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 static inline ushort *configuration_get_cmap(void)
 399 {
 400 #if defined CONFIG_CPU_PXA
 401         struct pxafb_info *fbi = &panel_info.pxa;
 402         return (ushort *)fbi->palette;
 403 #elif defined(CONFIG_MPC823)
 404         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 405         cpm8xx_t *cp = &(immr->im_cpm);
 406         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 407 #elif defined(CONFIG_ATMEL_LCD)
 408         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 409 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 410         return panel_info.cmap;
 411 #elif defined(CONFIG_LCD_LOGO)
 412         return bmp_logo_palette;
 413 #else
 414         return NULL;
 415 #endif
 416 }
 417
 418 #ifdef CONFIG_LCD_LOGO
 419 void bitmap_plot(int x, int y)
 420 {
 421 #ifdef CONFIG_ATMEL_LCD
 422         uint *cmap = (uint *)bmp_logo_palette;
 423 #else
 424         ushort *cmap = (ushort *)bmp_logo_palette;
 425 #endif
 426         ushort i, j;
 427         uchar *bmap;
 428         uchar *fb;
 429         ushort *fb16;
 430 #if defined(CONFIG_MPC823)
 431         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 432         cpm8xx_t *cp = &(immr->im_cpm);
 433 #endif
 434         unsigned bpix = NBITS(panel_info.vl_bpix);
 435
 436         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 437                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 438                 ARRAY_SIZE(bmp_logo_palette));
 439
 440         bmap = &bmp_logo_bitmap[0];
 441         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 442
 443         if (bpix < 12) {
 444                 /* Leave room for default color map
 445                  * default case: generic system with no cmap (most likely 16bpp)
 446                  * cmap was set to the source palette, so no change is done.
 447                  * This avoids even more ifdefs in the next stanza
 448                  */
 449 #if defined(CONFIG_MPC823)
 450                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 451 #elif defined(CONFIG_ATMEL_LCD)
 452                 cmap = (uint *)configuration_get_cmap();
 453 #else
 454                 cmap = configuration_get_cmap();
 455 #endif
 456
 457                 WATCHDOG_RESET();
 458
 459                 /* Set color map */
 460                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 461                         ushort colreg = bmp_logo_palette[i];
 462 #ifdef CONFIG_ATMEL_LCD
 463                         uint lut_entry;
 464 #ifdef CONFIG_ATMEL_LCD_BGR555
 465                         lut_entry = ((colreg & 0x000F) << 11) |
 466                                         ((colreg & 0x00F0) <<  2) |
 467                                         ((colreg & 0x0F00) >>  7);
 468 #else /* CONFIG_ATMEL_LCD_RGB565 */
 469                         lut_entry = ((colreg & 0x000F) << 1) |
 470                                         ((colreg & 0x00F0) << 3) |
 471                                         ((colreg & 0x0F00) << 4);
 472 #endif
 473                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 474                         cmap++;
 475 #else /* !CONFIG_ATMEL_LCD */
 476                         *cmap++ = colreg;
 477 #endif /* CONFIG_ATMEL_LCD */
 478                 }
 479
 480                 WATCHDOG_RESET();
 481
 482                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 483                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 484                         bmap += BMP_LOGO_WIDTH;
 485                         fb += panel_info.vl_col;
 486                 }
 487         } else if (NBITS(panel_info.vl_bpix) == 16) {
 488                 u16 col16;
 489                 fb16 = (ushort *)fb;
 490                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 491                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 492                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 493                                 fb16[j] =
 494                                         ((col16 & 0x000F) << 1) |
 495                                         ((col16 & 0x00F0) << 3) |
 496                                         ((col16 & 0x0F00) << 4);
 497                                 }
 498                         bmap += BMP_LOGO_WIDTH;
 499                         fb16 += panel_info.vl_col;
 500                 }
 501         } else { /* true color mode */
 502                 u16 col16;
 503                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 504
 505                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 506                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 507                                 col16 = bmp_logo_palette[bmap[j] - 16];
 508                                 fb32[j] =
 509                                         ((col16 & 0x000F) << 4) |
 510                                         ((col16 & 0x00F0) << 8) |
 511                                         ((col16 & 0x0F00) << 12);
 512                                 }
 513                         bmap += BMP_LOGO_WIDTH;
 514                         fb32 += panel_info.vl_col;
 515                 }
 516         }
 517
 518         WATCHDOG_RESET();
 519         lcd_sync();
 520 }
 521 #else
 522 static inline void bitmap_plot(int x, int y) {}
 523 #endif /* CONFIG_LCD_LOGO */
 524
 525 /*----------------------------------------------------------------------*/
 526 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 527 /*
 528  * Display the BMP file located at address bmp_image.
 529  * Only uncompressed.
 530  */
 531
 532 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 533 #define BMP_ALIGN_CENTER        0x7FFF
 534
 535 static void splash_align_axis(int *axis, unsigned long panel_size,
 536                                         unsigned long picture_size)
 537 {
 538         unsigned long panel_picture_delta = panel_size - picture_size;
 539         unsigned long axis_alignment;
 540
 541         if (*axis == BMP_ALIGN_CENTER)
 542                 axis_alignment = panel_picture_delta / 2;
 543         else if (*axis < 0)
 544                 axis_alignment = panel_picture_delta + *axis + 1;
 545         else
 546                 return;
 547
 548         *axis = max(0, (int)axis_alignment);
 549 }
 550 #endif
 551
 552
 553 #ifdef CONFIG_LCD_BMP_RLE8
 554
 555 #define BMP_RLE8_ESCAPE         0
 556 #define BMP_RLE8_EOL            0
 557 #define BMP_RLE8_EOBMP          1
 558 #define BMP_RLE8_DELTA          2
 559
 560 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 561                                   int cnt)
 562 {
 563         while (cnt > 0) {
 564                 *(*fbp)++ = cmap[*bmap++];
 565                 cnt--;
 566         }
 567 }
 568
 569 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 570 {
 571         ushort *fb = *fbp;
 572         int cnt_8copy = cnt >> 3;
 573
 574         cnt -= cnt_8copy << 3;
 575         while (cnt_8copy > 0) {
 576                 *fb++ = c;
 577                 *fb++ = c;
 578                 *fb++ = c;
 579                 *fb++ = c;
 580                 *fb++ = c;
 581                 *fb++ = c;
 582                 *fb++ = c;
 583                 *fb++ = c;
 584                 cnt_8copy--;
 585         }
 586         while (cnt > 0) {
 587                 *fb++ = c;
 588                 cnt--;
 589         }
 590         *fbp = fb;
 591 }
 592
 593 /*
 594  * Do not call this function directly, must be called from lcd_display_bitmap.
 595  */
 596 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 597                                     int x_off, int y_off)
 598 {
 599         uchar *bmap;
 600         ulong width, height;
 601         ulong cnt, runlen;
 602         int x, y;
 603         int decode = 1;
 604
 605         width = get_unaligned_le32(&bmp->header.width);
 606         height = get_unaligned_le32(&bmp->header.height);
 607         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 608
 609         x = 0;
 610         y = height - 1;
 611
 612         while (decode) {
 613                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 614                         switch (bmap[1]) {
 615                         case BMP_RLE8_EOL:
 616                                 /* end of line */
 617                                 bmap += 2;
 618                                 x = 0;
 619                                 y--;
 620                                 /* 16bpix, 2-byte per pixel, width should *2 */
 621                                 fb -= (width * 2 + lcd_line_length);
 622                                 break;
 623                         case BMP_RLE8_EOBMP:
 624                                 /* end of bitmap */
 625                                 decode = 0;
 626                                 break;
 627                         case BMP_RLE8_DELTA:
 628                                 /* delta run */
 629                                 x += bmap[2];
 630                                 y -= bmap[3];
 631                                 /* 16bpix, 2-byte per pixel, x should *2 */
 632                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 633                                         * lcd_line_length + (x + x_off) * 2);
 634                                 bmap += 4;
 635                                 break;
 636                         default:
 637                                 /* unencoded run */
 638                                 runlen = bmap[1];
 639                                 bmap += 2;
 640                                 if (y < height) {
 641                                         if (x < width) {
 642                                                 if (x + runlen > width)
 643                                                         cnt = width - x;
 644                                                 else
 645                                                         cnt = runlen;
 646                                                 draw_unencoded_bitmap(
 647                                                         (ushort **)&fb,
 648                                                         bmap, cmap, cnt);
 649                                         }
 650                                         x += runlen;
 651                                 }
 652                                 bmap += runlen;
 653                                 if (runlen & 1)
 654                                         bmap++;
 655                         }
 656                 } else {
 657                         /* encoded run */
 658                         if (y < height) {
 659                                 runlen = bmap[0];
 660                                 if (x < width) {
 661                                         /* aggregate the same code */
 662                                         while (bmap[0] == 0xff &&
 663                                                bmap[2] != BMP_RLE8_ESCAPE &&
 664                                                bmap[1] == bmap[3]) {
 665                                                 runlen += bmap[2];
 666                                                 bmap += 2;
 667                                         }
 668                                         if (x + runlen > width)
 669                                                 cnt = width - x;
 670                                         else
 671                                                 cnt = runlen;
 672                                         draw_encoded_bitmap((ushort **)&fb,
 673                                                 cmap[bmap[1]], cnt);
 674                                 }
 675                                 x += runlen;
 676                         }
 677                         bmap += 2;
 678                 }
 679         }
 680 }
 681 #endif
 682
 683 #if defined(CONFIG_MPC823)
 684 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 685 #else
 686 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 687 #endif
 688
 689 #if defined(CONFIG_BMP_16BPP)
 690 #if defined(CONFIG_ATMEL_LCD_BGR555)
 691 static inline void fb_put_word(uchar **fb, uchar **from)
 692 {
 693         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 694         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 695         *from += 2;
 696 }
 697 #else
 698 static inline void fb_put_word(uchar **fb, uchar **from)
 699 {
 700         *(*fb)++ = *(*from)++;
 701         *(*fb)++ = *(*from)++;
 702 }
 703 #endif
 704 #endif /* CONFIG_BMP_16BPP */
 705
 706 static inline bmp_color_table_entry_t *get_color_table(bmp_image_t *bmp)
 707 {
 708         bmp_header_t *bh = &bmp->header;
 709         return (void *)bmp + offsetof(bmp_header_t, size) + bh->size;
 710 }
 711
 712 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 713 {
 714         ushort *cmap = NULL;
 715         ushort *cmap_base = NULL;
 716         ushort i, j;
 717         uchar *fb;
 718         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 719         uchar *bmap;
 720         ushort padded_width;
 721         unsigned long width, height;
 722         unsigned long pwidth = panel_info.vl_col;
 723         unsigned long long colors;
 724         unsigned bpix, bmp_bpix;
 725         bmp_color_table_entry_t *cte;
 726
 727         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 728                 bmp->header.signature[1] == 'M')) {
 729                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 730
 731                 return 1;
 732         }
 733
 734         width = get_unaligned_le32(&bmp->header.width);
 735         height = get_unaligned_le32(&bmp->header.height);
 736         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 737
 738         colors = 1 << bmp_bpix;
 739
 740         bpix = NBITS(panel_info.vl_bpix);
 741
 742         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 743                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 744                         bpix, bmp_bpix);
 745
 746                 return 1;
 747         }
 748
 749         /*
 750          * We support displaying 8bpp BMPs on 16bpp LCDs
 751          * and displaying 24bpp BMPs on 32bpp LCDs
 752          * */
 753         if (bpix != bmp_bpix &&
 754             !(bmp_bpix == 8 && bpix == 16) &&
 755             !(bmp_bpix == 24 && bpix == 32)) {
 756                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 757                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 758                 return 1;
 759         }
 760
 761         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 762                 width, height, colors);
 763
 764         cte = get_color_table(bmp);
 765         if (bmp_bpix == 8) {
 766                 cmap = configuration_get_cmap();
 767                 cmap_base = cmap;
 768
 769                 /* Set color map */
 770                 for (i = 0; i < colors; ++i) {
 771 #if !defined(CONFIG_ATMEL_LCD)
 772                         ushort colreg =
 773                                 ( ((cte[i].red)   << 8) & 0xf800) |
 774                                 ( ((cte[i].green) << 3) & 0x07e0) |
 775                                 ( ((cte[i].blue)  >> 3) & 0x001f) ;
 776                         *cmap = colreg;
 777 #if defined(CONFIG_MPC823)
 778                         cmap--;
 779 #else
 780                         cmap++;
 781 #endif
 782 #else /* CONFIG_ATMEL_LCD */
 783                         lcd_setcolreg(i, cte[i].red, cte[i].green, cte[i].blue);
 784 #endif
 785                 }
 786         }
 787
 788         padded_width = ALIGN(width, 4);
 789
 790 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 791         splash_align_axis(&x, pwidth, width);
 792         splash_align_axis(&y, panel_info.vl_row, height);
 793 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 794         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 795
 796         if ((x + width) > pwidth)
 797                 width = pwidth - x;
 798         if ((y + height) > panel_info.vl_row) {
 799                 height = panel_info.vl_row - y;
 800                 bmap += (panel_info.vl_row - y) * padded_width;
 801         }
 802
 803         fb   = (uchar *)(lcd_base +
 804                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 805
 806         switch (bmp_bpix) {
 807         case 1: /* pass through */
 808         case 8: {
 809 #ifdef CONFIG_LCD_BMP_RLE8
 810                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 811                 if (compression == BMP_BI_RLE8) {
 812                         if (bpix != 16) {
 813                                 /* TODO implement render code for bpix != 16 */
 814                                 printf("Error: only support 16 bpix");
 815                                 return 1;
 816                         }
 817                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 818                         break;
 819                 }
 820 #endif
 821
 822                 for (i = 0; i < height; ++i) {
 823                         WATCHDOG_RESET();
 824                         for (j = 0; j < width; j++) {
 825                                 if (bpix == 32) {
 826                                         int i = *bmap++;
 827
 828                                         fb[3] = 0; /* T */
 829                                         fb[0] = cte[i].blue;
 830                                         fb[1] = cte[i].green;
 831                                         fb[2] = cte[i].red;
 832                                         fb += sizeof(uint32_t) / sizeof(*fb);
 833                                 } else if (bpix == 16) {
 834                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 835                                         fb += sizeof(uint16_t) / sizeof(*fb);
 836                                 } else {
 837                                         FB_PUT_BYTE(fb, bmap);
 838                                 }
 839                         }
 840                         if (bpix > 8) {
 841                                 bmap += padded_width - width;
 842                                 fb   -= width * bpix / 8 + lcd_line_length;
 843                         } else {
 844                                 bmap += padded_width;
 845                                 fb -= lcd_line_length;
 846                         }
 847                 }
 848                 break;
 849         }
 850 #if defined(CONFIG_BMP_16BPP)
 851         case 16:
 852                 for (i = 0; i < height; ++i) {
 853                         WATCHDOG_RESET();
 854                         for (j = 0; j < width; j++)
 855                                 fb_put_word(&fb, &bmap);
 856
 857                         bmap += (padded_width - width) * 2;
 858                         fb -= width * 2 + lcd_line_length;
 859                 }
 860                 break;
 861 #endif /* CONFIG_BMP_16BPP */
 862 #if defined(CONFIG_BMP_24BMP)
 863         case 24:
 864                 for (i = 0; i < height; ++i) {
 865                         for (j = 0; j < width; j++) {
 866                                 *(fb++) = *(bmap++);
 867                                 *(fb++) = *(bmap++);
 868                                 *(fb++) = *(bmap++);
 869                                 *(fb++) = 0;
 870                         }
 871                         fb -= lcd_line_length + width * (bpix / 8);
 872                 }
 873                 break;
 874 #endif /* CONFIG_BMP_24BPP */
 875 #if defined(CONFIG_BMP_32BPP)
 876         case 32:
 877                 for (i = 0; i < height; ++i) {
 878                         WATCHDOG_RESET();
 879                         for (j = 0; j < width; j++) {
 880                                 fb[3] = *bmap++; /* T */
 881                                 fb[0] = *bmap++; /* B */
 882                                 fb[1] = *bmap++; /* G */
 883                                 fb[2] = *bmap++; /* R */
 884                                 fb += 4;
 885                         }
 886                         bmap += (padded_width - width) * 4;
 887                         fb -= lcd_line_length + width * (bpix / 8);
 888                 }
 889                 break;
 890 #endif /* CONFIG_BMP_32BPP */
 891         };
 892
 893         return 0;
 894 }
 895 #endif
 896
 897 static void *lcd_logo(void)
 898 {
 899 #ifdef CONFIG_SPLASH_SCREEN
 900         char *s;
 901         ulong addr;
 902         static int do_splash = 1;
 903
 904         if (do_splash && (s = getenv("splashimage")) != NULL) {
 905                 int x = 0, y = 0;
 906                 char *end;
 907
 908                 do_splash = 0;
 909
 910                 if (splash_screen_prepare())
 911                         return (void *)lcd_base;
 912
 913                 addr = simple_strtoul (s, &end, 16);
 914                 if (addr == 0 || *end != '\0')
 915                         return lcd_base;
 916
 917                 splash_get_pos(&x, &y);
 918
 919                 if (bmp_display(addr, x, y) == 0)
 920                         return (void *)lcd_base;
 921         }
 922 #endif /* CONFIG_SPLASH_SCREEN */
 923
 924         bitmap_plot(0, 0);
 925
 926 #ifdef CONFIG_LCD_INFO
 927         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 928         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 929         lcd_show_board_info();
 930 #endif /* CONFIG_LCD_INFO */
 931
 932 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 933         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 934 #else
 935         return lcd_base;
 936 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 937 }
 938
 939 #ifdef CONFIG_SPLASHIMAGE_GUARD
 940 static int on_splashimage(const char *name, const char *value, enum env_op op,
 941         int flags)
 942 {
 943         ulong addr;
 944         int aligned;
 945
 946         if (op == env_op_delete)
 947                 return 0;
 948
 949         addr = simple_strtoul(value, NULL, 16);
 950         /* See README.displaying-bmps */
 951         aligned = (addr % 4 == 2);
 952         if (!aligned) {
 953                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 954                 return -1;
 955         }
 956
 957         return 0;
 958 }
 959
 960 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 961 #endif
 962
 963 int lcd_get_pixel_width(void)
 964 {
 965         return panel_info.vl_col;
 966 }
 967
 968 int lcd_get_pixel_height(void)
 969 {
 970         return panel_info.vl_row;
 971 }
 972
 973 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 974 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 975 {
 976 #if LCD_BPP == LCD_COLOR16
 977         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 978                                        panel_info.vl_col, panel_info.vl_row,
 979                                        panel_info.vl_col * 2, "r5g6b5");
 980 #else
 981         return -1;
 982 #endif
 983 }
 984
 985 int lcd_dt_simplefb_add_node(void *blob)
 986 {
 987         static const char compat[] = "simple-framebuffer";
 988         static const char disabled[] = "disabled";
 989         int off, ret;
 990
 991         off = fdt_add_subnode(blob, 0, "framebuffer");
 992         if (off < 0)
 993                 return -1;
 994
 995         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 996         if (ret < 0)
 997                 return -1;
 998
 999         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1000         if (ret < 0)
1001                 return -1;
1002
1003         return lcd_dt_simplefb_configure_node(blob, off);
1004 }
1005
1006 int lcd_dt_simplefb_enable_existing_node(void *blob)
1007 {
1008         int off;
1009
1010         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1011         if (off < 0)
1012                 return -1;
1013
1014         return lcd_dt_simplefb_configure_node(blob, off);
1015 }
1016 #endif