1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/** @file
Implement EFI RealTimeClock runtime services via RTC Lib.
Currently this driver does not support runtime virtual calling.
Copyright (c) 2008-2009, Apple Inc. All rights reserved.
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which 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 <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/RealTimeClockLib.h>
/**
Returns the current time and date information, and the time-keeping capabilities
of the hardware platform.
@param Time A pointer to storage to receive a snapshot of the current time.
@param Capabilities An optional pointer to a buffer to receive the real time clock
device's capabilities.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER Time is NULL.
@retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.
**/
EFI_STATUS
EFIAPI
LibGetTime (
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities
)
{
//
// Fill in Time and Capabilities via data from you RTC
//
return EFI_DEVICE_ERROR;
}
/**
Sets the current local time and date information.
@param Time A pointer to the current time.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER A time field is out of range.
@retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.
**/
EFI_STATUS
EFIAPI
LibSetTime (
IN EFI_TIME *Time
)
{
//
// Use Time, to set the time in your RTC hardware
//
return EFI_DEVICE_ERROR;
}
/**
Returns the current wakeup alarm clock setting.
@param Enabled Indicates if the alarm is currently enabled or disabled.
@param Pending Indicates if the alarm signal is pending and requires acknowledgement.
@param Time The current alarm setting.
@retval EFI_SUCCESS The alarm settings were returned.
@retval EFI_INVALID_PARAMETER Any parameter is NULL.
@retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
**/
EFI_STATUS
EFIAPI
LibGetWakeupTime (
OUT BOOLEAN *Enabled,
OUT BOOLEAN *Pending,
OUT EFI_TIME *Time
)
{
// Not a required feature
return EFI_UNSUPPORTED;
}
/**
Sets the system wakeup alarm clock time.
@param Enabled Enable or disable the wakeup alarm.
@param Time If Enable is TRUE, the time to set the wakeup alarm for.
@retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If
Enable is FALSE, then the wakeup alarm was disabled.
@retval EFI_INVALID_PARAMETER A time field is out of range.
@retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.
@retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
**/
EFI_STATUS
EFIAPI
LibSetWakeupTime (
IN BOOLEAN Enabled,
OUT EFI_TIME *Time
)
{
// Not a required feature
return EFI_UNSUPPORTED;
}
/**
This is the declaration of an EFI image entry point. This can be the entry point to an application
written to this specification, an EFI boot service driver, or an EFI runtime driver.
@param ImageHandle Handle that identifies the loaded image.
@param SystemTable System Table for this image.
@retval EFI_SUCCESS The operation completed successfully.
**/
EFI_STATUS
EFIAPI
LibRtcInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
//
// Do some initialization if reqruied to turn on the RTC
//
return EFI_SUCCESS;
}
/**
Fixup internal data so that EFI can be call in virtual mode.
Call the passed in Child Notify event and convert any pointers in
lib to virtual mode.
@param[in] Event The Event that is being processed
@param[in] Context Event Context
**/
VOID
EFIAPI
LibRtcVirtualNotifyEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// Only needed if you are going to support the OS calling RTC functions in virtual mode.
// You will need to call EfiConvertPointer (). To convert any stored physical addresses
// to virtual address. After the OS transistions to calling in virtual mode, all future
// runtime calls will be made in virtual mode.
//
return;
}
|
