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 #if LCD_BPP == LCD_COLOR8
 111 typedef uchar pix_t;
 112 #elif LCD_BPP == LCD_COLOR16
 113 typedef ushort pix_t;
 114 #elif LCD_BPP == LCD_COLOR32
 115 typedef ulong pix_t;
 116 #else
 117 #error Unsupported pixelformat
 118 #endif
 119
 120 static void test_pattern(void)
 121 {
 122         ushort v_max  = panel_info.vl_row;
 123         ushort h_max  = panel_info.vl_col;
 124         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 125         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 126         ushort v, h;
 127         pix_t *pix = lcd_base;
 128
 129         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 130                 h_max, v_max, h_step, v_step);
 131
 132         for (v = 0; v < v_max; ++v) {
 133                 uchar iy = v / v_step;
 134                 for (h = 0; h < h_max; ++h) {
 135                         uchar ix = N_BLK_HOR * iy + h / h_step;
 136                         *pix++ = test_colors[ix];
 137                 }
 138         }
 139 }
 140 #endif /* LCD_TEST_PATTERN */
 141
 142 /*
 143  * With most lcd drivers the line length is set up
 144  * by calculating it from panel_info parameters. Some
 145  * drivers need to calculate the line length differently,
 146  * so make the function weak to allow overriding it.
 147  */
 148 __weak int lcd_get_size(int *line_length)
 149 {
 150         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 151         return *line_length * panel_info.vl_row;
 152 }
 153
 154 int drv_lcd_init(void)
 155 {
 156         struct stdio_dev lcddev;
 157         int rc;
 158
 159         lcd_base = map_sysmem(gd->fb_base, 0);
 160
 161         lcd_init(lcd_base);
 162
 163         /* Device initialization */
 164         memset(&lcddev, 0, sizeof(lcddev));
 165
 166         strcpy(lcddev.name, "lcd");
 167         lcddev.ext   = 0;                       /* No extensions */
 168         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 169         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 170         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 171
 172         rc = stdio_register(&lcddev);
 173
 174         return (rc == 0) ? 1 : rc;
 175 }
 176
 177 void lcd_clear(void)
 178 {
 179         int bg_color;
 180         char *s;
 181         ulong addr;
 182         static int do_splash = 1;
 183 #if LCD_BPP == LCD_COLOR8
 184         /* Setting the palette */
 185         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 186         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 187         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 188         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 189         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 190         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 191         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 192         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 193         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 194 #endif
 195
 196 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 197         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 198         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 199         bg_color = CONSOLE_COLOR_WHITE;
 200 #else
 201         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 202         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 203         bg_color = CONSOLE_COLOR_BLACK;
 204 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 205
 206 #ifdef  LCD_TEST_PATTERN
 207         test_pattern();
 208 #else
 209         /* set framebuffer to background color */
 210 #if (LCD_BPP != LCD_COLOR32)
 211         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 212 #else
 213         u32 *ppix = lcd_base;
 214         u32 i;
 215         for (i = 0;
 216            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 217            i++) {
 218                 *ppix++ = bg_color;
 219         }
 220 #endif
 221 #endif
 222         /* setup text-console */
 223         debug("[LCD] setting up console...\n");
 224         lcd_init_console(lcd_base,
 225                          panel_info.vl_col,
 226                          panel_info.vl_row,
 227                          panel_info.vl_rot);
 228         /* Paint the logo and retrieve LCD base address */
 229         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 230         if (do_splash) {
 231                 s = getenv("splashimage");
 232                 if (s) {
 233                         do_splash = 0;
 234                         addr = simple_strtoul(s, NULL, 16);
 235                         if (lcd_splash(addr) == 0) {
 236                                 lcd_sync();
 237                                 return;
 238                         }
 239                 }
 240         }
 241
 242         lcd_logo();
 243 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 244         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 245         lcd_init_console((void *)addr, panel_info.vl_row,
 246                          panel_info.vl_col, panel_info.vl_rot);
 247 #endif
 248         lcd_sync();
 249 }
 250
 251 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 252                         char *const argv[])
 253 {
 254         lcd_clear();
 255         return 0;
 256 }
 257 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 258
 259 static int lcd_init(void *lcdbase)
 260 {
 261         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 262                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 263                 lcdbase);
 264
 265         lcd_ctrl_init(lcdbase);
 266
 267         /*
 268          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 269          * the 'lcdbase' argument and uses custom lcd base address
 270          * by setting up gd->fb_base. Check for this condition and fixup
 271          * 'lcd_base' address.
 272          */
 273         if (map_to_sysmem(lcdbase) != gd->fb_base)
 274                 lcd_base = map_sysmem(gd->fb_base, 0);
 275
 276         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 277
 278         lcd_get_size(&lcd_line_length);
 279         lcd_is_enabled = 1;
 280         lcd_clear();
 281         lcd_enable();
 282
 283         /* Initialize the console */
 284         lcd_set_col(0);
 285 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 286         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 287 #else
 288         lcd_set_row(1); /* leave 1 blank line below logo */
 289 #endif
 290
 291         return 0;
 292 }
 293
 294 /*
 295  * This is called early in the system initialization to grab memory
 296  * for the LCD controller.
 297  * Returns new address for monitor, after reserving LCD buffer memory
 298  *
 299  * Note that this is running from ROM, so no write access to global data.
 300  */
 301 ulong lcd_setmem(ulong addr)
 302 {
 303         ulong size;
 304         int line_length;
 305
 306         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 307                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 308
 309         size = lcd_get_size(&line_length);
 310
 311         /* Round up to nearest full page, or MMU section if defined */
 312         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 313         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 314
 315         /* Allocate pages for the frame buffer. */
 316         addr -= size;
 317
 318         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 319               size >> 10, addr);
 320
 321         return addr;
 322 }
 323
 324 static void lcd_setfgcolor(int color)
 325 {
 326         lcd_color_fg = color;
 327 }
 328
 329 int lcd_getfgcolor(void)
 330 {
 331         return lcd_color_fg;
 332 }
 333
 334 static void lcd_setbgcolor(int color)
 335 {
 336         lcd_color_bg = color;
 337 }
 338
 339 int lcd_getbgcolor(void)
 340 {
 341         return lcd_color_bg;
 342 }
 343
 344 #ifdef CONFIG_LCD_LOGO
 345 __weak void lcd_logo_set_cmap(void)
 346 {
 347         int i;
 348         ushort *cmap = configuration_get_cmap();
 349
 350         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 351                 *cmap++ = bmp_logo_palette[i];
 352 }
 353
 354 void lcd_logo_plot(int x, int y)
 355 {
 356         ushort i, j;
 357         uchar *bmap = &bmp_logo_bitmap[0];
 358         unsigned bpix = NBITS(panel_info.vl_bpix);
 359         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 360         ushort *fb16;
 361
 362         debug("Logo: width %d  height %d  colors %d\n",
 363               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 364
 365         if (bpix < 12) {
 366                 WATCHDOG_RESET();
 367                 lcd_logo_set_cmap();
 368                 WATCHDOG_RESET();
 369
 370                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 371                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 372                         bmap += BMP_LOGO_WIDTH;
 373                         fb += panel_info.vl_col;
 374                 }
 375         } else if (NBITS(panel_info.vl_bpix) == 16) {
 376                 u16 col16;
 377                 fb16 = (ushort *)fb;
 378                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 379                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 380                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 381                                 fb16[j] =
 382                                         ((col16 & 0x000F) << 1) |
 383                                         ((col16 & 0x00F0) << 3) |
 384                                         ((col16 & 0x0F00) << 4);
 385                                 }
 386                         bmap += BMP_LOGO_WIDTH;
 387                         fb16 += panel_info.vl_col;
 388                 }
 389         } else { /* true color mode */
 390                 u16 col16;
 391                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 392
 393                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 394                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 395                                 col16 = bmp_logo_palette[bmap[j] - 16];
 396                                 fb32[j] =
 397                                         ((col16 & 0x000F) << 4) |
 398                                         ((col16 & 0x00F0) << 8) |
 399                                         ((col16 & 0x0F00) << 12);
 400                                 }
 401                         bmap += BMP_LOGO_WIDTH;
 402                         fb32 += panel_info.vl_col;
 403                 }
 404         }
 405
 406         WATCHDOG_RESET();
 407         lcd_sync();
 408 }
 409 #else
 410 static inline void lcd_logo_plot(int x, int y) {}
 411 #endif /* CONFIG_LCD_LOGO */
 412
 413 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 414 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 415 #define BMP_ALIGN_CENTER        0x7FFF
 416
 417 static void splash_align_axis(int *axis, unsigned long panel_size,
 418                                         unsigned long picture_size)
 419 {
 420         unsigned long panel_picture_delta = panel_size - picture_size;
 421         unsigned long axis_alignment;
 422
 423         if (*axis == BMP_ALIGN_CENTER)
 424                 axis_alignment = panel_picture_delta / 2;
 425         else if (*axis < 0)
 426                 axis_alignment = panel_picture_delta + *axis + 1;
 427         else
 428                 return;
 429
 430         *axis = max(0, (int)axis_alignment);
 431 }
 432 #endif
 433
 434 #ifdef CONFIG_LCD_BMP_RLE8
 435 #define BMP_RLE8_ESCAPE         0
 436 #define BMP_RLE8_EOL            0
 437 #define BMP_RLE8_EOBMP          1
 438 #define BMP_RLE8_DELTA          2
 439
 440 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 441                                   int cnt)
 442 {
 443         while (cnt > 0) {
 444                 *(*fbp)++ = cmap[*bmap++];
 445                 cnt--;
 446         }
 447 }
 448
 449 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 450 {
 451         ushort *fb = *fbp;
 452         int cnt_8copy = cnt >> 3;
 453
 454         cnt -= cnt_8copy << 3;
 455         while (cnt_8copy > 0) {
 456                 *fb++ = c;
 457                 *fb++ = c;
 458                 *fb++ = c;
 459                 *fb++ = c;
 460                 *fb++ = c;
 461                 *fb++ = c;
 462                 *fb++ = c;
 463                 *fb++ = c;
 464                 cnt_8copy--;
 465         }
 466         while (cnt > 0) {
 467                 *fb++ = c;
 468                 cnt--;
 469         }
 470         *fbp = fb;
 471 }
 472
 473 /*
 474  * Do not call this function directly, must be called from lcd_display_bitmap.
 475  */
 476 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 477                                     int x_off, int y_off)
 478 {
 479         uchar *bmap;
 480         ulong width, height;
 481         ulong cnt, runlen;
 482         int x, y;
 483         int decode = 1;
 484
 485         width = get_unaligned_le32(&bmp->header.width);
 486         height = get_unaligned_le32(&bmp->header.height);
 487         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 488
 489         x = 0;
 490         y = height - 1;
 491
 492         while (decode) {
 493                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 494                         switch (bmap[1]) {
 495                         case BMP_RLE8_EOL:
 496                                 /* end of line */
 497                                 bmap += 2;
 498                                 x = 0;
 499                                 y--;
 500                                 /* 16bpix, 2-byte per pixel, width should *2 */
 501                                 fb -= (width * 2 + lcd_line_length);
 502                                 break;
 503                         case BMP_RLE8_EOBMP:
 504                                 /* end of bitmap */
 505                                 decode = 0;
 506                                 break;
 507                         case BMP_RLE8_DELTA:
 508                                 /* delta run */
 509                                 x += bmap[2];
 510                                 y -= bmap[3];
 511                                 /* 16bpix, 2-byte per pixel, x should *2 */
 512                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 513                                         * lcd_line_length + (x + x_off) * 2);
 514                                 bmap += 4;
 515                                 break;
 516                         default:
 517                                 /* unencoded run */
 518                                 runlen = bmap[1];
 519                                 bmap += 2;
 520                                 if (y < height) {
 521                                         if (x < width) {
 522                                                 if (x + runlen > width)
 523                                                         cnt = width - x;
 524                                                 else
 525                                                         cnt = runlen;
 526                                                 draw_unencoded_bitmap(
 527                                                         (ushort **)&fb,
 528                                                         bmap, cmap, cnt);
 529                                         }
 530                                         x += runlen;
 531                                 }
 532                                 bmap += runlen;
 533                                 if (runlen & 1)
 534                                         bmap++;
 535                         }
 536                 } else {
 537                         /* encoded run */
 538                         if (y < height) {
 539                                 runlen = bmap[0];
 540                                 if (x < width) {
 541                                         /* aggregate the same code */
 542                                         while (bmap[0] == 0xff &&
 543                                                bmap[2] != BMP_RLE8_ESCAPE &&
 544                                                bmap[1] == bmap[3]) {
 545                                                 runlen += bmap[2];
 546                                                 bmap += 2;
 547                                         }
 548                                         if (x + runlen > width)
 549                                                 cnt = width - x;
 550                                         else
 551                                                 cnt = runlen;
 552                                         draw_encoded_bitmap((ushort **)&fb,
 553                                                 cmap[bmap[1]], cnt);
 554                                 }
 555                                 x += runlen;
 556                         }
 557                         bmap += 2;
 558                 }
 559         }
 560 }
 561 #endif
 562
 563 __weak void fb_put_byte(uchar **fb, uchar **from)
 564 {
 565         *(*fb)++ = *(*from)++;
 566 }
 567
 568 #if defined(CONFIG_BMP_16BPP)
 569 __weak void fb_put_word(uchar **fb, uchar **from)
 570 {
 571         *(*fb)++ = *(*from)++;
 572         *(*fb)++ = *(*from)++;
 573 }
 574 #endif /* CONFIG_BMP_16BPP */
 575
 576 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 577 {
 578         int i;
 579         bmp_color_table_entry_t cte;
 580         ushort *cmap = configuration_get_cmap();
 581
 582         for (i = 0; i < colors; ++i) {
 583                 cte = bmp->color_table[i];
 584                 *cmap = (((cte.red)   << 8) & 0xf800) |
 585                         (((cte.green) << 3) & 0x07e0) |
 586                         (((cte.blue)  >> 3) & 0x001f);
 587 #if defined(CONFIG_MPC823)
 588                 cmap--;
 589 #else
 590                 cmap++;
 591 #endif
 592         }
 593 }
 594
 595 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 596 {
 597         ushort *cmap_base = NULL;
 598         ushort i, j;
 599         uchar *fb;
 600         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 601         uchar *bmap;
 602         ushort padded_width;
 603         unsigned long width, height;
 604         unsigned long pwidth = panel_info.vl_col;
 605         unsigned long long colors;
 606         unsigned bpix, bmp_bpix;
 607         bmp_color_table_entry_t *cte;
 608
 609         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 610                 bmp->header.signature[1] == 'M')) {
 611                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 612
 613                 return 1;
 614         }
 615
 616         width = get_unaligned_le32(&bmp->header.width);
 617         height = get_unaligned_le32(&bmp->header.height);
 618         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 619
 620         colors = 1 << bmp_bpix;
 621
 622         bpix = NBITS(panel_info.vl_bpix);
 623
 624         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 625                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 626                         bpix, bmp_bpix);
 627
 628                 return 1;
 629         }
 630
 631         /*
 632          * We support displaying 8bpp BMPs on 16bpp LCDs
 633          * and displaying 24bpp BMPs on 32bpp LCDs
 634          * */
 635         if (bpix != bmp_bpix &&
 636             !(bmp_bpix == 8 && bpix == 16) &&
 637             !(bmp_bpix == 24 && bpix == 32)) {
 638                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 639                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 640                 return 1;
 641         }
 642
 643         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 644                 width, height, colors);
 645
 646         if (bmp_bpix == 8)
 647                 lcd_set_cmap(bmp, colors);
 648
 649         padded_width = ALIGN(width, 4);
 650
 651 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 652         splash_align_axis(&x, pwidth, width);
 653         splash_align_axis(&y, panel_info.vl_row, height);
 654 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 655         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 656
 657         if ((x + width) > pwidth)
 658                 width = pwidth - x;
 659         if ((y + height) > panel_info.vl_row) {
 660                 height = panel_info.vl_row - y;
 661                 bmap += (panel_info.vl_row - y) * padded_width;
 662         }
 663
 664         fb   = (uchar *)(lcd_base +
 665                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 666
 667         switch (bmp_bpix) {
 668         case 1:
 669         case 8: {
 670                 cmap_base = configuration_get_cmap();
 671 #ifdef CONFIG_LCD_BMP_RLE8
 672                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 673                 if (compression == BMP_BI_RLE8) {
 674                         if (bpix != 16) {
 675                                 /* TODO implement render code for bpix != 16 */
 676                                 printf("Error: only support 16 bpix");
 677                                 return 1;
 678                         }
 679                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 680                         break;
 681                 }
 682 #endif
 683
 684                 for (i = 0; i < height; ++i) {
 685                         WATCHDOG_RESET();
 686                         for (j = 0; j < width; j++) {
 687                                 if (bpix == 32) {
 688                                         int i = *bmap++;
 689
 690                                         fb[3] = 0; /* T */
 691                                         fb[0] = cte[i].blue;
 692                                         fb[1] = cte[i].green;
 693                                         fb[2] = cte[i].red;
 694                                         fb += sizeof(uint32_t) / sizeof(*fb);
 695                                 } else if (bpix == 16) {
 696                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 697                                         fb += sizeof(uint16_t) / sizeof(*fb);
 698                                 } else {
 699                                         FB_PUT_BYTE(fb, bmap);
 700                                 }
 701                         }
 702                         if (bpix > 8) {
 703                                 bmap += padded_width - width;
 704                                 fb   -= width * bpix / 8 + lcd_line_length;
 705                         } else {
 706                                 bmap += padded_width;
 707                                 fb -= lcd_line_length;
 708                         }
 709                 }
 710                 break;
 711         }
 712 #if defined(CONFIG_BMP_16BPP)
 713         case 16:
 714                 for (i = 0; i < height; ++i) {
 715                         WATCHDOG_RESET();
 716                         for (j = 0; j < width; j++)
 717                                 fb_put_word(&fb, &bmap);
 718
 719                         bmap += (padded_width - width) * 2;
 720                         fb -= width * 2 + lcd_line_length;
 721                 }
 722                 break;
 723 #endif /* CONFIG_BMP_16BPP */
 724 #if defined(CONFIG_BMP_24BMP)
 725         case 24:
 726                 for (i = 0; i < height; ++i) {
 727                         for (j = 0; j < width; j++) {
 728                                 *(fb++) = *(bmap++);
 729                                 *(fb++) = *(bmap++);
 730                                 *(fb++) = *(bmap++);
 731                                 *(fb++) = 0;
 732                         }
 733                         fb -= lcd_line_length + width * (bpix / 8);
 734                 }
 735                 break;
 736 #endif /* CONFIG_BMP_24BPP */
 737 #if defined(CONFIG_BMP_32BPP)
 738         case 32:
 739                 for (i = 0; i < height; ++i) {
 740                         WATCHDOG_RESET();
 741                         for (j = 0; j < width; j++) {
 742                                 fb[3] = *bmap++; /* T */
 743                                 fb[0] = *bmap++; /* B */
 744                                 fb[1] = *bmap++; /* G */
 745                                 fb[2] = *bmap++; /* R */
 746                                 fb += 4;
 747                         }
 748                         bmap += (padded_width - width) * 4;
 749                         fb -= lcd_line_length + width * (bpix / 8);
 750                 }
 751                 break;
 752 #endif /* CONFIG_BMP_32BPP */
 753         };
 754
 755         lcd_sync();
 756         return 0;
 757 }
 758 #endif
 759
 760 static void lcd_logo(void)
 761 {
 762         lcd_logo_plot(0, 0);
 763
 764 #ifdef CONFIG_LCD_INFO
 765         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 766         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 767         lcd_show_board_info();
 768 #endif /* CONFIG_LCD_INFO */
 769 }
 770
 771 #ifdef CONFIG_SPLASHIMAGE_GUARD
 772 static int on_splashimage(const char *name, const char *value, enum env_op op,
 773         int flags)
 774 {
 775         ulong addr;
 776         int aligned;
 777
 778         if (op == env_op_delete)
 779                 return 0;
 780
 781         addr = simple_strtoul(value, NULL, 16);
 782         /* See README.displaying-bmps */
 783         aligned = (addr % 4 == 2);
 784         if (!aligned) {
 785                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 786                 return -1;
 787         }
 788
 789         return 0;
 790 }
 791
 792 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 793 #endif
 794
 795 int lcd_get_pixel_width(void)
 796 {
 797         return panel_info.vl_col;
 798 }
 799
 800 int lcd_get_pixel_height(void)
 801 {
 802         return panel_info.vl_row;
 803 }