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 <asm/cache.h>
  16 #include <linux/types.h>
  17 #include <stdio_dev.h>
  18 #include <lcd.h>
  19 #include <mapmem.h>
  20 #include <watchdog.h>
  21 #include <asm/unaligned.h>
  22 #include <splash.h>
  23 #include <asm/io.h>
  24 #include <asm/unaligned.h>
  25 #include <video_font.h>
  26
  27 #ifdef CONFIG_LCD_LOGO
  28 #include <bmp_logo.h>
  29 #include <bmp_logo_data.h>
  30 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  31 #error Default Color Map overlaps with Logo Color Map
  32 #endif
  33 #endif
  34
  35 #ifndef CONFIG_LCD_ALIGNMENT
  36 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  37 #endif
  38
  39 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  40         (LCD_BPP != LCD_COLOR32)
  41 #error Unsupported LCD BPP.
  42 #endif
  43
  44 DECLARE_GLOBAL_DATA_PTR;
  45
  46 static int lcd_init(void *lcdbase);
  47 static void lcd_logo(void);
  48 static void lcd_setfgcolor(int color);
  49 static void lcd_setbgcolor(int color);
  50
  51 static int lcd_color_fg;
  52 static int lcd_color_bg;
  53 int lcd_line_length;
  54 char lcd_is_enabled = 0;
  55 static void *lcd_base;                  /* Start of framebuffer memory  */
  56 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  57
  58 /* Flush LCD activity to the caches */
  59 void lcd_sync(void)
  60 {
  61         /*
  62          * flush_dcache_range() is declared in common.h but it seems that some
  63          * architectures do not actually implement it. Is there a way to find
  64          * out whether it exists? For now, ARM is safe.
  65          */
  66 #if defined(CONFIG_ARM) && !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
  67         int line_length;
  68
  69         if (lcd_flush_dcache)
  70                 flush_dcache_range((ulong)lcd_base,
  71                         (ulong)(lcd_base + lcd_get_size(&line_length)));
  72 #endif
  73 }
  74
  75 void lcd_set_flush_dcache(int flush)
  76 {
  77         lcd_flush_dcache = (flush != 0);
  78 }
  79
  80 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  81 {
  82         lcd_putc(c);
  83 }
  84
  85 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  86 {
  87         lcd_puts(s);
  88 }
  89
  90 /* Small utility to check that you got the colours right */
  91 #ifdef LCD_TEST_PATTERN
  92
  93 #if LCD_BPP == LCD_COLOR8
  94 #define N_BLK_VERT      2
  95 #define N_BLK_HOR       3
  96
  97 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
  98         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
  99         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 100 }; /*LCD_BPP == LCD_COLOR8 */
 101
 102 #elif LCD_BPP == LCD_COLOR16
 103 #define N_BLK_VERT      2
 104 #define N_BLK_HOR       4
 105
 106 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 107         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,   CONSOLE_COLOR_BLUE,
 108         CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,     CONSOLE_COLOR_GREY,     CONSOLE_COLOR_WHITE,
 109 };
 110 #endif /*LCD_BPP == LCD_COLOR16 */
 111
 112 static void test_pattern(void)
 113 {
 114         ushort v_max  = panel_info.vl_row;
 115         ushort h_max  = panel_info.vl_col;
 116         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 117         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 118         ushort v, h;
 119 #if LCD_BPP == LCD_COLOR8
 120         uchar *pix = (uchar *)lcd_base;
 121 #elif LCD_BPP == LCD_COLOR16
 122         ushort *pix = (ushort *)lcd_base;
 123 #endif
 124
 125         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 126                 h_max, v_max, h_step, v_step);
 127
 128         for (v = 0; v < v_max; ++v) {
 129                 uchar iy = v / v_step;
 130                 for (h = 0; h < h_max; ++h) {
 131                         uchar ix = N_BLK_HOR * iy + h / h_step;
 132                         *pix++ = test_colors[ix];
 133                 }
 134         }
 135 }
 136 #endif /* LCD_TEST_PATTERN */
 137
 138 /*
 139  * With most lcd drivers the line length is set up
 140  * by calculating it from panel_info parameters. Some
 141  * drivers need to calculate the line length differently,
 142  * so make the function weak to allow overriding it.
 143  */
 144 __weak int lcd_get_size(int *line_length)
 145 {
 146         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 147         return *line_length * panel_info.vl_row;
 148 }
 149
 150 int drv_lcd_init(void)
 151 {
 152         struct stdio_dev lcddev;
 153         int rc;
 154
 155         lcd_base = map_sysmem(gd->fb_base, 0);
 156
 157         lcd_init(lcd_base);
 158
 159         /* Device initialization */
 160         memset(&lcddev, 0, sizeof(lcddev));
 161
 162         strcpy(lcddev.name, "lcd");
 163         lcddev.ext   = 0;                       /* No extensions */
 164         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 165         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 166         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 167
 168         rc = stdio_register(&lcddev);
 169
 170         return (rc == 0) ? 1 : rc;
 171 }
 172
 173 void lcd_clear(void)
 174 {
 175         int bg_color;
 176         __maybe_unused ulong addr;
 177         static int do_splash = 1;
 178 #if LCD_BPP == LCD_COLOR8
 179         /* Setting the palette */
 180         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 181         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 182         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 183         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 184         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 185         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 186         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 187         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 188         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 189 #endif
 190
 191 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 192         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 193         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 194         bg_color = CONSOLE_COLOR_WHITE;
 195 #else
 196         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 197         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 198         bg_color = CONSOLE_COLOR_BLACK;
 199 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 200
 201 #ifdef  LCD_TEST_PATTERN
 202         test_pattern();
 203 #else
 204         /* set framebuffer to background color */
 205 #if (LCD_BPP != LCD_COLOR32)
 206         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 207 #else
 208         u32 *ppix = lcd_base;
 209         u32 i;
 210         for (i = 0;
 211            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 212            i++) {
 213                 *ppix++ = bg_color;
 214         }
 215 #endif
 216 #endif
 217         /* setup text-console */
 218         debug("[LCD] setting up console...\n");
 219         lcd_init_console(lcd_base,
 220                          panel_info.vl_col,
 221                          panel_info.vl_row,
 222                          panel_info.vl_rot);
 223         /* Paint the logo and retrieve LCD base address */
 224         debug("[LCD] Drawing the logo...\n");
 225         if (do_splash) {
 226                 if (splash_display() == 0) {
 227                         do_splash = 0;
 228                         lcd_sync();
 229                         return;
 230                 }
 231         }
 232
 233         lcd_logo();
 234 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 235         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 236         lcd_init_console((void *)addr, panel_info.vl_col,
 237                          panel_info.vl_row, panel_info.vl_rot);
 238 #endif
 239         lcd_sync();
 240 }
 241
 242 static int lcd_init(void *lcdbase)
 243 {
 244         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 245         lcd_ctrl_init(lcdbase);
 246
 247         /*
 248          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 249          * the 'lcdbase' argument and uses custom lcd base address
 250          * by setting up gd->fb_base. Check for this condition and fixup
 251          * 'lcd_base' address.
 252          */
 253         if (map_to_sysmem(lcdbase) != gd->fb_base)
 254                 lcd_base = map_sysmem(gd->fb_base, 0);
 255
 256         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 257
 258         lcd_get_size(&lcd_line_length);
 259         lcd_is_enabled = 1;
 260         lcd_clear();
 261         lcd_enable();
 262
 263         /* Initialize the console */
 264         lcd_set_col(0);
 265 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 266         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 267 #else
 268         lcd_set_row(1); /* leave 1 blank line below logo */
 269 #endif
 270
 271         return 0;
 272 }
 273
 274 /*
 275  * This is called early in the system initialization to grab memory
 276  * for the LCD controller.
 277  * Returns new address for monitor, after reserving LCD buffer memory
 278  *
 279  * Note that this is running from ROM, so no write access to global data.
 280  */
 281 ulong lcd_setmem(ulong addr)
 282 {
 283         ulong size;
 284         int line_length;
 285
 286         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 287                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 288
 289         size = lcd_get_size(&line_length);
 290
 291         /* Round up to nearest full page, or MMU section if defined */
 292         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 293         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 294
 295         /* Allocate pages for the frame buffer. */
 296         addr -= size;
 297
 298         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 299               size >> 10, addr);
 300
 301         return addr;
 302 }
 303
 304 static void lcd_setfgcolor(int color)
 305 {
 306         lcd_color_fg = color;
 307 }
 308
 309 int lcd_getfgcolor(void)
 310 {
 311         return lcd_color_fg;
 312 }
 313
 314 static void lcd_setbgcolor(int color)
 315 {
 316         lcd_color_bg = color;
 317 }
 318
 319 int lcd_getbgcolor(void)
 320 {
 321         return lcd_color_bg;
 322 }
 323
 324 #ifdef CONFIG_LCD_LOGO
 325 __weak void lcd_logo_set_cmap(void)
 326 {
 327         int i;
 328         ushort *cmap = configuration_get_cmap();
 329
 330         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 331                 *cmap++ = bmp_logo_palette[i];
 332 }
 333
 334 void lcd_logo_plot(int x, int y)
 335 {
 336         ushort i, j;
 337         uchar *bmap = &bmp_logo_bitmap[0];
 338         unsigned bpix = NBITS(panel_info.vl_bpix);
 339         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 340         ushort *fb16;
 341
 342         debug("Logo: width %d  height %d  colors %d\n",
 343               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 344
 345         if (bpix < 12) {
 346                 WATCHDOG_RESET();
 347                 lcd_logo_set_cmap();
 348                 WATCHDOG_RESET();
 349
 350                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 351                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 352                         bmap += BMP_LOGO_WIDTH;
 353                         fb += panel_info.vl_col;
 354                 }
 355         }
 356         else { /* true color mode */
 357                 u16 col16;
 358                 fb16 = (ushort *)fb;
 359                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 360                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 361                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 362                                 fb16[j] =
 363                                         ((col16 & 0x000F) << 1) |
 364                                         ((col16 & 0x00F0) << 3) |
 365                                         ((col16 & 0x0F00) << 4);
 366                                 }
 367                         bmap += BMP_LOGO_WIDTH;
 368                         fb16 += panel_info.vl_col;
 369                 }
 370         }
 371
 372         WATCHDOG_RESET();
 373         lcd_sync();
 374 }
 375 #else
 376 static inline void lcd_logo_plot(int x, int y) {}
 377 #endif /* CONFIG_LCD_LOGO */
 378
 379 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 380 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 381
 382 static void splash_align_axis(int *axis, unsigned long panel_size,
 383                                         unsigned long picture_size)
 384 {
 385         unsigned long panel_picture_delta = panel_size - picture_size;
 386         unsigned long axis_alignment;
 387
 388         if (*axis == BMP_ALIGN_CENTER)
 389                 axis_alignment = panel_picture_delta / 2;
 390         else if (*axis < 0)
 391                 axis_alignment = panel_picture_delta + *axis + 1;
 392         else
 393                 return;
 394
 395         *axis = max(0, (int)axis_alignment);
 396 }
 397 #endif
 398
 399 #ifdef CONFIG_LCD_BMP_RLE8
 400 #define BMP_RLE8_ESCAPE         0
 401 #define BMP_RLE8_EOL            0
 402 #define BMP_RLE8_EOBMP          1
 403 #define BMP_RLE8_DELTA          2
 404
 405 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 406                                   int cnt)
 407 {
 408         while (cnt > 0) {
 409                 *(*fbp)++ = cmap[*bmap++];
 410                 cnt--;
 411         }
 412 }
 413
 414 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 415 {
 416         ushort *fb = *fbp;
 417         int cnt_8copy = cnt >> 3;
 418
 419         cnt -= cnt_8copy << 3;
 420         while (cnt_8copy > 0) {
 421                 *fb++ = c;
 422                 *fb++ = c;
 423                 *fb++ = c;
 424                 *fb++ = c;
 425                 *fb++ = c;
 426                 *fb++ = c;
 427                 *fb++ = c;
 428                 *fb++ = c;
 429                 cnt_8copy--;
 430         }
 431         while (cnt > 0) {
 432                 *fb++ = c;
 433                 cnt--;
 434         }
 435         *fbp = fb;
 436 }
 437
 438 /*
 439  * Do not call this function directly, must be called from lcd_display_bitmap.
 440  */
 441 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 442                                     uchar *fb, int x_off, int y_off)
 443 {
 444         uchar *bmap;
 445         ulong width, height;
 446         ulong cnt, runlen;
 447         int x, y;
 448         int decode = 1;
 449
 450         width = get_unaligned_le32(&bmp->header.width);
 451         height = get_unaligned_le32(&bmp->header.height);
 452         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 453
 454         x = 0;
 455         y = height - 1;
 456
 457         while (decode) {
 458                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 459                         switch (bmap[1]) {
 460                         case BMP_RLE8_EOL:
 461                                 /* end of line */
 462                                 bmap += 2;
 463                                 x = 0;
 464                                 y--;
 465                                 /* 16bpix, 2-byte per pixel, width should *2 */
 466                                 fb -= (width * 2 + lcd_line_length);
 467                                 break;
 468                         case BMP_RLE8_EOBMP:
 469                                 /* end of bitmap */
 470                                 decode = 0;
 471                                 break;
 472                         case BMP_RLE8_DELTA:
 473                                 /* delta run */
 474                                 x += bmap[2];
 475                                 y -= bmap[3];
 476                                 /* 16bpix, 2-byte per pixel, x should *2 */
 477                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 478                                         * lcd_line_length + (x + x_off) * 2);
 479                                 bmap += 4;
 480                                 break;
 481                         default:
 482                                 /* unencoded run */
 483                                 runlen = bmap[1];
 484                                 bmap += 2;
 485                                 if (y < height) {
 486                                         if (x < width) {
 487                                                 if (x + runlen > width)
 488                                                         cnt = width - x;
 489                                                 else
 490                                                         cnt = runlen;
 491                                                 draw_unencoded_bitmap(
 492                                                         (ushort **)&fb,
 493                                                         bmap, cmap, cnt);
 494                                         }
 495                                         x += runlen;
 496                                 }
 497                                 bmap += runlen;
 498                                 if (runlen & 1)
 499                                         bmap++;
 500                         }
 501                 } else {
 502                         /* encoded run */
 503                         if (y < height) {
 504                                 runlen = bmap[0];
 505                                 if (x < width) {
 506                                         /* aggregate the same code */
 507                                         while (bmap[0] == 0xff &&
 508                                                bmap[2] != BMP_RLE8_ESCAPE &&
 509                                                bmap[1] == bmap[3]) {
 510                                                 runlen += bmap[2];
 511                                                 bmap += 2;
 512                                         }
 513                                         if (x + runlen > width)
 514                                                 cnt = width - x;
 515                                         else
 516                                                 cnt = runlen;
 517                                         draw_encoded_bitmap((ushort **)&fb,
 518                                                 cmap[bmap[1]], cnt);
 519                                 }
 520                                 x += runlen;
 521                         }
 522                         bmap += 2;
 523                 }
 524         }
 525 }
 526 #endif
 527
 528 __weak void fb_put_byte(uchar **fb, uchar **from)
 529 {
 530         *(*fb)++ = *(*from)++;
 531 }
 532
 533 #if defined(CONFIG_BMP_16BPP)
 534 __weak void fb_put_word(uchar **fb, uchar **from)
 535 {
 536         *(*fb)++ = *(*from)++;
 537         *(*fb)++ = *(*from)++;
 538 }
 539 #endif /* CONFIG_BMP_16BPP */
 540
 541 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 542 {
 543         int i;
 544         struct bmp_color_table_entry cte;
 545         ushort *cmap = configuration_get_cmap();
 546
 547         for (i = 0; i < colors; ++i) {
 548                 cte = bmp->color_table[i];
 549                 *cmap = (((cte.red)   << 8) & 0xf800) |
 550                         (((cte.green) << 3) & 0x07e0) |
 551                         (((cte.blue)  >> 3) & 0x001f);
 552                 cmap++;
 553         }
 554 }
 555
 556 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 557 {
 558         ushort *cmap_base = NULL;
 559         ushort i, j;
 560         uchar *fb;
 561         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 562         uchar *bmap;
 563         ushort padded_width;
 564         unsigned long width, height, byte_width;
 565         unsigned long pwidth = panel_info.vl_col;
 566         unsigned colors, bpix, bmp_bpix;
 567         int hdr_size;
 568         struct bmp_color_table_entry *palette;
 569
 570         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 571                 bmp->header.signature[1] == 'M')) {
 572                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 573
 574                 return 1;
 575         }
 576
 577         palette = bmp->color_table;
 578         width = get_unaligned_le32(&bmp->header.width);
 579         height = get_unaligned_le32(&bmp->header.height);
 580         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 581         hdr_size = get_unaligned_le16(&bmp->header.size);
 582         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 583
 584         colors = 1 << bmp_bpix;
 585
 586         bpix = NBITS(panel_info.vl_bpix);
 587
 588         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 589                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 590                         bpix, bmp_bpix);
 591
 592                 return 1;
 593         }
 594
 595         /*
 596          * We support displaying 8bpp BMPs on 16bpp LCDs
 597          * and displaying 24bpp BMPs on 32bpp LCDs
 598          * */
 599         if (bpix != bmp_bpix &&
 600             !(bmp_bpix == 8 && bpix == 16) &&
 601             !(bmp_bpix == 24 && bpix == 32)) {
 602                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 603                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 604                 return 1;
 605         }
 606
 607         debug("Display-bmp: %d x %d  with %d colors, display %d\n",
 608               (int)width, (int)height, (int)colors, 1 << bpix);
 609
 610         if (bmp_bpix == 8)
 611                 lcd_set_cmap(bmp, colors);
 612
 613         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 614
 615 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 616         splash_align_axis(&x, pwidth, width);
 617         splash_align_axis(&y, panel_info.vl_row, height);
 618 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 619
 620         if ((x + width) > pwidth)
 621                 width = pwidth - x;
 622         if ((y + height) > panel_info.vl_row)
 623                 height = panel_info.vl_row - y;
 624
 625         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 626         fb   = (uchar *)(lcd_base +
 627                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 628
 629         switch (bmp_bpix) {
 630         case 1:
 631         case 8: {
 632                 cmap_base = configuration_get_cmap();
 633 #ifdef CONFIG_LCD_BMP_RLE8
 634                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 635                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 636                 if (compression == BMP_BI_RLE8) {
 637                         if (bpix != 16) {
 638                                 /* TODO implement render code for bpix != 16 */
 639                                 printf("Error: only support 16 bpix");
 640                                 return 1;
 641                         }
 642                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 643                         break;
 644                 }
 645 #endif
 646
 647                 if (bpix != 16)
 648                         byte_width = width;
 649                 else
 650                         byte_width = width * 2;
 651
 652                 for (i = 0; i < height; ++i) {
 653                         WATCHDOG_RESET();
 654                         for (j = 0; j < width; j++) {
 655                                 if (bpix != 16) {
 656                                         fb_put_byte(&fb, &bmap);
 657                                 } else {
 658                                         struct bmp_color_table_entry *entry;
 659                                         uint val;
 660
 661                                         if (cmap_base) {
 662                                                 val = cmap_base[*bmap];
 663                                         } else {
 664                                                 entry = &palette[*bmap];
 665                                                 val = entry->blue >> 3 |
 666                                                         entry->green >> 2 << 5 |
 667                                                         entry->red >> 3 << 11;
 668                                         }
 669                                         *(uint16_t *)fb = val;
 670                                         bmap++;
 671                                         fb += sizeof(uint16_t) / sizeof(*fb);
 672                                 }
 673                         }
 674                         bmap += (padded_width - width);
 675                         fb -= byte_width + lcd_line_length;
 676                 }
 677                 break;
 678         }
 679 #if defined(CONFIG_BMP_16BPP)
 680         case 16:
 681                 for (i = 0; i < height; ++i) {
 682                         WATCHDOG_RESET();
 683                         for (j = 0; j < width; j++)
 684                                 fb_put_word(&fb, &bmap);
 685
 686                         bmap += (padded_width - width) * 2;
 687                         fb -= width * 2 + lcd_line_length;
 688                 }
 689                 break;
 690 #endif /* CONFIG_BMP_16BPP */
 691 #if defined(CONFIG_BMP_24BPP)
 692         case 24:
 693                 for (i = 0; i < height; ++i) {
 694                         for (j = 0; j < width; j++) {
 695                                 *(fb++) = *(bmap++);
 696                                 *(fb++) = *(bmap++);
 697                                 *(fb++) = *(bmap++);
 698                                 *(fb++) = 0;
 699                         }
 700                         fb -= lcd_line_length + width * (bpix / 8);
 701                 }
 702                 break;
 703 #endif /* CONFIG_BMP_24BPP */
 704 #if defined(CONFIG_BMP_32BPP)
 705         case 32:
 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++) = *(bmap++);
 712                         }
 713                         fb -= lcd_line_length + width * (bpix / 8);
 714                 }
 715                 break;
 716 #endif /* CONFIG_BMP_32BPP */
 717         default:
 718                 break;
 719         };
 720
 721         lcd_sync();
 722         return 0;
 723 }
 724 #endif
 725
 726 static void lcd_logo(void)
 727 {
 728         lcd_logo_plot(0, 0);
 729
 730 #ifdef CONFIG_LCD_INFO
 731         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 732         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 733         lcd_show_board_info();
 734 #endif /* CONFIG_LCD_INFO */
 735 }
 736
 737 #ifdef CONFIG_SPLASHIMAGE_GUARD
 738 static int on_splashimage(const char *name, const char *value, enum env_op op,
 739         int flags)
 740 {
 741         ulong addr;
 742         int aligned;
 743
 744         if (op == env_op_delete)
 745                 return 0;
 746
 747         addr = simple_strtoul(value, NULL, 16);
 748         /* See README.displaying-bmps */
 749         aligned = (addr % 4 == 2);
 750         if (!aligned) {
 751                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 752                 return -1;
 753         }
 754
 755         return 0;
 756 }
 757
 758 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 759 #endif
 760
 761 int lcd_get_pixel_width(void)
 762 {
 763         return panel_info.vl_col;
 764 }
 765
 766 int lcd_get_pixel_height(void)
 767 {
 768         return panel_info.vl_row;
 769 }