@@ -151,6 +151,14 @@
gArmTokenSpaceGuid.PcdArmArchTimerHypIntrNum|26|UINT32|0x00000040
gArmTokenSpaceGuid.PcdArmArchTimerVirtIntrNum|27|UINT32|0x00000041
+ #
+ # ARM PSCI function invocations can be done either through hypervisor
+ # calls (HVC) or secure monitor calls (SMC).
+ # PcdArmPsciMethod == 1 : use HVC
+ # PcdArmPsciMethod == 2 : use SMC
+ #
+ gArmTokenSpaceGuid.PcdArmPsciMethod|0|UINT32|0x00000042
+
[PcdsFixedAtBuild.ARM]
#
# ARM Security Extension
new file mode 100644
@@ -0,0 +1,114 @@
+/** @file
+ Support ResetSystem Runtime call using PSCI hvc calls
+
+ 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>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <PiDxe.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/EfiResetSystemLib.h>
+#include <Library/ArmSmcLib.h>
+#include <Library/ArmHvcLib.h>
+
+#define PSCI_0_2_FN_BASE 0x84000000
+#define PSCI_0_2_FN(n) (PSCI_0_2_FN_BASE + (n))
+#define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8)
+#define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9)
+
+/**
+ Resets the entire platform.
+
+ @param ResetType The type of reset to perform.
+ @param ResetStatus The status code for the reset.
+ @param DataSize The size, in bytes, of WatchdogData.
+ @param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
+ EfiResetShutdown the data buffer starts with a Null-terminated
+ Unicode string, optionally followed by additional binary data.
+
+**/
+EFI_STATUS
+EFIAPI
+LibResetSystem (
+ IN EFI_RESET_TYPE ResetType,
+ IN EFI_STATUS ResetStatus,
+ IN UINTN DataSize,
+ IN CHAR16 *ResetData OPTIONAL
+ )
+{
+ ARM_SMC_ARGS ArmSmcArgs;
+ ARM_HVC_ARGS ArmHvcArgs;
+
+ switch (ResetType) {
+
+ case EfiResetPlatformSpecific:
+ // Map the platform specific reset as reboot
+ case EfiResetWarm:
+ // Map a warm reset into a cold reset
+ case EfiResetCold:
+ // Send a PSCI 0.2 SYSTEM_RESET command
+ ArmSmcArgs.Arg0 = PSCI_0_2_FN_SYSTEM_RESET;
+ ArmHvcArgs.Arg0 = PSCI_0_2_FN_SYSTEM_RESET;
+ break;
+ case EfiResetShutdown:
+ // Send a PSCI 0.2 SYSTEM_OFF command
+ ArmSmcArgs.Arg0 = PSCI_0_2_FN_SYSTEM_OFF;
+ ArmHvcArgs.Arg0 = PSCI_0_2_FN_SYSTEM_OFF;
+ break;
+
+ default:
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ switch (PcdGet32 (PcdArmPsciMethod)) {
+
+ case 1:
+ ArmCallHvc (&ArmHvcArgs);
+ break;
+
+ case 2:
+ ArmCallSmc (&ArmSmcArgs);
+ break;
+
+ default:
+ DEBUG ((EFI_D_ERROR, "%a: no PSCI method defined\n", __FUNCTION__));
+ return EFI_UNSUPPORTED;
+ }
+
+ // We should never be here
+ DEBUG ((EFI_D_ERROR, "%a: PSCI Reset failed\n", __FUNCTION__));
+ CpuDeadLoop ();
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Initialize any infrastructure required for LibResetSystem () to function.
+
+ @param ImageHandle The firmware allocated handle for the EFI image.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+LibInitializeResetSystem (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ return EFI_SUCCESS;
+}
new file mode 100644
@@ -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>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ArmPsciResetSystemLib
+ FILE_GUID = A8F59B69-A105-41C7-8F5A-2C60DD7FD7AA
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = EfiResetSystemLib
+
+[Sources]
+ ArmPsciResetSystemLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ MdePkg/MdePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+ IoLib
+ DebugLib
+ BaseLib
+ ArmSmcLib
+ ArmHvcLib
+
+[Pcd]
+ gArmTokenSpaceGuid.PcdArmPsciMethod
This implementation of EfiResetSystemLib uses ARM PSCI calls to perform reboot and poweroff, using either HVC or SMC calls. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- ArmPkg/ArmPkg.dec | 8 ++ .../ArmPsciResetSystemLib/ArmPsciResetSystemLib.c | 114 +++++++++++++++++++++ .../ArmPsciResetSystemLib.inf | 41 ++++++++ 3 files changed, 163 insertions(+) create mode 100644 ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.c create mode 100644 ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf