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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-09-10 18:47:30 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2014-09-10 18:47:30 +0000 |
| commit | ca3026d361970847d87a5c6ebb8108b28486e9ec (patch) | |
| tree | 2fd0ee65933743eb2f3a20489593122b869734bb /ArmPkg/Library/ArmPsciResetSystemLib | |
| parent | 58e92b394ee359d2768abdace4dab7baf73c1231 (diff) | |
| download | edk2-ca3026d361970847d87a5c6ebb8108b28486e9ec.tar.gz edk2-ca3026d361970847d87a5c6ebb8108b28486e9ec.tar.bz2 edk2-ca3026d361970847d87a5c6ebb8108b28486e9ec.zip | |
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
Diffstat (limited to 'ArmPkg/Library/ArmPsciResetSystemLib')
| -rw-r--r-- | ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.c | 109 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf | 40 |
2 files changed, 149 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.c b/ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.c new file mode 100644 index 0000000000..48c8735a22 --- /dev/null +++ b/ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.c @@ -0,0 +1,109 @@ +/** @file
+ Support ResetSystem Runtime call using PSCI 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>
+
+#include <IndustryStandard/ArmStdSmc.h>
+
+/**
+ 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 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
+ ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
+ break;
+ case EfiResetShutdown:
+ // Send a PSCI 0.2 SYSTEM_OFF command
+ ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
+ ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_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;
+}
diff --git a/ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf b/ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf new file mode 100644 index 0000000000..bcea0aeb31 --- /dev/null +++ b/ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf @@ -0,0 +1,40 @@ +#/** @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]
+ DebugLib
+ BaseLib
+ ArmSmcLib
+ ArmHvcLib
+
+[Pcd]
+ gArmTokenSpaceGuid.PcdArmPsciMethod
|