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 <fdt_support.h>
  24 #include <video_font.h>
  25
  26 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  27 #include <libfdt.h>
  28 #endif
  29
  30 #ifdef CONFIG_LCD_LOGO
  31 #include <bmp_logo.h>
  32 #include <bmp_logo_data.h>
  33 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  34 #error Default Color Map overlaps with Logo Color Map
  35 #endif
  36 #endif
  37
  38 #ifdef CONFIG_SANDBOX
  39 #include <asm/sdl.h>
  40 #endif
  41
  42 #ifndef CONFIG_LCD_ALIGNMENT
  43 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  44 #endif
  45
  46 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  47         (LCD_BPP != LCD_COLOR32)
  48 #error Unsupported LCD BPP.
  49 #endif
  50
  51 DECLARE_GLOBAL_DATA_PTR;
  52
  53 static int lcd_init(void *lcdbase);
  54 static void *lcd_logo(void);
  55 static void lcd_setfgcolor(int color);
  56 static void lcd_setbgcolor(int color);
  57
  58 static int lcd_color_fg;
  59 static int lcd_color_bg;
  60 int lcd_line_length;
  61 char lcd_is_enabled = 0;
  62 static void *lcd_base;                  /* Start of framebuffer memory  */
  63 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  64
  65 /* Flush LCD activity to the caches */
  66 void lcd_sync(void)
  67 {
  68         /*
  69          * flush_dcache_range() is declared in common.h but it seems that some
  70          * architectures do not actually implement it. Is there a way to find
  71          * out whether it exists? For now, ARM is safe.
  72          */
  73 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  74         int line_length;
  75
  76         if (lcd_flush_dcache)
  77                 flush_dcache_range((u32)lcd_base,
  78                         (u32)(lcd_base + lcd_get_size(&line_length)));
  79 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
  80         static ulong last_sync;
  81
  82         if (get_timer(last_sync) > 10) {
  83                 sandbox_sdl_sync(lcd_base);
  84                 last_sync = get_timer(0);
  85         }
  86 #endif
  87 }
  88
  89 void lcd_set_flush_dcache(int flush)
  90 {
  91         lcd_flush_dcache = (flush != 0);
  92 }
  93
  94 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  95 {
  96         lcd_putc(c);
  97 }
  98
  99 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 100 {
 101         lcd_puts(s);
 102 }
 103
 104 /* Small utility to check that you got the colours right */
 105 #ifdef LCD_TEST_PATTERN
 106
 107 #define N_BLK_VERT      2
 108 #define N_BLK_HOR       3
 109
 110 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 111         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 112         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 113 };
 114
 115 static void test_pattern(void)
 116 {
 117         ushort v_max  = panel_info.vl_row;
 118         ushort h_max  = panel_info.vl_col;
 119         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 120         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 121         ushort v, h;
 122         uchar *pix = (uchar *)lcd_base;
 123
 124         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 125                 h_max, v_max, h_step, v_step);
 126
 127         /* WARNING: Code silently assumes 8bit/pixel */
 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         short console_rows, console_cols;
 176         int bg_color;
 177 #if LCD_BPP == LCD_COLOR8
 178         /* Setting the palette */
 179         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 180         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 181         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 182         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 183         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 184         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 185         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 186         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 187         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 188 #endif
 189
 190 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 191         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 192         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 193         bg_color = CONSOLE_COLOR_WHITE;
 194 #else
 195         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 196         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 197         bg_color = CONSOLE_COLOR_BLACK;
 198 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 199
 200 #ifdef  LCD_TEST_PATTERN
 201         test_pattern();
 202 #else
 203         /* set framebuffer to background color */
 204 #if (LCD_BPP != LCD_COLOR32)
 205         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 206 #else
 207         u32 *ppix = lcd_base;
 208         u32 i;
 209         for (i = 0;
 210            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 211            i++) {
 212                 *ppix++ = bg_color;
 213         }
 214 #endif
 215 #endif
 216         /* Paint the logo and retrieve LCD base address */
 217         debug("[LCD] Drawing the logo...\n");
 218 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 219         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 220         console_rows /= VIDEO_FONT_HEIGHT;
 221 #else
 222         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 223 #endif
 224         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 225         lcd_init_console(lcd_base, console_rows, console_cols);
 226         lcd_init_console(lcd_logo(), console_rows, console_cols);
 227         lcd_sync();
 228 }
 229
 230 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 231                         char *const argv[])
 232 {
 233         lcd_clear();
 234         return 0;
 235 }
 236 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 237
 238 static int lcd_init(void *lcdbase)
 239 {
 240         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 241         lcd_ctrl_init(lcdbase);
 242
 243         /*
 244          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 245          * the 'lcdbase' argument and uses custom lcd base address
 246          * by setting up gd->fb_base. Check for this condition and fixup
 247          * 'lcd_base' address.
 248          */
 249         if (map_to_sysmem(lcdbase) != gd->fb_base)
 250                 lcd_base = map_sysmem(gd->fb_base, 0);
 251
 252         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 253
 254         lcd_get_size(&lcd_line_length);
 255         lcd_is_enabled = 1;
 256         lcd_clear();
 257         lcd_enable();
 258
 259         /* Initialize the console */
 260         lcd_set_col(0);
 261 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 262         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 263 #else
 264         lcd_set_row(1); /* leave 1 blank line below logo */
 265 #endif
 266
 267         return 0;
 268 }
 269
 270 /*
 271  * This is called early in the system initialization to grab memory
 272  * for the LCD controller.
 273  * Returns new address for monitor, after reserving LCD buffer memory
 274  *
 275  * Note that this is running from ROM, so no write access to global data.
 276  */
 277 ulong lcd_setmem(ulong addr)
 278 {
 279         ulong size;
 280         int line_length;
 281
 282         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 283                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 284
 285         size = lcd_get_size(&line_length);
 286
 287         /* Round up to nearest full page, or MMU section if defined */
 288         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 289         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 290
 291         /* Allocate pages for the frame buffer. */
 292         addr -= size;
 293
 294         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 295               size >> 10, addr);
 296
 297         return addr;
 298 }
 299
 300 static void lcd_setfgcolor(int color)
 301 {
 302         lcd_color_fg = color;
 303 }
 304
 305 int lcd_getfgcolor(void)
 306 {
 307         return lcd_color_fg;
 308 }
 309
 310 static void lcd_setbgcolor(int color)
 311 {
 312         lcd_color_bg = color;
 313 }
 314
 315 int lcd_getbgcolor(void)
 316 {
 317         return lcd_color_bg;
 318 }
 319
 320 #ifdef CONFIG_LCD_LOGO
 321 __weak void lcd_logo_set_cmap(void)
 322 {
 323         int i;
 324         ushort *cmap = configuration_get_cmap();
 325
 326         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 327                 *cmap++ = bmp_logo_palette[i];
 328 }
 329
 330 void lcd_logo_plot(int x, int y)
 331 {
 332         ushort i, j;
 333         uchar *bmap = &bmp_logo_bitmap[0];
 334         unsigned bpix = NBITS(panel_info.vl_bpix);
 335         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 336         ushort *fb16;
 337
 338         debug("Logo: width %d  height %d  colors %d\n",
 339               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 340
 341         if (bpix < 12) {
 342                 WATCHDOG_RESET();
 343                 lcd_logo_set_cmap();
 344                 WATCHDOG_RESET();
 345
 346                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 347                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 348                         bmap += BMP_LOGO_WIDTH;
 349                         fb += panel_info.vl_col;
 350                 }
 351         }
 352         else { /* true color mode */
 353                 u16 col16;
 354                 fb16 = (ushort *)fb;
 355                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 356                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 357                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 358                                 fb16[j] =
 359                                         ((col16 & 0x000F) << 1) |
 360                                         ((col16 & 0x00F0) << 3) |
 361                                         ((col16 & 0x0F00) << 4);
 362                                 }
 363                         bmap += BMP_LOGO_WIDTH;
 364                         fb16 += panel_info.vl_col;
 365                 }
 366         }
 367
 368         WATCHDOG_RESET();
 369         lcd_sync();
 370 }
 371 #else
 372 static inline void lcd_logo_plot(int x, int y) {}
 373 #endif /* CONFIG_LCD_LOGO */
 374
 375 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 376 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 377 #define BMP_ALIGN_CENTER        0x7FFF
 378
 379 static void splash_align_axis(int *axis, unsigned long panel_size,
 380                                         unsigned long picture_size)
 381 {
 382         unsigned long panel_picture_delta = panel_size - picture_size;
 383         unsigned long axis_alignment;
 384
 385         if (*axis == BMP_ALIGN_CENTER)
 386                 axis_alignment = panel_picture_delta / 2;
 387         else if (*axis < 0)
 388                 axis_alignment = panel_picture_delta + *axis + 1;
 389         else
 390                 return;
 391
 392         *axis = max(0, (int)axis_alignment);
 393 }
 394 #endif
 395
 396 #ifdef CONFIG_LCD_BMP_RLE8
 397 #define BMP_RLE8_ESCAPE         0
 398 #define BMP_RLE8_EOL            0
 399 #define BMP_RLE8_EOBMP          1
 400 #define BMP_RLE8_DELTA          2
 401
 402 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 403                                   int cnt)
 404 {
 405         while (cnt > 0) {
 406                 *(*fbp)++ = cmap[*bmap++];
 407                 cnt--;
 408         }
 409 }
 410
 411 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 412 {
 413         ushort *fb = *fbp;
 414         int cnt_8copy = cnt >> 3;
 415
 416         cnt -= cnt_8copy << 3;
 417         while (cnt_8copy > 0) {
 418                 *fb++ = c;
 419                 *fb++ = c;
 420                 *fb++ = c;
 421                 *fb++ = c;
 422                 *fb++ = c;
 423                 *fb++ = c;
 424                 *fb++ = c;
 425                 *fb++ = c;
 426                 cnt_8copy--;
 427         }
 428         while (cnt > 0) {
 429                 *fb++ = c;
 430                 cnt--;
 431         }
 432         *fbp = fb;
 433 }
 434
 435 /*
 436  * Do not call this function directly, must be called from lcd_display_bitmap.
 437  */
 438 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 439                                     int x_off, int y_off)
 440 {
 441         uchar *bmap;
 442         ulong width, height;
 443         ulong cnt, runlen;
 444         int x, y;
 445         int decode = 1;
 446
 447         width = get_unaligned_le32(&bmp->header.width);
 448         height = get_unaligned_le32(&bmp->header.height);
 449         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 450
 451         x = 0;
 452         y = height - 1;
 453
 454         while (decode) {
 455                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 456                         switch (bmap[1]) {
 457                         case BMP_RLE8_EOL:
 458                                 /* end of line */
 459                                 bmap += 2;
 460                                 x = 0;
 461                                 y--;
 462                                 /* 16bpix, 2-byte per pixel, width should *2 */
 463                                 fb -= (width * 2 + lcd_line_length);
 464                                 break;
 465                         case BMP_RLE8_EOBMP:
 466                                 /* end of bitmap */
 467                                 decode = 0;
 468                                 break;
 469                         case BMP_RLE8_DELTA:
 470                                 /* delta run */
 471                                 x += bmap[2];
 472                                 y -= bmap[3];
 473                                 /* 16bpix, 2-byte per pixel, x should *2 */
 474                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 475                                         * lcd_line_length + (x + x_off) * 2);
 476                                 bmap += 4;
 477                                 break;
 478                         default:
 479                                 /* unencoded run */
 480                                 runlen = bmap[1];
 481                                 bmap += 2;
 482                                 if (y < height) {
 483                                         if (x < width) {
 484                                                 if (x + runlen > width)
 485                                                         cnt = width - x;
 486                                                 else
 487                                                         cnt = runlen;
 488                                                 draw_unencoded_bitmap(
 489                                                         (ushort **)&fb,
 490                                                         bmap, cmap, cnt);
 491                                         }
 492                                         x += runlen;
 493                                 }
 494                                 bmap += runlen;
 495                                 if (runlen & 1)
 496                                         bmap++;
 497                         }
 498                 } else {
 499                         /* encoded run */
 500                         if (y < height) {
 501                                 runlen = bmap[0];
 502                                 if (x < width) {
 503                                         /* aggregate the same code */
 504                                         while (bmap[0] == 0xff &&
 505                                                bmap[2] != BMP_RLE8_ESCAPE &&
 506                                                bmap[1] == bmap[3]) {
 507                                                 runlen += bmap[2];
 508                                                 bmap += 2;
 509                                         }
 510                                         if (x + runlen > width)
 511                                                 cnt = width - x;
 512                                         else
 513                                                 cnt = runlen;
 514                                         draw_encoded_bitmap((ushort **)&fb,
 515                                                 cmap[bmap[1]], cnt);
 516                                 }
 517                                 x += runlen;
 518                         }
 519                         bmap += 2;
 520                 }
 521         }
 522 }
 523 #endif
 524
 525 __weak void fb_put_byte(uchar **fb, uchar **from)
 526 {
 527         *(*fb)++ = *(*from)++;
 528 }
 529
 530 #if defined(CONFIG_BMP_16BPP)
 531 __weak void fb_put_word(uchar **fb, uchar **from)
 532 {
 533         *(*fb)++ = *(*from)++;
 534         *(*fb)++ = *(*from)++;
 535 }
 536 #endif /* CONFIG_BMP_16BPP */
 537
 538 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 539 {
 540         int i;
 541         bmp_color_table_entry_t cte;
 542         ushort *cmap = configuration_get_cmap();
 543
 544         for (i = 0; i < colors; ++i) {
 545                 cte = bmp->color_table[i];
 546                 *cmap = (((cte.red)   << 8) & 0xf800) |
 547                         (((cte.green) << 3) & 0x07e0) |
 548                         (((cte.blue)  >> 3) & 0x001f);
 549 #if defined(CONFIG_MPC823)
 550                 cmap--;
 551 #else
 552                 cmap++;
 553 #endif
 554         }
 555 }
 556
 557 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 558 {
 559         ushort *cmap_base = NULL;
 560         ushort i, j;
 561         uchar *fb;
 562         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 563         uchar *bmap;
 564         ushort padded_width;
 565         unsigned long width, height, byte_width;
 566         unsigned long pwidth = panel_info.vl_col;
 567         unsigned colors, bpix, bmp_bpix;
 568
 569         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 570                 bmp->header.signature[1] == 'M')) {
 571                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 572
 573                 return 1;
 574         }
 575
 576         width = get_unaligned_le32(&bmp->header.width);
 577         height = get_unaligned_le32(&bmp->header.height);
 578         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 579
 580         colors = 1 << bmp_bpix;
 581
 582         bpix = NBITS(panel_info.vl_bpix);
 583
 584         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 585                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 586                         bpix, bmp_bpix);
 587
 588                 return 1;
 589         }
 590
 591         /*
 592          * We support displaying 8bpp BMPs on 16bpp LCDs
 593          * and displaying 24bpp BMPs on 32bpp LCDs
 594          * */
 595         if (bpix != bmp_bpix &&
 596             !(bmp_bpix == 8 && bpix == 16) &&
 597             !(bmp_bpix == 24 && bpix == 32)) {
 598                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 599                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 600                 return 1;
 601         }
 602
 603         debug("Display-bmp: %d x %d  with %d colors\n",
 604                 (int)width, (int)height, (int)colors);
 605
 606         if (bmp_bpix == 8)
 607                 lcd_set_cmap(bmp, colors);
 608
 609         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 610
 611 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 612         splash_align_axis(&x, pwidth, width);
 613         splash_align_axis(&y, panel_info.vl_row, height);
 614 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 615
 616         if ((x + width) > pwidth)
 617                 width = pwidth - x;
 618         if ((y + height) > panel_info.vl_row)
 619                 height = panel_info.vl_row - y;
 620
 621         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 622         fb   = (uchar *)(lcd_base +
 623                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 624
 625         switch (bmp_bpix) {
 626         case 1:
 627         case 8: {
 628                 cmap_base = configuration_get_cmap();
 629 #ifdef CONFIG_LCD_BMP_RLE8
 630                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 631                 if (compression == BMP_BI_RLE8) {
 632                         if (bpix != 16) {
 633                                 /* TODO implement render code for bpix != 16 */
 634                                 printf("Error: only support 16 bpix");
 635                                 return 1;
 636                         }
 637                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 638                         break;
 639                 }
 640 #endif
 641
 642                 if (bpix != 16)
 643                         byte_width = width;
 644                 else
 645                         byte_width = width * 2;
 646
 647                 for (i = 0; i < height; ++i) {
 648                         WATCHDOG_RESET();
 649                         for (j = 0; j < width; j++) {
 650                                 if (bpix != 16) {
 651                                         fb_put_byte(&fb, &bmap);
 652                                 } else {
 653                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 654                                         fb += sizeof(uint16_t) / sizeof(*fb);
 655                                 }
 656                         }
 657                         bmap += (padded_width - width);
 658                         fb -= byte_width + lcd_line_length;
 659                 }
 660                 break;
 661         }
 662 #if defined(CONFIG_BMP_16BPP)
 663         case 16:
 664                 for (i = 0; i < height; ++i) {
 665                         WATCHDOG_RESET();
 666                         for (j = 0; j < width; j++)
 667                                 fb_put_word(&fb, &bmap);
 668
 669                         bmap += (padded_width - width) * 2;
 670                         fb -= width * 2 + lcd_line_length;
 671                 }
 672                 break;
 673 #endif /* CONFIG_BMP_16BPP */
 674 #if defined(CONFIG_BMP_24BMP)
 675         case 24:
 676                 for (i = 0; i < height; ++i) {
 677                         for (j = 0; j < width; j++) {
 678                                 *(fb++) = *(bmap++);
 679                                 *(fb++) = *(bmap++);
 680                                 *(fb++) = *(bmap++);
 681                                 *(fb++) = 0;
 682                         }
 683                         fb -= lcd_line_length + width * (bpix / 8);
 684                 }
 685                 break;
 686 #endif /* CONFIG_BMP_24BMP */
 687 #if defined(CONFIG_BMP_32BPP)
 688         case 32:
 689                 for (i = 0; i < height; ++i) {
 690                         for (j = 0; j < width; j++) {
 691                                 *(fb++) = *(bmap++);
 692                                 *(fb++) = *(bmap++);
 693                                 *(fb++) = *(bmap++);
 694                                 *(fb++) = *(bmap++);
 695                         }
 696                         fb -= lcd_line_length + width * (bpix / 8);
 697                 }
 698                 break;
 699 #endif /* CONFIG_BMP_32BPP */
 700         default:
 701                 break;
 702         };
 703
 704         lcd_sync();
 705         return 0;
 706 }
 707 #endif
 708
 709 static void *lcd_logo(void)
 710 {
 711 #ifdef CONFIG_SPLASH_SCREEN
 712         char *s;
 713         ulong addr;
 714         static int do_splash = 1;
 715
 716         if (do_splash && (s = getenv("splashimage")) != NULL) {
 717                 int x = 0, y = 0;
 718                 do_splash = 0;
 719
 720                 if (splash_screen_prepare())
 721                         return (void *)lcd_base;
 722
 723                 addr = simple_strtoul (s, NULL, 16);
 724
 725                 splash_get_pos(&x, &y);
 726
 727                 if (bmp_display(addr, x, y) == 0)
 728                         return (void *)lcd_base;
 729         }
 730 #endif /* CONFIG_SPLASH_SCREEN */
 731
 732         lcd_logo_plot(0, 0);
 733
 734 #ifdef CONFIG_LCD_INFO
 735         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 736         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 737         lcd_show_board_info();
 738 #endif /* CONFIG_LCD_INFO */
 739
 740 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 741         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
 742 #else
 743         return (void *)lcd_base;
 744 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
 745 }
 746
 747 #ifdef CONFIG_SPLASHIMAGE_GUARD
 748 static int on_splashimage(const char *name, const char *value, enum env_op op,
 749         int flags)
 750 {
 751         ulong addr;
 752         int aligned;
 753
 754         if (op == env_op_delete)
 755                 return 0;
 756
 757         addr = simple_strtoul(value, NULL, 16);
 758         /* See README.displaying-bmps */
 759         aligned = (addr % 4 == 2);
 760         if (!aligned) {
 761                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 762                 return -1;
 763         }
 764
 765         return 0;
 766 }
 767
 768 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 769 #endif
 770
 771 int lcd_get_pixel_width(void)
 772 {
 773         return panel_info.vl_col;
 774 }
 775
 776 int lcd_get_pixel_height(void)
 777 {
 778         return panel_info.vl_row;
 779 }
 780
 781 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 782 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 783 {
 784 #if LCD_BPP == LCD_COLOR16
 785         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 786                                        panel_info.vl_col, panel_info.vl_row,
 787                                        panel_info.vl_col * 2, "r5g6b5");
 788 #else
 789         return -1;
 790 #endif
 791 }
 792
 793 int lcd_dt_simplefb_add_node(void *blob)
 794 {
 795         static const char compat[] = "simple-framebuffer";
 796         static const char disabled[] = "disabled";
 797         int off, ret;
 798
 799         off = fdt_add_subnode(blob, 0, "framebuffer");
 800         if (off < 0)
 801                 return -1;
 802
 803         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 804         if (ret < 0)
 805                 return -1;
 806
 807         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
 808         if (ret < 0)
 809                 return -1;
 810
 811         return lcd_dt_simplefb_configure_node(blob, off);
 812 }
 813
 814 int lcd_dt_simplefb_enable_existing_node(void *blob)
 815 {
 816         int off;
 817
 818         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
 819         if (off < 0)
 820                 return -1;
 821
 822         return lcd_dt_simplefb_configure_node(blob, off);
 823 }
 824 #endif