[mirror_edk2.git] / EmbeddedPkg / RealTimeClockRuntimeDxe / RealTimeClock.c

/** @file\r
  Implement EFI RealTimeClock runtime services via RTC Lib.\r
\r
  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
  Copyright (c) 2017, Linaro, Ltd. All rights reserved.<BR>\r
\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <PiDxe.h>\r
#include <Library/DebugLib.h>\r
#include <Library/RealTimeClockLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiRuntimeLib.h>\r
#include <Protocol/RealTimeClock.h>\r
\r
EFI_HANDLE  mHandle = NULL;\r
\r
//\r
// These values can be set by SetTime () and need to be returned by GetTime ()\r
// but cannot usually be kept by the RTC hardware, so we store them in a UEFI\r
// variable instead.\r
//\r
typedef struct {\r
  INT16           TimeZone;\r
  UINT8           Daylight;\r
} NON_VOLATILE_TIME_SETTINGS;\r
\r
STATIC CONST CHAR16 mTimeSettingsVariableName[] = L"RtcTimeSettings";\r
STATIC NON_VOLATILE_TIME_SETTINGS mTimeSettings;\r
\r
STATIC\r
BOOLEAN\r
IsValidTimeZone (\r
  IN  INT16  TimeZone\r
  )\r
{\r
  return TimeZone == EFI_UNSPECIFIED_TIMEZONE ||\r
         (TimeZone >= -1440 && TimeZone <= 1440);\r
}\r
\r
STATIC\r
BOOLEAN\r
IsValidDaylight (\r
  IN  INT8  Daylight\r
  )\r
{\r
  return Daylight == 0 ||\r
         Daylight == EFI_TIME_ADJUST_DAYLIGHT ||\r
         Daylight == (EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT);\r
}\r
\r
STATIC\r
BOOLEAN\r
EFIAPI\r
IsLeapYear (\r
  IN EFI_TIME   *Time\r
  )\r
{\r
  if (Time->Year % 4 == 0) {\r
    if (Time->Year % 100 == 0) {\r
      if (Time->Year % 400 == 0) {\r
        return TRUE;\r
      } else {\r
        return FALSE;\r
      }\r
    } else {\r
      return TRUE;\r
    }\r
  } else {\r
    return FALSE;\r
  }\r
}\r
\r
STATIC CONST INTN mDayOfMonth[12] = {\r
  31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31\r
};\r
\r
STATIC\r
BOOLEAN\r
EFIAPI\r
IsDayValid (\r
  IN  EFI_TIME  *Time\r
  )\r
{\r
  ASSERT (Time->Day >= 1);\r
  ASSERT (Time->Day <= mDayOfMonth[Time->Month - 1]);\r
  ASSERT (Time->Month != 2 || IsLeapYear (Time) || Time->Day <= 28);\r
\r
  if (Time->Day < 1 ||\r
      Time->Day > mDayOfMonth[Time->Month - 1] ||\r
      (Time->Month == 2 && !IsLeapYear (Time) && Time->Day > 28)) {\r
    return FALSE;\r
  }\r
  return TRUE;\r
}\r
\r
STATIC\r
BOOLEAN\r
EFIAPI\r
IsTimeValid(\r
  IN EFI_TIME *Time\r
  )\r
{\r
  // Check the input parameters are within the range specified by UEFI\r
  if (Time->Year   < 1900               ||\r
      Time->Year   > 9999               ||\r
      Time->Month  < 1                  ||\r
      Time->Month  > 12                 ||\r
      !IsDayValid (Time)                ||\r
      Time->Hour   > 23                 ||\r
      Time->Minute > 59                 ||\r
      Time->Second > 59                 ||\r
      !IsValidTimeZone (Time->TimeZone) ||\r
      !IsValidDaylight (Time->Daylight)) {\r
    return FALSE;\r
  }\r
  return TRUE;\r
}\r
\r
/**\r
  Returns the current time and date information, and the time-keeping capabilities\r
  of the hardware platform.\r
\r
  @param  Time                  A pointer to storage to receive a snapshot of the current time.\r
  @param  Capabilities          An optional pointer to a buffer to receive the real time clock\r
                                device's capabilities.\r
\r
  @retval EFI_SUCCESS           The operation completed successfully.\r
  @retval EFI_INVALID_PARAMETER Time is NULL.\r
  @retval EFI_DEVICE_ERROR      The time could not be retrieved due to hardware error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
GetTime (\r
  OUT EFI_TIME                *Time,\r
  OUT EFI_TIME_CAPABILITIES   *Capabilities\r
  )\r
{\r
  if (Time == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // Set these first so the RealTimeClockLib implementation\r
  // can override them based on its own settings.\r
  //\r
  Time->TimeZone = mTimeSettings.TimeZone;\r
  Time->Daylight = mTimeSettings.Daylight;\r
\r
  return LibGetTime (Time, Capabilities);\r
}\r
\r
\r
\r
/**\r
  Sets the current local time and date information.\r
\r
  @param  Time                  A pointer to the current time.\r
\r
  @retval EFI_SUCCESS           The operation completed successfully.\r
  @retval EFI_INVALID_PARAMETER A time field is out of range.\r
  @retval EFI_DEVICE_ERROR      The time could not be set due due to hardware error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SetTime (\r
  IN EFI_TIME                *Time\r
  )\r
{\r
  EFI_STATUS        Status;\r
  BOOLEAN           TimeSettingsChanged;\r
\r
  if (Time == NULL || !IsTimeValid (Time)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  TimeSettingsChanged = FALSE;\r
  if (mTimeSettings.TimeZone != Time->TimeZone ||\r
      mTimeSettings.Daylight != Time->Daylight) {\r
\r
    mTimeSettings.TimeZone = Time->TimeZone;\r
    mTimeSettings.Daylight = Time->Daylight;\r
    TimeSettingsChanged = TRUE;\r
  }\r
\r
  Status = LibSetTime (Time);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  if (TimeSettingsChanged) {\r
    Status = EfiSetVariable (\r
               (CHAR16 *)mTimeSettingsVariableName,\r
               &gEfiCallerIdGuid,\r
               EFI_VARIABLE_NON_VOLATILE |\r
               EFI_VARIABLE_BOOTSERVICE_ACCESS |\r
               EFI_VARIABLE_RUNTIME_ACCESS,\r
               sizeof (mTimeSettings),\r
               (VOID *)&mTimeSettings);\r
    if (EFI_ERROR (Status)) {\r
      return EFI_DEVICE_ERROR;\r
    }\r
  }\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  Returns the current wakeup alarm clock setting.\r
\r
  @param  Enabled               Indicates if the alarm is currently enabled or disabled.\r
  @param  Pending               Indicates if the alarm signal is pending and requires acknowledgement.\r
  @param  Time                  The current alarm setting.\r
\r
  @retval EFI_SUCCESS           The alarm settings were returned.\r
  @retval EFI_INVALID_PARAMETER Any parameter is NULL.\r
  @retval EFI_DEVICE_ERROR      The wakeup time could not be retrieved due to a hardware error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
GetWakeupTime (\r
  OUT BOOLEAN     *Enabled,\r
  OUT BOOLEAN     *Pending,\r
  OUT EFI_TIME    *Time\r
  )\r
{\r
  return LibGetWakeupTime (Enabled, Pending, Time);\r
}\r
\r
\r
/**\r
  Sets the system wakeup alarm clock time.\r
\r
  @param  Enabled               Enable or disable the wakeup alarm.\r
  @param  Time                  If Enable is TRUE, the time to set the wakeup alarm for.\r
\r
  @retval EFI_SUCCESS           If Enable is TRUE, then the wakeup alarm was enabled. If\r
                                Enable is FALSE, then the wakeup alarm was disabled.\r
  @retval EFI_INVALID_PARAMETER A time field is out of range.\r
  @retval EFI_DEVICE_ERROR      The wakeup time could not be set due to a hardware error.\r
  @retval EFI_UNSUPPORTED       A wakeup timer is not supported on this platform.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SetWakeupTime (\r
  IN BOOLEAN      Enabled,\r
  OUT EFI_TIME    *Time\r
  )\r
{\r
  return LibSetWakeupTime (Enabled, Time);\r
}\r
\r
\r
\r
/**\r
  This is the declaration of an EFI image entry point. This can be the entry point to an application\r
  written to this specification, an EFI boot service driver, or an EFI runtime driver.\r
\r
  @param  ImageHandle           Handle that identifies the loaded image.\r
  @param  SystemTable           System Table for this image.\r
\r
  @retval EFI_SUCCESS           The operation completed successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
InitializeRealTimeClock (\r
  IN EFI_HANDLE                            ImageHandle,\r
  IN EFI_SYSTEM_TABLE                      *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
  UINTN       Size;\r
\r
  Status = LibRtcInitialize (ImageHandle, SystemTable);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  Size = sizeof (mTimeSettings);\r
  Status = EfiGetVariable ((CHAR16 *)mTimeSettingsVariableName,\r
             &gEfiCallerIdGuid, NULL, &Size, (VOID *)&mTimeSettings);\r
  if (EFI_ERROR (Status) ||\r
      !IsValidTimeZone (mTimeSettings.TimeZone) ||\r
      !IsValidDaylight (mTimeSettings.Daylight)) {\r
    DEBUG ((DEBUG_WARN, "%a: using default timezone/daylight settings\n",\r
      __FUNCTION__));\r
\r
    mTimeSettings.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
    mTimeSettings.Daylight = 0;\r
  }\r
\r
  SystemTable->RuntimeServices->GetTime       = GetTime;\r
  SystemTable->RuntimeServices->SetTime       = SetTime;\r
  SystemTable->RuntimeServices->GetWakeupTime = GetWakeupTime;\r
  SystemTable->RuntimeServices->SetWakeupTime = SetWakeupTime;\r
\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &mHandle,\r
                  &gEfiRealTimeClockArchProtocolGuid,\r
                  NULL,\r
                  NULL\r
                  );\r
\r
  return Status;\r
}\r
\r
Commit	Line	Data
2ef2b01e A	1	/** @file\r
2ef2b01e A	2	Implement EFI RealTimeClock runtime services via RTC Lib.\r
3402aac7	3	\r
60274cca	4	Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
517cf877	5	Copyright (c) 2017, Linaro, Ltd. All rights reserved.<BR>\r
3402aac7	6	\r
60274cca	7	This program and the accompanying materials\r
2ef2b01e A	8	are licensed and made available under the terms and conditions of the BSD License\r
	9	which accompanies this distribution. The full text of the license may be found at\r
	10	http://opensource.org/licenses/bsd-license.php\r
	11	\r
	12	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	\r
	15	**/\r
	16	\r
3402aac7	17	#include <PiDxe.h>\r
517cf877 AB	18	#include <Library/DebugLib.h>\r
517cf877 AB	19	#include <Library/RealTimeClockLib.h>\r
2ef2b01e A	20	#include <Library/UefiLib.h>\r
2ef2b01e A	21	#include <Library/UefiBootServicesTableLib.h>\r
517cf877	22	#include <Library/UefiRuntimeLib.h>\r
2ef2b01e A	23	#include <Protocol/RealTimeClock.h>\r
	24	\r
	25	EFI_HANDLE mHandle = NULL;\r
	26	\r
517cf877 AB	27	//\r
	28	// These values can be set by SetTime () and need to be returned by GetTime ()\r
	29	// but cannot usually be kept by the RTC hardware, so we store them in a UEFI\r
	30	// variable instead.\r
	31	//\r
	32	typedef struct {\r
	33	INT16 TimeZone;\r
	34	UINT8 Daylight;\r
	35	} NON_VOLATILE_TIME_SETTINGS;\r
	36	\r
	37	STATIC CONST CHAR16 mTimeSettingsVariableName[] = L"RtcTimeSettings";\r
	38	STATIC NON_VOLATILE_TIME_SETTINGS mTimeSettings;\r
	39	\r
	40	STATIC\r
	41	BOOLEAN\r
	42	IsValidTimeZone (\r
	43	IN INT16 TimeZone\r
	44	)\r
	45	{\r
	46	return TimeZone == EFI_UNSPECIFIED_TIMEZONE \|\|\r
	47	(TimeZone >= -1440 && TimeZone <= 1440);\r
	48	}\r
	49	\r
	50	STATIC\r
	51	BOOLEAN\r
	52	IsValidDaylight (\r
	53	IN INT8 Daylight\r
	54	)\r
	55	{\r
	56	return Daylight == 0 \|\|\r
	57	Daylight == EFI_TIME_ADJUST_DAYLIGHT \|\|\r
	58	Daylight == (EFI_TIME_ADJUST_DAYLIGHT \| EFI_TIME_IN_DAYLIGHT);\r
	59	}\r
2ef2b01e	60	\r
517cf877 AB	61	STATIC\r
	62	BOOLEAN\r
	63	EFIAPI\r
	64	IsLeapYear (\r
	65	IN EFI_TIME *Time\r
	66	)\r
	67	{\r
	68	if (Time->Year % 4 == 0) {\r
	69	if (Time->Year % 100 == 0) {\r
	70	if (Time->Year % 400 == 0) {\r
	71	return TRUE;\r
	72	} else {\r
	73	return FALSE;\r
	74	}\r
	75	} else {\r
	76	return TRUE;\r
	77	}\r
	78	} else {\r
	79	return FALSE;\r
	80	}\r
	81	}\r
	82	\r
	83	STATIC CONST INTN mDayOfMonth[12] = {\r
	84	31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31\r
	85	};\r
	86	\r
	87	STATIC\r
	88	BOOLEAN\r
	89	EFIAPI\r
	90	IsDayValid (\r
	91	IN EFI_TIME *Time\r
	92	)\r
	93	{\r
	94	ASSERT (Time->Day >= 1);\r
	95	ASSERT (Time->Day <= mDayOfMonth[Time->Month - 1]);\r
	96	ASSERT (Time->Month != 2 \|\| IsLeapYear (Time) \|\| Time->Day <= 28);\r
	97	\r
	98	if (Time->Day < 1 \|\|\r
	99	Time->Day > mDayOfMonth[Time->Month - 1] \|\|\r
	100	(Time->Month == 2 && !IsLeapYear (Time) && Time->Day > 28)) {\r
	101	return FALSE;\r
	102	}\r
	103	return TRUE;\r
	104	}\r
	105	\r
	106	STATIC\r
	107	BOOLEAN\r
	108	EFIAPI\r
	109	IsTimeValid(\r
	110	IN EFI_TIME *Time\r
	111	)\r
	112	{\r
	113	// Check the input parameters are within the range specified by UEFI\r
	114	if (Time->Year < 1900 \|\|\r
	115	Time->Year > 9999 \|\|\r
	116	Time->Month < 1 \|\|\r
	117	Time->Month > 12 \|\|\r
	118	!IsDayValid (Time) \|\|\r
	119	Time->Hour > 23 \|\|\r
	120	Time->Minute > 59 \|\|\r
	121	Time->Second > 59 \|\|\r
	122	!IsValidTimeZone (Time->TimeZone) \|\|\r
	123	!IsValidDaylight (Time->Daylight)) {\r
	124	return FALSE;\r
125	}\r
126	return TRUE;\r
127	}\r
2ef2b01e A	128	\r
	129	/**\r
	130	Returns the current time and date information, and the time-keeping capabilities\r
	131	of the hardware platform.\r
	132	\r
	133	@param Time A pointer to storage to receive a snapshot of the current time.\r
	134	@param Capabilities An optional pointer to a buffer to receive the real time clock\r
	135	device's capabilities.\r
	136	\r
	137	@retval EFI_SUCCESS The operation completed successfully.\r
	138	@retval EFI_INVALID_PARAMETER Time is NULL.\r
	139	@retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.\r
	140	\r
	141	**/\r
	142	EFI_STATUS\r
	143	EFIAPI\r
	144	GetTime (\r
	145	OUT EFI_TIME *Time,\r
517cf877	146	OUT EFI_TIME_CAPABILITIES *Capabilities\r
2ef2b01e A	147	)\r
2ef2b01e A	148	{\r
517cf877 AB	149	if (Time == NULL) {\r
	150	return EFI_INVALID_PARAMETER;\r
	151	}\r
	152	\r
	153	//\r
	154	// Set these first so the RealTimeClockLib implementation\r
	155	// can override them based on its own settings.\r
	156	//\r
	157	Time->TimeZone = mTimeSettings.TimeZone;\r
	158	Time->Daylight = mTimeSettings.Daylight;\r
	159	\r
2ef2b01e A	160	return LibGetTime (Time, Capabilities);\r
	161	}\r
	162	\r
	163	\r
	164	\r
	165	/**\r
	166	Sets the current local time and date information.\r
	167	\r
	168	@param Time A pointer to the current time.\r
	169	\r
	170	@retval EFI_SUCCESS The operation completed successfully.\r
	171	@retval EFI_INVALID_PARAMETER A time field is out of range.\r
	172	@retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.\r
	173	\r
	174	**/\r
	175	EFI_STATUS\r
	176	EFIAPI\r
	177	SetTime (\r
	178	IN EFI_TIME *Time\r
	179	)\r
	180	{\r
517cf877 AB	181	EFI_STATUS Status;\r
	182	BOOLEAN TimeSettingsChanged;\r
	183	\r
	184	if (Time == NULL \|\| !IsTimeValid (Time)) {\r
	185	return EFI_INVALID_PARAMETER;\r
	186	}\r
	187	\r
	188	TimeSettingsChanged = FALSE;\r
	189	if (mTimeSettings.TimeZone != Time->TimeZone \|\|\r
	190	mTimeSettings.Daylight != Time->Daylight) {\r
	191	\r
	192	mTimeSettings.TimeZone = Time->TimeZone;\r
	193	mTimeSettings.Daylight = Time->Daylight;\r
	194	TimeSettingsChanged = TRUE;\r
	195	}\r
	196	\r
	197	Status = LibSetTime (Time);\r
	198	if (EFI_ERROR (Status)) {\r
	199	return Status;\r
	200	}\r
	201	\r
	202	if (TimeSettingsChanged) {\r
	203	Status = EfiSetVariable (\r
	204	(CHAR16 *)mTimeSettingsVariableName,\r
	205	&gEfiCallerIdGuid,\r
	206	EFI_VARIABLE_NON_VOLATILE \|\r
	207	EFI_VARIABLE_BOOTSERVICE_ACCESS \|\r
	208	EFI_VARIABLE_RUNTIME_ACCESS,\r
	209	sizeof (mTimeSettings),\r
	210	(VOID *)&mTimeSettings);\r
	211	if (EFI_ERROR (Status)) {\r
	212	return EFI_DEVICE_ERROR;\r
	213	}\r
	214	}\r
	215	return EFI_SUCCESS;\r
2ef2b01e A	216	}\r
	217	\r
	218	\r
	219	/**\r
	220	Returns the current wakeup alarm clock setting.\r
	221	\r
	222	@param Enabled Indicates if the alarm is currently enabled or disabled.\r
	223	@param Pending Indicates if the alarm signal is pending and requires acknowledgement.\r
	224	@param Time The current alarm setting.\r
	225	\r
	226	@retval EFI_SUCCESS The alarm settings were returned.\r
	227	@retval EFI_INVALID_PARAMETER Any parameter is NULL.\r
	228	@retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.\r
	229	\r
	230	**/\r
	231	EFI_STATUS\r
	232	EFIAPI\r
	233	GetWakeupTime (\r
	234	OUT BOOLEAN *Enabled,\r
	235	OUT BOOLEAN *Pending,\r
	236	OUT EFI_TIME *Time\r
	237	)\r
	238	{\r
	239	return LibGetWakeupTime (Enabled, Pending, Time);\r
	240	}\r
	241	\r
	242	\r
	243	/**\r
	244	Sets the system wakeup alarm clock time.\r
	245	\r
	246	@param Enabled Enable or disable the wakeup alarm.\r
	247	@param Time If Enable is TRUE, the time to set the wakeup alarm for.\r
	248	\r
	249	@retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If\r
	250	Enable is FALSE, then the wakeup alarm was disabled.\r
	251	@retval EFI_INVALID_PARAMETER A time field is out of range.\r
	252	@retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.\r
	253	@retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.\r
	254	\r
	255	**/\r
	256	EFI_STATUS\r
	257	EFIAPI\r
	258	SetWakeupTime (\r
	259	IN BOOLEAN Enabled,\r
	260	OUT EFI_TIME *Time\r
	261	)\r
	262	{\r
	263	return LibSetWakeupTime (Enabled, Time);\r
	264	}\r
	265	\r
	266	\r
	267	\r
	268	/**\r
	269	This is the declaration of an EFI image entry point. This can be the entry point to an application\r
	270	written to this specification, an EFI boot service driver, or an EFI runtime driver.\r
	271	\r
	272	@param ImageHandle Handle that identifies the loaded image.\r
	273	@param SystemTable System Table for this image.\r
	274	\r
	275	@retval EFI_SUCCESS The operation completed successfully.\r
	276	\r
	277	**/\r
	278	EFI_STATUS\r
	279	EFIAPI\r
280	InitializeRealTimeClock (\r
281	IN EFI_HANDLE ImageHandle,\r
282	IN EFI_SYSTEM_TABLE *SystemTable\r
283	)\r
284	{\r
285	EFI_STATUS Status;\r
517cf877	286	UINTN Size;\r
2ef2b01e	287	\r
da6ae666 LD	288	Status = LibRtcInitialize (ImageHandle, SystemTable);\r
	289	if (EFI_ERROR (Status)) {\r
	290	return Status;\r
	291	}\r
2ef2b01e	292	\r
517cf877 AB	293	Size = sizeof (mTimeSettings);\r
	294	Status = EfiGetVariable ((CHAR16 *)mTimeSettingsVariableName,\r
	295	&gEfiCallerIdGuid, NULL, &Size, (VOID *)&mTimeSettings);\r
	296	if (EFI_ERROR (Status) \|\|\r
	297	!IsValidTimeZone (mTimeSettings.TimeZone) \|\|\r
	298	!IsValidDaylight (mTimeSettings.Daylight)) {\r
	299	DEBUG ((DEBUG_WARN, "%a: using default timezone/daylight settings\n",\r
	300	__FUNCTION__));\r
	301	\r
	302	mTimeSettings.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
	303	mTimeSettings.Daylight = 0;\r
	304	}\r
	305	\r
2ef2b01e A	306	SystemTable->RuntimeServices->GetTime = GetTime;\r
	307	SystemTable->RuntimeServices->SetTime = SetTime;\r
	308	SystemTable->RuntimeServices->GetWakeupTime = GetWakeupTime;\r
	309	SystemTable->RuntimeServices->SetWakeupTime = SetWakeupTime;\r
	310	\r
	311	Status = gBS->InstallMultipleProtocolInterfaces (\r
	312	&mHandle,\r
	313	&gEfiRealTimeClockArchProtocolGuid,\r
	314	NULL,\r
	315	NULL\r
	316	);\r
	317	\r
	318	return Status;\r
	319	}\r
	320	\r