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) 1989-1999. |
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23 | | * On-Line Applications Research Corporation (OAR). |
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24 | | * |
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25 | | * The license and distribution terms for this file may be |
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26 | | * found in found in the file LICENSE in this distribution or at |
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27 | | * http://www.OARcorp.com/rtems/license.html. |
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28 | | ************************************************************************** |
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29 | | |
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30 | | $Id$ |
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31 | +--------------------------------------------------------------------------*/ |
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32 | |
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33 | #include <stdio.h> |
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34 | #include <stdlib.h> |
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35 | #include <assert.h> |
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36 | #include <unistd.h> |
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37 | #undef __assert |
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38 | void __assert (const char *file, int line, const char *msg); |
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39 | |
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40 | #include <bsp.h> |
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41 | #include <irq.h> |
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42 | #include <rtems/libio.h> |
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43 | #include <termios.h> |
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44 | #include <uart.h> |
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45 | #include <libcpu/cpuModel.h> |
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46 | |
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47 | /* |
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48 | * Possible value for console input/output : |
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49 | * BSP_CONSOLE_PORT_CONSOLE |
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50 | * BSP_UART_COM1 |
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51 | * BSP_UART_COM2 |
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52 | * |
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53 | * Note: |
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54 | * 1. Currently BSPPrintkPort, cannot be assigned to COM2, |
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55 | * it will be fixed soon. |
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56 | * |
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57 | * 2. If both BSPConsolePort and BSPPrintkport are assigned |
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58 | * to same serial device it does not work that great |
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59 | */ |
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60 | |
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61 | int BSPConsolePort = BSP_CONSOLE_PORT_CONSOLE; |
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62 | int BSPPrintkPort = BSP_CONSOLE_PORT_CONSOLE; |
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63 | |
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64 | /* int BSPConsolePort = BSP_UART_COM2; */ |
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65 | int BSPBaseBaud = 115200; |
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66 | |
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67 | extern BSP_polling_getchar_function_type BSP_poll_char; |
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68 | |
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69 | /*-------------------------------------------------------------------------+ |
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70 | | External Prototypes |
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71 | +--------------------------------------------------------------------------*/ |
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72 | extern void _IBMPC_keyboard_isr(void); |
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73 | extern rtems_boolean _IBMPC_scankey(char *); /* defined in 'inch.c' */ |
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74 | extern char BSP_wait_polled_input(void); |
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75 | extern void _IBMPC_initVideo(void); |
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76 | |
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77 | static int conSetAttr(int minor, const struct termios *); |
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78 | static void isr_on(const rtems_irq_connect_data *); |
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79 | static void isr_off(const rtems_irq_connect_data *); |
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80 | static int isr_is_on(const rtems_irq_connect_data *); |
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81 | |
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82 | |
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83 | static rtems_irq_connect_data console_isr_data = {BSP_KEYBOARD, |
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84 | _IBMPC_keyboard_isr, |
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85 | isr_on, |
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86 | isr_off, |
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87 | isr_is_on}; |
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88 | |
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89 | static void |
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90 | isr_on(const rtems_irq_connect_data *unused) |
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91 | { |
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92 | return; |
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93 | } |
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94 | |
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95 | static void |
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96 | isr_off(const rtems_irq_connect_data *unused) |
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97 | { |
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98 | return; |
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99 | } |
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100 | |
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101 | static int |
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102 | isr_is_on(const rtems_irq_connect_data *irq) |
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103 | { |
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104 | return BSP_irq_enabled_at_i8259s(irq->name); |
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105 | } |
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106 | |
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107 | void console_reserve_resources(rtems_configuration_table *conf) |
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108 | { |
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109 | if(BSPConsolePort != BSP_CONSOLE_PORT_CONSOLE) |
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110 | { |
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111 | rtems_termios_reserve_resources(conf, 1); |
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112 | } |
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113 | |
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114 | return; |
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115 | } |
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116 | |
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117 | void __assert (const char *file, int line, const char *msg) |
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118 | { |
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119 | static char exit_msg[] = "EXECUTIVE SHUTDOWN! Any key to reboot..."; |
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120 | unsigned char ch; |
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121 | |
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122 | /* |
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123 | * Note we cannot call exit or printf from here, |
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124 | * assert can fail inside ISR too |
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125 | */ |
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126 | |
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127 | /* |
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128 | * Close console |
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129 | */ |
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130 | close(2); |
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131 | close(1); |
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132 | close(0); |
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133 | |
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134 | printk("\nassert failed: %s: ", file); |
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135 | printk("%d: ", line); |
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136 | printk("%s\n\n", msg); |
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137 | printk(exit_msg); |
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138 | ch = BSP_poll_char(); |
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139 | printk("\n\n"); |
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140 | rtemsReboot(); |
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141 | |
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142 | } |
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143 | |
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144 | |
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145 | /*-------------------------------------------------------------------------+ |
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146 | | Console device driver INITIALIZE entry point. |
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147 | +--------------------------------------------------------------------------+ |
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148 | | Initilizes the I/O console (keyboard + VGA display) driver. |
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149 | +--------------------------------------------------------------------------*/ |
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150 | rtems_device_driver |
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151 | console_initialize(rtems_device_major_number major, |
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152 | rtems_device_minor_number minor, |
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153 | void *arg) |
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154 | { |
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155 | rtems_status_code status; |
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156 | |
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157 | /* |
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158 | * The video was initialized in the start.s code and does not need |
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159 | * to be reinitialized. |
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160 | */ |
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161 | |
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162 | |
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163 | if(BSPConsolePort == BSP_CONSOLE_PORT_CONSOLE) |
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164 | { |
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165 | /* Install keyboard interrupt handler */ |
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166 | status = BSP_install_rtems_irq_handler(&console_isr_data); |
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167 | |
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168 | if (!status) |
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169 | { |
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170 | printk("Error installing keyboard interrupt handler!\n"); |
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171 | rtems_fatal_error_occurred(status); |
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172 | } |
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173 | |
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174 | status = rtems_io_register_name("/dev/console", major, 0); |
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175 | if (status != RTEMS_SUCCESSFUL) |
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176 | { |
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177 | printk("Error registering console device!\n"); |
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178 | rtems_fatal_error_occurred(status); |
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179 | } |
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180 | printk("Initialized console on port CONSOLE\n\n"); |
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181 | } |
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182 | else |
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183 | { |
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184 | /* |
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185 | * Set up TERMIOS |
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186 | */ |
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187 | rtems_termios_initialize (); |
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188 | |
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189 | /* |
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190 | * Do device-specific initialization |
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191 | */ |
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192 | |
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193 | /* 9600-8-N-1 */ |
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194 | BSP_uart_init(BSPConsolePort, 9600, 0); |
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195 | |
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196 | |
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197 | /* Set interrupt handler */ |
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198 | if(BSPConsolePort == BSP_UART_COM1) |
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199 | { |
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200 | console_isr_data.name = BSP_UART_COM1_IRQ; |
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201 | console_isr_data.hdl = BSP_uart_termios_isr_com1; |
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202 | |
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203 | } |
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204 | else |
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205 | { |
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206 | assert(BSPConsolePort == BSP_UART_COM2); |
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207 | console_isr_data.name = BSP_UART_COM2_IRQ; |
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208 | console_isr_data.hdl = BSP_uart_termios_isr_com2; |
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209 | } |
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210 | |
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211 | status = BSP_install_rtems_irq_handler(&console_isr_data); |
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212 | |
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213 | if (!status){ |
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214 | printk("Error installing serial console interrupt handler!\n"); |
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215 | rtems_fatal_error_occurred(status); |
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216 | } |
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217 | /* |
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218 | * Register the device |
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219 | */ |
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220 | status = rtems_io_register_name ("/dev/console", major, 0); |
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221 | if (status != RTEMS_SUCCESSFUL) |
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222 | { |
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223 | printk("Error registering console device!\n"); |
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224 | rtems_fatal_error_occurred (status); |
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225 | } |
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226 | |
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227 | if(BSPConsolePort == BSP_UART_COM1) |
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228 | { |
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229 | printk("Initialized console on port COM1 9600-8-N-1\n\n"); |
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230 | } |
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231 | else |
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232 | { |
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233 | printk("Initialized console on port COM2 9600-8-N-1\n\n"); |
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234 | } |
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235 | |
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236 | if(BSPPrintkPort == BSP_UART_COM1) |
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237 | { |
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238 | printk("Warning : This will be the last message on console\n"); |
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239 | |
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240 | /* |
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241 | * FIXME: cast below defeats the very idea of having |
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242 | * function pointer types defined |
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243 | */ |
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244 | BSP_output_char = (BSP_output_char_function_type) |
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245 | BSP_output_char_via_serial; |
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246 | BSP_poll_char = (BSP_polling_getchar_function_type) |
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247 | BSP_poll_char_via_serial; |
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248 | } |
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249 | else if(BSPPrintkPort != BSP_CONSOLE_PORT_CONSOLE) |
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250 | { |
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251 | printk("illegal assignement of projtk channel"); |
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252 | rtems_fatal_error_occurred (status); |
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253 | } |
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254 | |
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255 | } |
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256 | return RTEMS_SUCCESSFUL; |
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257 | } /* console_initialize */ |
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258 | |
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259 | |
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260 | static int console_open_count = 0; |
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261 | |
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262 | static int console_last_close(int major, int minor, void *arg) |
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263 | { |
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264 | BSP_remove_rtems_irq_handler (&console_isr_data); |
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265 | |
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266 | return 0; |
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267 | } |
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268 | |
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269 | /*-------------------------------------------------------------------------+ |
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270 | | Console device driver OPEN entry point |
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271 | +--------------------------------------------------------------------------*/ |
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272 | rtems_device_driver |
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273 | console_open(rtems_device_major_number major, |
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274 | rtems_device_minor_number minor, |
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275 | void *arg) |
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276 | { |
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277 | rtems_status_code status; |
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278 | static rtems_termios_callbacks cb = |
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279 | { |
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280 | NULL, /* firstOpen */ |
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281 | console_last_close, /* lastClose */ |
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282 | NULL, /* pollRead */ |
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283 | BSP_uart_termios_write_com1, /* write */ |
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284 | conSetAttr, /* setAttributes */ |
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285 | NULL, /* stopRemoteTx */ |
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286 | NULL, /* startRemoteTx */ |
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287 | 1 /* outputUsesInterrupts */ |
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288 | }; |
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289 | |
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290 | if(BSPConsolePort == BSP_CONSOLE_PORT_CONSOLE) |
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291 | { |
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292 | ++console_open_count; |
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293 | return RTEMS_SUCCESSFUL; |
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294 | } |
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295 | |
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296 | if(BSPConsolePort == BSP_UART_COM2) |
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297 | { |
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298 | cb.write = BSP_uart_termios_write_com2; |
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299 | } |
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300 | |
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301 | status = rtems_termios_open (major, minor, arg, &cb); |
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302 | |
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303 | if(status != RTEMS_SUCCESSFUL) |
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304 | { |
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305 | printk("Error openning console device\n"); |
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306 | return status; |
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307 | } |
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308 | |
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309 | /* |
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310 | * Pass data area info down to driver |
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311 | */ |
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312 | BSP_uart_termios_set(BSPConsolePort, |
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313 | ((rtems_libio_open_close_args_t *)arg)->iop->data1); |
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314 | |
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315 | /* Enable interrupts on channel */ |
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316 | BSP_uart_intr_ctrl(BSPConsolePort, BSP_UART_INTR_CTRL_TERMIOS); |
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317 | |
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318 | return RTEMS_SUCCESSFUL; |
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319 | } |
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320 | |
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321 | /*-------------------------------------------------------------------------+ |
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322 | | Console device driver CLOSE entry point |
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323 | +--------------------------------------------------------------------------*/ |
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324 | rtems_device_driver |
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325 | console_close(rtems_device_major_number major, |
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326 | rtems_device_minor_number minor, |
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327 | void *arg) |
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328 | { |
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329 | rtems_device_driver res = RTEMS_SUCCESSFUL; |
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330 | |
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331 | if(BSPConsolePort != BSP_CONSOLE_PORT_CONSOLE) |
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332 | { |
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333 | res = rtems_termios_close (arg); |
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334 | } |
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335 | else { |
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336 | if (--console_open_count == 0) { |
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337 | console_last_close(major, minor, arg); |
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338 | } |
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339 | } |
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340 | |
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341 | return res; |
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342 | } /* console_close */ |
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343 | |
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344 | |
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345 | /*-------------------------------------------------------------------------+ |
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346 | | Console device driver READ entry point. |
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347 | +--------------------------------------------------------------------------+ |
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348 | | Read characters from the I/O console. We only have stdin. |
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349 | +--------------------------------------------------------------------------*/ |
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350 | rtems_device_driver |
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351 | console_read(rtems_device_major_number major, |
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352 | rtems_device_minor_number minor, |
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353 | void *arg) |
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354 | { |
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355 | rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg; |
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356 | char *buffer = rw_args->buffer; |
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357 | int count, maximum = rw_args->count; |
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358 | |
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359 | if(BSPConsolePort != BSP_CONSOLE_PORT_CONSOLE) |
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360 | { |
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361 | return rtems_termios_read (arg); |
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362 | } |
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363 | |
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364 | for (count = 0; count < maximum; count++) |
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365 | { |
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366 | /* Get character */ |
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367 | buffer[count] = _IBMPC_inch_sleep(); |
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368 | |
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369 | /* Echo character to screen */ |
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370 | _IBMPC_outch(buffer[count]); |
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371 | if (buffer[count] == '\r') |
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372 | { |
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373 | _IBMPC_outch('\n'); /* CR = CR + LF */ |
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374 | } |
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375 | |
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376 | if (buffer[count] == '\n' || buffer[count] == '\r') |
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377 | { |
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378 | /* What if this goes past the end of the buffer? We're hosed. [bhc] */ |
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379 | buffer[count++] = '\n'; |
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380 | buffer[count] = '\0'; |
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381 | break; |
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382 | } |
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383 | } |
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384 | |
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385 | rw_args->bytes_moved = count; |
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386 | return ((count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED); |
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387 | } /* console_read */ |
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388 | |
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389 | |
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390 | /*-------------------------------------------------------------------------+ |
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391 | | Console device driver WRITE entry point. |
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392 | +--------------------------------------------------------------------------+ |
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393 | | Write characters to the I/O console. Stderr and stdout are the same. |
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394 | +--------------------------------------------------------------------------*/ |
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395 | rtems_device_driver |
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396 | console_write(rtems_device_major_number major, |
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397 | rtems_device_minor_number minor, |
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398 | void * arg) |
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399 | { |
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400 | rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg; |
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401 | char *buffer = rw_args->buffer; |
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402 | int count, maximum = rw_args->count; |
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403 | |
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404 | if(BSPConsolePort != BSP_CONSOLE_PORT_CONSOLE) |
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405 | { |
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406 | return rtems_termios_write (arg); |
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407 | } |
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408 | |
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409 | for (count = 0; count < maximum; count++) |
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410 | { |
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411 | _IBMPC_outch(buffer[count]); |
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412 | if (buffer[count] == '\n') |
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413 | _IBMPC_outch('\r'); /* LF = LF + CR */ |
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414 | } |
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415 | |
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416 | rw_args->bytes_moved = maximum; |
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417 | return RTEMS_SUCCESSFUL; |
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418 | } /* console_write */ |
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419 | |
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420 | |
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421 | |
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422 | /* |
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423 | * Handle ioctl request. |
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424 | */ |
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425 | rtems_device_driver |
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426 | console_control(rtems_device_major_number major, |
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427 | rtems_device_minor_number minor, |
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428 | void * arg |
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429 | ) |
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430 | { |
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431 | if(BSPConsolePort != BSP_CONSOLE_PORT_CONSOLE) |
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432 | { |
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433 | return rtems_termios_ioctl (arg); |
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434 | } |
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435 | |
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436 | return RTEMS_SUCCESSFUL; |
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437 | } |
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438 | |
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439 | static int |
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440 | conSetAttr(int minor, const struct termios *t) |
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441 | { |
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442 | int baud; |
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443 | |
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444 | switch (t->c_cflag & CBAUD) |
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445 | { |
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446 | case B50: |
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447 | baud = 50; |
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448 | break; |
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449 | case B75: |
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450 | baud = 75; |
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451 | break; |
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452 | case B110: |
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453 | baud = 110; |
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454 | break; |
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455 | case B134: |
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456 | baud = 134; |
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457 | break; |
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458 | case B150: |
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459 | baud = 150; |
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460 | break; |
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461 | case B200: |
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462 | baud = 200; |
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463 | break; |
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464 | case B300: |
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465 | baud = 300; |
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466 | break; |
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467 | case B600: |
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468 | baud = 600; |
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469 | break; |
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470 | case B1200: |
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471 | baud = 1200; |
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472 | break; |
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473 | case B1800: |
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474 | baud = 1800; |
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475 | break; |
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476 | case B2400: |
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477 | baud = 2400; |
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478 | break; |
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479 | case B4800: |
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480 | baud = 4800; |
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481 | break; |
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482 | case B9600: |
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483 | baud = 9600; |
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484 | break; |
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485 | case B19200: |
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486 | baud = 19200; |
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487 | break; |
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488 | case B38400: |
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489 | baud = 38400; |
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490 | break; |
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491 | case B57600: |
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492 | baud = 57600; |
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493 | break; |
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494 | case B115200: |
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495 | baud = 115200; |
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496 | break; |
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497 | default: |
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498 | baud = 0; |
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499 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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500 | return 0; |
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501 | } |
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502 | |
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503 | BSP_uart_set_baud(BSPConsolePort, baud); |
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504 | |
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505 | return 0; |
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506 | } |
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507 | |
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508 | /* |
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509 | * BSP initialization |
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510 | */ |
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511 | |
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512 | BSP_output_char_function_type BSP_output_char = |
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513 | (BSP_output_char_function_type) _IBMPC_outch; |
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514 | |
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515 | BSP_polling_getchar_function_type BSP_poll_char = BSP_wait_polled_input; |
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516 | |
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517 | |
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