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         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         /* Paint the logo and retrieve LCD base address */
 215         debug("[LCD] Drawing the logo...\n");
 216 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 217         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 218         console_rows /= VIDEO_FONT_HEIGHT;
 219 #else
 220         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 221 #endif
 222         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 223         lcd_init_console(lcd_base, console_rows, console_cols);
 224         if (do_splash) {
 225                 s = getenv("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, console_rows, console_cols);
 240 #endif
 241         lcd_sync();
 242 }
 243
 244 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 245                         char *const argv[])
 246 {
 247         lcd_clear();
 248         return 0;
 249 }
 250 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 251
 252 static int lcd_init(void *lcdbase)
 253 {
 254         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 255         lcd_ctrl_init(lcdbase);
 256
 257         /*
 258          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 259          * the 'lcdbase' argument and uses custom lcd base address
 260          * by setting up gd->fb_base. Check for this condition and fixup
 261          * 'lcd_base' address.
 262          */
 263         if (map_to_sysmem(lcdbase) != gd->fb_base)
 264                 lcd_base = map_sysmem(gd->fb_base, 0);
 265
 266         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 267
 268         lcd_get_size(&lcd_line_length);
 269         lcd_is_enabled = 1;
 270         lcd_clear();
 271         lcd_enable();
 272
 273         /* Initialize the console */
 274         lcd_set_col(0);
 275 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 276         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 277 #else
 278         lcd_set_row(1); /* leave 1 blank line below logo */
 279 #endif
 280
 281         return 0;
 282 }
 283
 284 /*
 285  * This is called early in the system initialization to grab memory
 286  * for the LCD controller.
 287  * Returns new address for monitor, after reserving LCD buffer memory
 288  *
 289  * Note that this is running from ROM, so no write access to global data.
 290  */
 291 ulong lcd_setmem(ulong addr)
 292 {
 293         ulong size;
 294         int line_length;
 295
 296         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 297                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 298
 299         size = lcd_get_size(&line_length);
 300
 301         /* Round up to nearest full page, or MMU section if defined */
 302         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 303         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 304
 305         /* Allocate pages for the frame buffer. */
 306         addr -= size;
 307
 308         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 309               size >> 10, addr);
 310
 311         return addr;
 312 }
 313
 314 static void lcd_setfgcolor(int color)
 315 {
 316         lcd_color_fg = color;
 317 }
 318
 319 int lcd_getfgcolor(void)
 320 {
 321         return lcd_color_fg;
 322 }
 323
 324 static void lcd_setbgcolor(int color)
 325 {
 326         lcd_color_bg = color;
 327 }
 328
 329 int lcd_getbgcolor(void)
 330 {
 331         return lcd_color_bg;
 332 }
 333
 334 #ifdef CONFIG_LCD_LOGO
 335 __weak void lcd_logo_set_cmap(void)
 336 {
 337         int i;
 338         ushort *cmap = configuration_get_cmap();
 339
 340         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 341                 *cmap++ = bmp_logo_palette[i];
 342 }
 343
 344 void lcd_logo_plot(int x, int y)
 345 {
 346         ushort i, j;
 347         uchar *bmap = &bmp_logo_bitmap[0];
 348         unsigned bpix = NBITS(panel_info.vl_bpix);
 349         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 350         ushort *fb16;
 351
 352         debug("Logo: width %d  height %d  colors %d\n",
 353               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 354
 355         if (bpix < 12) {
 356                 WATCHDOG_RESET();
 357                 lcd_logo_set_cmap();
 358                 WATCHDOG_RESET();
 359
 360                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 361                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 362                         bmap += BMP_LOGO_WIDTH;
 363                         fb += panel_info.vl_col;
 364                 }
 365         }
 366         else { /* true color mode */
 367                 u16 col16;
 368                 fb16 = (ushort *)fb;
 369                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 370                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 371                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 372                                 fb16[j] =
 373                                         ((col16 & 0x000F) << 1) |
 374                                         ((col16 & 0x00F0) << 3) |
 375                                         ((col16 & 0x0F00) << 4);
 376                                 }
 377                         bmap += BMP_LOGO_WIDTH;
 378                         fb16 += panel_info.vl_col;
 379                 }
 380         }
 381
 382         WATCHDOG_RESET();
 383         lcd_sync();
 384 }
 385 #else
 386 static inline void lcd_logo_plot(int x, int y) {}
 387 #endif /* CONFIG_LCD_LOGO */
 388
 389 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 390 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 391 #define BMP_ALIGN_CENTER        0x7FFF
 392
 393 static void splash_align_axis(int *axis, unsigned long panel_size,
 394                                         unsigned long picture_size)
 395 {
 396         unsigned long panel_picture_delta = panel_size - picture_size;
 397         unsigned long axis_alignment;
 398
 399         if (*axis == BMP_ALIGN_CENTER)
 400                 axis_alignment = panel_picture_delta / 2;
 401         else if (*axis < 0)
 402                 axis_alignment = panel_picture_delta + *axis + 1;
 403         else
 404                 return;
 405
 406         *axis = max(0, (int)axis_alignment);
 407 }
 408 #endif
 409
 410 #ifdef CONFIG_LCD_BMP_RLE8
 411 #define BMP_RLE8_ESCAPE         0
 412 #define BMP_RLE8_EOL            0
 413 #define BMP_RLE8_EOBMP          1
 414 #define BMP_RLE8_DELTA          2
 415
 416 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 417                                   int cnt)
 418 {
 419         while (cnt > 0) {
 420                 *(*fbp)++ = cmap[*bmap++];
 421                 cnt--;
 422         }
 423 }
 424
 425 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 426 {
 427         ushort *fb = *fbp;
 428         int cnt_8copy = cnt >> 3;
 429
 430         cnt -= cnt_8copy << 3;
 431         while (cnt_8copy > 0) {
 432                 *fb++ = c;
 433                 *fb++ = c;
 434                 *fb++ = c;
 435                 *fb++ = c;
 436                 *fb++ = c;
 437                 *fb++ = c;
 438                 *fb++ = c;
 439                 *fb++ = c;
 440                 cnt_8copy--;
 441         }
 442         while (cnt > 0) {
 443                 *fb++ = c;
 444                 cnt--;
 445         }
 446         *fbp = fb;
 447 }
 448
 449 /*
 450  * Do not call this function directly, must be called from lcd_display_bitmap.
 451  */
 452 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 453                                     int x_off, int y_off)
 454 {
 455         uchar *bmap;
 456         ulong width, height;
 457         ulong cnt, runlen;
 458         int x, y;
 459         int decode = 1;
 460
 461         width = get_unaligned_le32(&bmp->header.width);
 462         height = get_unaligned_le32(&bmp->header.height);
 463         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 464
 465         x = 0;
 466         y = height - 1;
 467
 468         while (decode) {
 469                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 470                         switch (bmap[1]) {
 471                         case BMP_RLE8_EOL:
 472                                 /* end of line */
 473                                 bmap += 2;
 474                                 x = 0;
 475                                 y--;
 476                                 /* 16bpix, 2-byte per pixel, width should *2 */
 477                                 fb -= (width * 2 + lcd_line_length);
 478                                 break;
 479                         case BMP_RLE8_EOBMP:
 480                                 /* end of bitmap */
 481                                 decode = 0;
 482                                 break;
 483                         case BMP_RLE8_DELTA:
 484                                 /* delta run */
 485                                 x += bmap[2];
 486                                 y -= bmap[3];
 487                                 /* 16bpix, 2-byte per pixel, x should *2 */
 488                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 489                                         * lcd_line_length + (x + x_off) * 2);
 490                                 bmap += 4;
 491                                 break;
 492                         default:
 493                                 /* unencoded run */
 494                                 runlen = bmap[1];
 495                                 bmap += 2;
 496                                 if (y < height) {
 497                                         if (x < width) {
 498                                                 if (x + runlen > width)
 499                                                         cnt = width - x;
 500                                                 else
 501                                                         cnt = runlen;
 502                                                 draw_unencoded_bitmap(
 503                                                         (ushort **)&fb,
 504                                                         bmap, cmap, cnt);
 505                                         }
 506                                         x += runlen;
 507                                 }
 508                                 bmap += runlen;
 509                                 if (runlen & 1)
 510                                         bmap++;
 511                         }
 512                 } else {
 513                         /* encoded run */
 514                         if (y < height) {
 515                                 runlen = bmap[0];
 516                                 if (x < width) {
 517                                         /* aggregate the same code */
 518                                         while (bmap[0] == 0xff &&
 519                                                bmap[2] != BMP_RLE8_ESCAPE &&
 520                                                bmap[1] == bmap[3]) {
 521                                                 runlen += bmap[2];
 522                                                 bmap += 2;
 523                                         }
 524                                         if (x + runlen > width)
 525                                                 cnt = width - x;
 526                                         else
 527                                                 cnt = runlen;
 528                                         draw_encoded_bitmap((ushort **)&fb,
 529                                                 cmap[bmap[1]], cnt);
 530                                 }
 531                                 x += runlen;
 532                         }
 533                         bmap += 2;
 534                 }
 535         }
 536 }
 537 #endif
 538
 539 __weak void fb_put_byte(uchar **fb, uchar **from)
 540 {
 541         *(*fb)++ = *(*from)++;
 542 }
 543
 544 #if defined(CONFIG_BMP_16BPP)
 545 __weak void fb_put_word(uchar **fb, uchar **from)
 546 {
 547         *(*fb)++ = *(*from)++;
 548         *(*fb)++ = *(*from)++;
 549 }
 550 #endif /* CONFIG_BMP_16BPP */
 551
 552 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 553 {
 554         int i;
 555         bmp_color_table_entry_t cte;
 556         ushort *cmap = configuration_get_cmap();
 557
 558         for (i = 0; i < colors; ++i) {
 559                 cte = bmp->color_table[i];
 560                 *cmap = (((cte.red)   << 8) & 0xf800) |
 561                         (((cte.green) << 3) & 0x07e0) |
 562                         (((cte.blue)  >> 3) & 0x001f);
 563 #if defined(CONFIG_MPC823)
 564                 cmap--;
 565 #else
 566                 cmap++;
 567 #endif
 568         }
 569 }
 570
 571 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 572 {
 573         ushort *cmap_base = NULL;
 574         ushort i, j;
 575         uchar *fb;
 576         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 577         uchar *bmap;
 578         ushort padded_width;
 579         unsigned long width, height, byte_width;
 580         unsigned long pwidth = panel_info.vl_col;
 581         unsigned colors, bpix, bmp_bpix;
 582
 583         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 584                 bmp->header.signature[1] == 'M')) {
 585                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 586
 587                 return 1;
 588         }
 589
 590         width = get_unaligned_le32(&bmp->header.width);
 591         height = get_unaligned_le32(&bmp->header.height);
 592         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 593
 594         colors = 1 << bmp_bpix;
 595
 596         bpix = NBITS(panel_info.vl_bpix);
 597
 598         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 599                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 600                         bpix, bmp_bpix);
 601
 602                 return 1;
 603         }
 604
 605         /*
 606          * We support displaying 8bpp BMPs on 16bpp LCDs
 607          * and displaying 24bpp BMPs on 32bpp LCDs
 608          * */
 609         if (bpix != bmp_bpix &&
 610             !(bmp_bpix == 8 && bpix == 16) &&
 611             !(bmp_bpix == 24 && bpix == 32)) {
 612                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 613                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 614                 return 1;
 615         }
 616
 617         debug("Display-bmp: %d x %d  with %d colors\n",
 618                 (int)width, (int)height, (int)colors);
 619
 620         if (bmp_bpix == 8)
 621                 lcd_set_cmap(bmp, colors);
 622
 623         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 624
 625 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 626         splash_align_axis(&x, pwidth, width);
 627         splash_align_axis(&y, panel_info.vl_row, height);
 628 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 629
 630         if ((x + width) > pwidth)
 631                 width = pwidth - x;
 632         if ((y + height) > panel_info.vl_row)
 633                 height = panel_info.vl_row - y;
 634
 635         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 636         fb   = (uchar *)(lcd_base +
 637                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 638
 639         switch (bmp_bpix) {
 640         case 1:
 641         case 8: {
 642                 cmap_base = configuration_get_cmap();
 643 #ifdef CONFIG_LCD_BMP_RLE8
 644                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 645                 if (compression == BMP_BI_RLE8) {
 646                         if (bpix != 16) {
 647                                 /* TODO implement render code for bpix != 16 */
 648                                 printf("Error: only support 16 bpix");
 649                                 return 1;
 650                         }
 651                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 652                         break;
 653                 }
 654 #endif
 655
 656                 if (bpix != 16)
 657                         byte_width = width;
 658                 else
 659                         byte_width = width * 2;
 660
 661                 for (i = 0; i < height; ++i) {
 662                         WATCHDOG_RESET();
 663                         for (j = 0; j < width; j++) {
 664                                 if (bpix != 16) {
 665                                         fb_put_byte(&fb, &bmap);
 666                                 } else {
 667                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 668                                         fb += sizeof(uint16_t) / sizeof(*fb);
 669                                 }
 670                         }
 671                         bmap += (padded_width - width);
 672                         fb -= byte_width + lcd_line_length;
 673                 }
 674                 break;
 675         }
 676 #if defined(CONFIG_BMP_16BPP)
 677         case 16:
 678                 for (i = 0; i < height; ++i) {
 679                         WATCHDOG_RESET();
 680                         for (j = 0; j < width; j++)
 681                                 fb_put_word(&fb, &bmap);
 682
 683                         bmap += (padded_width - width) * 2;
 684                         fb -= width * 2 + lcd_line_length;
 685                 }
 686                 break;
 687 #endif /* CONFIG_BMP_16BPP */
 688 #if defined(CONFIG_BMP_24BMP)
 689         case 24:
 690                 for (i = 0; i < height; ++i) {
 691                         for (j = 0; j < width; j++) {
 692                                 *(fb++) = *(bmap++);
 693                                 *(fb++) = *(bmap++);
 694                                 *(fb++) = *(bmap++);
 695                                 *(fb++) = 0;
 696                         }
 697                         fb -= lcd_line_length + width * (bpix / 8);
 698                 }
 699                 break;
 700 #endif /* CONFIG_BMP_24BMP */
 701 #if defined(CONFIG_BMP_32BPP)
 702         case 32:
 703                 for (i = 0; i < height; ++i) {
 704                         for (j = 0; j < width; j++) {
 705                                 *(fb++) = *(bmap++);
 706                                 *(fb++) = *(bmap++);
 707                                 *(fb++) = *(bmap++);
 708                                 *(fb++) = *(bmap++);
 709                         }
 710                         fb -= lcd_line_length + width * (bpix / 8);
 711                 }
 712                 break;
 713 #endif /* CONFIG_BMP_32BPP */
 714         default:
 715                 break;
 716         };
 717
 718         lcd_sync();
 719         return 0;
 720 }
 721 #endif
 722
 723 static void lcd_logo(void)
 724 {
 725         lcd_logo_plot(0, 0);
 726
 727 #ifdef CONFIG_LCD_INFO
 728         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 729         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 730         lcd_show_board_info();
 731 #endif /* CONFIG_LCD_INFO */
 732 }
 733
 734 #ifdef CONFIG_SPLASHIMAGE_GUARD
 735 static int on_splashimage(const char *name, const char *value, enum env_op op,
 736         int flags)
 737 {
 738         ulong addr;
 739         int aligned;
 740
 741         if (op == env_op_delete)
 742                 return 0;
 743
 744         addr = simple_strtoul(value, NULL, 16);
 745         /* See README.displaying-bmps */
 746         aligned = (addr % 4 == 2);
 747         if (!aligned) {
 748                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 749                 return -1;
 750         }
 751
 752         return 0;
 753 }
 754
 755 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 756 #endif
 757
 758 int lcd_get_pixel_width(void)
 759 {
 760         return panel_info.vl_col;
 761 }
 762
 763 int lcd_get_pixel_height(void)
 764 {
 765         return panel_info.vl_row;
 766 }