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         char *s;
 175         ulong addr;
 176         static int do_splash = 1;
 177 #if LCD_BPP == LCD_COLOR8
 178         /* Setting the palette */
 179         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 180         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 181         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 182         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 183         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 184         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 185         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 186         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 187         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 188 #endif
 189
 190 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 191         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 192         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 193         bg_color = CONSOLE_COLOR_WHITE;
 194 #else
 195         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 196         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 197         bg_color = CONSOLE_COLOR_BLACK;
 198 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 199
 200 #ifdef  LCD_TEST_PATTERN
 201         test_pattern();
 202 #else
 203         /* set framebuffer to background color */
 204 #if (LCD_BPP != LCD_COLOR32)
 205         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 206 #else
 207         u32 *ppix = lcd_base;
 208         u32 i;
 209         for (i = 0;
 210            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 211            i++) {
 212                 *ppix++ = bg_color;
 213         }
 214 #endif
 215 #endif
 216         /* setup text-console */
 217         debug("[LCD] setting up console...\n");
 218         lcd_init_console(lcd_base,
 219                          panel_info.vl_col,
 220                          panel_info.vl_row,
 221                          panel_info.vl_rot);
 222         /* Paint the logo and retrieve LCD base address */
 223         debug("[LCD] Drawing the logo...\n");
 224         if (do_splash) {
 225                 s = env_get("splashimage");
 226                 if (s) {
 227                         do_splash = 0;
 228                         addr = simple_strtoul(s, NULL, 16);
 229                         if (lcd_splash(addr) == 0) {
 230                                 lcd_sync();
 231                                 return;
 232                         }
 233                 }
 234         }
 235
 236         lcd_logo();
 237 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 238         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 239         lcd_init_console((void *)addr, panel_info.vl_col,
 240                          panel_info.vl_row, panel_info.vl_rot);
 241 #endif
 242         lcd_sync();
 243 }
 244
 245 static int lcd_init(void *lcdbase)
 246 {
 247         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 248         lcd_ctrl_init(lcdbase);
 249
 250         /*
 251          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 252          * the 'lcdbase' argument and uses custom lcd base address
 253          * by setting up gd->fb_base. Check for this condition and fixup
 254          * 'lcd_base' address.
 255          */
 256         if (map_to_sysmem(lcdbase) != gd->fb_base)
 257                 lcd_base = map_sysmem(gd->fb_base, 0);
 258
 259         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 260
 261         lcd_get_size(&lcd_line_length);
 262         lcd_is_enabled = 1;
 263         lcd_clear();
 264         lcd_enable();
 265
 266         /* Initialize the console */
 267         lcd_set_col(0);
 268 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 269         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 270 #else
 271         lcd_set_row(1); /* leave 1 blank line below logo */
 272 #endif
 273
 274         return 0;
 275 }
 276
 277 /*
 278  * This is called early in the system initialization to grab memory
 279  * for the LCD controller.
 280  * Returns new address for monitor, after reserving LCD buffer memory
 281  *
 282  * Note that this is running from ROM, so no write access to global data.
 283  */
 284 ulong lcd_setmem(ulong addr)
 285 {
 286         ulong size;
 287         int line_length;
 288
 289         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 290                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 291
 292         size = lcd_get_size(&line_length);
 293
 294         /* Round up to nearest full page, or MMU section if defined */
 295         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 296         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 297
 298         /* Allocate pages for the frame buffer. */
 299         addr -= size;
 300
 301         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 302               size >> 10, addr);
 303
 304         return addr;
 305 }
 306
 307 static void lcd_setfgcolor(int color)
 308 {
 309         lcd_color_fg = color;
 310 }
 311
 312 int lcd_getfgcolor(void)
 313 {
 314         return lcd_color_fg;
 315 }
 316
 317 static void lcd_setbgcolor(int color)
 318 {
 319         lcd_color_bg = color;
 320 }
 321
 322 int lcd_getbgcolor(void)
 323 {
 324         return lcd_color_bg;
 325 }
 326
 327 #ifdef CONFIG_LCD_LOGO
 328 __weak void lcd_logo_set_cmap(void)
 329 {
 330         int i;
 331         ushort *cmap = configuration_get_cmap();
 332
 333         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 334                 *cmap++ = bmp_logo_palette[i];
 335 }
 336
 337 void lcd_logo_plot(int x, int y)
 338 {
 339         ushort i, j;
 340         uchar *bmap = &bmp_logo_bitmap[0];
 341         unsigned bpix = NBITS(panel_info.vl_bpix);
 342         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 343         ushort *fb16;
 344
 345         debug("Logo: width %d  height %d  colors %d\n",
 346               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 347
 348         if (bpix < 12) {
 349                 WATCHDOG_RESET();
 350                 lcd_logo_set_cmap();
 351                 WATCHDOG_RESET();
 352
 353                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 354                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 355                         bmap += BMP_LOGO_WIDTH;
 356                         fb += panel_info.vl_col;
 357                 }
 358         }
 359         else { /* true color mode */
 360                 u16 col16;
 361                 fb16 = (ushort *)fb;
 362                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 363                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 364                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 365                                 fb16[j] =
 366                                         ((col16 & 0x000F) << 1) |
 367                                         ((col16 & 0x00F0) << 3) |
 368                                         ((col16 & 0x0F00) << 4);
 369                                 }
 370                         bmap += BMP_LOGO_WIDTH;
 371                         fb16 += panel_info.vl_col;
 372                 }
 373         }
 374
 375         WATCHDOG_RESET();
 376         lcd_sync();
 377 }
 378 #else
 379 static inline void lcd_logo_plot(int x, int y) {}
 380 #endif /* CONFIG_LCD_LOGO */
 381
 382 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 383 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 384
 385 static void splash_align_axis(int *axis, unsigned long panel_size,
 386                                         unsigned long picture_size)
 387 {
 388         unsigned long panel_picture_delta = panel_size - picture_size;
 389         unsigned long axis_alignment;
 390
 391         if (*axis == BMP_ALIGN_CENTER)
 392                 axis_alignment = panel_picture_delta / 2;
 393         else if (*axis < 0)
 394                 axis_alignment = panel_picture_delta + *axis + 1;
 395         else
 396                 return;
 397
 398         *axis = max(0, (int)axis_alignment);
 399 }
 400 #endif
 401
 402 #ifdef CONFIG_LCD_BMP_RLE8
 403 #define BMP_RLE8_ESCAPE         0
 404 #define BMP_RLE8_EOL            0
 405 #define BMP_RLE8_EOBMP          1
 406 #define BMP_RLE8_DELTA          2
 407
 408 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 409                                   int cnt)
 410 {
 411         while (cnt > 0) {
 412                 *(*fbp)++ = cmap[*bmap++];
 413                 cnt--;
 414         }
 415 }
 416
 417 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 418 {
 419         ushort *fb = *fbp;
 420         int cnt_8copy = cnt >> 3;
 421
 422         cnt -= cnt_8copy << 3;
 423         while (cnt_8copy > 0) {
 424                 *fb++ = c;
 425                 *fb++ = c;
 426                 *fb++ = c;
 427                 *fb++ = c;
 428                 *fb++ = c;
 429                 *fb++ = c;
 430                 *fb++ = c;
 431                 *fb++ = c;
 432                 cnt_8copy--;
 433         }
 434         while (cnt > 0) {
 435                 *fb++ = c;
 436                 cnt--;
 437         }
 438         *fbp = fb;
 439 }
 440
 441 /*
 442  * Do not call this function directly, must be called from lcd_display_bitmap.
 443  */
 444 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 445                                     uchar *fb, int x_off, int y_off)
 446 {
 447         uchar *bmap;
 448         ulong width, height;
 449         ulong cnt, runlen;
 450         int x, y;
 451         int decode = 1;
 452
 453         width = get_unaligned_le32(&bmp->header.width);
 454         height = get_unaligned_le32(&bmp->header.height);
 455         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 456
 457         x = 0;
 458         y = height - 1;
 459
 460         while (decode) {
 461                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 462                         switch (bmap[1]) {
 463                         case BMP_RLE8_EOL:
 464                                 /* end of line */
 465                                 bmap += 2;
 466                                 x = 0;
 467                                 y--;
 468                                 /* 16bpix, 2-byte per pixel, width should *2 */
 469                                 fb -= (width * 2 + lcd_line_length);
 470                                 break;
 471                         case BMP_RLE8_EOBMP:
 472                                 /* end of bitmap */
 473                                 decode = 0;
 474                                 break;
 475                         case BMP_RLE8_DELTA:
 476                                 /* delta run */
 477                                 x += bmap[2];
 478                                 y -= bmap[3];
 479                                 /* 16bpix, 2-byte per pixel, x should *2 */
 480                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 481                                         * lcd_line_length + (x + x_off) * 2);
 482                                 bmap += 4;
 483                                 break;
 484                         default:
 485                                 /* unencoded run */
 486                                 runlen = bmap[1];
 487                                 bmap += 2;
 488                                 if (y < height) {
 489                                         if (x < width) {
 490                                                 if (x + runlen > width)
 491                                                         cnt = width - x;
 492                                                 else
 493                                                         cnt = runlen;
 494                                                 draw_unencoded_bitmap(
 495                                                         (ushort **)&fb,
 496                                                         bmap, cmap, cnt);
 497                                         }
 498                                         x += runlen;
 499                                 }
 500                                 bmap += runlen;
 501                                 if (runlen & 1)
 502                                         bmap++;
 503                         }
 504                 } else {
 505                         /* encoded run */
 506                         if (y < height) {
 507                                 runlen = bmap[0];
 508                                 if (x < width) {
 509                                         /* aggregate the same code */
 510                                         while (bmap[0] == 0xff &&
 511                                                bmap[2] != BMP_RLE8_ESCAPE &&
 512                                                bmap[1] == bmap[3]) {
 513                                                 runlen += bmap[2];
 514                                                 bmap += 2;
 515                                         }
 516                                         if (x + runlen > width)
 517                                                 cnt = width - x;
 518                                         else
 519                                                 cnt = runlen;
 520                                         draw_encoded_bitmap((ushort **)&fb,
 521                                                 cmap[bmap[1]], cnt);
 522                                 }
 523                                 x += runlen;
 524                         }
 525                         bmap += 2;
 526                 }
 527         }
 528 }
 529 #endif
 530
 531 __weak void fb_put_byte(uchar **fb, uchar **from)
 532 {
 533         *(*fb)++ = *(*from)++;
 534 }
 535
 536 #if defined(CONFIG_BMP_16BPP)
 537 __weak void fb_put_word(uchar **fb, uchar **from)
 538 {
 539         *(*fb)++ = *(*from)++;
 540         *(*fb)++ = *(*from)++;
 541 }
 542 #endif /* CONFIG_BMP_16BPP */
 543
 544 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 545 {
 546         int i;
 547         struct bmp_color_table_entry cte;
 548         ushort *cmap = configuration_get_cmap();
 549
 550         for (i = 0; i < colors; ++i) {
 551                 cte = bmp->color_table[i];
 552                 *cmap = (((cte.red)   << 8) & 0xf800) |
 553                         (((cte.green) << 3) & 0x07e0) |
 554                         (((cte.blue)  >> 3) & 0x001f);
 555                 cmap++;
 556         }
 557 }
 558
 559 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 560 {
 561         ushort *cmap_base = NULL;
 562         ushort i, j;
 563         uchar *fb;
 564         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 565         uchar *bmap;
 566         ushort padded_width;
 567         unsigned long width, height, byte_width;
 568         unsigned long pwidth = panel_info.vl_col;
 569         unsigned colors, bpix, bmp_bpix;
 570         int hdr_size;
 571         struct bmp_color_table_entry *palette;
 572
 573         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 574                 bmp->header.signature[1] == 'M')) {
 575                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 576
 577                 return 1;
 578         }
 579
 580         palette = bmp->color_table;
 581         width = get_unaligned_le32(&bmp->header.width);
 582         height = get_unaligned_le32(&bmp->header.height);
 583         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 584         hdr_size = get_unaligned_le16(&bmp->header.size);
 585         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 586
 587         colors = 1 << bmp_bpix;
 588
 589         bpix = NBITS(panel_info.vl_bpix);
 590
 591         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 592                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 593                         bpix, bmp_bpix);
 594
 595                 return 1;
 596         }
 597
 598         /*
 599          * We support displaying 8bpp BMPs on 16bpp LCDs
 600          * and displaying 24bpp BMPs on 32bpp LCDs
 601          * */
 602         if (bpix != bmp_bpix &&
 603             !(bmp_bpix == 8 && bpix == 16) &&
 604             !(bmp_bpix == 24 && bpix == 32)) {
 605                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 606                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 607                 return 1;
 608         }
 609
 610         debug("Display-bmp: %d x %d  with %d colors, display %d\n",
 611               (int)width, (int)height, (int)colors, 1 << bpix);
 612
 613         if (bmp_bpix == 8)
 614                 lcd_set_cmap(bmp, colors);
 615
 616         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 617
 618 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 619         splash_align_axis(&x, pwidth, width);
 620         splash_align_axis(&y, panel_info.vl_row, height);
 621 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 622
 623         if ((x + width) > pwidth)
 624                 width = pwidth - x;
 625         if ((y + height) > panel_info.vl_row)
 626                 height = panel_info.vl_row - y;
 627
 628         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 629         fb   = (uchar *)(lcd_base +
 630                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 631
 632         switch (bmp_bpix) {
 633         case 1:
 634         case 8: {
 635                 cmap_base = configuration_get_cmap();
 636 #ifdef CONFIG_LCD_BMP_RLE8
 637                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 638                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 639                 if (compression == BMP_BI_RLE8) {
 640                         if (bpix != 16) {
 641                                 /* TODO implement render code for bpix != 16 */
 642                                 printf("Error: only support 16 bpix");
 643                                 return 1;
 644                         }
 645                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 646                         break;
 647                 }
 648 #endif
 649
 650                 if (bpix != 16)
 651                         byte_width = width;
 652                 else
 653                         byte_width = width * 2;
 654
 655                 for (i = 0; i < height; ++i) {
 656                         WATCHDOG_RESET();
 657                         for (j = 0; j < width; j++) {
 658                                 if (bpix != 16) {
 659                                         fb_put_byte(&fb, &bmap);
 660                                 } else {
 661                                         struct bmp_color_table_entry *entry;
 662                                         uint val;
 663
 664                                         if (cmap_base) {
 665                                                 val = cmap_base[*bmap];
 666                                         } else {
 667                                                 entry = &palette[*bmap];
 668                                                 val = entry->blue >> 3 |
 669                                                         entry->green >> 2 << 5 |
 670                                                         entry->red >> 3 << 11;
 671                                         }
 672                                         *(uint16_t *)fb = val;
 673                                         bmap++;
 674                                         fb += sizeof(uint16_t) / sizeof(*fb);
 675                                 }
 676                         }
 677                         bmap += (padded_width - width);
 678                         fb -= byte_width + lcd_line_length;
 679                 }
 680                 break;
 681         }
 682 #if defined(CONFIG_BMP_16BPP)
 683         case 16:
 684                 for (i = 0; i < height; ++i) {
 685                         WATCHDOG_RESET();
 686                         for (j = 0; j < width; j++)
 687                                 fb_put_word(&fb, &bmap);
 688
 689                         bmap += (padded_width - width) * 2;
 690                         fb -= width * 2 + lcd_line_length;
 691                 }
 692                 break;
 693 #endif /* CONFIG_BMP_16BPP */
 694 #if defined(CONFIG_BMP_24BPP)
 695         case 24:
 696                 for (i = 0; i < height; ++i) {
 697                         for (j = 0; j < width; j++) {
 698                                 *(fb++) = *(bmap++);
 699                                 *(fb++) = *(bmap++);
 700                                 *(fb++) = *(bmap++);
 701                                 *(fb++) = 0;
 702                         }
 703                         fb -= lcd_line_length + width * (bpix / 8);
 704                 }
 705                 break;
 706 #endif /* CONFIG_BMP_24BPP */
 707 #if defined(CONFIG_BMP_32BPP)
 708         case 32:
 709                 for (i = 0; i < height; ++i) {
 710                         for (j = 0; j < width; j++) {
 711                                 *(fb++) = *(bmap++);
 712                                 *(fb++) = *(bmap++);
 713                                 *(fb++) = *(bmap++);
 714                                 *(fb++) = *(bmap++);
 715                         }
 716                         fb -= lcd_line_length + width * (bpix / 8);
 717                 }
 718                 break;
 719 #endif /* CONFIG_BMP_32BPP */
 720         default:
 721                 break;
 722         };
 723
 724         lcd_sync();
 725         return 0;
 726 }
 727 #endif
 728
 729 static void lcd_logo(void)
 730 {
 731         lcd_logo_plot(0, 0);
 732
 733 #ifdef CONFIG_LCD_INFO
 734         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 735         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 736         lcd_show_board_info();
 737 #endif /* CONFIG_LCD_INFO */
 738 }
 739
 740 #ifdef CONFIG_SPLASHIMAGE_GUARD
 741 static int on_splashimage(const char *name, const char *value, enum env_op op,
 742         int flags)
 743 {
 744         ulong addr;
 745         int aligned;
 746
 747         if (op == env_op_delete)
 748                 return 0;
 749
 750         addr = simple_strtoul(value, NULL, 16);
 751         /* See README.displaying-bmps */
 752         aligned = (addr % 4 == 2);
 753         if (!aligned) {
 754                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 755                 return -1;
 756         }
 757
 758         return 0;
 759 }
 760
 761 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 762 #endif
 763
 764 int lcd_get_pixel_width(void)
 765 {
 766         return panel_info.vl_col;
 767 }
 768
 769 int lcd_get_pixel_height(void)
 770 {
 771         return panel_info.vl_row;
 772 }