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