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 DECLARE_GLOBAL_DATA_PTR;
  76
  77 ulong lcd_setmem (ulong addr);
  78
  79 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
  80 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
  81 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
  82
  83 static int lcd_init(void *lcdbase);
  84
  85 static void *lcd_logo (void);
  86
  87 static int lcd_getbgcolor(void);
  88 static void lcd_setfgcolor(int color);
  89 static void lcd_setbgcolor(int color);
  90
  91 char lcd_is_enabled = 0;
  92
  93 #ifdef  NOT_USED_SO_FAR
  94 static void lcd_getcolreg(ushort regno,
  95                                 ushort *red, ushort *green, ushort *blue);
  96 static int lcd_getfgcolor(void);
  97 #endif  /* NOT_USED_SO_FAR */
  98
  99 /************************************************************************/
 100
 101 /*----------------------------------------------------------------------*/
 102
 103 static void console_scrollup(void)
 104 {
 105         /* Copy up rows ignoring the first one */
 106         memcpy(CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
 107
 108         /* Clear the last one */
 109         memset(CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
 110 }
 111
 112 /*----------------------------------------------------------------------*/
 113
 114 static inline void console_back(void)
 115 {
 116         if (--console_col < 0) {
 117                 console_col = CONSOLE_COLS-1 ;
 118                 if (--console_row < 0) {
 119                         console_row = 0;
 120                 }
 121         }
 122
 123         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 124                 console_row * VIDEO_FONT_HEIGHT, ' ');
 125 }
 126
 127 /*----------------------------------------------------------------------*/
 128
 129 static inline void console_newline(void)
 130 {
 131         ++console_row;
 132         console_col = 0;
 133
 134         /* Check if we need to scroll the terminal */
 135         if (console_row >= CONSOLE_ROWS) {
 136                 /* Scroll everything up */
 137                 console_scrollup();
 138                 --console_row;
 139         }
 140 }
 141
 142 /*----------------------------------------------------------------------*/
 143
 144 void lcd_putc(const char c)
 145 {
 146         if (!lcd_is_enabled) {
 147                 serial_putc(c);
 148
 149                 return;
 150         }
 151
 152         switch (c) {
 153         case '\r':
 154                 console_col = 0;
 155
 156                 return;
 157         case '\n':
 158                 console_newline();
 159
 160                 return;
 161         case '\t':      /* Tab (8 chars alignment) */
 162                 console_col +=  8;
 163                 console_col &= ~7;
 164
 165                 if (console_col >= CONSOLE_COLS)
 166                         console_newline();
 167
 168                 return;
 169         case '\b':
 170                 console_back();
 171
 172                 return;
 173         default:
 174                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 175                         console_row * VIDEO_FONT_HEIGHT, c);
 176                 if (++console_col >= CONSOLE_COLS)
 177                         console_newline();
 178         }
 179 }
 180
 181 /*----------------------------------------------------------------------*/
 182
 183 void lcd_puts(const char *s)
 184 {
 185         if (!lcd_is_enabled) {
 186                 serial_puts(s);
 187
 188                 return;
 189         }
 190
 191         while (*s) {
 192                 lcd_putc(*s++);
 193         }
 194 }
 195
 196 /*----------------------------------------------------------------------*/
 197
 198 void lcd_printf(const char *fmt, ...)
 199 {
 200         va_list args;
 201         char buf[CONFIG_SYS_PBSIZE];
 202
 203         va_start(args, fmt);
 204         vsprintf(buf, fmt, args);
 205         va_end(args);
 206
 207         lcd_puts(buf);
 208 }
 209
 210 /************************************************************************/
 211 /* ** Low-Level Graphics Routines                                       */
 212 /************************************************************************/
 213
 214 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 215 {
 216         uchar *dest;
 217         ushort row;
 218
 219 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 220         y += BMP_LOGO_HEIGHT;
 221 #endif
 222
 223 #if LCD_BPP == LCD_MONOCHROME
 224         ushort off  = x * (1 << LCD_BPP) % 8;
 225 #endif
 226
 227         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 228
 229         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 230                 uchar *s = str;
 231                 int i;
 232 #if LCD_BPP == LCD_COLOR16
 233                 ushort *d = (ushort *)dest;
 234 #else
 235                 uchar *d = dest;
 236 #endif
 237
 238 #if LCD_BPP == LCD_MONOCHROME
 239                 uchar rest = *d & -(1 << (8-off));
 240                 uchar sym;
 241 #endif
 242                 for (i = 0; i < count; ++i) {
 243                         uchar c, bits;
 244
 245                         c = *s++;
 246                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 247
 248 #if LCD_BPP == LCD_MONOCHROME
 249                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 250                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 251
 252                         *d++ = rest | (sym >> off);
 253                         rest = sym << (8-off);
 254 #elif LCD_BPP == LCD_COLOR8
 255                         for (c = 0; c < 8; ++c) {
 256                                 *d++ = (bits & 0x80) ?
 257                                                 lcd_color_fg : lcd_color_bg;
 258                                 bits <<= 1;
 259                         }
 260 #elif LCD_BPP == LCD_COLOR16
 261                         for (c = 0; c < 8; ++c) {
 262                                 *d++ = (bits & 0x80) ?
 263                                                 lcd_color_fg : lcd_color_bg;
 264                                 bits <<= 1;
 265                         }
 266 #endif
 267                 }
 268 #if LCD_BPP == LCD_MONOCHROME
 269                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 270 #endif
 271         }
 272 }
 273
 274 /*----------------------------------------------------------------------*/
 275
 276 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 277 {
 278         lcd_drawchars(x, y, s, strlen((char *)s));
 279 }
 280
 281 /*----------------------------------------------------------------------*/
 282
 283 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 284 {
 285         lcd_drawchars(x, y, &c, 1);
 286 }
 287
 288 /************************************************************************/
 289 /**  Small utility to check that you got the colours right              */
 290 /************************************************************************/
 291 #ifdef LCD_TEST_PATTERN
 292
 293 #define N_BLK_VERT      2
 294 #define N_BLK_HOR       3
 295
 296 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 297         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 298         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 299 };
 300
 301 static void test_pattern(void)
 302 {
 303         ushort v_max  = panel_info.vl_row;
 304         ushort h_max  = panel_info.vl_col;
 305         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 306         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 307         ushort v, h;
 308         uchar *pix = (uchar *)lcd_base;
 309
 310         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 311                 h_max, v_max, h_step, v_step);
 312
 313         /* WARNING: Code silently assumes 8bit/pixel */
 314         for (v = 0; v < v_max; ++v) {
 315                 uchar iy = v / v_step;
 316                 for (h = 0; h < h_max; ++h) {
 317                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 318                         *pix++ = test_colors[ix];
 319                 }
 320         }
 321 }
 322 #endif /* LCD_TEST_PATTERN */
 323
 324
 325 /************************************************************************/
 326 /* ** GENERIC Initialization Routines                                   */
 327 /************************************************************************/
 328
 329 int drv_lcd_init (void)
 330 {
 331         struct stdio_dev lcddev;
 332         int rc;
 333
 334         lcd_base = (void *)(gd->fb_base);
 335
 336         lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
 337
 338         lcd_init(lcd_base);             /* LCD initialization */
 339
 340         /* Device initialization */
 341         memset(&lcddev, 0, sizeof(lcddev));
 342
 343         strcpy(lcddev.name, "lcd");
 344         lcddev.ext   = 0;                       /* No extensions */
 345         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 346         lcddev.putc  = lcd_putc;                /* 'putc' function */
 347         lcddev.puts  = lcd_puts;                /* 'puts' function */
 348
 349         rc = stdio_register (&lcddev);
 350
 351         return (rc == 0) ? 1 : rc;
 352 }
 353
 354 /*----------------------------------------------------------------------*/
 355 static
 356 int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 357 {
 358         lcd_clear();
 359         return 0;
 360 }
 361
 362 void lcd_clear(void)
 363 {
 364 #if LCD_BPP == LCD_MONOCHROME
 365         /* Setting the palette */
 366         lcd_initcolregs();
 367
 368 #elif LCD_BPP == LCD_COLOR8
 369         /* Setting the palette */
 370         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 371         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 372         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 373         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 374         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 375         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 376         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 377         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 378         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 379 #endif
 380
 381 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 382         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 383         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 384 #else
 385         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 386         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 387 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 388
 389 #ifdef  LCD_TEST_PATTERN
 390         test_pattern();
 391 #else
 392         /* set framebuffer to background color */
 393         memset((char *)lcd_base,
 394                 COLOR_MASK(lcd_getbgcolor()),
 395                 lcd_line_length*panel_info.vl_row);
 396 #endif
 397         /* Paint the logo and retrieve LCD base address */
 398         debug("[LCD] Drawing the logo...\n");
 399         lcd_console_address = lcd_logo ();
 400
 401         console_col = 0;
 402         console_row = 0;
 403 }
 404
 405 U_BOOT_CMD(
 406         cls,    1,      1,      do_lcd_clear,
 407         "clear screen",
 408         ""
 409 );
 410
 411 /*----------------------------------------------------------------------*/
 412
 413 static int lcd_init(void *lcdbase)
 414 {
 415         /* Initialize the lcd controller */
 416         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 417
 418         lcd_ctrl_init(lcdbase);
 419         lcd_is_enabled = 1;
 420         lcd_clear();
 421         lcd_enable ();
 422
 423         /* Initialize the console */
 424         console_col = 0;
 425 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 426         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 427 #else
 428         console_row = 1;        /* leave 1 blank line below logo */
 429 #endif
 430
 431         return 0;
 432 }
 433
 434
 435 /************************************************************************/
 436 /* ** ROM capable initialization part - needed to reserve FB memory     */
 437 /************************************************************************/
 438 /*
 439  * This is called early in the system initialization to grab memory
 440  * for the LCD controller.
 441  * Returns new address for monitor, after reserving LCD buffer memory
 442  *
 443  * Note that this is running from ROM, so no write access to global data.
 444  */
 445 ulong lcd_setmem(ulong addr)
 446 {
 447         ulong size;
 448         int line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 449
 450         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 451                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 452
 453         size = line_length * panel_info.vl_row;
 454
 455         /* Round up to nearest full page */
 456         size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 457
 458         /* Allocate pages for the frame buffer. */
 459         addr -= size;
 460
 461         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 462
 463         return addr;
 464 }
 465
 466 /*----------------------------------------------------------------------*/
 467
 468 static void lcd_setfgcolor(int color)
 469 {
 470         lcd_color_fg = color;
 471 }
 472
 473 /*----------------------------------------------------------------------*/
 474
 475 static void lcd_setbgcolor(int color)
 476 {
 477         lcd_color_bg = color;
 478 }
 479
 480 /*----------------------------------------------------------------------*/
 481
 482 #ifdef  NOT_USED_SO_FAR
 483 static int lcd_getfgcolor(void)
 484 {
 485         return lcd_color_fg;
 486 }
 487 #endif  /* NOT_USED_SO_FAR */
 488
 489 /*----------------------------------------------------------------------*/
 490
 491 static int lcd_getbgcolor(void)
 492 {
 493         return lcd_color_bg;
 494 }
 495
 496 /*----------------------------------------------------------------------*/
 497
 498 /************************************************************************/
 499 /* ** Chipset depending Bitmap / Logo stuff...                          */
 500 /************************************************************************/
 501 static inline ushort *configuration_get_cmap(void)
 502 {
 503 #if defined CONFIG_CPU_PXA
 504         struct pxafb_info *fbi = &panel_info.pxa;
 505         return (ushort *)fbi->palette;
 506 #elif defined(CONFIG_MPC823)
 507         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 508         cpm8xx_t *cp = &(immr->im_cpm);
 509         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 510 #elif defined(CONFIG_ATMEL_LCD)
 511         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 512 #else
 513         return (ushort *)panel_info.cmap;
 514 #endif
 515 }
 516
 517 #ifdef CONFIG_LCD_LOGO
 518 void bitmap_plot(int x, int y)
 519 {
 520 #ifdef CONFIG_ATMEL_LCD
 521         uint *cmap = (uint *)bmp_logo_palette;
 522 #else
 523         ushort *cmap = (ushort *)bmp_logo_palette;
 524 #endif
 525         ushort i, j;
 526         uchar *bmap;
 527         uchar *fb;
 528         ushort *fb16;
 529 #if defined(CONFIG_MPC823)
 530         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 531         cpm8xx_t *cp = &(immr->im_cpm);
 532 #endif
 533
 534         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 535                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 536                 ARRAY_SIZE(bmp_logo_palette));
 537
 538         bmap = &bmp_logo_bitmap[0];
 539         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 540
 541         if (NBITS(panel_info.vl_bpix) < 12) {
 542                 /* Leave room for default color map
 543                  * default case: generic system with no cmap (most likely 16bpp)
 544                  * cmap was set to the source palette, so no change is done.
 545                  * This avoids even more ifdefs in the next stanza
 546                  */
 547 #if defined(CONFIG_MPC823)
 548                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 549 #elif defined(CONFIG_ATMEL_LCD)
 550                 cmap = (uint *)configuration_get_cmap();
 551 #else
 552                 cmap = configuration_get_cmap();
 553 #endif
 554
 555                 WATCHDOG_RESET();
 556
 557                 /* Set color map */
 558                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++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                 u16 col16;
 592                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 593                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 594                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 595                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 596                                 fb16[j] =
 597                                         ((col16 & 0x000F) << 1) |
 598                                         ((col16 & 0x00F0) << 3) |
 599                                         ((col16 & 0x0F00) << 4);
 600                                 }
 601                         bmap += BMP_LOGO_WIDTH;
 602                         fb16 += panel_info.vl_col;
 603                 }
 604         }
 605
 606         WATCHDOG_RESET();
 607 }
 608 #else
 609 static inline void bitmap_plot(int x, int y) {}
 610 #endif /* CONFIG_LCD_LOGO */
 611
 612 /*----------------------------------------------------------------------*/
 613 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 614 /*
 615  * Display the BMP file located at address bmp_image.
 616  * Only uncompressed.
 617  */
 618
 619 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 620 #define BMP_ALIGN_CENTER        0x7FFF
 621
 622 static void splash_align_axis(int *axis, unsigned long panel_size,
 623                                         unsigned long picture_size)
 624 {
 625         unsigned long panel_picture_delta = panel_size - picture_size;
 626         unsigned long axis_alignment;
 627
 628         if (*axis == BMP_ALIGN_CENTER)
 629                 axis_alignment = panel_picture_delta / 2;
 630         else if (*axis < 0)
 631                 axis_alignment = panel_picture_delta + *axis + 1;
 632         else
 633                 return;
 634
 635         *axis = max(0, axis_alignment);
 636 }
 637 #endif
 638
 639 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 640 {
 641 #if !defined(CONFIG_MCC200)
 642         ushort *cmap = NULL;
 643 #endif
 644         ushort *cmap_base = NULL;
 645         ushort i, j;
 646         uchar *fb;
 647         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 648         uchar *bmap;
 649         ushort padded_line;
 650         unsigned long width, height, byte_width;
 651         unsigned long pwidth = panel_info.vl_col;
 652         unsigned colors, bpix, bmp_bpix;
 653
 654         if (!((bmp->header.signature[0] == 'B') &&
 655                 (bmp->header.signature[1] == 'M'))) {
 656                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 657
 658                 return 1;
 659         }
 660
 661         width = le32_to_cpu(bmp->header.width);
 662         height = le32_to_cpu(bmp->header.height);
 663         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 664         colors = 1 << bmp_bpix;
 665
 666         bpix = NBITS(panel_info.vl_bpix);
 667
 668         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
 669                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 670                         bpix, bmp_bpix);
 671
 672                 return 1;
 673         }
 674
 675         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 676         if (bpix != bmp_bpix && (bmp_bpix != 8 || bpix != 16 || bpix != 32)) {
 677                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 678                         bpix,
 679                         le16_to_cpu(bmp->header.bit_count));
 680
 681                 return 1;
 682         }
 683
 684         debug("Display-bmp: %d x %d  with %d colors\n",
 685                 (int)width, (int)height, (int)colors);
 686
 687 #if !defined(CONFIG_MCC200)
 688         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 689         if (bmp_bpix == 8) {
 690                 cmap = configuration_get_cmap();
 691                 cmap_base = cmap;
 692
 693                 /* Set color map */
 694                 for (i = 0; i < colors; ++i) {
 695                         bmp_color_table_entry_t cte = bmp->color_table[i];
 696 #if !defined(CONFIG_ATMEL_LCD)
 697                         ushort colreg =
 698                                 ( ((cte.red)   << 8) & 0xf800) |
 699                                 ( ((cte.green) << 3) & 0x07e0) |
 700                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 701 #ifdef CONFIG_SYS_INVERT_COLORS
 702                         *cmap = 0xffff - colreg;
 703 #else
 704                         *cmap = colreg;
 705 #endif
 706 #if defined(CONFIG_MPC823)
 707                         cmap--;
 708 #else
 709                         cmap++;
 710 #endif
 711 #else /* CONFIG_ATMEL_LCD */
 712                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 713 #endif
 714                 }
 715         }
 716 #endif
 717
 718         /*
 719          *  BMP format for Monochrome assumes that the state of a
 720          * pixel is described on a per Bit basis, not per Byte.
 721          *  So, in case of Monochrome BMP we should align widths
 722          * on a byte boundary and convert them from Bit to Byte
 723          * units.
 724          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 725          * their own ways, so make the converting to be MCC200
 726          * specific.
 727          */
 728 #if defined(CONFIG_MCC200)
 729         if (bpix == 1) {
 730                 width = ((width + 7) & ~7) >> 3;
 731                 x     = ((x + 7) & ~7) >> 3;
 732                 pwidth= ((pwidth + 7) & ~7) >> 3;
 733         }
 734 #endif
 735
 736         padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
 737
 738 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 739         splash_align_axis(&x, pwidth, width);
 740         splash_align_axis(&y, panel_info.vl_row, height);
 741 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 742
 743         if ((x + width) > pwidth)
 744                 width = pwidth - x;
 745         if ((y + height) > panel_info.vl_row)
 746                 height = panel_info.vl_row - y;
 747
 748         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 749         fb   = (uchar *) (lcd_base +
 750                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 751
 752         switch (bmp_bpix) {
 753         case 1: /* pass through */
 754         case 8:
 755                 if (bpix != 16)
 756                         byte_width = width;
 757                 else
 758                         byte_width = width * 2;
 759
 760                 for (i = 0; i < height; ++i) {
 761                         WATCHDOG_RESET();
 762                         for (j = 0; j < width; j++) {
 763                                 if (bpix != 16) {
 764 #if defined(CONFIG_CPU_PXA) || defined(CONFIG_ATMEL_LCD)
 765                                         *(fb++) = *(bmap++);
 766 #elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 767                                         *(fb++) = 255 - *(bmap++);
 768 #endif
 769                                 } else {
 770                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 771                                         fb += sizeof(uint16_t) / sizeof(*fb);
 772                                 }
 773                         }
 774                         bmap += (width - padded_line);
 775                         fb   -= (byte_width + lcd_line_length);
 776                 }
 777                 break;
 778
 779 #if defined(CONFIG_BMP_16BPP)
 780         case 16:
 781                 for (i = 0; i < height; ++i) {
 782                         WATCHDOG_RESET();
 783                         for (j = 0; j < width; j++) {
 784 #if defined(CONFIG_ATMEL_LCD_BGR555)
 785                                 *(fb++) = ((bmap[0] & 0x1f) << 2) |
 786                                         (bmap[1] & 0x03);
 787                                 *(fb++) = (bmap[0] & 0xe0) |
 788                                         ((bmap[1] & 0x7c) >> 2);
 789                                 bmap += 2;
 790 #else
 791                                 *(fb++) = *(bmap++);
 792                                 *(fb++) = *(bmap++);
 793 #endif
 794                         }
 795                         bmap += (padded_line - width) * 2;
 796                         fb   -= (width * 2 + lcd_line_length);
 797                 }
 798                 break;
 799 #endif /* CONFIG_BMP_16BPP */
 800
 801 #if defined(CONFIG_BMP_32BPP)
 802         case 32:
 803                 for (i = 0; i < height; ++i) {
 804                         for (j = 0; j < width; j++) {
 805                                 *(fb++) = *(bmap++);
 806                                 *(fb++) = *(bmap++);
 807                                 *(fb++) = *(bmap++);
 808                                 *(fb++) = *(bmap++);
 809                         }
 810                         fb  -= (lcd_line_length + width * (bpix / 8));
 811                 }
 812                 break;
 813 #endif /* CONFIG_BMP_32BPP */
 814         default:
 815                 break;
 816         };
 817
 818         return 0;
 819 }
 820 #endif
 821
 822 static void *lcd_logo(void)
 823 {
 824 #ifdef CONFIG_SPLASH_SCREEN
 825         char *s;
 826         ulong addr;
 827         static int do_splash = 1;
 828
 829         if (do_splash && (s = getenv("splashimage")) != NULL) {
 830                 int x = 0, y = 0;
 831                 do_splash = 0;
 832
 833                 addr = simple_strtoul (s, NULL, 16);
 834 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 835                 s = getenv("splashpos");
 836                 if (s != NULL) {
 837                         if (s[0] == 'm')
 838                                 x = BMP_ALIGN_CENTER;
 839                         else
 840                                 x = simple_strtol(s, NULL, 0);
 841
 842                         s = strchr(s + 1, ',');
 843                         if (s != NULL) {
 844                                 if (s[1] == 'm')
 845                                         y = BMP_ALIGN_CENTER;
 846                                 else
 847                                         y = simple_strtol (s + 1, NULL, 0);
 848                         }
 849                 }
 850 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 851
 852                 if (bmp_display(addr, x, y) == 0)
 853                         return (void *)lcd_base;
 854         }
 855 #endif /* CONFIG_SPLASH_SCREEN */
 856
 857         bitmap_plot(0, 0);
 858
 859 #ifdef CONFIG_LCD_INFO
 860         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
 861         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
 862         lcd_show_board_info();
 863 #endif /* CONFIG_LCD_INFO */
 864
 865 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 866         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
 867 #else
 868         return (void *)lcd_base;
 869 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 870 }
 871
 872 /************************************************************************/
 873 /************************************************************************/