1 | /* |
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2 | * This file contains the generic console driver shell used |
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3 | * by all console drivers using libchip. |
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4 | * |
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5 | * This driver uses the termios pseudo driver. |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1997. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.org/license/LICENSE. |
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13 | */ |
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14 | |
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15 | #include <bsp.h> |
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16 | #include <rtems/libio.h> |
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17 | #include <termios.h> |
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18 | #include "sci.h" |
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19 | |
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20 | /*PAGE |
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21 | * |
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22 | * console_open |
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23 | * |
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24 | * open a port as a termios console. |
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25 | */ |
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26 | |
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27 | rtems_device_driver console_open( |
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28 | rtems_device_major_number major, |
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29 | rtems_device_minor_number minor, |
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30 | void * arg |
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31 | ) |
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32 | { |
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33 | rtems_status_code status; |
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34 | |
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35 | /* the console is opened three times at startup */ |
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36 | /* for standard input, output, and error */ |
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37 | |
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38 | /* Get correct callback structure for the device */ |
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39 | |
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40 | /* argument of FALSE gives us interrupt driven serial io */ |
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41 | /* argument of TRUE gives us polling based serial io */ |
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42 | |
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43 | /* SCI internal uart */ |
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44 | |
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45 | status = rtems_termios_open( major, minor, arg, SciGetTermiosHandlers( FALSE ) ); |
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46 | |
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47 | return status; |
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48 | } |
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49 | |
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50 | /*PAGE |
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51 | * |
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52 | * console_close |
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53 | * |
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54 | * This routine closes a port that has been opened as console. |
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55 | */ |
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56 | |
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57 | rtems_device_driver console_close( |
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58 | rtems_device_major_number major, |
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59 | rtems_device_minor_number minor, |
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60 | void * arg |
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61 | ) |
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62 | { |
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63 | return rtems_termios_close (arg); |
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64 | } |
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65 | |
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66 | /*PAGE |
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67 | * |
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68 | * console_read |
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69 | * |
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70 | * This routine uses the termios driver to read a character. |
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71 | */ |
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72 | |
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73 | rtems_device_driver console_read( |
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74 | rtems_device_major_number major, |
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75 | rtems_device_minor_number minor, |
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76 | void * arg |
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77 | ) |
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78 | { |
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79 | return rtems_termios_read (arg); |
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80 | } |
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81 | |
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82 | /*PAGE |
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83 | * |
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84 | * console_write |
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85 | * |
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86 | * this routine uses the termios driver to write a character. |
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87 | */ |
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88 | |
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89 | rtems_device_driver console_write( |
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90 | rtems_device_major_number major, |
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91 | rtems_device_minor_number minor, |
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92 | void * arg |
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93 | ) |
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94 | { |
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95 | return rtems_termios_write (arg); |
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96 | } |
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97 | |
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98 | /*PAGE |
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99 | * |
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100 | * console_control |
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101 | * |
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102 | * this routine uses the termios driver to process io |
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103 | */ |
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104 | |
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105 | rtems_device_driver console_control( |
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106 | rtems_device_major_number major, |
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107 | rtems_device_minor_number minor, |
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108 | void * arg |
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109 | ) |
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110 | { |
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111 | return rtems_termios_ioctl (arg); |
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112 | } |
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113 | |
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114 | /*PAGE |
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115 | * |
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116 | * console_initialize |
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117 | * |
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118 | * Routine called to initialize the console device driver. |
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119 | */ |
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120 | |
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121 | rtems_device_driver console_initialize( |
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122 | rtems_device_major_number major, |
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123 | rtems_device_minor_number minor_arg, |
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124 | void *arg |
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125 | ) |
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126 | { |
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127 | rtems_status_code status; |
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128 | |
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129 | /* |
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130 | * initialize the termio interface. |
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131 | */ |
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132 | rtems_termios_initialize(); |
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133 | |
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134 | /* |
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135 | * register the SCI device name for termios |
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136 | * do this over in the sci driver init routine? |
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137 | */ |
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138 | |
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139 | status = rtems_io_register_name( "/dev/sci", major, 0 ); |
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140 | |
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141 | if (status != RTEMS_SUCCESSFUL) |
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142 | { |
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143 | rtems_fatal_error_occurred(status); |
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144 | } |
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145 | |
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146 | /* |
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147 | * Link the uart device to the console device |
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148 | */ |
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149 | |
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150 | #if 1 |
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151 | status = rtems_io_register_name( "/dev/console", major, 0 ); |
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152 | |
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153 | if (status != RTEMS_SUCCESSFUL) |
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154 | { |
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155 | rtems_fatal_error_occurred(status); |
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156 | } |
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157 | #else |
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158 | if ( link( "/dev/sci", "/dev/console") < 0 ) |
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159 | { |
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160 | rtems_fatal_error_occurred( RTEMS_IO_ERROR ); |
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161 | } |
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162 | #endif |
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163 | |
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164 | /* |
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165 | * Console Initialize Succesful |
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166 | */ |
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167 | |
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168 | return RTEMS_SUCCESSFUL; |
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169 | } |
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