common/lcd.c

   1 /*
   2  * Common LCD routines for supported CPUs
   3  *
   4  * (C) Copyright 2001-2002
   5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 /************************************************************************/
  27 /* ** HEADER FILES                                                      */
  28 /************************************************************************/
  29
  30 /* #define DEBUG */
  31
  32 #include <config.h>
  33 #include <common.h>
  34 #include <command.h>
  35 #include <stdarg.h>
  36 #include <search.h>
  37 #include <env_callback.h>
  38 #include <linux/types.h>
  39 #include <stdio_dev.h>
  40 #if defined(CONFIG_POST)
  41 #include <post.h>
  42 #endif
  43 #include <lcd.h>
  44 #include <watchdog.h>
  45
  46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  47         defined(CONFIG_CPU_MONAHANS)
  48 #define CONFIG_CPU_PXA
  49 #include <asm/byteorder.h>
  50 #endif
  51
  52 #if defined(CONFIG_MPC823)
  53 #include <lcdvideo.h>
  54 #endif
  55
  56 #if defined(CONFIG_ATMEL_LCD)
  57 #include <atmel_lcdc.h>
  58 #endif
  59
  60 /************************************************************************/
  61 /* ** FONT DATA                                                         */
  62 /************************************************************************/
  63 #include <video_font.h>         /* Get font data, width and height      */
  64 #include <video_font_data.h>
  65
  66 /************************************************************************/
  67 /* ** LOGO DATA                                                         */
  68 /************************************************************************/
  69 #ifdef CONFIG_LCD_LOGO
  70 # include <bmp_logo.h>          /* Get logo data, width and height      */
  71 # include <bmp_logo_data.h>
  72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  73 #  error Default Color Map overlaps with Logo Color Map
  74 # endif
  75 #endif
  76
  77 #ifndef CONFIG_LCD_ALIGNMENT
  78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  79 #endif
  80
  81 /* By default we scroll by a single line */
  82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  83 #define CONFIG_CONSOLE_SCROLL_LINES 1
  84 #endif
  85
  86 DECLARE_GLOBAL_DATA_PTR;
  87
  88 ulong lcd_setmem (ulong addr);
  89
  90 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
  91 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
  92 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
  93
  94 static int lcd_init(void *lcdbase);
  95
  96 static void *lcd_logo (void);
  97
  98 static int lcd_getbgcolor(void);
  99 static void lcd_setfgcolor(int color);
 100 static void lcd_setbgcolor(int color);
 101
 102 char lcd_is_enabled = 0;
 103
 104 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 105
 106
 107 #ifdef  NOT_USED_SO_FAR
 108 static void lcd_getcolreg(ushort regno,
 109                                 ushort *red, ushort *green, ushort *blue);
 110 static int lcd_getfgcolor(void);
 111 #endif  /* NOT_USED_SO_FAR */
 112
 113 /************************************************************************/
 114
 115 /* Flush LCD activity to the caches */
 116 void lcd_sync(void)
 117 {
 118         /*
 119          * flush_dcache_range() is declared in common.h but it seems that some
 120          * architectures do not actually implement it. Is there a way to find
 121          * out whether it exists? For now, ARM is safe.
 122          */
 123 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 124         int line_length;
 125
 126         if (lcd_flush_dcache)
 127                 flush_dcache_range((u32)lcd_base,
 128                         (u32)(lcd_base + lcd_get_size(&line_length)));
 129 #endif
 130 }
 131
 132 void lcd_set_flush_dcache(int flush)
 133 {
 134         lcd_flush_dcache = (flush != 0);
 135 }
 136
 137 /*----------------------------------------------------------------------*/
 138
 139 static void console_scrollup(void)
 140 {
 141         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 142
 143         /* Copy up rows ignoring those that will be overwritten */
 144         memcpy(CONSOLE_ROW_FIRST,
 145                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 146                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 147
 148         /* Clear the last rows */
 149         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 150                 COLOR_MASK(lcd_color_bg),
 151                CONSOLE_ROW_SIZE * rows);
 152
 153         lcd_sync();
 154         console_row -= rows;
 155 }
 156
 157 /*----------------------------------------------------------------------*/
 158
 159 static inline void console_back(void)
 160 {
 161         if (--console_col < 0) {
 162                 console_col = CONSOLE_COLS-1 ;
 163                 if (--console_row < 0) {
 164                         console_row = 0;
 165                 }
 166         }
 167
 168         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 169                 console_row * VIDEO_FONT_HEIGHT, ' ');
 170 }
 171
 172 /*----------------------------------------------------------------------*/
 173
 174 static inline void console_newline(void)
 175 {
 176         ++console_row;
 177         console_col = 0;
 178
 179         /* Check if we need to scroll the terminal */
 180         if (console_row >= CONSOLE_ROWS) {
 181                 /* Scroll everything up */
 182                 console_scrollup();
 183         } else {
 184                 lcd_sync();
 185         }
 186 }
 187
 188 /*----------------------------------------------------------------------*/
 189
 190 void lcd_putc(const char c)
 191 {
 192         if (!lcd_is_enabled) {
 193                 serial_putc(c);
 194
 195                 return;
 196         }
 197
 198         switch (c) {
 199         case '\r':
 200                 console_col = 0;
 201
 202                 return;
 203         case '\n':
 204                 console_newline();
 205
 206                 return;
 207         case '\t':      /* Tab (8 chars alignment) */
 208                 console_col +=  8;
 209                 console_col &= ~7;
 210
 211                 if (console_col >= CONSOLE_COLS)
 212                         console_newline();
 213
 214                 return;
 215         case '\b':
 216                 console_back();
 217
 218                 return;
 219         default:
 220                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 221                         console_row * VIDEO_FONT_HEIGHT, c);
 222                 if (++console_col >= CONSOLE_COLS)
 223                         console_newline();
 224         }
 225 }
 226
 227 /*----------------------------------------------------------------------*/
 228
 229 void lcd_puts(const char *s)
 230 {
 231         if (!lcd_is_enabled) {
 232                 serial_puts(s);
 233
 234                 return;
 235         }
 236
 237         while (*s) {
 238                 lcd_putc(*s++);
 239         }
 240         lcd_sync();
 241 }
 242
 243 /*----------------------------------------------------------------------*/
 244
 245 void lcd_printf(const char *fmt, ...)
 246 {
 247         va_list args;
 248         char buf[CONFIG_SYS_PBSIZE];
 249
 250         va_start(args, fmt);
 251         vsprintf(buf, fmt, args);
 252         va_end(args);
 253
 254         lcd_puts(buf);
 255 }
 256
 257 /************************************************************************/
 258 /* ** Low-Level Graphics Routines                                       */
 259 /************************************************************************/
 260
 261 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 262 {
 263         uchar *dest;
 264         ushort row;
 265
 266 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 267         y += BMP_LOGO_HEIGHT;
 268 #endif
 269
 270 #if LCD_BPP == LCD_MONOCHROME
 271         ushort off  = x * (1 << LCD_BPP) % 8;
 272 #endif
 273
 274         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 275
 276         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 277                 uchar *s = str;
 278                 int i;
 279 #if LCD_BPP == LCD_COLOR16
 280                 ushort *d = (ushort *)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 #elif LCD_BPP == LCD_COLOR8
 302                         for (c = 0; c < 8; ++c) {
 303                                 *d++ = (bits & 0x80) ?
 304                                                 lcd_color_fg : lcd_color_bg;
 305                                 bits <<= 1;
 306                         }
 307 #elif LCD_BPP == LCD_COLOR16
 308                         for (c = 0; c < 8; ++c) {
 309                                 *d++ = (bits & 0x80) ?
 310                                                 lcd_color_fg : lcd_color_bg;
 311                                 bits <<= 1;
 312                         }
 313 #endif
 314                 }
 315 #if LCD_BPP == LCD_MONOCHROME
 316                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 317 #endif
 318         }
 319 }
 320
 321 /*----------------------------------------------------------------------*/
 322
 323 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 324 {
 325         lcd_drawchars(x, y, s, strlen((char *)s));
 326 }
 327
 328 /*----------------------------------------------------------------------*/
 329
 330 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 331 {
 332         lcd_drawchars(x, y, &c, 1);
 333 }
 334
 335 /************************************************************************/
 336 /**  Small utility to check that you got the colours right              */
 337 /************************************************************************/
 338 #ifdef LCD_TEST_PATTERN
 339
 340 #define N_BLK_VERT      2
 341 #define N_BLK_HOR       3
 342
 343 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 344         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 345         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 346 };
 347
 348 static void test_pattern(void)
 349 {
 350         ushort v_max  = panel_info.vl_row;
 351         ushort h_max  = panel_info.vl_col;
 352         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 353         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 354         ushort v, h;
 355         uchar *pix = (uchar *)lcd_base;
 356
 357         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 358                 h_max, v_max, h_step, v_step);
 359
 360         /* WARNING: Code silently assumes 8bit/pixel */
 361         for (v = 0; v < v_max; ++v) {
 362                 uchar iy = v / v_step;
 363                 for (h = 0; h < h_max; ++h) {
 364                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 365                         *pix++ = test_colors[ix];
 366                 }
 367         }
 368 }
 369 #endif /* LCD_TEST_PATTERN */
 370
 371
 372 /************************************************************************/
 373 /* ** GENERIC Initialization Routines                                   */
 374 /************************************************************************/
 375
 376 int lcd_get_size(int *line_length)
 377 {
 378         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 379         return *line_length * panel_info.vl_row;
 380 }
 381
 382 int drv_lcd_init (void)
 383 {
 384         struct stdio_dev lcddev;
 385         int rc;
 386
 387         lcd_base = (void *)(gd->fb_base);
 388
 389         lcd_init(lcd_base);             /* LCD initialization */
 390
 391         /* Device initialization */
 392         memset(&lcddev, 0, sizeof(lcddev));
 393
 394         strcpy(lcddev.name, "lcd");
 395         lcddev.ext   = 0;                       /* No extensions */
 396         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 397         lcddev.putc  = lcd_putc;                /* 'putc' function */
 398         lcddev.puts  = lcd_puts;                /* 'puts' function */
 399
 400         rc = stdio_register (&lcddev);
 401
 402         return (rc == 0) ? 1 : rc;
 403 }
 404
 405 /*----------------------------------------------------------------------*/
 406 void lcd_clear(void)
 407 {
 408 #if LCD_BPP == LCD_MONOCHROME
 409         /* Setting the palette */
 410         lcd_initcolregs();
 411
 412 #elif LCD_BPP == LCD_COLOR8
 413         /* Setting the palette */
 414         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 415         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 416         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 417         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 418         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 419         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 420         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 421         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 422         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 423 #endif
 424
 425 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 426         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 427         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 428 #else
 429         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 430         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 431 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 432
 433 #ifdef  LCD_TEST_PATTERN
 434         test_pattern();
 435 #else
 436         /* set framebuffer to background color */
 437         memset((char *)lcd_base,
 438                 COLOR_MASK(lcd_getbgcolor()),
 439                 lcd_line_length*panel_info.vl_row);
 440 #endif
 441         /* Paint the logo and retrieve LCD base address */
 442         debug("[LCD] Drawing the logo...\n");
 443         lcd_console_address = lcd_logo ();
 444
 445         console_col = 0;
 446         console_row = 0;
 447         lcd_sync();
 448 }
 449
 450 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 451                         char *const argv[])
 452 {
 453         lcd_clear();
 454         return 0;
 455 }
 456
 457 U_BOOT_CMD(
 458         cls,    1,      1,      do_lcd_clear,
 459         "clear screen",
 460         ""
 461 );
 462
 463 /*----------------------------------------------------------------------*/
 464
 465 static int lcd_init(void *lcdbase)
 466 {
 467         /* Initialize the lcd controller */
 468         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 469
 470         lcd_ctrl_init(lcdbase);
 471         lcd_get_size(&lcd_line_length);
 472         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 473         lcd_is_enabled = 1;
 474         lcd_clear();
 475         lcd_enable ();
 476
 477         /* Initialize the console */
 478         console_col = 0;
 479 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 480         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 481 #else
 482         console_row = 1;        /* leave 1 blank line below logo */
 483 #endif
 484
 485         return 0;
 486 }
 487
 488
 489 /************************************************************************/
 490 /* ** ROM capable initialization part - needed to reserve FB memory     */
 491 /************************************************************************/
 492 /*
 493  * This is called early in the system initialization to grab memory
 494  * for the LCD controller.
 495  * Returns new address for monitor, after reserving LCD buffer memory
 496  *
 497  * Note that this is running from ROM, so no write access to global data.
 498  */
 499 ulong lcd_setmem(ulong addr)
 500 {
 501         ulong size;
 502         int line_length;
 503
 504         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 505                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 506
 507         size = lcd_get_size(&line_length);
 508
 509         /* Round up to nearest full page, or MMU section if defined */
 510         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 511         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 512
 513         /* Allocate pages for the frame buffer. */
 514         addr -= size;
 515
 516         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 517
 518         return addr;
 519 }
 520
 521 /*----------------------------------------------------------------------*/
 522
 523 static void lcd_setfgcolor(int color)
 524 {
 525         lcd_color_fg = color;
 526 }
 527
 528 /*----------------------------------------------------------------------*/
 529
 530 static void lcd_setbgcolor(int color)
 531 {
 532         lcd_color_bg = color;
 533 }
 534
 535 /*----------------------------------------------------------------------*/
 536
 537 #ifdef  NOT_USED_SO_FAR
 538 static int lcd_getfgcolor(void)
 539 {
 540         return lcd_color_fg;
 541 }
 542 #endif  /* NOT_USED_SO_FAR */
 543
 544 /*----------------------------------------------------------------------*/
 545
 546 static int lcd_getbgcolor(void)
 547 {
 548         return lcd_color_bg;
 549 }
 550
 551 /*----------------------------------------------------------------------*/
 552
 553 /************************************************************************/
 554 /* ** Chipset depending Bitmap / Logo stuff...                          */
 555 /************************************************************************/
 556 static inline ushort *configuration_get_cmap(void)
 557 {
 558 #if defined CONFIG_CPU_PXA
 559         struct pxafb_info *fbi = &panel_info.pxa;
 560         return (ushort *)fbi->palette;
 561 #elif defined(CONFIG_MPC823)
 562         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 563         cpm8xx_t *cp = &(immr->im_cpm);
 564         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 565 #elif defined(CONFIG_ATMEL_LCD)
 566         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 567 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 568         return panel_info.cmap;
 569 #else
 570 #if defined(CONFIG_LCD_LOGO)
 571         return bmp_logo_palette;
 572 #else
 573         return NULL;
 574 #endif
 575 #endif
 576 }
 577
 578 #ifdef CONFIG_LCD_LOGO
 579 void bitmap_plot(int x, int y)
 580 {
 581 #ifdef CONFIG_ATMEL_LCD
 582         uint *cmap = (uint *)bmp_logo_palette;
 583 #else
 584         ushort *cmap = (ushort *)bmp_logo_palette;
 585 #endif
 586         ushort i, j;
 587         uchar *bmap;
 588         uchar *fb;
 589         ushort *fb16;
 590 #if defined(CONFIG_MPC823)
 591         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 592         cpm8xx_t *cp = &(immr->im_cpm);
 593 #endif
 594
 595         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 596                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 597                 ARRAY_SIZE(bmp_logo_palette));
 598
 599         bmap = &bmp_logo_bitmap[0];
 600         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 601
 602         if (NBITS(panel_info.vl_bpix) < 12) {
 603                 /* Leave room for default color map
 604                  * default case: generic system with no cmap (most likely 16bpp)
 605                  * cmap was set to the source palette, so no change is done.
 606                  * This avoids even more ifdefs in the next stanza
 607                  */
 608 #if defined(CONFIG_MPC823)
 609                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 610 #elif defined(CONFIG_ATMEL_LCD)
 611                 cmap = (uint *)configuration_get_cmap();
 612 #else
 613                 cmap = configuration_get_cmap();
 614 #endif
 615
 616                 WATCHDOG_RESET();
 617
 618                 /* Set color map */
 619                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 620                         ushort colreg = bmp_logo_palette[i];
 621 #ifdef CONFIG_ATMEL_LCD
 622                         uint lut_entry;
 623 #ifdef CONFIG_ATMEL_LCD_BGR555
 624                         lut_entry = ((colreg & 0x000F) << 11) |
 625                                         ((colreg & 0x00F0) <<  2) |
 626                                         ((colreg & 0x0F00) >>  7);
 627 #else /* CONFIG_ATMEL_LCD_RGB565 */
 628                         lut_entry = ((colreg & 0x000F) << 1) |
 629                                         ((colreg & 0x00F0) << 3) |
 630                                         ((colreg & 0x0F00) << 4);
 631 #endif
 632                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 633                         cmap++;
 634 #else /* !CONFIG_ATMEL_LCD */
 635 #ifdef  CONFIG_SYS_INVERT_COLORS
 636                         *cmap++ = 0xffff - colreg;
 637 #else
 638                         *cmap++ = colreg;
 639 #endif
 640 #endif /* CONFIG_ATMEL_LCD */
 641                 }
 642
 643                 WATCHDOG_RESET();
 644
 645                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 646                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 647                         bmap += BMP_LOGO_WIDTH;
 648                         fb   += panel_info.vl_col;
 649                 }
 650         }
 651         else { /* true color mode */
 652                 u16 col16;
 653                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 654                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 655                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 656                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 657                                 fb16[j] =
 658                                         ((col16 & 0x000F) << 1) |
 659                                         ((col16 & 0x00F0) << 3) |
 660                                         ((col16 & 0x0F00) << 4);
 661                                 }
 662                         bmap += BMP_LOGO_WIDTH;
 663                         fb16 += panel_info.vl_col;
 664                 }
 665         }
 666
 667         WATCHDOG_RESET();
 668         lcd_sync();
 669 }
 670 #else
 671 static inline void bitmap_plot(int x, int y) {}
 672 #endif /* CONFIG_LCD_LOGO */
 673
 674 /*----------------------------------------------------------------------*/
 675 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 676 /*
 677  * Display the BMP file located at address bmp_image.
 678  * Only uncompressed.
 679  */
 680
 681 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 682 #define BMP_ALIGN_CENTER        0x7FFF
 683
 684 static void splash_align_axis(int *axis, unsigned long panel_size,
 685                                         unsigned long picture_size)
 686 {
 687         unsigned long panel_picture_delta = panel_size - picture_size;
 688         unsigned long axis_alignment;
 689
 690         if (*axis == BMP_ALIGN_CENTER)
 691                 axis_alignment = panel_picture_delta / 2;
 692         else if (*axis < 0)
 693                 axis_alignment = panel_picture_delta + *axis + 1;
 694         else
 695                 return;
 696
 697         *axis = max(0, axis_alignment);
 698 }
 699 #endif
 700
 701
 702 #ifdef CONFIG_LCD_BMP_RLE8
 703
 704 #define BMP_RLE8_ESCAPE         0
 705 #define BMP_RLE8_EOL            0
 706 #define BMP_RLE8_EOBMP          1
 707 #define BMP_RLE8_DELTA          2
 708
 709 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 710                                   int cnt)
 711 {
 712         while (cnt > 0) {
 713                 *(*fbp)++ = cmap[*bmap++];
 714                 cnt--;
 715         }
 716 }
 717
 718 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 719 {
 720         ushort *fb = *fbp;
 721         int cnt_8copy = cnt >> 3;
 722
 723         cnt -= cnt_8copy << 3;
 724         while (cnt_8copy > 0) {
 725                 *fb++ = c;
 726                 *fb++ = c;
 727                 *fb++ = c;
 728                 *fb++ = c;
 729                 *fb++ = c;
 730                 *fb++ = c;
 731                 *fb++ = c;
 732                 *fb++ = c;
 733                 cnt_8copy--;
 734         }
 735         while (cnt > 0) {
 736                 *fb++ = c;
 737                 cnt--;
 738         }
 739         (*fbp) = fb;
 740 }
 741
 742 /*
 743  * Do not call this function directly, must be called from
 744  * lcd_display_bitmap.
 745  */
 746 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 747                                     int x_off, int y_off)
 748 {
 749         uchar *bmap;
 750         ulong width, height;
 751         ulong cnt, runlen;
 752         int x, y;
 753         int decode = 1;
 754
 755         width = le32_to_cpu(bmp->header.width);
 756         height = le32_to_cpu(bmp->header.height);
 757         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 758
 759         x = 0;
 760         y = height - 1;
 761
 762         while (decode) {
 763                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 764                         switch (bmap[1]) {
 765                         case BMP_RLE8_EOL:
 766                                 /* end of line */
 767                                 bmap += 2;
 768                                 x = 0;
 769                                 y--;
 770                                 /* 16bpix, 2-byte per pixel, width should *2 */
 771                                 fb -= (width * 2 + lcd_line_length);
 772                                 break;
 773                         case BMP_RLE8_EOBMP:
 774                                 /* end of bitmap */
 775                                 decode = 0;
 776                                 break;
 777                         case BMP_RLE8_DELTA:
 778                                 /* delta run */
 779                                 x += bmap[2];
 780                                 y -= bmap[3];
 781                                 /* 16bpix, 2-byte per pixel, x should *2 */
 782                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 783                                         * lcd_line_length + (x + x_off) * 2);
 784                                 bmap += 4;
 785                                 break;
 786                         default:
 787                                 /* unencoded run */
 788                                 runlen = bmap[1];
 789                                 bmap += 2;
 790                                 if (y < height) {
 791                                         if (x < width) {
 792                                                 if (x + runlen > width)
 793                                                         cnt = width - x;
 794                                                 else
 795                                                         cnt = runlen;
 796                                                 draw_unencoded_bitmap(
 797                                                         (ushort **)&fb,
 798                                                         bmap, cmap, cnt);
 799                                         }
 800                                         x += runlen;
 801                                 }
 802                                 bmap += runlen;
 803                                 if (runlen & 1)
 804                                         bmap++;
 805                         }
 806                 } else {
 807                         /* encoded run */
 808                         if (y < height) {
 809                                 runlen = bmap[0];
 810                                 if (x < width) {
 811                                         /* aggregate the same code */
 812                                         while (bmap[0] == 0xff &&
 813                                                bmap[2] != BMP_RLE8_ESCAPE &&
 814                                                bmap[1] == bmap[3]) {
 815                                                 runlen += bmap[2];
 816                                                 bmap += 2;
 817                                         }
 818                                         if (x + runlen > width)
 819                                                 cnt = width - x;
 820                                         else
 821                                                 cnt = runlen;
 822                                         draw_encoded_bitmap((ushort **)&fb,
 823                                                 cmap[bmap[1]], cnt);
 824                                 }
 825                                 x += runlen;
 826                         }
 827                         bmap += 2;
 828                 }
 829         }
 830 }
 831 #endif
 832
 833 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 834 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 835 #else
 836 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 837 #endif
 838
 839 #if defined(CONFIG_BMP_16BPP)
 840 #if defined(CONFIG_ATMEL_LCD_BGR555)
 841 static inline void fb_put_word(uchar **fb, uchar **from)
 842 {
 843         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 844         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 845         *from += 2;
 846 }
 847 #else
 848 static inline void fb_put_word(uchar **fb, uchar **from)
 849 {
 850         *(*fb)++ = *(*from)++;
 851         *(*fb)++ = *(*from)++;
 852 }
 853 #endif
 854 #endif /* CONFIG_BMP_16BPP */
 855
 856 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 857 {
 858 #if !defined(CONFIG_MCC200)
 859         ushort *cmap = NULL;
 860 #endif
 861         ushort *cmap_base = NULL;
 862         ushort i, j;
 863         uchar *fb;
 864         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 865         uchar *bmap;
 866         ushort padded_width;
 867         unsigned long width, height, byte_width;
 868         unsigned long pwidth = panel_info.vl_col;
 869         unsigned colors, bpix, bmp_bpix;
 870
 871         if (!bmp || !((bmp->header.signature[0] == 'B') &&
 872                 (bmp->header.signature[1] == 'M'))) {
 873                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 874
 875                 return 1;
 876         }
 877
 878         width = le32_to_cpu(bmp->header.width);
 879         height = le32_to_cpu(bmp->header.height);
 880         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 881         colors = 1 << bmp_bpix;
 882
 883         bpix = NBITS(panel_info.vl_bpix);
 884
 885         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
 886                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 887                         bpix, bmp_bpix);
 888
 889                 return 1;
 890         }
 891
 892         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 893         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 894                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 895                         bpix,
 896                         le16_to_cpu(bmp->header.bit_count));
 897
 898                 return 1;
 899         }
 900
 901         debug("Display-bmp: %d x %d  with %d colors\n",
 902                 (int)width, (int)height, (int)colors);
 903
 904 #if !defined(CONFIG_MCC200)
 905         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 906         if (bmp_bpix == 8) {
 907                 cmap = configuration_get_cmap();
 908                 cmap_base = cmap;
 909
 910                 /* Set color map */
 911                 for (i = 0; i < colors; ++i) {
 912                         bmp_color_table_entry_t cte = bmp->color_table[i];
 913 #if !defined(CONFIG_ATMEL_LCD)
 914                         ushort colreg =
 915                                 ( ((cte.red)   << 8) & 0xf800) |
 916                                 ( ((cte.green) << 3) & 0x07e0) |
 917                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 918 #ifdef CONFIG_SYS_INVERT_COLORS
 919                         *cmap = 0xffff - colreg;
 920 #else
 921                         *cmap = colreg;
 922 #endif
 923 #if defined(CONFIG_MPC823)
 924                         cmap--;
 925 #else
 926                         cmap++;
 927 #endif
 928 #else /* CONFIG_ATMEL_LCD */
 929                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 930 #endif
 931                 }
 932         }
 933 #endif
 934
 935         /*
 936          *  BMP format for Monochrome assumes that the state of a
 937          * pixel is described on a per Bit basis, not per Byte.
 938          *  So, in case of Monochrome BMP we should align widths
 939          * on a byte boundary and convert them from Bit to Byte
 940          * units.
 941          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 942          * their own ways, so make the converting to be MCC200
 943          * specific.
 944          */
 945 #if defined(CONFIG_MCC200)
 946         if (bpix == 1) {
 947                 width = ((width + 7) & ~7) >> 3;
 948                 x     = ((x + 7) & ~7) >> 3;
 949                 pwidth= ((pwidth + 7) & ~7) >> 3;
 950         }
 951 #endif
 952
 953         padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
 954
 955 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 956         splash_align_axis(&x, pwidth, width);
 957         splash_align_axis(&y, panel_info.vl_row, height);
 958 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 959
 960         if ((x + width) > pwidth)
 961                 width = pwidth - x;
 962         if ((y + height) > panel_info.vl_row)
 963                 height = panel_info.vl_row - y;
 964
 965         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 966         fb   = (uchar *) (lcd_base +
 967                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 968
 969         switch (bmp_bpix) {
 970         case 1: /* pass through */
 971         case 8:
 972 #ifdef CONFIG_LCD_BMP_RLE8
 973                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 974                         if (bpix != 16) {
 975                                 /* TODO implement render code for bpix != 16 */
 976                                 printf("Error: only support 16 bpix");
 977                                 return 1;
 978                         }
 979                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 980                         break;
 981                 }
 982 #endif
 983
 984                 if (bpix != 16)
 985                         byte_width = width;
 986                 else
 987                         byte_width = width * 2;
 988
 989                 for (i = 0; i < height; ++i) {
 990                         WATCHDOG_RESET();
 991                         for (j = 0; j < width; j++) {
 992                                 if (bpix != 16) {
 993                                         FB_PUT_BYTE(fb, bmap);
 994                                 } else {
 995                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 996                                         fb += sizeof(uint16_t) / sizeof(*fb);
 997                                 }
 998                         }
 999                         bmap += (padded_width - width);
1000                         fb   -= (byte_width + lcd_line_length);
1001                 }
1002                 break;
1003
1004 #if defined(CONFIG_BMP_16BPP)
1005         case 16:
1006                 for (i = 0; i < height; ++i) {
1007                         WATCHDOG_RESET();
1008                         for (j = 0; j < width; j++)
1009                                 fb_put_word(&fb, &bmap);
1010
1011                         bmap += (padded_width - width) * 2;
1012                         fb   -= (width * 2 + lcd_line_length);
1013                 }
1014                 break;
1015 #endif /* CONFIG_BMP_16BPP */
1016
1017 #if defined(CONFIG_BMP_32BPP)
1018         case 32:
1019                 for (i = 0; i < height; ++i) {
1020                         for (j = 0; j < width; j++) {
1021                                 *(fb++) = *(bmap++);
1022                                 *(fb++) = *(bmap++);
1023                                 *(fb++) = *(bmap++);
1024                                 *(fb++) = *(bmap++);
1025                         }
1026                         fb  -= (lcd_line_length + width * (bpix / 8));
1027                 }
1028                 break;
1029 #endif /* CONFIG_BMP_32BPP */
1030         default:
1031                 break;
1032         };
1033
1034         lcd_sync();
1035         return 0;
1036 }
1037 #endif
1038
1039 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1040 static inline int splash_screen_prepare(void)
1041 {
1042         return board_splash_screen_prepare();
1043 }
1044 #else
1045 static inline int splash_screen_prepare(void)
1046 {
1047         return 0;
1048 }
1049 #endif
1050
1051 static void *lcd_logo(void)
1052 {
1053 #ifdef CONFIG_SPLASH_SCREEN
1054         char *s;
1055         ulong addr;
1056         static int do_splash = 1;
1057
1058         if (do_splash && (s = getenv("splashimage")) != NULL) {
1059                 int x = 0, y = 0;
1060                 do_splash = 0;
1061
1062                 if (splash_screen_prepare())
1063                         return (void *)gd->fb_base;
1064
1065                 addr = simple_strtoul (s, NULL, 16);
1066 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1067                 s = getenv("splashpos");
1068                 if (s != NULL) {
1069                         if (s[0] == 'm')
1070                                 x = BMP_ALIGN_CENTER;
1071                         else
1072                                 x = simple_strtol(s, NULL, 0);
1073
1074                         s = strchr(s + 1, ',');
1075                         if (s != NULL) {
1076                                 if (s[1] == 'm')
1077                                         y = BMP_ALIGN_CENTER;
1078                                 else
1079                                         y = simple_strtol (s + 1, NULL, 0);
1080                         }
1081                 }
1082 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1083
1084                 if (bmp_display(addr, x, y) == 0)
1085                         return (void *)lcd_base;
1086         }
1087 #endif /* CONFIG_SPLASH_SCREEN */
1088
1089         bitmap_plot(0, 0);
1090
1091 #ifdef CONFIG_LCD_INFO
1092         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1093         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1094         lcd_show_board_info();
1095 #endif /* CONFIG_LCD_INFO */
1096
1097 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1098         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1099 #else
1100         return (void *)lcd_base;
1101 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1102 }
1103
1104 #ifdef CONFIG_SPLASHIMAGE_GUARD
1105 static int on_splashimage(const char *name, const char *value, enum env_op op,
1106         int flags)
1107 {
1108         ulong addr;
1109         int aligned;
1110
1111         if (op == env_op_delete)
1112                 return 0;
1113
1114         addr = simple_strtoul(value, NULL, 16);
1115         /* See README.displaying-bmps */
1116         aligned = (addr % 4 == 2);
1117         if (!aligned) {
1118                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1119                 return -1;
1120         }
1121
1122         return 0;
1123 }
1124
1125 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1126 #endif
1127
1128 void lcd_position_cursor(unsigned col, unsigned row)
1129 {
1130         console_col = min(col, CONSOLE_COLS - 1);
1131         console_row = min(row, CONSOLE_ROWS - 1);
1132 }
1133
1134 int lcd_get_pixel_width(void)
1135 {
1136         return panel_info.vl_col;
1137 }
1138
1139 int lcd_get_pixel_height(void)
1140 {
1141         return panel_info.vl_row;
1142 }
1143
1144 int lcd_get_screen_rows(void)
1145 {
1146         return CONSOLE_ROWS;
1147 }
1148
1149 int lcd_get_screen_columns(void)
1150 {
1151         return CONSOLE_COLS;
1152 }
1153
1154 /************************************************************************/
1155 /************************************************************************/