common/lcd.c

   1 /*
   2  * Common LCD routines
   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 /* #define DEBUG */
  11 #include <config.h>
  12 #include <common.h>
  13 #include <command.h>
  14 #include <env_callback.h>
  15 #include <linux/types.h>
  16 #include <stdio_dev.h>
  17 #include <lcd.h>
  18 #include <mapmem.h>
  19 #include <watchdog.h>
  20 #include <asm/unaligned.h>
  21 #include <splash.h>
  22 #include <asm/io.h>
  23 #include <asm/unaligned.h>
  24 #include <video_font.h>
  25
  26 #ifdef CONFIG_LCD_LOGO
  27 #include <bmp_logo.h>
  28 #include <bmp_logo_data.h>
  29 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  30 #error Default Color Map overlaps with Logo Color Map
  31 #endif
  32 #endif
  33
  34 #ifndef CONFIG_LCD_ALIGNMENT
  35 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  36 #endif
  37
  38 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  39         (LCD_BPP != LCD_COLOR32)
  40 #error Unsupported LCD BPP.
  41 #endif
  42
  43 DECLARE_GLOBAL_DATA_PTR;
  44
  45 static int lcd_init(void *lcdbase);
  46 static void lcd_logo(void);
  47 static void lcd_setfgcolor(int color);
  48 static void lcd_setbgcolor(int color);
  49
  50 static int lcd_color_fg;
  51 static int lcd_color_bg;
  52 int lcd_line_length;
  53 char lcd_is_enabled = 0;
  54 static void *lcd_base;                  /* Start of framebuffer memory  */
  55 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  56
  57 /* Flush LCD activity to the caches */
  58 void lcd_sync(void)
  59 {
  60         /*
  61          * flush_dcache_range() is declared in common.h but it seems that some
  62          * architectures do not actually implement it. Is there a way to find
  63          * out whether it exists? For now, ARM is safe.
  64          */
  65 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  66         int line_length;
  67
  68         if (lcd_flush_dcache)
  69                 flush_dcache_range((ulong)lcd_base,
  70                         (ulong)(lcd_base + lcd_get_size(&line_length)));
  71 #endif
  72 }
  73
  74 void lcd_set_flush_dcache(int flush)
  75 {
  76         lcd_flush_dcache = (flush != 0);
  77 }
  78
  79 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  80 {
  81         lcd_putc(c);
  82 }
  83
  84 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  85 {
  86         lcd_puts(s);
  87 }
  88
  89 /* Small utility to check that you got the colours right */
  90 #ifdef LCD_TEST_PATTERN
  91
  92 #if LCD_BPP == LCD_COLOR8
  93 #define N_BLK_VERT      2
  94 #define N_BLK_HOR       3
  95
  96 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
  97         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
  98         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
  99 }; /*LCD_BPP == LCD_COLOR8 */
 100
 101 #elif LCD_BPP == LCD_COLOR16
 102 #define N_BLK_VERT      2
 103 #define N_BLK_HOR       4
 104
 105 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 106         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,   CONSOLE_COLOR_BLUE,
 107         CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,     CONSOLE_COLOR_GREY,     CONSOLE_COLOR_WHITE,
 108 };
 109 #endif /*LCD_BPP == LCD_COLOR16 */
 110
 111 static void test_pattern(void)
 112 {
 113         ushort v_max  = panel_info.vl_row;
 114         ushort h_max  = panel_info.vl_col;
 115         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 116         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 117         ushort v, h;
 118 #if LCD_BPP == LCD_COLOR8
 119         uchar *pix = (uchar *)lcd_base;
 120 #elif LCD_BPP == LCD_COLOR16
 121         ushort *pix = (ushort *)lcd_base;
 122 #endif
 123
 124         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 125                 h_max, v_max, h_step, v_step);
 126
 127         for (v = 0; v < v_max; ++v) {
 128                 uchar iy = v / v_step;
 129                 for (h = 0; h < h_max; ++h) {
 130                         uchar ix = N_BLK_HOR * iy + h / h_step;
 131                         *pix++ = test_colors[ix];
 132                 }
 133         }
 134 }
 135 #endif /* LCD_TEST_PATTERN */
 136
 137 /*
 138  * With most lcd drivers the line length is set up
 139  * by calculating it from panel_info parameters. Some
 140  * drivers need to calculate the line length differently,
 141  * so make the function weak to allow overriding it.
 142  */
 143 __weak int lcd_get_size(int *line_length)
 144 {
 145         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 146         return *line_length * panel_info.vl_row;
 147 }
 148
 149 int drv_lcd_init(void)
 150 {
 151         struct stdio_dev lcddev;
 152         int rc;
 153
 154         lcd_base = map_sysmem(gd->fb_base, 0);
 155
 156         lcd_init(lcd_base);
 157
 158         /* Device initialization */
 159         memset(&lcddev, 0, sizeof(lcddev));
 160
 161         strcpy(lcddev.name, "lcd");
 162         lcddev.ext   = 0;                       /* No extensions */
 163         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 164         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 165         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 166
 167         rc = stdio_register(&lcddev);
 168
 169         return (rc == 0) ? 1 : rc;
 170 }
 171
 172 void lcd_clear(void)
 173 {
 174         int bg_color;
 175         char *s;
 176         ulong addr;
 177         static int do_splash = 1;
 178 #if LCD_BPP == LCD_COLOR8
 179         /* Setting the palette */
 180         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 181         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 182         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 183         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 184         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 185         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 186         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 187         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 188         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 189 #endif
 190
 191 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 192         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 193         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 194         bg_color = CONSOLE_COLOR_WHITE;
 195 #else
 196         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 197         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 198         bg_color = CONSOLE_COLOR_BLACK;
 199 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 200
 201 #ifdef  LCD_TEST_PATTERN
 202         test_pattern();
 203 #else
 204         /* set framebuffer to background color */
 205 #if (LCD_BPP != LCD_COLOR32)
 206         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 207 #else
 208         u32 *ppix = lcd_base;
 209         u32 i;
 210         for (i = 0;
 211            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 212            i++) {
 213                 *ppix++ = bg_color;
 214         }
 215 #endif
 216 #endif
 217         /* setup text-console */
 218         debug("[LCD] setting up console...\n");
 219         lcd_init_console(lcd_base,
 220                          panel_info.vl_col,
 221                          panel_info.vl_row,
 222                          panel_info.vl_rot);
 223         /* Paint the logo and retrieve LCD base address */
 224         debug("[LCD] Drawing the logo...\n");
 225         if (do_splash) {
 226                 s = env_get("splashimage");
 227                 if (s) {
 228                         do_splash = 0;
 229                         addr = simple_strtoul(s, NULL, 16);
 230                         if (lcd_splash(addr) == 0) {
 231                                 lcd_sync();
 232                                 return;
 233                         }
 234                 }
 235         }
 236
 237         lcd_logo();
 238 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 239         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 240         lcd_init_console((void *)addr, panel_info.vl_col,
 241                          panel_info.vl_row, panel_info.vl_rot);
 242 #endif
 243         lcd_sync();
 244 }
 245
 246 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 247                         char *const argv[])
 248 {
 249         lcd_clear();
 250         return 0;
 251 }
 252 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 253
 254 static int lcd_init(void *lcdbase)
 255 {
 256         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 257         lcd_ctrl_init(lcdbase);
 258
 259         /*
 260          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 261          * the 'lcdbase' argument and uses custom lcd base address
 262          * by setting up gd->fb_base. Check for this condition and fixup
 263          * 'lcd_base' address.
 264          */
 265         if (map_to_sysmem(lcdbase) != gd->fb_base)
 266                 lcd_base = map_sysmem(gd->fb_base, 0);
 267
 268         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 269
 270         lcd_get_size(&lcd_line_length);
 271         lcd_is_enabled = 1;
 272         lcd_clear();
 273         lcd_enable();
 274
 275         /* Initialize the console */
 276         lcd_set_col(0);
 277 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 278         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 279 #else
 280         lcd_set_row(1); /* leave 1 blank line below logo */
 281 #endif
 282
 283         return 0;
 284 }
 285
 286 /*
 287  * This is called early in the system initialization to grab memory
 288  * for the LCD controller.
 289  * Returns new address for monitor, after reserving LCD buffer memory
 290  *
 291  * Note that this is running from ROM, so no write access to global data.
 292  */
 293 ulong lcd_setmem(ulong addr)
 294 {
 295         ulong size;
 296         int line_length;
 297
 298         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 299                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 300
 301         size = lcd_get_size(&line_length);
 302
 303         /* Round up to nearest full page, or MMU section if defined */
 304         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 305         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 306
 307         /* Allocate pages for the frame buffer. */
 308         addr -= size;
 309
 310         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 311               size >> 10, addr);
 312
 313         return addr;
 314 }
 315
 316 static void lcd_setfgcolor(int color)
 317 {
 318         lcd_color_fg = color;
 319 }
 320
 321 int lcd_getfgcolor(void)
 322 {
 323         return lcd_color_fg;
 324 }
 325
 326 static void lcd_setbgcolor(int color)
 327 {
 328         lcd_color_bg = color;
 329 }
 330
 331 int lcd_getbgcolor(void)
 332 {
 333         return lcd_color_bg;
 334 }
 335
 336 #ifdef CONFIG_LCD_LOGO
 337 __weak void lcd_logo_set_cmap(void)
 338 {
 339         int i;
 340         ushort *cmap = configuration_get_cmap();
 341
 342         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 343                 *cmap++ = bmp_logo_palette[i];
 344 }
 345
 346 void lcd_logo_plot(int x, int y)
 347 {
 348         ushort i, j;
 349         uchar *bmap = &bmp_logo_bitmap[0];
 350         unsigned bpix = NBITS(panel_info.vl_bpix);
 351         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 352         ushort *fb16;
 353
 354         debug("Logo: width %d  height %d  colors %d\n",
 355               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 356
 357         if (bpix < 12) {
 358                 WATCHDOG_RESET();
 359                 lcd_logo_set_cmap();
 360                 WATCHDOG_RESET();
 361
 362                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 363                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 364                         bmap += BMP_LOGO_WIDTH;
 365                         fb += panel_info.vl_col;
 366                 }
 367         }
 368         else { /* true color mode */
 369                 u16 col16;
 370                 fb16 = (ushort *)fb;
 371                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 372                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 373                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 374                                 fb16[j] =
 375                                         ((col16 & 0x000F) << 1) |
 376                                         ((col16 & 0x00F0) << 3) |
 377                                         ((col16 & 0x0F00) << 4);
 378                                 }
 379                         bmap += BMP_LOGO_WIDTH;
 380                         fb16 += panel_info.vl_col;
 381                 }
 382         }
 383
 384         WATCHDOG_RESET();
 385         lcd_sync();
 386 }
 387 #else
 388 static inline void lcd_logo_plot(int x, int y) {}
 389 #endif /* CONFIG_LCD_LOGO */
 390
 391 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 392 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 393 #define BMP_ALIGN_CENTER        0x7FFF
 394
 395 static void splash_align_axis(int *axis, unsigned long panel_size,
 396                                         unsigned long picture_size)
 397 {
 398         unsigned long panel_picture_delta = panel_size - picture_size;
 399         unsigned long axis_alignment;
 400
 401         if (*axis == BMP_ALIGN_CENTER)
 402                 axis_alignment = panel_picture_delta / 2;
 403         else if (*axis < 0)
 404                 axis_alignment = panel_picture_delta + *axis + 1;
 405         else
 406                 return;
 407
 408         *axis = max(0, (int)axis_alignment);
 409 }
 410 #endif
 411
 412 #ifdef CONFIG_LCD_BMP_RLE8
 413 #define BMP_RLE8_ESCAPE         0
 414 #define BMP_RLE8_EOL            0
 415 #define BMP_RLE8_EOBMP          1
 416 #define BMP_RLE8_DELTA          2
 417
 418 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 419                                   int cnt)
 420 {
 421         while (cnt > 0) {
 422                 *(*fbp)++ = cmap[*bmap++];
 423                 cnt--;
 424         }
 425 }
 426
 427 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 428 {
 429         ushort *fb = *fbp;
 430         int cnt_8copy = cnt >> 3;
 431
 432         cnt -= cnt_8copy << 3;
 433         while (cnt_8copy > 0) {
 434                 *fb++ = c;
 435                 *fb++ = c;
 436                 *fb++ = c;
 437                 *fb++ = c;
 438                 *fb++ = c;
 439                 *fb++ = c;
 440                 *fb++ = c;
 441                 *fb++ = c;
 442                 cnt_8copy--;
 443         }
 444         while (cnt > 0) {
 445                 *fb++ = c;
 446                 cnt--;
 447         }
 448         *fbp = fb;
 449 }
 450
 451 /*
 452  * Do not call this function directly, must be called from lcd_display_bitmap.
 453  */
 454 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 455                                     uchar *fb, int x_off, int y_off)
 456 {
 457         uchar *bmap;
 458         ulong width, height;
 459         ulong cnt, runlen;
 460         int x, y;
 461         int decode = 1;
 462
 463         width = get_unaligned_le32(&bmp->header.width);
 464         height = get_unaligned_le32(&bmp->header.height);
 465         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 466
 467         x = 0;
 468         y = height - 1;
 469
 470         while (decode) {
 471                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 472                         switch (bmap[1]) {
 473                         case BMP_RLE8_EOL:
 474                                 /* end of line */
 475                                 bmap += 2;
 476                                 x = 0;
 477                                 y--;
 478                                 /* 16bpix, 2-byte per pixel, width should *2 */
 479                                 fb -= (width * 2 + lcd_line_length);
 480                                 break;
 481                         case BMP_RLE8_EOBMP:
 482                                 /* end of bitmap */
 483                                 decode = 0;
 484                                 break;
 485                         case BMP_RLE8_DELTA:
 486                                 /* delta run */
 487                                 x += bmap[2];
 488                                 y -= bmap[3];
 489                                 /* 16bpix, 2-byte per pixel, x should *2 */
 490                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 491                                         * lcd_line_length + (x + x_off) * 2);
 492                                 bmap += 4;
 493                                 break;
 494                         default:
 495                                 /* unencoded run */
 496                                 runlen = bmap[1];
 497                                 bmap += 2;
 498                                 if (y < height) {
 499                                         if (x < width) {
 500                                                 if (x + runlen > width)
 501                                                         cnt = width - x;
 502                                                 else
 503                                                         cnt = runlen;
 504                                                 draw_unencoded_bitmap(
 505                                                         (ushort **)&fb,
 506                                                         bmap, cmap, cnt);
 507                                         }
 508                                         x += runlen;
 509                                 }
 510                                 bmap += runlen;
 511                                 if (runlen & 1)
 512                                         bmap++;
 513                         }
 514                 } else {
 515                         /* encoded run */
 516                         if (y < height) {
 517                                 runlen = bmap[0];
 518                                 if (x < width) {
 519                                         /* aggregate the same code */
 520                                         while (bmap[0] == 0xff &&
 521                                                bmap[2] != BMP_RLE8_ESCAPE &&
 522                                                bmap[1] == bmap[3]) {
 523                                                 runlen += bmap[2];
 524                                                 bmap += 2;
 525                                         }
 526                                         if (x + runlen > width)
 527                                                 cnt = width - x;
 528                                         else
 529                                                 cnt = runlen;
 530                                         draw_encoded_bitmap((ushort **)&fb,
 531                                                 cmap[bmap[1]], cnt);
 532                                 }
 533                                 x += runlen;
 534                         }
 535                         bmap += 2;
 536                 }
 537         }
 538 }
 539 #endif
 540
 541 __weak void fb_put_byte(uchar **fb, uchar **from)
 542 {
 543         *(*fb)++ = *(*from)++;
 544 }
 545
 546 #if defined(CONFIG_BMP_16BPP)
 547 __weak void fb_put_word(uchar **fb, uchar **from)
 548 {
 549         *(*fb)++ = *(*from)++;
 550         *(*fb)++ = *(*from)++;
 551 }
 552 #endif /* CONFIG_BMP_16BPP */
 553
 554 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 555 {
 556         int i;
 557         struct bmp_color_table_entry cte;
 558         ushort *cmap = configuration_get_cmap();
 559
 560         for (i = 0; i < colors; ++i) {
 561                 cte = bmp->color_table[i];
 562                 *cmap = (((cte.red)   << 8) & 0xf800) |
 563                         (((cte.green) << 3) & 0x07e0) |
 564                         (((cte.blue)  >> 3) & 0x001f);
 565                 cmap++;
 566         }
 567 }
 568
 569 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 570 {
 571         ushort *cmap_base = NULL;
 572         ushort i, j;
 573         uchar *fb;
 574         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 575         uchar *bmap;
 576         ushort padded_width;
 577         unsigned long width, height, byte_width;
 578         unsigned long pwidth = panel_info.vl_col;
 579         unsigned colors, bpix, bmp_bpix;
 580         int hdr_size;
 581         struct bmp_color_table_entry *palette;
 582
 583         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 584                 bmp->header.signature[1] == 'M')) {
 585                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 586
 587                 return 1;
 588         }
 589
 590         palette = bmp->color_table;
 591         width = get_unaligned_le32(&bmp->header.width);
 592         height = get_unaligned_le32(&bmp->header.height);
 593         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 594         hdr_size = get_unaligned_le16(&bmp->header.size);
 595         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 596
 597         colors = 1 << bmp_bpix;
 598
 599         bpix = NBITS(panel_info.vl_bpix);
 600
 601         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 602                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 603                         bpix, bmp_bpix);
 604
 605                 return 1;
 606         }
 607
 608         /*
 609          * We support displaying 8bpp BMPs on 16bpp LCDs
 610          * and displaying 24bpp BMPs on 32bpp LCDs
 611          * */
 612         if (bpix != bmp_bpix &&
 613             !(bmp_bpix == 8 && bpix == 16) &&
 614             !(bmp_bpix == 24 && bpix == 32)) {
 615                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 616                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 617                 return 1;
 618         }
 619
 620         debug("Display-bmp: %d x %d  with %d colors, display %d\n",
 621               (int)width, (int)height, (int)colors, 1 << bpix);
 622
 623         if (bmp_bpix == 8)
 624                 lcd_set_cmap(bmp, colors);
 625
 626         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 627
 628 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 629         splash_align_axis(&x, pwidth, width);
 630         splash_align_axis(&y, panel_info.vl_row, height);
 631 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 632
 633         if ((x + width) > pwidth)
 634                 width = pwidth - x;
 635         if ((y + height) > panel_info.vl_row)
 636                 height = panel_info.vl_row - y;
 637
 638         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 639         fb   = (uchar *)(lcd_base +
 640                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 641
 642         switch (bmp_bpix) {
 643         case 1:
 644         case 8: {
 645                 cmap_base = configuration_get_cmap();
 646 #ifdef CONFIG_LCD_BMP_RLE8
 647                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 648                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 649                 if (compression == BMP_BI_RLE8) {
 650                         if (bpix != 16) {
 651                                 /* TODO implement render code for bpix != 16 */
 652                                 printf("Error: only support 16 bpix");
 653                                 return 1;
 654                         }
 655                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 656                         break;
 657                 }
 658 #endif
 659
 660                 if (bpix != 16)
 661                         byte_width = width;
 662                 else
 663                         byte_width = width * 2;
 664
 665                 for (i = 0; i < height; ++i) {
 666                         WATCHDOG_RESET();
 667                         for (j = 0; j < width; j++) {
 668                                 if (bpix != 16) {
 669                                         fb_put_byte(&fb, &bmap);
 670                                 } else {
 671                                         struct bmp_color_table_entry *entry;
 672                                         uint val;
 673
 674                                         if (cmap_base) {
 675                                                 val = cmap_base[*bmap];
 676                                         } else {
 677                                                 entry = &palette[*bmap];
 678                                                 val = entry->blue >> 3 |
 679                                                         entry->green >> 2 << 5 |
 680                                                         entry->red >> 3 << 11;
 681                                         }
 682                                         *(uint16_t *)fb = val;
 683                                         bmap++;
 684                                         fb += sizeof(uint16_t) / sizeof(*fb);
 685                                 }
 686                         }
 687                         bmap += (padded_width - width);
 688                         fb -= byte_width + lcd_line_length;
 689                 }
 690                 break;
 691         }
 692 #if defined(CONFIG_BMP_16BPP)
 693         case 16:
 694                 for (i = 0; i < height; ++i) {
 695                         WATCHDOG_RESET();
 696                         for (j = 0; j < width; j++)
 697                                 fb_put_word(&fb, &bmap);
 698
 699                         bmap += (padded_width - width) * 2;
 700                         fb -= width * 2 + lcd_line_length;
 701                 }
 702                 break;
 703 #endif /* CONFIG_BMP_16BPP */
 704 #if defined(CONFIG_BMP_24BPP)
 705         case 24:
 706                 for (i = 0; i < height; ++i) {
 707                         for (j = 0; j < width; j++) {
 708                                 *(fb++) = *(bmap++);
 709                                 *(fb++) = *(bmap++);
 710                                 *(fb++) = *(bmap++);
 711                                 *(fb++) = 0;
 712                         }
 713                         fb -= lcd_line_length + width * (bpix / 8);
 714                 }
 715                 break;
 716 #endif /* CONFIG_BMP_24BPP */
 717 #if defined(CONFIG_BMP_32BPP)
 718         case 32:
 719                 for (i = 0; i < height; ++i) {
 720                         for (j = 0; j < width; j++) {
 721                                 *(fb++) = *(bmap++);
 722                                 *(fb++) = *(bmap++);
 723                                 *(fb++) = *(bmap++);
 724                                 *(fb++) = *(bmap++);
 725                         }
 726                         fb -= lcd_line_length + width * (bpix / 8);
 727                 }
 728                 break;
 729 #endif /* CONFIG_BMP_32BPP */
 730         default:
 731                 break;
 732         };
 733
 734         lcd_sync();
 735         return 0;
 736 }
 737 #endif
 738
 739 static void lcd_logo(void)
 740 {
 741         lcd_logo_plot(0, 0);
 742
 743 #ifdef CONFIG_LCD_INFO
 744         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 745         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 746         lcd_show_board_info();
 747 #endif /* CONFIG_LCD_INFO */
 748 }
 749
 750 #ifdef CONFIG_SPLASHIMAGE_GUARD
 751 static int on_splashimage(const char *name, const char *value, enum env_op op,
 752         int flags)
 753 {
 754         ulong addr;
 755         int aligned;
 756
 757         if (op == env_op_delete)
 758                 return 0;
 759
 760         addr = simple_strtoul(value, NULL, 16);
 761         /* See README.displaying-bmps */
 762         aligned = (addr % 4 == 2);
 763         if (!aligned) {
 764                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 765                 return -1;
 766         }
 767
 768         return 0;
 769 }
 770
 771 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 772 #endif
 773
 774 int lcd_get_pixel_width(void)
 775 {
 776         return panel_info.vl_col;
 777 }
 778
 779 int lcd_get_pixel_height(void)
 780 {
 781         return panel_info.vl_row;
 782 }