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1 | /** @file\r | |
2 | Serial I/O Port library functions with no library constructor/destructor\r | |
3 | \r | |
4 | Copyright (c) 2008-2009, Apple Inc. All rights reserved.\r | |
5 | \r | |
6 | All rights reserved. This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. 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 <Base.h>\r | |
17 | \r | |
18 | \r | |
19 | #include <Library/SerialPortLib.h>\r | |
20 | \r | |
21 | /*\r | |
22 | \r | |
23 | Programmed hardware of Serial port.\r | |
24 | \r | |
25 | @return Always return EFI_UNSUPPORTED.\r | |
26 | \r | |
27 | **/\r | |
28 | RETURN_STATUS\r | |
29 | EFIAPI\r | |
30 | SerialPortInitialize (\r | |
31 | VOID\r | |
32 | )\r | |
33 | {\r | |
34 | return RETURN_UNSUPPORTED;\r | |
35 | }\r | |
36 | \r | |
37 | /**\r | |
38 | Write data to serial device.\r | |
39 | \r | |
40 | @param Buffer Point of data buffer which need to be writed.\r | |
41 | @param NumberOfBytes Number of output bytes which are cached in Buffer.\r | |
42 | \r | |
43 | @retval 0 Write data failed.\r | |
44 | @retval !0 Actual number of bytes writed to serial device.\r | |
45 | \r | |
46 | **/\r | |
47 | UINTN\r | |
48 | EFIAPI\r | |
49 | SerialPortWrite (\r | |
50 | IN UINT8 *Buffer,\r | |
51 | IN UINTN NumberOfBytes\r | |
52 | )\r | |
53 | {\r | |
54 | return 0;\r | |
55 | }\r | |
56 | \r | |
57 | \r | |
58 | /**\r | |
59 | Read data from serial device and save the datas in buffer.\r | |
60 | \r | |
61 | @param Buffer Point of data buffer which need to be writed.\r | |
62 | @param NumberOfBytes Number of output bytes which are cached in Buffer.\r | |
63 | \r | |
64 | @retval 0 Read data failed.\r | |
65 | @retval !0 Aactual number of bytes read from serial device.\r | |
66 | \r | |
67 | **/\r | |
68 | UINTN\r | |
69 | EFIAPI\r | |
70 | SerialPortRead (\r | |
71 | OUT UINT8 *Buffer,\r | |
72 | IN UINTN NumberOfBytes\r | |
73 | )\r | |
74 | {\r | |
75 | return 0;\r | |
76 | }\r | |
77 | \r | |
78 | \r | |
79 | \r | |
80 | /**\r | |
81 | Poll the serial device to see if there is any data waiting.\r | |
82 | \r | |
83 | If there is data waiting to be read from the serial port, then return\r | |
84 | TRUE. If there is no data waiting to be read from the serial port, then \r | |
85 | return FALSE.\r | |
86 | \r | |
87 | @retval TRUE Data is waiting to be read.\r | |
88 | @retval FALSE There is no data waiting to be read.\r | |
89 | \r | |
90 | **/\r | |
91 | BOOLEAN\r | |
92 | EFIAPI\r | |
93 | SerialPortPoll (\r | |
94 | VOID\r | |
95 | )\r | |
96 | {\r | |
97 | return 0;\r | |
98 | }\r | |
99 | \r |