644
Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.c
diff --git
a/Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.inf
b/Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.inf
new file mode 100644
index 0000000000..f876ae2056
--- /dev/null
+++ b/Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.inf
@@ -0,0 +1,33 @@
+## @file
+# Library instance for ResetSystem library class for RISC-V using SBI ecalls
+#
+# Copyright (c) 2021, Hewlett Packard Enterprise Development LP. All rights
reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ResetSystemLib
+ FILE_GUID = 3eff6057-1116-4dcb-837e-c0ef1a120ab1
+ 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]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ Silicon/RISC-V/ProcessorPkg/RiscVProcessorPkg.dec
+
+[LibraryClasses]
+ DebugLib
+ RiscVEdk2SbiLib
diff --git a/Silicon/RISC-V/ProcessorPkg/Include/Library/RiscVEdk2SbiLib.h
b/Silicon/RISC-V/ProcessorPkg/Include/Library/RiscVEdk2SbiLib.h
index 66a87cb8c3..88d957f002 100644
--- a/Silicon/RISC-V/ProcessorPkg/Include/Library/RiscVEdk2SbiLib.h
+++ b/Silicon/RISC-V/ProcessorPkg/Include/Library/RiscVEdk2SbiLib.h
@@ -1,7 +1,7 @@
/** @file
Library to call the RISC-V SBI ecalls
- Copyright (c) 2020, Hewlett Packard Development LP. All rights reserved.<BR>
+ Copyright (c) 2021, Hewlett Packard Development LP. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -474,6 +474,42 @@ SbiRemoteHfenceVvma (
IN UINTN Size
);
+///
+/// Firmware System Reset (SRST) Extension
+///
+
+/**
+ Reset the system
+
+ The System Reset Extension provides a function that allow the supervisor
+ software to request system-level reboot or shutdown. The term "system" refers
+ to the world-view of supervisor software and the underlying SBI
+ implementation could be machine mode firmware or hypervisor.
+
+ Valid parameters for ResetType and ResetReason are defined in
sbi_ecall_interface.h
+
+ #define SBI_SRST_RESET_TYPE_SHUTDOWN 0x0
+ #define SBI_SRST_RESET_TYPE_COLD_REBOOT 0x1
+ #define SBI_SRST_RESET_TYPE_WARM_REBOOT 0x2
+
+ #define SBI_SRST_RESET_REASON_NONE 0x0
+ #define SBI_SRST_RESET_REASON_SYSFAIL 0x1
+
+ When the call is successful, it will not return.
+
+ @param[in] ResetType Typ of reset: Shutdown, cold-, or
warm-reset.
+ @param[in] ResetReason Why the system resets. No reason or system
failure.
+ @retval EFI_INVALID_PARAMETER Either ResetType or ResetReason is invalid.
+ @retval EFI_UNSUPPORTED ResetType is valid but not implemented on
the platform.
+ @retval EFI_DEVICE_ERROR Unknown error.
+**/
+EFI_STATUS
+EFIAPI
+SbiSystemReset (
+ IN UINTN ResetType,
+ IN UINTN ResetReason
+ );
+
///
/// Vendor Specific extension space: Extension Ids 0x09000000 through
0x09FFFFFF
///
diff --git
a/Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.c
b/Platform/RISC-V/PlatformPkg/Library/ResetSystemLib/ResetSystemLib.c
new file mode 100644
index 0000000000..67e40151d1
--- /dev/null
+++ b/Platform/RISC-V/PlatformPkg/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/RiscVEdk2SbiLib.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;
+ }
+}
diff --git
a/Silicon/RISC-V/ProcessorPkg/Library/RiscVEdk2SbiLib/RiscVEdk2SbiLib.c
b/Silicon/RISC-V/ProcessorPkg/Library/RiscVEdk2SbiLib/RiscVEdk2SbiLib.c
index 9bbeaaec3f..319526ed8f 100644
--- a/Silicon/RISC-V/ProcessorPkg/Library/RiscVEdk2SbiLib/RiscVEdk2SbiLib.c
+++ b/Silicon/RISC-V/ProcessorPkg/Library/RiscVEdk2SbiLib/RiscVEdk2SbiLib.c
@@ -15,7 +15,7 @@
- SbiLegacyRemoteSfenceVmaAsid -> Use SbiRemoteSfenceVmaAsid
- SbiLegacyShutdown -> Wait for new System Reset extension
- Copyright (c) 2020, Hewlett Packard Development LP. All rights reserved.<BR>
+ Copyright (c) 2021, Hewlett Packard Development LP. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Revision Reference:
@@ -715,6 +715,48 @@ SbiRemoteHFenceVvma (
return TranslateError (Ret.Error);
}
+/**
+ Reset the system
+
+ The System Reset Extension provides a function that allow the supervisor
+ software to request system-level reboot or shutdown. The term "system" refers
+ to the world-view of supervisor software and the underlying SBI
+ implementation could be machine mode firmware or hypervisor.
+
+ Valid parameters for ResetType and ResetReason are defined in
sbi_ecall_interface.h
+
+ #define SBI_SRST_RESET_TYPE_SHUTDOWN 0x0
+ #define SBI_SRST_RESET_TYPE_COLD_REBOOT 0x1
+ #define SBI_SRST_RESET_TYPE_WARM_REBOOT 0x2
+
+ #define SBI_SRST_RESET_REASON_NONE 0x0
+ #define SBI_SRST_RESET_REASON_SYSFAIL 0x1
+
+ When the call is successful, it will not return.
+
+ @param[in] ResetType Typ of reset: Shutdown, cold-, or
warm-reset.
+ @param[in] ResetReason Why the system resets. No reason or system
failure.
+ @retval EFI_INVALID_PARAMETER Either ResetType or ResetReason is invalid.
+ @retval EFI_UNSUPPORTED ResetType is valid but not implemented on
the platform.
+ @retval EFI_DEVICE_ERROR Unknown error.
+**/
+EFI_STATUS
+EFIAPI
+SbiSystemReset (
+ IN UINTN ResetType,
+ IN UINTN ResetReason
+ )
+{
+ SbiRet Ret = SbiCall (
+ SBI_EXT_SRST,
+ SBI_EXT_SRST_RESET,
+ 2,
+ ResetType,
+ ResetReason
+ );
+ return TranslateError (Ret.Error);
+}
+
//
// SBI interface function for the vendor extension
//
--
2.31.1
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