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         void *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 = 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_COLOR24
 278                 ulong *d = dest;
 279 #elif LCD_BPP == LCD_COLOR16
 280                 ushort *d = dest;
 281 #else
 282                 uchar *d = dest;
 283 #endif
 284
 285 #if LCD_BPP == LCD_MONOCHROME
 286                 uchar rest = *d & -(1 << (8-off));
 287                 uchar sym;
 288 #endif
 289                 for (i = 0; i < count; ++i) {
 290                         uchar c, bits;
 291
 292                         c = *s++;
 293                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 294
 295 #if LCD_BPP == LCD_MONOCHROME
 296                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 297                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 298
 299                         *d++ = rest | (sym >> off);
 300                         rest = sym << (8-off);
 301 #else
 302                         for (c = 0; c < 8; ++c) {
 303                                 *d++ = (bits & 0x80) ?
 304                                                 lcd_color_fg : lcd_color_bg;
 305                                 bits <<= 1;
 306                         }
 307 #endif
 308                 }
 309 #if LCD_BPP == LCD_MONOCHROME
 310                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 311 #endif
 312         }
 313 }
 314
 315 /*----------------------------------------------------------------------*/
 316
 317 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 318 {
 319         lcd_drawchars(x, y, s, strlen((char *)s));
 320 }
 321
 322 /*----------------------------------------------------------------------*/
 323
 324 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 325 {
 326         lcd_drawchars(x, y, &c, 1);
 327 }
 328
 329 /************************************************************************/
 330 /**  Small utility to check that you got the colours right              */
 331 /************************************************************************/
 332 #ifdef LCD_TEST_PATTERN
 333
 334 #define N_BLK_VERT      2
 335 #define N_BLK_HOR       3
 336
 337 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 338         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 339         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 340 };
 341
 342 #if LCD_BPP == LCD_COLOR8
 343 typedef uchar pix_t;
 344 #elif LCD_BPP == LCD_COLOR16
 345 typedef ushort pix_t;
 346 #elif LCD_BPP == LCD_COLOR24
 347 typedef ulong pix_t;
 348 #else
 349 #error Unsupported pixelformat
 350 #endif
 351
 352 static void test_pattern(void)
 353 {
 354         ushort v_max  = panel_info.vl_row;
 355         ushort h_max  = panel_info.vl_col;
 356         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 357         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 358         ushort v, h;
 359         pix_t *pix = lcd_base;
 360
 361         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 362                 h_max, v_max, h_step, v_step);
 363
 364         /* WARNING: Code silently assumes 8bit/pixel */
 365         for (v = 0; v < v_max; ++v) {
 366                 uchar iy = v / v_step;
 367                 for (h = 0; h < h_max; ++h) {
 368                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 369                         *pix++ = test_colors[ix];
 370                 }
 371         }
 372 }
 373 #endif /* LCD_TEST_PATTERN */
 374
 375
 376 /************************************************************************/
 377 /* ** GENERIC Initialization Routines                                   */
 378 /************************************************************************/
 379
 380 int lcd_get_size(int *line_length)
 381 {
 382         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 383         return *line_length * panel_info.vl_row;
 384 }
 385
 386 int drv_lcd_init(void)
 387 {
 388         struct stdio_dev lcddev;
 389         int rc;
 390
 391         lcd_base = (void *)gd->fb_base;
 392
 393         lcd_get_size(&lcd_line_length);
 394
 395         lcd_init(lcd_base);             /* LCD initialization */
 396
 397         /* Device initialization */
 398         memset(&lcddev, 0, sizeof(lcddev));
 399
 400         strcpy(lcddev.name, "lcd");
 401         lcddev.ext   = 0;                       /* No extensions */
 402         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 403         lcddev.putc  = lcd_putc;                /* 'putc' function */
 404         lcddev.puts  = lcd_puts;                /* 'puts' function */
 405
 406         rc = stdio_register (&lcddev);
 407
 408         return (rc == 0) ? 1 : rc;
 409 }
 410
 411 /*----------------------------------------------------------------------*/
 412 void lcd_clear(void)
 413 {
 414 #if LCD_BPP == LCD_MONOCHROME
 415         /* Setting the palette */
 416         lcd_initcolregs();
 417
 418 #elif LCD_BPP == LCD_COLOR8
 419         /* Setting the palette */
 420         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 421         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 422         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 423         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 424         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 425         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 426         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 427         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 428         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 429 #endif
 430
 431 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 432         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 433         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 434 #else
 435         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 436         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 437 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 438
 439 #ifdef  LCD_TEST_PATTERN
 440         test_pattern();
 441 #else
 442         /* set framebuffer to background color */
 443         memset((char *)lcd_base,
 444                 COLOR_MASK(lcd_getbgcolor()),
 445                 lcd_line_length*panel_info.vl_row);
 446 #endif
 447         /* Paint the logo and retrieve LCD base address */
 448         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 449         lcd_console_address = lcd_logo();
 450
 451         console_col = 0;
 452         console_row = 0;
 453         lcd_sync();
 454 }
 455
 456 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 457                         char *const argv[])
 458 {
 459         lcd_clear();
 460         return 0;
 461 }
 462
 463 U_BOOT_CMD(
 464         cls,    1,      1,      do_lcd_clear,
 465         "clear screen",
 466         ""
 467 );
 468
 469 /*----------------------------------------------------------------------*/
 470
 471 static int lcd_init(void *lcdbase)
 472 {
 473         /* Initialize the lcd controller */
 474         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 475                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 476                 lcdbase);
 477
 478         lcd_ctrl_init(lcdbase);
 479         lcd_is_enabled = 1;
 480         lcd_clear();
 481         lcd_enable();
 482
 483         /* Initialize the console */
 484         console_col = 0;
 485 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 486         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 487 #else
 488         console_row = 1;        /* leave 1 blank line below logo */
 489 #endif
 490
 491         return 0;
 492 }
 493
 494
 495 /************************************************************************/
 496 /* ** ROM capable initialization part - needed to reserve FB memory     */
 497 /************************************************************************/
 498 /*
 499  * This is called early in the system initialization to grab memory
 500  * for the LCD controller.
 501  * Returns new address for monitor, after reserving LCD buffer memory
 502  *
 503  * Note that this is running from ROM, so no write access to global data.
 504  */
 505 ulong lcd_setmem(ulong addr)
 506 {
 507         ulong size;
 508         int line_length;
 509
 510         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 511                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 512
 513         size = lcd_get_size(&line_length);
 514
 515         /* Round up to nearest full page, or MMU section if defined */
 516         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 517         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 518
 519         /* Allocate pages for the frame buffer. */
 520         addr -= size;
 521
 522         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 523
 524         return addr;
 525 }
 526
 527 /*----------------------------------------------------------------------*/
 528
 529 static void lcd_setfgcolor(int color)
 530 {
 531         lcd_color_fg = color;
 532 }
 533
 534 /*----------------------------------------------------------------------*/
 535
 536 static void lcd_setbgcolor(int color)
 537 {
 538         lcd_color_bg = color;
 539 }
 540
 541 /*----------------------------------------------------------------------*/
 542
 543 #ifdef  NOT_USED_SO_FAR
 544 static int lcd_getfgcolor(void)
 545 {
 546         return lcd_color_fg;
 547 }
 548 #endif  /* NOT_USED_SO_FAR */
 549
 550 /*----------------------------------------------------------------------*/
 551
 552 static inline int lcd_getbgcolor(void)
 553 {
 554         return lcd_color_bg;
 555 }
 556
 557 /*----------------------------------------------------------------------*/
 558
 559 /************************************************************************/
 560 /* ** Chipset depending Bitmap / Logo stuff...                          */
 561 /************************************************************************/
 562 static inline ushort *configuration_get_cmap(void)
 563 {
 564 #if defined CONFIG_CPU_PXA
 565         struct pxafb_info *fbi = &panel_info.pxa;
 566         return (ushort *)fbi->palette;
 567 #elif defined(CONFIG_MPC823)
 568         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 569         cpm8xx_t *cp = &(immr->im_cpm);
 570         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 571 #elif defined(CONFIG_ATMEL_LCD)
 572         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 573 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 574         return panel_info.cmap;
 575 #else
 576 #if defined(CONFIG_LCD_LOGO)
 577         return bmp_logo_palette;
 578 #else
 579         return NULL;
 580 #endif
 581 #endif
 582 }
 583
 584 #ifdef CONFIG_LCD_LOGO
 585 void bitmap_plot(int x, int y)
 586 {
 587 #ifdef CONFIG_ATMEL_LCD
 588         uint *cmap = (uint *)bmp_logo_palette;
 589 #else
 590         ushort *cmap = (ushort *)bmp_logo_palette;
 591 #endif
 592         ushort i, j;
 593         uchar *bmap;
 594         uchar *fb;
 595         ushort *fb16;
 596 #if defined(CONFIG_MPC823)
 597         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 598         cpm8xx_t *cp = &(immr->im_cpm);
 599 #endif
 600
 601         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 602                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 603                 ARRAY_SIZE(bmp_logo_palette));
 604
 605         bmap = &bmp_logo_bitmap[0];
 606         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 607
 608         if (NBITS(panel_info.vl_bpix) < 12) {
 609                 /* Leave room for default color map
 610                  * default case: generic system with no cmap (most likely 16bpp)
 611                  * cmap was set to the source palette, so no change is done.
 612                  * This avoids even more ifdefs in the next stanza
 613                  */
 614 #if defined(CONFIG_MPC823)
 615                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 616 #elif defined(CONFIG_ATMEL_LCD)
 617                 cmap = (uint *)configuration_get_cmap();
 618 #else
 619                 cmap = configuration_get_cmap();
 620 #endif
 621
 622                 WATCHDOG_RESET();
 623
 624                 /* Set color map */
 625                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 626                         ushort colreg = bmp_logo_palette[i];
 627 #ifdef CONFIG_ATMEL_LCD
 628                         uint lut_entry;
 629 #ifdef CONFIG_ATMEL_LCD_BGR555
 630                         lut_entry = ((colreg & 0x000F) << 11) |
 631                                         ((colreg & 0x00F0) <<  2) |
 632                                         ((colreg & 0x0F00) >>  7);
 633 #else /* CONFIG_ATMEL_LCD_RGB565 */
 634                         lut_entry = ((colreg & 0x000F) << 1) |
 635                                         ((colreg & 0x00F0) << 3) |
 636                                         ((colreg & 0x0F00) << 4);
 637 #endif
 638                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 639                         cmap++;
 640 #else /* !CONFIG_ATMEL_LCD */
 641 #ifdef  CONFIG_SYS_INVERT_COLORS
 642                         *cmap++ = 0xffff - colreg;
 643 #else
 644                         *cmap++ = colreg;
 645 #endif
 646 #endif /* CONFIG_ATMEL_LCD */
 647                 }
 648
 649                 WATCHDOG_RESET();
 650
 651                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 652                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 653                         bmap += BMP_LOGO_WIDTH;
 654                         fb   += panel_info.vl_col;
 655                 }
 656         } else if (NBITS(panel_info.vl_bpix) == 16) {
 657                 u16 col16;
 658                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 659                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 660                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 661                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 662                                 fb16[j] =
 663                                         ((col16 & 0x000F) << 1) |
 664                                         ((col16 & 0x00F0) << 3) |
 665                                         ((col16 & 0x0F00) << 4);
 666                                 }
 667                         bmap += BMP_LOGO_WIDTH;
 668                         fb16 += panel_info.vl_col;
 669                 }
 670         } else { /* true color mode */
 671                 u16 col16;
 672                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 673
 674                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 675                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 676                                 col16 = bmp_logo_palette[bmap[j] - 16];
 677                                 fb32[j] =
 678                                         ((col16 & 0x000F) << 4) |
 679                                         ((col16 & 0x00F0) << 8) |
 680                                         ((col16 & 0x0F00) << 12);
 681                                 }
 682                         bmap += BMP_LOGO_WIDTH;
 683                         fb32 += panel_info.vl_col;
 684                 }
 685         }
 686
 687         WATCHDOG_RESET();
 688         lcd_sync();
 689 }
 690 #else
 691 static inline void bitmap_plot(int x, int y) {}
 692 #endif /* CONFIG_LCD_LOGO */
 693
 694 /*----------------------------------------------------------------------*/
 695 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 696 /*
 697  * Display the BMP file located at address bmp_image.
 698  * Only uncompressed.
 699  */
 700
 701 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 702 #define BMP_ALIGN_CENTER        0x7FFF
 703
 704 static void splash_align_axis(int *axis, unsigned long panel_size,
 705                                         unsigned long picture_size)
 706 {
 707         unsigned long panel_picture_delta = panel_size - picture_size;
 708         unsigned long axis_alignment;
 709
 710         if (*axis == BMP_ALIGN_CENTER)
 711                 axis_alignment = panel_picture_delta / 2;
 712         else if (*axis < 0)
 713                 axis_alignment = panel_picture_delta + *axis + 1;
 714         else
 715                 return;
 716
 717         *axis = max(0, axis_alignment);
 718 }
 719 #endif
 720
 721
 722 #ifdef CONFIG_LCD_BMP_RLE8
 723
 724 #define BMP_RLE8_ESCAPE         0
 725 #define BMP_RLE8_EOL            0
 726 #define BMP_RLE8_EOBMP          1
 727 #define BMP_RLE8_DELTA          2
 728
 729 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 730                                   int cnt)
 731 {
 732         while (cnt > 0) {
 733                 *(*fbp)++ = cmap[*bmap++];
 734                 cnt--;
 735         }
 736 }
 737
 738 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 739 {
 740         ushort *fb = *fbp;
 741         int cnt_8copy = cnt >> 3;
 742
 743         cnt -= cnt_8copy << 3;
 744         while (cnt_8copy > 0) {
 745                 *fb++ = c;
 746                 *fb++ = c;
 747                 *fb++ = c;
 748                 *fb++ = c;
 749                 *fb++ = c;
 750                 *fb++ = c;
 751                 *fb++ = c;
 752                 *fb++ = c;
 753                 cnt_8copy--;
 754         }
 755         while (cnt > 0) {
 756                 *fb++ = c;
 757                 cnt--;
 758         }
 759         (*fbp) = fb;
 760 }
 761
 762 /*
 763  * Do not call this function directly, must be called from
 764  * lcd_display_bitmap.
 765  */
 766 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 767                                     int x_off, int y_off)
 768 {
 769         uchar *bmap;
 770         ulong width, height;
 771         ulong cnt, runlen;
 772         int x, y;
 773         int decode = 1;
 774
 775         width = le32_to_cpu(bmp->header.width);
 776         height = le32_to_cpu(bmp->header.height);
 777         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 778
 779         x = 0;
 780         y = height - 1;
 781
 782         while (decode) {
 783                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 784                         switch (bmap[1]) {
 785                         case BMP_RLE8_EOL:
 786                                 /* end of line */
 787                                 bmap += 2;
 788                                 x = 0;
 789                                 y--;
 790                                 /* 16bpix, 2-byte per pixel, width should *2 */
 791                                 fb -= (width * 2 + lcd_line_length);
 792                                 break;
 793                         case BMP_RLE8_EOBMP:
 794                                 /* end of bitmap */
 795                                 decode = 0;
 796                                 break;
 797                         case BMP_RLE8_DELTA:
 798                                 /* delta run */
 799                                 x += bmap[2];
 800                                 y -= bmap[3];
 801                                 /* 16bpix, 2-byte per pixel, x should *2 */
 802                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 803                                         * lcd_line_length + (x + x_off) * 2);
 804                                 bmap += 4;
 805                                 break;
 806                         default:
 807                                 /* unencoded run */
 808                                 runlen = bmap[1];
 809                                 bmap += 2;
 810                                 if (y < height) {
 811                                         if (x < width) {
 812                                                 if (x + runlen > width)
 813                                                         cnt = width - x;
 814                                                 else
 815                                                         cnt = runlen;
 816                                                 draw_unencoded_bitmap(
 817                                                         (ushort **)&fb,
 818                                                         bmap, cmap, cnt);
 819                                         }
 820                                         x += runlen;
 821                                 }
 822                                 bmap += runlen;
 823                                 if (runlen & 1)
 824                                         bmap++;
 825                         }
 826                 } else {
 827                         /* encoded run */
 828                         if (y < height) {
 829                                 runlen = bmap[0];
 830                                 if (x < width) {
 831                                         /* aggregate the same code */
 832                                         while (bmap[0] == 0xff &&
 833                                                bmap[2] != BMP_RLE8_ESCAPE &&
 834                                                bmap[1] == bmap[3]) {
 835                                                 runlen += bmap[2];
 836                                                 bmap += 2;
 837                                         }
 838                                         if (x + runlen > width)
 839                                                 cnt = width - x;
 840                                         else
 841                                                 cnt = runlen;
 842                                         draw_encoded_bitmap((ushort **)&fb,
 843                                                 cmap[bmap[1]], cnt);
 844                                 }
 845                                 x += runlen;
 846                         }
 847                         bmap += 2;
 848                 }
 849         }
 850 }
 851 #endif
 852
 853 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 854 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 855 #else
 856 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 857 #endif
 858
 859 #if defined(CONFIG_BMP_16BPP)
 860 #if defined(CONFIG_ATMEL_LCD_BGR555)
 861 static inline void fb_put_word(uchar **fb, uchar **from)
 862 {
 863         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 864         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 865         *from += 2;
 866 }
 867 #else
 868 static inline void fb_put_word(uchar **fb, uchar **from)
 869 {
 870         *(*fb)++ = *(*from)++;
 871         *(*fb)++ = *(*from)++;
 872 }
 873 #endif
 874 #endif /* CONFIG_BMP_16BPP */
 875
 876 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 877 {
 878 #if !defined(CONFIG_MCC200)
 879         ushort *cmap = NULL;
 880 #endif
 881         ushort *cmap_base = NULL;
 882         ushort i, j;
 883         uchar *fb;
 884         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 885         uchar *bmap;
 886         ushort padded_width;
 887         unsigned long width, height;
 888         unsigned long pwidth = panel_info.vl_col;
 889         unsigned long long colors;
 890         unsigned bpix, bmp_bpix;
 891
 892         if (!bmp || !((bmp->header.signature[0] == 'B') &&
 893                 (bmp->header.signature[1] == 'M'))) {
 894                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 895
 896                 return 1;
 897         }
 898
 899         width = le32_to_cpu(bmp->header.width);
 900         height = le32_to_cpu(bmp->header.height);
 901         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 902         colors = 1ULL << bmp_bpix;
 903
 904         bpix = NBITS(panel_info.vl_bpix);
 905
 906         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
 907                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 908                         bpix, bmp_bpix);
 909
 910                 return 1;
 911         }
 912
 913         /* We support displaying 8bpp BMPs on 16bpp or 32bpp LCDs */
 914         if (bpix != bmp_bpix && (bmp_bpix != 8 || (bpix != 16 && bpix != 32))) {
 915                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 916                         bpix,
 917                         le16_to_cpu(bmp->header.bit_count));
 918
 919                 return 1;
 920         }
 921
 922         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 923                 width, height, colors);
 924
 925 #if !defined(CONFIG_MCC200)
 926         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 927         if (bmp_bpix == 8) {
 928                 cmap = configuration_get_cmap();
 929                 cmap_base = cmap;
 930
 931                 /* Set color map */
 932                 for (i = 0; i < colors; ++i) {
 933                         bmp_color_table_entry_t cte = bmp->color_table[i];
 934 #if !defined(CONFIG_ATMEL_LCD)
 935                         ushort colreg =
 936                                 ( ((cte.red)   << 8) & 0xf800) |
 937                                 ( ((cte.green) << 3) & 0x07e0) |
 938                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 939 #ifdef CONFIG_SYS_INVERT_COLORS
 940                         *cmap = 0xffff - colreg;
 941 #else
 942                         *cmap = colreg;
 943 #endif
 944 #if defined(CONFIG_MPC823)
 945                         cmap--;
 946 #else
 947                         cmap++;
 948 #endif
 949 #else /* CONFIG_ATMEL_LCD */
 950                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 951 #endif
 952                 }
 953         }
 954 #endif
 955
 956         /*
 957          *  BMP format for Monochrome assumes that the state of a
 958          * pixel is described on a per Bit basis, not per Byte.
 959          *  So, in case of Monochrome BMP we should align widths
 960          * on a byte boundary and convert them from Bit to Byte
 961          * units.
 962          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 963          * their own ways, so make the converting to be MCC200
 964          * specific.
 965          */
 966 #if defined(CONFIG_MCC200)
 967         if (bpix == 1) {
 968                 width = ALIGN(width, 8) >> 3;
 969                 x     = ALIGN(x, 8) >> 3;
 970                 pwidth= ALIGN(pwidth, 8) >> 3;
 971         }
 972 #endif
 973
 974         padded_width = ALIGN(width, 4);
 975
 976 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 977         splash_align_axis(&x, pwidth, width);
 978         splash_align_axis(&y, panel_info.vl_row, height);
 979 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 980         bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
 981
 982         if ((x + width) > pwidth)
 983                 width = max(pwidth - x, pwidth);
 984         if ((y + height) > panel_info.vl_row) {
 985                 height = panel_info.vl_row - y;
 986                 bmap += (panel_info.vl_row - y) * padded_width;
 987         }
 988
 989         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 990         fb   = (uchar *) (lcd_base +
 991                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 992
 993         switch (bmp_bpix) {
 994         case 1: /* pass through */
 995         case 8:
 996 #ifdef CONFIG_LCD_BMP_RLE8
 997                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 998                         if (bpix != 16) {
 999                                 /* TODO implement render code for bpix != 16 */
1000                                 printf("Error: only support 16 bpix");
1001                                 return 1;
1002                         }
1003                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1004                         break;
1005                 }
1006 #endif
1007
1008                 for (i = 0; i < height; ++i) {
1009                         WATCHDOG_RESET();
1010                         for (j = 0; j < width; j++) {
1011                                 if (bpix == 32) {
1012                                         int i = *bmap++;
1013
1014                                         fb[3] = 0; /* T */
1015                                         fb[0] = bmp->color_table[i].blue;
1016                                         fb[1] = bmp->color_table[i].green;
1017                                         fb[2] = bmp->color_table[i].red;
1018                                         fb += sizeof(uint32_t) / sizeof(*fb);
1019                                 } else if (bpix == 16) {
1020                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1021                                         fb += sizeof(uint16_t) / sizeof(*fb);
1022                                 } else {
1023                                         FB_PUT_BYTE(fb, bmap);
1024                                 }
1025                         }
1026                         bmap += padded_width - width;
1027                         fb   -= width + lcd_line_length;
1028                 }
1029                 break;
1030
1031 #if defined(CONFIG_BMP_16BPP)
1032         case 16:
1033                 for (i = 0; i < height; ++i) {
1034                         WATCHDOG_RESET();
1035                         for (j = 0; j < width; j++)
1036                                 fb_put_word(&fb, &bmap);
1037
1038                         bmap += (padded_width - width) * 2;
1039                         fb   -= width * 2 + lcd_line_length;
1040                 }
1041                 break;
1042 #endif /* CONFIG_BMP_16BPP */
1043         case 32:
1044                 for (i = 0; i < height; ++i) {
1045                         WATCHDOG_RESET();
1046                         for (j = 0; j < width; j++) {
1047                                 fb[3] = *bmap++; /* T */
1048                                 fb[0] = *bmap++; /* B */
1049                                 fb[1] = *bmap++; /* G */
1050                                 fb[2] = *bmap++; /* R */
1051                                 fb += 4;
1052                         }
1053                         bmap += (padded_width - width) * 4;
1054                         fb   -= width * 4 + lcd_line_length;
1055                 }
1056                 break;
1057         };
1058
1059         return 0;
1060 }
1061 #endif
1062
1063 static void *lcd_logo(void)
1064 {
1065 #ifdef CONFIG_SPLASH_SCREEN
1066         char *s;
1067         ulong addr;
1068         static int do_splash = 1;
1069
1070         if (do_splash && (s = getenv("splashimage")) != NULL) {
1071                 int x = 0, y = 0;
1072                 char *end;
1073
1074                 do_splash = 0;
1075
1076                 addr = simple_strtoul (s, &end, 16);
1077                 if (addr == 0 || *end != '\0')
1078                         return lcd_base;
1079 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1080                 s = getenv("splashpos");
1081                 if (s != NULL) {
1082                         if (s[0] == 'm')
1083                                 x = BMP_ALIGN_CENTER;
1084                         else
1085                                 x = simple_strtol(s, NULL, 0);
1086
1087                         s = strchr(s + 1, ',');
1088                         if (s != NULL) {
1089                                 if (s[1] == 'm')
1090                                         y = BMP_ALIGN_CENTER;
1091                                 else
1092                                         y = simple_strtol (s + 1, NULL, 0);
1093                         }
1094                 }
1095 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1096
1097                 if (bmp_display(addr, x, y) == 0)
1098                         return (void *)lcd_base;
1099         }
1100 #endif /* CONFIG_SPLASH_SCREEN */
1101
1102         bitmap_plot(0, 0);
1103
1104 #ifdef CONFIG_LCD_INFO
1105         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1106         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1107         lcd_show_board_info();
1108 #endif /* CONFIG_LCD_INFO */
1109
1110 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1111         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
1112 #else
1113         return lcd_base;
1114 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1115 }
1116
1117 void lcd_position_cursor(unsigned col, unsigned row)
1118 {
1119         console_col = min(col, CONSOLE_COLS - 1);
1120         console_row = min(row, CONSOLE_ROWS - 1);
1121 }
1122
1123 int lcd_get_pixel_width(void)
1124 {
1125         return panel_info.vl_col;
1126 }
1127
1128 int lcd_get_pixel_height(void)
1129 {
1130         return panel_info.vl_row;
1131 }
1132
1133 int lcd_get_screen_rows(void)
1134 {
1135         return CONSOLE_ROWS;
1136 }
1137
1138 int lcd_get_screen_columns(void)
1139 {
1140         return CONSOLE_COLS;
1141 }
1142
1143 /************************************************************************/
1144 /************************************************************************/