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Rev | Author | Line No. | Line |
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1 | jermar | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
3940 | decky | 29 | /** @addtogroup genarch_drivers |
1702 | cejka | 30 | * @{ |
31 | */ |
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1754 | jermar | 32 | /** |
33 | * @file |
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34 | * @brief EGA driver. |
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1702 | cejka | 35 | */ |
36 | |||
3779 | jermar | 37 | #include <genarch/drivers/ega/ega.h> |
1 | jermar | 38 | #include <putchar.h> |
39 | #include <mm/page.h> |
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755 | jermar | 40 | #include <mm/as.h> |
3751 | svoboda | 41 | #include <mm/slab.h> |
167 | jermar | 42 | #include <arch/mm/page.h> |
1 | jermar | 43 | #include <synch/spinlock.h> |
44 | #include <arch/types.h> |
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45 | #include <arch/asm.h> |
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195 | vana | 46 | #include <memstr.h> |
4223 | decky | 47 | #include <string.h> |
575 | palkovsky | 48 | #include <console/chardev.h> |
49 | #include <console/console.h> |
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1473 | decky | 50 | #include <sysinfo/sysinfo.h> |
2015 | jermar | 51 | #include <ddi/ddi.h> |
1 | jermar | 52 | |
53 | /* |
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54 | * The EGA driver. |
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55 | * Simple and short. Function for displaying characters and "scrolling". |
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56 | */ |
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57 | |||
623 | jermar | 58 | SPINLOCK_INITIALIZE(egalock); |
1780 | jermar | 59 | static uint32_t ega_cursor; |
60 | static uint8_t *videoram; |
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3751 | svoboda | 61 | static uint8_t *backbuf; |
3930 | jermar | 62 | static ioport8_t *ega_base; |
1 | jermar | 63 | |
4093 | decky | 64 | #define SPACE 0x20 |
4190 | decky | 65 | #define STYLE 0x1e |
66 | #define INVAL 0x17 |
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3994 | decky | 67 | |
4190 | decky | 68 | #define EMPTY_CHAR ((STYLE << 8) | SPACE) |
575 | palkovsky | 69 | |
4190 | decky | 70 | static uint16_t ega_oem_glyph(const wchar_t ch) |
71 | { |
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72 | if ((ch >= 0x0000) && (ch <= 0x007f)) |
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73 | return ch; |
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74 | |||
75 | if (ch == 0x00a0) |
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76 | return 255; |
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77 | |||
78 | if (ch == 0x00a1) |
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79 | return 173; |
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80 | |||
81 | if ((ch >= 0x00a2) && (ch <= 0x00a3)) |
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82 | return (ch - 7); |
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83 | |||
84 | if (ch == 0x00a5) |
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85 | return 157; |
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86 | |||
87 | if (ch == 0x00aa) |
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88 | return 166; |
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89 | |||
90 | if (ch == 0x00ab) |
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91 | return 174; |
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92 | |||
93 | if (ch == 0x00ac) |
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94 | return 170; |
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95 | |||
96 | if (ch == 0x00b0) |
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97 | return 248; |
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98 | |||
99 | if (ch == 0x00b1) |
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100 | return 241; |
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101 | |||
102 | if (ch == 0x00b2) |
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103 | return 253; |
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104 | |||
105 | if (ch == 0x00b5) |
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106 | return 230; |
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107 | |||
108 | if (ch == 0x00b7) |
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109 | return 250; |
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110 | |||
111 | if (ch == 0x00ba) |
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112 | return 167; |
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113 | |||
114 | if (ch == 0x00bb) |
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115 | return 175; |
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116 | |||
117 | if (ch == 0x00bc) |
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118 | return 172; |
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119 | |||
120 | if (ch == 0x00bd) |
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121 | return 171; |
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122 | |||
123 | if (ch == 0x00bf) |
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124 | return 168; |
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125 | |||
126 | if ((ch >= 0x00c4) && (ch <= 0x00c5)) |
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127 | return (ch - 54); |
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128 | |||
129 | if (ch == 0x00c6) |
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130 | return 146; |
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131 | |||
132 | if (ch == 0x00c7) |
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133 | return 128; |
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134 | |||
135 | if (ch == 0x00c9) |
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136 | return 144; |
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137 | |||
138 | if (ch == 0x00d1) |
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139 | return 165; |
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140 | |||
141 | if (ch == 0x00d6) |
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142 | return 153; |
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143 | |||
144 | if (ch == 0x00dc) |
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145 | return 154; |
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146 | |||
147 | if (ch == 0x00df) |
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148 | return 225; |
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149 | |||
150 | if (ch == 0x00e0) |
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151 | return 133; |
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152 | |||
153 | if (ch == 0x00e1) |
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154 | return 160; |
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155 | |||
156 | if (ch == 0x00e2) |
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157 | return 131; |
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158 | |||
159 | if (ch == 0x00e4) |
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160 | return 132; |
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161 | |||
162 | if (ch == 0x00e5) |
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163 | return 134; |
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164 | |||
165 | if (ch == 0x00e6) |
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166 | return 145; |
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167 | |||
168 | if (ch == 0x00e7) |
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169 | return 135; |
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170 | |||
171 | if (ch == 0x00e8) |
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172 | return 138; |
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173 | |||
174 | if (ch == 0x00e9) |
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175 | return 130; |
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176 | |||
177 | if ((ch >= 0x00ea) && (ch <= 0x00eb)) |
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178 | return (ch - 98); |
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179 | |||
180 | if (ch == 0x00ec) |
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181 | return 141; |
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182 | |||
183 | if (ch == 0x00ed) |
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184 | return 161; |
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185 | |||
186 | if (ch == 0x00ee) |
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187 | return 140; |
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188 | |||
189 | if (ch == 0x00ef) |
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190 | return 139; |
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191 | |||
192 | if (ch == 0x00f1) |
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193 | return 164; |
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194 | |||
195 | if (ch == 0x00f2) |
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196 | return 149; |
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197 | |||
198 | if (ch == 0x00f3) |
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199 | return 162; |
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200 | |||
201 | if (ch == 0x00f4) |
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202 | return 147; |
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203 | |||
204 | if (ch == 0x00f6) |
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205 | return 148; |
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206 | |||
207 | if (ch == 0x00f7) |
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208 | return 246; |
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209 | |||
210 | if (ch == 0x00f9) |
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211 | return 151; |
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212 | |||
213 | if (ch == 0x00fa) |
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214 | return 163; |
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215 | |||
216 | if (ch == 0x00fb) |
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217 | return 150; |
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218 | |||
219 | if (ch == 0x00fc) |
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220 | return 129; |
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221 | |||
222 | if (ch == 0x00ff) |
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223 | return 152; |
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224 | |||
225 | if (ch == 0x0192) |
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226 | return 159; |
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227 | |||
228 | if (ch == 0x0393) |
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229 | return 226; |
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230 | |||
231 | if (ch == 0x0398) |
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232 | return 233; |
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233 | |||
234 | if (ch == 0x03a3) |
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235 | return 228; |
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236 | |||
237 | if (ch == 0x03a6) |
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238 | return 232; |
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239 | |||
240 | if (ch == 0x03a9) |
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241 | return 234; |
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242 | |||
243 | if (ch == 0x03b1) |
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244 | return 224; |
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245 | |||
246 | if (ch == 0x03b4) |
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247 | return 235; |
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248 | |||
249 | if (ch == 0x03b5) |
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250 | return 238; |
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251 | |||
252 | if (ch == 0x03c0) |
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253 | return 227; |
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254 | |||
255 | if (ch == 0x03c3) |
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256 | return 229; |
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257 | |||
258 | if (ch == 0x03c4) |
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259 | return 231; |
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260 | |||
261 | if (ch == 0x03c6) |
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262 | return 237; |
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263 | |||
264 | if (ch == 0x207f) |
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265 | return 252; |
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266 | |||
267 | if (ch == 0x20a7) |
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268 | return 158; |
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269 | |||
270 | if (ch == 0x2219) |
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271 | return 249; |
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272 | |||
273 | if (ch == 0x221a) |
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274 | return 251; |
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275 | |||
276 | if (ch == 0x221e) |
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277 | return 236; |
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278 | |||
279 | if (ch == 0x2229) |
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280 | return 239; |
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281 | |||
282 | if (ch == 0x2248) |
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283 | return 247; |
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284 | |||
285 | if (ch == 0x2261) |
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286 | return 240; |
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287 | |||
288 | if (ch == 0x2264) |
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289 | return 243; |
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290 | |||
291 | if (ch == 0x2265) |
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292 | return 242; |
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293 | |||
294 | if (ch == 0x2310) |
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295 | return 169; |
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296 | |||
297 | if ((ch >= 0x2320) && (ch <= 0x2321)) |
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298 | return (ch - 8748); |
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299 | |||
300 | if (ch == 0x2500) |
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301 | return 196; |
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302 | |||
303 | if (ch == 0x2502) |
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304 | return 179; |
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305 | |||
306 | if (ch == 0x250c) |
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307 | return 218; |
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308 | |||
309 | if (ch == 0x2510) |
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310 | return 191; |
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311 | |||
312 | if (ch == 0x2514) |
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313 | return 192; |
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314 | |||
315 | if (ch == 0x2518) |
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316 | return 217; |
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317 | |||
318 | if (ch == 0x251c) |
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319 | return 195; |
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320 | |||
321 | if (ch == 0x2524) |
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322 | return 180; |
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323 | |||
324 | if (ch == 0x252c) |
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325 | return 194; |
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326 | |||
327 | if (ch == 0x2534) |
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328 | return 193; |
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329 | |||
330 | if (ch == 0x253c) |
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331 | return 197; |
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332 | |||
333 | if (ch == 0x2550) |
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334 | return 205; |
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335 | |||
336 | if (ch == 0x2551) |
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337 | return 186; |
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338 | |||
339 | if ((ch >= 0x2552) && (ch <= 0x2553)) |
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340 | return (ch - 9341); |
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341 | |||
342 | if (ch == 0x2554) |
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343 | return 201; |
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344 | |||
345 | if (ch == 0x2555) |
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346 | return 184; |
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347 | |||
348 | if (ch == 0x2556) |
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349 | return 183; |
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350 | |||
351 | if (ch == 0x2557) |
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352 | return 187; |
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353 | |||
354 | if (ch == 0x2558) |
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355 | return 212; |
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356 | |||
357 | if (ch == 0x2559) |
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358 | return 211; |
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359 | |||
360 | if (ch == 0x255a) |
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361 | return 200; |
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362 | |||
363 | if (ch == 0x255b) |
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364 | return 190; |
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365 | |||
366 | if (ch == 0x255c) |
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367 | return 189; |
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368 | |||
369 | if (ch == 0x255d) |
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370 | return 188; |
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371 | |||
372 | if ((ch >= 0x255e) && (ch <= 0x255f)) |
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373 | return (ch - 9368); |
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374 | |||
375 | if (ch == 0x2560) |
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376 | return 204; |
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377 | |||
378 | if ((ch >= 0x2561) && (ch <= 0x2562)) |
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379 | return (ch - 9388); |
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380 | |||
381 | if (ch == 0x2563) |
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382 | return 185; |
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383 | |||
384 | if ((ch >= 0x2564) && (ch <= 0x2565)) |
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385 | return (ch - 9363); |
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386 | |||
387 | if (ch == 0x2566) |
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388 | return 203; |
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389 | |||
390 | if ((ch >= 0x2567) && (ch <= 0x2568)) |
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391 | return (ch - 9368); |
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392 | |||
393 | if (ch == 0x2569) |
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394 | return 202; |
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395 | |||
396 | if (ch == 0x256a) |
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397 | return 216; |
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398 | |||
399 | if (ch == 0x256b) |
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400 | return 215; |
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401 | |||
402 | if (ch == 0x256c) |
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403 | return 206; |
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404 | |||
405 | if (ch == 0x2580) |
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406 | return 223; |
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407 | |||
408 | if (ch == 0x2584) |
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409 | return 220; |
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410 | |||
411 | if (ch == 0x2588) |
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412 | return 219; |
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413 | |||
414 | if (ch == 0x258c) |
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415 | return 221; |
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416 | |||
417 | if (ch == 0x2590) |
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418 | return 222; |
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419 | |||
420 | if ((ch >= 0x2591) && (ch <= 0x2593)) |
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421 | return (ch - 9441); |
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422 | |||
423 | return 256; |
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424 | } |
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425 | |||
1 | jermar | 426 | /* |
427 | * This function takes care of scrolling. |
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428 | */ |
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4320 | decky | 429 | static void ega_check_cursor(bool silent) |
1 | jermar | 430 | { |
3940 | decky | 431 | if (ega_cursor < EGA_SCREEN) |
125 | jermar | 432 | return; |
3994 | decky | 433 | |
3940 | decky | 434 | memmove((void *) backbuf, (void *) (backbuf + EGA_COLS * 2), |
435 | (EGA_SCREEN - EGA_COLS) * 2); |
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3994 | decky | 436 | memsetw(backbuf + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
4320 | decky | 437 | |
438 | if (!silent) { |
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439 | memmove((void *) videoram, (void *) (videoram + EGA_COLS * 2), |
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440 | (EGA_SCREEN - EGA_COLS) * 2); |
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441 | memsetw(videoram + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
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442 | } |
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443 | |||
3940 | decky | 444 | ega_cursor = ega_cursor - EGA_COLS; |
1 | jermar | 445 | } |
446 | |||
4320 | decky | 447 | static void ega_show_cursor(bool silent) |
3975 | decky | 448 | { |
4320 | decky | 449 | if (!silent) { |
450 | pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
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451 | uint8_t stat = pio_read_8(ega_base + EGA_DATA_REG); |
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452 | pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
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453 | pio_write_8(ega_base + EGA_DATA_REG, stat & (~(1 << 5))); |
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454 | } |
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3975 | decky | 455 | } |
456 | |||
4320 | decky | 457 | static void ega_move_cursor(bool silent) |
1 | jermar | 458 | { |
4320 | decky | 459 | if (!silent) { |
460 | pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
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461 | pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
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462 | pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
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463 | pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); |
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464 | } |
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3844 | decky | 465 | } |
466 | |||
4320 | decky | 467 | static void ega_sync_cursor(bool silent) |
3975 | decky | 468 | { |
4320 | decky | 469 | if (!silent) { |
470 | pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
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471 | uint8_t hi = pio_read_8(ega_base + EGA_DATA_REG); |
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472 | pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
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473 | uint8_t lo = pio_read_8(ega_base + EGA_DATA_REG); |
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474 | |||
475 | ega_cursor = (hi << 8) | lo; |
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476 | } else |
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477 | ega_cursor = 0; |
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3975 | decky | 478 | |
3994 | decky | 479 | if (ega_cursor >= EGA_SCREEN) |
480 | ega_cursor = 0; |
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481 | |||
3975 | decky | 482 | if ((ega_cursor % EGA_COLS) != 0) |
483 | ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
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484 | |||
3994 | decky | 485 | memsetw(backbuf + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
486 | |||
4320 | decky | 487 | if (!silent) |
488 | memsetw(videoram + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
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489 | |||
490 | ega_check_cursor(silent); |
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491 | ega_move_cursor(silent); |
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492 | ega_show_cursor(silent); |
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3975 | decky | 493 | } |
494 | |||
4190 | decky | 495 | static void ega_display_char(wchar_t ch, bool silent) |
3844 | decky | 496 | { |
4190 | decky | 497 | uint16_t index = ega_oem_glyph(ch); |
498 | uint8_t glyph; |
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499 | uint8_t style; |
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3844 | decky | 500 | |
4190 | decky | 501 | if ((index >> 8)) { |
4223 | decky | 502 | glyph = U_SPECIAL; |
4190 | decky | 503 | style = INVAL; |
504 | } else { |
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505 | glyph = index & 0xff; |
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506 | style = STYLE; |
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507 | } |
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508 | |||
509 | backbuf[ega_cursor * 2] = glyph; |
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510 | backbuf[ega_cursor * 2 + 1] = style; |
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511 | |||
4093 | decky | 512 | if (!silent) { |
4190 | decky | 513 | videoram[ega_cursor * 2] = glyph; |
514 | videoram[ega_cursor * 2 + 1] = style; |
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4093 | decky | 515 | } |
3844 | decky | 516 | } |
517 | |||
4177 | decky | 518 | static void ega_putchar(outdev_t *dev __attribute__((unused)), wchar_t ch, bool silent) |
3844 | decky | 519 | { |
413 | jermar | 520 | ipl_t ipl; |
3844 | decky | 521 | |
413 | jermar | 522 | ipl = interrupts_disable(); |
1 | jermar | 523 | spinlock_lock(&egalock); |
3844 | decky | 524 | |
1 | jermar | 525 | switch (ch) { |
2065 | jermar | 526 | case '\n': |
3940 | decky | 527 | ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
2065 | jermar | 528 | break; |
529 | case '\t': |
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530 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
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4190 | decky | 531 | break; |
2065 | jermar | 532 | case '\b': |
3940 | decky | 533 | if (ega_cursor % EGA_COLS) |
2065 | jermar | 534 | ega_cursor--; |
535 | break; |
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536 | default: |
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3844 | decky | 537 | ega_display_char(ch, silent); |
2065 | jermar | 538 | ega_cursor++; |
539 | break; |
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1473 | decky | 540 | } |
4320 | decky | 541 | ega_check_cursor(silent); |
542 | ega_move_cursor(silent); |
||
3844 | decky | 543 | |
1 | jermar | 544 | spinlock_unlock(&egalock); |
413 | jermar | 545 | interrupts_restore(ipl); |
1 | jermar | 546 | } |
547 | |||
4093 | decky | 548 | static outdev_t ega_console; |
549 | static outdev_operations_t ega_ops = { |
||
3844 | decky | 550 | .write = ega_putchar |
551 | }; |
||
552 | |||
3930 | jermar | 553 | void ega_init(ioport8_t *base, uintptr_t videoram_phys) |
1 | jermar | 554 | { |
3940 | decky | 555 | /* Initialize the software structure. */ |
3844 | decky | 556 | ega_base = base; |
557 | |||
3940 | decky | 558 | backbuf = (uint8_t *) malloc(EGA_VRAM_SIZE, 0); |
3844 | decky | 559 | if (!backbuf) |
560 | panic("Unable to allocate backbuffer."); |
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561 | |||
3940 | decky | 562 | videoram = (uint8_t *) hw_map(videoram_phys, EGA_VRAM_SIZE); |
3844 | decky | 563 | |
3975 | decky | 564 | /* Synchronize the back buffer and cursor position. */ |
565 | memcpy(backbuf, videoram, EGA_VRAM_SIZE); |
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4320 | decky | 566 | ega_sync_cursor(silent); |
3844 | decky | 567 | |
4093 | decky | 568 | outdev_initialize("ega", &ega_console, &ega_ops); |
3844 | decky | 569 | stdout = &ega_console; |
570 | |||
571 | sysinfo_set_item_val("fb", NULL, true); |
||
572 | sysinfo_set_item_val("fb.kind", NULL, 2); |
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3940 | decky | 573 | sysinfo_set_item_val("fb.width", NULL, EGA_COLS); |
574 | sysinfo_set_item_val("fb.height", NULL, EGA_ROWS); |
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3844 | decky | 575 | sysinfo_set_item_val("fb.blinking", NULL, true); |
576 | sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
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1 | jermar | 577 | } |
1702 | cejka | 578 | |
3751 | svoboda | 579 | void ega_redraw(void) |
580 | { |
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3940 | decky | 581 | memcpy(videoram, backbuf, EGA_VRAM_SIZE); |
4320 | decky | 582 | ega_move_cursor(silent); |
583 | ega_show_cursor(silent); |
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3751 | svoboda | 584 | } |
585 | |||
1754 | jermar | 586 | /** @} |
1702 | cejka | 587 | */ |