1 | /* |
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2 | * (C) Copyright 2002 |
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3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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4 | * |
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5 | * See file CREDITS for list of people who contributed to this |
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6 | * project. |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or |
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9 | * modify it under the terms of the GNU General Public License as |
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10 | * published by the Free Software Foundation; either version 2 of |
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11 | * the License, or (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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21 | * MA 02111-1307 USA |
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22 | */ |
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23 | |
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24 | #include <config.h> |
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25 | #include <common.h> |
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26 | |
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27 | #include "sconsole.h" |
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28 | |
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29 | DECLARE_GLOBAL_DATA_PTR; |
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30 | |
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31 | void (*sconsole_putc) (char) = 0; |
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32 | void (*sconsole_puts) (const char *) = 0; |
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33 | int (*sconsole_getc) (void) = 0; |
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34 | int (*sconsole_tstc) (void) = 0; |
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35 | void (*sconsole_setbrg) (void) = 0; |
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36 | |
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37 | int serial_init (void) |
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38 | { |
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39 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
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40 | |
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41 | sb->pos = 0; |
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42 | sb->size = 0; |
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43 | sb->baud = gd->baudrate; |
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44 | sb->max_size = CFG_SCONSOLE_SIZE - sizeof (sconsole_buffer_t); |
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45 | |
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46 | return (0); |
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47 | } |
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48 | |
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49 | void serial_putc (char c) |
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50 | { |
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51 | if (sconsole_putc) { |
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52 | (*sconsole_putc) (c); |
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53 | } else { |
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54 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
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55 | |
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56 | if (c) { |
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57 | sb->data[sb->pos++] = c; |
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58 | if (sb->pos == sb->max_size) { |
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59 | sb->pos = 0; |
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60 | } |
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61 | if (sb->size < sb->max_size) { |
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62 | sb->size++; |
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63 | } |
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64 | } |
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65 | } |
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66 | } |
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67 | |
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68 | void serial_puts (const char *s) |
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69 | { |
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70 | if (sconsole_puts) { |
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71 | (*sconsole_puts) (s); |
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72 | } else { |
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73 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
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74 | |
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75 | while (*s) { |
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76 | sb->data[sb->pos++] = *s++; |
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77 | if (sb->pos == sb->max_size) { |
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78 | sb->pos = 0; |
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79 | } |
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80 | if (sb->size < sb->max_size) { |
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81 | sb->size++; |
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82 | } |
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83 | } |
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84 | } |
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85 | } |
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86 | |
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87 | int serial_getc (void) |
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88 | { |
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89 | if (sconsole_getc) { |
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90 | return (*sconsole_getc) (); |
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91 | } else { |
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92 | return 0; |
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93 | } |
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94 | } |
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95 | |
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96 | int serial_tstc (void) |
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97 | { |
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98 | if (sconsole_tstc) { |
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99 | return (*sconsole_tstc) (); |
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100 | } else { |
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101 | return 0; |
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102 | } |
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103 | } |
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104 | |
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105 | void serial_setbrg (void) |
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106 | { |
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107 | if (sconsole_setbrg) { |
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108 | (*sconsole_setbrg) (); |
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109 | } else { |
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110 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
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111 | |
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112 | sb->baud = gd->baudrate; |
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113 | } |
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114 | } |
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115 | |
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116 | int sconsole_get_baudrate (void) |
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117 | { |
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118 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
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119 | |
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120 | return sb->baud; |
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121 | } |
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122 | |
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123 | void sconsole_flush (void) |
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124 | { |
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125 | if (sconsole_putc) { |
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126 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
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127 | unsigned int end = sb->pos < sb->size |
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128 | ? sb->pos + sb->max_size - sb->size |
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129 | : sb->pos - sb->size; |
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130 | |
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131 | while (sb->size) { |
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132 | (*sconsole_putc) (sb->data[end++]); |
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133 | if (end == sb->max_size) { |
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134 | end = 0; |
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135 | } |
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136 | sb->size--; |
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137 | } |
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138 | } |
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139 | } |
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