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 #ifdef CONFIG_SANDBOX
  35 #include <asm/sdl.h>
  36 #endif
  37
  38 #ifndef CONFIG_LCD_ALIGNMENT
  39 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  40 #endif
  41
  42 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  43         (LCD_BPP != LCD_COLOR32)
  44 #error Unsupported LCD BPP.
  45 #endif
  46
  47 DECLARE_GLOBAL_DATA_PTR;
  48
  49 static int lcd_init(void *lcdbase);
  50 static void lcd_logo(void);
  51 static void lcd_setfgcolor(int color);
  52 static void lcd_setbgcolor(int color);
  53
  54 static int lcd_color_fg;
  55 static int lcd_color_bg;
  56 int lcd_line_length;
  57 char lcd_is_enabled = 0;
  58 static void *lcd_base;                  /* Start of framebuffer memory  */
  59 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  60
  61 /* Flush LCD activity to the caches */
  62 void lcd_sync(void)
  63 {
  64         /*
  65          * flush_dcache_range() is declared in common.h but it seems that some
  66          * architectures do not actually implement it. Is there a way to find
  67          * out whether it exists? For now, ARM is safe.
  68          */
  69 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  70         int line_length;
  71
  72         if (lcd_flush_dcache)
  73                 flush_dcache_range((u32)lcd_base,
  74                         (u32)(lcd_base + lcd_get_size(&line_length)));
  75 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
  76         static ulong last_sync;
  77
  78         if (get_timer(last_sync) > 10) {
  79                 sandbox_sdl_sync(lcd_base);
  80                 last_sync = get_timer(0);
  81         }
  82 #endif
  83 }
  84
  85 void lcd_set_flush_dcache(int flush)
  86 {
  87         lcd_flush_dcache = (flush != 0);
  88 }
  89
  90 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  91 {
  92         lcd_putc(c);
  93 }
  94
  95 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  96 {
  97         lcd_puts(s);
  98 }
  99
 100 /* Small utility to check that you got the colours right */
 101 #ifdef LCD_TEST_PATTERN
 102
 103 #define N_BLK_VERT      2
 104 #define N_BLK_HOR       3
 105
 106 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 107         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 108         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 109 };
 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         uchar *pix = (uchar *)lcd_base;
 119
 120         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 121                 h_max, v_max, h_step, v_step);
 122
 123         /* WARNING: Code silently assumes 8bit/pixel */
 124         for (v = 0; v < v_max; ++v) {
 125                 uchar iy = v / v_step;
 126                 for (h = 0; h < h_max; ++h) {
 127                         uchar ix = N_BLK_HOR * iy + h / h_step;
 128                         *pix++ = test_colors[ix];
 129                 }
 130         }
 131 }
 132 #endif /* LCD_TEST_PATTERN */
 133
 134 /*
 135  * With most lcd drivers the line length is set up
 136  * by calculating it from panel_info parameters. Some
 137  * drivers need to calculate the line length differently,
 138  * so make the function weak to allow overriding it.
 139  */
 140 __weak int lcd_get_size(int *line_length)
 141 {
 142         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 143         return *line_length * panel_info.vl_row;
 144 }
 145
 146 int drv_lcd_init(void)
 147 {
 148         struct stdio_dev lcddev;
 149         int rc;
 150
 151         lcd_base = map_sysmem(gd->fb_base, 0);
 152
 153         lcd_init(lcd_base);
 154
 155         /* Device initialization */
 156         memset(&lcddev, 0, sizeof(lcddev));
 157
 158         strcpy(lcddev.name, "lcd");
 159         lcddev.ext   = 0;                       /* No extensions */
 160         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 161         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 162         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 163
 164         rc = stdio_register(&lcddev);
 165
 166         return (rc == 0) ? 1 : rc;
 167 }
 168
 169 void lcd_clear(void)
 170 {
 171         int bg_color;
 172         char *s;
 173         ulong addr;
 174         static int do_splash = 1;
 175 #if LCD_BPP == LCD_COLOR8
 176         /* Setting the palette */
 177         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 178         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 179         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 180         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 181         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 182         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 183         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 184         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 185         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 186 #endif
 187
 188 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 189         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 190         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 191         bg_color = CONSOLE_COLOR_WHITE;
 192 #else
 193         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 194         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 195         bg_color = CONSOLE_COLOR_BLACK;
 196 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 197
 198 #ifdef  LCD_TEST_PATTERN
 199         test_pattern();
 200 #else
 201         /* set framebuffer to background color */
 202 #if (LCD_BPP != LCD_COLOR32)
 203         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 204 #else
 205         u32 *ppix = lcd_base;
 206         u32 i;
 207         for (i = 0;
 208            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 209            i++) {
 210                 *ppix++ = bg_color;
 211         }
 212 #endif
 213 #endif
 214         /* setup text-console */
 215         debug("[LCD] setting up console...\n");
 216         lcd_init_console(lcd_base,
 217                          panel_info.vl_col,
 218                          panel_info.vl_row,
 219                          panel_info.vl_rot);
 220         /* Paint the logo and retrieve LCD base address */
 221         debug("[LCD] Drawing the logo...\n");
 222         if (do_splash) {
 223                 s = getenv("splashimage");
 224                 if (s) {
 225                         do_splash = 0;
 226                         addr = simple_strtoul(s, NULL, 16);
 227                         if (lcd_splash(addr) == 0) {
 228                                 lcd_sync();
 229                                 return;
 230                         }
 231                 }
 232         }
 233
 234         lcd_logo();
 235 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 236         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 237         lcd_init_console((void *)addr, panel_info.vl_row,
 238                          panel_info.vl_col, panel_info.vl_rot);
 239 #endif
 240         lcd_sync();
 241 }
 242
 243 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 244                         char *const argv[])
 245 {
 246         lcd_clear();
 247         return 0;
 248 }
 249 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 250
 251 static int lcd_init(void *lcdbase)
 252 {
 253         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 254         lcd_ctrl_init(lcdbase);
 255
 256         /*
 257          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 258          * the 'lcdbase' argument and uses custom lcd base address
 259          * by setting up gd->fb_base. Check for this condition and fixup
 260          * 'lcd_base' address.
 261          */
 262         if (map_to_sysmem(lcdbase) != gd->fb_base)
 263                 lcd_base = map_sysmem(gd->fb_base, 0);
 264
 265         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 266
 267         lcd_get_size(&lcd_line_length);
 268         lcd_is_enabled = 1;
 269         lcd_clear();
 270         lcd_enable();
 271
 272         /* Initialize the console */
 273         lcd_set_col(0);
 274 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 275         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 276 #else
 277         lcd_set_row(1); /* leave 1 blank line below logo */
 278 #endif
 279
 280         return 0;
 281 }
 282
 283 /*
 284  * This is called early in the system initialization to grab memory
 285  * for the LCD controller.
 286  * Returns new address for monitor, after reserving LCD buffer memory
 287  *
 288  * Note that this is running from ROM, so no write access to global data.
 289  */
 290 ulong lcd_setmem(ulong addr)
 291 {
 292         ulong size;
 293         int line_length;
 294
 295         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 296                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 297
 298         size = lcd_get_size(&line_length);
 299
 300         /* Round up to nearest full page, or MMU section if defined */
 301         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 302         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 303
 304         /* Allocate pages for the frame buffer. */
 305         addr -= size;
 306
 307         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 308               size >> 10, addr);
 309
 310         return addr;
 311 }
 312
 313 static void lcd_setfgcolor(int color)
 314 {
 315         lcd_color_fg = color;
 316 }
 317
 318 int lcd_getfgcolor(void)
 319 {
 320         return lcd_color_fg;
 321 }
 322
 323 static void lcd_setbgcolor(int color)
 324 {
 325         lcd_color_bg = color;
 326 }
 327
 328 int lcd_getbgcolor(void)
 329 {
 330         return lcd_color_bg;
 331 }
 332
 333 #ifdef CONFIG_LCD_LOGO
 334 __weak void lcd_logo_set_cmap(void)
 335 {
 336         int i;
 337         ushort *cmap = configuration_get_cmap();
 338
 339         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 340                 *cmap++ = bmp_logo_palette[i];
 341 }
 342
 343 void lcd_logo_plot(int x, int y)
 344 {
 345         ushort i, j;
 346         uchar *bmap = &bmp_logo_bitmap[0];
 347         unsigned bpix = NBITS(panel_info.vl_bpix);
 348         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 349         ushort *fb16;
 350
 351         debug("Logo: width %d  height %d  colors %d\n",
 352               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 353
 354         if (bpix < 12) {
 355                 WATCHDOG_RESET();
 356                 lcd_logo_set_cmap();
 357                 WATCHDOG_RESET();
 358
 359                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 360                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 361                         bmap += BMP_LOGO_WIDTH;
 362                         fb += panel_info.vl_col;
 363                 }
 364         }
 365         else { /* true color mode */
 366                 u16 col16;
 367                 fb16 = (ushort *)fb;
 368                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 369                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 370                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 371                                 fb16[j] =
 372                                         ((col16 & 0x000F) << 1) |
 373                                         ((col16 & 0x00F0) << 3) |
 374                                         ((col16 & 0x0F00) << 4);
 375                                 }
 376                         bmap += BMP_LOGO_WIDTH;
 377                         fb16 += panel_info.vl_col;
 378                 }
 379         }
 380
 381         WATCHDOG_RESET();
 382         lcd_sync();
 383 }
 384 #else
 385 static inline void lcd_logo_plot(int x, int y) {}
 386 #endif /* CONFIG_LCD_LOGO */
 387
 388 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 389 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 390 #define BMP_ALIGN_CENTER        0x7FFF
 391
 392 static void splash_align_axis(int *axis, unsigned long panel_size,
 393                                         unsigned long picture_size)
 394 {
 395         unsigned long panel_picture_delta = panel_size - picture_size;
 396         unsigned long axis_alignment;
 397
 398         if (*axis == BMP_ALIGN_CENTER)
 399                 axis_alignment = panel_picture_delta / 2;
 400         else if (*axis < 0)
 401                 axis_alignment = panel_picture_delta + *axis + 1;
 402         else
 403                 return;
 404
 405         *axis = max(0, (int)axis_alignment);
 406 }
 407 #endif
 408
 409 #ifdef CONFIG_LCD_BMP_RLE8
 410 #define BMP_RLE8_ESCAPE         0
 411 #define BMP_RLE8_EOL            0
 412 #define BMP_RLE8_EOBMP          1
 413 #define BMP_RLE8_DELTA          2
 414
 415 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 416                                   int cnt)
 417 {
 418         while (cnt > 0) {
 419                 *(*fbp)++ = cmap[*bmap++];
 420                 cnt--;
 421         }
 422 }
 423
 424 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 425 {
 426         ushort *fb = *fbp;
 427         int cnt_8copy = cnt >> 3;
 428
 429         cnt -= cnt_8copy << 3;
 430         while (cnt_8copy > 0) {
 431                 *fb++ = c;
 432                 *fb++ = c;
 433                 *fb++ = c;
 434                 *fb++ = c;
 435                 *fb++ = c;
 436                 *fb++ = c;
 437                 *fb++ = c;
 438                 *fb++ = c;
 439                 cnt_8copy--;
 440         }
 441         while (cnt > 0) {
 442                 *fb++ = c;
 443                 cnt--;
 444         }
 445         *fbp = fb;
 446 }
 447
 448 /*
 449  * Do not call this function directly, must be called from lcd_display_bitmap.
 450  */
 451 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 452                                     uchar *fb, int x_off, int y_off)
 453 {
 454         uchar *bmap;
 455         ulong width, height;
 456         ulong cnt, runlen;
 457         int x, y;
 458         int decode = 1;
 459
 460         width = get_unaligned_le32(&bmp->header.width);
 461         height = get_unaligned_le32(&bmp->header.height);
 462         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 463
 464         x = 0;
 465         y = height - 1;
 466
 467         while (decode) {
 468                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 469                         switch (bmap[1]) {
 470                         case BMP_RLE8_EOL:
 471                                 /* end of line */
 472                                 bmap += 2;
 473                                 x = 0;
 474                                 y--;
 475                                 /* 16bpix, 2-byte per pixel, width should *2 */
 476                                 fb -= (width * 2 + lcd_line_length);
 477                                 break;
 478                         case BMP_RLE8_EOBMP:
 479                                 /* end of bitmap */
 480                                 decode = 0;
 481                                 break;
 482                         case BMP_RLE8_DELTA:
 483                                 /* delta run */
 484                                 x += bmap[2];
 485                                 y -= bmap[3];
 486                                 /* 16bpix, 2-byte per pixel, x should *2 */
 487                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 488                                         * lcd_line_length + (x + x_off) * 2);
 489                                 bmap += 4;
 490                                 break;
 491                         default:
 492                                 /* unencoded run */
 493                                 runlen = bmap[1];
 494                                 bmap += 2;
 495                                 if (y < height) {
 496                                         if (x < width) {
 497                                                 if (x + runlen > width)
 498                                                         cnt = width - x;
 499                                                 else
 500                                                         cnt = runlen;
 501                                                 draw_unencoded_bitmap(
 502                                                         (ushort **)&fb,
 503                                                         bmap, cmap, cnt);
 504                                         }
 505                                         x += runlen;
 506                                 }
 507                                 bmap += runlen;
 508                                 if (runlen & 1)
 509                                         bmap++;
 510                         }
 511                 } else {
 512                         /* encoded run */
 513                         if (y < height) {
 514                                 runlen = bmap[0];
 515                                 if (x < width) {
 516                                         /* aggregate the same code */
 517                                         while (bmap[0] == 0xff &&
 518                                                bmap[2] != BMP_RLE8_ESCAPE &&
 519                                                bmap[1] == bmap[3]) {
 520                                                 runlen += bmap[2];
 521                                                 bmap += 2;
 522                                         }
 523                                         if (x + runlen > width)
 524                                                 cnt = width - x;
 525                                         else
 526                                                 cnt = runlen;
 527                                         draw_encoded_bitmap((ushort **)&fb,
 528                                                 cmap[bmap[1]], cnt);
 529                                 }
 530                                 x += runlen;
 531                         }
 532                         bmap += 2;
 533                 }
 534         }
 535 }
 536 #endif
 537
 538 __weak void fb_put_byte(uchar **fb, uchar **from)
 539 {
 540         *(*fb)++ = *(*from)++;
 541 }
 542
 543 #if defined(CONFIG_BMP_16BPP)
 544 __weak void fb_put_word(uchar **fb, uchar **from)
 545 {
 546         *(*fb)++ = *(*from)++;
 547         *(*fb)++ = *(*from)++;
 548 }
 549 #endif /* CONFIG_BMP_16BPP */
 550
 551 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 552 {
 553         int i;
 554         struct bmp_color_table_entry cte;
 555         ushort *cmap = configuration_get_cmap();
 556
 557         for (i = 0; i < colors; ++i) {
 558                 cte = bmp->color_table[i];
 559                 *cmap = (((cte.red)   << 8) & 0xf800) |
 560                         (((cte.green) << 3) & 0x07e0) |
 561                         (((cte.blue)  >> 3) & 0x001f);
 562 #if defined(CONFIG_MPC823)
 563                 cmap--;
 564 #else
 565                 cmap++;
 566 #endif
 567         }
 568 }
 569
 570 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 571 {
 572         ushort *cmap_base = NULL;
 573         ushort i, j;
 574         uchar *fb;
 575         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 576         uchar *bmap;
 577         ushort padded_width;
 578         unsigned long width, height, byte_width;
 579         unsigned long pwidth = panel_info.vl_col;
 580         unsigned colors, bpix, bmp_bpix;
 581         int hdr_size;
 582         struct bmp_color_table_entry *palette = bmp->color_table;
 583
 584         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 585                 bmp->header.signature[1] == 'M')) {
 586                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 587
 588                 return 1;
 589         }
 590
 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_24BMP)
 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_24BMP */
 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 }