common/lcd.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Common LCD routines
   4  *
   5  * (C) Copyright 2001-2002
   6  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   7  */
   8
   9 /* #define DEBUG */
  10 #include <config.h>
  11 #include <common.h>
  12 #include <command.h>
  13 #include <env_callback.h>
  14 #include <linux/types.h>
  15 #include <stdio_dev.h>
  16 #include <lcd.h>
  17 #include <mapmem.h>
  18 #include <watchdog.h>
  19 #include <asm/unaligned.h>
  20 #include <splash.h>
  21 #include <asm/io.h>
  22 #include <asm/unaligned.h>
  23 #include <video_font.h>
  24
  25 #ifdef CONFIG_LCD_LOGO
  26 #include <bmp_logo.h>
  27 #include <bmp_logo_data.h>
  28 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  29 #error Default Color Map overlaps with Logo Color Map
  30 #endif
  31 #endif
  32
  33 #ifndef CONFIG_LCD_ALIGNMENT
  34 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  35 #endif
  36
  37 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  38         (LCD_BPP != LCD_COLOR32)
  39 #error Unsupported LCD BPP.
  40 #endif
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 static int lcd_init(void *lcdbase);
  45 static void lcd_logo(void);
  46 static void lcd_setfgcolor(int color);
  47 static void lcd_setbgcolor(int color);
  48
  49 static int lcd_color_fg;
  50 static int lcd_color_bg;
  51 int lcd_line_length;
  52 char lcd_is_enabled = 0;
  53 static void *lcd_base;                  /* Start of framebuffer memory  */
  54 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  55
  56 /* Flush LCD activity to the caches */
  57 void lcd_sync(void)
  58 {
  59         /*
  60          * flush_dcache_range() is declared in common.h but it seems that some
  61          * architectures do not actually implement it. Is there a way to find
  62          * out whether it exists? For now, ARM is safe.
  63          */
  64 #if defined(CONFIG_ARM) && !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
  65         int line_length;
  66
  67         if (lcd_flush_dcache)
  68                 flush_dcache_range((ulong)lcd_base,
  69                         (ulong)(lcd_base + lcd_get_size(&line_length)));
  70 #endif
  71 }
  72
  73 void lcd_set_flush_dcache(int flush)
  74 {
  75         lcd_flush_dcache = (flush != 0);
  76 }
  77
  78 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  79 {
  80         lcd_putc(c);
  81 }
  82
  83 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  84 {
  85         lcd_puts(s);
  86 }
  87
  88 /* Small utility to check that you got the colours right */
  89 #ifdef LCD_TEST_PATTERN
  90
  91 #if LCD_BPP == LCD_COLOR8
  92 #define N_BLK_VERT      2
  93 #define N_BLK_HOR       3
  94
  95 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
  96         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
  97         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
  98 }; /*LCD_BPP == LCD_COLOR8 */
  99
 100 #elif LCD_BPP == LCD_COLOR16
 101 #define N_BLK_VERT      2
 102 #define N_BLK_HOR       4
 103
 104 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 105         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,   CONSOLE_COLOR_BLUE,
 106         CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,     CONSOLE_COLOR_GREY,     CONSOLE_COLOR_WHITE,
 107 };
 108 #endif /*LCD_BPP == LCD_COLOR16 */
 109
 110 static void test_pattern(void)
 111 {
 112         ushort v_max  = panel_info.vl_row;
 113         ushort h_max  = panel_info.vl_col;
 114         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 115         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 116         ushort v, h;
 117 #if LCD_BPP == LCD_COLOR8
 118         uchar *pix = (uchar *)lcd_base;
 119 #elif LCD_BPP == LCD_COLOR16
 120         ushort *pix = (ushort *)lcd_base;
 121 #endif
 122
 123         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 124                 h_max, v_max, h_step, v_step);
 125
 126         for (v = 0; v < v_max; ++v) {
 127                 uchar iy = v / v_step;
 128                 for (h = 0; h < h_max; ++h) {
 129                         uchar ix = N_BLK_HOR * iy + h / h_step;
 130                         *pix++ = test_colors[ix];
 131                 }
 132         }
 133 }
 134 #endif /* LCD_TEST_PATTERN */
 135
 136 /*
 137  * With most lcd drivers the line length is set up
 138  * by calculating it from panel_info parameters. Some
 139  * drivers need to calculate the line length differently,
 140  * so make the function weak to allow overriding it.
 141  */
 142 __weak int lcd_get_size(int *line_length)
 143 {
 144         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 145         return *line_length * panel_info.vl_row;
 146 }
 147
 148 int drv_lcd_init(void)
 149 {
 150         struct stdio_dev lcddev;
 151         int rc;
 152
 153         lcd_base = map_sysmem(gd->fb_base, 0);
 154
 155         lcd_init(lcd_base);
 156
 157         /* Device initialization */
 158         memset(&lcddev, 0, sizeof(lcddev));
 159
 160         strcpy(lcddev.name, "lcd");
 161         lcddev.ext   = 0;                       /* No extensions */
 162         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 163         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 164         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 165
 166         rc = stdio_register(&lcddev);
 167
 168         return (rc == 0) ? 1 : rc;
 169 }
 170
 171 void lcd_clear(void)
 172 {
 173         int bg_color;
 174         __maybe_unused ulong addr;
 175         static int do_splash = 1;
 176 #if LCD_BPP == LCD_COLOR8
 177         /* Setting the palette */
 178         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 179         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 180         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 181         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 182         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 183         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 184         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 185         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 186         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 187 #endif
 188
 189 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 190         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 191         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 192         bg_color = CONSOLE_COLOR_WHITE;
 193 #else
 194         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 195         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 196         bg_color = CONSOLE_COLOR_BLACK;
 197 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 198
 199 #ifdef  LCD_TEST_PATTERN
 200         test_pattern();
 201 #else
 202         /* set framebuffer to background color */
 203 #if (LCD_BPP != LCD_COLOR32)
 204         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 205 #else
 206         u32 *ppix = lcd_base;
 207         u32 i;
 208         for (i = 0;
 209            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 210            i++) {
 211                 *ppix++ = bg_color;
 212         }
 213 #endif
 214 #endif
 215         /* setup text-console */
 216         debug("[LCD] setting up console...\n");
 217         lcd_init_console(lcd_base,
 218                          panel_info.vl_col,
 219                          panel_info.vl_row,
 220                          panel_info.vl_rot);
 221         /* Paint the logo and retrieve LCD base address */
 222         debug("[LCD] Drawing the logo...\n");
 223         if (do_splash) {
 224                 if (splash_display() == 0) {
 225                         do_splash = 0;
 226                         lcd_sync();
 227                         return;
 228                 }
 229         }
 230
 231         lcd_logo();
 232 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 233         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 234         lcd_init_console((void *)addr, panel_info.vl_col,
 235                          panel_info.vl_row, panel_info.vl_rot);
 236 #endif
 237         lcd_sync();
 238 }
 239
 240 static int lcd_init(void *lcdbase)
 241 {
 242         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 243         lcd_ctrl_init(lcdbase);
 244
 245         /*
 246          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 247          * the 'lcdbase' argument and uses custom lcd base address
 248          * by setting up gd->fb_base. Check for this condition and fixup
 249          * 'lcd_base' address.
 250          */
 251         if (map_to_sysmem(lcdbase) != gd->fb_base)
 252                 lcd_base = map_sysmem(gd->fb_base, 0);
 253
 254         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 255
 256         lcd_get_size(&lcd_line_length);
 257         lcd_is_enabled = 1;
 258         lcd_clear();
 259         lcd_enable();
 260
 261         /* Initialize the console */
 262         lcd_set_col(0);
 263 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 264         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 265 #else
 266         lcd_set_row(1); /* leave 1 blank line below logo */
 267 #endif
 268
 269         return 0;
 270 }
 271
 272 /*
 273  * This is called early in the system initialization to grab memory
 274  * for the LCD controller.
 275  * Returns new address for monitor, after reserving LCD buffer memory
 276  *
 277  * Note that this is running from ROM, so no write access to global data.
 278  */
 279 ulong lcd_setmem(ulong addr)
 280 {
 281         ulong size;
 282         int line_length;
 283
 284         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 285                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 286
 287         size = lcd_get_size(&line_length);
 288
 289         /* Round up to nearest full page, or MMU section if defined */
 290         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 291         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 292
 293         /* Allocate pages for the frame buffer. */
 294         addr -= size;
 295
 296         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 297               size >> 10, addr);
 298
 299         return addr;
 300 }
 301
 302 static void lcd_setfgcolor(int color)
 303 {
 304         lcd_color_fg = color;
 305 }
 306
 307 int lcd_getfgcolor(void)
 308 {
 309         return lcd_color_fg;
 310 }
 311
 312 static void lcd_setbgcolor(int color)
 313 {
 314         lcd_color_bg = color;
 315 }
 316
 317 int lcd_getbgcolor(void)
 318 {
 319         return lcd_color_bg;
 320 }
 321
 322 #ifdef CONFIG_LCD_LOGO
 323 __weak void lcd_logo_set_cmap(void)
 324 {
 325         int i;
 326         ushort *cmap = configuration_get_cmap();
 327
 328         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 329                 *cmap++ = bmp_logo_palette[i];
 330 }
 331
 332 void lcd_logo_plot(int x, int y)
 333 {
 334         ushort i, j;
 335         uchar *bmap = &bmp_logo_bitmap[0];
 336         unsigned bpix = NBITS(panel_info.vl_bpix);
 337         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 338         ushort *fb16;
 339
 340         debug("Logo: width %d  height %d  colors %d\n",
 341               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 342
 343         if (bpix < 12) {
 344                 WATCHDOG_RESET();
 345                 lcd_logo_set_cmap();
 346                 WATCHDOG_RESET();
 347
 348                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 349                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 350                         bmap += BMP_LOGO_WIDTH;
 351                         fb += panel_info.vl_col;
 352                 }
 353         }
 354         else { /* true color mode */
 355                 u16 col16;
 356                 fb16 = (ushort *)fb;
 357                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 358                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 359                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 360                                 fb16[j] =
 361                                         ((col16 & 0x000F) << 1) |
 362                                         ((col16 & 0x00F0) << 3) |
 363                                         ((col16 & 0x0F00) << 4);
 364                                 }
 365                         bmap += BMP_LOGO_WIDTH;
 366                         fb16 += panel_info.vl_col;
 367                 }
 368         }
 369
 370         WATCHDOG_RESET();
 371         lcd_sync();
 372 }
 373 #else
 374 static inline void lcd_logo_plot(int x, int y) {}
 375 #endif /* CONFIG_LCD_LOGO */
 376
 377 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 378 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 379
 380 static void splash_align_axis(int *axis, unsigned long panel_size,
 381                                         unsigned long picture_size)
 382 {
 383         unsigned long panel_picture_delta = panel_size - picture_size;
 384         unsigned long axis_alignment;
 385
 386         if (*axis == BMP_ALIGN_CENTER)
 387                 axis_alignment = panel_picture_delta / 2;
 388         else if (*axis < 0)
 389                 axis_alignment = panel_picture_delta + *axis + 1;
 390         else
 391                 return;
 392
 393         *axis = max(0, (int)axis_alignment);
 394 }
 395 #endif
 396
 397 #ifdef CONFIG_LCD_BMP_RLE8
 398 #define BMP_RLE8_ESCAPE         0
 399 #define BMP_RLE8_EOL            0
 400 #define BMP_RLE8_EOBMP          1
 401 #define BMP_RLE8_DELTA          2
 402
 403 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 404                                   int cnt)
 405 {
 406         while (cnt > 0) {
 407                 *(*fbp)++ = cmap[*bmap++];
 408                 cnt--;
 409         }
 410 }
 411
 412 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 413 {
 414         ushort *fb = *fbp;
 415         int cnt_8copy = cnt >> 3;
 416
 417         cnt -= cnt_8copy << 3;
 418         while (cnt_8copy > 0) {
 419                 *fb++ = c;
 420                 *fb++ = c;
 421                 *fb++ = c;
 422                 *fb++ = c;
 423                 *fb++ = c;
 424                 *fb++ = c;
 425                 *fb++ = c;
 426                 *fb++ = c;
 427                 cnt_8copy--;
 428         }
 429         while (cnt > 0) {
 430                 *fb++ = c;
 431                 cnt--;
 432         }
 433         *fbp = fb;
 434 }
 435
 436 /*
 437  * Do not call this function directly, must be called from lcd_display_bitmap.
 438  */
 439 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 440                                     uchar *fb, int x_off, int y_off)
 441 {
 442         uchar *bmap;
 443         ulong width, height;
 444         ulong cnt, runlen;
 445         int x, y;
 446         int decode = 1;
 447
 448         width = get_unaligned_le32(&bmp->header.width);
 449         height = get_unaligned_le32(&bmp->header.height);
 450         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 451
 452         x = 0;
 453         y = height - 1;
 454
 455         while (decode) {
 456                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 457                         switch (bmap[1]) {
 458                         case BMP_RLE8_EOL:
 459                                 /* end of line */
 460                                 bmap += 2;
 461                                 x = 0;
 462                                 y--;
 463                                 /* 16bpix, 2-byte per pixel, width should *2 */
 464                                 fb -= (width * 2 + lcd_line_length);
 465                                 break;
 466                         case BMP_RLE8_EOBMP:
 467                                 /* end of bitmap */
 468                                 decode = 0;
 469                                 break;
 470                         case BMP_RLE8_DELTA:
 471                                 /* delta run */
 472                                 x += bmap[2];
 473                                 y -= bmap[3];
 474                                 /* 16bpix, 2-byte per pixel, x should *2 */
 475                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 476                                         * lcd_line_length + (x + x_off) * 2);
 477                                 bmap += 4;
 478                                 break;
 479                         default:
 480                                 /* unencoded run */
 481                                 runlen = bmap[1];
 482                                 bmap += 2;
 483                                 if (y < height) {
 484                                         if (x < width) {
 485                                                 if (x + runlen > width)
 486                                                         cnt = width - x;
 487                                                 else
 488                                                         cnt = runlen;
 489                                                 draw_unencoded_bitmap(
 490                                                         (ushort **)&fb,
 491                                                         bmap, cmap, cnt);
 492                                         }
 493                                         x += runlen;
 494                                 }
 495                                 bmap += runlen;
 496                                 if (runlen & 1)
 497                                         bmap++;
 498                         }
 499                 } else {
 500                         /* encoded run */
 501                         if (y < height) {
 502                                 runlen = bmap[0];
 503                                 if (x < width) {
 504                                         /* aggregate the same code */
 505                                         while (bmap[0] == 0xff &&
 506                                                bmap[2] != BMP_RLE8_ESCAPE &&
 507                                                bmap[1] == bmap[3]) {
 508                                                 runlen += bmap[2];
 509                                                 bmap += 2;
 510                                         }
 511                                         if (x + runlen > width)
 512                                                 cnt = width - x;
 513                                         else
 514                                                 cnt = runlen;
 515                                         draw_encoded_bitmap((ushort **)&fb,
 516                                                 cmap[bmap[1]], cnt);
 517                                 }
 518                                 x += runlen;
 519                         }
 520                         bmap += 2;
 521                 }
 522         }
 523 }
 524 #endif
 525
 526 __weak void fb_put_byte(uchar **fb, uchar **from)
 527 {
 528         *(*fb)++ = *(*from)++;
 529 }
 530
 531 #if defined(CONFIG_BMP_16BPP)
 532 __weak void fb_put_word(uchar **fb, uchar **from)
 533 {
 534         *(*fb)++ = *(*from)++;
 535         *(*fb)++ = *(*from)++;
 536 }
 537 #endif /* CONFIG_BMP_16BPP */
 538
 539 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 540 {
 541         int i;
 542         struct bmp_color_table_entry cte;
 543         ushort *cmap = configuration_get_cmap();
 544
 545         for (i = 0; i < colors; ++i) {
 546                 cte = bmp->color_table[i];
 547                 *cmap = (((cte.red)   << 8) & 0xf800) |
 548                         (((cte.green) << 3) & 0x07e0) |
 549                         (((cte.blue)  >> 3) & 0x001f);
 550                 cmap++;
 551         }
 552 }
 553
 554 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 555 {
 556         ushort *cmap_base = NULL;
 557         ushort i, j;
 558         uchar *fb;
 559         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 560         uchar *bmap;
 561         ushort padded_width;
 562         unsigned long width, height, byte_width;
 563         unsigned long pwidth = panel_info.vl_col;
 564         unsigned colors, bpix, bmp_bpix;
 565         int hdr_size;
 566         struct bmp_color_table_entry *palette;
 567
 568         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 569                 bmp->header.signature[1] == 'M')) {
 570                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 571
 572                 return 1;
 573         }
 574
 575         palette = bmp->color_table;
 576         width = get_unaligned_le32(&bmp->header.width);
 577         height = get_unaligned_le32(&bmp->header.height);
 578         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 579         hdr_size = get_unaligned_le16(&bmp->header.size);
 580         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 581
 582         colors = 1 << bmp_bpix;
 583
 584         bpix = NBITS(panel_info.vl_bpix);
 585
 586         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 587                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 588                         bpix, bmp_bpix);
 589
 590                 return 1;
 591         }
 592
 593         /*
 594          * We support displaying 8bpp BMPs on 16bpp LCDs
 595          * and displaying 24bpp BMPs on 32bpp LCDs
 596          * */
 597         if (bpix != bmp_bpix &&
 598             !(bmp_bpix == 8 && bpix == 16) &&
 599             !(bmp_bpix == 24 && bpix == 32)) {
 600                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 601                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 602                 return 1;
 603         }
 604
 605         debug("Display-bmp: %d x %d  with %d colors, display %d\n",
 606               (int)width, (int)height, (int)colors, 1 << bpix);
 607
 608         if (bmp_bpix == 8)
 609                 lcd_set_cmap(bmp, colors);
 610
 611         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 612
 613 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 614         splash_align_axis(&x, pwidth, width);
 615         splash_align_axis(&y, panel_info.vl_row, height);
 616 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 617
 618         if ((x + width) > pwidth)
 619                 width = pwidth - x;
 620         if ((y + height) > panel_info.vl_row)
 621                 height = panel_info.vl_row - y;
 622
 623         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 624         fb   = (uchar *)(lcd_base +
 625                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 626
 627         switch (bmp_bpix) {
 628         case 1:
 629         case 8: {
 630                 cmap_base = configuration_get_cmap();
 631 #ifdef CONFIG_LCD_BMP_RLE8
 632                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 633                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 634                 if (compression == BMP_BI_RLE8) {
 635                         if (bpix != 16) {
 636                                 /* TODO implement render code for bpix != 16 */
 637                                 printf("Error: only support 16 bpix");
 638                                 return 1;
 639                         }
 640                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 641                         break;
 642                 }
 643 #endif
 644
 645                 if (bpix != 16)
 646                         byte_width = width;
 647                 else
 648                         byte_width = width * 2;
 649
 650                 for (i = 0; i < height; ++i) {
 651                         WATCHDOG_RESET();
 652                         for (j = 0; j < width; j++) {
 653                                 if (bpix != 16) {
 654                                         fb_put_byte(&fb, &bmap);
 655                                 } else {
 656                                         struct bmp_color_table_entry *entry;
 657                                         uint val;
 658
 659                                         if (cmap_base) {
 660                                                 val = cmap_base[*bmap];
 661                                         } else {
 662                                                 entry = &palette[*bmap];
 663                                                 val = entry->blue >> 3 |
 664                                                         entry->green >> 2 << 5 |
 665                                                         entry->red >> 3 << 11;
 666                                         }
 667                                         *(uint16_t *)fb = val;
 668                                         bmap++;
 669                                         fb += sizeof(uint16_t) / sizeof(*fb);
 670                                 }
 671                         }
 672                         bmap += (padded_width - width);
 673                         fb -= byte_width + lcd_line_length;
 674                 }
 675                 break;
 676         }
 677 #if defined(CONFIG_BMP_16BPP)
 678         case 16:
 679                 for (i = 0; i < height; ++i) {
 680                         WATCHDOG_RESET();
 681                         for (j = 0; j < width; j++)
 682                                 fb_put_word(&fb, &bmap);
 683
 684                         bmap += (padded_width - width) * 2;
 685                         fb -= width * 2 + lcd_line_length;
 686                 }
 687                 break;
 688 #endif /* CONFIG_BMP_16BPP */
 689 #if defined(CONFIG_BMP_24BPP)
 690         case 24:
 691                 for (i = 0; i < height; ++i) {
 692                         for (j = 0; j < width; j++) {
 693                                 *(fb++) = *(bmap++);
 694                                 *(fb++) = *(bmap++);
 695                                 *(fb++) = *(bmap++);
 696                                 *(fb++) = 0;
 697                         }
 698                         fb -= lcd_line_length + width * (bpix / 8);
 699                 }
 700                 break;
 701 #endif /* CONFIG_BMP_24BPP */
 702 #if defined(CONFIG_BMP_32BPP)
 703         case 32:
 704                 for (i = 0; i < height; ++i) {
 705                         for (j = 0; j < width; j++) {
 706                                 *(fb++) = *(bmap++);
 707                                 *(fb++) = *(bmap++);
 708                                 *(fb++) = *(bmap++);
 709                                 *(fb++) = *(bmap++);
 710                         }
 711                         fb -= lcd_line_length + width * (bpix / 8);
 712                 }
 713                 break;
 714 #endif /* CONFIG_BMP_32BPP */
 715         default:
 716                 break;
 717         };
 718
 719         lcd_sync();
 720         return 0;
 721 }
 722 #endif
 723
 724 static void lcd_logo(void)
 725 {
 726         lcd_logo_plot(0, 0);
 727
 728 #ifdef CONFIG_LCD_INFO
 729         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 730         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 731         lcd_show_board_info();
 732 #endif /* CONFIG_LCD_INFO */
 733 }
 734
 735 #ifdef CONFIG_SPLASHIMAGE_GUARD
 736 static int on_splashimage(const char *name, const char *value, enum env_op op,
 737         int flags)
 738 {
 739         ulong addr;
 740         int aligned;
 741
 742         if (op == env_op_delete)
 743                 return 0;
 744
 745         addr = simple_strtoul(value, NULL, 16);
 746         /* See README.displaying-bmps */
 747         aligned = (addr % 4 == 2);
 748         if (!aligned) {
 749                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 750                 return -1;
 751         }
 752
 753         return 0;
 754 }
 755
 756 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 757 #endif
 758
 759 int lcd_get_pixel_width(void)
 760 {
 761         return panel_info.vl_col;
 762 }
 763
 764 int lcd_get_pixel_height(void)
 765 {
 766         return panel_info.vl_row;
 767 }