[0836603] | 1 | /* |
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| 2 | * This file contains the template for a console IO package. |
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| 3 | * |
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[08311cc3] | 4 | * COPYRIGHT (c) 1989-1999. |
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[0836603] | 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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[98e4ebf5] | 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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[03f2154e] | 9 | * http://www.OARcorp.com/rtems/license.html. |
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[0836603] | 10 | * |
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| 11 | * $Id$ |
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| 12 | */ |
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| 13 | |
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| 14 | #define NO_BSP_INIT |
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| 15 | |
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| 16 | |
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| 17 | /* only one of the following can be defined */ |
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| 18 | #define SERIAL_INPUT /* use serial input */ |
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| 19 | /* #define HIF_INPUT */ /* use HIF input */ |
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| 20 | |
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| 21 | #if defined(SERIAL_INPUT) && defined(HIF_INPUT) |
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| 22 | #error SERIAL_INPUT and HIF_INPUT cannot both be defined!!! |
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| 23 | #endif |
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| 24 | |
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| 25 | /* both of the following can be defined */ |
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| 26 | #define SERIAL_OUTPUT /* remove to disable serial port console output */ |
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| 27 | /* #define HIF_OUTPUT */ /* remove to disable HIF console output */ |
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| 28 | |
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| 29 | #include <bsp.h> |
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| 30 | #include <rtems/libio.h> |
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| 31 | #include "serial.h" |
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| 32 | #include "concntl.h" |
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| 33 | |
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| 34 | #ifndef lint |
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| 35 | static char _sccsid[] = "@(#)console.c 09/12/96 1.13\n"; |
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| 36 | #endif |
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| 37 | |
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| 38 | /* console_initialize |
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| 39 | * |
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| 40 | * This routine initializes the console IO driver. |
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| 41 | * |
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| 42 | * Input parameters: NONE |
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| 43 | * |
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| 44 | * Output parameters: NONE |
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| 45 | * |
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| 46 | * Return values: |
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| 47 | */ |
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| 48 | |
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| 49 | rtems_device_driver console_initialize( |
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| 50 | rtems_device_major_number major, |
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| 51 | rtems_device_minor_number minor, |
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| 52 | void *arg |
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| 53 | ) |
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| 54 | { |
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| 55 | rtems_status_code status; |
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| 56 | |
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| 57 | if ( arg ) |
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| 58 | { |
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| 59 | if ( console_duartinit(minor,*(unsigned32*)arg) ) |
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| 60 | return RTEMS_INVALID_NUMBER; |
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| 61 | } |
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| 62 | else |
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| 63 | { |
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| 64 | if ( console_duartinit(1,9600) || console_duartinit(0,9600) ) |
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| 65 | { |
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| 66 | return RTEMS_INVALID_NUMBER; |
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| 67 | } |
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| 68 | } |
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| 69 | |
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| 70 | status = rtems_io_register_name( |
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| 71 | "/dev/console", |
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| 72 | major, |
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| 73 | (rtems_device_minor_number) 0 |
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| 74 | ); |
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| 75 | |
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| 76 | if (status != RTEMS_SUCCESSFUL) |
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| 77 | rtems_fatal_error_occurred(status); |
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| 78 | |
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| 79 | return RTEMS_SUCCESSFUL; |
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| 80 | } |
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| 81 | |
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| 82 | |
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| 83 | /* is_character_ready |
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| 84 | * |
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| 85 | * This routine returns TRUE if a character is available. |
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| 86 | * |
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| 87 | * Input parameters: NONE |
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| 88 | * |
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| 89 | * Output parameters: NONE |
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| 90 | * |
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| 91 | * Return values: |
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| 92 | */ |
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| 93 | |
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| 94 | rtems_boolean is_character_ready( |
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| 95 | char *ch |
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| 96 | ) |
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| 97 | { |
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| 98 | *ch = '\0'; /* return NULL for no particular reason */ |
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| 99 | return(TRUE); |
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| 100 | } |
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| 101 | |
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| 102 | /* inbyte |
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| 103 | * |
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| 104 | * This routine reads a character from the SOURCE. |
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| 105 | * |
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| 106 | * Input parameters: NONE |
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| 107 | * |
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| 108 | * Output parameters: NONE |
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| 109 | * |
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| 110 | * Return values: |
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| 111 | * character read from SOURCE |
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| 112 | */ |
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| 113 | |
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| 114 | char inbyte( unsigned int minor ) |
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| 115 | { |
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| 116 | /* |
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| 117 | * If polling, wait until a character is available. |
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| 118 | */ |
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| 119 | #ifdef HIF_INPUT |
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| 120 | char retch; |
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| 121 | _read( 1, &retch, 1 ); |
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| 122 | return retch; |
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| 123 | #endif |
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| 124 | #ifdef SERIAL_INPUT |
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| 125 | return console_sps_getc( minor ); |
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| 126 | #endif |
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| 127 | } |
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| 128 | |
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| 129 | /* outbyte |
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| 130 | * |
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| 131 | * This routine transmits a character out the SOURCE. It may support |
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| 132 | * XON/XOFF flow control. |
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| 133 | * |
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| 134 | * Input parameters: |
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| 135 | * ch - character to be transmitted |
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| 136 | * |
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| 137 | * Output parameters: NONE |
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| 138 | */ |
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| 139 | |
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| 140 | void outbyte( unsigned int minor, |
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| 141 | char ch |
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| 142 | ) |
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| 143 | { |
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| 144 | /* |
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| 145 | * If polling, wait for the transmitter to be ready. |
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| 146 | * Check for flow control requests and process. |
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| 147 | * Then output the character. |
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| 148 | */ |
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| 149 | |
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| 150 | #ifdef SERIAL_OUTPUT |
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| 151 | console_sps_putc( minor, ch ); |
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| 152 | #endif |
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| 153 | |
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| 154 | /* |
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| 155 | * Carriage Return/New line translation. |
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| 156 | */ |
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| 157 | |
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| 158 | if ( ch == '\n' ) |
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| 159 | outbyte( minor, '\r' ); |
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| 160 | } |
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| 161 | |
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| 162 | |
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| 163 | /* |
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| 164 | * Open entry point |
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| 165 | */ |
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| 166 | |
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| 167 | rtems_device_driver console_open( |
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| 168 | rtems_device_major_number major, |
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| 169 | rtems_device_minor_number minor, |
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| 170 | void * arg |
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| 171 | ) |
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| 172 | { |
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| 173 | return RTEMS_SUCCESSFUL; |
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| 174 | } |
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| 175 | |
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| 176 | /* |
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| 177 | * Close entry point |
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| 178 | */ |
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| 179 | |
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| 180 | rtems_device_driver console_close( |
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| 181 | rtems_device_major_number major, |
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| 182 | rtems_device_minor_number minor, |
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| 183 | void * arg |
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| 184 | ) |
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| 185 | { |
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| 186 | return RTEMS_SUCCESSFUL; |
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| 187 | } |
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| 188 | |
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| 189 | /* |
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| 190 | * read bytes from the serial port. We only have stdin. |
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| 191 | */ |
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| 192 | |
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| 193 | rtems_device_driver console_read( |
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| 194 | 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 | { |
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| 199 | rtems_libio_rw_args_t *rw_args; |
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| 200 | unsigned8 *buffer; |
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| 201 | unsigned32 maximum; |
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| 202 | unsigned32 count = 0; |
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| 203 | |
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| 204 | rw_args = (rtems_libio_rw_args_t *) arg; |
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| 205 | |
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| 206 | buffer = rw_args->buffer; |
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| 207 | maximum = rw_args->count; |
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| 208 | |
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| 209 | for (count = 0; count < maximum; count++) { |
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| 210 | buffer[ count ] = inbyte(minor); |
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| 211 | if (buffer[ count ] == '\n' || buffer[ count ] == '\r') { |
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| 212 | buffer[ count++ ] = '\n'; |
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| 213 | outbyte( minor, '\n' ); /* newline */ |
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| 214 | break; |
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| 215 | } |
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| 216 | else if (buffer[ count ] == '\b' && count > 0 ) |
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| 217 | { |
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| 218 | outbyte( minor, '\b' ); /* move back one space */ |
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| 219 | outbyte( minor, ' ' ); /* erase the character */ |
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| 220 | outbyte( minor, '\b' ); /* move back one space */ |
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| 221 | count-=2; |
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| 222 | } |
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| 223 | else |
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| 224 | outbyte( minor, buffer[ count ] ); /* echo the character */ |
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| 225 | } |
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| 226 | |
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| 227 | rw_args->bytes_moved = count; |
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| 228 | return (count > 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED; |
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| 229 | } |
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| 230 | |
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| 231 | /* |
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| 232 | * write bytes to the serial port. Stdout and stderr are the same. |
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| 233 | */ |
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| 234 | |
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| 235 | rtems_device_driver console_write( |
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| 236 | rtems_device_major_number major, |
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| 237 | rtems_device_minor_number minor, |
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| 238 | void * arg |
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| 239 | ) |
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| 240 | { |
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| 241 | int count; |
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| 242 | int maximum; |
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| 243 | rtems_libio_rw_args_t *rw_args; |
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| 244 | unsigned8 *buffer; |
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| 245 | |
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| 246 | rw_args = (rtems_libio_rw_args_t *) arg; |
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| 247 | |
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| 248 | buffer = rw_args->buffer; |
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| 249 | maximum = rw_args->count; |
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| 250 | |
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| 251 | #ifdef HIF_OUTPUT |
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| 252 | _write( 0, buffer, maximum ); |
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| 253 | #endif |
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| 254 | #ifdef SERIAL_OUTPUT |
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| 255 | for (count = 0; count < maximum; count++) { |
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| 256 | if ( buffer[ count ] == '\n') { |
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| 257 | outbyte(minor,'\r'); |
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| 258 | } |
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| 259 | outbyte( minor,buffer[ count ] ); |
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| 260 | } |
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| 261 | #endif |
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| 262 | |
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| 263 | rw_args->bytes_moved = maximum; |
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| 264 | return 0; |
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| 265 | } |
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| 266 | |
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| 267 | /* |
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| 268 | * IO Control entry point |
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| 269 | */ |
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| 270 | |
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| 271 | rtems_device_driver console_control( |
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| 272 | rtems_device_major_number major, |
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| 273 | rtems_device_minor_number minor, |
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| 274 | void * arg |
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| 275 | ) |
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| 276 | { |
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| 277 | if (!arg) |
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| 278 | return RTEMS_INVALID_ADDRESS; |
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| 279 | |
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| 280 | switch( ((console_ioctl_request_t *)arg)->ioctl_type ) |
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| 281 | { |
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| 282 | case CON_KBHIT: |
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| 283 | /* check if keyboard was hit */ |
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| 284 | ((console_ioctl_request_t *)arg)->param = console_sps_kbhit(minor); |
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| 285 | break; |
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| 286 | |
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| 287 | case CON_GET_RAW_BYTE: |
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| 288 | ((console_ioctl_request_t *)arg)->param = inbyte(minor); |
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| 289 | break; |
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| 290 | |
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| 291 | case CON_SEND_RAW_BYTE: |
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| 292 | outbyte(minor, ((console_ioctl_request_t *)arg)->param); |
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| 293 | break; |
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| 294 | |
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| 295 | default: |
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| 296 | break; |
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| 297 | } |
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| 298 | |
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| 299 | return RTEMS_SUCCESSFUL; |
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| 300 | } |
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