common/lcd.c

   1 /*
   2  * Common LCD routines for supported CPUs
   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 /************************************************************************/
  11 /* ** HEADER FILES                                                      */
  12 /************************************************************************/
  13
  14 /* #define DEBUG */
  15
  16 #include <config.h>
  17 #include <common.h>
  18 #include <command.h>
  19 #include <stdarg.h>
  20 #include <search.h>
  21 #include <env_callback.h>
  22 #include <linux/types.h>
  23 #include <stdio_dev.h>
  24 #if defined(CONFIG_POST)
  25 #include <post.h>
  26 #endif
  27 #include <lcd.h>
  28 #include <watchdog.h>
  29 #include <asm/unaligned.h>
  30 #include <splash.h>
  31 #include <asm/io.h>
  32 #include <asm/unaligned.h>
  33 #include <fdt_support.h>
  34
  35 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  36         defined(CONFIG_CPU_MONAHANS)
  37 #include <asm/byteorder.h>
  38 #endif
  39
  40 #if defined(CONFIG_MPC823)
  41 #include <lcdvideo.h>
  42 #endif
  43
  44 #if defined(CONFIG_ATMEL_LCD)
  45 #include <atmel_lcdc.h>
  46 #endif
  47
  48 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  49 #include <libfdt.h>
  50 #endif
  51
  52 /************************************************************************/
  53 /* ** FONT DATA                                                         */
  54 /************************************************************************/
  55 #include <video_font.h>         /* Get font data, width and height      */
  56
  57 /************************************************************************/
  58 /* ** LOGO DATA                                                         */
  59 /************************************************************************/
  60 #ifdef CONFIG_LCD_LOGO
  61 # include <bmp_logo.h>          /* Get logo data, width and height      */
  62 # include <bmp_logo_data.h>
  63 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  64 #  error Default Color Map overlaps with Logo Color Map
  65 # endif
  66 #endif
  67
  68 #ifdef CONFIG_SANDBOX
  69 #include <asm/sdl.h>
  70 #endif
  71
  72 #ifndef CONFIG_LCD_ALIGNMENT
  73 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  74 #endif
  75
  76 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  77         (LCD_BPP != LCD_COLOR32)
  78 # error Unsupported LCD BPP.
  79 #endif
  80
  81 DECLARE_GLOBAL_DATA_PTR;
  82
  83 static int lcd_init(void *lcdbase);
  84
  85 static void *lcd_logo(void);
  86
  87 static void lcd_setfgcolor(int color);
  88 static void lcd_setbgcolor(int color);
  89
  90 static int lcd_color_fg;
  91 static int lcd_color_bg;
  92 int lcd_line_length;
  93
  94 char lcd_is_enabled = 0;
  95
  96 static void *lcd_base;                  /* Start of framebuffer memory  */
  97
  98 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  99
 100 /************************************************************************/
 101
 102 /* Flush LCD activity to the caches */
 103 void lcd_sync(void)
 104 {
 105         /*
 106          * flush_dcache_range() is declared in common.h but it seems that some
 107          * architectures do not actually implement it. Is there a way to find
 108          * out whether it exists? For now, ARM is safe.
 109          */
 110 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 111         int line_length;
 112
 113         if (lcd_flush_dcache)
 114                 flush_dcache_range((u32)lcd_base,
 115                         (u32)(lcd_base + lcd_get_size(&line_length)));
 116 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 117         static ulong last_sync;
 118
 119         if (get_timer(last_sync) > 10) {
 120                 sandbox_sdl_sync(lcd_base);
 121                 last_sync = get_timer(0);
 122         }
 123 #endif
 124 }
 125
 126 void lcd_set_flush_dcache(int flush)
 127 {
 128         lcd_flush_dcache = (flush != 0);
 129 }
 130
 131 /*----------------------------------------------------------------------*/
 132
 133 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 134 {
 135         lcd_putc(c);
 136 }
 137
 138 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 139 {
 140         lcd_puts(s);
 141 }
 142
 143 /************************************************************************/
 144 /**  Small utility to check that you got the colours right              */
 145 /************************************************************************/
 146 #ifdef LCD_TEST_PATTERN
 147
 148 #define N_BLK_VERT      2
 149 #define N_BLK_HOR       3
 150
 151 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 152         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 153         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 154 };
 155
 156 static void test_pattern(void)
 157 {
 158         ushort v_max  = panel_info.vl_row;
 159         ushort h_max  = panel_info.vl_col;
 160         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 161         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 162         ushort v, h;
 163         uchar *pix = (uchar *)lcd_base;
 164
 165         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 166                 h_max, v_max, h_step, v_step);
 167
 168         /* WARNING: Code silently assumes 8bit/pixel */
 169         for (v = 0; v < v_max; ++v) {
 170                 uchar iy = v / v_step;
 171                 for (h = 0; h < h_max; ++h) {
 172                         uchar ix = N_BLK_HOR * iy + h / h_step;
 173                         *pix++ = test_colors[ix];
 174                 }
 175         }
 176 }
 177 #endif /* LCD_TEST_PATTERN */
 178
 179
 180 /************************************************************************/
 181 /* ** GENERIC Initialization Routines                                   */
 182 /************************************************************************/
 183 /*
 184  * With most lcd drivers the line length is set up
 185  * by calculating it from panel_info parameters. Some
 186  * drivers need to calculate the line length differently,
 187  * so make the function weak to allow overriding it.
 188  */
 189 __weak int lcd_get_size(int *line_length)
 190 {
 191         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 192         return *line_length * panel_info.vl_row;
 193 }
 194
 195 int drv_lcd_init(void)
 196 {
 197         struct stdio_dev lcddev;
 198         int rc;
 199
 200         lcd_base = map_sysmem(gd->fb_base, 0);
 201
 202         lcd_init(lcd_base);             /* LCD initialization */
 203
 204         /* Device initialization */
 205         memset(&lcddev, 0, sizeof(lcddev));
 206
 207         strcpy(lcddev.name, "lcd");
 208         lcddev.ext   = 0;                       /* No extensions */
 209         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 210         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 211         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 212
 213         rc = stdio_register(&lcddev);
 214
 215         return (rc == 0) ? 1 : rc;
 216 }
 217
 218 /*----------------------------------------------------------------------*/
 219 void lcd_clear(void)
 220 {
 221         short console_rows, console_cols;
 222         int bg_color;
 223 #if LCD_BPP == LCD_COLOR8
 224         /* Setting the palette */
 225         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 226         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 227         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 228         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 229         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 230         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 231         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 232         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 233         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 234 #endif
 235
 236 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 237         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 238         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 239         bg_color = CONSOLE_COLOR_WHITE;
 240 #else
 241         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 242         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 243         bg_color = CONSOLE_COLOR_BLACK;
 244 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 245
 246 #ifdef  LCD_TEST_PATTERN
 247         test_pattern();
 248 #else
 249         /* set framebuffer to background color */
 250 #if (LCD_BPP != LCD_COLOR32)
 251         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 252 #else
 253         u32 *ppix = lcd_base;
 254         u32 i;
 255         for (i = 0;
 256            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 257            i++) {
 258                 *ppix++ = bg_color;
 259         }
 260 #endif
 261 #endif
 262         /* Paint the logo and retrieve LCD base address */
 263         debug("[LCD] Drawing the logo...\n");
 264 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 265         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 266         console_rows /= VIDEO_FONT_HEIGHT;
 267 #else
 268         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 269 #endif
 270         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 271         lcd_init_console(lcd_base, console_rows, console_cols);
 272         lcd_init_console(lcd_logo(), console_rows, console_cols);
 273         lcd_sync();
 274 }
 275
 276 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 277                         char *const argv[])
 278 {
 279         lcd_clear();
 280         return 0;
 281 }
 282
 283 U_BOOT_CMD(
 284         cls,    1,      1,      do_lcd_clear,
 285         "clear screen",
 286         ""
 287 );
 288
 289 /*----------------------------------------------------------------------*/
 290
 291 static int lcd_init(void *lcdbase)
 292 {
 293         /* Initialize the lcd controller */
 294         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 295
 296         lcd_ctrl_init(lcdbase);
 297
 298         /*
 299          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 300          * the 'lcdbase' argument and uses custom lcd base address
 301          * by setting up gd->fb_base. Check for this condition and fixup
 302          * 'lcd_base' address.
 303          */
 304         if (map_to_sysmem(lcdbase) != gd->fb_base)
 305                 lcd_base = map_sysmem(gd->fb_base, 0);
 306
 307         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 308
 309         lcd_get_size(&lcd_line_length);
 310         lcd_is_enabled = 1;
 311         lcd_clear();
 312         lcd_enable();
 313
 314         /* Initialize the console */
 315         lcd_set_col(0);
 316 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 317         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 318 #else
 319         lcd_set_row(1); /* leave 1 blank line below logo */
 320 #endif
 321
 322         return 0;
 323 }
 324
 325
 326 /************************************************************************/
 327 /* ** ROM capable initialization part - needed to reserve FB memory     */
 328 /************************************************************************/
 329 /*
 330  * This is called early in the system initialization to grab memory
 331  * for the LCD controller.
 332  * Returns new address for monitor, after reserving LCD buffer memory
 333  *
 334  * Note that this is running from ROM, so no write access to global data.
 335  */
 336 ulong lcd_setmem(ulong addr)
 337 {
 338         ulong size;
 339         int line_length;
 340
 341         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 342                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 343
 344         size = lcd_get_size(&line_length);
 345
 346         /* Round up to nearest full page, or MMU section if defined */
 347         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 348         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 349
 350         /* Allocate pages for the frame buffer. */
 351         addr -= size;
 352
 353         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 354               size >> 10, addr);
 355
 356         return addr;
 357 }
 358
 359 /*----------------------------------------------------------------------*/
 360
 361 static void lcd_setfgcolor(int color)
 362 {
 363         lcd_color_fg = color;
 364 }
 365
 366 int lcd_getfgcolor(void)
 367 {
 368         return lcd_color_fg;
 369 }
 370
 371 /*----------------------------------------------------------------------*/
 372
 373 static void lcd_setbgcolor(int color)
 374 {
 375         lcd_color_bg = color;
 376 }
 377
 378 int lcd_getbgcolor(void)
 379 {
 380         return lcd_color_bg;
 381 }
 382
 383 /************************************************************************/
 384 /* ** Chipset depending Bitmap / Logo stuff...                          */
 385 /************************************************************************/
 386
 387 #ifdef CONFIG_LCD_LOGO
 388 __weak void lcd_logo_set_cmap(void)
 389 {
 390         int i;
 391         ushort *cmap = configuration_get_cmap();
 392
 393         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 394                 *cmap++ = bmp_logo_palette[i];
 395 }
 396
 397 void bitmap_plot(int x, int y)
 398 {
 399         ushort i, j;
 400         uchar *bmap;
 401         uchar *fb;
 402         ushort *fb16;
 403         unsigned bpix = NBITS(panel_info.vl_bpix);
 404
 405         debug("Logo: width %d  height %d  colors %d\n",
 406               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 407
 408         bmap = &bmp_logo_bitmap[0];
 409         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 410
 411         if (bpix < 12) {
 412                 WATCHDOG_RESET();
 413                 lcd_logo_set_cmap();
 414                 WATCHDOG_RESET();
 415
 416                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 417                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 418                         bmap += BMP_LOGO_WIDTH;
 419                         fb += panel_info.vl_col;
 420                 }
 421         }
 422         else { /* true color mode */
 423                 u16 col16;
 424                 fb16 = (ushort *)fb;
 425                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 426                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 427                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 428                                 fb16[j] =
 429                                         ((col16 & 0x000F) << 1) |
 430                                         ((col16 & 0x00F0) << 3) |
 431                                         ((col16 & 0x0F00) << 4);
 432                                 }
 433                         bmap += BMP_LOGO_WIDTH;
 434                         fb16 += panel_info.vl_col;
 435                 }
 436         }
 437
 438         WATCHDOG_RESET();
 439         lcd_sync();
 440 }
 441 #else
 442 static inline void bitmap_plot(int x, int y) {}
 443 #endif /* CONFIG_LCD_LOGO */
 444
 445 /*----------------------------------------------------------------------*/
 446 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 447 /*
 448  * Display the BMP file located at address bmp_image.
 449  * Only uncompressed.
 450  */
 451
 452 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 453 #define BMP_ALIGN_CENTER        0x7FFF
 454
 455 static void splash_align_axis(int *axis, unsigned long panel_size,
 456                                         unsigned long picture_size)
 457 {
 458         unsigned long panel_picture_delta = panel_size - picture_size;
 459         unsigned long axis_alignment;
 460
 461         if (*axis == BMP_ALIGN_CENTER)
 462                 axis_alignment = panel_picture_delta / 2;
 463         else if (*axis < 0)
 464                 axis_alignment = panel_picture_delta + *axis + 1;
 465         else
 466                 return;
 467
 468         *axis = max(0, (int)axis_alignment);
 469 }
 470 #endif
 471
 472
 473 #ifdef CONFIG_LCD_BMP_RLE8
 474
 475 #define BMP_RLE8_ESCAPE         0
 476 #define BMP_RLE8_EOL            0
 477 #define BMP_RLE8_EOBMP          1
 478 #define BMP_RLE8_DELTA          2
 479
 480 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 481                                   int cnt)
 482 {
 483         while (cnt > 0) {
 484                 *(*fbp)++ = cmap[*bmap++];
 485                 cnt--;
 486         }
 487 }
 488
 489 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 490 {
 491         ushort *fb = *fbp;
 492         int cnt_8copy = cnt >> 3;
 493
 494         cnt -= cnt_8copy << 3;
 495         while (cnt_8copy > 0) {
 496                 *fb++ = c;
 497                 *fb++ = c;
 498                 *fb++ = c;
 499                 *fb++ = c;
 500                 *fb++ = c;
 501                 *fb++ = c;
 502                 *fb++ = c;
 503                 *fb++ = c;
 504                 cnt_8copy--;
 505         }
 506         while (cnt > 0) {
 507                 *fb++ = c;
 508                 cnt--;
 509         }
 510         *fbp = fb;
 511 }
 512
 513 /*
 514  * Do not call this function directly, must be called from lcd_display_bitmap.
 515  */
 516 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 517                                     int x_off, int y_off)
 518 {
 519         uchar *bmap;
 520         ulong width, height;
 521         ulong cnt, runlen;
 522         int x, y;
 523         int decode = 1;
 524
 525         width = get_unaligned_le32(&bmp->header.width);
 526         height = get_unaligned_le32(&bmp->header.height);
 527         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 528
 529         x = 0;
 530         y = height - 1;
 531
 532         while (decode) {
 533                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 534                         switch (bmap[1]) {
 535                         case BMP_RLE8_EOL:
 536                                 /* end of line */
 537                                 bmap += 2;
 538                                 x = 0;
 539                                 y--;
 540                                 /* 16bpix, 2-byte per pixel, width should *2 */
 541                                 fb -= (width * 2 + lcd_line_length);
 542                                 break;
 543                         case BMP_RLE8_EOBMP:
 544                                 /* end of bitmap */
 545                                 decode = 0;
 546                                 break;
 547                         case BMP_RLE8_DELTA:
 548                                 /* delta run */
 549                                 x += bmap[2];
 550                                 y -= bmap[3];
 551                                 /* 16bpix, 2-byte per pixel, x should *2 */
 552                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 553                                         * lcd_line_length + (x + x_off) * 2);
 554                                 bmap += 4;
 555                                 break;
 556                         default:
 557                                 /* unencoded run */
 558                                 runlen = bmap[1];
 559                                 bmap += 2;
 560                                 if (y < height) {
 561                                         if (x < width) {
 562                                                 if (x + runlen > width)
 563                                                         cnt = width - x;
 564                                                 else
 565                                                         cnt = runlen;
 566                                                 draw_unencoded_bitmap(
 567                                                         (ushort **)&fb,
 568                                                         bmap, cmap, cnt);
 569                                         }
 570                                         x += runlen;
 571                                 }
 572                                 bmap += runlen;
 573                                 if (runlen & 1)
 574                                         bmap++;
 575                         }
 576                 } else {
 577                         /* encoded run */
 578                         if (y < height) {
 579                                 runlen = bmap[0];
 580                                 if (x < width) {
 581                                         /* aggregate the same code */
 582                                         while (bmap[0] == 0xff &&
 583                                                bmap[2] != BMP_RLE8_ESCAPE &&
 584                                                bmap[1] == bmap[3]) {
 585                                                 runlen += bmap[2];
 586                                                 bmap += 2;
 587                                         }
 588                                         if (x + runlen > width)
 589                                                 cnt = width - x;
 590                                         else
 591                                                 cnt = runlen;
 592                                         draw_encoded_bitmap((ushort **)&fb,
 593                                                 cmap[bmap[1]], cnt);
 594                                 }
 595                                 x += runlen;
 596                         }
 597                         bmap += 2;
 598                 }
 599         }
 600 }
 601 #endif
 602
 603 __weak void fb_put_byte(uchar **fb, uchar **from)
 604 {
 605         *(*fb)++ = *(*from)++;
 606 }
 607
 608 #if defined(CONFIG_BMP_16BPP)
 609 __weak void fb_put_word(uchar **fb, uchar **from)
 610 {
 611         *(*fb)++ = *(*from)++;
 612         *(*fb)++ = *(*from)++;
 613 }
 614 #endif /* CONFIG_BMP_16BPP */
 615
 616 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 617 {
 618         ushort *cmap = NULL;
 619         ushort *cmap_base = NULL;
 620         ushort i, j;
 621         uchar *fb;
 622         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 623         uchar *bmap;
 624         ushort padded_width;
 625         unsigned long width, height, byte_width;
 626         unsigned long pwidth = panel_info.vl_col;
 627         unsigned colors, bpix, bmp_bpix;
 628
 629         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 630                 bmp->header.signature[1] == 'M')) {
 631                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 632
 633                 return 1;
 634         }
 635
 636         width = get_unaligned_le32(&bmp->header.width);
 637         height = get_unaligned_le32(&bmp->header.height);
 638         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 639
 640         colors = 1 << bmp_bpix;
 641
 642         bpix = NBITS(panel_info.vl_bpix);
 643
 644         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 645                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 646                         bpix, bmp_bpix);
 647
 648                 return 1;
 649         }
 650
 651         /*
 652          * We support displaying 8bpp BMPs on 16bpp LCDs
 653          * and displaying 24bpp BMPs on 32bpp LCDs
 654          * */
 655         if (bpix != bmp_bpix &&
 656             !(bmp_bpix == 8 && bpix == 16) &&
 657             !(bmp_bpix == 24 && bpix == 32)) {
 658                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 659                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 660                 return 1;
 661         }
 662
 663         debug("Display-bmp: %d x %d  with %d colors\n",
 664                 (int)width, (int)height, (int)colors);
 665
 666         if (bmp_bpix == 8) {
 667                 cmap = configuration_get_cmap();
 668                 cmap_base = cmap;
 669
 670                 /* Set color map */
 671                 for (i = 0; i < colors; ++i) {
 672                         bmp_color_table_entry_t cte = bmp->color_table[i];
 673 #if !defined(CONFIG_ATMEL_LCD)
 674                         ushort colreg =
 675                                 ( ((cte.red)   << 8) & 0xf800) |
 676                                 ( ((cte.green) << 3) & 0x07e0) |
 677                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 678                         *cmap = colreg;
 679 #if defined(CONFIG_MPC823)
 680                         cmap--;
 681 #else
 682                         cmap++;
 683 #endif
 684 #else /* CONFIG_ATMEL_LCD */
 685                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 686 #endif
 687                 }
 688         }
 689
 690         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 691
 692 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 693         splash_align_axis(&x, pwidth, width);
 694         splash_align_axis(&y, panel_info.vl_row, height);
 695 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 696
 697         if ((x + width) > pwidth)
 698                 width = pwidth - x;
 699         if ((y + height) > panel_info.vl_row)
 700                 height = panel_info.vl_row - y;
 701
 702         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 703         fb   = (uchar *)(lcd_base +
 704                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 705
 706         switch (bmp_bpix) {
 707         case 1: /* pass through */
 708         case 8: {
 709 #ifdef CONFIG_LCD_BMP_RLE8
 710                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 711                 if (compression == BMP_BI_RLE8) {
 712                         if (bpix != 16) {
 713                                 /* TODO implement render code for bpix != 16 */
 714                                 printf("Error: only support 16 bpix");
 715                                 return 1;
 716                         }
 717                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 718                         break;
 719                 }
 720 #endif
 721
 722                 if (bpix != 16)
 723                         byte_width = width;
 724                 else
 725                         byte_width = width * 2;
 726
 727                 for (i = 0; i < height; ++i) {
 728                         WATCHDOG_RESET();
 729                         for (j = 0; j < width; j++) {
 730                                 if (bpix != 16) {
 731                                         fb_put_byte(&fb, &bmap);
 732                                 } else {
 733                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 734                                         fb += sizeof(uint16_t) / sizeof(*fb);
 735                                 }
 736                         }
 737                         bmap += (padded_width - width);
 738                         fb -= byte_width + lcd_line_length;
 739                 }
 740                 break;
 741         }
 742 #if defined(CONFIG_BMP_16BPP)
 743         case 16:
 744                 for (i = 0; i < height; ++i) {
 745                         WATCHDOG_RESET();
 746                         for (j = 0; j < width; j++)
 747                                 fb_put_word(&fb, &bmap);
 748
 749                         bmap += (padded_width - width) * 2;
 750                         fb -= width * 2 + lcd_line_length;
 751                 }
 752                 break;
 753 #endif /* CONFIG_BMP_16BPP */
 754 #if defined(CONFIG_BMP_24BMP)
 755         case 24:
 756                 for (i = 0; i < height; ++i) {
 757                         for (j = 0; j < width; j++) {
 758                                 *(fb++) = *(bmap++);
 759                                 *(fb++) = *(bmap++);
 760                                 *(fb++) = *(bmap++);
 761                                 *(fb++) = 0;
 762                         }
 763                         fb -= lcd_line_length + width * (bpix / 8);
 764                 }
 765                 break;
 766 #endif /* CONFIG_BMP_24BMP */
 767 #if defined(CONFIG_BMP_32BPP)
 768         case 32:
 769                 for (i = 0; i < height; ++i) {
 770                         for (j = 0; j < width; j++) {
 771                                 *(fb++) = *(bmap++);
 772                                 *(fb++) = *(bmap++);
 773                                 *(fb++) = *(bmap++);
 774                                 *(fb++) = *(bmap++);
 775                         }
 776                         fb -= lcd_line_length + width * (bpix / 8);
 777                 }
 778                 break;
 779 #endif /* CONFIG_BMP_32BPP */
 780         default:
 781                 break;
 782         };
 783
 784         lcd_sync();
 785         return 0;
 786 }
 787 #endif
 788
 789 static void *lcd_logo(void)
 790 {
 791 #ifdef CONFIG_SPLASH_SCREEN
 792         char *s;
 793         ulong addr;
 794         static int do_splash = 1;
 795
 796         if (do_splash && (s = getenv("splashimage")) != NULL) {
 797                 int x = 0, y = 0;
 798                 do_splash = 0;
 799
 800                 if (splash_screen_prepare())
 801                         return (void *)lcd_base;
 802
 803                 addr = simple_strtoul (s, NULL, 16);
 804
 805                 splash_get_pos(&x, &y);
 806
 807                 if (bmp_display(addr, x, y) == 0)
 808                         return (void *)lcd_base;
 809         }
 810 #endif /* CONFIG_SPLASH_SCREEN */
 811
 812         bitmap_plot(0, 0);
 813
 814 #ifdef CONFIG_LCD_INFO
 815         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 816         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 817         lcd_show_board_info();
 818 #endif /* CONFIG_LCD_INFO */
 819
 820 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 821         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
 822 #else
 823         return (void *)lcd_base;
 824 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
 825 }
 826
 827 #ifdef CONFIG_SPLASHIMAGE_GUARD
 828 static int on_splashimage(const char *name, const char *value, enum env_op op,
 829         int flags)
 830 {
 831         ulong addr;
 832         int aligned;
 833
 834         if (op == env_op_delete)
 835                 return 0;
 836
 837         addr = simple_strtoul(value, NULL, 16);
 838         /* See README.displaying-bmps */
 839         aligned = (addr % 4 == 2);
 840         if (!aligned) {
 841                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 842                 return -1;
 843         }
 844
 845         return 0;
 846 }
 847
 848 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 849 #endif
 850
 851 int lcd_get_pixel_width(void)
 852 {
 853         return panel_info.vl_col;
 854 }
 855
 856 int lcd_get_pixel_height(void)
 857 {
 858         return panel_info.vl_row;
 859 }
 860
 861 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 862 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 863 {
 864 #if LCD_BPP == LCD_COLOR16
 865         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 866                                        panel_info.vl_col, panel_info.vl_row,
 867                                        panel_info.vl_col * 2, "r5g6b5");
 868 #else
 869         return -1;
 870 #endif
 871 }
 872
 873 int lcd_dt_simplefb_add_node(void *blob)
 874 {
 875         static const char compat[] = "simple-framebuffer";
 876         static const char disabled[] = "disabled";
 877         int off, ret;
 878
 879         off = fdt_add_subnode(blob, 0, "framebuffer");
 880         if (off < 0)
 881                 return -1;
 882
 883         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 884         if (ret < 0)
 885                 return -1;
 886
 887         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
 888         if (ret < 0)
 889                 return -1;
 890
 891         return lcd_dt_simplefb_configure_node(blob, off);
 892 }
 893
 894 int lcd_dt_simplefb_enable_existing_node(void *blob)
 895 {
 896         int off;
 897
 898         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
 899         if (off < 0)
 900                 return -1;
 901
 902         return lcd_dt_simplefb_configure_node(blob, off);
 903 }
 904 #endif