board/MAI/AmigaOneG3SE/video.c

   1 /*
   2  * (C) Copyright 2002
   3  * Hyperion Entertainment, Hans-JoergF@hyperion-entertainment.com
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <devices.h>
  26 #include "memio.h"
  27 #include <part.h>
  28
  29 unsigned char *cursor_position;
  30 unsigned int cursor_row;
  31 unsigned int cursor_col;
  32
  33 unsigned char current_attr;
  34
  35 unsigned int video_numrows = 25;
  36 unsigned int video_numcols = 80;
  37 unsigned int video_scrolls = 0;
  38
  39 #define VIDEO_BASE (unsigned char *)0xFD0B8000
  40 #define VIDEO_ROWS video_numrows
  41 #define VIDEO_COLS video_numcols
  42 #define VIDEO_PITCH (2 * video_numcols)
  43 #define VIDEO_SIZE (video_numrows * video_numcols * 2)
  44 #define VIDEO_NAME "vga"
  45
  46 void video_test(void);
  47 void video_putc(char ch);
  48 void video_puts(char *string);
  49 void video_scroll(int rows);
  50 void video_banner(void);
  51 int  video_init(void);
  52 int  video_start(void);
  53 int  video_rows(void);
  54 int  video_cols(void);
  55
  56 char *prompt_string = "=>";
  57
  58 void video_set_color(unsigned char attr)
  59 {
  60     unsigned char *fb = (unsigned char *)VIDEO_BASE;
  61     int i;
  62
  63     current_attr = video_get_attr();
  64
  65     for (i=0; i<VIDEO_SIZE; i+=2)
  66     {
  67         *(fb+i+1) = current_attr;
  68     }
  69 }
  70
  71 unsigned char video_get_attr(void)
  72 {
  73     char *s;
  74     unsigned char attr;
  75
  76     attr = 0x0f;
  77
  78     s = getenv("vga_fg_color");
  79     if (s)
  80     {
  81         attr = atoi(s);
  82     }
  83
  84     s = getenv("vga_bg_color");
  85     if (s)
  86     {
  87         attr |= atoi(s)<<4;
  88     }
  89
  90     return attr;
  91 }
  92
  93 int video_inited = 0;
  94
  95 int drv_video_init(void)
  96 {
  97     int error, devices = 1 ;
  98     device_t vgadev ;
  99     if (video_inited) return 1;
 100     video_inited = 1;
 101     video_init();
 102     memset (&vgadev, 0, sizeof(vgadev));
 103
 104     strcpy(vgadev.name, VIDEO_NAME);
 105     vgadev.flags =  DEV_FLAGS_OUTPUT | DEV_FLAGS_SYSTEM;
 106     vgadev.putc = video_putc;
 107     vgadev.puts = video_puts;
 108     vgadev.getc = NULL;
 109     vgadev.tstc = NULL;
 110     vgadev.start = video_start;
 111
 112     error = device_register (&vgadev);
 113
 114     if (error == 0)
 115     {
 116         char *s = getenv("stdout");
 117         if (s && strcmp(s, VIDEO_NAME)==0)
 118         {
 119             if (overwrite_console()) return 1;
 120             error = console_assign(stdout, VIDEO_NAME);
 121             if (error == 0) return 1;
 122             else return error;
 123         }
 124         return 1;
 125     }
 126
 127     return error;
 128 }
 129
 130 int video_init(void)
 131 {
 132     cursor_position = VIDEO_BASE; /* Color text display base */
 133     cursor_row = 0;
 134     cursor_col = 0;
 135     current_attr = video_get_attr(); /* Currently selected value for attribute. */
 136 /*    video_test(); */
 137     video_set_color(current_attr);
 138
 139     return 0;
 140 }
 141
 142 void video_set_cursor(int line, int column)
 143 {
 144     unsigned short offset = line*video_numcols + column;
 145     cursor_position = VIDEO_BASE +  line*VIDEO_PITCH + column*2;
 146     out_byte(0x3D4, 0x0E);
 147     out_byte(0x3D5, offset/256);
 148     out_byte(0x3D4, 0x0F);
 149     out_byte(0x3D5, offset%256);
 150 }
 151
 152 void video_write_char(int character)
 153 {
 154     *cursor_position = character;
 155     *(cursor_position+1) = current_attr;
 156 }
 157
 158 void video_test(void)
 159 {
 160
 161 }
 162
 163 void video_putc(char ch)
 164 {
 165     switch(ch)
 166     {
 167     case '\n':
 168         cursor_col = 0;
 169         cursor_row += 1;
 170         break;
 171     case '\r':
 172         cursor_col = 0;
 173         break;
 174     case '\b':
 175         if (cursor_col) cursor_col--;
 176         else return;
 177         break;
 178     case '\t':
 179         cursor_col = (cursor_col/8+1)*8;
 180         break;
 181     default:
 182         video_write_char(ch);
 183         cursor_col++;
 184         if (cursor_col > VIDEO_COLS-1)
 185         {
 186             cursor_row++;
 187             cursor_col=0;
 188         }
 189     }
 190
 191     if (cursor_row > VIDEO_ROWS-1)
 192         video_scroll(1);
 193     video_set_cursor(cursor_row, cursor_col);
 194 }
 195
 196 void video_scroll(int rows)
 197 {
 198     unsigned short clear = ((unsigned short)current_attr) | (' '<<8);
 199     unsigned short* addr16 = &((unsigned short *)VIDEO_BASE)[(VIDEO_ROWS-rows)*VIDEO_COLS];
 200     int i;
 201     char *s;
 202
 203     s = getenv("vga_askscroll");
 204     video_scrolls += rows;
 205
 206     if (video_scrolls >= video_numrows)
 207     {
 208         if (s && strcmp(s, "yes"))
 209         {
 210             while (-1 == tstc());
 211         }
 212
 213         video_scrolls = 0;
 214     }
 215
 216
 217     memcpy(VIDEO_BASE, VIDEO_BASE+rows*(VIDEO_COLS*2), (VIDEO_ROWS-rows)*(VIDEO_COLS*2));
 218     for (i = 0 ; i < rows * VIDEO_COLS ; i++)
 219         addr16[i] = clear;
 220     cursor_row-=rows;
 221     cursor_col=0;
 222 }
 223
 224 void video_puts(char *string)
 225 {
 226     while (*string)
 227     {
 228         video_putc(*string);
 229         string++;
 230     }
 231 }
 232
 233 int video_start(void)
 234 {
 235     return 0;
 236 }
 237
 238 unsigned char video_single_box[] =
 239 {
 240     218, 196, 191,
 241     179,      179,
 242     192, 196, 217
 243 };
 244
 245 unsigned char video_double_box[] =
 246 {
 247     201, 205, 187,
 248     186,      186,
 249     200, 205, 188
 250 };
 251
 252 unsigned char video_single_title[] =
 253 {
 254     195, 196, 180, 180, 195
 255 };
 256
 257 unsigned char video_double_title[] =
 258 {
 259     204, 205, 185, 181, 198
 260 };
 261
 262 #define SINGLE_BOX 0
 263 #define DOUBLE_BOX 1
 264
 265 unsigned char *video_addr(int x, int y)
 266 {
 267     return VIDEO_BASE + 2*(VIDEO_COLS*y) + 2*x;
 268 }
 269
 270 void video_bios_print_string(char *s, int x, int y, int attr, int count)
 271 {
 272     int cattr = current_attr;
 273     if (attr != -1) current_attr = attr;
 274     video_set_cursor(x,y);
 275     while (count)
 276     {
 277         char c = *s++;
 278         if (attr == -1) current_attr = *s++;
 279         video_putc(c);
 280         count--;
 281     }
 282 }
 283
 284 void video_draw_box(int style, int attr, char *title, int separate, int x, int y, int w, int h)
 285 {
 286     unsigned char *fb, *fb2;
 287     unsigned char *st = (style == SINGLE_BOX)?video_single_box : video_double_box;
 288     unsigned char *ti = (style == SINGLE_BOX)?video_single_title : video_double_title;
 289     int i;
 290
 291     fb = video_addr(x,y);
 292     *(fb) = st[0];
 293     *(fb+1) = attr;
 294     fb += 2;
 295
 296     fb2 = video_addr(x,y+h-1);
 297     *(fb2) = st[5];
 298     *(fb2+1) = attr;
 299     fb2 += 2;
 300
 301     for (i=0; i<w-2;i++)
 302     {
 303         *fb = st[1];
 304         fb++;
 305         *fb = attr;
 306         fb++;
 307
 308         *fb2 = st[6];
 309         fb2++;
 310         *fb2 = attr;
 311         fb2++;
 312
 313     }
 314     *fb = st[2];
 315     *(fb+1) = attr;
 316
 317     *fb2 = st[7];
 318     *(fb2+1) = attr;
 319
 320     fb  = video_addr(x, y+1);
 321     fb2 = video_addr(x+w-1, y+1);
 322     for (i=0; i<h-2; i++)
 323     {
 324         *fb = st[3];
 325         *(fb+1) = attr; fb += 2*VIDEO_COLS;
 326
 327         *fb2 = st[4];
 328         *(fb2+1) = attr; fb2 += 2*VIDEO_COLS;
 329     }
 330
 331     /* Draw title */
 332     if (title)
 333     {
 334         if (separate == 0)
 335         {
 336             fb = video_addr(x+1, y);
 337             *fb = ti[3];
 338             fb += 2;
 339             *fb = ' ';
 340             fb += 2;
 341             while (*title)
 342             {
 343                 *fb = *title;
 344                 fb ++;
 345                 *fb = attr;
 346                 fb++; title++;
 347             }
 348             *fb = ' ';
 349             fb += 2;
 350             *fb = ti[4];
 351         }
 352         else
 353         {
 354             fb = video_addr(x, y+2);
 355             *fb = ti[0];
 356             fb += 2;
 357             for (i=0; i<w-2; i++)
 358             {
 359                 *fb = ti[1];
 360                 *(fb+1) = attr;
 361                 fb += 2;
 362             }
 363             *fb = ti[2];
 364             *(fb+1) = attr;
 365             fb = video_addr(x+1, y+1);
 366             for (i=0; i<w-2; i++)
 367             {
 368                 *fb = ' ';
 369                 *(fb+1) = attr;
 370                 fb += 2;
 371             }
 372             fb = video_addr(x+2, y+1);
 373
 374             while (*title)
 375             {
 376                 *fb = *title;
 377                 *(fb+1) = attr;
 378                 fb += 2;
 379                 title++;
 380             }
 381         }
 382     }
 383
 384 }
 385
 386 void video_draw_text(int x, int y, int attr, char *text)
 387 {
 388     unsigned char *fb = video_addr(x,y);
 389     while (*text)
 390     {
 391         *fb++ = *text++;
 392         *fb++ = attr;
 393     }
 394 }
 395
 396 void video_save_rect(int x, int y, int w, int h, void *save_area, int clearchar, int clearattr)
 397 {
 398     unsigned char *save = (unsigned char *)save_area;
 399     unsigned char *fb = video_addr(x,y);
 400     int i,j;
 401     for (i=0; i<h; i++)
 402     {
 403         unsigned char *fbb = fb;
 404         for (j=0; j<w; j++)
 405         {
 406             *save ++ = *fb;
 407             if (clearchar > 0) *fb = clearchar;
 408             fb ++;
 409             *save ++ = *fb;
 410             if (clearattr > 0) *fb = clearattr;
 411         }
 412         fb = fbb + 2*VIDEO_COLS;
 413     }
 414 }
 415
 416 void video_restore_rect(int x, int y, int w, int h, void *save_area)
 417 {
 418     unsigned char *save = (unsigned char *)save_area;
 419     unsigned char *fb = video_addr(x,y);
 420     int i,j;
 421     for (i=0; i<h; i++)
 422     {
 423         unsigned char *fbb = fb;
 424         for (j=0; j<w; j++)
 425         {
 426             *fb ++ = *save ++;
 427             *fb ++ = *save ++;
 428         }
 429         fb = fbb + 2*VIDEO_COLS;
 430     }
 431
 432 }
 433
 434 int video_rows(void)
 435 {
 436     return VIDEO_ROWS;
 437 }
 438
 439 int video_cols(void)
 440 {
 441     return VIDEO_COLS;
 442 }
 443
 444 void video_size(int cols, int rows)
 445 {
 446     video_numrows = rows;
 447     video_numcols = cols;
 448 }
 449
 450 void video_clear(void)
 451 {
 452     unsigned short *fbb = (unsigned short *)0xFD0B8000;
 453     int i,j;
 454     unsigned short val = 0x2000 | current_attr;
 455
 456     for (i=0; i<video_rows(); i++)
 457     {
 458         for (j=0; j<video_cols(); j++)
 459         {
 460             *fbb++ = val;
 461         }
 462     }
 463     video_set_cursor(0,0);
 464     cursor_row = 0;
 465     cursor_col = 0;
 466 }
 467
 468 #ifdef EASTEREGG
 469 int video_easteregg_active = 0;
 470
 471 void video_easteregg(void)
 472 {
 473     video_easteregg_active = 1;
 474 }
 475 #endif
 476
 477 extern block_dev_desc_t * ide_get_dev(int dev);
 478 extern char version_string[];
 479
 480 void video_banner(void)
 481 {
 482     block_dev_desc_t *ide;
 483     DECLARE_GLOBAL_DATA_PTR;
 484     int i;
 485     char *s;
 486     int maxdev;
 487
 488
 489     if (video_inited == 0) return;
 490 #ifdef EASTEREGG
 491     if (video_easteregg_active)
 492     {
 493         prompt_string="";
 494         video_clear();
 495         printf("\n");
 496         printf("    **** COMMODORE 64 BASIC X2 ****\n\n");
 497         printf(" 64K RAM SYSTEM  38911 BASIC BYTES FREE\n\n");
 498         printf("READY\n");
 499     }
 500     else
 501     {
 502 #endif
 503         s = getenv("ide_maxbus");
 504         if (s)
 505             maxdev = atoi(s) * 2;
 506         else
 507             maxdev = 4;
 508
 509         s = getenv("stdout");
 510         if (s && strcmp(s, "serial") == 0)
 511             return;
 512
 513         video_clear();
 514         printf("%s\n\nCPU: ", version_string);
 515         checkcpu();
 516         printf("DRAM: %ld MB\n", gd->bd->bi_memsize/(1024*1024));
 517         printf("FSB: %ld MHz\n", gd->bd->bi_busfreq/1000000);
 518
 519         printf("\n---- Disk summary ----\n");
 520         for (i = 0; i < maxdev; i++)
 521         {
 522             ide = ide_get_dev(i);
 523             printf("Device %d: ", i);
 524             dev_print(ide);
 525         }
 526
 527 /*
 528     video_draw_box(SINGLE_BOX, 0x0F, "Test 1", 0, 0,18, 72, 4);
 529     video_draw_box(DOUBLE_BOX, 0x0F, "Test 2", 1, 4,10, 50, 6);
 530     video_draw_box(DOUBLE_BOX, 0x0F, "Test 3", 0, 40, 3, 20, 5);
 531
 532     video_draw_text(1, 4, 0x2F, "Highlighted options");
 533     video_draw_text(1, 5, 0x0F, "Non-selected option");
 534     video_draw_text(1, 6, 0x07, "disabled option");
 535 */
 536 #ifdef EASTEREGG
 537     }
 538 #endif
 539 }