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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4377 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2001-2004 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 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 | |||
| 29 | /** @addtogroup genarch_drivers |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 34 | * @brief EGA driver. |
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| 35 | */ |
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| 36 | |||
| 37 | #include <genarch/drivers/ega/ega.h> |
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| 38 | #include <putchar.h> |
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| 39 | #include <mm/page.h> |
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| 40 | #include <mm/as.h> |
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| 41 | #include <mm/slab.h> |
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| 42 | #include <arch/mm/page.h> |
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| 43 | #include <synch/spinlock.h> |
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| 44 | #include <arch/types.h> |
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| 45 | #include <arch/asm.h> |
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| 46 | #include <memstr.h> |
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| 47 | #include <string.h> |
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| 48 | #include <console/chardev.h> |
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| 49 | #include <console/console.h> |
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| 50 | #include <sysinfo/sysinfo.h> |
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| 51 | #include <ddi/ddi.h> |
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| 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 | |||
| 58 | SPINLOCK_INITIALIZE(egalock); |
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| 59 | static uint32_t ega_cursor; |
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| 60 | static uint8_t *videoram; |
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| 61 | static uint8_t *backbuf; |
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| 62 | static ioport8_t *ega_base; |
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| 63 | |||
| 64 | #define SPACE 0x20 |
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| 65 | #define STYLE 0x1e |
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| 66 | #define INVAL 0x17 |
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| 67 | |||
| 68 | #define EMPTY_CHAR ((STYLE << 8) | SPACE) |
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| 69 | |||
| 70 | static uint16_t ega_oem_glyph(const wchar_t ch) |
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| 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 | |||
| 426 | /* |
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| 427 | * This function takes care of scrolling. |
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| 428 | */ |
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| 429 | static void ega_check_cursor(bool silent) |
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| 430 | { |
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| 431 | if (ega_cursor < EGA_SCREEN) |
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| 432 | return; |
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| 433 | |||
| 434 | memmove((void *) backbuf, (void *) (backbuf + EGA_COLS * 2), |
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| 435 | (EGA_SCREEN - EGA_COLS) * 2); |
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| 436 | memsetw(backbuf + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
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| 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 | |||
| 444 | ega_cursor = ega_cursor - EGA_COLS; |
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| 445 | } |
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| 446 | |||
| 447 | static void ega_show_cursor(bool silent) |
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| 448 | { |
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| 449 | if (!silent) { |
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| 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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| 455 | } |
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| 456 | |||
| 457 | static void ega_move_cursor(bool silent) |
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| 458 | { |
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| 459 | if (!silent) { |
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| 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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| 465 | } |
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| 466 | |||
| 467 | static void ega_sync_cursor(bool silent) |
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| 468 | { |
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| 469 | if (!silent) { |
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| 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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| 478 | |||
| 479 | if (ega_cursor >= EGA_SCREEN) |
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| 480 | ega_cursor = 0; |
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| 481 | |||
| 482 | if ((ega_cursor % EGA_COLS) != 0) |
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| 483 | ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
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| 484 | |||
| 485 | memsetw(backbuf + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
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| 486 | |||
| 487 | if (!silent) |
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| 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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| 493 | } |
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| 494 | |||
| 495 | static void ega_display_char(wchar_t ch, bool silent) |
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| 496 | { |
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| 497 | uint16_t index = ega_oem_glyph(ch); |
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| 498 | uint8_t glyph; |
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| 499 | uint8_t style; |
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| 500 | |||
| 501 | if ((index >> 8)) { |
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| 502 | glyph = U_SPECIAL; |
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| 503 | style = INVAL; |
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| 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 | |||
| 512 | if (!silent) { |
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| 513 | videoram[ega_cursor * 2] = glyph; |
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| 514 | videoram[ega_cursor * 2 + 1] = style; |
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| 515 | } |
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| 516 | } |
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| 517 | |||
| 518 | static void ega_putchar(outdev_t *dev __attribute__((unused)), wchar_t ch, bool silent) |
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| 519 | { |
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| 520 | ipl_t ipl; |
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| 521 | |||
| 522 | ipl = interrupts_disable(); |
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| 523 | spinlock_lock(&egalock); |
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| 524 | |||
| 525 | switch (ch) { |
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| 526 | case '\n': |
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| 527 | ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
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| 528 | break; |
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| 529 | case '\t': |
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| 530 | ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
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| 531 | break; |
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| 532 | case '\b': |
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| 533 | if (ega_cursor % EGA_COLS) |
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| 534 | ega_cursor--; |
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| 535 | break; |
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| 536 | default: |
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| 537 | ega_display_char(ch, silent); |
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| 538 | ega_cursor++; |
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| 539 | break; |
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| 540 | } |
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| 541 | ega_check_cursor(silent); |
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| 542 | ega_move_cursor(silent); |
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| 543 | |||
| 544 | spinlock_unlock(&egalock); |
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| 545 | interrupts_restore(ipl); |
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| 546 | } |
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| 547 | |||
| 548 | static outdev_t ega_console; |
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| 549 | static outdev_operations_t ega_ops = { |
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| 550 | .write = ega_putchar |
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| 551 | }; |
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| 552 | |||
| 553 | void ega_init(ioport8_t *base, uintptr_t videoram_phys) |
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| 554 | { |
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| 555 | /* Initialize the software structure. */ |
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| 556 | ega_base = base; |
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| 557 | |||
| 558 | backbuf = (uint8_t *) malloc(EGA_VRAM_SIZE, 0); |
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| 559 | if (!backbuf) |
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| 560 | panic("Unable to allocate backbuffer."); |
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| 561 | |||
| 562 | videoram = (uint8_t *) hw_map(videoram_phys, EGA_VRAM_SIZE); |
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| 563 | |||
| 564 | /* Synchronize the back buffer and cursor position. */ |
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| 565 | memcpy(backbuf, videoram, EGA_VRAM_SIZE); |
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| 566 | ega_sync_cursor(silent); |
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| 567 | |||
| 568 | outdev_initialize("ega", &ega_console, &ega_ops); |
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| 569 | stdout = &ega_console; |
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| 570 | |||
| 571 | sysinfo_set_item_val("fb", NULL, true); |
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| 572 | sysinfo_set_item_val("fb.kind", NULL, 2); |
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| 573 | sysinfo_set_item_val("fb.width", NULL, EGA_COLS); |
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| 574 | sysinfo_set_item_val("fb.height", NULL, EGA_ROWS); |
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| 575 | sysinfo_set_item_val("fb.blinking", NULL, true); |
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| 576 | sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
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| 577 | } |
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| 578 | |||
| 579 | void ega_redraw(void) |
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| 580 | { |
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| 581 | memcpy(videoram, backbuf, EGA_VRAM_SIZE); |
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| 582 | ega_move_cursor(silent); |
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| 583 | ega_show_cursor(silent); |
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| 584 | } |
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| 585 | |||
| 586 | /** @} |
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| 587 | */ |