1 | /*-------------------------------------------------------------------------+ |
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2 | | console.c v1.1 - PC386 BSP - 1997/08/07 |
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3 | +--------------------------------------------------------------------------+ |
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4 | | This file contains the PC386 console I/O package. |
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5 | +--------------------------------------------------------------------------+ |
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6 | | (C) Copyright 1997 - |
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7 | | - NavIST Group - Real-Time Distributed Systems and Industrial Automation |
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8 | | |
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9 | | http://pandora.ist.utl.pt |
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10 | | |
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11 | | Instituto Superior Tecnico * Lisboa * PORTUGAL |
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12 | +--------------------------------------------------------------------------+ |
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13 | | Disclaimer: |
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14 | | |
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15 | | This file is provided "AS IS" without warranty of any kind, either |
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16 | | expressed or implied. |
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17 | +--------------------------------------------------------------------------+ |
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18 | | This code is based on: |
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19 | | console.c,v 1.4 1995/12/19 20:07:23 joel Exp - go32 BSP |
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20 | | With the following copyright notice: |
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21 | | ************************************************************************** |
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22 | | * COPYRIGHT (c) 1989-1998. |
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23 | | * On-Line Applications Research Corporation (OAR). |
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24 | | * Copyright assigned to U.S. Government, 1994. |
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25 | | * |
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26 | | * The license and distribution terms for this file may be |
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27 | | * found in found in the file LICENSE in this distribution or at |
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28 | | * http://www.OARcorp.com/rtems/license.html. |
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29 | | ************************************************************************** |
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30 | | |
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31 | | $Id$ |
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32 | +--------------------------------------------------------------------------*/ |
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33 | |
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34 | #include <stdio.h> |
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35 | #include <stdlib.h> |
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36 | #include <assert.h> |
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37 | |
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38 | #include <bsp.h> |
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39 | #include <irq.h> |
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40 | #include <rtems/libio.h> |
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41 | #include <termios.h> |
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42 | #include <pc386uart.h> |
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43 | |
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44 | int PC386ConsolePort = PC386_CONSOLE_PORT_CONSOLE; |
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45 | |
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46 | static int conSetAttr(int minor, const struct termios *); |
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47 | |
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48 | /*-------------------------------------------------------------------------+ |
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49 | | External Prototypes |
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50 | +--------------------------------------------------------------------------*/ |
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51 | extern void _IBMPC_keyboard_isr(void); |
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52 | extern void _IBMPC_keyboard_isr_on(const rtems_irq_connect_data*); |
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53 | extern void _IBMPC_keyboard_isr_off(const rtems_irq_connect_data*); |
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54 | extern int _IBMPC_keyboard_isr_is_on(const rtems_irq_connect_data*); |
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55 | |
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56 | static rtems_irq_connect_data console_isr_data = {PC_386_KEYBOARD, |
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57 | _IBMPC_keyboard_isr, |
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58 | _IBMPC_keyboard_isr_on, |
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59 | _IBMPC_keyboard_isr_off, |
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60 | _IBMPC_keyboard_isr_is_on}; |
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61 | |
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62 | |
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63 | extern rtems_boolean _IBMPC_scankey(char *); /* defined in 'inch.c' */ |
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64 | |
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65 | void console_reserve_resources(rtems_configuration_table *conf) |
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66 | { |
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67 | if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE) |
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68 | { |
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69 | rtems_termios_reserve_resources(conf, 1); |
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70 | } |
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71 | return; |
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72 | } |
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73 | |
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74 | void __assert(const char *file, int line, const char *msg) |
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75 | { |
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76 | static char buf[20]; |
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77 | static char exit_msg[] = "EXECUTIVE SHUTDOWN! Any key to reboot..."; |
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78 | static char assert_msg[] = "assert failed: "; |
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79 | unsigned char ch; |
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80 | const unsigned char *cp; |
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81 | |
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82 | |
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83 | /* |
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84 | * Note we cannot call exit or printf from here, |
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85 | * assert can fail inside ISR too |
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86 | */ |
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87 | if(PC386ConsolePort == PC386_CONSOLE_PORT_CONSOLE) |
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88 | { |
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89 | printk("\nassert failed: %s: ", file); |
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90 | printk("%d: ", line); |
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91 | printk("%s\n\n", msg); |
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92 | printk(exit_msg); |
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93 | while(!_IBMPC_scankey(&ch)); |
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94 | printk("\n\n"); |
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95 | } |
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96 | else |
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97 | { |
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98 | PC386_uart_intr_ctrl(PC386ConsolePort, PC386_UART_INTR_CTRL_DISABLE); |
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99 | |
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100 | PC386_uart_polled_write(PC386ConsolePort, '\r'); |
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101 | PC386_uart_polled_write(PC386ConsolePort, '\n'); |
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102 | |
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103 | for(cp=assert_msg; *cp!=0; cp++) |
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104 | { |
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105 | PC386_uart_polled_write(PC386ConsolePort, *cp); |
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106 | } |
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107 | |
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108 | for(cp=file; *cp!=0; cp++) |
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109 | { |
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110 | PC386_uart_polled_write(PC386ConsolePort, *cp); |
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111 | } |
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112 | |
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113 | PC386_uart_polled_write(PC386ConsolePort, ':'); |
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114 | PC386_uart_polled_write(PC386ConsolePort, ' '); |
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115 | |
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116 | sprintf(buf, "%d: ", line); |
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117 | |
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118 | for(cp=buf; *cp!=0; cp++) |
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119 | { |
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120 | PC386_uart_polled_write(PC386ConsolePort, *cp); |
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121 | } |
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122 | |
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123 | for(cp=msg; *cp!=0; cp++) |
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124 | { |
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125 | PC386_uart_polled_write(PC386ConsolePort, *cp); |
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126 | } |
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127 | |
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128 | PC386_uart_polled_write(PC386ConsolePort, '\r'); |
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129 | PC386_uart_polled_write(PC386ConsolePort, '\n'); |
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130 | PC386_uart_polled_write(PC386ConsolePort, '\r'); |
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131 | PC386_uart_polled_write(PC386ConsolePort, '\n'); |
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132 | |
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133 | for(cp=exit_msg; *cp != 0; cp++) |
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134 | { |
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135 | PC386_uart_polled_write(PC386ConsolePort, *cp); |
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136 | } |
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137 | |
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138 | PC386_uart_polled_read(PC386ConsolePort); |
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139 | |
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140 | PC386_uart_polled_write(PC386ConsolePort, '\r'); |
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141 | PC386_uart_polled_write(PC386ConsolePort, '\n'); |
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142 | PC386_uart_polled_write(PC386ConsolePort, '\r'); |
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143 | PC386_uart_polled_write(PC386ConsolePort, '\n'); |
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144 | |
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145 | } |
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146 | |
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147 | rtemsReboot(); |
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148 | } |
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149 | |
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150 | |
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151 | /*-------------------------------------------------------------------------+ |
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152 | | Console device driver INITIALIZE entry point. |
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153 | +--------------------------------------------------------------------------+ |
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154 | | Initilizes the I/O console (keyboard + VGA display) driver. |
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155 | +--------------------------------------------------------------------------*/ |
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156 | rtems_device_driver |
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157 | console_initialize(rtems_device_major_number major, |
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158 | rtems_device_minor_number minor, |
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159 | void *arg) |
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160 | { |
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161 | rtems_status_code status; |
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162 | |
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163 | /* Initialize video */ |
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164 | _IBMPC_initVideo(); |
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165 | |
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166 | if(PC386ConsolePort == PC386_CONSOLE_PORT_CONSOLE) |
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167 | { |
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168 | |
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169 | /* Install keyboard interrupt handler */ |
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170 | status = pc386_install_rtems_irq_handler(&console_isr_data); |
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171 | |
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172 | if (!status) |
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173 | { |
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174 | printk("Error installing keyboard interrupt handler!\n"); |
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175 | rtems_fatal_error_occurred(status); |
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176 | } |
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177 | |
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178 | status = rtems_io_register_name("/dev/console", major, 0); |
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179 | if (status != RTEMS_SUCCESSFUL) |
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180 | { |
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181 | printk("Error registering console device!\n"); |
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182 | rtems_fatal_error_occurred(status); |
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183 | } |
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184 | printk("Initialized console on port CONSOLE\n\n"); |
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185 | } |
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186 | else |
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187 | { |
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188 | /* |
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189 | * Set up TERMIOS |
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190 | */ |
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191 | rtems_termios_initialize (); |
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192 | |
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193 | /* |
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194 | * Do device-specific initialization |
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195 | */ |
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196 | |
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197 | /* 9600-8-N-1 */ |
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198 | PC386_uart_init(PC386ConsolePort, 9600, 0); |
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199 | |
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200 | |
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201 | /* Set interrupt handler */ |
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202 | if(PC386ConsolePort == PC386_UART_COM1) |
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203 | { |
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204 | console_isr_data.name = PC386_UART_COM1_IRQ; |
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205 | console_isr_data.hdl = PC386_uart_termios_isr_com1; |
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206 | |
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207 | } |
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208 | else |
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209 | { |
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210 | assert(PC386ConsolePort == PC386_UART_COM2); |
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211 | console_isr_data.name = PC386_UART_COM2_IRQ; |
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212 | console_isr_data.hdl = PC386_uart_termios_isr_com2; |
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213 | } |
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214 | |
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215 | status =pc386_install_rtems_irq_handler(&console_isr_data); |
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216 | /* |
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217 | * Register the device |
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218 | */ |
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219 | status = rtems_io_register_name ("/dev/console", major, 0); |
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220 | if (status != RTEMS_SUCCESSFUL) |
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221 | { |
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222 | printk("Error registering console device!\n"); |
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223 | rtems_fatal_error_occurred (status); |
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224 | } |
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225 | |
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226 | if(PC386ConsolePort == PC386_UART_COM1) |
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227 | { |
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228 | printk("Initialized console on port COM1 9600-8-N-1\n\n"); |
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229 | } |
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230 | else |
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231 | { |
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232 | printk("Initialized console on port COM2 9600-8-N-1\n\n"); |
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233 | } |
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234 | } |
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235 | |
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236 | return RTEMS_SUCCESSFUL; |
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237 | } /* console_initialize */ |
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238 | |
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239 | |
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240 | /*-------------------------------------------------------------------------+ |
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241 | | Console device driver OPEN entry point |
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242 | +--------------------------------------------------------------------------*/ |
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243 | rtems_device_driver |
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244 | console_open(rtems_device_major_number major, |
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245 | rtems_device_minor_number minor, |
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246 | void *arg) |
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247 | { |
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248 | rtems_status_code status; |
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249 | static rtems_termios_callbacks cb = |
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250 | { |
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251 | NULL, /* firstOpen */ |
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252 | NULL, /* lastClose */ |
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253 | NULL, /* pollRead */ |
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254 | PC386_uart_termios_write_com1, /* write */ |
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255 | conSetAttr, /* setAttributes */ |
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256 | NULL, /* stopRemoteTx */ |
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257 | NULL, /* startRemoteTx */ |
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258 | 1 /* outputUsesInterrupts */ |
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259 | }; |
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260 | |
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261 | if(PC386ConsolePort == PC386_CONSOLE_PORT_CONSOLE) |
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262 | { |
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263 | return RTEMS_SUCCESSFUL; |
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264 | } |
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265 | |
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266 | if(PC386ConsolePort == PC386_UART_COM2) |
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267 | { |
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268 | cb.write = PC386_uart_termios_write_com2; |
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269 | } |
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270 | |
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271 | status = rtems_termios_open (major, minor, arg, &cb); |
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272 | |
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273 | if(status != RTEMS_SUCCESSFUL) |
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274 | { |
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275 | printk("Error openning console device\n"); |
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276 | return status; |
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277 | } |
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278 | |
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279 | /* |
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280 | * Pass data area info down to driver |
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281 | */ |
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282 | PC386_uart_termios_set(PC386ConsolePort, |
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283 | ((rtems_libio_open_close_args_t *)arg)->iop->data1); |
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284 | |
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285 | /* Enable interrupts on channel */ |
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286 | PC386_uart_intr_ctrl(PC386ConsolePort, PC386_UART_INTR_CTRL_TERMIOS); |
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287 | |
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288 | return RTEMS_SUCCESSFUL; |
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289 | } |
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290 | |
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291 | /*-------------------------------------------------------------------------+ |
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292 | | Console device driver CLOSE entry point |
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293 | +--------------------------------------------------------------------------*/ |
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294 | rtems_device_driver |
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295 | console_close(rtems_device_major_number major, |
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296 | rtems_device_minor_number minor, |
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297 | void *arg) |
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298 | { |
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299 | rtems_device_driver res = RTEMS_SUCCESSFUL; |
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300 | |
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301 | if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE) |
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302 | { |
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303 | res = rtems_termios_close (arg); |
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304 | } |
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305 | pc386_remove_rtems_irq_handler (&console_isr_data); |
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306 | |
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307 | return res; |
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308 | } /* console_close */ |
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309 | |
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310 | |
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311 | /*-------------------------------------------------------------------------+ |
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312 | | Console device driver READ entry point. |
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313 | +--------------------------------------------------------------------------+ |
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314 | | Read characters from the I/O console. We only have stdin. |
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315 | +--------------------------------------------------------------------------*/ |
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316 | rtems_device_driver |
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317 | console_read(rtems_device_major_number major, |
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318 | rtems_device_minor_number minor, |
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319 | void *arg) |
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320 | { |
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321 | rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg; |
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322 | char *buffer = rw_args->buffer; |
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323 | int count, maximum = rw_args->count; |
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324 | |
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325 | if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE) |
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326 | { |
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327 | return rtems_termios_read (arg); |
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328 | } |
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329 | |
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330 | for (count = 0; count < maximum; count++) |
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331 | { |
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332 | /* Get character */ |
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333 | buffer[count] = _IBMPC_inch_sleep(); |
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334 | |
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335 | /* Echo character to screen */ |
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336 | _IBMPC_outch(buffer[count]); |
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337 | if (buffer[count] == '\r') |
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338 | { |
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339 | _IBMPC_outch('\n'); /* CR = CR + LF */ |
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340 | } |
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341 | |
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342 | if (buffer[count] == '\n' || buffer[count] == '\r') |
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343 | { |
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344 | /* What if this goes past the end of the buffer? We're hosed. [bhc] */ |
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345 | buffer[count++] = '\n'; |
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346 | buffer[count] = '\0'; |
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347 | break; |
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348 | } |
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349 | } |
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350 | |
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351 | rw_args->bytes_moved = count; |
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352 | return ((count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED); |
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353 | } /* console_read */ |
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354 | |
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355 | |
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356 | /*-------------------------------------------------------------------------+ |
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357 | | Console device driver WRITE entry point. |
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358 | +--------------------------------------------------------------------------+ |
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359 | | Write characters to the I/O console. Stderr and stdout are the same. |
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360 | +--------------------------------------------------------------------------*/ |
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361 | rtems_device_driver |
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362 | console_write(rtems_device_major_number major, |
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363 | rtems_device_minor_number minor, |
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364 | void * arg) |
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365 | { |
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366 | rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg; |
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367 | char *buffer = rw_args->buffer; |
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368 | int count, maximum = rw_args->count; |
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369 | |
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370 | if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE) |
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371 | { |
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372 | return rtems_termios_write (arg); |
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373 | } |
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374 | |
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375 | for (count = 0; count < maximum; count++) |
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376 | { |
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377 | _IBMPC_outch(buffer[count]); |
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378 | if (buffer[count] == '\n') |
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379 | _IBMPC_outch('\r'); /* LF = LF + CR */ |
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380 | } |
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381 | |
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382 | rw_args->bytes_moved = maximum; |
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383 | return RTEMS_SUCCESSFUL; |
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384 | } /* console_write */ |
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385 | |
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386 | |
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387 | |
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388 | /* |
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389 | * Handle ioctl request. |
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390 | */ |
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391 | rtems_device_driver |
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392 | console_control(rtems_device_major_number major, |
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393 | rtems_device_minor_number minor, |
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394 | void * arg |
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395 | ) |
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396 | { |
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397 | if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE) |
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398 | { |
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399 | return rtems_termios_ioctl (arg); |
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400 | } |
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401 | |
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402 | return RTEMS_SUCCESSFUL; |
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403 | } |
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404 | |
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405 | static int |
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406 | conSetAttr(int minor, const struct termios *t) |
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407 | { |
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408 | int baud; |
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409 | |
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410 | switch (t->c_cflag & CBAUD) |
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411 | { |
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412 | case B50: |
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413 | baud = 50; |
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414 | break; |
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415 | case B75: |
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416 | baud = 75; |
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417 | break; |
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418 | case B110: |
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419 | baud = 110; |
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420 | break; |
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421 | case B134: |
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422 | baud = 134; |
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423 | break; |
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424 | case B150: |
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425 | baud = 150; |
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426 | break; |
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427 | case B200: |
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428 | baud = 200; |
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429 | break; |
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430 | case B300: |
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431 | baud = 300; |
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432 | break; |
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433 | case B600: |
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434 | baud = 600; |
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435 | break; |
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436 | case B1200: |
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437 | baud = 1200; |
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438 | break; |
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439 | case B1800: |
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440 | baud = 1800; |
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441 | break; |
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442 | case B2400: |
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443 | baud = 2400; |
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444 | break; |
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445 | case B4800: |
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446 | baud = 4800; |
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447 | break; |
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448 | case B9600: |
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449 | baud = 9600; |
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450 | break; |
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451 | case B19200: |
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452 | baud = 19200; |
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453 | break; |
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454 | case B38400: |
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455 | baud = 38400; |
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456 | break; |
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457 | case B57600: |
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458 | baud = 57600; |
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459 | break; |
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460 | case B115200: |
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461 | baud = 115200; |
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462 | break; |
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463 | default: |
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464 | baud = 0; |
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465 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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466 | return 0; |
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467 | } |
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468 | |
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469 | PC386_uart_set_baud(PC386ConsolePort, baud); |
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470 | |
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471 | return 0; |
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472 | } |
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473 | |
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474 | |
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475 | |
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476 | |
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477 | |
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478 | |
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479 | |
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480 | |
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481 | |
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