UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / MdeModulePkg / Core / Dxe / Misc / SetWatchdogTimer.c

/** @file\r
  UEFI Miscellaneous boot Services SetWatchdogTimer service implementation\r
\r
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "DxeMain.h"\r
\r
#define WATCHDOG_TIMER_CALIBRATE_PER_SECOND  10000000\r
\r
/**\r
  Sets the system's watchdog timer.\r
\r
  @param  Timeout         The number of seconds to set the watchdog timer to.\r
                          A value of zero disables the timer.\r
  @param  WatchdogCode    The numeric code to log on a watchdog timer timeout\r
                          event. The firmware reserves codes 0x0000 to 0xFFFF.\r
                          Loaders and operating systems may use other timeout\r
                          codes.\r
  @param  DataSize        The size, in bytes, of WatchdogData.\r
  @param  WatchdogData    A data buffer that includes a Null-terminated Unicode\r
                          string, optionally followed by additional binary data.\r
                          The string is a description that the call may use to\r
                          further indicate the reason to be logged with a\r
                          watchdog event.\r
\r
  @return EFI_SUCCESS               Timeout has been set\r
  @return EFI_NOT_AVAILABLE_YET     WatchdogTimer is not available yet\r
  @return EFI_UNSUPPORTED           System does not have a timer (currently not used)\r
  @return EFI_DEVICE_ERROR          Could not complete due to hardware error\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
CoreSetWatchdogTimer (\r
  IN UINTN   Timeout,\r
  IN UINT64  WatchdogCode,\r
  IN UINTN   DataSize,\r
  IN CHAR16  *WatchdogData OPTIONAL\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  //\r
  // Check our architectural protocol\r
  //\r
  if (gWatchdogTimer == NULL) {\r
    return EFI_NOT_AVAILABLE_YET;\r
  }\r
\r
  //\r
  // Attempt to set the timeout\r
  //\r
  Status = gWatchdogTimer->SetTimerPeriod (gWatchdogTimer, MultU64x32 (Timeout, WATCHDOG_TIMER_CALIBRATE_PER_SECOND));\r
\r
  //\r
  // Check for errors\r
  //\r
  if (EFI_ERROR (Status)) {\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r