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 #if LCD_BPP == LCD_COLOR8
 157 typedef uchar pix_t;
 158 #elif LCD_BPP == LCD_COLOR16
 159 typedef ushort pix_t;
 160 #elif LCD_BPP == LCD_COLOR32
 161 typedef ulong pix_t;
 162 #else
 163 #error Unsupported pixelformat
 164 #endif
 165
 166 static void test_pattern(void)
 167 {
 168         ushort v_max  = panel_info.vl_row;
 169         ushort h_max  = panel_info.vl_col;
 170         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 171         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 172         ushort v, h;
 173         pix_t *pix = lcd_base;
 174
 175         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 176                 h_max, v_max, h_step, v_step);
 177
 178         /* WARNING: Code silently assumes 8bit/pixel */
 179         for (v = 0; v < v_max; ++v) {
 180                 uchar iy = v / v_step;
 181                 for (h = 0; h < h_max; ++h) {
 182                         uchar ix = N_BLK_HOR * iy + h / h_step;
 183                         *pix++ = test_colors[ix];
 184                 }
 185         }
 186 }
 187 #endif /* LCD_TEST_PATTERN */
 188
 189
 190 /************************************************************************/
 191 /* ** GENERIC Initialization Routines                                   */
 192 /************************************************************************/
 193 /*
 194  * With most lcd drivers the line length is set up
 195  * by calculating it from panel_info parameters. Some
 196  * drivers need to calculate the line length differently,
 197  * so make the function weak to allow overriding it.
 198  */
 199 __weak int lcd_get_size(int *line_length)
 200 {
 201         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 202         return *line_length * panel_info.vl_row;
 203 }
 204
 205 int drv_lcd_init(void)
 206 {
 207         struct stdio_dev lcddev;
 208         int rc;
 209
 210         lcd_base = map_sysmem(gd->fb_base, 0);
 211
 212         lcd_init(lcd_base);             /* LCD initialization */
 213
 214         /* Device initialization */
 215         memset(&lcddev, 0, sizeof(lcddev));
 216
 217         strcpy(lcddev.name, "lcd");
 218         lcddev.ext   = 0;                       /* No extensions */
 219         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 220         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 221         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 222
 223         rc = stdio_register(&lcddev);
 224
 225         return (rc == 0) ? 1 : rc;
 226 }
 227
 228 /*----------------------------------------------------------------------*/
 229 void lcd_clear(void)
 230 {
 231         short console_rows, console_cols;
 232         int bg_color;
 233 #if LCD_BPP == LCD_COLOR8
 234         /* Setting the palette */
 235         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 236         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 237         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 238         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 239         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 240         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 241         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 242         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 243         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 244 #endif
 245
 246 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 247         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 248         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 249         bg_color = CONSOLE_COLOR_WHITE;
 250 #else
 251         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 252         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 253         bg_color = CONSOLE_COLOR_BLACK;
 254 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 255
 256 #ifdef  LCD_TEST_PATTERN
 257         test_pattern();
 258 #else
 259         /* set framebuffer to background color */
 260 #if (LCD_BPP != LCD_COLOR32)
 261         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 262 #else
 263         u32 *ppix = lcd_base;
 264         u32 i;
 265         for (i = 0;
 266            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 267            i++) {
 268                 *ppix++ = bg_color;
 269         }
 270 #endif
 271 #endif
 272         /* Paint the logo and retrieve LCD base address */
 273         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 274 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 275         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 276         console_rows /= VIDEO_FONT_HEIGHT;
 277 #else
 278         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 279 #endif
 280         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 281         lcd_init_console(lcd_base, console_rows, console_cols);
 282         lcd_init_console(lcd_logo(), console_rows, console_cols);
 283         lcd_sync();
 284 }
 285
 286 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 287                         char *const argv[])
 288 {
 289         lcd_clear();
 290         return 0;
 291 }
 292
 293 U_BOOT_CMD(
 294         cls,    1,      1,      do_lcd_clear,
 295         "clear screen",
 296         ""
 297 );
 298
 299 /*----------------------------------------------------------------------*/
 300
 301 static int lcd_init(void *lcdbase)
 302 {
 303         /* Initialize the lcd controller */
 304         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 305                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 306                 lcdbase);
 307
 308         lcd_ctrl_init(lcdbase);
 309
 310         /*
 311          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 312          * the 'lcdbase' argument and uses custom lcd base address
 313          * by setting up gd->fb_base. Check for this condition and fixup
 314          * 'lcd_base' address.
 315          */
 316         if (map_to_sysmem(lcdbase) != gd->fb_base)
 317                 lcd_base = map_sysmem(gd->fb_base, 0);
 318
 319         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 320
 321         lcd_get_size(&lcd_line_length);
 322         lcd_is_enabled = 1;
 323         lcd_clear();
 324         lcd_enable();
 325
 326         /* Initialize the console */
 327         lcd_set_col(0);
 328 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 329         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 330 #else
 331         lcd_set_row(1); /* leave 1 blank line below logo */
 332 #endif
 333
 334         return 0;
 335 }
 336
 337
 338 /************************************************************************/
 339 /* ** ROM capable initialization part - needed to reserve FB memory     */
 340 /************************************************************************/
 341 /*
 342  * This is called early in the system initialization to grab memory
 343  * for the LCD controller.
 344  * Returns new address for monitor, after reserving LCD buffer memory
 345  *
 346  * Note that this is running from ROM, so no write access to global data.
 347  */
 348 ulong lcd_setmem(ulong addr)
 349 {
 350         ulong size;
 351         int line_length;
 352
 353         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 354                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 355
 356         size = lcd_get_size(&line_length);
 357
 358         /* Round up to nearest full page, or MMU section if defined */
 359         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 360         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 361
 362         /* Allocate pages for the frame buffer. */
 363         addr -= size;
 364
 365         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 366               size >> 10, addr);
 367
 368         return addr;
 369 }
 370
 371 /*----------------------------------------------------------------------*/
 372
 373 static void lcd_setfgcolor(int color)
 374 {
 375         lcd_color_fg = color;
 376 }
 377
 378 int lcd_getfgcolor(void)
 379 {
 380         return lcd_color_fg;
 381 }
 382
 383 /*----------------------------------------------------------------------*/
 384
 385 static void lcd_setbgcolor(int color)
 386 {
 387         lcd_color_bg = color;
 388 }
 389
 390 int lcd_getbgcolor(void)
 391 {
 392         return lcd_color_bg;
 393 }
 394
 395 /************************************************************************/
 396 /* ** Chipset depending Bitmap / Logo stuff...                          */
 397 /************************************************************************/
 398
 399 #ifdef CONFIG_LCD_LOGO
 400 void bitmap_plot(int x, int y)
 401 {
 402 #ifdef CONFIG_ATMEL_LCD
 403         uint *cmap = (uint *)bmp_logo_palette;
 404 #else
 405         ushort *cmap = (ushort *)bmp_logo_palette;
 406 #endif
 407         ushort i, j;
 408         uchar *bmap;
 409         uchar *fb;
 410         ushort *fb16;
 411 #if defined(CONFIG_MPC823)
 412         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 413         cpm8xx_t *cp = &(immr->im_cpm);
 414 #endif
 415         unsigned bpix = NBITS(panel_info.vl_bpix);
 416
 417         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 418                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 419                 ARRAY_SIZE(bmp_logo_palette));
 420
 421         bmap = &bmp_logo_bitmap[0];
 422         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 423
 424         if (bpix < 12) {
 425                 /* Leave room for default color map
 426                  * default case: generic system with no cmap (most likely 16bpp)
 427                  * cmap was set to the source palette, so no change is done.
 428                  * This avoids even more ifdefs in the next stanza
 429                  */
 430 #if defined(CONFIG_MPC823)
 431                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 432 #elif defined(CONFIG_ATMEL_LCD)
 433                 cmap = (uint *)configuration_get_cmap();
 434 #else
 435                 cmap = configuration_get_cmap();
 436 #endif
 437
 438                 WATCHDOG_RESET();
 439
 440                 /* Set color map */
 441                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 442                         ushort colreg = bmp_logo_palette[i];
 443 #ifdef CONFIG_ATMEL_LCD
 444                         uint lut_entry;
 445 #ifdef CONFIG_ATMEL_LCD_BGR555
 446                         lut_entry = ((colreg & 0x000F) << 11) |
 447                                         ((colreg & 0x00F0) <<  2) |
 448                                         ((colreg & 0x0F00) >>  7);
 449 #else /* CONFIG_ATMEL_LCD_RGB565 */
 450                         lut_entry = ((colreg & 0x000F) << 1) |
 451                                         ((colreg & 0x00F0) << 3) |
 452                                         ((colreg & 0x0F00) << 4);
 453 #endif
 454                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 455                         cmap++;
 456 #else /* !CONFIG_ATMEL_LCD */
 457                         *cmap++ = colreg;
 458 #endif /* CONFIG_ATMEL_LCD */
 459                 }
 460
 461                 WATCHDOG_RESET();
 462
 463                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 464                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 465                         bmap += BMP_LOGO_WIDTH;
 466                         fb += panel_info.vl_col;
 467                 }
 468         } else if (NBITS(panel_info.vl_bpix) == 16) {
 469                 u16 col16;
 470                 fb16 = (ushort *)fb;
 471                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 472                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 473                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 474                                 fb16[j] =
 475                                         ((col16 & 0x000F) << 1) |
 476                                         ((col16 & 0x00F0) << 3) |
 477                                         ((col16 & 0x0F00) << 4);
 478                                 }
 479                         bmap += BMP_LOGO_WIDTH;
 480                         fb16 += panel_info.vl_col;
 481                 }
 482         } else { /* true color mode */
 483                 u16 col16;
 484                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 485
 486                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 487                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 488                                 col16 = bmp_logo_palette[bmap[j] - 16];
 489                                 fb32[j] =
 490                                         ((col16 & 0x000F) << 4) |
 491                                         ((col16 & 0x00F0) << 8) |
 492                                         ((col16 & 0x0F00) << 12);
 493                                 }
 494                         bmap += BMP_LOGO_WIDTH;
 495                         fb32 += panel_info.vl_col;
 496                 }
 497         }
 498
 499         WATCHDOG_RESET();
 500         lcd_sync();
 501 }
 502 #else
 503 static inline void bitmap_plot(int x, int y) {}
 504 #endif /* CONFIG_LCD_LOGO */
 505
 506 /*----------------------------------------------------------------------*/
 507 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 508 /*
 509  * Display the BMP file located at address bmp_image.
 510  * Only uncompressed.
 511  */
 512
 513 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 514 #define BMP_ALIGN_CENTER        0x7FFF
 515
 516 static void splash_align_axis(int *axis, unsigned long panel_size,
 517                                         unsigned long picture_size)
 518 {
 519         unsigned long panel_picture_delta = panel_size - picture_size;
 520         unsigned long axis_alignment;
 521
 522         if (*axis == BMP_ALIGN_CENTER)
 523                 axis_alignment = panel_picture_delta / 2;
 524         else if (*axis < 0)
 525                 axis_alignment = panel_picture_delta + *axis + 1;
 526         else
 527                 return;
 528
 529         *axis = max(0, (int)axis_alignment);
 530 }
 531 #endif
 532
 533
 534 #ifdef CONFIG_LCD_BMP_RLE8
 535
 536 #define BMP_RLE8_ESCAPE         0
 537 #define BMP_RLE8_EOL            0
 538 #define BMP_RLE8_EOBMP          1
 539 #define BMP_RLE8_DELTA          2
 540
 541 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 542                                   int cnt)
 543 {
 544         while (cnt > 0) {
 545                 *(*fbp)++ = cmap[*bmap++];
 546                 cnt--;
 547         }
 548 }
 549
 550 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 551 {
 552         ushort *fb = *fbp;
 553         int cnt_8copy = cnt >> 3;
 554
 555         cnt -= cnt_8copy << 3;
 556         while (cnt_8copy > 0) {
 557                 *fb++ = c;
 558                 *fb++ = c;
 559                 *fb++ = c;
 560                 *fb++ = c;
 561                 *fb++ = c;
 562                 *fb++ = c;
 563                 *fb++ = c;
 564                 *fb++ = c;
 565                 cnt_8copy--;
 566         }
 567         while (cnt > 0) {
 568                 *fb++ = c;
 569                 cnt--;
 570         }
 571         *fbp = fb;
 572 }
 573
 574 /*
 575  * Do not call this function directly, must be called from lcd_display_bitmap.
 576  */
 577 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 578                                     int x_off, int y_off)
 579 {
 580         uchar *bmap;
 581         ulong width, height;
 582         ulong cnt, runlen;
 583         int x, y;
 584         int decode = 1;
 585
 586         width = get_unaligned_le32(&bmp->header.width);
 587         height = get_unaligned_le32(&bmp->header.height);
 588         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 589
 590         x = 0;
 591         y = height - 1;
 592
 593         while (decode) {
 594                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 595                         switch (bmap[1]) {
 596                         case BMP_RLE8_EOL:
 597                                 /* end of line */
 598                                 bmap += 2;
 599                                 x = 0;
 600                                 y--;
 601                                 /* 16bpix, 2-byte per pixel, width should *2 */
 602                                 fb -= (width * 2 + lcd_line_length);
 603                                 break;
 604                         case BMP_RLE8_EOBMP:
 605                                 /* end of bitmap */
 606                                 decode = 0;
 607                                 break;
 608                         case BMP_RLE8_DELTA:
 609                                 /* delta run */
 610                                 x += bmap[2];
 611                                 y -= bmap[3];
 612                                 /* 16bpix, 2-byte per pixel, x should *2 */
 613                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 614                                         * lcd_line_length + (x + x_off) * 2);
 615                                 bmap += 4;
 616                                 break;
 617                         default:
 618                                 /* unencoded run */
 619                                 runlen = bmap[1];
 620                                 bmap += 2;
 621                                 if (y < height) {
 622                                         if (x < width) {
 623                                                 if (x + runlen > width)
 624                                                         cnt = width - x;
 625                                                 else
 626                                                         cnt = runlen;
 627                                                 draw_unencoded_bitmap(
 628                                                         (ushort **)&fb,
 629                                                         bmap, cmap, cnt);
 630                                         }
 631                                         x += runlen;
 632                                 }
 633                                 bmap += runlen;
 634                                 if (runlen & 1)
 635                                         bmap++;
 636                         }
 637                 } else {
 638                         /* encoded run */
 639                         if (y < height) {
 640                                 runlen = bmap[0];
 641                                 if (x < width) {
 642                                         /* aggregate the same code */
 643                                         while (bmap[0] == 0xff &&
 644                                                bmap[2] != BMP_RLE8_ESCAPE &&
 645                                                bmap[1] == bmap[3]) {
 646                                                 runlen += bmap[2];
 647                                                 bmap += 2;
 648                                         }
 649                                         if (x + runlen > width)
 650                                                 cnt = width - x;
 651                                         else
 652                                                 cnt = runlen;
 653                                         draw_encoded_bitmap((ushort **)&fb,
 654                                                 cmap[bmap[1]], cnt);
 655                                 }
 656                                 x += runlen;
 657                         }
 658                         bmap += 2;
 659                 }
 660         }
 661 }
 662 #endif
 663
 664 #if defined(CONFIG_MPC823)
 665 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 666 #else
 667 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 668 #endif
 669
 670 #if defined(CONFIG_BMP_16BPP)
 671 __weak void fb_put_word(uchar **fb, uchar **from)
 672 {
 673         *(*fb)++ = *(*from)++;
 674         *(*fb)++ = *(*from)++;
 675 }
 676 #endif /* CONFIG_BMP_16BPP */
 677
 678 static inline bmp_color_table_entry_t *get_color_table(bmp_image_t *bmp)
 679 {
 680         bmp_header_t *bh = &bmp->header;
 681         return (void *)bmp + offsetof(bmp_header_t, size) + bh->size;
 682 }
 683
 684 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 685 {
 686         ushort *cmap = NULL;
 687         ushort *cmap_base = NULL;
 688         ushort i, j;
 689         uchar *fb;
 690         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 691         uchar *bmap;
 692         ushort padded_width;
 693         unsigned long width, height;
 694         unsigned long pwidth = panel_info.vl_col;
 695         unsigned long long colors;
 696         unsigned bpix, bmp_bpix;
 697         bmp_color_table_entry_t *cte;
 698
 699         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 700                 bmp->header.signature[1] == 'M')) {
 701                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 702
 703                 return 1;
 704         }
 705
 706         width = get_unaligned_le32(&bmp->header.width);
 707         height = get_unaligned_le32(&bmp->header.height);
 708         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 709
 710         colors = 1 << bmp_bpix;
 711
 712         bpix = NBITS(panel_info.vl_bpix);
 713
 714         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 715                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 716                         bpix, bmp_bpix);
 717
 718                 return 1;
 719         }
 720
 721         /*
 722          * We support displaying 8bpp BMPs on 16bpp LCDs
 723          * and displaying 24bpp BMPs on 32bpp LCDs
 724          * */
 725         if (bpix != bmp_bpix &&
 726             !(bmp_bpix == 8 && bpix == 16) &&
 727             !(bmp_bpix == 24 && bpix == 32)) {
 728                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 729                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 730                 return 1;
 731         }
 732
 733         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 734                 width, height, colors);
 735
 736         cte = get_color_table(bmp);
 737         if (bmp_bpix == 8) {
 738                 cmap = configuration_get_cmap();
 739                 cmap_base = cmap;
 740
 741                 /* Set color map */
 742                 for (i = 0; i < colors; ++i) {
 743 #if !defined(CONFIG_ATMEL_LCD)
 744                         ushort colreg =
 745                                 ( ((cte[i].red)   << 8) & 0xf800) |
 746                                 ( ((cte[i].green) << 3) & 0x07e0) |
 747                                 ( ((cte[i].blue)  >> 3) & 0x001f) ;
 748                         *cmap = colreg;
 749 #if defined(CONFIG_MPC823)
 750                         cmap--;
 751 #else
 752                         cmap++;
 753 #endif
 754 #else /* CONFIG_ATMEL_LCD */
 755                         lcd_setcolreg(i, cte[i].red, cte[i].green, cte[i].blue);
 756 #endif
 757                 }
 758         }
 759
 760         padded_width = ALIGN(width, 4);
 761
 762 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 763         splash_align_axis(&x, pwidth, width);
 764         splash_align_axis(&y, panel_info.vl_row, height);
 765 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 766         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 767
 768         if ((x + width) > pwidth)
 769                 width = pwidth - x;
 770         if ((y + height) > panel_info.vl_row) {
 771                 height = panel_info.vl_row - y;
 772                 bmap += (panel_info.vl_row - y) * padded_width;
 773         }
 774
 775         fb   = (uchar *)(lcd_base +
 776                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 777
 778         switch (bmp_bpix) {
 779         case 1: /* pass through */
 780         case 8: {
 781 #ifdef CONFIG_LCD_BMP_RLE8
 782                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 783                 if (compression == BMP_BI_RLE8) {
 784                         if (bpix != 16) {
 785                                 /* TODO implement render code for bpix != 16 */
 786                                 printf("Error: only support 16 bpix");
 787                                 return 1;
 788                         }
 789                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 790                         break;
 791                 }
 792 #endif
 793
 794                 for (i = 0; i < height; ++i) {
 795                         WATCHDOG_RESET();
 796                         for (j = 0; j < width; j++) {
 797                                 if (bpix == 32) {
 798                                         int i = *bmap++;
 799
 800                                         fb[3] = 0; /* T */
 801                                         fb[0] = cte[i].blue;
 802                                         fb[1] = cte[i].green;
 803                                         fb[2] = cte[i].red;
 804                                         fb += sizeof(uint32_t) / sizeof(*fb);
 805                                 } else if (bpix == 16) {
 806                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 807                                         fb += sizeof(uint16_t) / sizeof(*fb);
 808                                 } else {
 809                                         FB_PUT_BYTE(fb, bmap);
 810                                 }
 811                         }
 812                         if (bpix > 8) {
 813                                 bmap += padded_width - width;
 814                                 fb   -= width * bpix / 8 + lcd_line_length;
 815                         } else {
 816                                 bmap += padded_width;
 817                                 fb -= lcd_line_length;
 818                         }
 819                 }
 820                 break;
 821         }
 822 #if defined(CONFIG_BMP_16BPP)
 823         case 16:
 824                 for (i = 0; i < height; ++i) {
 825                         WATCHDOG_RESET();
 826                         for (j = 0; j < width; j++)
 827                                 fb_put_word(&fb, &bmap);
 828
 829                         bmap += (padded_width - width) * 2;
 830                         fb -= width * 2 + lcd_line_length;
 831                 }
 832                 break;
 833 #endif /* CONFIG_BMP_16BPP */
 834 #if defined(CONFIG_BMP_24BMP)
 835         case 24:
 836                 for (i = 0; i < height; ++i) {
 837                         for (j = 0; j < width; j++) {
 838                                 *(fb++) = *(bmap++);
 839                                 *(fb++) = *(bmap++);
 840                                 *(fb++) = *(bmap++);
 841                                 *(fb++) = 0;
 842                         }
 843                         fb -= lcd_line_length + width * (bpix / 8);
 844                 }
 845                 break;
 846 #endif /* CONFIG_BMP_24BPP */
 847 #if defined(CONFIG_BMP_32BPP)
 848         case 32:
 849                 for (i = 0; i < height; ++i) {
 850                         WATCHDOG_RESET();
 851                         for (j = 0; j < width; j++) {
 852                                 fb[3] = *bmap++; /* T */
 853                                 fb[0] = *bmap++; /* B */
 854                                 fb[1] = *bmap++; /* G */
 855                                 fb[2] = *bmap++; /* R */
 856                                 fb += 4;
 857                         }
 858                         bmap += (padded_width - width) * 4;
 859                         fb -= lcd_line_length + width * (bpix / 8);
 860                 }
 861                 break;
 862 #endif /* CONFIG_BMP_32BPP */
 863         };
 864
 865         return 0;
 866 }
 867 #endif
 868
 869 static void *lcd_logo(void)
 870 {
 871 #ifdef CONFIG_SPLASH_SCREEN
 872         char *s;
 873         ulong addr;
 874         static int do_splash = 1;
 875
 876         if (do_splash && (s = getenv("splashimage")) != NULL) {
 877                 int x = 0, y = 0;
 878                 char *end;
 879
 880                 do_splash = 0;
 881
 882                 if (splash_screen_prepare())
 883                         return (void *)lcd_base;
 884
 885                 addr = simple_strtoul (s, &end, 16);
 886                 if (addr == 0 || *end != '\0')
 887                         return lcd_base;
 888
 889                 splash_get_pos(&x, &y);
 890
 891                 if (bmp_display(addr, x, y) == 0)
 892                         return (void *)lcd_base;
 893         }
 894 #endif /* CONFIG_SPLASH_SCREEN */
 895
 896         bitmap_plot(0, 0);
 897
 898 #ifdef CONFIG_LCD_INFO
 899         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 900         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 901         lcd_show_board_info();
 902 #endif /* CONFIG_LCD_INFO */
 903
 904 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 905         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 906 #else
 907         return lcd_base;
 908 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 909 }
 910
 911 #ifdef CONFIG_SPLASHIMAGE_GUARD
 912 static int on_splashimage(const char *name, const char *value, enum env_op op,
 913         int flags)
 914 {
 915         ulong addr;
 916         int aligned;
 917
 918         if (op == env_op_delete)
 919                 return 0;
 920
 921         addr = simple_strtoul(value, NULL, 16);
 922         /* See README.displaying-bmps */
 923         aligned = (addr % 4 == 2);
 924         if (!aligned) {
 925                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 926                 return -1;
 927         }
 928
 929         return 0;
 930 }
 931
 932 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 933 #endif
 934
 935 int lcd_get_pixel_width(void)
 936 {
 937         return panel_info.vl_col;
 938 }
 939
 940 int lcd_get_pixel_height(void)
 941 {
 942         return panel_info.vl_row;
 943 }
 944
 945 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 946 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 947 {
 948 #if LCD_BPP == LCD_COLOR16
 949         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 950                                        panel_info.vl_col, panel_info.vl_row,
 951                                        panel_info.vl_col * 2, "r5g6b5");
 952 #else
 953         return -1;
 954 #endif
 955 }
 956
 957 int lcd_dt_simplefb_add_node(void *blob)
 958 {
 959         static const char compat[] = "simple-framebuffer";
 960         static const char disabled[] = "disabled";
 961         int off, ret;
 962
 963         off = fdt_add_subnode(blob, 0, "framebuffer");
 964         if (off < 0)
 965                 return -1;
 966
 967         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 968         if (ret < 0)
 969                 return -1;
 970
 971         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
 972         if (ret < 0)
 973                 return -1;
 974
 975         return lcd_dt_simplefb_configure_node(blob, off);
 976 }
 977
 978 int lcd_dt_simplefb_enable_existing_node(void *blob)
 979 {
 980         int off;
 981
 982         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
 983         if (off < 0)
 984                 return -1;
 985
 986         return lcd_dt_simplefb_configure_node(blob, off);
 987 }
 988 #endif