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1e57a462 | 1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2011, ARM Limited. All rights reserved.\r | |
1e57a462 | 4 | *\r |
3402aac7 RC |
5 | * This program and the accompanying materials\r |
6 | * are licensed and made available under the terms and conditions of the BSD License\r | |
7 | * which accompanies this distribution. The full text of the license may be found at\r | |
8 | * http://opensource.org/licenses/bsd-license.php\r | |
9 | *\r | |
10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
1e57a462 | 12 | *\r |
13 | **/\r | |
14 | \r | |
15 | #include <Uefi.h>\r | |
16 | \r | |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/UefiBootServicesTableLib.h>\r | |
19 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
20 | #include <Library/DebugLib.h>\r | |
21 | #include <Library/IoLib.h>\r | |
22 | \r | |
23 | #include <Protocol/RealTimeClock.h>\r | |
24 | #include <Protocol/EmbeddedExternalDevice.h>\r | |
25 | \r | |
26 | #include <Omap3530/Omap3530.h>\r | |
27 | #include <TPS65950.h>\r | |
28 | \r | |
29 | \r | |
30 | EMBEDDED_EXTERNAL_DEVICE *gTPS65950;\r | |
31 | INT16 TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r | |
32 | \r | |
33 | /**\r | |
34 | Returns the current time and date information, and the time-keeping capabilities\r | |
35 | of the hardware platform.\r | |
36 | \r | |
37 | @param Time A pointer to storage to receive a snapshot of the current time.\r | |
38 | @param Capabilities An optional pointer to a buffer to receive the real time clock\r | |
39 | device's capabilities.\r | |
40 | \r | |
41 | @retval EFI_SUCCESS The operation completed successfully.\r | |
42 | @retval EFI_INVALID_PARAMETER Time is NULL.\r | |
43 | @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.\r | |
44 | \r | |
45 | **/\r | |
46 | EFI_STATUS\r | |
47 | EFIAPI\r | |
48 | LibGetTime (\r | |
49 | OUT EFI_TIME *Time,\r | |
50 | OUT EFI_TIME_CAPABILITIES *Capabilities\r | |
51 | )\r | |
52 | {\r | |
53 | EFI_STATUS Status;\r | |
54 | UINT8 Data;\r | |
55 | EFI_TPL OldTpl;\r | |
56 | \r | |
57 | if (Time == NULL) {\r | |
58 | return EFI_INVALID_PARAMETER;\r | |
59 | }\r | |
60 | \r | |
61 | OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r | |
62 | \r | |
63 | /* Get time and date */\r | |
64 | ZeroMem(Time, sizeof(EFI_TIME));\r | |
65 | \r | |
66 | // Latch values\r | |
67 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r | |
68 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
69 | Data |= BIT6;\r | |
70 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r | |
71 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
72 | \r | |
73 | // Read registers\r | |
74 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);\r | |
75 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
76 | Time->Year = 2000 + ((Data >> 4) & 0xF) * 10 + (Data & 0xF);\r | |
77 | \r | |
78 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);\r | |
79 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
80 | Time->Month = ((Data >> 4) & 0x1) * 10 + (Data & 0xF);\r | |
81 | \r | |
82 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);\r | |
83 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
84 | Time->Day = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);\r | |
85 | \r | |
86 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);\r | |
87 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
88 | Time->Hour = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);\r | |
89 | \r | |
90 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);\r | |
91 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
92 | Time->Minute = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);\r | |
93 | \r | |
94 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);\r | |
95 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
96 | Time->Second = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);\r | |
97 | \r | |
98 | Time->TimeZone = TimeZone;\r | |
99 | // TODO: check what to use here\r | |
100 | Time->Daylight = EFI_TIME_ADJUST_DAYLIGHT;\r | |
101 | \r | |
102 | // Set capabilities\r | |
103 | \r | |
104 | // TODO: Set real capabilities\r | |
105 | if (Capabilities != NULL) {\r | |
106 | Capabilities->Resolution = 1;\r | |
107 | Capabilities->Accuracy = 50000000;\r | |
108 | Capabilities->SetsToZero = FALSE;\r | |
109 | }\r | |
110 | \r | |
111 | EXIT:\r | |
112 | gBS->RestoreTPL(OldTpl);\r | |
113 | \r | |
114 | return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;\r | |
115 | }\r | |
116 | \r | |
117 | /**\r | |
118 | Sets the current local time and date information.\r | |
119 | \r | |
120 | @param Time A pointer to the current time.\r | |
121 | \r | |
122 | @retval EFI_SUCCESS The operation completed successfully.\r | |
123 | @retval EFI_INVALID_PARAMETER A time field is out of range.\r | |
124 | @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.\r | |
125 | \r | |
126 | **/\r | |
127 | EFI_STATUS\r | |
128 | EFIAPI\r | |
129 | LibSetTime (\r | |
130 | IN EFI_TIME *Time\r | |
131 | )\r | |
132 | {\r | |
133 | EFI_STATUS Status;\r | |
134 | UINT8 Data;\r | |
135 | UINT8 MonthDayCount[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };\r | |
136 | EFI_TPL OldTpl;\r | |
137 | \r | |
138 | // Input validation according both to UEFI spec and hardware constraints\r | |
139 | // UEFI spec says valid year range is 1900-9999 but TPS only supports 2000-2099\r | |
140 | if ( (Time == NULL)\r | |
141 | || (Time->Year < 2000 || Time->Year > 2099)\r | |
142 | || (Time->Month < 1 || Time->Month > 12)\r | |
143 | || (Time->Day < 1 || Time->Day > MonthDayCount[Time->Month])\r | |
144 | || (Time->Hour > 23)\r | |
145 | || (Time->Minute > 59)\r | |
146 | || (Time->Second > 59)\r | |
147 | || (Time->Nanosecond > 999999999)\r | |
148 | || ((Time->TimeZone < -1440 || Time->TimeZone > 1440) && Time->TimeZone != 2047)\r | |
149 | ) {\r | |
150 | return EFI_INVALID_PARAMETER;\r | |
151 | }\r | |
152 | \r | |
153 | OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r | |
154 | \r | |
155 | Data = Time->Year - 2000;\r | |
156 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);\r | |
157 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
158 | \r | |
159 | Data = ((Time->Month / 10) << 4) | (Time->Month % 10);\r | |
160 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);\r | |
161 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
162 | \r | |
163 | Data = ((Time->Day / 10) << 4) | (Time->Day % 10);\r | |
164 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);\r | |
165 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
166 | \r | |
167 | Data = ((Time->Hour / 10) << 4) | (Time->Hour % 10);\r | |
168 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);\r | |
169 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
170 | \r | |
171 | Data = ((Time->Minute / 10) << 4) | (Time->Minute % 10);\r | |
172 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);\r | |
173 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
174 | \r | |
175 | Data = ((Time->Second / 10) << 4) | (Time->Second % 10);\r | |
176 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);\r | |
177 | if (Status != EFI_SUCCESS) goto EXIT;\r | |
178 | \r | |
179 | TimeZone = Time->TimeZone;\r | |
180 | \r | |
181 | EXIT:\r | |
182 | gBS->RestoreTPL(OldTpl);\r | |
183 | \r | |
184 | return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;\r | |
185 | }\r | |
186 | \r | |
187 | /**\r | |
188 | Returns the current wakeup alarm clock setting.\r | |
189 | \r | |
190 | @param Enabled Indicates if the alarm is currently enabled or disabled.\r | |
191 | @param Pending Indicates if the alarm signal is pending and requires acknowledgement.\r | |
192 | @param Time The current alarm setting.\r | |
193 | \r | |
194 | @retval EFI_SUCCESS The alarm settings were returned.\r | |
195 | @retval EFI_INVALID_PARAMETER Any parameter is NULL.\r | |
196 | @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.\r | |
197 | \r | |
198 | **/\r | |
199 | EFI_STATUS\r | |
200 | EFIAPI\r | |
201 | LibGetWakeupTime (\r | |
202 | OUT BOOLEAN *Enabled,\r | |
203 | OUT BOOLEAN *Pending,\r | |
204 | OUT EFI_TIME *Time\r | |
205 | )\r | |
206 | {\r | |
207 | return EFI_UNSUPPORTED;\r | |
208 | }\r | |
209 | \r | |
210 | /**\r | |
211 | Sets the system wakeup alarm clock time.\r | |
212 | \r | |
213 | @param Enabled Enable or disable the wakeup alarm.\r | |
214 | @param Time If Enable is TRUE, the time to set the wakeup alarm for.\r | |
215 | \r | |
216 | @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If\r | |
217 | Enable is FALSE, then the wakeup alarm was disabled.\r | |
218 | @retval EFI_INVALID_PARAMETER A time field is out of range.\r | |
219 | @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.\r | |
220 | @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.\r | |
221 | \r | |
222 | **/\r | |
223 | EFI_STATUS\r | |
224 | EFIAPI\r | |
225 | LibSetWakeupTime (\r | |
226 | IN BOOLEAN Enabled,\r | |
227 | OUT EFI_TIME *Time\r | |
228 | )\r | |
229 | {\r | |
230 | return EFI_UNSUPPORTED;\r | |
231 | }\r | |
232 | \r | |
233 | /**\r | |
234 | This is the declaration of an EFI image entry point. This can be the entry point to an application\r | |
235 | written to this specification, an EFI boot service driver, or an EFI runtime driver.\r | |
236 | \r | |
237 | @param ImageHandle Handle that identifies the loaded image.\r | |
238 | @param SystemTable System Table for this image.\r | |
239 | \r | |
240 | @retval EFI_SUCCESS The operation completed successfully.\r | |
241 | \r | |
242 | **/\r | |
243 | EFI_STATUS\r | |
244 | EFIAPI\r | |
245 | LibRtcInitialize (\r | |
246 | IN EFI_HANDLE ImageHandle,\r | |
247 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
248 | )\r | |
249 | {\r | |
250 | EFI_STATUS Status;\r | |
251 | EFI_HANDLE Handle;\r | |
252 | UINT8 Data;\r | |
253 | EFI_TPL OldTpl;\r | |
254 | \r | |
255 | Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);\r | |
256 | ASSERT_EFI_ERROR(Status);\r | |
257 | \r | |
258 | OldTpl = gBS->RaiseTPL(TPL_NOTIFY);\r | |
259 | Data = 1;\r | |
260 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);\r | |
261 | ASSERT_EFI_ERROR(Status);\r | |
262 | gBS->RestoreTPL(OldTpl);\r | |
263 | \r | |
264 | // Setup the setters and getters\r | |
265 | gRT->GetTime = LibGetTime;\r | |
266 | gRT->SetTime = LibSetTime;\r | |
267 | gRT->GetWakeupTime = LibGetWakeupTime;\r | |
268 | gRT->SetWakeupTime = LibSetWakeupTime;\r | |
269 | \r | |
270 | // Install the protocol\r | |
271 | Handle = NULL;\r | |
272 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
273 | &Handle,\r | |
274 | &gEfiRealTimeClockArchProtocolGuid, NULL,\r | |
275 | NULL\r | |
276 | );\r | |
277 | \r | |
278 | return Status;\r | |
279 | }\r | |
280 | \r | |
281 | /**\r | |
282 | Fixup internal data so that EFI can be call in virtual mode.\r | |
283 | Call the passed in Child Notify event and convert any pointers in\r | |
284 | lib to virtual mode.\r | |
285 | \r | |
286 | @param[in] Event The Event that is being processed\r | |
287 | @param[in] Context Event Context\r | |
288 | **/\r | |
289 | VOID\r | |
290 | EFIAPI\r | |
291 | LibRtcVirtualNotifyEvent (\r | |
292 | IN EFI_EVENT Event,\r | |
293 | IN VOID *Context\r | |
294 | )\r | |
295 | {\r | |
296 | return;\r | |
297 | }\r |