Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the libpayload project. |
| 3 | * |
| 4 | * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de> |
| 5 | * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * This file handles reading keystrokes from serial and the console |
| 33 | * and "cooking" them so that they are correct for curses. |
| 34 | * Also, implement key related functions (mainly wgetch) |
| 35 | * |
| 36 | * TODO: |
| 37 | * Actually cook the serial (handle special keys) |
| 38 | */ |
| 39 | |
| 40 | #include "local.h" |
| 41 | |
| 42 | /* ============== Serial ==================== */ |
| 43 | |
| 44 | /* FIXME: Cook the serial correctly */ |
| 45 | |
| 46 | static int cook_serial(unsigned char ch) |
| 47 | { |
| 48 | return (int) ch; |
| 49 | } |
| 50 | |
| 51 | /* ================ Keyboard ================ */ |
| 52 | |
| 53 | /* Scancode macros */ |
| 54 | |
| 55 | #define DOWN(_c) (0x80 | (_c)) |
| 56 | #define UP(_c) (_c) |
| 57 | |
| 58 | #define ISDOWN(_c) ((_c) & 0x80) |
| 59 | #define ISUP(_c) (!ISDOWN((_c))) |
| 60 | |
| 61 | #define SCANCODE(_c) ((_c) & ~0x80) |
| 62 | |
| 63 | /* Scancode definitions for the modifiers */ |
| 64 | |
| 65 | #define SCANCODE_RSHIFT 0x36 |
| 66 | #define SCANCODE_LSHIFT 0x2a |
| 67 | #define SCANCODE_CAPSLOCK 0x3a |
| 68 | #define SCANCODE_LALT 0x38 |
| 69 | #define SCANCODE_LCTRL 0x1d |
| 70 | |
| 71 | /* Modifier flags */ |
| 72 | |
| 73 | #define SHIFT_MODIFIER 0x1 |
| 74 | #define CAPSLOCK_MODIFIER 0x2 |
| 75 | #define ALT_MODIFIER 0x4 |
| 76 | #define CTRL_MODIFIER 0x8 |
| 77 | |
| 78 | #define CTRL(_c) (_c & 0x1f) |
| 79 | |
| 80 | struct { |
| 81 | int normal; |
| 82 | int shift; |
| 83 | } scancode_map[] = { |
| 84 | { }, |
| 85 | { CTRL('['), CTRL('[')}, |
| 86 | { '1', '!' }, |
| 87 | { '2', '@' }, |
| 88 | { '3', '#' }, |
| 89 | { '4', '$' }, |
| 90 | { '5', '%' }, |
| 91 | { '6', '^' }, |
| 92 | { '7', '&' }, |
| 93 | { '8', '*' }, |
| 94 | { '9', '(' }, |
| 95 | { '0', ')' }, |
| 96 | { '-', '_' }, |
| 97 | { '=', '+' }, |
| 98 | { KEY_BACKSPACE, KEY_BACKSPACE}, |
| 99 | { CTRL('I' ), KEY_BTAB }, /* 0x0F */ |
| 100 | { 'q', 'Q' }, |
| 101 | { 'w', 'W' }, |
| 102 | { 'e', 'E' }, |
| 103 | { 'r', 'R' }, |
| 104 | { 't', 'T' }, |
| 105 | { 'y', 'Y' }, |
| 106 | { 'u', 'U' }, |
| 107 | { 'i', 'I' }, |
| 108 | { 'o', 'O' }, |
| 109 | { 'p', 'P' }, |
| 110 | { '[', '{' }, |
| 111 | { ']', '{' }, |
| 112 | { KEY_ENTER, KEY_ENTER }, |
| 113 | { 0 , 0 }, |
| 114 | { 'a', 'A' }, |
| 115 | { 's', 'S' }, /* 0x1F */ |
| 116 | { 'd', 'D' }, |
| 117 | { 'f', 'F' }, |
| 118 | { 'g', 'G' }, |
| 119 | { 'h', 'H' }, |
| 120 | { 'j', 'J' }, |
| 121 | { 'k', 'K' }, |
| 122 | { 'l', 'L' }, |
| 123 | { ';', ':' }, |
| 124 | { '\'', '\"' }, |
| 125 | { '`', '~', }, |
| 126 | { 0, 0 }, |
| 127 | { '\\', '|' }, |
| 128 | { 'z', 'Z' }, |
| 129 | { 'x', 'X' }, |
| 130 | { 'c', 'C' }, |
| 131 | { 'v', 'V' }, /* 0x2F */ |
| 132 | { 'b', 'B' }, |
| 133 | { 'n', 'N' }, |
| 134 | { 'm', 'M' }, |
| 135 | { ',', '<'}, |
| 136 | { '.', '>' }, |
| 137 | { '/', '?' }, |
| 138 | { 0, 0 }, /* RSHIFT */ |
| 139 | { '*', '*' }, |
| 140 | { 0, 0 }, /* LALT */ |
| 141 | { ' ', ' ' }, /* Space */ |
| 142 | { 0, 0 }, /* Capslock */ |
| 143 | { KEY_F(1), KEY_F(1) }, |
| 144 | { KEY_F(2), KEY_F(2) }, |
| 145 | { KEY_F(3), KEY_F(3) }, |
| 146 | { KEY_F(4), KEY_F(4) }, |
| 147 | { KEY_F(5), KEY_F(5) }, /* 0x3F */ |
| 148 | { KEY_F(6), KEY_F(6) }, |
| 149 | { KEY_F(7), KEY_F(7) }, |
| 150 | { KEY_F(8), KEY_F(8) }, |
| 151 | { KEY_F(9), KEY_F(9) }, |
| 152 | { KEY_F(10), KEY_F(10) }, |
| 153 | { 0, 0 }, /* Numlock */ |
| 154 | { 0, 0 }, /* Scroll lock */ |
| 155 | { KEY_HOME, KEY_HOME }, |
| 156 | { KEY_UP, KEY_UP }, |
| 157 | { KEY_PPAGE, KEY_PPAGE }, |
| 158 | { '-', '-' }, |
| 159 | { KEY_LEFT, KEY_LEFT }, |
| 160 | { 0, 0 }, |
| 161 | { KEY_RIGHT, KEY_RIGHT }, |
| 162 | { '-', '-' }, |
| 163 | { KEY_END, KEY_END }, /* 0x4F */ |
| 164 | { KEY_DOWN, KEY_DOWN }, |
| 165 | { KEY_NPAGE, KEY_NPAGE }, |
| 166 | { KEY_IC, KEY_IC }, |
| 167 | { KEY_DC, KEY_DC }, |
| 168 | { 0, 0 }, /* sysreq */ |
| 169 | { 0, 0 }, |
| 170 | { KEY_F(11), KEY_F(11) }, |
| 171 | { KEY_F(12), KEY_F(12) }, |
| 172 | }; |
| 173 | |
| 174 | static int cook_scancodes(unsigned char code) |
| 175 | { |
| 176 | static int modifiers = 0; |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 177 | int ch = 0, sc, shift; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 178 | |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 179 | switch (code) { |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 180 | case DOWN(SCANCODE_RSHIFT): |
| 181 | case DOWN(SCANCODE_LSHIFT): |
| 182 | modifiers |= SHIFT_MODIFIER; |
| 183 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 184 | case UP(SCANCODE_RSHIFT): |
| 185 | case UP(SCANCODE_LSHIFT): |
| 186 | modifiers &= ~SHIFT_MODIFIER; |
| 187 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 188 | case UP(SCANCODE_CAPSLOCK): |
| 189 | if (modifiers & CAPSLOCK_MODIFIER) |
| 190 | modifiers &= ~CAPSLOCK_MODIFIER; |
| 191 | else |
| 192 | modifiers |= CAPSLOCK_MODIFIER; |
| 193 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 194 | case DOWN(SCANCODE_LALT): |
| 195 | modifiers |= ALT_MODIFIER; |
| 196 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 197 | case UP(SCANCODE_LALT): |
| 198 | modifiers &= ~ALT_MODIFIER; |
| 199 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 200 | case DOWN(SCANCODE_LCTRL): |
| 201 | modifiers |= CTRL_MODIFIER; |
| 202 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 203 | case UP(SCANCODE_LCTRL): |
| 204 | modifiers &= ~CTRL_MODIFIER; |
| 205 | return 0; |
| 206 | } |
| 207 | |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 208 | /* Only process keys on an upstroke. */ |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 209 | if (!ISUP(code)) |
| 210 | return 0; |
| 211 | |
| 212 | sc = SCANCODE(code); |
| 213 | |
| 214 | if (sc == 0 || sc > 0x59) |
| 215 | return ERR; |
| 216 | |
| 217 | shift = (modifiers & SHIFT_MODIFIER) ^ (modifiers & CAPSLOCK_MODIFIER); |
| 218 | |
| 219 | ch = shift ? scancode_map[sc].shift : scancode_map[sc].normal; |
| 220 | |
| 221 | if (modifiers & CTRL_MODIFIER) |
| 222 | ch = (ch >= 0x3F && ch <= 0x5F) ? CTRL(ch) : 0; |
| 223 | |
| 224 | return ch; |
| 225 | } |
| 226 | |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 227 | static int curses_getchar(int delay) |
| 228 | { |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 229 | unsigned char c = 0; |
| 230 | int ret; |
| 231 | |
| 232 | do { |
| 233 | if (curses_flags & F_ENABLE_CONSOLE) |
| 234 | c = inb(0x64); |
| 235 | |
| 236 | if ((c & 1) == 0) { |
| 237 | |
| 238 | if ((curses_flags & F_ENABLE_SERIAL) && |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 239 | serial_havechar()) { |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 240 | c = serial_getchar(); |
| 241 | return cook_serial(c); |
| 242 | } |
| 243 | |
| 244 | if (!delay) |
| 245 | break; |
| 246 | } |
| 247 | |
| 248 | c = inb(0x60); |
| 249 | |
| 250 | ret = cook_scancodes(c); |
| 251 | |
| 252 | if (ret != 0) { |
| 253 | return ret; |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 254 | } |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 255 | |
Uwe Hermann | 6a441bf | 2008-03-20 19:54:59 +0000 | [diff] [blame] | 256 | } while (1); |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 257 | |
| 258 | return ERR; |
| 259 | } |
| 260 | |
| 261 | /* === Public functions === */ |
| 262 | |
| 263 | int wgetch(WINDOW *win) |
| 264 | { |
| 265 | return curses_getchar(win->_delay); |
| 266 | } |
| 267 | |
| 268 | int nodelay(WINDOW *win, NCURSES_BOOL flag) |
| 269 | { |
| 270 | win->_delay = flag ? 0 : -1; |
Uwe Hermann | 14a3feb | 2008-03-20 20:46:44 +0000 | [diff] [blame] | 271 | return 0; |
Jordan Crouse | f6145c3 | 2008-03-19 23:56:58 +0000 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | #ifdef CONFIG_VGA_CONSOLE |
| 275 | void curses_enable_vga(int state) |
| 276 | { |
| 277 | if (state) |
| 278 | curses_flags |= F_ENABLE_CONSOLE; |
| 279 | else |
| 280 | curses_flags &= ~F_ENABLE_CONSOLE; |
| 281 | } |
| 282 | #else |
| 283 | void curses_enable_vga(int state) { } |
| 284 | #endif |
| 285 | |
| 286 | #ifdef CONFIG_SERIAL_CONSOLE |
| 287 | void curses_enable_serial(int state) |
| 288 | { |
| 289 | if (state) |
| 290 | curses_flags |= F_ENABLE_SERIAL; |
| 291 | else |
| 292 | curses_flags &= ~F_ENABLE_SERIAL; |
| 293 | } |
| 294 | #else |
| 295 | void curses_enable_serial(int state) { } |
| 296 | #endif |
| 297 | |