common/lcd.c

   1 /*
   2  * Common LCD routines for supported CPUs
   3  *
   4  * (C) Copyright 2001-2002
   5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 /************************************************************************/
  27 /* ** HEADER FILES                                                      */
  28 /************************************************************************/
  29
  30 /* #define DEBUG */
  31
  32 #include <config.h>
  33 #include <common.h>
  34 #include <command.h>
  35 #include <stdarg.h>
  36 #include <search.h>
  37 #include <env_callback.h>
  38 #include <linux/types.h>
  39 #include <stdio_dev.h>
  40 #if defined(CONFIG_POST)
  41 #include <post.h>
  42 #endif
  43 #include <lcd.h>
  44 #include <watchdog.h>
  45
  46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  47         defined(CONFIG_CPU_MONAHANS)
  48 #define CONFIG_CPU_PXA
  49 #include <asm/byteorder.h>
  50 #endif
  51
  52 #if defined(CONFIG_MPC823)
  53 #include <lcdvideo.h>
  54 #endif
  55
  56 #if defined(CONFIG_ATMEL_LCD)
  57 #include <atmel_lcdc.h>
  58 #endif
  59
  60 /************************************************************************/
  61 /* ** FONT DATA                                                         */
  62 /************************************************************************/
  63 #include <video_font.h>         /* Get font data, width and height      */
  64 #include <video_font_data.h>
  65
  66 /************************************************************************/
  67 /* ** LOGO DATA                                                         */
  68 /************************************************************************/
  69 #ifdef CONFIG_LCD_LOGO
  70 # include <bmp_logo.h>          /* Get logo data, width and height      */
  71 # include <bmp_logo_data.h>
  72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  73 #  error Default Color Map overlaps with Logo Color Map
  74 # endif
  75 #endif
  76
  77 #ifndef CONFIG_LCD_ALIGNMENT
  78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  79 #endif
  80
  81 /* By default we scroll by a single line */
  82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  83 #define CONFIG_CONSOLE_SCROLL_LINES 1
  84 #endif
  85
  86 DECLARE_GLOBAL_DATA_PTR;
  87
  88 ulong lcd_setmem (ulong addr);
  89
  90 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
  91 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
  92 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
  93
  94 static int lcd_init(void *lcdbase);
  95
  96 static void *lcd_logo (void);
  97
  98 static int lcd_getbgcolor(void);
  99 static void lcd_setfgcolor(int color);
 100 static void lcd_setbgcolor(int color);
 101
 102 static int lcd_color_fg;
 103 static int lcd_color_bg;
 104 int lcd_line_length;
 105
 106 char lcd_is_enabled = 0;
 107
 108 static short console_col;
 109 static short console_row;
 110
 111 static void *lcd_console_address;
 112 static void *lcd_base;                  /* Start of framebuffer memory  */
 113
 114 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 115
 116
 117 #ifdef  NOT_USED_SO_FAR
 118 static void lcd_getcolreg(ushort regno,
 119                                 ushort *red, ushort *green, ushort *blue);
 120 static int lcd_getfgcolor(void);
 121 #endif  /* NOT_USED_SO_FAR */
 122
 123 /************************************************************************/
 124
 125 /* Flush LCD activity to the caches */
 126 void lcd_sync(void)
 127 {
 128         /*
 129          * flush_dcache_range() is declared in common.h but it seems that some
 130          * architectures do not actually implement it. Is there a way to find
 131          * out whether it exists? For now, ARM is safe.
 132          */
 133 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 134         int line_length;
 135
 136         if (lcd_flush_dcache)
 137                 flush_dcache_range((u32)lcd_base,
 138                         (u32)(lcd_base + lcd_get_size(&line_length)));
 139 #endif
 140 }
 141
 142 void lcd_set_flush_dcache(int flush)
 143 {
 144         lcd_flush_dcache = (flush != 0);
 145 }
 146
 147 /*----------------------------------------------------------------------*/
 148
 149 static void console_scrollup(void)
 150 {
 151         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 152
 153         /* Copy up rows ignoring those that will be overwritten */
 154         memcpy(CONSOLE_ROW_FIRST,
 155                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 156                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 157
 158         /* Clear the last rows */
 159         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 160                 COLOR_MASK(lcd_color_bg),
 161                CONSOLE_ROW_SIZE * rows);
 162
 163         lcd_sync();
 164         console_row -= rows;
 165 }
 166
 167 /*----------------------------------------------------------------------*/
 168
 169 static inline void console_back(void)
 170 {
 171         if (--console_col < 0) {
 172                 console_col = CONSOLE_COLS-1 ;
 173                 if (--console_row < 0) {
 174                         console_row = 0;
 175                 }
 176         }
 177
 178         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 179                 console_row * VIDEO_FONT_HEIGHT, ' ');
 180 }
 181
 182 /*----------------------------------------------------------------------*/
 183
 184 static inline void console_newline(void)
 185 {
 186         ++console_row;
 187         console_col = 0;
 188
 189         /* Check if we need to scroll the terminal */
 190         if (console_row >= CONSOLE_ROWS) {
 191                 /* Scroll everything up */
 192                 console_scrollup();
 193         } else {
 194                 lcd_sync();
 195         }
 196 }
 197
 198 /*----------------------------------------------------------------------*/
 199
 200 void lcd_putc(const char c)
 201 {
 202         if (!lcd_is_enabled) {
 203                 serial_putc(c);
 204
 205                 return;
 206         }
 207
 208         switch (c) {
 209         case '\r':
 210                 console_col = 0;
 211
 212                 return;
 213         case '\n':
 214                 console_newline();
 215
 216                 return;
 217         case '\t':      /* Tab (8 chars alignment) */
 218                 console_col +=  8;
 219                 console_col &= ~7;
 220
 221                 if (console_col >= CONSOLE_COLS)
 222                         console_newline();
 223
 224                 return;
 225         case '\b':
 226                 console_back();
 227
 228                 return;
 229         default:
 230                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 231                         console_row * VIDEO_FONT_HEIGHT, c);
 232                 if (++console_col >= CONSOLE_COLS)
 233                         console_newline();
 234         }
 235 }
 236
 237 /*----------------------------------------------------------------------*/
 238
 239 void lcd_puts(const char *s)
 240 {
 241         if (!lcd_is_enabled) {
 242                 serial_puts(s);
 243
 244                 return;
 245         }
 246
 247         while (*s) {
 248                 lcd_putc(*s++);
 249         }
 250         lcd_sync();
 251 }
 252
 253 /*----------------------------------------------------------------------*/
 254
 255 void lcd_printf(const char *fmt, ...)
 256 {
 257         va_list args;
 258         char buf[CONFIG_SYS_PBSIZE];
 259
 260         va_start(args, fmt);
 261         vsprintf(buf, fmt, args);
 262         va_end(args);
 263
 264         lcd_puts(buf);
 265 }
 266
 267 /************************************************************************/
 268 /* ** Low-Level Graphics Routines                                       */
 269 /************************************************************************/
 270
 271 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 272 {
 273         uchar *dest;
 274         ushort row;
 275
 276 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 277         y += BMP_LOGO_HEIGHT;
 278 #endif
 279
 280 #if LCD_BPP == LCD_MONOCHROME
 281         ushort off  = x * (1 << LCD_BPP) % 8;
 282 #endif
 283
 284         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 285
 286         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 287                 uchar *s = str;
 288                 int i;
 289 #if LCD_BPP == LCD_COLOR16
 290                 ushort *d = (ushort *)dest;
 291 #else
 292                 uchar *d = dest;
 293 #endif
 294
 295 #if LCD_BPP == LCD_MONOCHROME
 296                 uchar rest = *d & -(1 << (8-off));
 297                 uchar sym;
 298 #endif
 299                 for (i = 0; i < count; ++i) {
 300                         uchar c, bits;
 301
 302                         c = *s++;
 303                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 304
 305 #if LCD_BPP == LCD_MONOCHROME
 306                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 307                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 308
 309                         *d++ = rest | (sym >> off);
 310                         rest = sym << (8-off);
 311 #elif LCD_BPP == LCD_COLOR8
 312                         for (c = 0; c < 8; ++c) {
 313                                 *d++ = (bits & 0x80) ?
 314                                                 lcd_color_fg : lcd_color_bg;
 315                                 bits <<= 1;
 316                         }
 317 #elif LCD_BPP == LCD_COLOR16
 318                         for (c = 0; c < 8; ++c) {
 319                                 *d++ = (bits & 0x80) ?
 320                                                 lcd_color_fg : lcd_color_bg;
 321                                 bits <<= 1;
 322                         }
 323 #endif
 324                 }
 325 #if LCD_BPP == LCD_MONOCHROME
 326                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 327 #endif
 328         }
 329 }
 330
 331 /*----------------------------------------------------------------------*/
 332
 333 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 334 {
 335         lcd_drawchars(x, y, s, strlen((char *)s));
 336 }
 337
 338 /*----------------------------------------------------------------------*/
 339
 340 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 341 {
 342         lcd_drawchars(x, y, &c, 1);
 343 }
 344
 345 /************************************************************************/
 346 /**  Small utility to check that you got the colours right              */
 347 /************************************************************************/
 348 #ifdef LCD_TEST_PATTERN
 349
 350 #define N_BLK_VERT      2
 351 #define N_BLK_HOR       3
 352
 353 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 354         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 355         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 356 };
 357
 358 static void test_pattern(void)
 359 {
 360         ushort v_max  = panel_info.vl_row;
 361         ushort h_max  = panel_info.vl_col;
 362         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 363         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 364         ushort v, h;
 365         uchar *pix = (uchar *)lcd_base;
 366
 367         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 368                 h_max, v_max, h_step, v_step);
 369
 370         /* WARNING: Code silently assumes 8bit/pixel */
 371         for (v = 0; v < v_max; ++v) {
 372                 uchar iy = v / v_step;
 373                 for (h = 0; h < h_max; ++h) {
 374                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 375                         *pix++ = test_colors[ix];
 376                 }
 377         }
 378 }
 379 #endif /* LCD_TEST_PATTERN */
 380
 381
 382 /************************************************************************/
 383 /* ** GENERIC Initialization Routines                                   */
 384 /************************************************************************/
 385
 386 int lcd_get_size(int *line_length)
 387 {
 388         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 389         return *line_length * panel_info.vl_row;
 390 }
 391
 392 int drv_lcd_init (void)
 393 {
 394         struct stdio_dev lcddev;
 395         int rc;
 396
 397         lcd_base = (void *)(gd->fb_base);
 398
 399         lcd_get_size(&lcd_line_length);
 400
 401         lcd_init(lcd_base);             /* LCD initialization */
 402
 403         /* Device initialization */
 404         memset(&lcddev, 0, sizeof(lcddev));
 405
 406         strcpy(lcddev.name, "lcd");
 407         lcddev.ext   = 0;                       /* No extensions */
 408         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 409         lcddev.putc  = lcd_putc;                /* 'putc' function */
 410         lcddev.puts  = lcd_puts;                /* 'puts' function */
 411
 412         rc = stdio_register (&lcddev);
 413
 414         return (rc == 0) ? 1 : rc;
 415 }
 416
 417 /*----------------------------------------------------------------------*/
 418 void lcd_clear(void)
 419 {
 420 #if LCD_BPP == LCD_MONOCHROME
 421         /* Setting the palette */
 422         lcd_initcolregs();
 423
 424 #elif LCD_BPP == LCD_COLOR8
 425         /* Setting the palette */
 426         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 427         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 428         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 429         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 430         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 431         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 432         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 433         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 434         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 435 #endif
 436
 437 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 438         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 439         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 440 #else
 441         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 442         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 443 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 444
 445 #ifdef  LCD_TEST_PATTERN
 446         test_pattern();
 447 #else
 448         /* set framebuffer to background color */
 449         memset((char *)lcd_base,
 450                 COLOR_MASK(lcd_getbgcolor()),
 451                 lcd_line_length*panel_info.vl_row);
 452 #endif
 453         /* Paint the logo and retrieve LCD base address */
 454         debug("[LCD] Drawing the logo...\n");
 455         lcd_console_address = lcd_logo ();
 456
 457         console_col = 0;
 458         console_row = 0;
 459         lcd_sync();
 460 }
 461
 462 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 463                         char *const argv[])
 464 {
 465         lcd_clear();
 466         return 0;
 467 }
 468
 469 U_BOOT_CMD(
 470         cls,    1,      1,      do_lcd_clear,
 471         "clear screen",
 472         ""
 473 );
 474
 475 /*----------------------------------------------------------------------*/
 476
 477 static int lcd_init(void *lcdbase)
 478 {
 479         /* Initialize the lcd controller */
 480         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 481
 482         lcd_ctrl_init(lcdbase);
 483         lcd_is_enabled = 1;
 484         lcd_clear();
 485         lcd_enable ();
 486
 487         /* Initialize the console */
 488         console_col = 0;
 489 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 490         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 491 #else
 492         console_row = 1;        /* leave 1 blank line below logo */
 493 #endif
 494
 495         return 0;
 496 }
 497
 498
 499 /************************************************************************/
 500 /* ** ROM capable initialization part - needed to reserve FB memory     */
 501 /************************************************************************/
 502 /*
 503  * This is called early in the system initialization to grab memory
 504  * for the LCD controller.
 505  * Returns new address for monitor, after reserving LCD buffer memory
 506  *
 507  * Note that this is running from ROM, so no write access to global data.
 508  */
 509 ulong lcd_setmem(ulong addr)
 510 {
 511         ulong size;
 512         int line_length;
 513
 514         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 515                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 516
 517         size = lcd_get_size(&line_length);
 518
 519         /* Round up to nearest full page, or MMU section if defined */
 520         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 521         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 522
 523         /* Allocate pages for the frame buffer. */
 524         addr -= size;
 525
 526         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 527
 528         return addr;
 529 }
 530
 531 /*----------------------------------------------------------------------*/
 532
 533 static void lcd_setfgcolor(int color)
 534 {
 535         lcd_color_fg = color;
 536 }
 537
 538 /*----------------------------------------------------------------------*/
 539
 540 static void lcd_setbgcolor(int color)
 541 {
 542         lcd_color_bg = color;
 543 }
 544
 545 /*----------------------------------------------------------------------*/
 546
 547 int lcd_getfgcolor(void)
 548 {
 549         return lcd_color_fg;
 550 }
 551
 552 /*----------------------------------------------------------------------*/
 553
 554 static int lcd_getbgcolor(void)
 555 {
 556         return lcd_color_bg;
 557 }
 558
 559 /*----------------------------------------------------------------------*/
 560
 561 /************************************************************************/
 562 /* ** Chipset depending Bitmap / Logo stuff...                          */
 563 /************************************************************************/
 564 static inline ushort *configuration_get_cmap(void)
 565 {
 566 #if defined CONFIG_CPU_PXA
 567         struct pxafb_info *fbi = &panel_info.pxa;
 568         return (ushort *)fbi->palette;
 569 #elif defined(CONFIG_MPC823)
 570         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 571         cpm8xx_t *cp = &(immr->im_cpm);
 572         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 573 #elif defined(CONFIG_ATMEL_LCD)
 574         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 575 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 576         return panel_info.cmap;
 577 #else
 578 #if defined(CONFIG_LCD_LOGO)
 579         return bmp_logo_palette;
 580 #else
 581         return NULL;
 582 #endif
 583 #endif
 584 }
 585
 586 #ifdef CONFIG_LCD_LOGO
 587 void bitmap_plot(int x, int y)
 588 {
 589 #ifdef CONFIG_ATMEL_LCD
 590         uint *cmap = (uint *)bmp_logo_palette;
 591 #else
 592         ushort *cmap = (ushort *)bmp_logo_palette;
 593 #endif
 594         ushort i, j;
 595         uchar *bmap;
 596         uchar *fb;
 597         ushort *fb16;
 598 #if defined(CONFIG_MPC823)
 599         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 600         cpm8xx_t *cp = &(immr->im_cpm);
 601 #endif
 602
 603         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 604                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 605                 ARRAY_SIZE(bmp_logo_palette));
 606
 607         bmap = &bmp_logo_bitmap[0];
 608         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 609
 610         if (NBITS(panel_info.vl_bpix) < 12) {
 611                 /* Leave room for default color map
 612                  * default case: generic system with no cmap (most likely 16bpp)
 613                  * cmap was set to the source palette, so no change is done.
 614                  * This avoids even more ifdefs in the next stanza
 615                  */
 616 #if defined(CONFIG_MPC823)
 617                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 618 #elif defined(CONFIG_ATMEL_LCD)
 619                 cmap = (uint *)configuration_get_cmap();
 620 #else
 621                 cmap = configuration_get_cmap();
 622 #endif
 623
 624                 WATCHDOG_RESET();
 625
 626                 /* Set color map */
 627                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 628                         ushort colreg = bmp_logo_palette[i];
 629 #ifdef CONFIG_ATMEL_LCD
 630                         uint lut_entry;
 631 #ifdef CONFIG_ATMEL_LCD_BGR555
 632                         lut_entry = ((colreg & 0x000F) << 11) |
 633                                         ((colreg & 0x00F0) <<  2) |
 634                                         ((colreg & 0x0F00) >>  7);
 635 #else /* CONFIG_ATMEL_LCD_RGB565 */
 636                         lut_entry = ((colreg & 0x000F) << 1) |
 637                                         ((colreg & 0x00F0) << 3) |
 638                                         ((colreg & 0x0F00) << 4);
 639 #endif
 640                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 641                         cmap++;
 642 #else /* !CONFIG_ATMEL_LCD */
 643 #ifdef  CONFIG_SYS_INVERT_COLORS
 644                         *cmap++ = 0xffff - colreg;
 645 #else
 646                         *cmap++ = colreg;
 647 #endif
 648 #endif /* CONFIG_ATMEL_LCD */
 649                 }
 650
 651                 WATCHDOG_RESET();
 652
 653                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 654                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 655                         bmap += BMP_LOGO_WIDTH;
 656                         fb   += panel_info.vl_col;
 657                 }
 658         }
 659         else { /* true color mode */
 660                 u16 col16;
 661                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 662                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 663                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 664                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 665                                 fb16[j] =
 666                                         ((col16 & 0x000F) << 1) |
 667                                         ((col16 & 0x00F0) << 3) |
 668                                         ((col16 & 0x0F00) << 4);
 669                                 }
 670                         bmap += BMP_LOGO_WIDTH;
 671                         fb16 += panel_info.vl_col;
 672                 }
 673         }
 674
 675         WATCHDOG_RESET();
 676         lcd_sync();
 677 }
 678 #else
 679 static inline void bitmap_plot(int x, int y) {}
 680 #endif /* CONFIG_LCD_LOGO */
 681
 682 /*----------------------------------------------------------------------*/
 683 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 684 /*
 685  * Display the BMP file located at address bmp_image.
 686  * Only uncompressed.
 687  */
 688
 689 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 690 #define BMP_ALIGN_CENTER        0x7FFF
 691
 692 static void splash_align_axis(int *axis, unsigned long panel_size,
 693                                         unsigned long picture_size)
 694 {
 695         unsigned long panel_picture_delta = panel_size - picture_size;
 696         unsigned long axis_alignment;
 697
 698         if (*axis == BMP_ALIGN_CENTER)
 699                 axis_alignment = panel_picture_delta / 2;
 700         else if (*axis < 0)
 701                 axis_alignment = panel_picture_delta + *axis + 1;
 702         else
 703                 return;
 704
 705         *axis = max(0, axis_alignment);
 706 }
 707 #endif
 708
 709
 710 #ifdef CONFIG_LCD_BMP_RLE8
 711
 712 #define BMP_RLE8_ESCAPE         0
 713 #define BMP_RLE8_EOL            0
 714 #define BMP_RLE8_EOBMP          1
 715 #define BMP_RLE8_DELTA          2
 716
 717 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 718                                   int cnt)
 719 {
 720         while (cnt > 0) {
 721                 *(*fbp)++ = cmap[*bmap++];
 722                 cnt--;
 723         }
 724 }
 725
 726 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 727 {
 728         ushort *fb = *fbp;
 729         int cnt_8copy = cnt >> 3;
 730
 731         cnt -= cnt_8copy << 3;
 732         while (cnt_8copy > 0) {
 733                 *fb++ = c;
 734                 *fb++ = c;
 735                 *fb++ = c;
 736                 *fb++ = c;
 737                 *fb++ = c;
 738                 *fb++ = c;
 739                 *fb++ = c;
 740                 *fb++ = c;
 741                 cnt_8copy--;
 742         }
 743         while (cnt > 0) {
 744                 *fb++ = c;
 745                 cnt--;
 746         }
 747         (*fbp) = fb;
 748 }
 749
 750 /*
 751  * Do not call this function directly, must be called from
 752  * lcd_display_bitmap.
 753  */
 754 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 755                                     int x_off, int y_off)
 756 {
 757         uchar *bmap;
 758         ulong width, height;
 759         ulong cnt, runlen;
 760         int x, y;
 761         int decode = 1;
 762
 763         width = le32_to_cpu(bmp->header.width);
 764         height = le32_to_cpu(bmp->header.height);
 765         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 766
 767         x = 0;
 768         y = height - 1;
 769
 770         while (decode) {
 771                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 772                         switch (bmap[1]) {
 773                         case BMP_RLE8_EOL:
 774                                 /* end of line */
 775                                 bmap += 2;
 776                                 x = 0;
 777                                 y--;
 778                                 /* 16bpix, 2-byte per pixel, width should *2 */
 779                                 fb -= (width * 2 + lcd_line_length);
 780                                 break;
 781                         case BMP_RLE8_EOBMP:
 782                                 /* end of bitmap */
 783                                 decode = 0;
 784                                 break;
 785                         case BMP_RLE8_DELTA:
 786                                 /* delta run */
 787                                 x += bmap[2];
 788                                 y -= bmap[3];
 789                                 /* 16bpix, 2-byte per pixel, x should *2 */
 790                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 791                                         * lcd_line_length + (x + x_off) * 2);
 792                                 bmap += 4;
 793                                 break;
 794                         default:
 795                                 /* unencoded run */
 796                                 runlen = bmap[1];
 797                                 bmap += 2;
 798                                 if (y < height) {
 799                                         if (x < width) {
 800                                                 if (x + runlen > width)
 801                                                         cnt = width - x;
 802                                                 else
 803                                                         cnt = runlen;
 804                                                 draw_unencoded_bitmap(
 805                                                         (ushort **)&fb,
 806                                                         bmap, cmap, cnt);
 807                                         }
 808                                         x += runlen;
 809                                 }
 810                                 bmap += runlen;
 811                                 if (runlen & 1)
 812                                         bmap++;
 813                         }
 814                 } else {
 815                         /* encoded run */
 816                         if (y < height) {
 817                                 runlen = bmap[0];
 818                                 if (x < width) {
 819                                         /* aggregate the same code */
 820                                         while (bmap[0] == 0xff &&
 821                                                bmap[2] != BMP_RLE8_ESCAPE &&
 822                                                bmap[1] == bmap[3]) {
 823                                                 runlen += bmap[2];
 824                                                 bmap += 2;
 825                                         }
 826                                         if (x + runlen > width)
 827                                                 cnt = width - x;
 828                                         else
 829                                                 cnt = runlen;
 830                                         draw_encoded_bitmap((ushort **)&fb,
 831                                                 cmap[bmap[1]], cnt);
 832                                 }
 833                                 x += runlen;
 834                         }
 835                         bmap += 2;
 836                 }
 837         }
 838 }
 839 #endif
 840
 841 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 842 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 843 #else
 844 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 845 #endif
 846
 847 #if defined(CONFIG_BMP_16BPP)
 848 #if defined(CONFIG_ATMEL_LCD_BGR555)
 849 static inline void fb_put_word(uchar **fb, uchar **from)
 850 {
 851         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 852         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 853         *from += 2;
 854 }
 855 #else
 856 static inline void fb_put_word(uchar **fb, uchar **from)
 857 {
 858         *(*fb)++ = *(*from)++;
 859         *(*fb)++ = *(*from)++;
 860 }
 861 #endif
 862 #endif /* CONFIG_BMP_16BPP */
 863
 864 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 865 {
 866 #if !defined(CONFIG_MCC200)
 867         ushort *cmap = NULL;
 868 #endif
 869         ushort *cmap_base = NULL;
 870         ushort i, j;
 871         uchar *fb;
 872         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 873         uchar *bmap;
 874         ushort padded_width;
 875         unsigned long width, height, byte_width;
 876         unsigned long pwidth = panel_info.vl_col;
 877         unsigned colors, bpix, bmp_bpix;
 878
 879         if (!bmp || !((bmp->header.signature[0] == 'B') &&
 880                 (bmp->header.signature[1] == 'M'))) {
 881                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 882
 883                 return 1;
 884         }
 885
 886         width = le32_to_cpu(bmp->header.width);
 887         height = le32_to_cpu(bmp->header.height);
 888         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 889         colors = 1 << bmp_bpix;
 890
 891         bpix = NBITS(panel_info.vl_bpix);
 892
 893         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
 894                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 895                         bpix, bmp_bpix);
 896
 897                 return 1;
 898         }
 899
 900         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 901         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 902                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 903                         bpix,
 904                         le16_to_cpu(bmp->header.bit_count));
 905
 906                 return 1;
 907         }
 908
 909         debug("Display-bmp: %d x %d  with %d colors\n",
 910                 (int)width, (int)height, (int)colors);
 911
 912 #if !defined(CONFIG_MCC200)
 913         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 914         if (bmp_bpix == 8) {
 915                 cmap = configuration_get_cmap();
 916                 cmap_base = cmap;
 917
 918                 /* Set color map */
 919                 for (i = 0; i < colors; ++i) {
 920                         bmp_color_table_entry_t cte = bmp->color_table[i];
 921 #if !defined(CONFIG_ATMEL_LCD)
 922                         ushort colreg =
 923                                 ( ((cte.red)   << 8) & 0xf800) |
 924                                 ( ((cte.green) << 3) & 0x07e0) |
 925                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 926 #ifdef CONFIG_SYS_INVERT_COLORS
 927                         *cmap = 0xffff - colreg;
 928 #else
 929                         *cmap = colreg;
 930 #endif
 931 #if defined(CONFIG_MPC823)
 932                         cmap--;
 933 #else
 934                         cmap++;
 935 #endif
 936 #else /* CONFIG_ATMEL_LCD */
 937                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 938 #endif
 939                 }
 940         }
 941 #endif
 942
 943         /*
 944          *  BMP format for Monochrome assumes that the state of a
 945          * pixel is described on a per Bit basis, not per Byte.
 946          *  So, in case of Monochrome BMP we should align widths
 947          * on a byte boundary and convert them from Bit to Byte
 948          * units.
 949          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 950          * their own ways, so make the converting to be MCC200
 951          * specific.
 952          */
 953 #if defined(CONFIG_MCC200)
 954         if (bpix == 1) {
 955                 width = ((width + 7) & ~7) >> 3;
 956                 x     = ((x + 7) & ~7) >> 3;
 957                 pwidth= ((pwidth + 7) & ~7) >> 3;
 958         }
 959 #endif
 960
 961         padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
 962
 963 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 964         splash_align_axis(&x, pwidth, width);
 965         splash_align_axis(&y, panel_info.vl_row, height);
 966 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 967
 968         if ((x + width) > pwidth)
 969                 width = pwidth - x;
 970         if ((y + height) > panel_info.vl_row)
 971                 height = panel_info.vl_row - y;
 972
 973         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 974         fb   = (uchar *) (lcd_base +
 975                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 976
 977         switch (bmp_bpix) {
 978         case 1: /* pass through */
 979         case 8:
 980 #ifdef CONFIG_LCD_BMP_RLE8
 981                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 982                         if (bpix != 16) {
 983                                 /* TODO implement render code for bpix != 16 */
 984                                 printf("Error: only support 16 bpix");
 985                                 return 1;
 986                         }
 987                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 988                         break;
 989                 }
 990 #endif
 991
 992                 if (bpix != 16)
 993                         byte_width = width;
 994                 else
 995                         byte_width = width * 2;
 996
 997                 for (i = 0; i < height; ++i) {
 998                         WATCHDOG_RESET();
 999                         for (j = 0; j < width; j++) {
1000                                 if (bpix != 16) {
1001                                         FB_PUT_BYTE(fb, bmap);
1002                                 } else {
1003                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1004                                         fb += sizeof(uint16_t) / sizeof(*fb);
1005                                 }
1006                         }
1007                         bmap += (padded_width - width);
1008                         fb   -= (byte_width + lcd_line_length);
1009                 }
1010                 break;
1011
1012 #if defined(CONFIG_BMP_16BPP)
1013         case 16:
1014                 for (i = 0; i < height; ++i) {
1015                         WATCHDOG_RESET();
1016                         for (j = 0; j < width; j++)
1017                                 fb_put_word(&fb, &bmap);
1018
1019                         bmap += (padded_width - width) * 2;
1020                         fb   -= (width * 2 + lcd_line_length);
1021                 }
1022                 break;
1023 #endif /* CONFIG_BMP_16BPP */
1024
1025 #if defined(CONFIG_BMP_32BPP)
1026         case 32:
1027                 for (i = 0; i < height; ++i) {
1028                         for (j = 0; j < width; j++) {
1029                                 *(fb++) = *(bmap++);
1030                                 *(fb++) = *(bmap++);
1031                                 *(fb++) = *(bmap++);
1032                                 *(fb++) = *(bmap++);
1033                         }
1034                         fb  -= (lcd_line_length + width * (bpix / 8));
1035                 }
1036                 break;
1037 #endif /* CONFIG_BMP_32BPP */
1038         default:
1039                 break;
1040         };
1041
1042         lcd_sync();
1043         return 0;
1044 }
1045 #endif
1046
1047 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1048 static inline int splash_screen_prepare(void)
1049 {
1050         return board_splash_screen_prepare();
1051 }
1052 #else
1053 static inline int splash_screen_prepare(void)
1054 {
1055         return 0;
1056 }
1057 #endif
1058
1059 static void *lcd_logo(void)
1060 {
1061 #ifdef CONFIG_SPLASH_SCREEN
1062         char *s;
1063         ulong addr;
1064         static int do_splash = 1;
1065
1066         if (do_splash && (s = getenv("splashimage")) != NULL) {
1067                 int x = 0, y = 0;
1068                 do_splash = 0;
1069
1070                 if (splash_screen_prepare())
1071                         return (void *)gd->fb_base;
1072
1073                 addr = simple_strtoul (s, NULL, 16);
1074 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1075                 s = getenv("splashpos");
1076                 if (s != NULL) {
1077                         if (s[0] == 'm')
1078                                 x = BMP_ALIGN_CENTER;
1079                         else
1080                                 x = simple_strtol(s, NULL, 0);
1081
1082                         s = strchr(s + 1, ',');
1083                         if (s != NULL) {
1084                                 if (s[1] == 'm')
1085                                         y = BMP_ALIGN_CENTER;
1086                                 else
1087                                         y = simple_strtol (s + 1, NULL, 0);
1088                         }
1089                 }
1090 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1091
1092                 if (bmp_display(addr, x, y) == 0)
1093                         return (void *)lcd_base;
1094         }
1095 #endif /* CONFIG_SPLASH_SCREEN */
1096
1097         bitmap_plot(0, 0);
1098
1099 #ifdef CONFIG_LCD_INFO
1100         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1101         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1102         lcd_show_board_info();
1103 #endif /* CONFIG_LCD_INFO */
1104
1105 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1106         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1107 #else
1108         return (void *)lcd_base;
1109 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1110 }
1111
1112 #ifdef CONFIG_SPLASHIMAGE_GUARD
1113 static int on_splashimage(const char *name, const char *value, enum env_op op,
1114         int flags)
1115 {
1116         ulong addr;
1117         int aligned;
1118
1119         if (op == env_op_delete)
1120                 return 0;
1121
1122         addr = simple_strtoul(value, NULL, 16);
1123         /* See README.displaying-bmps */
1124         aligned = (addr % 4 == 2);
1125         if (!aligned) {
1126                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1127                 return -1;
1128         }
1129
1130         return 0;
1131 }
1132
1133 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1134 #endif
1135
1136 void lcd_position_cursor(unsigned col, unsigned row)
1137 {
1138         console_col = min(col, CONSOLE_COLS - 1);
1139         console_row = min(row, CONSOLE_ROWS - 1);
1140 }
1141
1142 int lcd_get_pixel_width(void)
1143 {
1144         return panel_info.vl_col;
1145 }
1146
1147 int lcd_get_pixel_height(void)
1148 {
1149         return panel_info.vl_row;
1150 }
1151
1152 int lcd_get_screen_rows(void)
1153 {
1154         return CONSOLE_ROWS;
1155 }
1156
1157 int lcd_get_screen_columns(void)
1158 {
1159         return CONSOLE_COLS;
1160 }
1161
1162 /************************************************************************/
1163 /************************************************************************/