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1 | /** @file\r | |
2 | Adjust Default System Time.\r | |
3 | \r | |
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
5 | \r | |
6 | This program and the accompanying materials are licensed and made available under\r | |
7 | the terms and conditions of the BSD License that accompanies this distribution. \r | |
8 | The full text of the license may be found at \r | |
9 | http://opensource.org/licenses/bsd-license.php. \r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
13 | \r | |
14 | --*/\r | |
15 | \r | |
16 | #include <PlatformDxe.h>\r | |
17 | \r | |
18 | //\r | |
19 | // Date and time initial values.\r | |
20 | // They are used if the RTC values are invalid during driver initialization\r | |
21 | //\r | |
22 | #define RTC_INIT_SECOND 0\r | |
23 | #define RTC_INIT_MINUTE 0\r | |
24 | #define RTC_INIT_HOUR 0\r | |
25 | \r | |
26 | CHAR16 mBiosReleaseDate[20]; \r | |
27 | \r | |
28 | /**\r | |
29 | Convert a single character to number.\r | |
30 | It assumes the input Char is in the scope of L'0' ~ L'9' and L'A' ~ L'F'\r | |
31 | \r | |
32 | @param Char The input char which need to change to a hex number.\r | |
33 | \r | |
34 | **/\r | |
35 | UINTN\r | |
36 | CharToUint (\r | |
37 | IN CHAR16 Char\r | |
38 | )\r | |
39 | {\r | |
40 | if ((Char >= L'0') && (Char <= L'9')) {\r | |
41 | return (UINTN) (Char - L'0');\r | |
42 | }\r | |
43 | \r | |
44 | if ((Char >= L'A') && (Char <= L'F')) {\r | |
45 | return (UINTN) (Char - L'A' + 0xA);\r | |
46 | }\r | |
47 | \r | |
48 | ASSERT (FALSE);\r | |
49 | return 0;\r | |
50 | }\r | |
51 | \r | |
52 | /**\r | |
53 | See if YEAR field of a variable of EFI_TIME type is correct.\r | |
54 | \r | |
55 | @param Time The time to be checked.\r | |
56 | \r | |
57 | @retval EFI_INVALID_PARAMETER Some fields of Time are not correct.\r | |
58 | @retval EFI_SUCCESS Time is a valid EFI_TIME variable.\r | |
59 | \r | |
60 | **/\r | |
61 | EFI_STATUS\r | |
62 | CheckRtcTimeFields (\r | |
63 | IN EFI_TIME *Time\r | |
64 | )\r | |
65 | {\r | |
66 | UINT16 YearBuilt;\r | |
67 | \r | |
68 | YearBuilt = (UINT16)(CharToUint(mBiosReleaseDate[8])*10 + CharToUint(mBiosReleaseDate[9]) + 2000);\r | |
69 | \r | |
70 | if ((Time->Year) < YearBuilt) {\r | |
71 | return EFI_INVALID_PARAMETER;\r | |
72 | }\r | |
73 | \r | |
74 | return EFI_SUCCESS;\r | |
75 | }\r | |
76 | \r | |
77 | /**\r | |
78 | ExitPmAuth Protocol notification event handler, which set initial system time to be\r | |
79 | the time when BIOS was built.\r | |
80 | \r | |
81 | @param[in] Event Event whose notification function is being invoked.\r | |
82 | @param[in] Context Pointer to the notification function's context.\r | |
83 | \r | |
84 | **/\r | |
85 | VOID\r | |
86 | EFIAPI\r | |
87 | AdjustDefaultRtcTimeCallback (\r | |
88 | IN EFI_EVENT Event,\r | |
89 | IN VOID *Context\r | |
90 | )\r | |
91 | {\r | |
92 | EFI_STATUS Status;\r | |
93 | EFI_TIME EfiTime;\r | |
94 | CHAR16 BiosVersion[60]; \r | |
95 | CHAR16 BiosReleaseTime[20]; \r | |
96 | //\r | |
97 | // Get BIOS built time from Bios-ID. \r | |
98 | //\r | |
99 | \r | |
100 | SetMem(BiosVersion, sizeof(BiosVersion), 0);\r | |
101 | SetMem(mBiosReleaseDate, sizeof(mBiosReleaseDate), 0);\r | |
102 | SetMem(BiosReleaseTime, sizeof(BiosReleaseTime), 0);\r | |
103 | \r | |
104 | Status = GetBiosVersionDateTime (BiosVersion, mBiosReleaseDate, BiosReleaseTime);\r | |
105 | ASSERT_EFI_ERROR(Status);\r | |
106 | if (EFI_ERROR (Status)) {\r | |
107 | return; \r | |
108 | }\r | |
109 | \r | |
110 | //\r | |
111 | // Get current RTC time.\r | |
112 | // \r | |
113 | Status = gRT->GetTime (&EfiTime, NULL);\r | |
114 | \r | |
115 | //\r | |
116 | // Validate RTC time fields\r | |
117 | //\r | |
118 | Status = CheckRtcTimeFields (&EfiTime);\r | |
119 | \r | |
120 | if (EFI_ERROR (Status)) {\r | |
121 | //\r | |
122 | // Date such as Dec 28th of 2015\r | |
123 | //\r | |
124 | // Month\r | |
125 | // BiosReleaseDate[0] = '1';\r | |
126 | // BiosReleaseDate[1] = '2';\r | |
127 | //\r | |
128 | // Day\r | |
129 | // BiosReleaseDate[3] = '2';\r | |
130 | // BiosReleaseDate[4] = '8';\r | |
131 | // \r | |
132 | //\r | |
133 | // Year\r | |
134 | //\r | |
135 | // BiosReleaseDate[6] = '2';\r | |
136 | // BiosReleaseDate[7] = '0';\r | |
137 | // BiosReleaseDate[8] = '1'\r | |
138 | // BiosReleaseDate[9] = '5';\r | |
139 | \r | |
140 | EfiTime.Second = RTC_INIT_SECOND;\r | |
141 | EfiTime.Minute = RTC_INIT_MINUTE;\r | |
142 | EfiTime.Hour = RTC_INIT_HOUR;\r | |
143 | EfiTime.Day = (UINT8)(CharToUint(mBiosReleaseDate[3])*10 + CharToUint(mBiosReleaseDate[4]));\r | |
144 | EfiTime.Month = (UINT8)(CharToUint(mBiosReleaseDate[0])*10 + CharToUint(mBiosReleaseDate[1]));\r | |
145 | EfiTime.Year = (UINT16)(CharToUint(mBiosReleaseDate[8])*10 + CharToUint(mBiosReleaseDate[9]) + 2000);\r | |
146 | EfiTime.Nanosecond = 0;\r | |
147 | EfiTime.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r | |
148 | EfiTime.Daylight = 1; \r | |
149 | \r | |
150 | DEBUG ((EFI_D_INFO, "Day:%d Month:%d Year:%d \n", (UINT32)EfiTime.Day, (UINT32)EfiTime.Month, (UINT32)EfiTime.Year));\r | |
151 | \r | |
152 | //\r | |
153 | // Reset time value according to new RTC configuration\r | |
154 | //\r | |
155 | Status = gRT->SetTime (&EfiTime);\r | |
156 | ASSERT_EFI_ERROR(Status);\r | |
157 | }\r | |
158 | \r | |
159 | return;\r | |
160 | }\r |