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_PXA250)
  45 #include <asm/byteorder.h>
  46 #endif
  47
  48 #if defined(CONFIG_MPC823)
  49 #include <lcdvideo.h>
  50 #endif
  51
  52 #if defined(CONFIG_ATMEL_LCD)
  53 #include <atmel_lcdc.h>
  54 #endif
  55
  56 /************************************************************************/
  57 /* ** FONT DATA                                                         */
  58 /************************************************************************/
  59 #include <video_font.h>         /* Get font data, width and height      */
  60
  61 /************************************************************************/
  62 /* ** LOGO DATA                                                         */
  63 /************************************************************************/
  64 #ifdef CONFIG_LCD_LOGO
  65 # include <bmp_logo.h>          /* Get logo data, width and height      */
  66 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET)
  67 #  error Default Color Map overlaps with Logo Color Map
  68 # endif
  69 #endif
  70
  71 DECLARE_GLOBAL_DATA_PTR;
  72
  73 ulong lcd_setmem (ulong addr);
  74
  75 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count);
  76 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
  77 static inline void lcd_putc_xy (ushort x, ushort y, uchar  c);
  78
  79 static int lcd_init (void *lcdbase);
  80
  81 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
  82 static void *lcd_logo (void);
  83
  84 static int lcd_getbgcolor (void);
  85 static void lcd_setfgcolor (int color);
  86 static void lcd_setbgcolor (int color);
  87
  88 char lcd_is_enabled = 0;
  89
  90 #ifdef  NOT_USED_SO_FAR
  91 static void lcd_getcolreg (ushort regno,
  92                                 ushort *red, ushort *green, ushort *blue);
  93 static int lcd_getfgcolor (void);
  94 #endif  /* NOT_USED_SO_FAR */
  95
  96 /************************************************************************/
  97
  98 /*----------------------------------------------------------------------*/
  99
 100 static void console_scrollup (void)
 101 {
 102 #if 1
 103         /* Copy up rows ignoring the first one */
 104         memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
 105
 106         /* Clear the last one */
 107         memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
 108 #else
 109         /*
 110          * Poor attempt to optimize speed by moving "long"s.
 111          * But the code is ugly, and not a bit faster :-(
 112          */
 113         ulong *t = (ulong *)CONSOLE_ROW_FIRST;
 114         ulong *s = (ulong *)CONSOLE_ROW_SECOND;
 115         ulong    l = CONSOLE_SCROLL_SIZE / sizeof(ulong);
 116         uchar  c = lcd_color_bg & 0xFF;
 117         ulong val= (c<<24) | (c<<16) | (c<<8) | c;
 118
 119         while (l--)
 120                 *t++ = *s++;
 121
 122         t = (ulong *)CONSOLE_ROW_LAST;
 123         l = CONSOLE_ROW_SIZE / sizeof(ulong);
 124
 125         while (l-- > 0)
 126                 *t++ = val;
 127 #endif
 128 }
 129
 130 /*----------------------------------------------------------------------*/
 131
 132 static inline void console_back (void)
 133 {
 134         if (--console_col < 0) {
 135                 console_col = CONSOLE_COLS-1 ;
 136                 if (--console_row < 0) {
 137                         console_row = 0;
 138                 }
 139         }
 140
 141         lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
 142                      console_row * VIDEO_FONT_HEIGHT,
 143                      ' ');
 144 }
 145
 146 /*----------------------------------------------------------------------*/
 147
 148 static inline void console_newline (void)
 149 {
 150         ++console_row;
 151         console_col = 0;
 152
 153         /* Check if we need to scroll the terminal */
 154         if (console_row >= CONSOLE_ROWS) {
 155                 /* Scroll everything up */
 156                 console_scrollup () ;
 157                 --console_row;
 158         }
 159 }
 160
 161 /*----------------------------------------------------------------------*/
 162
 163 void lcd_putc (const char c)
 164 {
 165         if (!lcd_is_enabled) {
 166                 serial_putc(c);
 167                 return;
 168         }
 169
 170         switch (c) {
 171         case '\r':      console_col = 0;
 172                         return;
 173
 174         case '\n':      console_newline();
 175                         return;
 176
 177         case '\t':      /* Tab (8 chars alignment) */
 178                         console_col +=  8;
 179                         console_col &= ~7;
 180
 181                         if (console_col >= CONSOLE_COLS) {
 182                                 console_newline();
 183                         }
 184                         return;
 185
 186         case '\b':      console_back();
 187                         return;
 188
 189         default:        lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
 190                                      console_row * VIDEO_FONT_HEIGHT,
 191                                      c);
 192                         if (++console_col >= CONSOLE_COLS) {
 193                                 console_newline();
 194                         }
 195                         return;
 196         }
 197         /* NOTREACHED */
 198 }
 199
 200 /*----------------------------------------------------------------------*/
 201
 202 void lcd_puts (const char *s)
 203 {
 204         if (!lcd_is_enabled) {
 205                 serial_puts (s);
 206                 return;
 207         }
 208
 209         while (*s) {
 210                 lcd_putc (*s++);
 211         }
 212 }
 213
 214 /*----------------------------------------------------------------------*/
 215
 216 void lcd_printf(const char *fmt, ...)
 217 {
 218         va_list args;
 219         char buf[CONFIG_SYS_PBSIZE];
 220
 221         va_start(args, fmt);
 222         vsprintf(buf, fmt, args);
 223         va_end(args);
 224
 225         lcd_puts(buf);
 226 }
 227
 228 /************************************************************************/
 229 /* ** Low-Level Graphics Routines                                       */
 230 /************************************************************************/
 231
 232 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
 233 {
 234         uchar *dest;
 235         ushort off, row;
 236
 237         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 238         off  = x * (1 << LCD_BPP) % 8;
 239
 240         for (row=0;  row < VIDEO_FONT_HEIGHT;  ++row, dest += lcd_line_length)  {
 241                 uchar *s = str;
 242                 uchar *d = dest;
 243                 int i;
 244
 245 #if LCD_BPP == LCD_MONOCHROME
 246                 uchar rest = *d & -(1 << (8-off));
 247                 uchar sym;
 248 #endif
 249                 for (i=0; i<count; ++i) {
 250                         uchar c, bits;
 251
 252                         c = *s++;
 253                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 254
 255 #if LCD_BPP == LCD_MONOCHROME
 256                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 257                                (COLOR_MASK(lcd_color_bg) & ~bits);
 258
 259                         *d++ = rest | (sym >> off);
 260                         rest = sym << (8-off);
 261 #elif LCD_BPP == LCD_COLOR8
 262                         for (c=0; c<8; ++c) {
 263                                 *d++ = (bits & 0x80) ?
 264                                                 lcd_color_fg : lcd_color_bg;
 265                                 bits <<= 1;
 266                         }
 267 #elif LCD_BPP == LCD_COLOR16
 268                         for (c=0; c<16; ++c) {
 269                                 *d++ = (bits & 0x80) ?
 270                                                 lcd_color_fg : lcd_color_bg;
 271                                 bits <<= 1;
 272                         }
 273 #endif
 274                 }
 275 #if LCD_BPP == LCD_MONOCHROME
 276                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 277 #endif
 278         }
 279 }
 280
 281 /*----------------------------------------------------------------------*/
 282
 283 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
 284 {
 285 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 286         lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen ((char *)s));
 287 #else
 288         lcd_drawchars (x, y, s, strlen ((char *)s));
 289 #endif
 290 }
 291
 292 /*----------------------------------------------------------------------*/
 293
 294 static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
 295 {
 296 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 297         lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
 298 #else
 299         lcd_drawchars (x, y, &c, 1);
 300 #endif
 301 }
 302
 303 /************************************************************************/
 304 /**  Small utility to check that you got the colours right              */
 305 /************************************************************************/
 306 #ifdef LCD_TEST_PATTERN
 307
 308 #define N_BLK_VERT      2
 309 #define N_BLK_HOR       3
 310
 311 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 312         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 313         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 314 };
 315
 316 static void test_pattern (void)
 317 {
 318         ushort v_max  = panel_info.vl_row;
 319         ushort h_max  = panel_info.vl_col;
 320         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 321         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 322         ushort v, h;
 323         uchar *pix = (uchar *)lcd_base;
 324
 325         printf ("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 326                 h_max, v_max, h_step, v_step);
 327
 328         /* WARNING: Code silently assumes 8bit/pixel */
 329         for (v=0; v<v_max; ++v) {
 330                 uchar iy = v / v_step;
 331                 for (h=0; h<h_max; ++h) {
 332                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 333                         *pix++ = test_colors[ix];
 334                 }
 335         }
 336 }
 337 #endif /* LCD_TEST_PATTERN */
 338
 339
 340 /************************************************************************/
 341 /* ** GENERIC Initialization Routines                                   */
 342 /************************************************************************/
 343
 344 int drv_lcd_init (void)
 345 {
 346         struct stdio_dev lcddev;
 347         int rc;
 348
 349         lcd_base = (void *)(gd->fb_base);
 350
 351         lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
 352
 353         lcd_init (lcd_base);            /* LCD initialization */
 354
 355         /* Device initialization */
 356         memset (&lcddev, 0, sizeof (lcddev));
 357
 358         strcpy (lcddev.name, "lcd");
 359         lcddev.ext   = 0;                       /* No extensions */
 360         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 361         lcddev.putc  = lcd_putc;                /* 'putc' function */
 362         lcddev.puts  = lcd_puts;                /* 'puts' function */
 363
 364         rc = stdio_register (&lcddev);
 365
 366         return (rc == 0) ? 1 : rc;
 367 }
 368
 369 /*----------------------------------------------------------------------*/
 370 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 371 {
 372 #if LCD_BPP == LCD_MONOCHROME
 373         /* Setting the palette */
 374         lcd_initcolregs();
 375
 376 #elif LCD_BPP == LCD_COLOR8
 377         /* Setting the palette */
 378         lcd_setcolreg  (CONSOLE_COLOR_BLACK,       0,    0,    0);
 379         lcd_setcolreg  (CONSOLE_COLOR_RED,      0xFF,    0,    0);
 380         lcd_setcolreg  (CONSOLE_COLOR_GREEN,       0, 0xFF,    0);
 381         lcd_setcolreg  (CONSOLE_COLOR_YELLOW,   0xFF, 0xFF,    0);
 382         lcd_setcolreg  (CONSOLE_COLOR_BLUE,        0,    0, 0xFF);
 383         lcd_setcolreg  (CONSOLE_COLOR_MAGENTA,  0xFF,    0, 0xFF);
 384         lcd_setcolreg  (CONSOLE_COLOR_CYAN,        0, 0xFF, 0xFF);
 385         lcd_setcolreg  (CONSOLE_COLOR_GREY,     0xAA, 0xAA, 0xAA);
 386         lcd_setcolreg  (CONSOLE_COLOR_WHITE,    0xFF, 0xFF, 0xFF);
 387 #endif
 388
 389 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 390         lcd_setfgcolor (CONSOLE_COLOR_BLACK);
 391         lcd_setbgcolor (CONSOLE_COLOR_WHITE);
 392 #else
 393         lcd_setfgcolor (CONSOLE_COLOR_WHITE);
 394         lcd_setbgcolor (CONSOLE_COLOR_BLACK);
 395 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 396
 397 #ifdef  LCD_TEST_PATTERN
 398         test_pattern();
 399 #else
 400         /* set framebuffer to background color */
 401         memset ((char *)lcd_base,
 402                 COLOR_MASK(lcd_getbgcolor()),
 403                 lcd_line_length*panel_info.vl_row);
 404 #endif
 405         /* Paint the logo and retrieve LCD base address */
 406         debug ("[LCD] Drawing the logo...\n");
 407         lcd_console_address = lcd_logo ();
 408
 409         console_col = 0;
 410         console_row = 0;
 411
 412         return (0);
 413 }
 414
 415 U_BOOT_CMD(
 416         cls,    1,      1,      lcd_clear,
 417         "clear screen",
 418         ""
 419 );
 420
 421 /*----------------------------------------------------------------------*/
 422
 423 static int lcd_init (void *lcdbase)
 424 {
 425         /* Initialize the lcd controller */
 426         debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 427
 428         lcd_ctrl_init (lcdbase);
 429         lcd_is_enabled = 1;
 430         lcd_clear (NULL, 1, 1, NULL);   /* dummy args */
 431         lcd_enable ();
 432
 433         /* Initialize the console */
 434         console_col = 0;
 435 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 436         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 437 #else
 438         console_row = 1;        /* leave 1 blank line below logo */
 439 #endif
 440
 441         return 0;
 442 }
 443
 444
 445 /************************************************************************/
 446 /* ** ROM capable initialization part - needed to reserve FB memory     */
 447 /************************************************************************/
 448 /*
 449  * This is called early in the system initialization to grab memory
 450  * for the LCD controller.
 451  * Returns new address for monitor, after reserving LCD buffer memory
 452  *
 453  * Note that this is running from ROM, so no write access to global data.
 454  */
 455 ulong lcd_setmem (ulong addr)
 456 {
 457         ulong size;
 458         int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
 459
 460         debug ("LCD panel info: %d x %d, %d bit/pix\n",
 461                 panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
 462
 463         size = line_length * panel_info.vl_row;
 464
 465         /* Round up to nearest full page */
 466         size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 467
 468         /* Allocate pages for the frame buffer. */
 469         addr -= size;
 470
 471         debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 472
 473         return (addr);
 474 }
 475
 476 /*----------------------------------------------------------------------*/
 477
 478 static void lcd_setfgcolor (int color)
 479 {
 480 #ifdef CONFIG_ATMEL_LCD
 481         lcd_color_fg = color;
 482 #else
 483         lcd_color_fg = color & 0x0F;
 484 #endif
 485 }
 486
 487 /*----------------------------------------------------------------------*/
 488
 489 static void lcd_setbgcolor (int color)
 490 {
 491 #ifdef CONFIG_ATMEL_LCD
 492         lcd_color_bg = color;
 493 #else
 494         lcd_color_bg = color & 0x0F;
 495 #endif
 496 }
 497
 498 /*----------------------------------------------------------------------*/
 499
 500 #ifdef  NOT_USED_SO_FAR
 501 static int lcd_getfgcolor (void)
 502 {
 503         return lcd_color_fg;
 504 }
 505 #endif  /* NOT_USED_SO_FAR */
 506
 507 /*----------------------------------------------------------------------*/
 508
 509 static int lcd_getbgcolor (void)
 510 {
 511         return lcd_color_bg;
 512 }
 513
 514 /*----------------------------------------------------------------------*/
 515
 516 /************************************************************************/
 517 /* ** Chipset depending Bitmap / Logo stuff...                          */
 518 /************************************************************************/
 519 #ifdef CONFIG_LCD_LOGO
 520 void bitmap_plot (int x, int y)
 521 {
 522 #ifdef CONFIG_ATMEL_LCD
 523         uint *cmap;
 524 #else
 525         ushort *cmap;
 526 #endif
 527         ushort i, j;
 528         uchar *bmap;
 529         uchar *fb;
 530         ushort *fb16;
 531 #if defined(CONFIG_PXA250)
 532         struct pxafb_info *fbi = &panel_info.pxa;
 533 #elif defined(CONFIG_MPC823)
 534         volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 535         volatile cpm8xx_t *cp = &(immr->im_cpm);
 536 #endif
 537
 538         debug ("Logo: width %d  height %d  colors %d  cmap %d\n",
 539                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 540                 (int)(sizeof(bmp_logo_palette)/(sizeof(ushort))));
 541
 542         bmap = &bmp_logo_bitmap[0];
 543         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 544
 545         if (NBITS(panel_info.vl_bpix) < 12) {
 546                 /* Leave room for default color map */
 547 #if defined(CONFIG_PXA250)
 548                 cmap = (ushort *)fbi->palette;
 549 #elif defined(CONFIG_MPC823)
 550                 cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
 551 #elif defined(CONFIG_ATMEL_LCD)
 552                 cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
 553 #endif
 554
 555                 WATCHDOG_RESET();
 556
 557                 /* Set color map */
 558                 for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
 559                         ushort colreg = bmp_logo_palette[i];
 560 #ifdef CONFIG_ATMEL_LCD
 561                         uint lut_entry;
 562 #ifdef CONFIG_ATMEL_LCD_BGR555
 563                         lut_entry = ((colreg & 0x000F) << 11) |
 564                                     ((colreg & 0x00F0) <<  2) |
 565                                     ((colreg & 0x0F00) >>  7);
 566 #else /* CONFIG_ATMEL_LCD_RGB565 */
 567                         lut_entry = ((colreg & 0x000F) << 1) |
 568                                     ((colreg & 0x00F0) << 3) |
 569                                     ((colreg & 0x0F00) << 4);
 570 #endif
 571                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 572                         cmap++;
 573 #else /* !CONFIG_ATMEL_LCD */
 574 #ifdef  CONFIG_SYS_INVERT_COLORS
 575                         *cmap++ = 0xffff - colreg;
 576 #else
 577                         *cmap++ = colreg;
 578 #endif
 579 #endif /* CONFIG_ATMEL_LCD */
 580                 }
 581
 582                 WATCHDOG_RESET();
 583
 584                 for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
 585                         memcpy (fb, bmap, BMP_LOGO_WIDTH);
 586                         bmap += BMP_LOGO_WIDTH;
 587                         fb   += panel_info.vl_col;
 588                 }
 589         }
 590         else { /* true color mode */
 591                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 592                 for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
 593                         for (j=0; j<BMP_LOGO_WIDTH; j++) {
 594                                 fb16[j] = bmp_logo_palette[(bmap[j])];
 595                                 }
 596                         bmap += BMP_LOGO_WIDTH;
 597                         fb16 += panel_info.vl_col;
 598                 }
 599         }
 600
 601         WATCHDOG_RESET();
 602 }
 603 #endif /* CONFIG_LCD_LOGO */
 604
 605 /*----------------------------------------------------------------------*/
 606 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 607 /*
 608  * Display the BMP file located at address bmp_image.
 609  * Only uncompressed.
 610  */
 611
 612 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 613 #define BMP_ALIGN_CENTER        0x7FFF
 614 #endif
 615
 616 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 617 {
 618 #if !defined(CONFIG_MCC200)
 619         ushort *cmap = NULL;
 620 #endif
 621         ushort *cmap_base = NULL;
 622         ushort i, j;
 623         uchar *fb;
 624         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 625         uchar *bmap;
 626         ushort padded_line;
 627         unsigned long width, height, byte_width;
 628         unsigned long pwidth = panel_info.vl_col;
 629         unsigned colors, bpix, bmp_bpix;
 630         unsigned long compression;
 631 #if defined(CONFIG_PXA250)
 632         struct pxafb_info *fbi = &panel_info.pxa;
 633 #elif defined(CONFIG_MPC823)
 634         volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 635         volatile cpm8xx_t *cp = &(immr->im_cpm);
 636 #endif
 637
 638         if (!((bmp->header.signature[0]=='B') &&
 639                 (bmp->header.signature[1]=='M'))) {
 640                 printf ("Error: no valid bmp image at %lx\n", bmp_image);
 641                 return 1;
 642         }
 643
 644         width = le32_to_cpu (bmp->header.width);
 645         height = le32_to_cpu (bmp->header.height);
 646         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 647         colors = 1 << bmp_bpix;
 648         compression = le32_to_cpu (bmp->header.compression);
 649
 650         bpix = NBITS(panel_info.vl_bpix);
 651
 652         if ((bpix != 1) && (bpix != 8) && (bpix != 16)) {
 653                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 654                         bpix, bmp_bpix);
 655                 return 1;
 656         }
 657
 658         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 659         if (bpix != bmp_bpix && (bmp_bpix != 8 || bpix != 16)) {
 660                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 661                         bpix,
 662                         le16_to_cpu(bmp->header.bit_count));
 663                 return 1;
 664         }
 665
 666         debug ("Display-bmp: %d x %d  with %d colors\n",
 667                 (int)width, (int)height, (int)colors);
 668
 669 #if !defined(CONFIG_MCC200)
 670         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 671         if (bmp_bpix == 8) {
 672 #if defined(CONFIG_PXA250)
 673                 cmap = (ushort *)fbi->palette;
 674 #elif defined(CONFIG_MPC823)
 675                 cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
 676 #elif !defined(CONFIG_ATMEL_LCD)
 677                 cmap = panel_info.cmap;
 678 #endif
 679
 680                 cmap_base = cmap;
 681
 682                 /* Set color map */
 683                 for (i=0; i<colors; ++i) {
 684                         bmp_color_table_entry_t cte = bmp->color_table[i];
 685 #if !defined(CONFIG_ATMEL_LCD)
 686                         ushort colreg =
 687                                 ( ((cte.red)   << 8) & 0xf800) |
 688                                 ( ((cte.green) << 3) & 0x07e0) |
 689                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 690 #ifdef CONFIG_SYS_INVERT_COLORS
 691                         *cmap = 0xffff - colreg;
 692 #else
 693                         *cmap = colreg;
 694 #endif
 695 #if defined(CONFIG_MPC823)
 696                         cmap--;
 697 #else
 698                         cmap++;
 699 #endif
 700 #else /* CONFIG_ATMEL_LCD */
 701                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 702 #endif
 703                 }
 704         }
 705 #endif
 706
 707         /*
 708          *  BMP format for Monochrome assumes that the state of a
 709          * pixel is described on a per Bit basis, not per Byte.
 710          *  So, in case of Monochrome BMP we should align widths
 711          * on a byte boundary and convert them from Bit to Byte
 712          * units.
 713          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 714          * their own ways, so make the converting to be MCC200
 715          * specific.
 716          */
 717 #if defined(CONFIG_MCC200)
 718         if (bpix==1)
 719         {
 720                 width = ((width + 7) & ~7) >> 3;
 721                 x     = ((x + 7) & ~7) >> 3;
 722                 pwidth= ((pwidth + 7) & ~7) >> 3;
 723         }
 724 #endif
 725
 726         padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
 727
 728 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 729         if (x == BMP_ALIGN_CENTER)
 730                 x = max(0, (pwidth - width) / 2);
 731         else if (x < 0)
 732                 x = max(0, pwidth - width + x + 1);
 733
 734         if (y == BMP_ALIGN_CENTER)
 735                 y = max(0, (panel_info.vl_row - height) / 2);
 736         else if (y < 0)
 737                 y = max(0, panel_info.vl_row - height + y + 1);
 738 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 739
 740         if ((x + width)>pwidth)
 741                 width = pwidth - x;
 742         if ((y + height)>panel_info.vl_row)
 743                 height = panel_info.vl_row - y;
 744
 745         bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
 746         fb   = (uchar *) (lcd_base +
 747                 (y + height - 1) * lcd_line_length + x);
 748
 749         switch (bmp_bpix) {
 750         case 1: /* pass through */
 751         case 8:
 752                 if (bpix != 16)
 753                         byte_width = width;
 754                 else
 755                         byte_width = width * 2;
 756
 757                 for (i = 0; i < height; ++i) {
 758                         WATCHDOG_RESET();
 759                         for (j = 0; j < width; j++) {
 760                                 if (bpix != 16) {
 761 #if defined(CONFIG_PXA250) || defined(CONFIG_ATMEL_LCD)
 762                                         *(fb++) = *(bmap++);
 763 #elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 764                                         *(fb++) = 255 - *(bmap++);
 765 #endif
 766                                 } else {
 767                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 768                                         fb += sizeof(uint16_t) / sizeof(*fb);
 769                                 }
 770                         }
 771                         bmap += (width - padded_line);
 772                         fb   -= (byte_width + lcd_line_length);
 773                 }
 774                 break;
 775
 776 #if defined(CONFIG_BMP_16BPP)
 777         case 16:
 778                 for (i = 0; i < height; ++i) {
 779                         WATCHDOG_RESET();
 780                         for (j = 0; j < width; j++) {
 781 #if defined(CONFIG_ATMEL_LCD_BGR555)
 782                                 *(fb++) = ((bmap[0] & 0x1f) << 2) |
 783                                         (bmap[1] & 0x03);
 784                                 *(fb++) = (bmap[0] & 0xe0) |
 785                                         ((bmap[1] & 0x7c) >> 2);
 786                                 bmap += 2;
 787 #else
 788                                 *(fb++) = *(bmap++);
 789                                 *(fb++) = *(bmap++);
 790 #endif
 791                         }
 792                         bmap += (padded_line - width) * 2;
 793                         fb   -= (width * 2 + lcd_line_length);
 794                 }
 795                 break;
 796 #endif /* CONFIG_BMP_16BPP */
 797
 798         default:
 799                 break;
 800         };
 801
 802         return (0);
 803 }
 804 #endif
 805
 806 static void *lcd_logo (void)
 807 {
 808 #ifdef CONFIG_SPLASH_SCREEN
 809         char *s;
 810         ulong addr;
 811         static int do_splash = 1;
 812
 813         if (do_splash && (s = getenv("splashimage")) != NULL) {
 814                 int x = 0, y = 0;
 815                 do_splash = 0;
 816
 817                 addr = simple_strtoul (s, NULL, 16);
 818 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 819                 if ((s = getenv ("splashpos")) != NULL) {
 820                         if (s[0] == 'm')
 821                                 x = BMP_ALIGN_CENTER;
 822                         else
 823                                 x = simple_strtol (s, NULL, 0);
 824
 825                         if ((s = strchr (s + 1, ',')) != NULL) {
 826                                 if (s[1] == 'm')
 827                                         y = BMP_ALIGN_CENTER;
 828                                 else
 829                                         y = simple_strtol (s + 1, NULL, 0);
 830                         }
 831                 }
 832 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 833
 834 #ifdef CONFIG_VIDEO_BMP_GZIP
 835                 bmp_image_t *bmp = (bmp_image_t *)addr;
 836                 unsigned long len;
 837
 838                 if (!((bmp->header.signature[0]=='B') &&
 839                       (bmp->header.signature[1]=='M'))) {
 840                         addr = (ulong)gunzip_bmp(addr, &len);
 841                 }
 842 #endif
 843
 844                 if (lcd_display_bitmap (addr, x, y) == 0) {
 845                         return ((void *)lcd_base);
 846                 }
 847         }
 848 #endif /* CONFIG_SPLASH_SCREEN */
 849
 850 #ifdef CONFIG_LCD_LOGO
 851         bitmap_plot (0, 0);
 852 #endif /* CONFIG_LCD_LOGO */
 853
 854 #ifdef CONFIG_LCD_INFO
 855         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
 856         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
 857         lcd_show_board_info();
 858 #endif /* CONFIG_LCD_INFO */
 859
 860 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 861         return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
 862 #else
 863         return ((void *)lcd_base);
 864 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 865 }
 866
 867 /************************************************************************/
 868 /************************************************************************/