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1.1 ! nbrk 1: /*-
! 2: * Copyright (c) 2005-2007, Kohsuke Ohtani
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the author nor the names of any co-contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: /*
! 31: * console.c - GBA console driver
! 32: */
! 33:
! 34: #include <driver.h>
! 35: #include <sys/tty.h>
! 36: #include "lcd.h"
! 37: #include "font.h"
! 38:
! 39: static int console_init(void);
! 40: static int console_read(device_t, char *, size_t *, int);
! 41: static int console_write(device_t, char *, size_t *, int);
! 42: static int console_ioctl(device_t, u_long, void *);
! 43: void console_attach(struct tty **);
! 44:
! 45: /*
! 46: * Driver structure
! 47: */
! 48: struct driver console_drv = {
! 49: /* name */ "GBA Console",
! 50: /* order */ 4,
! 51: /* init */ console_init,
! 52: };
! 53:
! 54: static struct devio console_io = {
! 55: /* open */ NULL,
! 56: /* close */ NULL,
! 57: /* read */ console_read,
! 58: /* write */ console_write,
! 59: /* ioctl */ console_ioctl,
! 60: /* event */ NULL,
! 61: };
! 62:
! 63: static device_t console_dev;
! 64: static struct tty console_tty;
! 65:
! 66: static uint16_t *vram = CONSOLE_MAP;
! 67: static int pos_x;
! 68: static int pos_y;
! 69: static u_short attrib;
! 70:
! 71: static int esc_index;
! 72: static int esc_arg1;
! 73: static int esc_arg2;
! 74: static int esc_argc;
! 75: static int esc_saved_x;
! 76: static int esc_saved_y;
! 77:
! 78: static u_short ansi_colors[] = {0, 4, 2, 6, 1, 5, 3, 7};
! 79:
! 80: static void
! 81: scroll_up(void)
! 82: {
! 83: int i;
! 84:
! 85: for (i = 0; i < VSCR_COLS * (SCR_ROWS - 1); i++)
! 86: vram[i] = vram[i + VSCR_COLS];
! 87: for (i = 0; i < VSCR_COLS; i++)
! 88: vram[VSCR_COLS * (SCR_ROWS - 1) + i] = ' ';
! 89: }
! 90:
! 91: static void
! 92: move_cursor(void)
! 93: {
! 94: }
! 95:
! 96:
! 97: static void
! 98: new_line(void)
! 99: {
! 100:
! 101: pos_x = 0;
! 102: pos_y++;
! 103: if (pos_y >= SCR_ROWS) {
! 104: pos_y = SCR_ROWS - 1;
! 105: scroll_up();
! 106: }
! 107: }
! 108:
! 109: static void
! 110: clear_screen(void)
! 111: {
! 112: int i;
! 113:
! 114: for (i = 0; i < VSCR_COLS * SCR_ROWS; i++)
! 115: vram[i] = ' ';
! 116:
! 117: pos_x = 0;
! 118: pos_y = 0;
! 119: move_cursor();
! 120: }
! 121:
! 122: /*
! 123: * Check for escape code sequence.
! 124: * Return true if escape
! 125: *
! 126: * <Support list>
! 127: * ESC[#;#H or : moves cursor to line #, column #
! 128: * ESC[#;#f
! 129: * ESC[#A : moves cursor up # lines
! 130: * ESC[#B : moves cursor down # lines
! 131: * ESC[#C : moves cursor right # spaces
! 132: * ESC[#D : moves cursor left # spaces
! 133: * ESC[#;#R : reports current cursor line & column
! 134: * ESC[s : save cursor position for recall later
! 135: * ESC[u : return to saved cursor position
! 136: * ESC[2J : clear screen and home cursor
! 137: * ESC[K : clear to end of line
! 138: *
! 139: * <Not support>
! 140: * ESC[#m : attribute (0=attribure off, 4=underline, 5=blink)
! 141: */
! 142: static int
! 143: check_escape(char c)
! 144: {
! 145: int move = 0;
! 146: int val;
! 147: u_short color;
! 148:
! 149: if (c == 033) {
! 150: esc_index = 1;
! 151: esc_argc = 0;
! 152: return 1;
! 153: }
! 154: if (esc_index == 0)
! 155: return 0;
! 156:
! 157: if (c >= '0' && c <= '9') {
! 158: val = c - '0';
! 159: switch (esc_argc) {
! 160: case 0:
! 161: esc_arg1 = val;
! 162: esc_index++;
! 163: break;
! 164: case 1:
! 165: esc_arg1 = esc_arg1 * 10 + val;
! 166: break;
! 167: case 2:
! 168: esc_arg2 = val;
! 169: esc_index++;
! 170: break;
! 171: case 3:
! 172: esc_arg2 = esc_arg2 * 10 + val;
! 173: break;
! 174: default:
! 175: goto reset;
! 176: }
! 177: esc_argc++;
! 178: return 1;
! 179: }
! 180:
! 181: esc_index++;
! 182:
! 183: switch (esc_index) {
! 184: case 2:
! 185: if (c != '[')
! 186: goto reset;
! 187: return 1;
! 188: case 3:
! 189: switch (c) {
! 190: case 's': /* Save cursor position */
! 191: esc_saved_x = pos_x;
! 192: esc_saved_y = pos_y;
! 193: break;
! 194: case 'u': /* Return to saved cursor position */
! 195: pos_x = esc_saved_x;
! 196: pos_y = esc_saved_y;
! 197: move_cursor();
! 198: break;
! 199: case 'K': /* Clear to end of line */
! 200: break;
! 201: }
! 202: goto reset;
! 203: case 4:
! 204: switch (c) {
! 205: case 'A': /* Move cursor up # lines */
! 206: pos_y -= esc_arg1;
! 207: if (pos_y < 0)
! 208: pos_y = 0;
! 209: move = 1;
! 210: break;
! 211: case 'B': /* Move cursor down # lines */
! 212: pos_y += esc_arg1;
! 213: if (pos_y >= SCR_ROWS)
! 214: pos_y = SCR_ROWS - 1;
! 215: move = 1;
! 216: break;
! 217: case 'C': /* Move cursor forward # spaces */
! 218: pos_x += esc_arg1;
! 219: if (pos_x >= SCR_COLS)
! 220: pos_x = SCR_COLS - 1;
! 221: move = 1;
! 222: break;
! 223: case 'D': /* Move cursor back # spaces */
! 224: pos_x -= esc_arg1;
! 225: if (pos_x < 0)
! 226: pos_x = 0;
! 227: move = 1;
! 228: break;
! 229: case ';':
! 230: if (esc_argc == 1)
! 231: esc_argc = 2;
! 232: return 1;
! 233: case 'J':
! 234: if (esc_arg1 == 2) /* Clear screen */
! 235: clear_screen();
! 236: break;
! 237: case 'm': /* Change attribute */
! 238: switch (esc_arg1) {
! 239: case 0: /* reset */
! 240: attrib = 0x0F;
! 241: break;
! 242: case 1: /* bold */
! 243: attrib = 0x0F;
! 244: break;
! 245: case 4: /* under line */
! 246: break;
! 247: case 5: /* blink */
! 248: attrib |= 0x80;
! 249: break;
! 250: case 30: case 31: case 32: case 33:
! 251: case 34: case 35: case 36: case 37:
! 252: color = ansi_colors[esc_arg1 - 30];
! 253: attrib = (attrib & 0xf0) | color;
! 254: break;
! 255: case 40: case 41: case 42: case 43:
! 256: case 44: case 45: case 46: case 47:
! 257: color = ansi_colors[esc_arg1 - 40];
! 258: attrib = (attrib & 0x0f) | (color << 4);
! 259: break;
! 260: }
! 261: break;
! 262:
! 263: }
! 264: if (move)
! 265: move_cursor();
! 266: goto reset;
! 267: case 6:
! 268: switch (c) {
! 269: case 'H':
! 270: case 'f':
! 271: pos_y = esc_arg1;
! 272: pos_x = esc_arg2;
! 273: if (pos_y >= SCR_ROWS)
! 274: pos_y = SCR_ROWS - 1;
! 275: if (pos_x >= SCR_COLS)
! 276: pos_x = SCR_COLS - 1;
! 277: move_cursor();
! 278: break;
! 279: case 'R':
! 280: /* XXX */
! 281: break;
! 282: }
! 283: goto reset;
! 284: default:
! 285: goto reset;
! 286: }
! 287: return 1;
! 288: reset:
! 289: esc_index = 0;
! 290: esc_argc = 0;
! 291: return 1;
! 292: }
! 293:
! 294: static void
! 295: put_char(char c)
! 296: {
! 297:
! 298: if (check_escape(c))
! 299: return;
! 300:
! 301: switch (c) {
! 302: case '\n':
! 303: new_line();
! 304: return;
! 305: case '\r':
! 306: pos_x = 0;
! 307: return;
! 308: case '\b':
! 309: if (pos_x == 0)
! 310: return;
! 311: pos_x--;
! 312: return;
! 313: }
! 314:
! 315: vram[pos_y * VSCR_COLS + pos_x] = c;
! 316: pos_x++;
! 317: if (pos_x >= SCR_COLS) {
! 318: pos_x = 0;
! 319: pos_y++;
! 320: if (pos_y >= SCR_ROWS) {
! 321: pos_y = SCR_ROWS - 1;
! 322: scroll_up();
! 323: }
! 324: }
! 325: }
! 326:
! 327: static void
! 328: console_output(struct tty *tp)
! 329: {
! 330: int c;
! 331:
! 332: sched_lock();
! 333: while ((c = ttyq_getc(&tp->t_outq)) >= 0)
! 334: put_char(c);
! 335: move_cursor();
! 336: esc_index = 0;
! 337: sched_unlock();
! 338: }
! 339:
! 340: #if defined(DEBUG) && defined(CONFIG_DIAG_SCREEN)
! 341: /*
! 342: * Debug print handler
! 343: */
! 344: static void
! 345: diag_print(char *str)
! 346: {
! 347: size_t count;
! 348: char c;
! 349:
! 350: sched_lock();
! 351: for (count = 0; count < 128; count++) {
! 352: c = *str;
! 353: if (c == '\0')
! 354: break;
! 355: put_char(c);
! 356: str++;
! 357: }
! 358: move_cursor();
! 359: esc_index = 0;
! 360: sched_unlock();
! 361: }
! 362: #endif
! 363:
! 364: /*
! 365: * Read
! 366: */
! 367: static int
! 368: console_read(device_t dev, char *buf, size_t *nbyte, int blkno)
! 369: {
! 370:
! 371: return tty_read(&console_tty, buf, nbyte);
! 372: }
! 373:
! 374: /*
! 375: * Write
! 376: */
! 377: static int
! 378: console_write(device_t dev, char *buf, size_t *nbyte, int blkno)
! 379: {
! 380:
! 381: return tty_write(&console_tty, buf, nbyte);
! 382: }
! 383:
! 384: /*
! 385: * I/O control
! 386: */
! 387: static int
! 388: console_ioctl(device_t dev, u_long cmd, void *arg)
! 389: {
! 390:
! 391: return tty_ioctl(&console_tty, cmd, arg);
! 392: }
! 393:
! 394: /*
! 395: * Attach input device.
! 396: */
! 397: void
! 398: console_attach(struct tty **tpp)
! 399: {
! 400:
! 401: *tpp = &console_tty;
! 402: }
! 403:
! 404: /*
! 405: * Init font
! 406: */
! 407: static void
! 408: init_font(void)
! 409: {
! 410: int i, row, col, bit, val = 0;
! 411: uint16_t *tile = CONSOLE_TILE;
! 412:
! 413: for (i = 0; i < 128; i++) {
! 414: for (row = 0; row < 8; row++) {
! 415: for (col = 7; col >= 0; col--) {
! 416: bit = (font_bitmap[i][row] & (1 << col)) ? 2 : 1;
! 417: if (col % 2)
! 418: val = bit;
! 419: else
! 420: tile[(i * 32) + (row * 4) + ((7 - col) / 2)] =
! 421: val + (bit << 8);
! 422: }
! 423: }
! 424: }
! 425: }
! 426:
! 427: /*
! 428: * Init screen
! 429: */
! 430: static void
! 431: init_screen(void)
! 432: {
! 433: uint16_t *pal = BG_PALETTE;
! 434:
! 435: /* Initialize palette */
! 436: pal[0] = 0; /* Transparent */
! 437: pal[1] = RGB(0,0,0); /* Black */
! 438: pal[2] = RGB(31,31,31); /* White */
! 439:
! 440: /* Setup video */
! 441: REG_BG3CNT = 0x1080; /* Size0, 256color, priority0 */
! 442: REG_DISPCNT = 0x0800; /* Mode0, BG3 */
! 443: }
! 444:
! 445: /*
! 446: * Init
! 447: */
! 448: static int
! 449: console_init(void)
! 450: {
! 451:
! 452: esc_index = 0;
! 453: pos_x = 0;
! 454: pos_y = 19;
! 455: console_dev = device_create(&console_io, "console", DF_CHR);
! 456: init_font();
! 457: init_screen();
! 458: #if defined(DEBUG) && defined(CONFIG_DIAG_SCREEN)
! 459: debug_attach(diag_print);
! 460: #endif
! 461: tty_register(&console_io, &console_tty, console_output);
! 462: console_tty.t_winsize.ws_row = SCR_ROWS;
! 463: console_tty.t_winsize.ws_col = SCR_COLS;
! 464: return 0;
! 465: }