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ef42ef7e AB |
1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>\r | |
4 | Copyright (c) 2014 - 2018, Linaro Ltd. All rights reserved.<BR>\r | |
5 | \r | |
9792fb0e | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
ef42ef7e AB |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include <Library/ArmGenericTimerCounterLib.h>\r | |
11 | #include <Library/ArmLib.h>\r | |
12 | \r | |
13 | VOID\r | |
14 | EFIAPI\r | |
15 | ArmGenericTimerEnableTimer (\r | |
16 | VOID\r | |
17 | )\r | |
18 | {\r | |
2b16a4fb | 19 | UINTN TimerCtrlReg;\r |
ef42ef7e | 20 | \r |
2b16a4fb | 21 | TimerCtrlReg = ArmReadCntvCtl ();\r |
ef42ef7e AB |
22 | TimerCtrlReg |= ARM_ARCH_TIMER_ENABLE;\r |
23 | ArmWriteCntvCtl (TimerCtrlReg);\r | |
24 | }\r | |
25 | \r | |
26 | VOID\r | |
27 | EFIAPI\r | |
28 | ArmGenericTimerReenableTimer (\r | |
29 | VOID\r | |
30 | )\r | |
31 | {\r | |
2b16a4fb | 32 | UINTN TimerCtrlReg;\r |
ef42ef7e | 33 | \r |
2b16a4fb | 34 | TimerCtrlReg = ArmReadCntvCtl ();\r |
ef42ef7e AB |
35 | TimerCtrlReg |= ARM_ARCH_TIMER_ENABLE;\r |
36 | \r | |
37 | //\r | |
38 | // When running under Xen, we need to unmask the interrupt on the timer side\r | |
39 | // as Xen will mask it when servicing the interrupt at the hypervisor level\r | |
40 | // and delivering the virtual timer interrupt to the guest. Otherwise, the\r | |
41 | // interrupt will fire again, trapping into the hypervisor again, etc. etc.\r | |
42 | //\r | |
43 | TimerCtrlReg &= ~ARM_ARCH_TIMER_IMASK;\r | |
44 | ArmWriteCntvCtl (TimerCtrlReg);\r | |
45 | }\r | |
46 | \r | |
47 | VOID\r | |
48 | EFIAPI\r | |
49 | ArmGenericTimerDisableTimer (\r | |
50 | VOID\r | |
51 | )\r | |
52 | {\r | |
2b16a4fb | 53 | UINTN TimerCtrlReg;\r |
ef42ef7e | 54 | \r |
2b16a4fb | 55 | TimerCtrlReg = ArmReadCntvCtl ();\r |
ef42ef7e AB |
56 | TimerCtrlReg &= ~ARM_ARCH_TIMER_ENABLE;\r |
57 | ArmWriteCntvCtl (TimerCtrlReg);\r | |
58 | }\r | |
59 | \r | |
60 | VOID\r | |
61 | EFIAPI\r | |
62 | ArmGenericTimerSetTimerFreq (\r | |
63 | IN UINTN FreqInHz\r | |
64 | )\r | |
65 | {\r | |
66 | ArmWriteCntFrq (FreqInHz);\r | |
67 | }\r | |
68 | \r | |
69 | UINTN\r | |
70 | EFIAPI\r | |
71 | ArmGenericTimerGetTimerFreq (\r | |
72 | VOID\r | |
73 | )\r | |
74 | {\r | |
75 | return ArmReadCntFrq ();\r | |
76 | }\r | |
77 | \r | |
78 | UINTN\r | |
79 | EFIAPI\r | |
80 | ArmGenericTimerGetTimerVal (\r | |
81 | VOID\r | |
82 | )\r | |
83 | {\r | |
84 | return ArmReadCntvTval ();\r | |
85 | }\r | |
86 | \r | |
ef42ef7e AB |
87 | VOID\r |
88 | EFIAPI\r | |
89 | ArmGenericTimerSetTimerVal (\r | |
2b16a4fb | 90 | IN UINTN Value\r |
ef42ef7e AB |
91 | )\r |
92 | {\r | |
93 | ArmWriteCntvTval (Value);\r | |
94 | }\r | |
95 | \r | |
96 | UINT64\r | |
97 | EFIAPI\r | |
98 | ArmGenericTimerGetSystemCount (\r | |
99 | VOID\r | |
100 | )\r | |
101 | {\r | |
102 | return ArmReadCntvCt ();\r | |
103 | }\r | |
104 | \r | |
105 | UINTN\r | |
106 | EFIAPI\r | |
107 | ArmGenericTimerGetTimerCtrlReg (\r | |
108 | VOID\r | |
109 | )\r | |
110 | {\r | |
111 | return ArmReadCntvCtl ();\r | |
112 | }\r | |
113 | \r | |
114 | VOID\r | |
115 | EFIAPI\r | |
116 | ArmGenericTimerSetTimerCtrlReg (\r | |
2b16a4fb | 117 | UINTN Value\r |
ef42ef7e AB |
118 | )\r |
119 | {\r | |
120 | ArmWriteCntvCtl (Value);\r | |
121 | }\r | |
122 | \r | |
123 | UINT64\r | |
124 | EFIAPI\r | |
125 | ArmGenericTimerGetCompareVal (\r | |
126 | VOID\r | |
127 | )\r | |
128 | {\r | |
129 | return ArmReadCntvCval ();\r | |
130 | }\r | |
131 | \r | |
132 | VOID\r | |
133 | EFIAPI\r | |
134 | ArmGenericTimerSetCompareVal (\r | |
2b16a4fb | 135 | IN UINT64 Value\r |
ef42ef7e AB |
136 | )\r |
137 | {\r | |
138 | ArmWriteCntvCval (Value);\r | |
139 | }\r |