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1e57a462 | 1 | /** @file\r |
2 | Serial I/O Port library functions with no library constructor/destructor\r | |
3 | \r | |
4 | Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>\r | |
15e277d5 | 5 | Copyright (c) 2012 - 2013, ARM Ltd. All rights reserved.<BR>\r |
1e57a462 | 6 | \r |
7 | This program and the accompanying materials\r | |
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 | #include <Library/IoLib.h>\r | |
20 | #include <Library/PcdLib.h>\r | |
21 | #include <Library/SerialPortLib.h>\r | |
22 | #include <Library/SerialPortExtLib.h>\r | |
23 | \r | |
24 | #include <Drivers/PL011Uart.h>\r | |
25 | \r | |
26 | \r | |
27 | /**\r | |
28 | \r | |
29 | Programmed hardware of Serial port.\r | |
30 | \r | |
31 | @return Always return RETURN_UNSUPPORTED.\r | |
32 | \r | |
33 | **/\r | |
34 | RETURN_STATUS\r | |
35 | EFIAPI\r | |
36 | SerialPortInitialize (\r | |
37 | VOID\r | |
38 | )\r | |
39 | {\r | |
15e277d5 | 40 | UINT64 BaudRate;\r |
41 | UINT32 ReceiveFifoDepth;\r | |
42 | EFI_PARITY_TYPE Parity;\r | |
43 | UINT8 DataBits;\r | |
44 | EFI_STOP_BITS_TYPE StopBits;\r | |
45 | \r | |
46 | BaudRate = (UINTN)PcdGet64 (PcdUartDefaultBaudRate);\r | |
47 | ReceiveFifoDepth = 0; // Use the default value for Fifo depth\r | |
48 | Parity = (EFI_PARITY_TYPE)PcdGet8 (PcdUartDefaultParity);\r | |
49 | DataBits = PcdGet8 (PcdUartDefaultDataBits);\r | |
50 | StopBits = (EFI_STOP_BITS_TYPE) PcdGet8 (PcdUartDefaultStopBits);\r | |
51 | \r | |
1e57a462 | 52 | return PL011UartInitializePort (\r |
53 | (UINTN)PcdGet64 (PcdSerialRegisterBase),\r | |
15e277d5 | 54 | &BaudRate, &ReceiveFifoDepth, &Parity, &DataBits, &StopBits);\r |
1e57a462 | 55 | }\r |
56 | \r | |
57 | /**\r | |
58 | Write data to serial device.\r | |
59 | \r | |
60 | @param Buffer Point of data buffer which need to be written.\r | |
61 | @param NumberOfBytes Number of output bytes which are cached in Buffer.\r | |
62 | \r | |
63 | @retval 0 Write data failed.\r | |
64 | @retval !0 Actual number of bytes written to serial device.\r | |
65 | \r | |
66 | **/\r | |
67 | UINTN\r | |
68 | EFIAPI\r | |
69 | SerialPortWrite (\r | |
70 | IN UINT8 *Buffer,\r | |
71 | IN UINTN NumberOfBytes\r | |
72 | )\r | |
73 | {\r | |
74 | return PL011UartWrite ((UINTN)PcdGet64 (PcdSerialRegisterBase), Buffer, NumberOfBytes);\r | |
75 | }\r | |
76 | \r | |
77 | /**\r | |
78 | Read data from serial device and save the data in buffer.\r | |
79 | \r | |
80 | @param Buffer Point of data buffer which need to be written.\r | |
81 | @param NumberOfBytes Number of output bytes which are cached in Buffer.\r | |
82 | \r | |
83 | @retval 0 Read data failed.\r | |
84 | @retval !0 Actual number of bytes read from serial device.\r | |
85 | \r | |
86 | **/\r | |
87 | UINTN\r | |
88 | EFIAPI\r | |
89 | SerialPortRead (\r | |
90 | OUT UINT8 *Buffer,\r | |
91 | IN UINTN NumberOfBytes\r | |
92 | )\r | |
93 | {\r | |
94 | return PL011UartRead ((UINTN)PcdGet64 (PcdSerialRegisterBase), Buffer, NumberOfBytes);\r | |
95 | }\r | |
96 | \r | |
97 | /**\r | |
98 | Check to see if any data is available to be read from the debug device.\r | |
99 | \r | |
100 | @retval EFI_SUCCESS At least one byte of data is available to be read\r | |
101 | @retval EFI_NOT_READY No data is available to be read\r | |
102 | @retval EFI_DEVICE_ERROR The serial device is not functioning properly\r | |
103 | \r | |
104 | **/\r | |
105 | BOOLEAN\r | |
106 | EFIAPI\r | |
107 | SerialPortPoll (\r | |
108 | VOID\r | |
109 | )\r | |
110 | {\r | |
111 | return PL011UartPoll ((UINTN)PcdGet64 (PcdSerialRegisterBase));\r | |
112 | }\r | |
113 | \r |