1 files changed, 125 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationPsciResetSystemLib/ArmVirtualizationPsciResetSystemLib.c b/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationPsciResetSystemLib/ArmVirtualizationPsciResetSystemLib.c
new file mode 100644
index 000000000..88332f56f
--- /dev/null
+++ b/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationPsciResetSystemLib/ArmVirtualizationPsciResetSystemLib.c
@@ -0,0 +1,125 @@
+/** @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>
+
+  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>
+
+STATIC UINT32 mArmPsciMethod;
+
+RETURN_STATUS
+EFIAPI
+ArmPsciResetSystemLibConstructor (
+  VOID
+  )
+{
+  mArmPsciMethod = PcdGet32 (PcdArmPsciMethod);
+  return RETURN_SUCCESS;
+}
+
+/**
+  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 (mArmPsciMethod) {
+  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;
+}