1 files changed, 118 insertions, 0 deletions
diff --git a/Platform/Intel/AdvancedFeaturePkg/Ipmi/OsWdt/OsWdt.c b/Platform/Intel/AdvancedFeaturePkg/Ipmi/OsWdt/OsWdt.c
new file mode 100644
index 0000000000..c64c70f2a9
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Ipmi/OsWdt/OsWdt.c
@@ -0,0 +1,118 @@
+/** @file
+  IPMI Os watchdog timer Driver.
+
+Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that 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 <Uefi.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/IpmiCommandLib.h>
+#include <IndustryStandard/Ipmi.h>
+#include <IpmiEx.h>
+
+BOOLEAN mOsWdtFlag = FALSE;
+
+EFI_EVENT                   mExitBootServicesEvent;
+
+VOID
+EFIAPI
+EnableEfiOsBootWdtHandler (
+  IN EFI_EVENT        Event,
+  IN VOID             *Context
+  )
+/*++
+
+Routine Description:
+  Enable the OS Boot Watchdog Timer.
+  Is called only on legacy or EFI OS boot.
+
+Arguments:
+  Event    - Event type
+  *Context - Context for the event
+
+Returns:
+  None
+
+--*/
+{
+  EFI_STATUS                       Status;
+  IPMI_SET_WATCHDOG_TIMER_REQUEST  SetWatchdogTimer;
+  UINT8                            CompletionCode;
+  IPMI_GET_WATCHDOG_TIMER_RESPONSE GetWatchdogTimer;
+  static BOOLEAN                   OsWdtEventHandled = FALSE;
+
+  DEBUG((EFI_D_ERROR, "!!! EnableEfiOsBootWdtHandler()!!!\n"));
+
+  //
+  // Make sure it processes once only. And proceess it only if OsWdtFlag==TRUE;
+  //
+  if (OsWdtEventHandled || !mOsWdtFlag) {
+    return ;
+  }
+
+  OsWdtEventHandled = TRUE;
+
+  Status = IpmiGetWatchdogTimer (&GetWatchdogTimer);
+  if (EFI_ERROR (Status)) {
+    return ;
+  }
+
+  ZeroMem (&SetWatchdogTimer, sizeof(SetWatchdogTimer));
+  //
+  // Just flip the Timer Use bit. This should release the timer.
+  //
+  SetWatchdogTimer.TimerUse.TimerRunning         = 1;
+  SetWatchdogTimer.TimerUse.TimerUse             = IPMI_WATCHDOG_TIMER_OS_LOADER;
+  SetWatchdogTimer.TimerActions                  = IPMI_WATCHDOG_TIMER_ACTION_HARD_RESET;
+  SetWatchdogTimer.TimerUseExpirationFlagsClear &= ~BIT4;
+  SetWatchdogTimer.TimerUseExpirationFlagsClear |= BIT1 | BIT2;
+  SetWatchdogTimer.InitialCountdownValue         = 600; // 100ms / count
+
+  Status = IpmiSetWatchdogTimer (&SetWatchdogTimer, &CompletionCode);
+  return ;
+}
+
+EFI_STATUS
+EFIAPI
+DriverInit (
+  IN EFI_HANDLE         ImageHandle,
+  IN EFI_SYSTEM_TABLE   *SystemTable
+  )
+/*++
+
+Routine Description:
+  This is the standard EFI driver point. This function intitializes
+  the private data required for creating ASRR Driver.
+
+Arguments:
+  As required for DXE driver enrty routine.
+  ImageHandle - ImageHandle of the loaded driver
+  SystemTable - Pointer to the System Table
+
+Returns:
+  EFI_SUCCESS     - Protocol successfully started and installed.
+
+--*/
+{
+  EFI_STATUS                     Status;
+
+  Status = gBS->CreateEvent (
+                  EVT_SIGNAL_EXIT_BOOT_SERVICES,
+                  TPL_NOTIFY,
+                  EnableEfiOsBootWdtHandler,
+                  NULL,
+                  &mExitBootServicesEvent
+                  );
+
+  return EFI_SUCCESS;
+}