[mirror_edk2.git] / Omap35xxPkg / Library / RealTimeClockLib / RealTimeClockLib.c

/** @file\r
*\r
*  Copyright (c) 2011, ARM Limited. All rights reserved.\r
*\r
*  SPDX-License-Identifier: BSD-2-Clause-Patent\r
*\r
**/\r
\r
#include <Uefi.h>\r
\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiRuntimeServicesTableLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/IoLib.h>\r
\r
#include <Protocol/RealTimeClock.h>\r
#include <Protocol/EmbeddedExternalDevice.h>\r
\r
#include <Omap3530/Omap3530.h>\r
#include <TPS65950.h>\r
\r
\r
EMBEDDED_EXTERNAL_DEVICE   *gTPS65950;\r
INT16                      TimeZone = EFI_UNSPECIFIED_TIMEZONE;\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
LibGetTime (\r
  OUT EFI_TIME                *Time,\r
  OUT EFI_TIME_CAPABILITIES   *Capabilities\r
  )\r
{\r
  EFI_STATUS            Status;\r
  UINT8                 Data;\r
  EFI_TPL               OldTpl;\r
\r
  if (Time == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r
\r
  /* Get time and date */\r
  ZeroMem(Time, sizeof(EFI_TIME));\r
\r
  // Latch values\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Data |= BIT6;\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  // Read registers\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Time->Year = 2000 + ((Data >> 4) & 0xF) * 10 + (Data & 0xF);\r
\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Time->Month = ((Data >> 4) & 0x1) * 10 + (Data & 0xF);\r
\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Time->Day = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);\r
\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Time->Hour = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);\r
\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Time->Minute = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);\r
\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
  Time->Second = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);\r
\r
  Time->TimeZone = TimeZone;\r
  // TODO: check what to use here\r
  Time->Daylight = EFI_TIME_ADJUST_DAYLIGHT;\r
\r
  // Set capabilities\r
\r
  // TODO: Set real capabilities\r
  if (Capabilities != NULL) {\r
    Capabilities->Resolution = 1;\r
    Capabilities->Accuracy = 50000000;\r
    Capabilities->SetsToZero = FALSE;\r
  }\r
\r
EXIT:\r
  gBS->RestoreTPL(OldTpl);\r
\r
  return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;\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
LibSetTime (\r
  IN EFI_TIME                *Time\r
  )\r
{\r
  EFI_STATUS Status;\r
  UINT8      Data;\r
  UINT8      MonthDayCount[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };\r
  EFI_TPL    OldTpl;\r
\r
  // Input validation according both to UEFI spec and hardware constraints\r
  // UEFI spec says valid year range is 1900-9999 but TPS only supports 2000-2099\r
  if ( (Time == NULL)\r
    || (Time->Year < 2000 || Time->Year > 2099)\r
    || (Time->Month < 1 || Time->Month > 12)\r
    || (Time->Day < 1 || Time->Day > MonthDayCount[Time->Month])\r
    || (Time->Hour > 23)\r
    || (Time->Minute > 59)\r
    || (Time->Second > 59)\r
    || (Time->Nanosecond > 999999999)\r
    || ((Time->TimeZone < -1440 || Time->TimeZone > 1440) && Time->TimeZone != 2047)\r
  ) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r
\r
  Data = Time->Year - 2000;\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  Data = ((Time->Month / 10) << 4) | (Time->Month % 10);\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  Data = ((Time->Day / 10) << 4) | (Time->Day % 10);\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  Data = ((Time->Hour / 10) << 4) | (Time->Hour % 10);\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  Data = ((Time->Minute / 10) << 4) | (Time->Minute % 10);\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  Data = ((Time->Second / 10) << 4) | (Time->Second % 10);\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);\r
  if (Status != EFI_SUCCESS) goto EXIT;\r
\r
  TimeZone = Time->TimeZone;\r
\r
EXIT:\r
  gBS->RestoreTPL(OldTpl);\r
\r
  return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;\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
LibGetWakeupTime (\r
  OUT BOOLEAN     *Enabled,\r
  OUT BOOLEAN     *Pending,\r
  OUT EFI_TIME    *Time\r
  )\r
{\r
  return EFI_UNSUPPORTED;\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
LibSetWakeupTime (\r
  IN BOOLEAN      Enabled,\r
  OUT EFI_TIME    *Time\r
  )\r
{\r
  return EFI_UNSUPPORTED;\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
LibRtcInitialize (\r
  IN EFI_HANDLE                            ImageHandle,\r
  IN EFI_SYSTEM_TABLE                      *SystemTable\r
  )\r
{\r
  EFI_STATUS    Status;\r
  EFI_HANDLE    Handle;\r
  UINT8         Data;\r
  EFI_TPL       OldTpl;\r
\r
  Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);\r
  ASSERT_EFI_ERROR(Status);\r
\r
  OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r
  Data = 1;\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r
  ASSERT_EFI_ERROR(Status);\r
  gBS->RestoreTPL(OldTpl);\r
\r
  // Setup the setters and getters\r
  gRT->GetTime       = LibGetTime;\r
  gRT->SetTime       = LibSetTime;\r
  gRT->GetWakeupTime = LibGetWakeupTime;\r
  gRT->SetWakeupTime = LibSetWakeupTime;\r
\r
  // Install the protocol\r
  Handle = NULL;\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &Handle,\r
                  &gEfiRealTimeClockArchProtocolGuid,  NULL,\r
                  NULL\r
                 );\r
\r
  return Status;\r
}\r
\r
/**\r
  Fixup internal data so that EFI can be call in virtual mode.\r
  Call the passed in Child Notify event and convert any pointers in\r
  lib to virtual mode.\r
\r
  @param[in]    Event   The Event that is being processed\r
  @param[in]    Context Event Context\r
**/\r
VOID\r
EFIAPI\r
LibRtcVirtualNotifyEvent (\r
  IN EFI_EVENT        Event,\r
  IN VOID             *Context\r
  )\r
{\r
  return;\r
}\r
Commit	Line	Data
1e57a462	1	/** @file\r
	2	*\r
	3	* Copyright (c) 2011, ARM Limited. All rights reserved.\r
1e57a462	4	*\r
538311f7	5	* SPDX-License-Identifier: BSD-2-Clause-Patent\r
1e57a462	6	*\r
	7	**/\r
	8	\r
	9	#include <Uefi.h>\r
	10	\r
	11	#include <Library/BaseMemoryLib.h>\r
	12	#include <Library/UefiBootServicesTableLib.h>\r
	13	#include <Library/UefiRuntimeServicesTableLib.h>\r
	14	#include <Library/DebugLib.h>\r
	15	#include <Library/IoLib.h>\r
	16	\r
	17	#include <Protocol/RealTimeClock.h>\r
	18	#include <Protocol/EmbeddedExternalDevice.h>\r
	19	\r
	20	#include <Omap3530/Omap3530.h>\r
	21	#include <TPS65950.h>\r
	22	\r
	23	\r
	24	EMBEDDED_EXTERNAL_DEVICE *gTPS65950;\r
	25	INT16 TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
	26	\r
	27	/**\r
	28	Returns the current time and date information, and the time-keeping capabilities\r
	29	of the hardware platform.\r
	30	\r
	31	@param Time A pointer to storage to receive a snapshot of the current time.\r
	32	@param Capabilities An optional pointer to a buffer to receive the real time clock\r
	33	device's capabilities.\r
	34	\r
	35	@retval EFI_SUCCESS The operation completed successfully.\r
	36	@retval EFI_INVALID_PARAMETER Time is NULL.\r
	37	@retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.\r
	38	\r
	39	**/\r
	40	EFI_STATUS\r
	41	EFIAPI\r
	42	LibGetTime (\r
	43	OUT EFI_TIME *Time,\r
	44	OUT EFI_TIME_CAPABILITIES *Capabilities\r
	45	)\r
	46	{\r
	47	EFI_STATUS Status;\r
	48	UINT8 Data;\r
	49	EFI_TPL OldTpl;\r
	50	\r
	51	if (Time == NULL) {\r
	52	return EFI_INVALID_PARAMETER;\r
	53	}\r
	54	\r
	55	OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r
	56	\r
	57	/* Get time and date */\r
	58	ZeroMem(Time, sizeof(EFI_TIME));\r
	59	\r
	60	// Latch values\r
	61	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r
	62	if (Status != EFI_SUCCESS) goto EXIT;\r
	63	Data \|= BIT6;\r
	64	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r
	65	if (Status != EFI_SUCCESS) goto EXIT;\r
	66	\r
	67	// Read registers\r
	68	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);\r
	69	if (Status != EFI_SUCCESS) goto EXIT;\r
70	Time->Year = 2000 + ((Data >> 4) & 0xF) * 10 + (Data & 0xF);\r
71	\r
72	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);\r
73	if (Status != EFI_SUCCESS) goto EXIT;\r
74	Time->Month = ((Data >> 4) & 0x1) * 10 + (Data & 0xF);\r
75	\r
76	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);\r
77	if (Status != EFI_SUCCESS) goto EXIT;\r
78	Time->Day = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);\r
79	\r
80	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);\r
81	if (Status != EFI_SUCCESS) goto EXIT;\r
82	Time->Hour = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);\r
83	\r
84	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);\r
85	if (Status != EFI_SUCCESS) goto EXIT;\r
86	Time->Minute = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);\r
87	\r
88	Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);\r
89	if (Status != EFI_SUCCESS) goto EXIT;\r
90	Time->Second = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);\r
91	\r
92	Time->TimeZone = TimeZone;\r
93	// TODO: check what to use here\r
94	Time->Daylight = EFI_TIME_ADJUST_DAYLIGHT;\r
95	\r
96	// Set capabilities\r
97	\r
98	// TODO: Set real capabilities\r
99	if (Capabilities != NULL) {\r
100	Capabilities->Resolution = 1;\r
101	Capabilities->Accuracy = 50000000;\r
102	Capabilities->SetsToZero = FALSE;\r
103	}\r
104	\r
105	EXIT:\r
106	gBS->RestoreTPL(OldTpl);\r
107	\r
108	return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;\r
109	}\r
110	\r
111	/**\r
112	Sets the current local time and date information.\r
113	\r
114	@param Time A pointer to the current time.\r
115	\r
116	@retval EFI_SUCCESS The operation completed successfully.\r
117	@retval EFI_INVALID_PARAMETER A time field is out of range.\r
118	@retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.\r
119	\r
120	**/\r
121	EFI_STATUS\r
122	EFIAPI\r
123	LibSetTime (\r
124	IN EFI_TIME *Time\r
125	)\r
126	{\r
127	EFI_STATUS Status;\r
128	UINT8 Data;\r
129	UINT8 MonthDayCount[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };\r
130	EFI_TPL OldTpl;\r
131	\r
132	// Input validation according both to UEFI spec and hardware constraints\r
133	// UEFI spec says valid year range is 1900-9999 but TPS only supports 2000-2099\r
134	if ( (Time == NULL)\r
135	\|\| (Time->Year < 2000 \|\| Time->Year > 2099)\r
136	\|\| (Time->Month < 1 \|\| Time->Month > 12)\r
137	\|\| (Time->Day < 1 \|\| Time->Day > MonthDayCount[Time->Month])\r
138	\|\| (Time->Hour > 23)\r
139	\|\| (Time->Minute > 59)\r
140	\|\| (Time->Second > 59)\r
141	\|\| (Time->Nanosecond > 999999999)\r
142	\|\| ((Time->TimeZone < -1440 \|\| Time->TimeZone > 1440) && Time->TimeZone != 2047)\r
143	) {\r
144	return EFI_INVALID_PARAMETER;\r
145	}\r
146	\r
147	OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r
148	\r
149	Data = Time->Year - 2000;\r
150	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);\r
151	if (Status != EFI_SUCCESS) goto EXIT;\r
152	\r
153	Data = ((Time->Month / 10) << 4) \| (Time->Month % 10);\r
154	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);\r
155	if (Status != EFI_SUCCESS) goto EXIT;\r
156	\r
157	Data = ((Time->Day / 10) << 4) \| (Time->Day % 10);\r
158	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);\r
159	if (Status != EFI_SUCCESS) goto EXIT;\r
160	\r
161	Data = ((Time->Hour / 10) << 4) \| (Time->Hour % 10);\r
162	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);\r
163	if (Status != EFI_SUCCESS) goto EXIT;\r
164	\r
165	Data = ((Time->Minute / 10) << 4) \| (Time->Minute % 10);\r
166	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);\r
167	if (Status != EFI_SUCCESS) goto EXIT;\r
168	\r
169	Data = ((Time->Second / 10) << 4) \| (Time->Second % 10);\r
170	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);\r
171	if (Status != EFI_SUCCESS) goto EXIT;\r
172	\r
173	TimeZone = Time->TimeZone;\r
174	\r
175	EXIT:\r
176	gBS->RestoreTPL(OldTpl);\r
177	\r
178	return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;\r
179	}\r
180	\r
181	/**\r
182	Returns the current wakeup alarm clock setting.\r
183	\r
184	@param Enabled Indicates if the alarm is currently enabled or disabled.\r
185	@param Pending Indicates if the alarm signal is pending and requires acknowledgement.\r
186	@param Time The current alarm setting.\r
187	\r
188	@retval EFI_SUCCESS The alarm settings were returned.\r
189	@retval EFI_INVALID_PARAMETER Any parameter is NULL.\r
190	@retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.\r
191	\r
192	**/\r
193	EFI_STATUS\r
194	EFIAPI\r
195	LibGetWakeupTime (\r
196	OUT BOOLEAN *Enabled,\r
197	OUT BOOLEAN *Pending,\r
198	OUT EFI_TIME *Time\r
199	)\r
200	{\r
201	return EFI_UNSUPPORTED;\r
202	}\r
203	\r
204	/**\r
205	Sets the system wakeup alarm clock time.\r
206	\r
207	@param Enabled Enable or disable the wakeup alarm.\r
208	@param Time If Enable is TRUE, the time to set the wakeup alarm for.\r
209	\r
210	@retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If\r
211	Enable is FALSE, then the wakeup alarm was disabled.\r
212	@retval EFI_INVALID_PARAMETER A time field is out of range.\r
213	@retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.\r
214	@retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.\r
215	\r
216	**/\r
217	EFI_STATUS\r
218	EFIAPI\r
219	LibSetWakeupTime (\r
220	IN BOOLEAN Enabled,\r
221	OUT EFI_TIME *Time\r
222	)\r
223	{\r
224	return EFI_UNSUPPORTED;\r
225	}\r
226	\r
227	/**\r
228	This is the declaration of an EFI image entry point. This can be the entry point to an application\r
229	written to this specification, an EFI boot service driver, or an EFI runtime driver.\r
230	\r
231	@param ImageHandle Handle that identifies the loaded image.\r
232	@param SystemTable System Table for this image.\r
233	\r
234	@retval EFI_SUCCESS The operation completed successfully.\r
235	\r
236	**/\r
237	EFI_STATUS\r
238	EFIAPI\r
239	LibRtcInitialize (\r
240	IN EFI_HANDLE ImageHandle,\r
241	IN EFI_SYSTEM_TABLE *SystemTable\r
242	)\r
243	{\r
244	EFI_STATUS Status;\r
245	EFI_HANDLE Handle;\r
246	UINT8 Data;\r
247	EFI_TPL OldTpl;\r
248	\r
249	Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);\r
250	ASSERT_EFI_ERROR(Status);\r
251	\r
252	OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r
253	Data = 1;\r
254	Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r
255	ASSERT_EFI_ERROR(Status);\r
256	gBS->RestoreTPL(OldTpl);\r
257	\r
258	// Setup the setters and getters\r
259	gRT->GetTime = LibGetTime;\r
260	gRT->SetTime = LibSetTime;\r
261	gRT->GetWakeupTime = LibGetWakeupTime;\r
262	gRT->SetWakeupTime = LibSetWakeupTime;\r
263	\r
264	// Install the protocol\r
265	Handle = NULL;\r
266	Status = gBS->InstallMultipleProtocolInterfaces (\r
267	&Handle,\r
268	&gEfiRealTimeClockArchProtocolGuid, NULL,\r
269	NULL\r
270	);\r
271	\r
272	return Status;\r
273	}\r
274	\r
275	/**\r
276	Fixup internal data so that EFI can be call in virtual mode.\r
277	Call the passed in Child Notify event and convert any pointers in\r
278	lib to virtual mode.\r
279	\r
280	@param[in] Event The Event that is being processed\r
281	@param[in] Context Event Context\r
282	**/\r
283	VOID\r
284	EFIAPI\r
285	LibRtcVirtualNotifyEvent (\r
286	IN EFI_EVENT Event,\r
287	IN VOID *Context\r
288	)\r
289	{\r
290	return;\r
291	}\r