mirror of https://github.com/acidanthera/audk.git
ArmPkg: Introduced ArmPsciResetSystemLib
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 Acked-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16089 6f19259b-4bc3-4df7-8a09-765794883524
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@ -231,3 +231,11 @@
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gArmTokenSpaceGuid.PcdGicDistributorBase|0|UINT32|0x0000000C
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gArmTokenSpaceGuid.PcdGicInterruptInterfaceBase|0|UINT32|0x0000000D
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gArmTokenSpaceGuid.PcdGicSgiIntId|0|UINT32|0x00000025
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#
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# ARM PSCI function invocations can be done either through hypervisor
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# calls (HVC) or secure monitor calls (SMC).
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# PcdArmPsciMethod == 1 : use HVC
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# PcdArmPsciMethod == 2 : use SMC
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#
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gArmTokenSpaceGuid.PcdArmPsciMethod|0|UINT32|0x00000042
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@ -118,6 +118,7 @@
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ArmPkg/Library/SemiHostingSerialPortLib/SemiHostingSerialPortLib.inf
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ArmPkg/Library/SemihostLib/SemihostLib.inf
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ArmPkg/Library/UncachedMemoryAllocationLib/UncachedMemoryAllocationLib.inf
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ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf
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ArmPkg/Drivers/CpuDxe/CpuDxe.inf
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ArmPkg/Drivers/CpuPei/CpuPei.inf
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/** @file
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Support ResetSystem Runtime call using PSCI calls
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Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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Copyright (c) 2013, ARM Ltd. All rights reserved.<BR>
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Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/EfiResetSystemLib.h>
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#include <Library/ArmSmcLib.h>
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#include <Library/ArmHvcLib.h>
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#include <IndustryStandard/ArmStdSmc.h>
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/**
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Resets the entire platform.
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@param ResetType The type of reset to perform.
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@param ResetStatus The status code for the reset.
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@param DataSize The size, in bytes, of WatchdogData.
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@param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
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EfiResetShutdown the data buffer starts with a Null-terminated
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Unicode string, optionally followed by additional binary data.
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**/
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EFI_STATUS
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EFIAPI
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LibResetSystem (
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IN EFI_RESET_TYPE ResetType,
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IN EFI_STATUS ResetStatus,
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IN UINTN DataSize,
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IN CHAR16 *ResetData OPTIONAL
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)
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{
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ARM_SMC_ARGS ArmSmcArgs;
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ARM_HVC_ARGS ArmHvcArgs;
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switch (ResetType) {
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case EfiResetPlatformSpecific:
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// Map the platform specific reset as reboot
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case EfiResetWarm:
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// Map a warm reset into a cold reset
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case EfiResetCold:
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// Send a PSCI 0.2 SYSTEM_RESET command
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ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
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ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
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break;
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case EfiResetShutdown:
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// Send a PSCI 0.2 SYSTEM_OFF command
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ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
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ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
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break;
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default:
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ASSERT (FALSE);
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return EFI_UNSUPPORTED;
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}
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switch (PcdGet32 (PcdArmPsciMethod)) {
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case 1:
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ArmCallHvc (&ArmHvcArgs);
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break;
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case 2:
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ArmCallSmc (&ArmSmcArgs);
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break;
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default:
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DEBUG ((EFI_D_ERROR, "%a: no PSCI method defined\n", __FUNCTION__));
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return EFI_UNSUPPORTED;
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}
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// We should never be here
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DEBUG ((EFI_D_ERROR, "%a: PSCI Reset failed\n", __FUNCTION__));
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CpuDeadLoop ();
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return EFI_UNSUPPORTED;
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}
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/**
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Initialize any infrastructure required for LibResetSystem () to function.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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LibInitializeResetSystem (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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return EFI_SUCCESS;
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}
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@ -0,0 +1,40 @@
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#/** @file
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# Reset System lib using PSCI hypervisor or secure monitor calls
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#
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# Copyright (c) 2008, Apple Inc. All rights reserved.<BR>
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# Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#
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#**/
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = ArmPsciResetSystemLib
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FILE_GUID = A8F59B69-A105-41C7-8F5A-2C60DD7FD7AA
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = EfiResetSystemLib
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[Sources]
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ArmPsciResetSystemLib.c
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[Packages]
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ArmPkg/ArmPkg.dec
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MdePkg/MdePkg.dec
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EmbeddedPkg/EmbeddedPkg.dec
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[LibraryClasses]
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DebugLib
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BaseLib
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ArmSmcLib
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ArmHvcLib
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[Pcd]
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gArmTokenSpaceGuid.PcdArmPsciMethod
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