1 | /*-------------------------------------------------------------------------+ |
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2 | | console.c - ARM BSP |
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3 | +--------------------------------------------------------------------------+ |
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4 | | This file contains the ARM console I/O package. |
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5 | +--------------------------------------------------------------------------+ |
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6 | | COPYRIGHT (c) 2000 Canon Research France SA. |
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7 | | Emmanuel Raguet, mailto:raguet@crf.canon.fr |
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8 | | |
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9 | | The license and distribution terms for this file may be |
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10 | | found in found in the file LICENSE in this distribution or at |
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11 | | http://www.OARcorp.com/rtems/license.html. |
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12 | | |
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13 | | $Id$ |
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14 | +--------------------------------------------------------------------------*/ |
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15 | |
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16 | #include <stdio.h> |
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17 | #include <stdlib.h> |
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18 | #include <assert.h> |
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19 | #include <unistd.h> |
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20 | #undef __assert |
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21 | void __assert (const char *file, int line, const char *msg); |
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22 | |
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23 | #include <bsp.h> |
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24 | #include <rtems/bspIo.h> |
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25 | #include <irq.h> |
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26 | #include <rtems/libio.h> |
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27 | #include <termios.h> |
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28 | #include <registers.h> |
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29 | #include <uart.h> |
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30 | |
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31 | /* |
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32 | * Possible value for console input/output : |
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33 | * BSP_CONSOLE_PORT_CONSOLE |
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34 | * BSP_UART_COM1 |
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35 | * BSP_UART_COM2 |
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36 | * |
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37 | * Note: |
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38 | * 1. Currently BSPPrintkPort, cannot be assigned to COM2, |
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39 | * it will be fixed soon. |
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40 | * |
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41 | * 2. If both BSPConsolePort and BSPPrintkport are assigned |
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42 | * to same serial device it does not work that great |
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43 | */ |
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44 | |
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45 | int BSPConsolePort = BSP_UART_COM1; |
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46 | int BSPPrintkPort = BSP_UART_COM1; |
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47 | |
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48 | int BSPBaseBaud = 115200; |
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49 | |
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50 | |
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51 | /*-------------------------------------------------------------------------+ |
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52 | | External Prototypes |
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53 | +--------------------------------------------------------------------------*/ |
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54 | extern char BSP_wait_polled_input(void); |
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55 | extern BSP_polling_getchar_function_type BSP_poll_char; |
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56 | extern void rtemsReboot(void); |
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57 | |
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58 | static int conSetAttr(int minor, const struct termios *); |
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59 | static void isr_on(const rtems_irq_connect_data *); |
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60 | static void isr_off(const rtems_irq_connect_data *); |
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61 | static int isr_is_on(const rtems_irq_connect_data *); |
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62 | |
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63 | /* |
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64 | * BSP initialization |
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65 | */ |
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66 | |
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67 | /* for printk support */ |
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68 | BSP_output_char_function_type BSP_output_char = |
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69 | (BSP_output_char_function_type) BSP_output_char_via_serial; |
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70 | BSP_polling_getchar_function_type BSP_poll_char = |
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71 | (BSP_polling_getchar_function_type) BSP_poll_char_via_serial; |
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72 | |
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73 | |
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74 | static rtems_irq_connect_data console_isr_data = {BSP_UART, |
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75 | BSP_uart_termios_isr_com1, |
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76 | isr_on, |
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77 | isr_off, |
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78 | isr_is_on}; |
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79 | |
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80 | static void |
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81 | isr_on(const rtems_irq_connect_data *unused) |
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82 | { |
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83 | return; |
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84 | } |
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85 | |
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86 | static void |
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87 | isr_off(const rtems_irq_connect_data *unused) |
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88 | { |
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89 | return; |
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90 | } |
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91 | |
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92 | static int |
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93 | isr_is_on(const rtems_irq_connect_data *irq) |
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94 | { |
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95 | if (Regs[INTMASK] & 0x4) |
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96 | return 0; |
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97 | else |
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98 | return 1; |
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99 | } |
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100 | |
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101 | void __assert (const char *file, int line, const char *msg) |
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102 | { |
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103 | static char exit_msg[] = "EXECUTIVE SHUTDOWN! Any key to reboot..."; |
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104 | unsigned char ch; |
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105 | |
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106 | /* |
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107 | * Note we cannot call exit or printf from here, |
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108 | * assert can fail inside ISR too |
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109 | */ |
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110 | |
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111 | /* |
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112 | * Close console |
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113 | */ |
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114 | close(2); |
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115 | close(1); |
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116 | close(0); |
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117 | |
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118 | printk("\nassert failed: %s: ", file); |
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119 | printk("%d: ", line); |
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120 | printk("%s\n\n", msg); |
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121 | printk(exit_msg); |
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122 | ch = BSP_poll_char(); |
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123 | printk("\n\n"); |
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124 | rtemsReboot(); |
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125 | |
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126 | } |
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127 | |
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128 | |
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129 | /*-------------------------------------------------------------------------+ |
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130 | | Console device driver INITIALIZE entry point. |
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131 | +--------------------------------------------------------------------------+ |
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132 | | Initilizes the I/O console (keyboard + VGA display) driver. |
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133 | +--------------------------------------------------------------------------*/ |
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134 | rtems_device_driver |
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135 | console_initialize(rtems_device_major_number major, |
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136 | rtems_device_minor_number minor, |
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137 | void *arg) |
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138 | { |
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139 | rtems_status_code status; |
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140 | |
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141 | /* |
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142 | * Set up TERMIOS |
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143 | */ |
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144 | rtems_termios_initialize (); |
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145 | |
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146 | /* |
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147 | * Do device-specific initialization |
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148 | */ |
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149 | |
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150 | /* 38400-8-N-1 */ |
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151 | BSP_uart_init(BSPConsolePort, 38400, 0); |
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152 | |
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153 | |
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154 | /* Set interrupt handler */ |
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155 | console_isr_data.name = BSP_UART; |
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156 | console_isr_data.hdl = BSP_uart_termios_isr_com1; |
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157 | console_isr_data.irqLevel = 3; |
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158 | console_isr_data.irqTrigger = 0; |
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159 | |
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160 | status = BSP_install_rtems_irq_handler(&console_isr_data); |
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161 | |
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162 | if (!status){ |
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163 | printk("Error installing serial console interrupt handler!\n"); |
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164 | rtems_fatal_error_occurred(status); |
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165 | } |
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166 | |
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167 | /* |
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168 | * Register the device |
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169 | */ |
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170 | status = rtems_io_register_name ("/dev/console", major, 0); |
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171 | if (status != RTEMS_SUCCESSFUL) |
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172 | { |
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173 | printk("Error registering console device!\n"); |
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174 | rtems_fatal_error_occurred (status); |
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175 | } |
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176 | |
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177 | printk("Initialized console on port COM1 38400-8-N-1\n\n"); |
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178 | |
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179 | return RTEMS_SUCCESSFUL; |
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180 | } /* console_initialize */ |
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181 | |
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182 | |
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183 | static int console_last_close(int major, int minor, void *arg) |
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184 | { |
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185 | BSP_remove_rtems_irq_handler (&console_isr_data); |
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186 | |
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187 | return 0; |
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188 | } |
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189 | |
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190 | /*-------------------------------------------------------------------------+ |
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191 | | Console device driver OPEN entry point |
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192 | +--------------------------------------------------------------------------*/ |
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193 | rtems_device_driver |
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194 | console_open(rtems_device_major_number major, |
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195 | rtems_device_minor_number minor, |
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196 | void *arg) |
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197 | { |
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198 | rtems_status_code status; |
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199 | static rtems_termios_callbacks cb = |
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200 | { |
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201 | NULL, /* firstOpen */ |
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202 | console_last_close, /* lastClose */ |
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203 | NULL, /* pollRead */ |
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204 | BSP_uart_termios_write_com1, /* write */ |
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205 | conSetAttr, /* setAttributes */ |
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206 | NULL, /* stopRemoteTx */ |
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207 | NULL, /* startRemoteTx */ |
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208 | 1 /* outputUsesInterrupts */ |
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209 | }; |
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210 | |
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211 | status = rtems_termios_open (major, minor, arg, &cb); |
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212 | |
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213 | if(status != RTEMS_SUCCESSFUL) |
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214 | { |
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215 | printk("Error openning console device\n"); |
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216 | return status; |
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217 | } |
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218 | |
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219 | /* |
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220 | * Pass data area info down to driver |
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221 | */ |
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222 | BSP_uart_termios_set(BSPConsolePort, |
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223 | ((rtems_libio_open_close_args_t *)arg)->iop->data1); |
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224 | |
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225 | /* Enable interrupts on channel */ |
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226 | BSP_uart_intr_ctrl(BSPConsolePort, BSP_UART_INTR_CTRL_TERMIOS); |
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227 | |
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228 | return RTEMS_SUCCESSFUL; |
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229 | } |
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230 | |
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231 | /*-------------------------------------------------------------------------+ |
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232 | | Console device driver CLOSE entry point |
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233 | +--------------------------------------------------------------------------*/ |
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234 | rtems_device_driver |
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235 | console_close(rtems_device_major_number major, |
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236 | rtems_device_minor_number minor, |
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237 | void *arg) |
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238 | { |
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239 | rtems_device_driver res = RTEMS_SUCCESSFUL; |
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240 | |
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241 | res = rtems_termios_close (arg); |
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242 | |
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243 | return res; |
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244 | } /* console_close */ |
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245 | |
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246 | |
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247 | /*-------------------------------------------------------------------------+ |
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248 | | Console device driver READ entry point. |
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249 | +--------------------------------------------------------------------------+ |
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250 | | Read characters from the I/O console. We only have stdin. |
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251 | +--------------------------------------------------------------------------*/ |
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252 | rtems_device_driver |
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253 | console_read(rtems_device_major_number major, |
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254 | rtems_device_minor_number minor, |
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255 | void *arg) |
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256 | { |
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257 | |
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258 | return rtems_termios_read (arg); |
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259 | |
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260 | } /* console_read */ |
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261 | |
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262 | |
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263 | /*-------------------------------------------------------------------------+ |
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264 | | Console device driver WRITE entry point. |
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265 | +--------------------------------------------------------------------------+ |
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266 | | Write characters to the I/O console. Stderr and stdout are the same. |
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267 | +--------------------------------------------------------------------------*/ |
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268 | rtems_device_driver |
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269 | console_write(rtems_device_major_number major, |
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270 | rtems_device_minor_number minor, |
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271 | void * arg) |
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272 | { |
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273 | |
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274 | return rtems_termios_write (arg); |
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275 | |
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276 | } /* console_write */ |
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277 | |
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278 | |
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279 | |
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280 | /* |
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281 | * Handle ioctl request. |
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282 | */ |
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283 | rtems_device_driver |
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284 | console_control(rtems_device_major_number major, |
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285 | rtems_device_minor_number minor, |
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286 | void * arg |
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287 | ) |
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288 | { |
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289 | return rtems_termios_ioctl (arg); |
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290 | } |
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291 | |
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292 | static int |
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293 | conSetAttr(int minor, const struct termios *t) |
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294 | { |
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295 | int baud; |
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296 | |
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297 | switch (t->c_cflag & CBAUD) |
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298 | { |
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299 | case B50: |
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300 | baud = 50; |
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301 | break; |
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302 | case B75: |
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303 | baud = 75; |
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304 | break; |
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305 | case B110: |
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306 | baud = 110; |
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307 | break; |
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308 | case B134: |
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309 | baud = 134; |
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310 | break; |
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311 | case B150: |
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312 | baud = 150; |
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313 | break; |
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314 | case B200: |
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315 | baud = 200; |
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316 | break; |
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317 | case B300: |
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318 | baud = 300; |
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319 | break; |
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320 | case B600: |
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321 | baud = 600; |
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322 | break; |
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323 | case B1200: |
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324 | baud = 1200; |
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325 | break; |
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326 | case B1800: |
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327 | baud = 1800; |
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328 | break; |
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329 | case B2400: |
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330 | baud = 2400; |
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331 | break; |
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332 | case B4800: |
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333 | baud = 4800; |
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334 | break; |
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335 | case B9600: |
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336 | baud = 9600; |
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337 | break; |
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338 | case B19200: |
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339 | baud = 19200; |
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340 | break; |
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341 | case B38400: |
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342 | baud = 38400; |
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343 | break; |
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344 | case B57600: |
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345 | baud = 57600; |
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346 | break; |
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347 | case B115200: |
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348 | baud = 115200; |
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349 | break; |
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350 | default: |
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351 | baud = 0; |
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352 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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353 | return 0; |
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354 | } |
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355 | |
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356 | BSP_uart_set_baud(BSPConsolePort, baud); |
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357 | |
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358 | return 0; |
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359 | } |
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360 | |
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361 | |
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