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949f388f | 1 | /** @file\r |
d18d8a1d | 2 | Serial Port Lib that thunks back to Emulator services to write to StdErr.\r |
3 | All read functions are stubed out.\r | |
949f388f | 4 | \r |
9fffd8e2 | 5 | Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r |
949f388f | 6 | Portions copyright (c) 2011, Apple Inc. All rights reserved.<BR>\r |
e3ba31da | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
949f388f | 8 | \r |
9 | **/\r | |
10 | \r | |
949f388f | 11 | #include <PiDxe.h>\r |
12 | #include <Library/SerialPortLib.h>\r | |
13 | #include <Library/EmuThunkLib.h>\r | |
14 | \r | |
949f388f | 15 | /**\r |
16 | Initialize the serial device hardware.\r | |
d18d8a1d | 17 | \r |
949f388f | 18 | If no initialization is required, then return RETURN_SUCCESS.\r |
19 | If the serial device was successfully initialized, then return RETURN_SUCCESS.\r | |
20 | If the serial device could not be initialized, then return RETURN_DEVICE_ERROR.\r | |
d18d8a1d | 21 | \r |
949f388f | 22 | @retval RETURN_SUCCESS The serial device was initialized.\r |
23 | @retval RETURN_DEVICE_ERROR The serial device could not be initialized.\r | |
24 | \r | |
25 | **/\r | |
26 | RETURN_STATUS\r | |
27 | EFIAPI\r | |
28 | SerialPortInitialize (\r | |
29 | VOID\r | |
30 | )\r | |
31 | {\r | |
7e284acb | 32 | return gEmuThunk->ConfigStdIn ();\r |
949f388f | 33 | }\r |
34 | \r | |
35 | /**\r | |
d18d8a1d | 36 | Write data from buffer to serial device.\r |
37 | \r | |
38 | Writes NumberOfBytes data bytes from Buffer to the serial device.\r | |
949f388f | 39 | The number of bytes actually written to the serial device is returned.\r |
40 | If the return value is less than NumberOfBytes, then the write operation failed.\r | |
d18d8a1d | 41 | If Buffer is NULL, then ASSERT().\r |
949f388f | 42 | If NumberOfBytes is zero, then return 0.\r |
43 | \r | |
44 | @param Buffer The pointer to the data buffer to be written.\r | |
45 | @param NumberOfBytes The number of bytes to written to the serial device.\r | |
46 | \r | |
47 | @retval 0 NumberOfBytes is 0.\r | |
d18d8a1d | 48 | @retval >0 The number of bytes written to the serial device.\r |
949f388f | 49 | If this value is less than NumberOfBytes, then the read operation failed.\r |
50 | \r | |
51 | **/\r | |
52 | UINTN\r | |
53 | EFIAPI\r | |
54 | SerialPortWrite (\r | |
a550d468 MK |
55 | IN UINT8 *Buffer,\r |
56 | IN UINTN NumberOfBytes\r | |
949f388f | 57 | )\r |
58 | {\r | |
7e284acb | 59 | return gEmuThunk->WriteStdOut (Buffer, NumberOfBytes);\r |
949f388f | 60 | }\r |
61 | \r | |
949f388f | 62 | /**\r |
63 | Read data from serial device and save the datas in buffer.\r | |
d18d8a1d | 64 | \r |
949f388f | 65 | Reads NumberOfBytes data bytes from a serial device into the buffer\r |
d18d8a1d | 66 | specified by Buffer. The number of bytes actually read is returned.\r |
949f388f | 67 | If the return value is less than NumberOfBytes, then the rest operation failed.\r |
d18d8a1d | 68 | If Buffer is NULL, then ASSERT().\r |
949f388f | 69 | If NumberOfBytes is zero, then return 0.\r |
70 | \r | |
71 | @param Buffer The pointer to the data buffer to store the data read from the serial device.\r | |
72 | @param NumberOfBytes The number of bytes which will be read.\r | |
73 | \r | |
74 | @retval 0 Read data failed; No data is to be read.\r | |
75 | @retval >0 The actual number of bytes read from serial device.\r | |
76 | \r | |
77 | **/\r | |
78 | UINTN\r | |
79 | EFIAPI\r | |
80 | SerialPortRead (\r | |
a550d468 MK |
81 | OUT UINT8 *Buffer,\r |
82 | IN UINTN NumberOfBytes\r | |
949f388f | 83 | )\r |
84 | {\r | |
7e284acb | 85 | return gEmuThunk->ReadStdIn (Buffer, NumberOfBytes);\r |
949f388f | 86 | }\r |
87 | \r | |
88 | /**\r | |
89 | Polls a serial device to see if there is any data waiting to be read.\r | |
90 | \r | |
91 | Polls a serial device to see if there is any data waiting to be read.\r | |
92 | If there is data waiting to be read from the serial device, then TRUE is returned.\r | |
93 | If there is no data waiting to be read from the serial device, then FALSE is returned.\r | |
94 | \r | |
95 | @retval TRUE Data is waiting to be read from the serial device.\r | |
96 | @retval FALSE There is no data waiting to be read from the serial device.\r | |
97 | \r | |
98 | **/\r | |
99 | BOOLEAN\r | |
100 | EFIAPI\r | |
101 | SerialPortPoll (\r | |
102 | VOID\r | |
103 | )\r | |
104 | {\r | |
7e284acb | 105 | return gEmuThunk->PollStdIn ();\r |
949f388f | 106 | }\r |
107 | \r | |
9fffd8e2 SZ |
108 | /**\r |
109 | Sets the control bits on a serial device.\r | |
110 | \r | |
111 | @param Control Sets the bits of Control that are settable.\r | |
112 | \r | |
113 | @retval RETURN_SUCCESS The new control bits were set on the serial device.\r | |
114 | @retval RETURN_UNSUPPORTED The serial device does not support this operation.\r | |
115 | @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.\r | |
116 | \r | |
117 | **/\r | |
118 | RETURN_STATUS\r | |
119 | EFIAPI\r | |
120 | SerialPortSetControl (\r | |
a550d468 | 121 | IN UINT32 Control\r |
9fffd8e2 SZ |
122 | )\r |
123 | {\r | |
124 | return RETURN_UNSUPPORTED;\r | |
125 | }\r | |
126 | \r | |
127 | /**\r | |
128 | Retrieve the status of the control bits on a serial device.\r | |
129 | \r | |
130 | @param Control A pointer to return the current control signals from the serial device.\r | |
131 | \r | |
132 | @retval RETURN_SUCCESS The control bits were read from the serial device.\r | |
133 | @retval RETURN_UNSUPPORTED The serial device does not support this operation.\r | |
134 | @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.\r | |
135 | \r | |
136 | **/\r | |
137 | RETURN_STATUS\r | |
138 | EFIAPI\r | |
139 | SerialPortGetControl (\r | |
a550d468 | 140 | OUT UINT32 *Control\r |
9fffd8e2 SZ |
141 | )\r |
142 | {\r | |
143 | *Control = 0;\r | |
144 | if (!SerialPortPoll ()) {\r | |
145 | *Control = EFI_SERIAL_INPUT_BUFFER_EMPTY;\r | |
146 | }\r | |
a550d468 | 147 | \r |
9fffd8e2 SZ |
148 | return RETURN_SUCCESS;\r |
149 | }\r | |
150 | \r | |
151 | /**\r | |
152 | Sets the baud rate, receive FIFO depth, transmit/receice time out, parity,\r | |
153 | data bits, and stop bits on a serial device.\r | |
154 | \r | |
155 | @param BaudRate The requested baud rate. A BaudRate value of 0 will use the\r | |
156 | device's default interface speed.\r | |
157 | On output, the value actually set.\r | |
158 | @param ReveiveFifoDepth The requested depth of the FIFO on the receive side of the\r | |
159 | serial interface. A ReceiveFifoDepth value of 0 will use\r | |
160 | the device's default FIFO depth.\r | |
161 | On output, the value actually set.\r | |
162 | @param Timeout The requested time out for a single character in microseconds.\r | |
163 | This timeout applies to both the transmit and receive side of the\r | |
164 | interface. A Timeout value of 0 will use the device's default time\r | |
165 | out value.\r | |
166 | On output, the value actually set.\r | |
167 | @param Parity The type of parity to use on this serial device. A Parity value of\r | |
168 | DefaultParity will use the device's default parity value.\r | |
169 | On output, the value actually set.\r | |
170 | @param DataBits The number of data bits to use on the serial device. A DataBits\r | |
171 | vaule of 0 will use the device's default data bit setting.\r | |
172 | On output, the value actually set.\r | |
173 | @param StopBits The number of stop bits to use on this serial device. A StopBits\r | |
174 | value of DefaultStopBits will use the device's default number of\r | |
175 | stop bits.\r | |
176 | On output, the value actually set.\r | |
177 | \r | |
178 | @retval RETURN_SUCCESS The new attributes were set on the serial device.\r | |
179 | @retval RETURN_UNSUPPORTED The serial device does not support this operation.\r | |
180 | @retval RETURN_INVALID_PARAMETER One or more of the attributes has an unsupported value.\r | |
181 | @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.\r | |
182 | \r | |
183 | **/\r | |
184 | RETURN_STATUS\r | |
185 | EFIAPI\r | |
186 | SerialPortSetAttributes (\r | |
a550d468 MK |
187 | IN OUT UINT64 *BaudRate,\r |
188 | IN OUT UINT32 *ReceiveFifoDepth,\r | |
189 | IN OUT UINT32 *Timeout,\r | |
190 | IN OUT EFI_PARITY_TYPE *Parity,\r | |
191 | IN OUT UINT8 *DataBits,\r | |
192 | IN OUT EFI_STOP_BITS_TYPE *StopBits\r | |
9fffd8e2 SZ |
193 | )\r |
194 | {\r | |
195 | return RETURN_UNSUPPORTED;\r | |
196 | }\r |