git.sur5r.net Git - u-boot/blob - 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 <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 #ifdef CONFIG_SANDBOX
  34 #include <asm/sdl.h>
  35 #endif
  36
  37 #ifndef CONFIG_LCD_ALIGNMENT
  38 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  39 #endif
  40
  41 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  42         (LCD_BPP != LCD_COLOR32)
  43 #error Unsupported LCD BPP.
  44 #endif
  45
  46 DECLARE_GLOBAL_DATA_PTR;
  47
  48 static int lcd_init(void *lcdbase);
  49 static void *lcd_logo(void);
  50 static void lcd_setfgcolor(int color);
  51 static void lcd_setbgcolor(int color);
  52
  53 static int lcd_color_fg;
  54 static int lcd_color_bg;
  55 int lcd_line_length;
  56 char lcd_is_enabled = 0;
  57 static void *lcd_base;                  /* Start of framebuffer memory  */
  58 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  59
  60 /* Flush LCD activity to the caches */
  61 void lcd_sync(void)
  62 {
  63         /*
  64          * flush_dcache_range() is declared in common.h but it seems that some
  65          * architectures do not actually implement it. Is there a way to find
  66          * out whether it exists? For now, ARM is safe.
  67          */
  68 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  69         int line_length;
  70
  71         if (lcd_flush_dcache)
  72                 flush_dcache_range((u32)lcd_base,
  73                         (u32)(lcd_base + lcd_get_size(&line_length)));
  74 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
  75         static ulong last_sync;
  76
  77         if (get_timer(last_sync) > 10) {
  78                 sandbox_sdl_sync(lcd_base);
  79                 last_sync = get_timer(0);
  80         }
  81 #endif
  82 }
  83
  84 void lcd_set_flush_dcache(int flush)
  85 {
  86         lcd_flush_dcache = (flush != 0);
  87 }
  88
  89 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  90 {
  91         lcd_putc(c);
  92 }
  93
  94 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  95 {
  96         lcd_puts(s);
  97 }
  98
  99 /* Small utility to check that you got the colours right */
 100 #ifdef LCD_TEST_PATTERN
 101
 102 #define N_BLK_VERT      2
 103 #define N_BLK_HOR       3
 104
 105 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 106         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 107         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 108 };
 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         uchar *pix = (uchar *)lcd_base;
 118
 119         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 120                 h_max, v_max, h_step, v_step);
 121
 122         /* WARNING: Code silently assumes 8bit/pixel */
 123         for (v = 0; v < v_max; ++v) {
 124                 uchar iy = v / v_step;
 125                 for (h = 0; h < h_max; ++h) {
 126                         uchar ix = N_BLK_HOR * iy + h / h_step;
 127                         *pix++ = test_colors[ix];
 128                 }
 129         }
 130 }
 131 #endif /* LCD_TEST_PATTERN */
 132
 133 /*
 134  * With most lcd drivers the line length is set up
 135  * by calculating it from panel_info parameters. Some
 136  * drivers need to calculate the line length differently,
 137  * so make the function weak to allow overriding it.
 138  */
 139 __weak int lcd_get_size(int *line_length)
 140 {
 141         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 142         return *line_length * panel_info.vl_row;
 143 }
 144
 145 int drv_lcd_init(void)
 146 {
 147         struct stdio_dev lcddev;
 148         int rc;
 149
 150         lcd_base = map_sysmem(gd->fb_base, 0);
 151
 152         lcd_init(lcd_base);
 153
 154         /* Device initialization */
 155         memset(&lcddev, 0, sizeof(lcddev));
 156
 157         strcpy(lcddev.name, "lcd");
 158         lcddev.ext   = 0;                       /* No extensions */
 159         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 160         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 161         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 162
 163         rc = stdio_register(&lcddev);
 164
 165         return (rc == 0) ? 1 : rc;
 166 }
 167
 168 void lcd_clear(void)
 169 {
 170         short console_rows, console_cols;
 171         int bg_color;
 172 #if LCD_BPP == LCD_COLOR8
 173         /* Setting the palette */
 174         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 175         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 176         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 177         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 178         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 179         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 180         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 181         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 182         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 183 #endif
 184
 185 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 186         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 187         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 188         bg_color = CONSOLE_COLOR_WHITE;
 189 #else
 190         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 191         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 192         bg_color = CONSOLE_COLOR_BLACK;
 193 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 194
 195 #ifdef  LCD_TEST_PATTERN
 196         test_pattern();
 197 #else
 198         /* set framebuffer to background color */
 199 #if (LCD_BPP != LCD_COLOR32)
 200         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 201 #else
 202         u32 *ppix = lcd_base;
 203         u32 i;
 204         for (i = 0;
 205            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 206            i++) {
 207                 *ppix++ = bg_color;
 208         }
 209 #endif
 210 #endif
 211         /* Paint the logo and retrieve LCD base address */
 212         debug("[LCD] Drawing the logo...\n");
 213 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 214         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 215         console_rows /= VIDEO_FONT_HEIGHT;
 216 #else
 217         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 218 #endif
 219         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 220         lcd_init_console(lcd_base, console_rows, console_cols);
 221         lcd_init_console(lcd_logo(), console_rows, console_cols);
 222         lcd_sync();
 223 }
 224
 225 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 226                         char *const argv[])
 227 {
 228         lcd_clear();
 229         return 0;
 230 }
 231 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 232
 233 static int lcd_init(void *lcdbase)
 234 {
 235         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 236         lcd_ctrl_init(lcdbase);
 237
 238         /*
 239          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 240          * the 'lcdbase' argument and uses custom lcd base address
 241          * by setting up gd->fb_base. Check for this condition and fixup
 242          * 'lcd_base' address.
 243          */
 244         if (map_to_sysmem(lcdbase) != gd->fb_base)
 245                 lcd_base = map_sysmem(gd->fb_base, 0);
 246
 247         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 248
 249         lcd_get_size(&lcd_line_length);
 250         lcd_is_enabled = 1;
 251         lcd_clear();
 252         lcd_enable();
 253
 254         /* Initialize the console */
 255         lcd_set_col(0);
 256 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 257         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 258 #else
 259         lcd_set_row(1); /* leave 1 blank line below logo */
 260 #endif
 261
 262         return 0;
 263 }
 264
 265 /*
 266  * This is called early in the system initialization to grab memory
 267  * for the LCD controller.
 268  * Returns new address for monitor, after reserving LCD buffer memory
 269  *
 270  * Note that this is running from ROM, so no write access to global data.
 271  */
 272 ulong lcd_setmem(ulong addr)
 273 {
 274         ulong size;
 275         int line_length;
 276
 277         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 278                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 279
 280         size = lcd_get_size(&line_length);
 281
 282         /* Round up to nearest full page, or MMU section if defined */
 283         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 284         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 285
 286         /* Allocate pages for the frame buffer. */
 287         addr -= size;
 288
 289         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 290               size >> 10, addr);
 291
 292         return addr;
 293 }
 294
 295 static void lcd_setfgcolor(int color)
 296 {
 297         lcd_color_fg = color;
 298 }
 299
 300 int lcd_getfgcolor(void)
 301 {
 302         return lcd_color_fg;
 303 }
 304
 305 static void lcd_setbgcolor(int color)
 306 {
 307         lcd_color_bg = color;
 308 }
 309
 310 int lcd_getbgcolor(void)
 311 {
 312         return lcd_color_bg;
 313 }
 314
 315 #ifdef CONFIG_LCD_LOGO
 316 __weak void lcd_logo_set_cmap(void)
 317 {
 318         int i;
 319         ushort *cmap = configuration_get_cmap();
 320
 321         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 322                 *cmap++ = bmp_logo_palette[i];
 323 }
 324
 325 void lcd_logo_plot(int x, int y)
 326 {
 327         ushort i, j;
 328         uchar *bmap = &bmp_logo_bitmap[0];
 329         unsigned bpix = NBITS(panel_info.vl_bpix);
 330         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 331         ushort *fb16;
 332
 333         debug("Logo: width %d  height %d  colors %d\n",
 334               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 335
 336         if (bpix < 12) {
 337                 WATCHDOG_RESET();
 338                 lcd_logo_set_cmap();
 339                 WATCHDOG_RESET();
 340
 341                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 342                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 343                         bmap += BMP_LOGO_WIDTH;
 344                         fb += panel_info.vl_col;
 345                 }
 346         }
 347         else { /* true color mode */
 348                 u16 col16;
 349                 fb16 = (ushort *)fb;
 350                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 351                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 352                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 353                                 fb16[j] =
 354                                         ((col16 & 0x000F) << 1) |
 355                                         ((col16 & 0x00F0) << 3) |
 356                                         ((col16 & 0x0F00) << 4);
 357                                 }
 358                         bmap += BMP_LOGO_WIDTH;
 359                         fb16 += panel_info.vl_col;
 360                 }
 361         }
 362
 363         WATCHDOG_RESET();
 364         lcd_sync();
 365 }
 366 #else
 367 static inline void lcd_logo_plot(int x, int y) {}
 368 #endif /* CONFIG_LCD_LOGO */
 369
 370 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 371 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 372 #define BMP_ALIGN_CENTER        0x7FFF
 373
 374 static void splash_align_axis(int *axis, unsigned long panel_size,
 375                                         unsigned long picture_size)
 376 {
 377         unsigned long panel_picture_delta = panel_size - picture_size;
 378         unsigned long axis_alignment;
 379
 380         if (*axis == BMP_ALIGN_CENTER)
 381                 axis_alignment = panel_picture_delta / 2;
 382         else if (*axis < 0)
 383                 axis_alignment = panel_picture_delta + *axis + 1;
 384         else
 385                 return;
 386
 387         *axis = max(0, (int)axis_alignment);
 388 }
 389 #endif
 390
 391 #ifdef CONFIG_LCD_BMP_RLE8
 392 #define BMP_RLE8_ESCAPE         0
 393 #define BMP_RLE8_EOL            0
 394 #define BMP_RLE8_EOBMP          1
 395 #define BMP_RLE8_DELTA          2
 396
 397 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 398                                   int cnt)
 399 {
 400         while (cnt > 0) {
 401                 *(*fbp)++ = cmap[*bmap++];
 402                 cnt--;
 403         }
 404 }
 405
 406 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 407 {
 408         ushort *fb = *fbp;
 409         int cnt_8copy = cnt >> 3;
 410
 411         cnt -= cnt_8copy << 3;
 412         while (cnt_8copy > 0) {
 413                 *fb++ = c;
 414                 *fb++ = c;
 415                 *fb++ = c;
 416                 *fb++ = c;
 417                 *fb++ = c;
 418                 *fb++ = c;
 419                 *fb++ = c;
 420                 *fb++ = c;
 421                 cnt_8copy--;
 422         }
 423         while (cnt > 0) {
 424                 *fb++ = c;
 425                 cnt--;
 426         }
 427         *fbp = fb;
 428 }
 429
 430 /*
 431  * Do not call this function directly, must be called from lcd_display_bitmap.
 432  */
 433 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 434                                     int x_off, int y_off)
 435 {
 436         uchar *bmap;
 437         ulong width, height;
 438         ulong cnt, runlen;
 439         int x, y;
 440         int decode = 1;
 441
 442         width = get_unaligned_le32(&bmp->header.width);
 443         height = get_unaligned_le32(&bmp->header.height);
 444         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 445
 446         x = 0;
 447         y = height - 1;
 448
 449         while (decode) {
 450                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 451                         switch (bmap[1]) {
 452                         case BMP_RLE8_EOL:
 453                                 /* end of line */
 454                                 bmap += 2;
 455                                 x = 0;
 456                                 y--;
 457                                 /* 16bpix, 2-byte per pixel, width should *2 */
 458                                 fb -= (width * 2 + lcd_line_length);
 459                                 break;
 460                         case BMP_RLE8_EOBMP:
 461                                 /* end of bitmap */
 462                                 decode = 0;
 463                                 break;
 464                         case BMP_RLE8_DELTA:
 465                                 /* delta run */
 466                                 x += bmap[2];
 467                                 y -= bmap[3];
 468                                 /* 16bpix, 2-byte per pixel, x should *2 */
 469                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 470                                         * lcd_line_length + (x + x_off) * 2);
 471                                 bmap += 4;
 472                                 break;
 473                         default:
 474                                 /* unencoded run */
 475                                 runlen = bmap[1];
 476                                 bmap += 2;
 477                                 if (y < height) {
 478                                         if (x < width) {
 479                                                 if (x + runlen > width)
 480                                                         cnt = width - x;
 481                                                 else
 482                                                         cnt = runlen;
 483                                                 draw_unencoded_bitmap(
 484                                                         (ushort **)&fb,
 485                                                         bmap, cmap, cnt);
 486                                         }
 487                                         x += runlen;
 488                                 }
 489                                 bmap += runlen;
 490                                 if (runlen & 1)
 491                                         bmap++;
 492                         }
 493                 } else {
 494                         /* encoded run */
 495                         if (y < height) {
 496                                 runlen = bmap[0];
 497                                 if (x < width) {
 498                                         /* aggregate the same code */
 499                                         while (bmap[0] == 0xff &&
 500                                                bmap[2] != BMP_RLE8_ESCAPE &&
 501                                                bmap[1] == bmap[3]) {
 502                                                 runlen += bmap[2];
 503                                                 bmap += 2;
 504                                         }
 505                                         if (x + runlen > width)
 506                                                 cnt = width - x;
 507                                         else
 508                                                 cnt = runlen;
 509                                         draw_encoded_bitmap((ushort **)&fb,
 510                                                 cmap[bmap[1]], cnt);
 511                                 }
 512                                 x += runlen;
 513                         }
 514                         bmap += 2;
 515                 }
 516         }
 517 }
 518 #endif
 519
 520 __weak void fb_put_byte(uchar **fb, uchar **from)
 521 {
 522         *(*fb)++ = *(*from)++;
 523 }
 524
 525 #if defined(CONFIG_BMP_16BPP)
 526 __weak void fb_put_word(uchar **fb, uchar **from)
 527 {
 528         *(*fb)++ = *(*from)++;
 529         *(*fb)++ = *(*from)++;
 530 }
 531 #endif /* CONFIG_BMP_16BPP */
 532
 533 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 534 {
 535         int i;
 536         bmp_color_table_entry_t cte;
 537         ushort *cmap = configuration_get_cmap();
 538
 539         for (i = 0; i < colors; ++i) {
 540                 cte = bmp->color_table[i];
 541                 *cmap = (((cte.red)   << 8) & 0xf800) |
 542                         (((cte.green) << 3) & 0x07e0) |
 543                         (((cte.blue)  >> 3) & 0x001f);
 544 #if defined(CONFIG_MPC823)
 545                 cmap--;
 546 #else
 547                 cmap++;
 548 #endif
 549         }
 550 }
 551
 552 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 553 {
 554         ushort *cmap_base = NULL;
 555         ushort i, j;
 556         uchar *fb;
 557         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 558         uchar *bmap;
 559         ushort padded_width;
 560         unsigned long width, height, byte_width;
 561         unsigned long pwidth = panel_info.vl_col;
 562         unsigned colors, bpix, bmp_bpix;
 563
 564         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 565                 bmp->header.signature[1] == 'M')) {
 566                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 567
 568                 return 1;
 569         }
 570
 571         width = get_unaligned_le32(&bmp->header.width);
 572         height = get_unaligned_le32(&bmp->header.height);
 573         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 574
 575         colors = 1 << bmp_bpix;
 576
 577         bpix = NBITS(panel_info.vl_bpix);
 578
 579         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 580                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 581                         bpix, bmp_bpix);
 582
 583                 return 1;
 584         }
 585
 586         /*
 587          * We support displaying 8bpp BMPs on 16bpp LCDs
 588          * and displaying 24bpp BMPs on 32bpp LCDs
 589          * */
 590         if (bpix != bmp_bpix &&
 591             !(bmp_bpix == 8 && bpix == 16) &&
 592             !(bmp_bpix == 24 && bpix == 32)) {
 593                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 594                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 595                 return 1;
 596         }
 597
 598         debug("Display-bmp: %d x %d  with %d colors\n",
 599                 (int)width, (int)height, (int)colors);
 600
 601         if (bmp_bpix == 8)
 602                 lcd_set_cmap(bmp, colors);
 603
 604         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 605
 606 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 607         splash_align_axis(&x, pwidth, width);
 608         splash_align_axis(&y, panel_info.vl_row, height);
 609 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 610
 611         if ((x + width) > pwidth)
 612                 width = pwidth - x;
 613         if ((y + height) > panel_info.vl_row)
 614                 height = panel_info.vl_row - y;
 615
 616         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 617         fb   = (uchar *)(lcd_base +
 618                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 619
 620         switch (bmp_bpix) {
 621         case 1:
 622         case 8: {
 623                 cmap_base = configuration_get_cmap();
 624 #ifdef CONFIG_LCD_BMP_RLE8
 625                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 626                 if (compression == BMP_BI_RLE8) {
 627                         if (bpix != 16) {
 628                                 /* TODO implement render code for bpix != 16 */
 629                                 printf("Error: only support 16 bpix");
 630                                 return 1;
 631                         }
 632                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 633                         break;
 634                 }
 635 #endif
 636
 637                 if (bpix != 16)
 638                         byte_width = width;
 639                 else
 640                         byte_width = width * 2;
 641
 642                 for (i = 0; i < height; ++i) {
 643                         WATCHDOG_RESET();
 644                         for (j = 0; j < width; j++) {
 645                                 if (bpix != 16) {
 646                                         fb_put_byte(&fb, &bmap);
 647                                 } else {
 648                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 649                                         fb += sizeof(uint16_t) / sizeof(*fb);
 650                                 }
 651                         }
 652                         bmap += (padded_width - width);
 653                         fb -= byte_width + lcd_line_length;
 654                 }
 655                 break;
 656         }
 657 #if defined(CONFIG_BMP_16BPP)
 658         case 16:
 659                 for (i = 0; i < height; ++i) {
 660                         WATCHDOG_RESET();
 661                         for (j = 0; j < width; j++)
 662                                 fb_put_word(&fb, &bmap);
 663
 664                         bmap += (padded_width - width) * 2;
 665                         fb -= width * 2 + lcd_line_length;
 666                 }
 667                 break;
 668 #endif /* CONFIG_BMP_16BPP */
 669 #if defined(CONFIG_BMP_24BMP)
 670         case 24:
 671                 for (i = 0; i < height; ++i) {
 672                         for (j = 0; j < width; j++) {
 673                                 *(fb++) = *(bmap++);
 674                                 *(fb++) = *(bmap++);
 675                                 *(fb++) = *(bmap++);
 676                                 *(fb++) = 0;
 677                         }
 678                         fb -= lcd_line_length + width * (bpix / 8);
 679                 }
 680                 break;
 681 #endif /* CONFIG_BMP_24BMP */
 682 #if defined(CONFIG_BMP_32BPP)
 683         case 32:
 684                 for (i = 0; i < height; ++i) {
 685                         for (j = 0; j < width; j++) {
 686                                 *(fb++) = *(bmap++);
 687                                 *(fb++) = *(bmap++);
 688                                 *(fb++) = *(bmap++);
 689                                 *(fb++) = *(bmap++);
 690                         }
 691                         fb -= lcd_line_length + width * (bpix / 8);
 692                 }
 693                 break;
 694 #endif /* CONFIG_BMP_32BPP */
 695         default:
 696                 break;
 697         };
 698
 699         lcd_sync();
 700         return 0;
 701 }
 702 #endif
 703
 704 static void *lcd_logo(void)
 705 {
 706 #ifdef CONFIG_SPLASH_SCREEN
 707         char *s;
 708         ulong addr;
 709         static int do_splash = 1;
 710
 711         if (do_splash && (s = getenv("splashimage")) != NULL) {
 712                 int x = 0, y = 0;
 713                 do_splash = 0;
 714
 715                 if (splash_screen_prepare())
 716                         return (void *)lcd_base;
 717
 718                 addr = simple_strtoul (s, NULL, 16);
 719
 720                 splash_get_pos(&x, &y);
 721
 722                 if (bmp_display(addr, x, y) == 0)
 723                         return (void *)lcd_base;
 724         }
 725 #endif /* CONFIG_SPLASH_SCREEN */
 726
 727         lcd_logo_plot(0, 0);
 728
 729 #ifdef CONFIG_LCD_INFO
 730         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 731         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 732         lcd_show_board_info();
 733 #endif /* CONFIG_LCD_INFO */
 734
 735 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 736         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
 737 #else
 738         return (void *)lcd_base;
 739 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
 740 }
 741
 742 #ifdef CONFIG_SPLASHIMAGE_GUARD
 743 static int on_splashimage(const char *name, const char *value, enum env_op op,
 744         int flags)
 745 {
 746         ulong addr;
 747         int aligned;
 748
 749         if (op == env_op_delete)
 750                 return 0;
 751
 752         addr = simple_strtoul(value, NULL, 16);
 753         /* See README.displaying-bmps */
 754         aligned = (addr % 4 == 2);
 755         if (!aligned) {
 756                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 757                 return -1;
 758         }
 759
 760         return 0;
 761 }
 762
 763 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 764 #endif
 765
 766 int lcd_get_pixel_width(void)
 767 {
 768         return panel_info.vl_col;
 769 }
 770
 771 int lcd_get_pixel_height(void)
 772 {
 773         return panel_info.vl_row;
 774 }