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 <cpu_func.h>
  14 #include <env_callback.h>
  15 #include <log.h>
  16 #include <asm/cache.h>
  17 #include <init.h>
  18 #include <linux/types.h>
  19 #include <stdio_dev.h>
  20 #include <lcd.h>
  21 #include <mapmem.h>
  22 #include <watchdog.h>
  23 #include <asm/unaligned.h>
  24 #include <splash.h>
  25 #include <asm/io.h>
  26 #include <asm/unaligned.h>
  27 #include <video_font.h>
  28
  29 #ifdef CONFIG_LCD_LOGO
  30 #include <bmp_logo.h>
  31 #include <bmp_logo_data.h>
  32 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  33 #error Default Color Map overlaps with Logo Color Map
  34 #endif
  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) && !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
  69         int line_length;
  70
  71         if (lcd_flush_dcache)
  72                 flush_dcache_range((ulong)lcd_base,
  73                         (ulong)(lcd_base + lcd_get_size(&line_length)));
  74 #endif
  75 }
  76
  77 void lcd_set_flush_dcache(int flush)
  78 {
  79         lcd_flush_dcache = (flush != 0);
  80 }
  81
  82 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  83 {
  84         lcd_putc(c);
  85 }
  86
  87 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  88 {
  89         lcd_puts(s);
  90 }
  91
  92 /* Small utility to check that you got the colours right */
  93 #ifdef LCD_TEST_PATTERN
  94
  95 #if LCD_BPP == LCD_COLOR8
  96 #define N_BLK_VERT      2
  97 #define N_BLK_HOR       3
  98
  99 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 100         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 101         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 102 }; /*LCD_BPP == LCD_COLOR8 */
 103
 104 #elif LCD_BPP == LCD_COLOR16
 105 #define N_BLK_VERT      2
 106 #define N_BLK_HOR       4
 107
 108 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 109         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,   CONSOLE_COLOR_BLUE,
 110         CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,     CONSOLE_COLOR_GREY,     CONSOLE_COLOR_WHITE,
 111 };
 112 #endif /*LCD_BPP == LCD_COLOR16 */
 113
 114 static void test_pattern(void)
 115 {
 116         ushort v_max  = panel_info.vl_row;
 117         ushort h_max  = panel_info.vl_col;
 118         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 119         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 120         ushort v, h;
 121 #if LCD_BPP == LCD_COLOR8
 122         uchar *pix = (uchar *)lcd_base;
 123 #elif LCD_BPP == LCD_COLOR16
 124         ushort *pix = (ushort *)lcd_base;
 125 #endif
 126
 127         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 128                 h_max, v_max, h_step, v_step);
 129
 130         for (v = 0; v < v_max; ++v) {
 131                 uchar iy = v / v_step;
 132                 for (h = 0; h < h_max; ++h) {
 133                         uchar ix = N_BLK_HOR * iy + h / h_step;
 134                         *pix++ = test_colors[ix];
 135                 }
 136         }
 137 }
 138 #endif /* LCD_TEST_PATTERN */
 139
 140 /*
 141  * With most lcd drivers the line length is set up
 142  * by calculating it from panel_info parameters. Some
 143  * drivers need to calculate the line length differently,
 144  * so make the function weak to allow overriding it.
 145  */
 146 __weak int lcd_get_size(int *line_length)
 147 {
 148         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 149         return *line_length * panel_info.vl_row;
 150 }
 151
 152 int drv_lcd_init(void)
 153 {
 154         struct stdio_dev lcddev;
 155         int rc;
 156
 157         lcd_base = map_sysmem(gd->fb_base, 0);
 158
 159         lcd_init(lcd_base);
 160
 161         /* Device initialization */
 162         memset(&lcddev, 0, sizeof(lcddev));
 163
 164         strcpy(lcddev.name, "lcd");
 165         lcddev.ext   = 0;                       /* No extensions */
 166         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 167         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 168         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 169
 170         rc = stdio_register(&lcddev);
 171
 172         return (rc == 0) ? 1 : rc;
 173 }
 174
 175 void lcd_clear(void)
 176 {
 177         int bg_color;
 178         __maybe_unused ulong addr;
 179         static int do_splash = 1;
 180 #if LCD_BPP == LCD_COLOR8
 181         /* Setting the palette */
 182         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 183         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 184         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 185         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 186         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 187         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 188         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 189         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 190         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 191 #endif
 192
 193 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 194         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 195         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 196         bg_color = CONSOLE_COLOR_WHITE;
 197 #else
 198         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 199         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 200         bg_color = CONSOLE_COLOR_BLACK;
 201 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 202
 203 #ifdef  LCD_TEST_PATTERN
 204         test_pattern();
 205 #else
 206         /* set framebuffer to background color */
 207 #if (LCD_BPP != LCD_COLOR32)
 208         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 209 #else
 210         u32 *ppix = lcd_base;
 211         u32 i;
 212         for (i = 0;
 213            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 214            i++) {
 215                 *ppix++ = bg_color;
 216         }
 217 #endif
 218 #endif
 219         /* setup text-console */
 220         debug("[LCD] setting up console...\n");
 221         lcd_init_console(lcd_base,
 222                          panel_info.vl_col,
 223                          panel_info.vl_row,
 224                          panel_info.vl_rot);
 225         /* Paint the logo and retrieve LCD base address */
 226         debug("[LCD] Drawing the logo...\n");
 227         if (do_splash) {
 228                 if (splash_display() == 0) {
 229                         do_splash = 0;
 230                         lcd_sync();
 231                         return;
 232                 }
 233         }
 234
 235         lcd_logo();
 236 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 237         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 238         lcd_init_console((void *)addr, panel_info.vl_col,
 239                          panel_info.vl_row, panel_info.vl_rot);
 240 #endif
 241         lcd_sync();
 242 }
 243
 244 static int lcd_init(void *lcdbase)
 245 {
 246         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 247         lcd_ctrl_init(lcdbase);
 248
 249         /*
 250          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 251          * the 'lcdbase' argument and uses custom lcd base address
 252          * by setting up gd->fb_base. Check for this condition and fixup
 253          * 'lcd_base' address.
 254          */
 255         if (map_to_sysmem(lcdbase) != gd->fb_base)
 256                 lcd_base = map_sysmem(gd->fb_base, 0);
 257
 258         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 259
 260         lcd_get_size(&lcd_line_length);
 261         lcd_is_enabled = 1;
 262         lcd_clear();
 263         lcd_enable();
 264
 265         /* Initialize the console */
 266         lcd_set_col(0);
 267 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 268         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 269 #else
 270         lcd_set_row(1); /* leave 1 blank line below logo */
 271 #endif
 272
 273         return 0;
 274 }
 275
 276 /*
 277  * This is called early in the system initialization to grab memory
 278  * for the LCD controller.
 279  * Returns new address for monitor, after reserving LCD buffer memory
 280  *
 281  * Note that this is running from ROM, so no write access to global data.
 282  */
 283 ulong lcd_setmem(ulong addr)
 284 {
 285         ulong size;
 286         int line_length;
 287
 288         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 289                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 290
 291         size = lcd_get_size(&line_length);
 292
 293         /* Round up to nearest full page, or MMU section if defined */
 294         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 295         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 296
 297         /* Allocate pages for the frame buffer. */
 298         addr -= size;
 299
 300         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 301               size >> 10, addr);
 302
 303         return addr;
 304 }
 305
 306 static void lcd_setfgcolor(int color)
 307 {
 308         lcd_color_fg = color;
 309 }
 310
 311 int lcd_getfgcolor(void)
 312 {
 313         return lcd_color_fg;
 314 }
 315
 316 static void lcd_setbgcolor(int color)
 317 {
 318         lcd_color_bg = color;
 319 }
 320
 321 int lcd_getbgcolor(void)
 322 {
 323         return lcd_color_bg;
 324 }
 325
 326 #ifdef CONFIG_LCD_LOGO
 327 __weak void lcd_logo_set_cmap(void)
 328 {
 329         int i;
 330         ushort *cmap = configuration_get_cmap();
 331
 332         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 333                 *cmap++ = bmp_logo_palette[i];
 334 }
 335
 336 void lcd_logo_plot(int x, int y)
 337 {
 338         ushort i, j;
 339         uchar *bmap = &bmp_logo_bitmap[0];
 340         unsigned bpix = NBITS(panel_info.vl_bpix);
 341         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 342         ushort *fb16;
 343
 344         debug("Logo: width %d  height %d  colors %d\n",
 345               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 346
 347         if (bpix < 12) {
 348                 WATCHDOG_RESET();
 349                 lcd_logo_set_cmap();
 350                 WATCHDOG_RESET();
 351
 352                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 353                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 354                         bmap += BMP_LOGO_WIDTH;
 355                         fb += panel_info.vl_col;
 356                 }
 357         }
 358         else { /* true color mode */
 359                 u16 col16;
 360                 fb16 = (ushort *)fb;
 361                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 362                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 363                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 364                                 fb16[j] =
 365                                         ((col16 & 0x000F) << 1) |
 366                                         ((col16 & 0x00F0) << 3) |
 367                                         ((col16 & 0x0F00) << 4);
 368                                 }
 369                         bmap += BMP_LOGO_WIDTH;
 370                         fb16 += panel_info.vl_col;
 371                 }
 372         }
 373
 374         WATCHDOG_RESET();
 375         lcd_sync();
 376 }
 377 #else
 378 static inline void lcd_logo_plot(int x, int y) {}
 379 #endif /* CONFIG_LCD_LOGO */
 380
 381 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 382 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 383
 384 static void splash_align_axis(int *axis, unsigned long panel_size,
 385                                         unsigned long picture_size)
 386 {
 387         unsigned long panel_picture_delta = panel_size - picture_size;
 388         unsigned long axis_alignment;
 389
 390         if (*axis == BMP_ALIGN_CENTER)
 391                 axis_alignment = panel_picture_delta / 2;
 392         else if (*axis < 0)
 393                 axis_alignment = panel_picture_delta + *axis + 1;
 394         else
 395                 return;
 396
 397         *axis = max(0, (int)axis_alignment);
 398 }
 399 #endif
 400
 401 #ifdef CONFIG_LCD_BMP_RLE8
 402 #define BMP_RLE8_ESCAPE         0
 403 #define BMP_RLE8_EOL            0
 404 #define BMP_RLE8_EOBMP          1
 405 #define BMP_RLE8_DELTA          2
 406
 407 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 408                                   int cnt)
 409 {
 410         while (cnt > 0) {
 411                 *(*fbp)++ = cmap[*bmap++];
 412                 cnt--;
 413         }
 414 }
 415
 416 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 417 {
 418         ushort *fb = *fbp;
 419         int cnt_8copy = cnt >> 3;
 420
 421         cnt -= cnt_8copy << 3;
 422         while (cnt_8copy > 0) {
 423                 *fb++ = c;
 424                 *fb++ = c;
 425                 *fb++ = c;
 426                 *fb++ = c;
 427                 *fb++ = c;
 428                 *fb++ = c;
 429                 *fb++ = c;
 430                 *fb++ = c;
 431                 cnt_8copy--;
 432         }
 433         while (cnt > 0) {
 434                 *fb++ = c;
 435                 cnt--;
 436         }
 437         *fbp = fb;
 438 }
 439
 440 /*
 441  * Do not call this function directly, must be called from lcd_display_bitmap.
 442  */
 443 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 444                                     uchar *fb, int x_off, int y_off)
 445 {
 446         uchar *bmap;
 447         ulong width, height;
 448         ulong cnt, runlen;
 449         int x, y;
 450         int decode = 1;
 451
 452         width = get_unaligned_le32(&bmp->header.width);
 453         height = get_unaligned_le32(&bmp->header.height);
 454         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 455
 456         x = 0;
 457         y = height - 1;
 458
 459         while (decode) {
 460                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 461                         switch (bmap[1]) {
 462                         case BMP_RLE8_EOL:
 463                                 /* end of line */
 464                                 bmap += 2;
 465                                 x = 0;
 466                                 y--;
 467                                 /* 16bpix, 2-byte per pixel, width should *2 */
 468                                 fb -= (width * 2 + lcd_line_length);
 469                                 break;
 470                         case BMP_RLE8_EOBMP:
 471                                 /* end of bitmap */
 472                                 decode = 0;
 473                                 break;
 474                         case BMP_RLE8_DELTA:
 475                                 /* delta run */
 476                                 x += bmap[2];
 477                                 y -= bmap[3];
 478                                 /* 16bpix, 2-byte per pixel, x should *2 */
 479                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 480                                         * lcd_line_length + (x + x_off) * 2);
 481                                 bmap += 4;
 482                                 break;
 483                         default:
 484                                 /* unencoded run */
 485                                 runlen = bmap[1];
 486                                 bmap += 2;
 487                                 if (y < height) {
 488                                         if (x < width) {
 489                                                 if (x + runlen > width)
 490                                                         cnt = width - x;
 491                                                 else
 492                                                         cnt = runlen;
 493                                                 draw_unencoded_bitmap(
 494                                                         (ushort **)&fb,
 495                                                         bmap, cmap, cnt);
 496                                         }
 497                                         x += runlen;
 498                                 }
 499                                 bmap += runlen;
 500                                 if (runlen & 1)
 501                                         bmap++;
 502                         }
 503                 } else {
 504                         /* encoded run */
 505                         if (y < height) {
 506                                 runlen = bmap[0];
 507                                 if (x < width) {
 508                                         /* aggregate the same code */
 509                                         while (bmap[0] == 0xff &&
 510                                                bmap[2] != BMP_RLE8_ESCAPE &&
 511                                                bmap[1] == bmap[3]) {
 512                                                 runlen += bmap[2];
 513                                                 bmap += 2;
 514                                         }
 515                                         if (x + runlen > width)
 516                                                 cnt = width - x;
 517                                         else
 518                                                 cnt = runlen;
 519                                         draw_encoded_bitmap((ushort **)&fb,
 520                                                 cmap[bmap[1]], cnt);
 521                                 }
 522                                 x += runlen;
 523                         }
 524                         bmap += 2;
 525                 }
 526         }
 527 }
 528 #endif
 529
 530 __weak void fb_put_byte(uchar **fb, uchar **from)
 531 {
 532         *(*fb)++ = *(*from)++;
 533 }
 534
 535 #if defined(CONFIG_BMP_16BPP)
 536 __weak void fb_put_word(uchar **fb, uchar **from)
 537 {
 538         *(*fb)++ = *(*from)++;
 539         *(*fb)++ = *(*from)++;
 540 }
 541 #endif /* CONFIG_BMP_16BPP */
 542
 543 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 544 {
 545         int i;
 546         struct bmp_color_table_entry cte;
 547         ushort *cmap = configuration_get_cmap();
 548
 549         for (i = 0; i < colors; ++i) {
 550                 cte = bmp->color_table[i];
 551                 *cmap = (((cte.red)   << 8) & 0xf800) |
 552                         (((cte.green) << 3) & 0x07e0) |
 553                         (((cte.blue)  >> 3) & 0x001f);
 554                 cmap++;
 555         }
 556 }
 557
 558 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 559 {
 560         ushort *cmap_base = NULL;
 561         ushort i, j;
 562         uchar *fb;
 563         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 564         uchar *bmap;
 565         ushort padded_width;
 566         unsigned long width, height, byte_width;
 567         unsigned long pwidth = panel_info.vl_col;
 568         unsigned colors, bpix, bmp_bpix;
 569         int hdr_size;
 570         struct bmp_color_table_entry *palette;
 571
 572         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 573                 bmp->header.signature[1] == 'M')) {
 574                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 575
 576                 return 1;
 577         }
 578
 579         palette = bmp->color_table;
 580         width = get_unaligned_le32(&bmp->header.width);
 581         height = get_unaligned_le32(&bmp->header.height);
 582         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 583         hdr_size = get_unaligned_le16(&bmp->header.size);
 584         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 585
 586         colors = 1 << bmp_bpix;
 587
 588         bpix = NBITS(panel_info.vl_bpix);
 589
 590         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 591                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 592                         bpix, bmp_bpix);
 593
 594                 return 1;
 595         }
 596
 597         /*
 598          * We support displaying 8bpp BMPs on 16bpp LCDs
 599          * and displaying 24bpp BMPs on 32bpp LCDs
 600          * */
 601         if (bpix != bmp_bpix &&
 602             !(bmp_bpix == 8 && bpix == 16) &&
 603             !(bmp_bpix == 24 && bpix == 32)) {
 604                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 605                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 606                 return 1;
 607         }
 608
 609         debug("Display-bmp: %d x %d  with %d colors, display %d\n",
 610               (int)width, (int)height, (int)colors, 1 << bpix);
 611
 612         if (bmp_bpix == 8)
 613                 lcd_set_cmap(bmp, colors);
 614
 615         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 616
 617 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 618         splash_align_axis(&x, pwidth, width);
 619         splash_align_axis(&y, panel_info.vl_row, height);
 620 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 621
 622         if ((x + width) > pwidth)
 623                 width = pwidth - x;
 624         if ((y + height) > panel_info.vl_row)
 625                 height = panel_info.vl_row - y;
 626
 627         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 628         fb   = (uchar *)(lcd_base +
 629                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 630
 631         switch (bmp_bpix) {
 632         case 1:
 633         case 8: {
 634                 cmap_base = configuration_get_cmap();
 635 #ifdef CONFIG_LCD_BMP_RLE8
 636                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 637                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 638                 if (compression == BMP_BI_RLE8) {
 639                         if (bpix != 16) {
 640                                 /* TODO implement render code for bpix != 16 */
 641                                 printf("Error: only support 16 bpix");
 642                                 return 1;
 643                         }
 644                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 645                         break;
 646                 }
 647 #endif
 648
 649                 if (bpix != 16)
 650                         byte_width = width;
 651                 else
 652                         byte_width = width * 2;
 653
 654                 for (i = 0; i < height; ++i) {
 655                         WATCHDOG_RESET();
 656                         for (j = 0; j < width; j++) {
 657                                 if (bpix != 16) {
 658                                         fb_put_byte(&fb, &bmap);
 659                                 } else {
 660                                         struct bmp_color_table_entry *entry;
 661                                         uint val;
 662
 663                                         if (cmap_base) {
 664                                                 val = cmap_base[*bmap];
 665                                         } else {
 666                                                 entry = &palette[*bmap];
 667                                                 val = entry->blue >> 3 |
 668                                                         entry->green >> 2 << 5 |
 669                                                         entry->red >> 3 << 11;
 670                                         }
 671                                         *(uint16_t *)fb = val;
 672                                         bmap++;
 673                                         fb += sizeof(uint16_t) / sizeof(*fb);
 674                                 }
 675                         }
 676                         bmap += (padded_width - width);
 677                         fb -= byte_width + lcd_line_length;
 678                 }
 679                 break;
 680         }
 681 #if defined(CONFIG_BMP_16BPP)
 682         case 16:
 683                 for (i = 0; i < height; ++i) {
 684                         WATCHDOG_RESET();
 685                         for (j = 0; j < width; j++)
 686                                 fb_put_word(&fb, &bmap);
 687
 688                         bmap += (padded_width - width) * 2;
 689                         fb -= width * 2 + lcd_line_length;
 690                 }
 691                 break;
 692 #endif /* CONFIG_BMP_16BPP */
 693 #if defined(CONFIG_BMP_24BPP)
 694         case 24:
 695                 for (i = 0; i < height; ++i) {
 696                         for (j = 0; j < width; j++) {
 697                                 *(fb++) = *(bmap++);
 698                                 *(fb++) = *(bmap++);
 699                                 *(fb++) = *(bmap++);
 700                                 *(fb++) = 0;
 701                         }
 702                         fb -= lcd_line_length + width * (bpix / 8);
 703                 }
 704                 break;
 705 #endif /* CONFIG_BMP_24BPP */
 706 #if defined(CONFIG_BMP_32BPP)
 707         case 32:
 708                 for (i = 0; i < height; ++i) {
 709                         for (j = 0; j < width; j++) {
 710                                 *(fb++) = *(bmap++);
 711                                 *(fb++) = *(bmap++);
 712                                 *(fb++) = *(bmap++);
 713                                 *(fb++) = *(bmap++);
 714                         }
 715                         fb -= lcd_line_length + width * (bpix / 8);
 716                 }
 717                 break;
 718 #endif /* CONFIG_BMP_32BPP */
 719         default:
 720                 break;
 721         };
 722
 723         lcd_sync();
 724         return 0;
 725 }
 726 #endif
 727
 728 static void lcd_logo(void)
 729 {
 730         lcd_logo_plot(0, 0);
 731
 732 #ifdef CONFIG_LCD_INFO
 733         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 734         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 735         lcd_show_board_info();
 736 #endif /* CONFIG_LCD_INFO */
 737 }
 738
 739 #ifdef CONFIG_SPLASHIMAGE_GUARD
 740 static int on_splashimage(const char *name, const char *value, enum env_op op,
 741         int flags)
 742 {
 743         ulong addr;
 744         int aligned;
 745
 746         if (op == env_op_delete)
 747                 return 0;
 748
 749         addr = simple_strtoul(value, NULL, 16);
 750         /* See README.displaying-bmps */
 751         aligned = (addr % 4 == 2);
 752         if (!aligned) {
 753                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 754                 return -1;
 755         }
 756
 757         return 0;
 758 }
 759
 760 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 761 #endif
 762
 763 int lcd_get_pixel_width(void)
 764 {
 765         return panel_info.vl_col;
 766 }
 767
 768 int lcd_get_pixel_height(void)
 769 {
 770         return panel_info.vl_row;
 771 }