diff options
Diffstat (limited to 'roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib')
| -rw-r--r-- | roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c | 211 | ||||
| -rw-r--r-- | roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf | 41 |
2 files changed, 252 insertions, 0 deletions
diff --git a/roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c b/roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c new file mode 100644 index 000000000..9e5b70e2c --- /dev/null +++ b/roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c @@ -0,0 +1,211 @@ +/** @file
+ Support ResetSystem Runtime call using PSCI calls
+
+ Note: A similar library is implemented in
+ ArmPkg/Library/ArmPsciResetSystemLib. Similar issues might
+ exist in this implementation too.
+
+ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+ Copyright (c) 2013, ARM Ltd. All rights reserved.<BR>
+ Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/ResetSystemLib.h>
+#include <Library/ArmSmcLib.h>
+#include <Library/ArmHvcLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include <IndustryStandard/ArmStdSmc.h>
+
+#include <Protocol/FdtClient.h>
+
+STATIC UINT32 mArmPsciMethod;
+
+RETURN_STATUS
+EFIAPI
+ArmPsciResetSystemLibConstructor (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ FDT_CLIENT_PROTOCOL *FdtClient;
+ CONST VOID *Prop;
+
+ Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,
+ (VOID **)&FdtClient);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = FdtClient->FindCompatibleNodeProperty (FdtClient, "arm,psci-0.2",
+ "method", &Prop, NULL);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (AsciiStrnCmp (Prop, "hvc", 3) == 0) {
+ mArmPsciMethod = 1;
+ } else if (AsciiStrnCmp (Prop, "smc", 3) == 0) {
+ mArmPsciMethod = 2;
+ } else {
+ DEBUG ((EFI_D_ERROR, "%a: Unknown PSCI method \"%a\"\n", __FUNCTION__,
+ Prop));
+ return EFI_NOT_FOUND;
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ 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
+ )
+{
+ ARM_SMC_ARGS ArmSmcArgs;
+ ARM_HVC_ARGS ArmHvcArgs;
+
+ // Send a PSCI 0.2 SYSTEM_RESET command
+ ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
+ ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
+
+ switch (mArmPsciMethod) {
+ case 1:
+ ArmCallHvc (&ArmHvcArgs);
+ break;
+
+ case 2:
+ ArmCallSmc (&ArmSmcArgs);
+ break;
+
+ default:
+ DEBUG ((EFI_D_ERROR, "%a: no PSCI method defined\n", __FUNCTION__));
+ }
+}
+
+/**
+ 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
+ )
+{
+ // Map a warm reset into a cold reset
+ ResetCold ();
+}
+
+/**
+ 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
+ )
+{
+ ARM_SMC_ARGS ArmSmcArgs;
+ ARM_HVC_ARGS ArmHvcArgs;
+
+ // Send a PSCI 0.2 SYSTEM_OFF command
+ ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
+ ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
+
+ switch (mArmPsciMethod) {
+ case 1:
+ ArmCallHvc (&ArmHvcArgs);
+ break;
+
+ case 2:
+ ArmCallSmc (&ArmSmcArgs);
+ break;
+
+ default:
+ DEBUG ((EFI_D_ERROR, "%a: no PSCI method defined\n", __FUNCTION__));
+ }
+}
+
+/**
+ 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
+ )
+{
+ // Map the platform specific reset as reboot
+ ResetCold ();
+}
+
+/**
+ 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/roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf b/roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf new file mode 100644 index 000000000..954a6ac8a --- /dev/null +++ b/roms/edk2/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf @@ -0,0 +1,41 @@ +#/** @file
+# Reset System lib using PSCI hypervisor or secure monitor calls
+#
+# Copyright (c) 2008, Apple Inc. All rights reserved.<BR>
+# Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ArmVirtPsciResetSystemLib
+ FILE_GUID = c81d76ed-66fa-44a3-ac4a-f163120187a9
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ResetSystemLib|DXE_DRIVER DXE_RUNTIME_DRIVER
+ CONSTRUCTOR = ArmPsciResetSystemLibConstructor
+
+[Sources]
+ ArmVirtPsciResetSystemLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ ArmVirtPkg/ArmVirtPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ ArmSmcLib
+ ArmHvcLib
+ BaseLib
+ DebugLib
+ UefiBootServicesTableLib
+
+[Protocols]
+ gFdtClientProtocolGuid ## CONSUMES
+
+[Depex]
+ gFdtClientProtocolGuid
|