]>
Commit | Line | Data |
---|---|---|
2ef2b01e A |
1 | /** @file\r |
2 | Serial I/O Port library functions with no library constructor/destructor\r | |
3 | \r | |
60274cca | 4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
7d49ced0 | 5 | Copyright (c) 2012, ARM Ltd. All rights reserved.\r |
3402aac7 | 6 | \r |
60274cca | 7 | This program and the accompanying materials\r |
2ef2b01e A |
8 | are licensed and made available under the terms and conditions of the BSD License\r |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include <Base.h>\r | |
18 | \r | |
19 | \r | |
20 | #include <Library/SerialPortLib.h>\r | |
21 | \r | |
7d49ced0 | 22 | /**\r |
2ef2b01e A |
23 | \r |
24 | Programmed hardware of Serial port.\r | |
25 | \r | |
26 | @return Always return EFI_UNSUPPORTED.\r | |
27 | \r | |
28 | **/\r | |
29 | RETURN_STATUS\r | |
30 | EFIAPI\r | |
31 | SerialPortInitialize (\r | |
32 | VOID\r | |
33 | )\r | |
34 | {\r | |
35 | return RETURN_UNSUPPORTED;\r | |
36 | }\r | |
37 | \r | |
38 | /**\r | |
39 | Write data to serial device.\r | |
40 | \r | |
11c20f4e | 41 | @param Buffer Point of data buffer which need to be written.\r |
2ef2b01e A |
42 | @param NumberOfBytes Number of output bytes which are cached in Buffer.\r |
43 | \r | |
44 | @retval 0 Write data failed.\r | |
11c20f4e | 45 | @retval !0 Actual number of bytes written to serial device.\r |
2ef2b01e A |
46 | \r |
47 | **/\r | |
48 | UINTN\r | |
49 | EFIAPI\r | |
50 | SerialPortWrite (\r | |
51 | IN UINT8 *Buffer,\r | |
52 | IN UINTN NumberOfBytes\r | |
7d49ced0 | 53 | )\r |
2ef2b01e A |
54 | {\r |
55 | return 0;\r | |
56 | }\r | |
57 | \r | |
58 | \r | |
59 | /**\r | |
11c20f4e | 60 | Read data from serial device and save the data in buffer.\r |
2ef2b01e | 61 | \r |
11c20f4e | 62 | @param Buffer Point of data buffer which need to be written.\r |
2ef2b01e A |
63 | @param NumberOfBytes Number of output bytes which are cached in Buffer.\r |
64 | \r | |
65 | @retval 0 Read data failed.\r | |
11c20f4e | 66 | @retval !0 Actual number of bytes read from serial device.\r |
2ef2b01e A |
67 | \r |
68 | **/\r | |
69 | UINTN\r | |
70 | EFIAPI\r | |
71 | SerialPortRead (\r | |
72 | OUT UINT8 *Buffer,\r | |
73 | IN UINTN NumberOfBytes\r | |
7d49ced0 | 74 | )\r |
2ef2b01e A |
75 | {\r |
76 | return 0;\r | |
77 | }\r | |
78 | \r | |
79 | \r | |
80 | \r | |
81 | /**\r | |
82 | Poll the serial device to see if there is any data waiting.\r | |
83 | \r | |
84 | If there is data waiting to be read from the serial port, then return\r | |
3402aac7 | 85 | TRUE. If there is no data waiting to be read from the serial port, then\r |
2ef2b01e A |
86 | return FALSE.\r |
87 | \r | |
88 | @retval TRUE Data is waiting to be read.\r | |
89 | @retval FALSE There is no data waiting to be read.\r | |
90 | \r | |
91 | **/\r | |
92 | BOOLEAN\r | |
93 | EFIAPI\r | |
94 | SerialPortPoll (\r | |
95 | VOID\r | |
96 | )\r | |
97 | {\r | |
98 | return 0;\r | |
99 | }\r | |
100 | \r |