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 #if LCD_BPP == LCD_COLOR8
 139 typedef uchar pix_t;
 140 #elif LCD_BPP == LCD_COLOR16
 141 typedef ushort pix_t;
 142 #elif LCD_BPP == LCD_COLOR32
 143 typedef ulong pix_t;
 144 #else
 145 #error Unsupported pixelformat
 146 #endif
 147
 148 static void test_pattern(void)
 149 {
 150         ushort v_max  = panel_info.vl_row;
 151         ushort h_max  = panel_info.vl_col;
 152         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 153         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 154         ushort v, h;
 155         pix_t *pix = lcd_base;
 156
 157         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 158                 h_max, v_max, h_step, v_step);
 159
 160         /* WARNING: Code silently assumes 8bit/pixel */
 161         for (v = 0; v < v_max; ++v) {
 162                 uchar iy = v / v_step;
 163                 for (h = 0; h < h_max; ++h) {
 164                         uchar ix = N_BLK_HOR * iy + h / h_step;
 165                         *pix++ = test_colors[ix];
 166                 }
 167         }
 168 }
 169 #endif /* LCD_TEST_PATTERN */
 170
 171
 172 /************************************************************************/
 173 /* ** GENERIC Initialization Routines                                   */
 174 /************************************************************************/
 175 /*
 176  * With most lcd drivers the line length is set up
 177  * by calculating it from panel_info parameters. Some
 178  * drivers need to calculate the line length differently,
 179  * so make the function weak to allow overriding it.
 180  */
 181 __weak int lcd_get_size(int *line_length)
 182 {
 183         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 184         return *line_length * panel_info.vl_row;
 185 }
 186
 187 int drv_lcd_init(void)
 188 {
 189         struct stdio_dev lcddev;
 190         int rc;
 191
 192         lcd_base = map_sysmem(gd->fb_base, 0);
 193
 194         lcd_init(lcd_base);             /* LCD initialization */
 195
 196         /* Device initialization */
 197         memset(&lcddev, 0, sizeof(lcddev));
 198
 199         strcpy(lcddev.name, "lcd");
 200         lcddev.ext   = 0;                       /* No extensions */
 201         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 202         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 203         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 204
 205         rc = stdio_register(&lcddev);
 206
 207         return (rc == 0) ? 1 : rc;
 208 }
 209
 210 /*----------------------------------------------------------------------*/
 211 void lcd_clear(void)
 212 {
 213         short console_rows, console_cols;
 214         int bg_color;
 215 #if LCD_BPP == LCD_COLOR8
 216         /* Setting the palette */
 217         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 218         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 219         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 220         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 221         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 222         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 223         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 224         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 225         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 226 #endif
 227
 228 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 229         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 230         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 231         bg_color = CONSOLE_COLOR_WHITE;
 232 #else
 233         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 234         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 235         bg_color = CONSOLE_COLOR_BLACK;
 236 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 237
 238 #ifdef  LCD_TEST_PATTERN
 239         test_pattern();
 240 #else
 241         /* set framebuffer to background color */
 242 #if (LCD_BPP != LCD_COLOR32)
 243         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 244 #else
 245         u32 *ppix = lcd_base;
 246         u32 i;
 247         for (i = 0;
 248            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 249            i++) {
 250                 *ppix++ = bg_color;
 251         }
 252 #endif
 253 #endif
 254         /* Paint the logo and retrieve LCD base address */
 255         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 256 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 257         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 258         console_rows /= VIDEO_FONT_HEIGHT;
 259 #else
 260         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 261 #endif
 262         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 263         lcd_init_console(lcd_base, console_rows, console_cols);
 264         lcd_init_console(lcd_logo(), console_rows, console_cols);
 265         lcd_sync();
 266 }
 267
 268 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 269                         char *const argv[])
 270 {
 271         lcd_clear();
 272         return 0;
 273 }
 274
 275 U_BOOT_CMD(
 276         cls,    1,      1,      do_lcd_clear,
 277         "clear screen",
 278         ""
 279 );
 280
 281 /*----------------------------------------------------------------------*/
 282
 283 static int lcd_init(void *lcdbase)
 284 {
 285         /* Initialize the lcd controller */
 286         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 287                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 288                 lcdbase);
 289
 290         lcd_ctrl_init(lcdbase);
 291
 292         /*
 293          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 294          * the 'lcdbase' argument and uses custom lcd base address
 295          * by setting up gd->fb_base. Check for this condition and fixup
 296          * 'lcd_base' address.
 297          */
 298         if (map_to_sysmem(lcdbase) != gd->fb_base)
 299                 lcd_base = map_sysmem(gd->fb_base, 0);
 300
 301         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 302
 303         lcd_get_size(&lcd_line_length);
 304         lcd_is_enabled = 1;
 305         lcd_clear();
 306         lcd_enable();
 307
 308         /* Initialize the console */
 309         lcd_set_col(0);
 310 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 311         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 312 #else
 313         lcd_set_row(1); /* leave 1 blank line below logo */
 314 #endif
 315
 316         return 0;
 317 }
 318
 319
 320 /************************************************************************/
 321 /* ** ROM capable initialization part - needed to reserve FB memory     */
 322 /************************************************************************/
 323 /*
 324  * This is called early in the system initialization to grab memory
 325  * for the LCD controller.
 326  * Returns new address for monitor, after reserving LCD buffer memory
 327  *
 328  * Note that this is running from ROM, so no write access to global data.
 329  */
 330 ulong lcd_setmem(ulong addr)
 331 {
 332         ulong size;
 333         int line_length;
 334
 335         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 336                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 337
 338         size = lcd_get_size(&line_length);
 339
 340         /* Round up to nearest full page, or MMU section if defined */
 341         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 342         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 343
 344         /* Allocate pages for the frame buffer. */
 345         addr -= size;
 346
 347         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 348               size >> 10, addr);
 349
 350         return addr;
 351 }
 352
 353 /*----------------------------------------------------------------------*/
 354
 355 static void lcd_setfgcolor(int color)
 356 {
 357         lcd_color_fg = color;
 358 }
 359
 360 int lcd_getfgcolor(void)
 361 {
 362         return lcd_color_fg;
 363 }
 364
 365 /*----------------------------------------------------------------------*/
 366
 367 static void lcd_setbgcolor(int color)
 368 {
 369         lcd_color_bg = color;
 370 }
 371
 372 int lcd_getbgcolor(void)
 373 {
 374         return lcd_color_bg;
 375 }
 376
 377 /************************************************************************/
 378 /* ** Chipset depending Bitmap / Logo stuff...                          */
 379 /************************************************************************/
 380
 381 #ifdef CONFIG_LCD_LOGO
 382 __weak void lcd_logo_set_cmap(void)
 383 {
 384         int i;
 385         ushort *cmap = configuration_get_cmap();
 386
 387         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 388                 *cmap++ = bmp_logo_palette[i];
 389 }
 390
 391 void bitmap_plot(int x, int y)
 392 {
 393         ushort i, j;
 394         uchar *bmap;
 395         uchar *fb;
 396         ushort *fb16;
 397         unsigned bpix = NBITS(panel_info.vl_bpix);
 398
 399         debug("Logo: width %d  height %d  colors %d\n",
 400               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 401
 402         bmap = &bmp_logo_bitmap[0];
 403         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 404
 405         if (bpix < 12) {
 406                 WATCHDOG_RESET();
 407                 lcd_logo_set_cmap();
 408                 WATCHDOG_RESET();
 409
 410                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 411                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 412                         bmap += BMP_LOGO_WIDTH;
 413                         fb += panel_info.vl_col;
 414                 }
 415         } else if (NBITS(panel_info.vl_bpix) == 16) {
 416                 u16 col16;
 417                 fb16 = (ushort *)fb;
 418                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 419                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 420                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 421                                 fb16[j] =
 422                                         ((col16 & 0x000F) << 1) |
 423                                         ((col16 & 0x00F0) << 3) |
 424                                         ((col16 & 0x0F00) << 4);
 425                                 }
 426                         bmap += BMP_LOGO_WIDTH;
 427                         fb16 += panel_info.vl_col;
 428                 }
 429         } else { /* true color mode */
 430                 u16 col16;
 431                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 432
 433                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 434                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 435                                 col16 = bmp_logo_palette[bmap[j] - 16];
 436                                 fb32[j] =
 437                                         ((col16 & 0x000F) << 4) |
 438                                         ((col16 & 0x00F0) << 8) |
 439                                         ((col16 & 0x0F00) << 12);
 440                                 }
 441                         bmap += BMP_LOGO_WIDTH;
 442                         fb32 += panel_info.vl_col;
 443                 }
 444         }
 445
 446         WATCHDOG_RESET();
 447         lcd_sync();
 448 }
 449 #else
 450 static inline void bitmap_plot(int x, int y) {}
 451 #endif /* CONFIG_LCD_LOGO */
 452
 453 /*----------------------------------------------------------------------*/
 454 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 455 /*
 456  * Display the BMP file located at address bmp_image.
 457  * Only uncompressed.
 458  */
 459
 460 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 461 #define BMP_ALIGN_CENTER        0x7FFF
 462
 463 static void splash_align_axis(int *axis, unsigned long panel_size,
 464                                         unsigned long picture_size)
 465 {
 466         unsigned long panel_picture_delta = panel_size - picture_size;
 467         unsigned long axis_alignment;
 468
 469         if (*axis == BMP_ALIGN_CENTER)
 470                 axis_alignment = panel_picture_delta / 2;
 471         else if (*axis < 0)
 472                 axis_alignment = panel_picture_delta + *axis + 1;
 473         else
 474                 return;
 475
 476         *axis = max(0, (int)axis_alignment);
 477 }
 478 #endif
 479
 480
 481 #ifdef CONFIG_LCD_BMP_RLE8
 482
 483 #define BMP_RLE8_ESCAPE         0
 484 #define BMP_RLE8_EOL            0
 485 #define BMP_RLE8_EOBMP          1
 486 #define BMP_RLE8_DELTA          2
 487
 488 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 489                                   int cnt)
 490 {
 491         while (cnt > 0) {
 492                 *(*fbp)++ = cmap[*bmap++];
 493                 cnt--;
 494         }
 495 }
 496
 497 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 498 {
 499         ushort *fb = *fbp;
 500         int cnt_8copy = cnt >> 3;
 501
 502         cnt -= cnt_8copy << 3;
 503         while (cnt_8copy > 0) {
 504                 *fb++ = c;
 505                 *fb++ = c;
 506                 *fb++ = c;
 507                 *fb++ = c;
 508                 *fb++ = c;
 509                 *fb++ = c;
 510                 *fb++ = c;
 511                 *fb++ = c;
 512                 cnt_8copy--;
 513         }
 514         while (cnt > 0) {
 515                 *fb++ = c;
 516                 cnt--;
 517         }
 518         *fbp = fb;
 519 }
 520
 521 /*
 522  * Do not call this function directly, must be called from lcd_display_bitmap.
 523  */
 524 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 525                                     int x_off, int y_off)
 526 {
 527         uchar *bmap;
 528         ulong width, height;
 529         ulong cnt, runlen;
 530         int x, y;
 531         int decode = 1;
 532
 533         width = get_unaligned_le32(&bmp->header.width);
 534         height = get_unaligned_le32(&bmp->header.height);
 535         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 536
 537         x = 0;
 538         y = height - 1;
 539
 540         while (decode) {
 541                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 542                         switch (bmap[1]) {
 543                         case BMP_RLE8_EOL:
 544                                 /* end of line */
 545                                 bmap += 2;
 546                                 x = 0;
 547                                 y--;
 548                                 /* 16bpix, 2-byte per pixel, width should *2 */
 549                                 fb -= (width * 2 + lcd_line_length);
 550                                 break;
 551                         case BMP_RLE8_EOBMP:
 552                                 /* end of bitmap */
 553                                 decode = 0;
 554                                 break;
 555                         case BMP_RLE8_DELTA:
 556                                 /* delta run */
 557                                 x += bmap[2];
 558                                 y -= bmap[3];
 559                                 /* 16bpix, 2-byte per pixel, x should *2 */
 560                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 561                                         * lcd_line_length + (x + x_off) * 2);
 562                                 bmap += 4;
 563                                 break;
 564                         default:
 565                                 /* unencoded run */
 566                                 runlen = bmap[1];
 567                                 bmap += 2;
 568                                 if (y < height) {
 569                                         if (x < width) {
 570                                                 if (x + runlen > width)
 571                                                         cnt = width - x;
 572                                                 else
 573                                                         cnt = runlen;
 574                                                 draw_unencoded_bitmap(
 575                                                         (ushort **)&fb,
 576                                                         bmap, cmap, cnt);
 577                                         }
 578                                         x += runlen;
 579                                 }
 580                                 bmap += runlen;
 581                                 if (runlen & 1)
 582                                         bmap++;
 583                         }
 584                 } else {
 585                         /* encoded run */
 586                         if (y < height) {
 587                                 runlen = bmap[0];
 588                                 if (x < width) {
 589                                         /* aggregate the same code */
 590                                         while (bmap[0] == 0xff &&
 591                                                bmap[2] != BMP_RLE8_ESCAPE &&
 592                                                bmap[1] == bmap[3]) {
 593                                                 runlen += bmap[2];
 594                                                 bmap += 2;
 595                                         }
 596                                         if (x + runlen > width)
 597                                                 cnt = width - x;
 598                                         else
 599                                                 cnt = runlen;
 600                                         draw_encoded_bitmap((ushort **)&fb,
 601                                                 cmap[bmap[1]], cnt);
 602                                 }
 603                                 x += runlen;
 604                         }
 605                         bmap += 2;
 606                 }
 607         }
 608 }
 609 #endif
 610
 611 __weak void fb_put_byte(uchar **fb, uchar **from)
 612 {
 613         *(*fb)++ = *(*from)++;
 614 }
 615
 616 #if defined(CONFIG_BMP_16BPP)
 617 __weak void fb_put_word(uchar **fb, uchar **from)
 618 {
 619         *(*fb)++ = *(*from)++;
 620         *(*fb)++ = *(*from)++;
 621 }
 622 #endif /* CONFIG_BMP_16BPP */
 623
 624 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 625 {
 626         int i;
 627         bmp_color_table_entry_t cte;
 628         ushort *cmap = configuration_get_cmap();
 629
 630         for (i = 0; i < colors; ++i) {
 631                 cte = bmp->color_table[i];
 632                 *cmap = (((cte.red)   << 8) & 0xf800) |
 633                         (((cte.green) << 3) & 0x07e0) |
 634                         (((cte.blue)  >> 3) & 0x001f);
 635 #if defined(CONFIG_MPC823)
 636                 cmap--;
 637 #else
 638                 cmap++;
 639 #endif
 640         }
 641 }
 642
 643 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 644 {
 645         ushort *cmap_base = NULL;
 646         ushort i, j;
 647         uchar *fb;
 648         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 649         uchar *bmap;
 650         ushort padded_width;
 651         unsigned long width, height;
 652         unsigned long pwidth = panel_info.vl_col;
 653         unsigned long long colors;
 654         unsigned bpix, bmp_bpix;
 655         bmp_color_table_entry_t *cte;
 656
 657         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 658                 bmp->header.signature[1] == 'M')) {
 659                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 660
 661                 return 1;
 662         }
 663
 664         width = get_unaligned_le32(&bmp->header.width);
 665         height = get_unaligned_le32(&bmp->header.height);
 666         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 667
 668         colors = 1 << bmp_bpix;
 669
 670         bpix = NBITS(panel_info.vl_bpix);
 671
 672         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 673                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 674                         bpix, bmp_bpix);
 675
 676                 return 1;
 677         }
 678
 679         /*
 680          * We support displaying 8bpp BMPs on 16bpp LCDs
 681          * and displaying 24bpp BMPs on 32bpp LCDs
 682          * */
 683         if (bpix != bmp_bpix &&
 684             !(bmp_bpix == 8 && bpix == 16) &&
 685             !(bmp_bpix == 24 && bpix == 32)) {
 686                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 687                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 688                 return 1;
 689         }
 690
 691         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 692                 width, height, colors);
 693
 694         if (bmp_bpix == 8)
 695                 lcd_set_cmap(bmp, colors);
 696
 697         padded_width = ALIGN(width, 4);
 698
 699 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 700         splash_align_axis(&x, pwidth, width);
 701         splash_align_axis(&y, panel_info.vl_row, height);
 702 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 703         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 704
 705         if ((x + width) > pwidth)
 706                 width = pwidth - x;
 707         if ((y + height) > panel_info.vl_row) {
 708                 height = panel_info.vl_row - y;
 709                 bmap += (panel_info.vl_row - y) * padded_width;
 710         }
 711
 712         fb   = (uchar *)(lcd_base +
 713                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 714
 715         switch (bmp_bpix) {
 716         case 1: /* pass through */
 717         case 8: {
 718                 cmap_base = configuration_get_cmap();
 719 #ifdef CONFIG_LCD_BMP_RLE8
 720                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 721                 if (compression == BMP_BI_RLE8) {
 722                         if (bpix != 16) {
 723                                 /* TODO implement render code for bpix != 16 */
 724                                 printf("Error: only support 16 bpix");
 725                                 return 1;
 726                         }
 727                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 728                         break;
 729                 }
 730 #endif
 731
 732                 for (i = 0; i < height; ++i) {
 733                         WATCHDOG_RESET();
 734                         for (j = 0; j < width; j++) {
 735                                 if (bpix == 32) {
 736                                         int i = *bmap++;
 737
 738                                         fb[3] = 0; /* T */
 739                                         fb[0] = cte[i].blue;
 740                                         fb[1] = cte[i].green;
 741                                         fb[2] = cte[i].red;
 742                                         fb += sizeof(uint32_t) / sizeof(*fb);
 743                                 } else if (bpix == 16) {
 744                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 745                                         fb += sizeof(uint16_t) / sizeof(*fb);
 746                                 } else {
 747                                         FB_PUT_BYTE(fb, bmap);
 748                                 }
 749                         }
 750                         if (bpix > 8) {
 751                                 bmap += padded_width - width;
 752                                 fb   -= width * bpix / 8 + lcd_line_length;
 753                         } else {
 754                                 bmap += padded_width;
 755                                 fb -= lcd_line_length;
 756                         }
 757                 }
 758                 break;
 759         }
 760 #if defined(CONFIG_BMP_16BPP)
 761         case 16:
 762                 for (i = 0; i < height; ++i) {
 763                         WATCHDOG_RESET();
 764                         for (j = 0; j < width; j++)
 765                                 fb_put_word(&fb, &bmap);
 766
 767                         bmap += (padded_width - width) * 2;
 768                         fb -= width * 2 + lcd_line_length;
 769                 }
 770                 break;
 771 #endif /* CONFIG_BMP_16BPP */
 772 #if defined(CONFIG_BMP_24BMP)
 773         case 24:
 774                 for (i = 0; i < height; ++i) {
 775                         for (j = 0; j < width; j++) {
 776                                 *(fb++) = *(bmap++);
 777                                 *(fb++) = *(bmap++);
 778                                 *(fb++) = *(bmap++);
 779                                 *(fb++) = 0;
 780                         }
 781                         fb -= lcd_line_length + width * (bpix / 8);
 782                 }
 783                 break;
 784 #endif /* CONFIG_BMP_24BPP */
 785 #if defined(CONFIG_BMP_32BPP)
 786         case 32:
 787                 for (i = 0; i < height; ++i) {
 788                         WATCHDOG_RESET();
 789                         for (j = 0; j < width; j++) {
 790                                 fb[3] = *bmap++; /* T */
 791                                 fb[0] = *bmap++; /* B */
 792                                 fb[1] = *bmap++; /* G */
 793                                 fb[2] = *bmap++; /* R */
 794                                 fb += 4;
 795                         }
 796                         bmap += (padded_width - width) * 4;
 797                         fb -= lcd_line_length + width * (bpix / 8);
 798                 }
 799                 break;
 800 #endif /* CONFIG_BMP_32BPP */
 801         };
 802
 803         return 0;
 804 }
 805 #endif
 806
 807 static void *lcd_logo(void)
 808 {
 809 #ifdef CONFIG_SPLASH_SCREEN
 810         char *s;
 811         ulong addr;
 812         static int do_splash = 1;
 813
 814         if (do_splash && (s = getenv("splashimage")) != NULL) {
 815                 int x = 0, y = 0;
 816                 char *end;
 817
 818                 do_splash = 0;
 819
 820                 if (splash_screen_prepare())
 821                         return (void *)lcd_base;
 822
 823                 addr = simple_strtoul (s, &end, 16);
 824                 if (addr == 0 || *end != '\0')
 825                         return lcd_base;
 826
 827                 splash_get_pos(&x, &y);
 828
 829                 if (bmp_display(addr, x, y) == 0)
 830                         return (void *)lcd_base;
 831         }
 832 #endif /* CONFIG_SPLASH_SCREEN */
 833
 834         bitmap_plot(0, 0);
 835
 836 #ifdef CONFIG_LCD_INFO
 837         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 838         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 839         lcd_show_board_info();
 840 #endif /* CONFIG_LCD_INFO */
 841
 842 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 843         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 844 #else
 845         return lcd_base;
 846 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 847 }
 848
 849 #ifdef CONFIG_SPLASHIMAGE_GUARD
 850 static int on_splashimage(const char *name, const char *value, enum env_op op,
 851         int flags)
 852 {
 853         ulong addr;
 854         int aligned;
 855
 856         if (op == env_op_delete)
 857                 return 0;
 858
 859         addr = simple_strtoul(value, NULL, 16);
 860         /* See README.displaying-bmps */
 861         aligned = (addr % 4 == 2);
 862         if (!aligned) {
 863                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 864                 return -1;
 865         }
 866
 867         return 0;
 868 }
 869
 870 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 871 #endif
 872
 873 int lcd_get_pixel_width(void)
 874 {
 875         return panel_info.vl_col;
 876 }
 877
 878 int lcd_get_pixel_height(void)
 879 {
 880         return panel_info.vl_row;
 881 }
 882
 883 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 884 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 885 {
 886 #if LCD_BPP == LCD_COLOR16
 887         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 888                                        panel_info.vl_col, panel_info.vl_row,
 889                                        panel_info.vl_col * 2, "r5g6b5");
 890 #else
 891         return -1;
 892 #endif
 893 }
 894
 895 int lcd_dt_simplefb_add_node(void *blob)
 896 {
 897         static const char compat[] = "simple-framebuffer";
 898         static const char disabled[] = "disabled";
 899         int off, ret;
 900
 901         off = fdt_add_subnode(blob, 0, "framebuffer");
 902         if (off < 0)
 903                 return -1;
 904
 905         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 906         if (ret < 0)
 907                 return -1;
 908
 909         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
 910         if (ret < 0)
 911                 return -1;
 912
 913         return lcd_dt_simplefb_configure_node(blob, off);
 914 }
 915
 916 int lcd_dt_simplefb_enable_existing_node(void *blob)
 917 {
 918         int off;
 919
 920         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
 921         if (off < 0)
 922                 return -1;
 923
 924         return lcd_dt_simplefb_configure_node(blob, off);
 925 }
 926 #endif