common/lcd.c

   1 /*
   2  * Common LCD routines for supported CPUs
   3  *
   4  * (C) Copyright 2001-2002
   5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 /************************************************************************/
  27 /* ** HEADER FILES                                                      */
  28 /************************************************************************/
  29
  30 /* #define DEBUG */
  31
  32 #include <config.h>
  33 #include <common.h>
  34 #include <command.h>
  35 #include <stdarg.h>
  36 #include <linux/types.h>
  37 #include <stdio_dev.h>
  38 #if defined(CONFIG_POST)
  39 #include <post.h>
  40 #endif
  41 #include <lcd.h>
  42 #include <watchdog.h>
  43
  44 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  45         defined(CONFIG_CPU_MONAHANS)
  46 #define CONFIG_CPU_PXA
  47 #include <asm/byteorder.h>
  48 #endif
  49
  50 #if defined(CONFIG_MPC823)
  51 #include <lcdvideo.h>
  52 #endif
  53
  54 #if defined(CONFIG_ATMEL_LCD)
  55 #include <atmel_lcdc.h>
  56 #endif
  57
  58 /************************************************************************/
  59 /* ** FONT DATA                                                         */
  60 /************************************************************************/
  61 #include <video_font.h>         /* Get font data, width and height      */
  62 #include <video_font_data.h>
  63
  64 /************************************************************************/
  65 /* ** LOGO DATA                                                         */
  66 /************************************************************************/
  67 #ifdef CONFIG_LCD_LOGO
  68 # include <bmp_logo.h>          /* Get logo data, width and height      */
  69 # include <bmp_logo_data.h>
  70 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  71 #  error Default Color Map overlaps with Logo Color Map
  72 # endif
  73 #endif
  74
  75 #ifndef CONFIG_LCD_ALIGNMENT
  76 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  77 #endif
  78
  79 /* By default we scroll by a single line */
  80 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  81 #define CONFIG_CONSOLE_SCROLL_LINES 1
  82 #endif
  83
  84 DECLARE_GLOBAL_DATA_PTR;
  85
  86 ulong lcd_setmem (ulong addr);
  87
  88 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
  89 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
  90 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
  91
  92 static int lcd_init(void *lcdbase);
  93
  94 static void *lcd_logo (void);
  95
  96 static int lcd_getbgcolor(void);
  97 static void lcd_setfgcolor(int color);
  98 static void lcd_setbgcolor(int color);
  99
 100 char lcd_is_enabled = 0;
 101
 102 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 103
 104
 105 #ifdef  NOT_USED_SO_FAR
 106 static void lcd_getcolreg(ushort regno,
 107                                 ushort *red, ushort *green, ushort *blue);
 108 static int lcd_getfgcolor(void);
 109 #endif  /* NOT_USED_SO_FAR */
 110
 111 /************************************************************************/
 112
 113 /* Flush LCD activity to the caches */
 114 void lcd_sync(void)
 115 {
 116         /*
 117          * flush_dcache_range() is declared in common.h but it seems that some
 118          * architectures do not actually implement it. Is there a way to find
 119          * out whether it exists? For now, ARM is safe.
 120          */
 121 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 122         int line_length;
 123
 124         if (lcd_flush_dcache)
 125                 flush_dcache_range((u32)lcd_base,
 126                         (u32)(lcd_base + lcd_get_size(&line_length)));
 127 #endif
 128 }
 129
 130 void lcd_set_flush_dcache(int flush)
 131 {
 132         lcd_flush_dcache = (flush != 0);
 133 }
 134
 135 /*----------------------------------------------------------------------*/
 136
 137 static void console_scrollup(void)
 138 {
 139         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 140
 141         /* Copy up rows ignoring those that will be overwritten */
 142         memcpy(CONSOLE_ROW_FIRST,
 143                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 144                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 145
 146         /* Clear the last rows */
 147         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 148                 COLOR_MASK(lcd_color_bg),
 149                CONSOLE_ROW_SIZE * rows);
 150
 151         lcd_sync();
 152         console_row -= rows;
 153 }
 154
 155 /*----------------------------------------------------------------------*/
 156
 157 static inline void console_back(void)
 158 {
 159         if (--console_col < 0) {
 160                 console_col = CONSOLE_COLS-1 ;
 161                 if (--console_row < 0) {
 162                         console_row = 0;
 163                 }
 164         }
 165
 166         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 167                 console_row * VIDEO_FONT_HEIGHT, ' ');
 168 }
 169
 170 /*----------------------------------------------------------------------*/
 171
 172 static inline void console_newline(void)
 173 {
 174         ++console_row;
 175         console_col = 0;
 176
 177         /* Check if we need to scroll the terminal */
 178         if (console_row >= CONSOLE_ROWS) {
 179                 /* Scroll everything up */
 180                 console_scrollup();
 181         } else {
 182                 lcd_sync();
 183         }
 184 }
 185
 186 /*----------------------------------------------------------------------*/
 187
 188 void lcd_putc(const char c)
 189 {
 190         if (!lcd_is_enabled) {
 191                 serial_putc(c);
 192
 193                 return;
 194         }
 195
 196         switch (c) {
 197         case '\r':
 198                 console_col = 0;
 199
 200                 return;
 201         case '\n':
 202                 console_newline();
 203
 204                 return;
 205         case '\t':      /* Tab (8 chars alignment) */
 206                 console_col +=  8;
 207                 console_col &= ~7;
 208
 209                 if (console_col >= CONSOLE_COLS)
 210                         console_newline();
 211
 212                 return;
 213         case '\b':
 214                 console_back();
 215
 216                 return;
 217         default:
 218                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 219                         console_row * VIDEO_FONT_HEIGHT, c);
 220                 if (++console_col >= CONSOLE_COLS)
 221                         console_newline();
 222         }
 223 }
 224
 225 /*----------------------------------------------------------------------*/
 226
 227 void lcd_puts(const char *s)
 228 {
 229         if (!lcd_is_enabled) {
 230                 serial_puts(s);
 231
 232                 return;
 233         }
 234
 235         while (*s) {
 236                 lcd_putc(*s++);
 237         }
 238         lcd_sync();
 239 }
 240
 241 /*----------------------------------------------------------------------*/
 242
 243 void lcd_printf(const char *fmt, ...)
 244 {
 245         va_list args;
 246         char buf[CONFIG_SYS_PBSIZE];
 247
 248         va_start(args, fmt);
 249         vsprintf(buf, fmt, args);
 250         va_end(args);
 251
 252         lcd_puts(buf);
 253 }
 254
 255 /************************************************************************/
 256 /* ** Low-Level Graphics Routines                                       */
 257 /************************************************************************/
 258
 259 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 260 {
 261         uchar *dest;
 262         ushort row;
 263
 264 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 265         y += BMP_LOGO_HEIGHT;
 266 #endif
 267
 268 #if LCD_BPP == LCD_MONOCHROME
 269         ushort off  = x * (1 << LCD_BPP) % 8;
 270 #endif
 271
 272         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 273
 274         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 275                 uchar *s = str;
 276                 int i;
 277 #if LCD_BPP == LCD_COLOR16
 278                 ushort *d = (ushort *)dest;
 279 #else
 280                 uchar *d = dest;
 281 #endif
 282
 283 #if LCD_BPP == LCD_MONOCHROME
 284                 uchar rest = *d & -(1 << (8-off));
 285                 uchar sym;
 286 #endif
 287                 for (i = 0; i < count; ++i) {
 288                         uchar c, bits;
 289
 290                         c = *s++;
 291                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 292
 293 #if LCD_BPP == LCD_MONOCHROME
 294                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 295                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 296
 297                         *d++ = rest | (sym >> off);
 298                         rest = sym << (8-off);
 299 #elif LCD_BPP == LCD_COLOR8
 300                         for (c = 0; c < 8; ++c) {
 301                                 *d++ = (bits & 0x80) ?
 302                                                 lcd_color_fg : lcd_color_bg;
 303                                 bits <<= 1;
 304                         }
 305 #elif LCD_BPP == LCD_COLOR16
 306                         for (c = 0; c < 8; ++c) {
 307                                 *d++ = (bits & 0x80) ?
 308                                                 lcd_color_fg : lcd_color_bg;
 309                                 bits <<= 1;
 310                         }
 311 #endif
 312                 }
 313 #if LCD_BPP == LCD_MONOCHROME
 314                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 315 #endif
 316         }
 317 }
 318
 319 /*----------------------------------------------------------------------*/
 320
 321 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 322 {
 323         lcd_drawchars(x, y, s, strlen((char *)s));
 324 }
 325
 326 /*----------------------------------------------------------------------*/
 327
 328 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 329 {
 330         lcd_drawchars(x, y, &c, 1);
 331 }
 332
 333 /************************************************************************/
 334 /**  Small utility to check that you got the colours right              */
 335 /************************************************************************/
 336 #ifdef LCD_TEST_PATTERN
 337
 338 #define N_BLK_VERT      2
 339 #define N_BLK_HOR       3
 340
 341 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 342         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 343         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 344 };
 345
 346 static void test_pattern(void)
 347 {
 348         ushort v_max  = panel_info.vl_row;
 349         ushort h_max  = panel_info.vl_col;
 350         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 351         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 352         ushort v, h;
 353         uchar *pix = (uchar *)lcd_base;
 354
 355         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 356                 h_max, v_max, h_step, v_step);
 357
 358         /* WARNING: Code silently assumes 8bit/pixel */
 359         for (v = 0; v < v_max; ++v) {
 360                 uchar iy = v / v_step;
 361                 for (h = 0; h < h_max; ++h) {
 362                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 363                         *pix++ = test_colors[ix];
 364                 }
 365         }
 366 }
 367 #endif /* LCD_TEST_PATTERN */
 368
 369
 370 /************************************************************************/
 371 /* ** GENERIC Initialization Routines                                   */
 372 /************************************************************************/
 373
 374 int lcd_get_size(int *line_length)
 375 {
 376         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 377         return *line_length * panel_info.vl_row;
 378 }
 379
 380 int drv_lcd_init (void)
 381 {
 382         struct stdio_dev lcddev;
 383         int rc;
 384
 385         lcd_base = (void *)(gd->fb_base);
 386
 387         lcd_get_size(&lcd_line_length);
 388
 389         lcd_init(lcd_base);             /* LCD initialization */
 390
 391         /* Device initialization */
 392         memset(&lcddev, 0, sizeof(lcddev));
 393
 394         strcpy(lcddev.name, "lcd");
 395         lcddev.ext   = 0;                       /* No extensions */
 396         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 397         lcddev.putc  = lcd_putc;                /* 'putc' function */
 398         lcddev.puts  = lcd_puts;                /* 'puts' function */
 399
 400         rc = stdio_register (&lcddev);
 401
 402         return (rc == 0) ? 1 : rc;
 403 }
 404
 405 /*----------------------------------------------------------------------*/
 406 void lcd_clear(void)
 407 {
 408 #if LCD_BPP == LCD_MONOCHROME
 409         /* Setting the palette */
 410         lcd_initcolregs();
 411
 412 #elif LCD_BPP == LCD_COLOR8
 413         /* Setting the palette */
 414         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 415         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 416         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 417         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 418         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 419         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 420         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 421         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 422         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 423 #endif
 424
 425 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 426         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 427         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 428 #else
 429         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 430         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 431 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 432
 433 #ifdef  LCD_TEST_PATTERN
 434         test_pattern();
 435 #else
 436         /* set framebuffer to background color */
 437         memset((char *)lcd_base,
 438                 COLOR_MASK(lcd_getbgcolor()),
 439                 lcd_line_length*panel_info.vl_row);
 440 #endif
 441         /* Paint the logo and retrieve LCD base address */
 442         debug("[LCD] Drawing the logo...\n");
 443         lcd_console_address = lcd_logo ();
 444
 445         console_col = 0;
 446         console_row = 0;
 447         lcd_sync();
 448 }
 449
 450 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 451                         char *const argv[])
 452 {
 453         lcd_clear();
 454         return 0;
 455 }
 456
 457 U_BOOT_CMD(
 458         cls,    1,      1,      do_lcd_clear,
 459         "clear screen",
 460         ""
 461 );
 462
 463 /*----------------------------------------------------------------------*/
 464
 465 static int lcd_init(void *lcdbase)
 466 {
 467         /* Initialize the lcd controller */
 468         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 469
 470         lcd_ctrl_init(lcdbase);
 471         lcd_is_enabled = 1;
 472         lcd_clear();
 473         lcd_enable ();
 474
 475         /* Initialize the console */
 476         console_col = 0;
 477 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 478         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 479 #else
 480         console_row = 1;        /* leave 1 blank line below logo */
 481 #endif
 482
 483         return 0;
 484 }
 485
 486
 487 /************************************************************************/
 488 /* ** ROM capable initialization part - needed to reserve FB memory     */
 489 /************************************************************************/
 490 /*
 491  * This is called early in the system initialization to grab memory
 492  * for the LCD controller.
 493  * Returns new address for monitor, after reserving LCD buffer memory
 494  *
 495  * Note that this is running from ROM, so no write access to global data.
 496  */
 497 ulong lcd_setmem(ulong addr)
 498 {
 499         ulong size;
 500         int line_length;
 501
 502         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 503                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 504
 505         size = lcd_get_size(&line_length);
 506
 507         /* Round up to nearest full page, or MMU section if defined */
 508         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 509         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 510
 511         /* Allocate pages for the frame buffer. */
 512         addr -= size;
 513
 514         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 515
 516         return addr;
 517 }
 518
 519 /*----------------------------------------------------------------------*/
 520
 521 static void lcd_setfgcolor(int color)
 522 {
 523         lcd_color_fg = color;
 524 }
 525
 526 /*----------------------------------------------------------------------*/
 527
 528 static void lcd_setbgcolor(int color)
 529 {
 530         lcd_color_bg = color;
 531 }
 532
 533 /*----------------------------------------------------------------------*/
 534
 535 #ifdef  NOT_USED_SO_FAR
 536 static int lcd_getfgcolor(void)
 537 {
 538         return lcd_color_fg;
 539 }
 540 #endif  /* NOT_USED_SO_FAR */
 541
 542 /*----------------------------------------------------------------------*/
 543
 544 static int lcd_getbgcolor(void)
 545 {
 546         return lcd_color_bg;
 547 }
 548
 549 /*----------------------------------------------------------------------*/
 550
 551 /************************************************************************/
 552 /* ** Chipset depending Bitmap / Logo stuff...                          */
 553 /************************************************************************/
 554 static inline ushort *configuration_get_cmap(void)
 555 {
 556 #if defined CONFIG_CPU_PXA
 557         struct pxafb_info *fbi = &panel_info.pxa;
 558         return (ushort *)fbi->palette;
 559 #elif defined(CONFIG_MPC823)
 560         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 561         cpm8xx_t *cp = &(immr->im_cpm);
 562         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 563 #elif defined(CONFIG_ATMEL_LCD)
 564         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 565 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 566         return panel_info.cmap;
 567 #else
 568 #if defined(CONFIG_LCD_LOGO)
 569         return bmp_logo_palette;
 570 #else
 571         return NULL;
 572 #endif
 573 #endif
 574 }
 575
 576 #ifdef CONFIG_LCD_LOGO
 577 void bitmap_plot(int x, int y)
 578 {
 579 #ifdef CONFIG_ATMEL_LCD
 580         uint *cmap = (uint *)bmp_logo_palette;
 581 #else
 582         ushort *cmap = (ushort *)bmp_logo_palette;
 583 #endif
 584         ushort i, j;
 585         uchar *bmap;
 586         uchar *fb;
 587         ushort *fb16;
 588 #if defined(CONFIG_MPC823)
 589         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 590         cpm8xx_t *cp = &(immr->im_cpm);
 591 #endif
 592
 593         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 594                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 595                 ARRAY_SIZE(bmp_logo_palette));
 596
 597         bmap = &bmp_logo_bitmap[0];
 598         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 599
 600         if (NBITS(panel_info.vl_bpix) < 12) {
 601                 /* Leave room for default color map
 602                  * default case: generic system with no cmap (most likely 16bpp)
 603                  * cmap was set to the source palette, so no change is done.
 604                  * This avoids even more ifdefs in the next stanza
 605                  */
 606 #if defined(CONFIG_MPC823)
 607                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 608 #elif defined(CONFIG_ATMEL_LCD)
 609                 cmap = (uint *)configuration_get_cmap();
 610 #else
 611                 cmap = configuration_get_cmap();
 612 #endif
 613
 614                 WATCHDOG_RESET();
 615
 616                 /* Set color map */
 617                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 618                         ushort colreg = bmp_logo_palette[i];
 619 #ifdef CONFIG_ATMEL_LCD
 620                         uint lut_entry;
 621 #ifdef CONFIG_ATMEL_LCD_BGR555
 622                         lut_entry = ((colreg & 0x000F) << 11) |
 623                                         ((colreg & 0x00F0) <<  2) |
 624                                         ((colreg & 0x0F00) >>  7);
 625 #else /* CONFIG_ATMEL_LCD_RGB565 */
 626                         lut_entry = ((colreg & 0x000F) << 1) |
 627                                         ((colreg & 0x00F0) << 3) |
 628                                         ((colreg & 0x0F00) << 4);
 629 #endif
 630                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 631                         cmap++;
 632 #else /* !CONFIG_ATMEL_LCD */
 633 #ifdef  CONFIG_SYS_INVERT_COLORS
 634                         *cmap++ = 0xffff - colreg;
 635 #else
 636                         *cmap++ = colreg;
 637 #endif
 638 #endif /* CONFIG_ATMEL_LCD */
 639                 }
 640
 641                 WATCHDOG_RESET();
 642
 643                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 644                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 645                         bmap += BMP_LOGO_WIDTH;
 646                         fb   += panel_info.vl_col;
 647                 }
 648         }
 649         else { /* true color mode */
 650                 u16 col16;
 651                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 652                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 653                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 654                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 655                                 fb16[j] =
 656                                         ((col16 & 0x000F) << 1) |
 657                                         ((col16 & 0x00F0) << 3) |
 658                                         ((col16 & 0x0F00) << 4);
 659                                 }
 660                         bmap += BMP_LOGO_WIDTH;
 661                         fb16 += panel_info.vl_col;
 662                 }
 663         }
 664
 665         WATCHDOG_RESET();
 666         lcd_sync();
 667 }
 668 #else
 669 static inline void bitmap_plot(int x, int y) {}
 670 #endif /* CONFIG_LCD_LOGO */
 671
 672 /*----------------------------------------------------------------------*/
 673 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 674 /*
 675  * Display the BMP file located at address bmp_image.
 676  * Only uncompressed.
 677  */
 678
 679 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 680 #define BMP_ALIGN_CENTER        0x7FFF
 681
 682 static void splash_align_axis(int *axis, unsigned long panel_size,
 683                                         unsigned long picture_size)
 684 {
 685         unsigned long panel_picture_delta = panel_size - picture_size;
 686         unsigned long axis_alignment;
 687
 688         if (*axis == BMP_ALIGN_CENTER)
 689                 axis_alignment = panel_picture_delta / 2;
 690         else if (*axis < 0)
 691                 axis_alignment = panel_picture_delta + *axis + 1;
 692         else
 693                 return;
 694
 695         *axis = max(0, axis_alignment);
 696 }
 697 #endif
 698
 699
 700 #ifdef CONFIG_LCD_BMP_RLE8
 701
 702 #define BMP_RLE8_ESCAPE         0
 703 #define BMP_RLE8_EOL            0
 704 #define BMP_RLE8_EOBMP          1
 705 #define BMP_RLE8_DELTA          2
 706
 707 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 708                                   int cnt)
 709 {
 710         while (cnt > 0) {
 711                 *(*fbp)++ = cmap[*bmap++];
 712                 cnt--;
 713         }
 714 }
 715
 716 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 717 {
 718         ushort *fb = *fbp;
 719         int cnt_8copy = cnt >> 3;
 720
 721         cnt -= cnt_8copy << 3;
 722         while (cnt_8copy > 0) {
 723                 *fb++ = c;
 724                 *fb++ = c;
 725                 *fb++ = c;
 726                 *fb++ = c;
 727                 *fb++ = c;
 728                 *fb++ = c;
 729                 *fb++ = c;
 730                 *fb++ = c;
 731                 cnt_8copy--;
 732         }
 733         while (cnt > 0) {
 734                 *fb++ = c;
 735                 cnt--;
 736         }
 737         (*fbp) = fb;
 738 }
 739
 740 /*
 741  * Do not call this function directly, must be called from
 742  * lcd_display_bitmap.
 743  */
 744 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 745                                     int x_off, int y_off)
 746 {
 747         uchar *bmap;
 748         ulong width, height;
 749         ulong cnt, runlen;
 750         int x, y;
 751         int decode = 1;
 752
 753         width = le32_to_cpu(bmp->header.width);
 754         height = le32_to_cpu(bmp->header.height);
 755         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 756
 757         x = 0;
 758         y = height - 1;
 759
 760         while (decode) {
 761                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 762                         switch (bmap[1]) {
 763                         case BMP_RLE8_EOL:
 764                                 /* end of line */
 765                                 bmap += 2;
 766                                 x = 0;
 767                                 y--;
 768                                 /* 16bpix, 2-byte per pixel, width should *2 */
 769                                 fb -= (width * 2 + lcd_line_length);
 770                                 break;
 771                         case BMP_RLE8_EOBMP:
 772                                 /* end of bitmap */
 773                                 decode = 0;
 774                                 break;
 775                         case BMP_RLE8_DELTA:
 776                                 /* delta run */
 777                                 x += bmap[2];
 778                                 y -= bmap[3];
 779                                 /* 16bpix, 2-byte per pixel, x should *2 */
 780                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 781                                         * lcd_line_length + (x + x_off) * 2);
 782                                 bmap += 4;
 783                                 break;
 784                         default:
 785                                 /* unencoded run */
 786                                 runlen = bmap[1];
 787                                 bmap += 2;
 788                                 if (y < height) {
 789                                         if (x < width) {
 790                                                 if (x + runlen > width)
 791                                                         cnt = width - x;
 792                                                 else
 793                                                         cnt = runlen;
 794                                                 draw_unencoded_bitmap(
 795                                                         (ushort **)&fb,
 796                                                         bmap, cmap, cnt);
 797                                         }
 798                                         x += runlen;
 799                                 }
 800                                 bmap += runlen;
 801                                 if (runlen & 1)
 802                                         bmap++;
 803                         }
 804                 } else {
 805                         /* encoded run */
 806                         if (y < height) {
 807                                 runlen = bmap[0];
 808                                 if (x < width) {
 809                                         /* aggregate the same code */
 810                                         while (bmap[0] == 0xff &&
 811                                                bmap[2] != BMP_RLE8_ESCAPE &&
 812                                                bmap[1] == bmap[3]) {
 813                                                 runlen += bmap[2];
 814                                                 bmap += 2;
 815                                         }
 816                                         if (x + runlen > width)
 817                                                 cnt = width - x;
 818                                         else
 819                                                 cnt = runlen;
 820                                         draw_encoded_bitmap((ushort **)&fb,
 821                                                 cmap[bmap[1]], cnt);
 822                                 }
 823                                 x += runlen;
 824                         }
 825                         bmap += 2;
 826                 }
 827         }
 828 }
 829 #endif
 830
 831 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 832 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 833 #else
 834 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 835 #endif
 836
 837 #if defined(CONFIG_BMP_16BPP)
 838 #if defined(CONFIG_ATMEL_LCD_BGR555)
 839 static inline void fb_put_word(uchar **fb, uchar **from)
 840 {
 841         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 842         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 843         *from += 2;
 844 }
 845 #else
 846 static inline void fb_put_word(uchar **fb, uchar **from)
 847 {
 848         *(*fb)++ = *(*from)++;
 849         *(*fb)++ = *(*from)++;
 850 }
 851 #endif
 852 #endif /* CONFIG_BMP_16BPP */
 853
 854 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 855 {
 856 #if !defined(CONFIG_MCC200)
 857         ushort *cmap = NULL;
 858 #endif
 859         ushort *cmap_base = NULL;
 860         ushort i, j;
 861         uchar *fb;
 862         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 863         uchar *bmap;
 864         ushort padded_width;
 865         unsigned long width, height, byte_width;
 866         unsigned long pwidth = panel_info.vl_col;
 867         unsigned colors, bpix, bmp_bpix;
 868
 869         if (!bmp || !((bmp->header.signature[0] == 'B') &&
 870                 (bmp->header.signature[1] == 'M'))) {
 871                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 872
 873                 return 1;
 874         }
 875
 876         width = le32_to_cpu(bmp->header.width);
 877         height = le32_to_cpu(bmp->header.height);
 878         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 879         colors = 1 << bmp_bpix;
 880
 881         bpix = NBITS(panel_info.vl_bpix);
 882
 883         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
 884                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 885                         bpix, bmp_bpix);
 886
 887                 return 1;
 888         }
 889
 890         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 891         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 892                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 893                         bpix,
 894                         le16_to_cpu(bmp->header.bit_count));
 895
 896                 return 1;
 897         }
 898
 899         debug("Display-bmp: %d x %d  with %d colors\n",
 900                 (int)width, (int)height, (int)colors);
 901
 902 #if !defined(CONFIG_MCC200)
 903         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 904         if (bmp_bpix == 8) {
 905                 cmap = configuration_get_cmap();
 906                 cmap_base = cmap;
 907
 908                 /* Set color map */
 909                 for (i = 0; i < colors; ++i) {
 910                         bmp_color_table_entry_t cte = bmp->color_table[i];
 911 #if !defined(CONFIG_ATMEL_LCD)
 912                         ushort colreg =
 913                                 ( ((cte.red)   << 8) & 0xf800) |
 914                                 ( ((cte.green) << 3) & 0x07e0) |
 915                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 916 #ifdef CONFIG_SYS_INVERT_COLORS
 917                         *cmap = 0xffff - colreg;
 918 #else
 919                         *cmap = colreg;
 920 #endif
 921 #if defined(CONFIG_MPC823)
 922                         cmap--;
 923 #else
 924                         cmap++;
 925 #endif
 926 #else /* CONFIG_ATMEL_LCD */
 927                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 928 #endif
 929                 }
 930         }
 931 #endif
 932
 933         /*
 934          *  BMP format for Monochrome assumes that the state of a
 935          * pixel is described on a per Bit basis, not per Byte.
 936          *  So, in case of Monochrome BMP we should align widths
 937          * on a byte boundary and convert them from Bit to Byte
 938          * units.
 939          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 940          * their own ways, so make the converting to be MCC200
 941          * specific.
 942          */
 943 #if defined(CONFIG_MCC200)
 944         if (bpix == 1) {
 945                 width = ((width + 7) & ~7) >> 3;
 946                 x     = ((x + 7) & ~7) >> 3;
 947                 pwidth= ((pwidth + 7) & ~7) >> 3;
 948         }
 949 #endif
 950
 951         padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
 952
 953 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 954         splash_align_axis(&x, pwidth, width);
 955         splash_align_axis(&y, panel_info.vl_row, height);
 956 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 957
 958         if ((x + width) > pwidth)
 959                 width = pwidth - x;
 960         if ((y + height) > panel_info.vl_row)
 961                 height = panel_info.vl_row - y;
 962
 963         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 964         fb   = (uchar *) (lcd_base +
 965                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 966
 967         switch (bmp_bpix) {
 968         case 1: /* pass through */
 969         case 8:
 970 #ifdef CONFIG_LCD_BMP_RLE8
 971                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 972                         if (bpix != 16) {
 973                                 /* TODO implement render code for bpix != 16 */
 974                                 printf("Error: only support 16 bpix");
 975                                 return 1;
 976                         }
 977                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 978                         break;
 979                 }
 980 #endif
 981
 982                 if (bpix != 16)
 983                         byte_width = width;
 984                 else
 985                         byte_width = width * 2;
 986
 987                 for (i = 0; i < height; ++i) {
 988                         WATCHDOG_RESET();
 989                         for (j = 0; j < width; j++) {
 990                                 if (bpix != 16) {
 991                                         FB_PUT_BYTE(fb, bmap);
 992                                 } else {
 993                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 994                                         fb += sizeof(uint16_t) / sizeof(*fb);
 995                                 }
 996                         }
 997                         bmap += (padded_width - width);
 998                         fb   -= (byte_width + lcd_line_length);
 999                 }
1000                 break;
1001
1002 #if defined(CONFIG_BMP_16BPP)
1003         case 16:
1004                 for (i = 0; i < height; ++i) {
1005                         WATCHDOG_RESET();
1006                         for (j = 0; j < width; j++)
1007                                 fb_put_word(&fb, &bmap);
1008
1009                         bmap += (padded_width - width) * 2;
1010                         fb   -= (width * 2 + lcd_line_length);
1011                 }
1012                 break;
1013 #endif /* CONFIG_BMP_16BPP */
1014
1015 #if defined(CONFIG_BMP_32BPP)
1016         case 32:
1017                 for (i = 0; i < height; ++i) {
1018                         for (j = 0; j < width; j++) {
1019                                 *(fb++) = *(bmap++);
1020                                 *(fb++) = *(bmap++);
1021                                 *(fb++) = *(bmap++);
1022                                 *(fb++) = *(bmap++);
1023                         }
1024                         fb  -= (lcd_line_length + width * (bpix / 8));
1025                 }
1026                 break;
1027 #endif /* CONFIG_BMP_32BPP */
1028         default:
1029                 break;
1030         };
1031
1032         lcd_sync();
1033         return 0;
1034 }
1035 #endif
1036
1037 static void *lcd_logo(void)
1038 {
1039 #ifdef CONFIG_SPLASH_SCREEN
1040         char *s;
1041         ulong addr;
1042         static int do_splash = 1;
1043
1044         if (do_splash && (s = getenv("splashimage")) != NULL) {
1045                 int x = 0, y = 0;
1046                 do_splash = 0;
1047
1048                 addr = simple_strtoul (s, NULL, 16);
1049 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1050                 s = getenv("splashpos");
1051                 if (s != NULL) {
1052                         if (s[0] == 'm')
1053                                 x = BMP_ALIGN_CENTER;
1054                         else
1055                                 x = simple_strtol(s, NULL, 0);
1056
1057                         s = strchr(s + 1, ',');
1058                         if (s != NULL) {
1059                                 if (s[1] == 'm')
1060                                         y = BMP_ALIGN_CENTER;
1061                                 else
1062                                         y = simple_strtol (s + 1, NULL, 0);
1063                         }
1064                 }
1065 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1066
1067                 if (bmp_display(addr, x, y) == 0)
1068                         return (void *)lcd_base;
1069         }
1070 #endif /* CONFIG_SPLASH_SCREEN */
1071
1072         bitmap_plot(0, 0);
1073
1074 #ifdef CONFIG_LCD_INFO
1075         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1076         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1077         lcd_show_board_info();
1078 #endif /* CONFIG_LCD_INFO */
1079
1080 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1081         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1082 #else
1083         return (void *)lcd_base;
1084 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1085 }
1086
1087 void lcd_position_cursor(unsigned col, unsigned row)
1088 {
1089         console_col = min(col, CONSOLE_COLS - 1);
1090         console_row = min(row, CONSOLE_ROWS - 1);
1091 }
1092
1093 int lcd_get_pixel_width(void)
1094 {
1095         return panel_info.vl_col;
1096 }
1097
1098 int lcd_get_pixel_height(void)
1099 {
1100         return panel_info.vl_row;
1101 }
1102
1103 int lcd_get_screen_rows(void)
1104 {
1105         return CONSOLE_ROWS;
1106 }
1107
1108 int lcd_get_screen_columns(void)
1109 {
1110         return CONSOLE_COLS;
1111 }
1112
1113 /************************************************************************/
1114 /************************************************************************/