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 <search.h>
  37 #include <env_callback.h>
  38 #include <linux/types.h>
  39 #include <stdio_dev.h>
  40 #if defined(CONFIG_POST)
  41 #include <post.h>
  42 #endif
  43 #include <lcd.h>
  44 #include <watchdog.h>
  45
  46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  47         defined(CONFIG_CPU_MONAHANS)
  48 #define CONFIG_CPU_PXA
  49 #include <asm/byteorder.h>
  50 #endif
  51
  52 #if defined(CONFIG_MPC823)
  53 #include <lcdvideo.h>
  54 #endif
  55
  56 #if defined(CONFIG_ATMEL_LCD)
  57 #include <atmel_lcdc.h>
  58 #endif
  59
  60 /************************************************************************/
  61 /* ** FONT DATA                                                         */
  62 /************************************************************************/
  63 #include <video_font.h>         /* Get font data, width and height      */
  64 #include <video_font_data.h>
  65
  66 /************************************************************************/
  67 /* ** LOGO DATA                                                         */
  68 /************************************************************************/
  69 #ifdef CONFIG_LCD_LOGO
  70 # include <bmp_logo.h>          /* Get logo data, width and height      */
  71 # include <bmp_logo_data.h>
  72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  73 #  error Default Color Map overlaps with Logo Color Map
  74 # endif
  75 #endif
  76
  77 #ifndef CONFIG_LCD_ALIGNMENT
  78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  79 #endif
  80
  81 /* By default we scroll by a single line */
  82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  83 #define CONFIG_CONSOLE_SCROLL_LINES 1
  84 #endif
  85
  86 DECLARE_GLOBAL_DATA_PTR;
  87
  88 ulong lcd_setmem (ulong addr);
  89
  90 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
  91 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
  92 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
  93
  94 static int lcd_init(void *lcdbase);
  95
  96 static void *lcd_logo (void);
  97
  98 static int lcd_getbgcolor(void);
  99 static void lcd_setfgcolor(int color);
 100 static void lcd_setbgcolor(int color);
 101
 102 static int lcd_color_fg;
 103 static int lcd_color_bg;
 104
 105 char lcd_is_enabled = 0;
 106
 107 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 108
 109
 110 #ifdef  NOT_USED_SO_FAR
 111 static void lcd_getcolreg(ushort regno,
 112                                 ushort *red, ushort *green, ushort *blue);
 113 static int lcd_getfgcolor(void);
 114 #endif  /* NOT_USED_SO_FAR */
 115
 116 /************************************************************************/
 117
 118 /* Flush LCD activity to the caches */
 119 void lcd_sync(void)
 120 {
 121         /*
 122          * flush_dcache_range() is declared in common.h but it seems that some
 123          * architectures do not actually implement it. Is there a way to find
 124          * out whether it exists? For now, ARM is safe.
 125          */
 126 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 127         int line_length;
 128
 129         if (lcd_flush_dcache)
 130                 flush_dcache_range((u32)lcd_base,
 131                         (u32)(lcd_base + lcd_get_size(&line_length)));
 132 #endif
 133 }
 134
 135 void lcd_set_flush_dcache(int flush)
 136 {
 137         lcd_flush_dcache = (flush != 0);
 138 }
 139
 140 /*----------------------------------------------------------------------*/
 141
 142 static void console_scrollup(void)
 143 {
 144         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 145
 146         /* Copy up rows ignoring those that will be overwritten */
 147         memcpy(CONSOLE_ROW_FIRST,
 148                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 149                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 150
 151         /* Clear the last rows */
 152         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 153                 COLOR_MASK(lcd_color_bg),
 154                CONSOLE_ROW_SIZE * rows);
 155
 156         lcd_sync();
 157         console_row -= rows;
 158 }
 159
 160 /*----------------------------------------------------------------------*/
 161
 162 static inline void console_back(void)
 163 {
 164         if (--console_col < 0) {
 165                 console_col = CONSOLE_COLS-1 ;
 166                 if (--console_row < 0) {
 167                         console_row = 0;
 168                 }
 169         }
 170
 171         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 172                 console_row * VIDEO_FONT_HEIGHT, ' ');
 173 }
 174
 175 /*----------------------------------------------------------------------*/
 176
 177 static inline void console_newline(void)
 178 {
 179         ++console_row;
 180         console_col = 0;
 181
 182         /* Check if we need to scroll the terminal */
 183         if (console_row >= CONSOLE_ROWS) {
 184                 /* Scroll everything up */
 185                 console_scrollup();
 186         } else {
 187                 lcd_sync();
 188         }
 189 }
 190
 191 /*----------------------------------------------------------------------*/
 192
 193 void lcd_putc(const char c)
 194 {
 195         if (!lcd_is_enabled) {
 196                 serial_putc(c);
 197
 198                 return;
 199         }
 200
 201         switch (c) {
 202         case '\r':
 203                 console_col = 0;
 204
 205                 return;
 206         case '\n':
 207                 console_newline();
 208
 209                 return;
 210         case '\t':      /* Tab (8 chars alignment) */
 211                 console_col +=  8;
 212                 console_col &= ~7;
 213
 214                 if (console_col >= CONSOLE_COLS)
 215                         console_newline();
 216
 217                 return;
 218         case '\b':
 219                 console_back();
 220
 221                 return;
 222         default:
 223                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 224                         console_row * VIDEO_FONT_HEIGHT, c);
 225                 if (++console_col >= CONSOLE_COLS)
 226                         console_newline();
 227         }
 228 }
 229
 230 /*----------------------------------------------------------------------*/
 231
 232 void lcd_puts(const char *s)
 233 {
 234         if (!lcd_is_enabled) {
 235                 serial_puts(s);
 236
 237                 return;
 238         }
 239
 240         while (*s) {
 241                 lcd_putc(*s++);
 242         }
 243         lcd_sync();
 244 }
 245
 246 /*----------------------------------------------------------------------*/
 247
 248 void lcd_printf(const char *fmt, ...)
 249 {
 250         va_list args;
 251         char buf[CONFIG_SYS_PBSIZE];
 252
 253         va_start(args, fmt);
 254         vsprintf(buf, fmt, args);
 255         va_end(args);
 256
 257         lcd_puts(buf);
 258 }
 259
 260 /************************************************************************/
 261 /* ** Low-Level Graphics Routines                                       */
 262 /************************************************************************/
 263
 264 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 265 {
 266         uchar *dest;
 267         ushort row;
 268
 269 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 270         y += BMP_LOGO_HEIGHT;
 271 #endif
 272
 273 #if LCD_BPP == LCD_MONOCHROME
 274         ushort off  = x * (1 << LCD_BPP) % 8;
 275 #endif
 276
 277         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 278
 279         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 280                 uchar *s = str;
 281                 int i;
 282 #if LCD_BPP == LCD_COLOR16
 283                 ushort *d = (ushort *)dest;
 284 #else
 285                 uchar *d = dest;
 286 #endif
 287
 288 #if LCD_BPP == LCD_MONOCHROME
 289                 uchar rest = *d & -(1 << (8-off));
 290                 uchar sym;
 291 #endif
 292                 for (i = 0; i < count; ++i) {
 293                         uchar c, bits;
 294
 295                         c = *s++;
 296                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 297
 298 #if LCD_BPP == LCD_MONOCHROME
 299                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 300                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 301
 302                         *d++ = rest | (sym >> off);
 303                         rest = sym << (8-off);
 304 #elif LCD_BPP == LCD_COLOR8
 305                         for (c = 0; c < 8; ++c) {
 306                                 *d++ = (bits & 0x80) ?
 307                                                 lcd_color_fg : lcd_color_bg;
 308                                 bits <<= 1;
 309                         }
 310 #elif LCD_BPP == LCD_COLOR16
 311                         for (c = 0; c < 8; ++c) {
 312                                 *d++ = (bits & 0x80) ?
 313                                                 lcd_color_fg : lcd_color_bg;
 314                                 bits <<= 1;
 315                         }
 316 #endif
 317                 }
 318 #if LCD_BPP == LCD_MONOCHROME
 319                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 320 #endif
 321         }
 322 }
 323
 324 /*----------------------------------------------------------------------*/
 325
 326 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 327 {
 328         lcd_drawchars(x, y, s, strlen((char *)s));
 329 }
 330
 331 /*----------------------------------------------------------------------*/
 332
 333 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 334 {
 335         lcd_drawchars(x, y, &c, 1);
 336 }
 337
 338 /************************************************************************/
 339 /**  Small utility to check that you got the colours right              */
 340 /************************************************************************/
 341 #ifdef LCD_TEST_PATTERN
 342
 343 #define N_BLK_VERT      2
 344 #define N_BLK_HOR       3
 345
 346 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 347         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 348         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 349 };
 350
 351 static void test_pattern(void)
 352 {
 353         ushort v_max  = panel_info.vl_row;
 354         ushort h_max  = panel_info.vl_col;
 355         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 356         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 357         ushort v, h;
 358         uchar *pix = (uchar *)lcd_base;
 359
 360         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 361                 h_max, v_max, h_step, v_step);
 362
 363         /* WARNING: Code silently assumes 8bit/pixel */
 364         for (v = 0; v < v_max; ++v) {
 365                 uchar iy = v / v_step;
 366                 for (h = 0; h < h_max; ++h) {
 367                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 368                         *pix++ = test_colors[ix];
 369                 }
 370         }
 371 }
 372 #endif /* LCD_TEST_PATTERN */
 373
 374
 375 /************************************************************************/
 376 /* ** GENERIC Initialization Routines                                   */
 377 /************************************************************************/
 378
 379 int lcd_get_size(int *line_length)
 380 {
 381         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 382         return *line_length * panel_info.vl_row;
 383 }
 384
 385 int drv_lcd_init (void)
 386 {
 387         struct stdio_dev lcddev;
 388         int rc;
 389
 390         lcd_base = (void *)(gd->fb_base);
 391
 392         lcd_get_size(&lcd_line_length);
 393
 394         lcd_init(lcd_base);             /* LCD initialization */
 395
 396         /* Device initialization */
 397         memset(&lcddev, 0, sizeof(lcddev));
 398
 399         strcpy(lcddev.name, "lcd");
 400         lcddev.ext   = 0;                       /* No extensions */
 401         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 402         lcddev.putc  = lcd_putc;                /* 'putc' function */
 403         lcddev.puts  = lcd_puts;                /* 'puts' function */
 404
 405         rc = stdio_register (&lcddev);
 406
 407         return (rc == 0) ? 1 : rc;
 408 }
 409
 410 /*----------------------------------------------------------------------*/
 411 void lcd_clear(void)
 412 {
 413 #if LCD_BPP == LCD_MONOCHROME
 414         /* Setting the palette */
 415         lcd_initcolregs();
 416
 417 #elif LCD_BPP == LCD_COLOR8
 418         /* Setting the palette */
 419         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 420         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 421         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 422         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 423         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 424         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 425         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 426         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 427         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 428 #endif
 429
 430 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 431         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 432         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 433 #else
 434         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 435         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 436 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 437
 438 #ifdef  LCD_TEST_PATTERN
 439         test_pattern();
 440 #else
 441         /* set framebuffer to background color */
 442         memset((char *)lcd_base,
 443                 COLOR_MASK(lcd_getbgcolor()),
 444                 lcd_line_length*panel_info.vl_row);
 445 #endif
 446         /* Paint the logo and retrieve LCD base address */
 447         debug("[LCD] Drawing the logo...\n");
 448         lcd_console_address = lcd_logo ();
 449
 450         console_col = 0;
 451         console_row = 0;
 452         lcd_sync();
 453 }
 454
 455 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 456                         char *const argv[])
 457 {
 458         lcd_clear();
 459         return 0;
 460 }
 461
 462 U_BOOT_CMD(
 463         cls,    1,      1,      do_lcd_clear,
 464         "clear screen",
 465         ""
 466 );
 467
 468 /*----------------------------------------------------------------------*/
 469
 470 static int lcd_init(void *lcdbase)
 471 {
 472         /* Initialize the lcd controller */
 473         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 474
 475         lcd_ctrl_init(lcdbase);
 476         lcd_is_enabled = 1;
 477         lcd_clear();
 478         lcd_enable ();
 479
 480         /* Initialize the console */
 481         console_col = 0;
 482 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 483         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 484 #else
 485         console_row = 1;        /* leave 1 blank line below logo */
 486 #endif
 487
 488         return 0;
 489 }
 490
 491
 492 /************************************************************************/
 493 /* ** ROM capable initialization part - needed to reserve FB memory     */
 494 /************************************************************************/
 495 /*
 496  * This is called early in the system initialization to grab memory
 497  * for the LCD controller.
 498  * Returns new address for monitor, after reserving LCD buffer memory
 499  *
 500  * Note that this is running from ROM, so no write access to global data.
 501  */
 502 ulong lcd_setmem(ulong addr)
 503 {
 504         ulong size;
 505         int line_length;
 506
 507         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 508                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 509
 510         size = lcd_get_size(&line_length);
 511
 512         /* Round up to nearest full page, or MMU section if defined */
 513         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 514         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 515
 516         /* Allocate pages for the frame buffer. */
 517         addr -= size;
 518
 519         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 520
 521         return addr;
 522 }
 523
 524 /*----------------------------------------------------------------------*/
 525
 526 static void lcd_setfgcolor(int color)
 527 {
 528         lcd_color_fg = color;
 529 }
 530
 531 /*----------------------------------------------------------------------*/
 532
 533 static void lcd_setbgcolor(int color)
 534 {
 535         lcd_color_bg = color;
 536 }
 537
 538 /*----------------------------------------------------------------------*/
 539
 540 int lcd_getfgcolor(void)
 541 {
 542         return lcd_color_fg;
 543 }
 544
 545 /*----------------------------------------------------------------------*/
 546
 547 static int lcd_getbgcolor(void)
 548 {
 549         return lcd_color_bg;
 550 }
 551
 552 /*----------------------------------------------------------------------*/
 553
 554 /************************************************************************/
 555 /* ** Chipset depending Bitmap / Logo stuff...                          */
 556 /************************************************************************/
 557 static inline ushort *configuration_get_cmap(void)
 558 {
 559 #if defined CONFIG_CPU_PXA
 560         struct pxafb_info *fbi = &panel_info.pxa;
 561         return (ushort *)fbi->palette;
 562 #elif defined(CONFIG_MPC823)
 563         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 564         cpm8xx_t *cp = &(immr->im_cpm);
 565         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 566 #elif defined(CONFIG_ATMEL_LCD)
 567         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 568 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 569         return panel_info.cmap;
 570 #else
 571 #if defined(CONFIG_LCD_LOGO)
 572         return bmp_logo_palette;
 573 #else
 574         return NULL;
 575 #endif
 576 #endif
 577 }
 578
 579 #ifdef CONFIG_LCD_LOGO
 580 void bitmap_plot(int x, int y)
 581 {
 582 #ifdef CONFIG_ATMEL_LCD
 583         uint *cmap = (uint *)bmp_logo_palette;
 584 #else
 585         ushort *cmap = (ushort *)bmp_logo_palette;
 586 #endif
 587         ushort i, j;
 588         uchar *bmap;
 589         uchar *fb;
 590         ushort *fb16;
 591 #if defined(CONFIG_MPC823)
 592         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 593         cpm8xx_t *cp = &(immr->im_cpm);
 594 #endif
 595
 596         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 597                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 598                 ARRAY_SIZE(bmp_logo_palette));
 599
 600         bmap = &bmp_logo_bitmap[0];
 601         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 602
 603         if (NBITS(panel_info.vl_bpix) < 12) {
 604                 /* Leave room for default color map
 605                  * default case: generic system with no cmap (most likely 16bpp)
 606                  * cmap was set to the source palette, so no change is done.
 607                  * This avoids even more ifdefs in the next stanza
 608                  */
 609 #if defined(CONFIG_MPC823)
 610                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 611 #elif defined(CONFIG_ATMEL_LCD)
 612                 cmap = (uint *)configuration_get_cmap();
 613 #else
 614                 cmap = configuration_get_cmap();
 615 #endif
 616
 617                 WATCHDOG_RESET();
 618
 619                 /* Set color map */
 620                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 621                         ushort colreg = bmp_logo_palette[i];
 622 #ifdef CONFIG_ATMEL_LCD
 623                         uint lut_entry;
 624 #ifdef CONFIG_ATMEL_LCD_BGR555
 625                         lut_entry = ((colreg & 0x000F) << 11) |
 626                                         ((colreg & 0x00F0) <<  2) |
 627                                         ((colreg & 0x0F00) >>  7);
 628 #else /* CONFIG_ATMEL_LCD_RGB565 */
 629                         lut_entry = ((colreg & 0x000F) << 1) |
 630                                         ((colreg & 0x00F0) << 3) |
 631                                         ((colreg & 0x0F00) << 4);
 632 #endif
 633                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 634                         cmap++;
 635 #else /* !CONFIG_ATMEL_LCD */
 636 #ifdef  CONFIG_SYS_INVERT_COLORS
 637                         *cmap++ = 0xffff - colreg;
 638 #else
 639                         *cmap++ = colreg;
 640 #endif
 641 #endif /* CONFIG_ATMEL_LCD */
 642                 }
 643
 644                 WATCHDOG_RESET();
 645
 646                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 647                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 648                         bmap += BMP_LOGO_WIDTH;
 649                         fb   += panel_info.vl_col;
 650                 }
 651         }
 652         else { /* true color mode */
 653                 u16 col16;
 654                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 655                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 656                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 657                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 658                                 fb16[j] =
 659                                         ((col16 & 0x000F) << 1) |
 660                                         ((col16 & 0x00F0) << 3) |
 661                                         ((col16 & 0x0F00) << 4);
 662                                 }
 663                         bmap += BMP_LOGO_WIDTH;
 664                         fb16 += panel_info.vl_col;
 665                 }
 666         }
 667
 668         WATCHDOG_RESET();
 669         lcd_sync();
 670 }
 671 #else
 672 static inline void bitmap_plot(int x, int y) {}
 673 #endif /* CONFIG_LCD_LOGO */
 674
 675 /*----------------------------------------------------------------------*/
 676 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 677 /*
 678  * Display the BMP file located at address bmp_image.
 679  * Only uncompressed.
 680  */
 681
 682 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 683 #define BMP_ALIGN_CENTER        0x7FFF
 684
 685 static void splash_align_axis(int *axis, unsigned long panel_size,
 686                                         unsigned long picture_size)
 687 {
 688         unsigned long panel_picture_delta = panel_size - picture_size;
 689         unsigned long axis_alignment;
 690
 691         if (*axis == BMP_ALIGN_CENTER)
 692                 axis_alignment = panel_picture_delta / 2;
 693         else if (*axis < 0)
 694                 axis_alignment = panel_picture_delta + *axis + 1;
 695         else
 696                 return;
 697
 698         *axis = max(0, axis_alignment);
 699 }
 700 #endif
 701
 702
 703 #ifdef CONFIG_LCD_BMP_RLE8
 704
 705 #define BMP_RLE8_ESCAPE         0
 706 #define BMP_RLE8_EOL            0
 707 #define BMP_RLE8_EOBMP          1
 708 #define BMP_RLE8_DELTA          2
 709
 710 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 711                                   int cnt)
 712 {
 713         while (cnt > 0) {
 714                 *(*fbp)++ = cmap[*bmap++];
 715                 cnt--;
 716         }
 717 }
 718
 719 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 720 {
 721         ushort *fb = *fbp;
 722         int cnt_8copy = cnt >> 3;
 723
 724         cnt -= cnt_8copy << 3;
 725         while (cnt_8copy > 0) {
 726                 *fb++ = c;
 727                 *fb++ = c;
 728                 *fb++ = c;
 729                 *fb++ = c;
 730                 *fb++ = c;
 731                 *fb++ = c;
 732                 *fb++ = c;
 733                 *fb++ = c;
 734                 cnt_8copy--;
 735         }
 736         while (cnt > 0) {
 737                 *fb++ = c;
 738                 cnt--;
 739         }
 740         (*fbp) = fb;
 741 }
 742
 743 /*
 744  * Do not call this function directly, must be called from
 745  * lcd_display_bitmap.
 746  */
 747 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 748                                     int x_off, int y_off)
 749 {
 750         uchar *bmap;
 751         ulong width, height;
 752         ulong cnt, runlen;
 753         int x, y;
 754         int decode = 1;
 755
 756         width = le32_to_cpu(bmp->header.width);
 757         height = le32_to_cpu(bmp->header.height);
 758         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 759
 760         x = 0;
 761         y = height - 1;
 762
 763         while (decode) {
 764                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 765                         switch (bmap[1]) {
 766                         case BMP_RLE8_EOL:
 767                                 /* end of line */
 768                                 bmap += 2;
 769                                 x = 0;
 770                                 y--;
 771                                 /* 16bpix, 2-byte per pixel, width should *2 */
 772                                 fb -= (width * 2 + lcd_line_length);
 773                                 break;
 774                         case BMP_RLE8_EOBMP:
 775                                 /* end of bitmap */
 776                                 decode = 0;
 777                                 break;
 778                         case BMP_RLE8_DELTA:
 779                                 /* delta run */
 780                                 x += bmap[2];
 781                                 y -= bmap[3];
 782                                 /* 16bpix, 2-byte per pixel, x should *2 */
 783                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 784                                         * lcd_line_length + (x + x_off) * 2);
 785                                 bmap += 4;
 786                                 break;
 787                         default:
 788                                 /* unencoded run */
 789                                 runlen = bmap[1];
 790                                 bmap += 2;
 791                                 if (y < height) {
 792                                         if (x < width) {
 793                                                 if (x + runlen > width)
 794                                                         cnt = width - x;
 795                                                 else
 796                                                         cnt = runlen;
 797                                                 draw_unencoded_bitmap(
 798                                                         (ushort **)&fb,
 799                                                         bmap, cmap, cnt);
 800                                         }
 801                                         x += runlen;
 802                                 }
 803                                 bmap += runlen;
 804                                 if (runlen & 1)
 805                                         bmap++;
 806                         }
 807                 } else {
 808                         /* encoded run */
 809                         if (y < height) {
 810                                 runlen = bmap[0];
 811                                 if (x < width) {
 812                                         /* aggregate the same code */
 813                                         while (bmap[0] == 0xff &&
 814                                                bmap[2] != BMP_RLE8_ESCAPE &&
 815                                                bmap[1] == bmap[3]) {
 816                                                 runlen += bmap[2];
 817                                                 bmap += 2;
 818                                         }
 819                                         if (x + runlen > width)
 820                                                 cnt = width - x;
 821                                         else
 822                                                 cnt = runlen;
 823                                         draw_encoded_bitmap((ushort **)&fb,
 824                                                 cmap[bmap[1]], cnt);
 825                                 }
 826                                 x += runlen;
 827                         }
 828                         bmap += 2;
 829                 }
 830         }
 831 }
 832 #endif
 833
 834 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 835 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 836 #else
 837 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 838 #endif
 839
 840 #if defined(CONFIG_BMP_16BPP)
 841 #if defined(CONFIG_ATMEL_LCD_BGR555)
 842 static inline void fb_put_word(uchar **fb, uchar **from)
 843 {
 844         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 845         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 846         *from += 2;
 847 }
 848 #else
 849 static inline void fb_put_word(uchar **fb, uchar **from)
 850 {
 851         *(*fb)++ = *(*from)++;
 852         *(*fb)++ = *(*from)++;
 853 }
 854 #endif
 855 #endif /* CONFIG_BMP_16BPP */
 856
 857 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 858 {
 859 #if !defined(CONFIG_MCC200)
 860         ushort *cmap = NULL;
 861 #endif
 862         ushort *cmap_base = NULL;
 863         ushort i, j;
 864         uchar *fb;
 865         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 866         uchar *bmap;
 867         ushort padded_width;
 868         unsigned long width, height, byte_width;
 869         unsigned long pwidth = panel_info.vl_col;
 870         unsigned colors, bpix, bmp_bpix;
 871
 872         if (!bmp || !((bmp->header.signature[0] == 'B') &&
 873                 (bmp->header.signature[1] == 'M'))) {
 874                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 875
 876                 return 1;
 877         }
 878
 879         width = le32_to_cpu(bmp->header.width);
 880         height = le32_to_cpu(bmp->header.height);
 881         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 882         colors = 1 << bmp_bpix;
 883
 884         bpix = NBITS(panel_info.vl_bpix);
 885
 886         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
 887                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 888                         bpix, bmp_bpix);
 889
 890                 return 1;
 891         }
 892
 893         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 894         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 895                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 896                         bpix,
 897                         le16_to_cpu(bmp->header.bit_count));
 898
 899                 return 1;
 900         }
 901
 902         debug("Display-bmp: %d x %d  with %d colors\n",
 903                 (int)width, (int)height, (int)colors);
 904
 905 #if !defined(CONFIG_MCC200)
 906         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 907         if (bmp_bpix == 8) {
 908                 cmap = configuration_get_cmap();
 909                 cmap_base = cmap;
 910
 911                 /* Set color map */
 912                 for (i = 0; i < colors; ++i) {
 913                         bmp_color_table_entry_t cte = bmp->color_table[i];
 914 #if !defined(CONFIG_ATMEL_LCD)
 915                         ushort colreg =
 916                                 ( ((cte.red)   << 8) & 0xf800) |
 917                                 ( ((cte.green) << 3) & 0x07e0) |
 918                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 919 #ifdef CONFIG_SYS_INVERT_COLORS
 920                         *cmap = 0xffff - colreg;
 921 #else
 922                         *cmap = colreg;
 923 #endif
 924 #if defined(CONFIG_MPC823)
 925                         cmap--;
 926 #else
 927                         cmap++;
 928 #endif
 929 #else /* CONFIG_ATMEL_LCD */
 930                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 931 #endif
 932                 }
 933         }
 934 #endif
 935
 936         /*
 937          *  BMP format for Monochrome assumes that the state of a
 938          * pixel is described on a per Bit basis, not per Byte.
 939          *  So, in case of Monochrome BMP we should align widths
 940          * on a byte boundary and convert them from Bit to Byte
 941          * units.
 942          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 943          * their own ways, so make the converting to be MCC200
 944          * specific.
 945          */
 946 #if defined(CONFIG_MCC200)
 947         if (bpix == 1) {
 948                 width = ((width + 7) & ~7) >> 3;
 949                 x     = ((x + 7) & ~7) >> 3;
 950                 pwidth= ((pwidth + 7) & ~7) >> 3;
 951         }
 952 #endif
 953
 954         padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
 955
 956 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 957         splash_align_axis(&x, pwidth, width);
 958         splash_align_axis(&y, panel_info.vl_row, height);
 959 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 960
 961         if ((x + width) > pwidth)
 962                 width = pwidth - x;
 963         if ((y + height) > panel_info.vl_row)
 964                 height = panel_info.vl_row - y;
 965
 966         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 967         fb   = (uchar *) (lcd_base +
 968                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 969
 970         switch (bmp_bpix) {
 971         case 1: /* pass through */
 972         case 8:
 973 #ifdef CONFIG_LCD_BMP_RLE8
 974                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 975                         if (bpix != 16) {
 976                                 /* TODO implement render code for bpix != 16 */
 977                                 printf("Error: only support 16 bpix");
 978                                 return 1;
 979                         }
 980                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 981                         break;
 982                 }
 983 #endif
 984
 985                 if (bpix != 16)
 986                         byte_width = width;
 987                 else
 988                         byte_width = width * 2;
 989
 990                 for (i = 0; i < height; ++i) {
 991                         WATCHDOG_RESET();
 992                         for (j = 0; j < width; j++) {
 993                                 if (bpix != 16) {
 994                                         FB_PUT_BYTE(fb, bmap);
 995                                 } else {
 996                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 997                                         fb += sizeof(uint16_t) / sizeof(*fb);
 998                                 }
 999                         }
1000                         bmap += (padded_width - width);
1001                         fb   -= (byte_width + lcd_line_length);
1002                 }
1003                 break;
1004
1005 #if defined(CONFIG_BMP_16BPP)
1006         case 16:
1007                 for (i = 0; i < height; ++i) {
1008                         WATCHDOG_RESET();
1009                         for (j = 0; j < width; j++)
1010                                 fb_put_word(&fb, &bmap);
1011
1012                         bmap += (padded_width - width) * 2;
1013                         fb   -= (width * 2 + lcd_line_length);
1014                 }
1015                 break;
1016 #endif /* CONFIG_BMP_16BPP */
1017
1018 #if defined(CONFIG_BMP_32BPP)
1019         case 32:
1020                 for (i = 0; i < height; ++i) {
1021                         for (j = 0; j < width; j++) {
1022                                 *(fb++) = *(bmap++);
1023                                 *(fb++) = *(bmap++);
1024                                 *(fb++) = *(bmap++);
1025                                 *(fb++) = *(bmap++);
1026                         }
1027                         fb  -= (lcd_line_length + width * (bpix / 8));
1028                 }
1029                 break;
1030 #endif /* CONFIG_BMP_32BPP */
1031         default:
1032                 break;
1033         };
1034
1035         lcd_sync();
1036         return 0;
1037 }
1038 #endif
1039
1040 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1041 static inline int splash_screen_prepare(void)
1042 {
1043         return board_splash_screen_prepare();
1044 }
1045 #else
1046 static inline int splash_screen_prepare(void)
1047 {
1048         return 0;
1049 }
1050 #endif
1051
1052 static void *lcd_logo(void)
1053 {
1054 #ifdef CONFIG_SPLASH_SCREEN
1055         char *s;
1056         ulong addr;
1057         static int do_splash = 1;
1058
1059         if (do_splash && (s = getenv("splashimage")) != NULL) {
1060                 int x = 0, y = 0;
1061                 do_splash = 0;
1062
1063                 if (splash_screen_prepare())
1064                         return (void *)gd->fb_base;
1065
1066                 addr = simple_strtoul (s, NULL, 16);
1067 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1068                 s = getenv("splashpos");
1069                 if (s != NULL) {
1070                         if (s[0] == 'm')
1071                                 x = BMP_ALIGN_CENTER;
1072                         else
1073                                 x = simple_strtol(s, NULL, 0);
1074
1075                         s = strchr(s + 1, ',');
1076                         if (s != NULL) {
1077                                 if (s[1] == 'm')
1078                                         y = BMP_ALIGN_CENTER;
1079                                 else
1080                                         y = simple_strtol (s + 1, NULL, 0);
1081                         }
1082                 }
1083 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1084
1085                 if (bmp_display(addr, x, y) == 0)
1086                         return (void *)lcd_base;
1087         }
1088 #endif /* CONFIG_SPLASH_SCREEN */
1089
1090         bitmap_plot(0, 0);
1091
1092 #ifdef CONFIG_LCD_INFO
1093         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1094         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1095         lcd_show_board_info();
1096 #endif /* CONFIG_LCD_INFO */
1097
1098 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1099         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1100 #else
1101         return (void *)lcd_base;
1102 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1103 }
1104
1105 #ifdef CONFIG_SPLASHIMAGE_GUARD
1106 static int on_splashimage(const char *name, const char *value, enum env_op op,
1107         int flags)
1108 {
1109         ulong addr;
1110         int aligned;
1111
1112         if (op == env_op_delete)
1113                 return 0;
1114
1115         addr = simple_strtoul(value, NULL, 16);
1116         /* See README.displaying-bmps */
1117         aligned = (addr % 4 == 2);
1118         if (!aligned) {
1119                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1120                 return -1;
1121         }
1122
1123         return 0;
1124 }
1125
1126 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1127 #endif
1128
1129 void lcd_position_cursor(unsigned col, unsigned row)
1130 {
1131         console_col = min(col, CONSOLE_COLS - 1);
1132         console_row = min(row, CONSOLE_ROWS - 1);
1133 }
1134
1135 int lcd_get_pixel_width(void)
1136 {
1137         return panel_info.vl_col;
1138 }
1139
1140 int lcd_get_pixel_height(void)
1141 {
1142         return panel_info.vl_row;
1143 }
1144
1145 int lcd_get_screen_rows(void)
1146 {
1147         return CONSOLE_ROWS;
1148 }
1149
1150 int lcd_get_screen_columns(void)
1151 {
1152         return CONSOLE_COLS;
1153 }
1154
1155 /************************************************************************/
1156 /************************************************************************/