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  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 /************************************************************************/
  11 /* ** HEADER FILES                                                      */
  12 /************************************************************************/
  13
  14 /* #define DEBUG */
  15
  16 #include <config.h>
  17 #include <common.h>
  18 #include <command.h>
  19 #include <stdarg.h>
  20 #include <search.h>
  21 #include <env_callback.h>
  22 #include <linux/types.h>
  23 #include <stdio_dev.h>
  24 #if defined(CONFIG_POST)
  25 #include <post.h>
  26 #endif
  27 #include <lcd.h>
  28 #include <watchdog.h>
  29 #include <asm/unaligned.h>
  30 #include <splash.h>
  31 #include <asm/io.h>
  32 #include <asm/unaligned.h>
  33 #include <fdt_support.h>
  34
  35 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  36         defined(CONFIG_CPU_MONAHANS)
  37 #include <asm/byteorder.h>
  38 #endif
  39
  40 #if defined(CONFIG_MPC823)
  41 #include <lcdvideo.h>
  42 #endif
  43
  44 #if defined(CONFIG_ATMEL_LCD)
  45 #include <atmel_lcdc.h>
  46 #endif
  47
  48 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  49 #include <libfdt.h>
  50 #endif
  51
  52 /************************************************************************/
  53 /* ** FONT DATA                                                         */
  54 /************************************************************************/
  55 #include <video_font.h>         /* Get font data, width and height      */
  56
  57 /************************************************************************/
  58 /* ** LOGO DATA                                                         */
  59 /************************************************************************/
  60 #ifdef CONFIG_LCD_LOGO
  61 # include <bmp_logo.h>          /* Get logo data, width and height      */
  62 # include <bmp_logo_data.h>
  63 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP < LCD_COLOR16)
  64 #  error Default Color Map overlaps with Logo Color Map
  65 # endif
  66 #endif
  67
  68 #ifdef CONFIG_SANDBOX
  69 #include <asm/sdl.h>
  70 #endif
  71
  72 #ifndef CONFIG_LCD_ALIGNMENT
  73 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  74 #endif
  75
  76 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  77         (LCD_BPP != LCD_COLOR32)
  78 # error Unsupported LCD BPP.
  79 #endif
  80
  81 DECLARE_GLOBAL_DATA_PTR;
  82
  83 static int lcd_init(void *lcdbase);
  84
  85 static void *lcd_logo(void);
  86
  87 static void lcd_setfgcolor(int color);
  88 static void lcd_setbgcolor(int color);
  89
  90 static int lcd_color_fg;
  91 static int lcd_color_bg;
  92 int lcd_line_length;
  93
  94 char lcd_is_enabled = 0;
  95
  96 static void *lcd_base;                  /* Start of framebuffer memory  */
  97
  98 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  99
 100 /************************************************************************/
 101
 102 /* Flush LCD activity to the caches */
 103 void lcd_sync(void)
 104 {
 105         /*
 106          * flush_dcache_range() is declared in common.h but it seems that some
 107          * architectures do not actually implement it. Is there a way to find
 108          * out whether it exists? For now, ARM is safe.
 109          */
 110 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 111         int line_length;
 112
 113         if (lcd_flush_dcache)
 114                 flush_dcache_range((u32)lcd_base,
 115                         (u32)(lcd_base + lcd_get_size(&line_length)));
 116 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 117         static ulong last_sync;
 118
 119         if (get_timer(last_sync) > 10) {
 120                 sandbox_sdl_sync(lcd_base);
 121                 last_sync = get_timer(0);
 122         }
 123 #endif
 124 }
 125
 126 void lcd_set_flush_dcache(int flush)
 127 {
 128         lcd_flush_dcache = (flush != 0);
 129 }
 130
 131 /*----------------------------------------------------------------------*/
 132
 133 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 134 {
 135         lcd_putc(c);
 136 }
 137
 138 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 139 {
 140         lcd_puts(s);
 141 }
 142
 143 /************************************************************************/
 144 /**  Small utility to check that you got the colours right              */
 145 /************************************************************************/
 146 #ifdef LCD_TEST_PATTERN
 147
 148 #define N_BLK_VERT      2
 149 #define N_BLK_HOR       3
 150
 151 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 152         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 153         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 154 };
 155
 156 #if LCD_BPP == LCD_COLOR8
 157 typedef uchar pix_t;
 158 #elif LCD_BPP == LCD_COLOR16
 159 typedef ushort pix_t;
 160 #elif LCD_BPP == LCD_COLOR32
 161 typedef ulong pix_t;
 162 #else
 163 #error Unsupported pixelformat
 164 #endif
 165
 166 static void test_pattern(void)
 167 {
 168         ushort v_max  = panel_info.vl_row;
 169         ushort h_max  = panel_info.vl_col;
 170         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 171         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 172         ushort v, h;
 173         pix_t *pix = lcd_base;
 174
 175         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 176                 h_max, v_max, h_step, v_step);
 177
 178         /* WARNING: Code silently assumes 8bit/pixel */
 179         for (v = 0; v < v_max; ++v) {
 180                 uchar iy = v / v_step;
 181                 for (h = 0; h < h_max; ++h) {
 182                         uchar ix = N_BLK_HOR * iy + h / h_step;
 183                         *pix++ = test_colors[ix];
 184                 }
 185         }
 186 }
 187 #endif /* LCD_TEST_PATTERN */
 188
 189
 190 /************************************************************************/
 191 /* ** GENERIC Initialization Routines                                   */
 192 /************************************************************************/
 193 /*
 194  * With most lcd drivers the line length is set up
 195  * by calculating it from panel_info parameters. Some
 196  * drivers need to calculate the line length differently,
 197  * so make the function weak to allow overriding it.
 198  */
 199 __weak int lcd_get_size(int *line_length)
 200 {
 201         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 202         return *line_length * panel_info.vl_row;
 203 }
 204
 205 int drv_lcd_init(void)
 206 {
 207         struct stdio_dev lcddev;
 208         int rc;
 209
 210         lcd_base = map_sysmem(gd->fb_base, 0);
 211
 212         lcd_init(lcd_base);             /* LCD initialization */
 213
 214         /* Device initialization */
 215         memset(&lcddev, 0, sizeof(lcddev));
 216
 217         strcpy(lcddev.name, "lcd");
 218         lcddev.ext   = 0;                       /* No extensions */
 219         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 220         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 221         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 222
 223         rc = stdio_register(&lcddev);
 224
 225         return (rc == 0) ? 1 : rc;
 226 }
 227
 228 /*----------------------------------------------------------------------*/
 229 void lcd_clear(void)
 230 {
 231         short console_rows, console_cols;
 232         int bg_color;
 233 #if LCD_BPP == LCD_COLOR8
 234         /* Setting the palette */
 235         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 236         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 237         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 238         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 239         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 240         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 241         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 242         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 243         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 244 #endif
 245
 246 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 247         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 248         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 249         bg_color = CONSOLE_COLOR_WHITE;
 250 #else
 251         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 252         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 253         bg_color = CONSOLE_COLOR_BLACK;
 254 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 255
 256 #ifdef  LCD_TEST_PATTERN
 257         test_pattern();
 258 #else
 259         /* set framebuffer to background color */
 260 #if (LCD_BPP != LCD_COLOR32)
 261         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 262 #else
 263         u32 *ppix = lcd_base;
 264         u32 i;
 265         for (i = 0;
 266            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 267            i++) {
 268                 *ppix++ = bg_color;
 269         }
 270 #endif
 271 #endif
 272         /* Paint the logo and retrieve LCD base address */
 273         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 274 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 275         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 276         console_rows /= VIDEO_FONT_HEIGHT;
 277 #else
 278         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 279 #endif
 280         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 281         lcd_init_console(lcd_base, console_rows, console_cols);
 282         lcd_init_console(lcd_logo(), console_rows, console_cols);
 283         lcd_sync();
 284 }
 285
 286 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 287                         char *const argv[])
 288 {
 289         lcd_clear();
 290         return 0;
 291 }
 292
 293 U_BOOT_CMD(
 294         cls,    1,      1,      do_lcd_clear,
 295         "clear screen",
 296         ""
 297 );
 298
 299 /*----------------------------------------------------------------------*/
 300
 301 static int lcd_init(void *lcdbase)
 302 {
 303         /* Initialize the lcd controller */
 304         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 305                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 306                 lcdbase);
 307
 308         lcd_ctrl_init(lcdbase);
 309
 310         /*
 311          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 312          * the 'lcdbase' argument and uses custom lcd base address
 313          * by setting up gd->fb_base. Check for this condition and fixup
 314          * 'lcd_base' address.
 315          */
 316         if (map_to_sysmem(lcdbase) != gd->fb_base)
 317                 lcd_base = map_sysmem(gd->fb_base, 0);
 318
 319         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 320
 321         lcd_get_size(&lcd_line_length);
 322         lcd_is_enabled = 1;
 323         lcd_clear();
 324         lcd_enable();
 325
 326         /* Initialize the console */
 327         lcd_set_col(0);
 328 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 329         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 330 #else
 331         lcd_set_row(1); /* leave 1 blank line below logo */
 332 #endif
 333
 334         return 0;
 335 }
 336
 337
 338 /************************************************************************/
 339 /* ** ROM capable initialization part - needed to reserve FB memory     */
 340 /************************************************************************/
 341 /*
 342  * This is called early in the system initialization to grab memory
 343  * for the LCD controller.
 344  * Returns new address for monitor, after reserving LCD buffer memory
 345  *
 346  * Note that this is running from ROM, so no write access to global data.
 347  */
 348 ulong lcd_setmem(ulong addr)
 349 {
 350         ulong size;
 351         int line_length;
 352
 353         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 354                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 355
 356         size = lcd_get_size(&line_length);
 357
 358         /* Round up to nearest full page, or MMU section if defined */
 359         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 360         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 361
 362         /* Allocate pages for the frame buffer. */
 363         addr -= size;
 364
 365         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 366               size >> 10, addr);
 367
 368         return addr;
 369 }
 370
 371 /*----------------------------------------------------------------------*/
 372
 373 static void lcd_setfgcolor(int color)
 374 {
 375         lcd_color_fg = color;
 376 }
 377
 378 int lcd_getfgcolor(void)
 379 {
 380         return lcd_color_fg;
 381 }
 382
 383 /*----------------------------------------------------------------------*/
 384
 385 static void lcd_setbgcolor(int color)
 386 {
 387         lcd_color_bg = color;
 388 }
 389
 390 int lcd_getbgcolor(void)
 391 {
 392         return lcd_color_bg;
 393 }
 394
 395 /************************************************************************/
 396 /* ** Chipset depending Bitmap / Logo stuff...                          */
 397 /************************************************************************/
 398
 399 #ifdef CONFIG_LCD_LOGO
 400 __weak void lcd_logo_set_cmap(void)
 401 {
 402 }
 403
 404 void bitmap_plot(int x, int y)
 405 {
 406         ushort *cmap = (ushort *)bmp_logo_palette;
 407         ushort i, j;
 408         uchar *bmap;
 409         uchar *fb;
 410         ushort *fb16;
 411 #if defined(CONFIG_MPC823)
 412         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 413         cpm8xx_t *cp = &(immr->im_cpm);
 414 #endif
 415         unsigned bpix = NBITS(panel_info.vl_bpix);
 416
 417         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 418                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 419                 ARRAY_SIZE(bmp_logo_palette));
 420
 421         bmap = &bmp_logo_bitmap[0];
 422         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 423
 424         if (bpix < 12) {
 425                 /* Leave room for default color map
 426                  * default case: generic system with no cmap (most likely 16bpp)
 427                  * cmap was set to the source palette, so no change is done.
 428                  * This avoids even more ifdefs in the next stanza
 429                  */
 430 #if defined(CONFIG_MPC823)
 431                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 432 #else
 433                 cmap = configuration_get_cmap();
 434 #endif
 435
 436                 WATCHDOG_RESET();
 437
 438                 /* Set color map */
 439 #ifdef CONFIG_ATMEL_LCD
 440                 lcd_logo_set_cmap();
 441 #else
 442                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 443                         ushort colreg = bmp_logo_palette[i];
 444                         *cmap++ = colreg;
 445                 }
 446 #endif
 447
 448                 WATCHDOG_RESET();
 449
 450                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 451                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 452                         bmap += BMP_LOGO_WIDTH;
 453                         fb += panel_info.vl_col;
 454                 }
 455         } else if (NBITS(panel_info.vl_bpix) == 16) {
 456                 u16 col16;
 457                 fb16 = (ushort *)fb;
 458                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 459                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 460                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 461                                 fb16[j] =
 462                                         ((col16 & 0x000F) << 1) |
 463                                         ((col16 & 0x00F0) << 3) |
 464                                         ((col16 & 0x0F00) << 4);
 465                                 }
 466                         bmap += BMP_LOGO_WIDTH;
 467                         fb16 += panel_info.vl_col;
 468                 }
 469         } else { /* true color mode */
 470                 u16 col16;
 471                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 472
 473                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 474                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 475                                 col16 = bmp_logo_palette[bmap[j] - 16];
 476                                 fb32[j] =
 477                                         ((col16 & 0x000F) << 4) |
 478                                         ((col16 & 0x00F0) << 8) |
 479                                         ((col16 & 0x0F00) << 12);
 480                                 }
 481                         bmap += BMP_LOGO_WIDTH;
 482                         fb32 += panel_info.vl_col;
 483                 }
 484         }
 485
 486         WATCHDOG_RESET();
 487         lcd_sync();
 488 }
 489 #else
 490 static inline void bitmap_plot(int x, int y) {}
 491 #endif /* CONFIG_LCD_LOGO */
 492
 493 /*----------------------------------------------------------------------*/
 494 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 495 /*
 496  * Display the BMP file located at address bmp_image.
 497  * Only uncompressed.
 498  */
 499
 500 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 501 #define BMP_ALIGN_CENTER        0x7FFF
 502
 503 static void splash_align_axis(int *axis, unsigned long panel_size,
 504                                         unsigned long picture_size)
 505 {
 506         unsigned long panel_picture_delta = panel_size - picture_size;
 507         unsigned long axis_alignment;
 508
 509         if (*axis == BMP_ALIGN_CENTER)
 510                 axis_alignment = panel_picture_delta / 2;
 511         else if (*axis < 0)
 512                 axis_alignment = panel_picture_delta + *axis + 1;
 513         else
 514                 return;
 515
 516         *axis = max(0, (int)axis_alignment);
 517 }
 518 #endif
 519
 520
 521 #ifdef CONFIG_LCD_BMP_RLE8
 522
 523 #define BMP_RLE8_ESCAPE         0
 524 #define BMP_RLE8_EOL            0
 525 #define BMP_RLE8_EOBMP          1
 526 #define BMP_RLE8_DELTA          2
 527
 528 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 529                                   int cnt)
 530 {
 531         while (cnt > 0) {
 532                 *(*fbp)++ = cmap[*bmap++];
 533                 cnt--;
 534         }
 535 }
 536
 537 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 538 {
 539         ushort *fb = *fbp;
 540         int cnt_8copy = cnt >> 3;
 541
 542         cnt -= cnt_8copy << 3;
 543         while (cnt_8copy > 0) {
 544                 *fb++ = c;
 545                 *fb++ = c;
 546                 *fb++ = c;
 547                 *fb++ = c;
 548                 *fb++ = c;
 549                 *fb++ = c;
 550                 *fb++ = c;
 551                 *fb++ = c;
 552                 cnt_8copy--;
 553         }
 554         while (cnt > 0) {
 555                 *fb++ = c;
 556                 cnt--;
 557         }
 558         *fbp = fb;
 559 }
 560
 561 /*
 562  * Do not call this function directly, must be called from lcd_display_bitmap.
 563  */
 564 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 565                                     int x_off, int y_off)
 566 {
 567         uchar *bmap;
 568         ulong width, height;
 569         ulong cnt, runlen;
 570         int x, y;
 571         int decode = 1;
 572
 573         width = get_unaligned_le32(&bmp->header.width);
 574         height = get_unaligned_le32(&bmp->header.height);
 575         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 576
 577         x = 0;
 578         y = height - 1;
 579
 580         while (decode) {
 581                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 582                         switch (bmap[1]) {
 583                         case BMP_RLE8_EOL:
 584                                 /* end of line */
 585                                 bmap += 2;
 586                                 x = 0;
 587                                 y--;
 588                                 /* 16bpix, 2-byte per pixel, width should *2 */
 589                                 fb -= (width * 2 + lcd_line_length);
 590                                 break;
 591                         case BMP_RLE8_EOBMP:
 592                                 /* end of bitmap */
 593                                 decode = 0;
 594                                 break;
 595                         case BMP_RLE8_DELTA:
 596                                 /* delta run */
 597                                 x += bmap[2];
 598                                 y -= bmap[3];
 599                                 /* 16bpix, 2-byte per pixel, x should *2 */
 600                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 601                                         * lcd_line_length + (x + x_off) * 2);
 602                                 bmap += 4;
 603                                 break;
 604                         default:
 605                                 /* unencoded run */
 606                                 runlen = bmap[1];
 607                                 bmap += 2;
 608                                 if (y < height) {
 609                                         if (x < width) {
 610                                                 if (x + runlen > width)
 611                                                         cnt = width - x;
 612                                                 else
 613                                                         cnt = runlen;
 614                                                 draw_unencoded_bitmap(
 615                                                         (ushort **)&fb,
 616                                                         bmap, cmap, cnt);
 617                                         }
 618                                         x += runlen;
 619                                 }
 620                                 bmap += runlen;
 621                                 if (runlen & 1)
 622                                         bmap++;
 623                         }
 624                 } else {
 625                         /* encoded run */
 626                         if (y < height) {
 627                                 runlen = bmap[0];
 628                                 if (x < width) {
 629                                         /* aggregate the same code */
 630                                         while (bmap[0] == 0xff &&
 631                                                bmap[2] != BMP_RLE8_ESCAPE &&
 632                                                bmap[1] == bmap[3]) {
 633                                                 runlen += bmap[2];
 634                                                 bmap += 2;
 635                                         }
 636                                         if (x + runlen > width)
 637                                                 cnt = width - x;
 638                                         else
 639                                                 cnt = runlen;
 640                                         draw_encoded_bitmap((ushort **)&fb,
 641                                                 cmap[bmap[1]], cnt);
 642                                 }
 643                                 x += runlen;
 644                         }
 645                         bmap += 2;
 646                 }
 647         }
 648 }
 649 #endif
 650
 651 __weak void fb_put_byte(uchar **fb, uchar **from)
 652 {
 653         *(*fb)++ = *(*from)++;
 654 }
 655
 656 #if defined(CONFIG_BMP_16BPP)
 657 __weak void fb_put_word(uchar **fb, uchar **from)
 658 {
 659         *(*fb)++ = *(*from)++;
 660         *(*fb)++ = *(*from)++;
 661 }
 662 #endif /* CONFIG_BMP_16BPP */
 663
 664 static inline bmp_color_table_entry_t *get_color_table(bmp_image_t *bmp)
 665 {
 666         bmp_header_t *bh = &bmp->header;
 667         return (void *)bmp + offsetof(bmp_header_t, size) + bh->size;
 668 }
 669
 670 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 671 {
 672         ushort *cmap = NULL;
 673         ushort *cmap_base = NULL;
 674         ushort i, j;
 675         uchar *fb;
 676         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 677         uchar *bmap;
 678         ushort padded_width;
 679         unsigned long width, height;
 680         unsigned long pwidth = panel_info.vl_col;
 681         unsigned long long colors;
 682         unsigned bpix, bmp_bpix;
 683         bmp_color_table_entry_t *cte;
 684
 685         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 686                 bmp->header.signature[1] == 'M')) {
 687                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 688
 689                 return 1;
 690         }
 691
 692         width = get_unaligned_le32(&bmp->header.width);
 693         height = get_unaligned_le32(&bmp->header.height);
 694         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 695
 696         colors = 1 << bmp_bpix;
 697
 698         bpix = NBITS(panel_info.vl_bpix);
 699
 700         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 701                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 702                         bpix, bmp_bpix);
 703
 704                 return 1;
 705         }
 706
 707         /*
 708          * We support displaying 8bpp BMPs on 16bpp LCDs
 709          * and displaying 24bpp BMPs on 32bpp LCDs
 710          * */
 711         if (bpix != bmp_bpix &&
 712             !(bmp_bpix == 8 && bpix == 16) &&
 713             !(bmp_bpix == 24 && bpix == 32)) {
 714                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 715                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 716                 return 1;
 717         }
 718
 719         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 720                 width, height, colors);
 721
 722         cte = get_color_table(bmp);
 723         if (bmp_bpix == 8) {
 724                 cmap = configuration_get_cmap();
 725                 cmap_base = cmap;
 726
 727                 /* Set color map */
 728                 for (i = 0; i < colors; ++i) {
 729 #if !defined(CONFIG_ATMEL_LCD)
 730                         ushort colreg =
 731                                 ( ((cte[i].red)   << 8) & 0xf800) |
 732                                 ( ((cte[i].green) << 3) & 0x07e0) |
 733                                 ( ((cte[i].blue)  >> 3) & 0x001f) ;
 734                         *cmap = colreg;
 735 #if defined(CONFIG_MPC823)
 736                         cmap--;
 737 #else
 738                         cmap++;
 739 #endif
 740 #else /* CONFIG_ATMEL_LCD */
 741                         lcd_setcolreg(i, cte[i].red, cte[i].green, cte[i].blue);
 742 #endif
 743                 }
 744         }
 745
 746         padded_width = ALIGN(width, 4);
 747
 748 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 749         splash_align_axis(&x, pwidth, width);
 750         splash_align_axis(&y, panel_info.vl_row, height);
 751 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 752         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 753
 754         if ((x + width) > pwidth)
 755                 width = pwidth - x;
 756         if ((y + height) > panel_info.vl_row) {
 757                 height = panel_info.vl_row - y;
 758                 bmap += (panel_info.vl_row - y) * padded_width;
 759         }
 760
 761         fb   = (uchar *)(lcd_base +
 762                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 763
 764         switch (bmp_bpix) {
 765         case 1: /* pass through */
 766         case 8: {
 767 #ifdef CONFIG_LCD_BMP_RLE8
 768                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 769                 if (compression == BMP_BI_RLE8) {
 770                         if (bpix != 16) {
 771                                 /* TODO implement render code for bpix != 16 */
 772                                 printf("Error: only support 16 bpix");
 773                                 return 1;
 774                         }
 775                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 776                         break;
 777                 }
 778 #endif
 779
 780                 for (i = 0; i < height; ++i) {
 781                         WATCHDOG_RESET();
 782                         for (j = 0; j < width; j++) {
 783                                 if (bpix == 32) {
 784                                         int i = *bmap++;
 785
 786                                         fb[3] = 0; /* T */
 787                                         fb[0] = cte[i].blue;
 788                                         fb[1] = cte[i].green;
 789                                         fb[2] = cte[i].red;
 790                                         fb += sizeof(uint32_t) / sizeof(*fb);
 791                                 } else if (bpix == 16) {
 792                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 793                                         fb += sizeof(uint16_t) / sizeof(*fb);
 794                                 } else {
 795                                         FB_PUT_BYTE(fb, bmap);
 796                                 }
 797                         }
 798                         if (bpix > 8) {
 799                                 bmap += padded_width - width;
 800                                 fb   -= width * bpix / 8 + lcd_line_length;
 801                         } else {
 802                                 bmap += padded_width;
 803                                 fb -= lcd_line_length;
 804                         }
 805                 }
 806                 break;
 807         }
 808 #if defined(CONFIG_BMP_16BPP)
 809         case 16:
 810                 for (i = 0; i < height; ++i) {
 811                         WATCHDOG_RESET();
 812                         for (j = 0; j < width; j++)
 813                                 fb_put_word(&fb, &bmap);
 814
 815                         bmap += (padded_width - width) * 2;
 816                         fb -= width * 2 + lcd_line_length;
 817                 }
 818                 break;
 819 #endif /* CONFIG_BMP_16BPP */
 820 #if defined(CONFIG_BMP_24BMP)
 821         case 24:
 822                 for (i = 0; i < height; ++i) {
 823                         for (j = 0; j < width; j++) {
 824                                 *(fb++) = *(bmap++);
 825                                 *(fb++) = *(bmap++);
 826                                 *(fb++) = *(bmap++);
 827                                 *(fb++) = 0;
 828                         }
 829                         fb -= lcd_line_length + width * (bpix / 8);
 830                 }
 831                 break;
 832 #endif /* CONFIG_BMP_24BPP */
 833 #if defined(CONFIG_BMP_32BPP)
 834         case 32:
 835                 for (i = 0; i < height; ++i) {
 836                         WATCHDOG_RESET();
 837                         for (j = 0; j < width; j++) {
 838                                 fb[3] = *bmap++; /* T */
 839                                 fb[0] = *bmap++; /* B */
 840                                 fb[1] = *bmap++; /* G */
 841                                 fb[2] = *bmap++; /* R */
 842                                 fb += 4;
 843                         }
 844                         bmap += (padded_width - width) * 4;
 845                         fb -= lcd_line_length + width * (bpix / 8);
 846                 }
 847                 break;
 848 #endif /* CONFIG_BMP_32BPP */
 849         };
 850
 851         return 0;
 852 }
 853 #endif
 854
 855 static void *lcd_logo(void)
 856 {
 857 #ifdef CONFIG_SPLASH_SCREEN
 858         char *s;
 859         ulong addr;
 860         static int do_splash = 1;
 861
 862         if (do_splash && (s = getenv("splashimage")) != NULL) {
 863                 int x = 0, y = 0;
 864                 char *end;
 865
 866                 do_splash = 0;
 867
 868                 if (splash_screen_prepare())
 869                         return (void *)lcd_base;
 870
 871                 addr = simple_strtoul (s, &end, 16);
 872                 if (addr == 0 || *end != '\0')
 873                         return lcd_base;
 874
 875                 splash_get_pos(&x, &y);
 876
 877                 if (bmp_display(addr, x, y) == 0)
 878                         return (void *)lcd_base;
 879         }
 880 #endif /* CONFIG_SPLASH_SCREEN */
 881
 882         bitmap_plot(0, 0);
 883
 884 #ifdef CONFIG_LCD_INFO
 885         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 886         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 887         lcd_show_board_info();
 888 #endif /* CONFIG_LCD_INFO */
 889
 890 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 891         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 892 #else
 893         return lcd_base;
 894 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 895 }
 896
 897 #ifdef CONFIG_SPLASHIMAGE_GUARD
 898 static int on_splashimage(const char *name, const char *value, enum env_op op,
 899         int flags)
 900 {
 901         ulong addr;
 902         int aligned;
 903
 904         if (op == env_op_delete)
 905                 return 0;
 906
 907         addr = simple_strtoul(value, NULL, 16);
 908         /* See README.displaying-bmps */
 909         aligned = (addr % 4 == 2);
 910         if (!aligned) {
 911                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 912                 return -1;
 913         }
 914
 915         return 0;
 916 }
 917
 918 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 919 #endif
 920
 921 int lcd_get_pixel_width(void)
 922 {
 923         return panel_info.vl_col;
 924 }
 925
 926 int lcd_get_pixel_height(void)
 927 {
 928         return panel_info.vl_row;
 929 }
 930
 931 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 932 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 933 {
 934 #if LCD_BPP == LCD_COLOR16
 935         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 936                                        panel_info.vl_col, panel_info.vl_row,
 937                                        panel_info.vl_col * 2, "r5g6b5");
 938 #else
 939         return -1;
 940 #endif
 941 }
 942
 943 int lcd_dt_simplefb_add_node(void *blob)
 944 {
 945         static const char compat[] = "simple-framebuffer";
 946         static const char disabled[] = "disabled";
 947         int off, ret;
 948
 949         off = fdt_add_subnode(blob, 0, "framebuffer");
 950         if (off < 0)
 951                 return -1;
 952
 953         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 954         if (ret < 0)
 955                 return -1;
 956
 957         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
 958         if (ret < 0)
 959                 return -1;
 960
 961         return lcd_dt_simplefb_configure_node(blob, off);
 962 }
 963
 964 int lcd_dt_simplefb_enable_existing_node(void *blob)
 965 {
 966         int off;
 967
 968         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
 969         if (off < 0)
 970                 return -1;
 971
 972         return lcd_dt_simplefb_configure_node(blob, off);
 973 }
 974 #endif