common/lcd.c

   1 /*
   2  * Common LCD routines
   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 /* #define DEBUG */
  11 #include <config.h>
  12 #include <common.h>
  13 #include <command.h>
  14 #include <env_callback.h>
  15 #include <linux/types.h>
  16 #include <stdio_dev.h>
  17 #include <lcd.h>
  18 #include <mapmem.h>
  19 #include <watchdog.h>
  20 #include <asm/unaligned.h>
  21 #include <splash.h>
  22 #include <asm/io.h>
  23 #include <asm/unaligned.h>
  24 #include <video_font.h>
  25
  26 #ifdef CONFIG_LCD_LOGO
  27 #include <bmp_logo.h>
  28 #include <bmp_logo_data.h>
  29 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  30 #error Default Color Map overlaps with Logo Color Map
  31 #endif
  32 #endif
  33
  34 #ifdef CONFIG_SANDBOX
  35 #include <asm/sdl.h>
  36 #endif
  37
  38 #ifndef CONFIG_LCD_ALIGNMENT
  39 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  40 #endif
  41
  42 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  43         (LCD_BPP != LCD_COLOR32)
  44 #error Unsupported LCD BPP.
  45 #endif
  46
  47 DECLARE_GLOBAL_DATA_PTR;
  48
  49 static int lcd_init(void *lcdbase);
  50 static void lcd_logo(void);
  51 static void lcd_setfgcolor(int color);
  52 static void lcd_setbgcolor(int color);
  53
  54 static int lcd_color_fg;
  55 static int lcd_color_bg;
  56 int lcd_line_length;
  57 char lcd_is_enabled = 0;
  58 static void *lcd_base;                  /* Start of framebuffer memory  */
  59 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  60
  61 /* Flush LCD activity to the caches */
  62 void lcd_sync(void)
  63 {
  64         /*
  65          * flush_dcache_range() is declared in common.h but it seems that some
  66          * architectures do not actually implement it. Is there a way to find
  67          * out whether it exists? For now, ARM is safe.
  68          */
  69 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  70         int line_length;
  71
  72         if (lcd_flush_dcache)
  73                 flush_dcache_range((u32)lcd_base,
  74                         (u32)(lcd_base + lcd_get_size(&line_length)));
  75 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
  76         static ulong last_sync;
  77
  78         if (get_timer(last_sync) > 10) {
  79                 sandbox_sdl_sync(lcd_base);
  80                 last_sync = get_timer(0);
  81         }
  82 #endif
  83 }
  84
  85 void lcd_set_flush_dcache(int flush)
  86 {
  87         lcd_flush_dcache = (flush != 0);
  88 }
  89
  90 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  91 {
  92         lcd_putc(c);
  93 }
  94
  95 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  96 {
  97         lcd_puts(s);
  98 }
  99
 100 /* Small utility to check that you got the colours right */
 101 #ifdef LCD_TEST_PATTERN
 102
 103 #define N_BLK_VERT      2
 104 #define N_BLK_HOR       3
 105
 106 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 107         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 108         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 109 };
 110
 111 static void test_pattern(void)
 112 {
 113         ushort v_max  = panel_info.vl_row;
 114         ushort h_max  = panel_info.vl_col;
 115         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 116         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 117         ushort v, h;
 118         uchar *pix = (uchar *)lcd_base;
 119
 120         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 121                 h_max, v_max, h_step, v_step);
 122
 123         /* WARNING: Code silently assumes 8bit/pixel */
 124         for (v = 0; v < v_max; ++v) {
 125                 uchar iy = v / v_step;
 126                 for (h = 0; h < h_max; ++h) {
 127                         uchar ix = N_BLK_HOR * iy + h / h_step;
 128                         *pix++ = test_colors[ix];
 129                 }
 130         }
 131 }
 132 #endif /* LCD_TEST_PATTERN */
 133
 134 /*
 135  * With most lcd drivers the line length is set up
 136  * by calculating it from panel_info parameters. Some
 137  * drivers need to calculate the line length differently,
 138  * so make the function weak to allow overriding it.
 139  */
 140 __weak int lcd_get_size(int *line_length)
 141 {
 142         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 143         return *line_length * panel_info.vl_row;
 144 }
 145
 146 /*
 147  * Implement a weak default function for boards that optionally
 148  * need to skip the lcd console initialization.
 149  */
 150 __weak int board_lcd_console_skip(void)
 151 {
 152         /* As default, don't skip cfb init */
 153         return 0;
 154 }
 155
 156 int drv_lcd_init(void)
 157 {
 158         struct stdio_dev lcddev;
 159         int rc;
 160
 161         lcd_base = map_sysmem(gd->fb_base, 0);
 162
 163         lcd_init(lcd_base);
 164
 165         if (board_lcd_console_skip())
 166                 return 0;
 167
 168         /* Device initialization */
 169         memset(&lcddev, 0, sizeof(lcddev));
 170
 171         strcpy(lcddev.name, "lcd");
 172         lcddev.ext   = 0;                       /* No extensions */
 173         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 174         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 175         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 176
 177         rc = stdio_register(&lcddev);
 178
 179         return (rc == 0) ? 1 : rc;
 180 }
 181
 182 void lcd_clear(void)
 183 {
 184         int bg_color;
 185         char *s;
 186         ulong addr;
 187         static int do_splash = 1;
 188 #if LCD_BPP == LCD_COLOR8
 189         /* Setting the palette */
 190         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 191         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 192         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 193         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 194         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 195         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 196         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 197         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 198         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 199 #endif
 200
 201 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 202         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 203         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 204         bg_color = CONSOLE_COLOR_WHITE;
 205 #else
 206         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 207         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 208         bg_color = CONSOLE_COLOR_BLACK;
 209 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 210
 211 #ifdef  LCD_TEST_PATTERN
 212         test_pattern();
 213 #else
 214         /* set framebuffer to background color */
 215 #if (LCD_BPP != LCD_COLOR32)
 216         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 217 #else
 218         u32 *ppix = lcd_base;
 219         u32 i;
 220         for (i = 0;
 221            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 222            i++) {
 223                 *ppix++ = bg_color;
 224         }
 225 #endif
 226 #endif
 227         /* setup text-console */
 228         debug("[LCD] setting up console...\n");
 229         lcd_init_console(lcd_base,
 230                          panel_info.vl_col,
 231                          panel_info.vl_row,
 232                          panel_info.vl_rot);
 233         /* Paint the logo and retrieve LCD base address */
 234         debug("[LCD] Drawing the logo...\n");
 235         if (do_splash) {
 236                 s = getenv("splashimage");
 237                 if (s) {
 238                         do_splash = 0;
 239                         addr = simple_strtoul(s, NULL, 16);
 240                         if (lcd_splash(addr) == 0) {
 241                                 lcd_sync();
 242                                 return;
 243                         }
 244                 }
 245         }
 246
 247         lcd_logo();
 248 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 249         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 250         lcd_init_console((void *)addr, panel_info.vl_col,
 251                          panel_info.vl_row, panel_info.vl_rot);
 252 #endif
 253         lcd_sync();
 254 }
 255
 256 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 257                         char *const argv[])
 258 {
 259         lcd_clear();
 260         return 0;
 261 }
 262 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 263
 264 static int lcd_init(void *lcdbase)
 265 {
 266         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 267         lcd_ctrl_init(lcdbase);
 268
 269         /*
 270          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 271          * the 'lcdbase' argument and uses custom lcd base address
 272          * by setting up gd->fb_base. Check for this condition and fixup
 273          * 'lcd_base' address.
 274          */
 275         if (map_to_sysmem(lcdbase) != gd->fb_base)
 276                 lcd_base = map_sysmem(gd->fb_base, 0);
 277
 278         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 279
 280         lcd_get_size(&lcd_line_length);
 281         lcd_is_enabled = 1;
 282         lcd_clear();
 283         lcd_enable();
 284
 285         /* Initialize the console */
 286         lcd_set_col(0);
 287 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 288         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 289 #else
 290         lcd_set_row(1); /* leave 1 blank line below logo */
 291 #endif
 292
 293         return 0;
 294 }
 295
 296 /*
 297  * This is called early in the system initialization to grab memory
 298  * for the LCD controller.
 299  * Returns new address for monitor, after reserving LCD buffer memory
 300  *
 301  * Note that this is running from ROM, so no write access to global data.
 302  */
 303 ulong lcd_setmem(ulong addr)
 304 {
 305         ulong size;
 306         int line_length;
 307
 308         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 309                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 310
 311         size = lcd_get_size(&line_length);
 312
 313         /* Round up to nearest full page, or MMU section if defined */
 314         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 315         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 316
 317         /* Allocate pages for the frame buffer. */
 318         addr -= size;
 319
 320         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 321               size >> 10, addr);
 322
 323         return addr;
 324 }
 325
 326 static void lcd_setfgcolor(int color)
 327 {
 328         lcd_color_fg = color;
 329 }
 330
 331 int lcd_getfgcolor(void)
 332 {
 333         return lcd_color_fg;
 334 }
 335
 336 static void lcd_setbgcolor(int color)
 337 {
 338         lcd_color_bg = color;
 339 }
 340
 341 int lcd_getbgcolor(void)
 342 {
 343         return lcd_color_bg;
 344 }
 345
 346 #ifdef CONFIG_LCD_LOGO
 347 __weak void lcd_logo_set_cmap(void)
 348 {
 349         int i;
 350         ushort *cmap = configuration_get_cmap();
 351
 352         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 353                 *cmap++ = bmp_logo_palette[i];
 354 }
 355
 356 void lcd_logo_plot(int x, int y)
 357 {
 358         ushort i, j;
 359         uchar *bmap = &bmp_logo_bitmap[0];
 360         unsigned bpix = NBITS(panel_info.vl_bpix);
 361         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 362         ushort *fb16;
 363
 364         debug("Logo: width %d  height %d  colors %d\n",
 365               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 366
 367         if (bpix < 12) {
 368                 WATCHDOG_RESET();
 369                 lcd_logo_set_cmap();
 370                 WATCHDOG_RESET();
 371
 372                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 373                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 374                         bmap += BMP_LOGO_WIDTH;
 375                         fb += panel_info.vl_col;
 376                 }
 377         }
 378         else { /* true color mode */
 379                 u16 col16;
 380                 fb16 = (ushort *)fb;
 381                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 382                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 383                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 384                                 fb16[j] =
 385                                         ((col16 & 0x000F) << 1) |
 386                                         ((col16 & 0x00F0) << 3) |
 387                                         ((col16 & 0x0F00) << 4);
 388                                 }
 389                         bmap += BMP_LOGO_WIDTH;
 390                         fb16 += panel_info.vl_col;
 391                 }
 392         }
 393
 394         WATCHDOG_RESET();
 395         lcd_sync();
 396 }
 397 #else
 398 static inline void lcd_logo_plot(int x, int y) {}
 399 #endif /* CONFIG_LCD_LOGO */
 400
 401 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 402 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 403 #define BMP_ALIGN_CENTER        0x7FFF
 404
 405 static void splash_align_axis(int *axis, unsigned long panel_size,
 406                                         unsigned long picture_size)
 407 {
 408         unsigned long panel_picture_delta = panel_size - picture_size;
 409         unsigned long axis_alignment;
 410
 411         if (*axis == BMP_ALIGN_CENTER)
 412                 axis_alignment = panel_picture_delta / 2;
 413         else if (*axis < 0)
 414                 axis_alignment = panel_picture_delta + *axis + 1;
 415         else
 416                 return;
 417
 418         *axis = max(0, (int)axis_alignment);
 419 }
 420 #endif
 421
 422 #ifdef CONFIG_LCD_BMP_RLE8
 423 #define BMP_RLE8_ESCAPE         0
 424 #define BMP_RLE8_EOL            0
 425 #define BMP_RLE8_EOBMP          1
 426 #define BMP_RLE8_DELTA          2
 427
 428 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 429                                   int cnt)
 430 {
 431         while (cnt > 0) {
 432                 *(*fbp)++ = cmap[*bmap++];
 433                 cnt--;
 434         }
 435 }
 436
 437 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 438 {
 439         ushort *fb = *fbp;
 440         int cnt_8copy = cnt >> 3;
 441
 442         cnt -= cnt_8copy << 3;
 443         while (cnt_8copy > 0) {
 444                 *fb++ = c;
 445                 *fb++ = c;
 446                 *fb++ = c;
 447                 *fb++ = c;
 448                 *fb++ = c;
 449                 *fb++ = c;
 450                 *fb++ = c;
 451                 *fb++ = c;
 452                 cnt_8copy--;
 453         }
 454         while (cnt > 0) {
 455                 *fb++ = c;
 456                 cnt--;
 457         }
 458         *fbp = fb;
 459 }
 460
 461 /*
 462  * Do not call this function directly, must be called from lcd_display_bitmap.
 463  */
 464 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 465                                     uchar *fb, int x_off, int y_off)
 466 {
 467         uchar *bmap;
 468         ulong width, height;
 469         ulong cnt, runlen;
 470         int x, y;
 471         int decode = 1;
 472
 473         width = get_unaligned_le32(&bmp->header.width);
 474         height = get_unaligned_le32(&bmp->header.height);
 475         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 476
 477         x = 0;
 478         y = height - 1;
 479
 480         while (decode) {
 481                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 482                         switch (bmap[1]) {
 483                         case BMP_RLE8_EOL:
 484                                 /* end of line */
 485                                 bmap += 2;
 486                                 x = 0;
 487                                 y--;
 488                                 /* 16bpix, 2-byte per pixel, width should *2 */
 489                                 fb -= (width * 2 + lcd_line_length);
 490                                 break;
 491                         case BMP_RLE8_EOBMP:
 492                                 /* end of bitmap */
 493                                 decode = 0;
 494                                 break;
 495                         case BMP_RLE8_DELTA:
 496                                 /* delta run */
 497                                 x += bmap[2];
 498                                 y -= bmap[3];
 499                                 /* 16bpix, 2-byte per pixel, x should *2 */
 500                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 501                                         * lcd_line_length + (x + x_off) * 2);
 502                                 bmap += 4;
 503                                 break;
 504                         default:
 505                                 /* unencoded run */
 506                                 runlen = bmap[1];
 507                                 bmap += 2;
 508                                 if (y < height) {
 509                                         if (x < width) {
 510                                                 if (x + runlen > width)
 511                                                         cnt = width - x;
 512                                                 else
 513                                                         cnt = runlen;
 514                                                 draw_unencoded_bitmap(
 515                                                         (ushort **)&fb,
 516                                                         bmap, cmap, cnt);
 517                                         }
 518                                         x += runlen;
 519                                 }
 520                                 bmap += runlen;
 521                                 if (runlen & 1)
 522                                         bmap++;
 523                         }
 524                 } else {
 525                         /* encoded run */
 526                         if (y < height) {
 527                                 runlen = bmap[0];
 528                                 if (x < width) {
 529                                         /* aggregate the same code */
 530                                         while (bmap[0] == 0xff &&
 531                                                bmap[2] != BMP_RLE8_ESCAPE &&
 532                                                bmap[1] == bmap[3]) {
 533                                                 runlen += bmap[2];
 534                                                 bmap += 2;
 535                                         }
 536                                         if (x + runlen > width)
 537                                                 cnt = width - x;
 538                                         else
 539                                                 cnt = runlen;
 540                                         draw_encoded_bitmap((ushort **)&fb,
 541                                                 cmap[bmap[1]], cnt);
 542                                 }
 543                                 x += runlen;
 544                         }
 545                         bmap += 2;
 546                 }
 547         }
 548 }
 549 #endif
 550
 551 __weak void fb_put_byte(uchar **fb, uchar **from)
 552 {
 553         *(*fb)++ = *(*from)++;
 554 }
 555
 556 #if defined(CONFIG_BMP_16BPP)
 557 __weak void fb_put_word(uchar **fb, uchar **from)
 558 {
 559         *(*fb)++ = *(*from)++;
 560         *(*fb)++ = *(*from)++;
 561 }
 562 #endif /* CONFIG_BMP_16BPP */
 563
 564 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 565 {
 566         int i;
 567         struct bmp_color_table_entry cte;
 568         ushort *cmap = configuration_get_cmap();
 569
 570         for (i = 0; i < colors; ++i) {
 571                 cte = bmp->color_table[i];
 572                 *cmap = (((cte.red)   << 8) & 0xf800) |
 573                         (((cte.green) << 3) & 0x07e0) |
 574                         (((cte.blue)  >> 3) & 0x001f);
 575 #if defined(CONFIG_MPC823)
 576                 cmap--;
 577 #else
 578                 cmap++;
 579 #endif
 580         }
 581 }
 582
 583 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 584 {
 585         ushort *cmap_base = NULL;
 586         ushort i, j;
 587         uchar *fb;
 588         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 589         uchar *bmap;
 590         ushort padded_width;
 591         unsigned long width, height, byte_width;
 592         unsigned long pwidth = panel_info.vl_col;
 593         unsigned colors, bpix, bmp_bpix;
 594         int hdr_size;
 595         struct bmp_color_table_entry *palette = bmp->color_table;
 596
 597         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 598                 bmp->header.signature[1] == 'M')) {
 599                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 600
 601                 return 1;
 602         }
 603
 604         width = get_unaligned_le32(&bmp->header.width);
 605         height = get_unaligned_le32(&bmp->header.height);
 606         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 607         hdr_size = get_unaligned_le16(&bmp->header.size);
 608         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 609
 610         colors = 1 << bmp_bpix;
 611
 612         bpix = NBITS(panel_info.vl_bpix);
 613
 614         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 615                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 616                         bpix, bmp_bpix);
 617
 618                 return 1;
 619         }
 620
 621         /*
 622          * We support displaying 8bpp BMPs on 16bpp LCDs
 623          * and displaying 24bpp BMPs on 32bpp LCDs
 624          * */
 625         if (bpix != bmp_bpix &&
 626             !(bmp_bpix == 8 && bpix == 16) &&
 627             !(bmp_bpix == 24 && bpix == 32)) {
 628                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 629                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 630                 return 1;
 631         }
 632
 633         debug("Display-bmp: %d x %d  with %d colors, display %d\n",
 634               (int)width, (int)height, (int)colors, 1 << bpix);
 635
 636         if (bmp_bpix == 8)
 637                 lcd_set_cmap(bmp, colors);
 638
 639         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 640
 641 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 642         splash_align_axis(&x, pwidth, width);
 643         splash_align_axis(&y, panel_info.vl_row, height);
 644 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 645
 646         if ((x + width) > pwidth)
 647                 width = pwidth - x;
 648         if ((y + height) > panel_info.vl_row)
 649                 height = panel_info.vl_row - y;
 650
 651         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 652         fb   = (uchar *)(lcd_base +
 653                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 654
 655         switch (bmp_bpix) {
 656         case 1:
 657         case 8: {
 658                 cmap_base = configuration_get_cmap();
 659 #ifdef CONFIG_LCD_BMP_RLE8
 660                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 661                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 662                 if (compression == BMP_BI_RLE8) {
 663                         if (bpix != 16) {
 664                                 /* TODO implement render code for bpix != 16 */
 665                                 printf("Error: only support 16 bpix");
 666                                 return 1;
 667                         }
 668                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 669                         break;
 670                 }
 671 #endif
 672
 673                 if (bpix != 16)
 674                         byte_width = width;
 675                 else
 676                         byte_width = width * 2;
 677
 678                 for (i = 0; i < height; ++i) {
 679                         WATCHDOG_RESET();
 680                         for (j = 0; j < width; j++) {
 681                                 if (bpix != 16) {
 682                                         fb_put_byte(&fb, &bmap);
 683                                 } else {
 684                                         struct bmp_color_table_entry *entry;
 685                                         uint val;
 686
 687                                         if (cmap_base) {
 688                                                 val = cmap_base[*bmap];
 689                                         } else {
 690                                                 entry = &palette[*bmap];
 691                                                 val = entry->blue >> 3 |
 692                                                         entry->green >> 2 << 5 |
 693                                                         entry->red >> 3 << 11;
 694                                         }
 695                                         *(uint16_t *)fb = val;
 696                                         bmap++;
 697                                         fb += sizeof(uint16_t) / sizeof(*fb);
 698                                 }
 699                         }
 700                         bmap += (padded_width - width);
 701                         fb -= byte_width + lcd_line_length;
 702                 }
 703                 break;
 704         }
 705 #if defined(CONFIG_BMP_16BPP)
 706         case 16:
 707                 for (i = 0; i < height; ++i) {
 708                         WATCHDOG_RESET();
 709                         for (j = 0; j < width; j++)
 710                                 fb_put_word(&fb, &bmap);
 711
 712                         bmap += (padded_width - width) * 2;
 713                         fb -= width * 2 + lcd_line_length;
 714                 }
 715                 break;
 716 #endif /* CONFIG_BMP_16BPP */
 717 #if defined(CONFIG_BMP_24BMP)
 718         case 24:
 719                 for (i = 0; i < height; ++i) {
 720                         for (j = 0; j < width; j++) {
 721                                 *(fb++) = *(bmap++);
 722                                 *(fb++) = *(bmap++);
 723                                 *(fb++) = *(bmap++);
 724                                 *(fb++) = 0;
 725                         }
 726                         fb -= lcd_line_length + width * (bpix / 8);
 727                 }
 728                 break;
 729 #endif /* CONFIG_BMP_24BMP */
 730 #if defined(CONFIG_BMP_32BPP)
 731         case 32:
 732                 for (i = 0; i < height; ++i) {
 733                         for (j = 0; j < width; j++) {
 734                                 *(fb++) = *(bmap++);
 735                                 *(fb++) = *(bmap++);
 736                                 *(fb++) = *(bmap++);
 737                                 *(fb++) = *(bmap++);
 738                         }
 739                         fb -= lcd_line_length + width * (bpix / 8);
 740                 }
 741                 break;
 742 #endif /* CONFIG_BMP_32BPP */
 743         default:
 744                 break;
 745         };
 746
 747         lcd_sync();
 748         return 0;
 749 }
 750 #endif
 751
 752 static void lcd_logo(void)
 753 {
 754         lcd_logo_plot(0, 0);
 755
 756 #ifdef CONFIG_LCD_INFO
 757         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 758         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 759         lcd_show_board_info();
 760 #endif /* CONFIG_LCD_INFO */
 761 }
 762
 763 #ifdef CONFIG_SPLASHIMAGE_GUARD
 764 static int on_splashimage(const char *name, const char *value, enum env_op op,
 765         int flags)
 766 {
 767         ulong addr;
 768         int aligned;
 769
 770         if (op == env_op_delete)
 771                 return 0;
 772
 773         addr = simple_strtoul(value, NULL, 16);
 774         /* See README.displaying-bmps */
 775         aligned = (addr % 4 == 2);
 776         if (!aligned) {
 777                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 778                 return -1;
 779         }
 780
 781         return 0;
 782 }
 783
 784 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 785 #endif
 786
 787 int lcd_get_pixel_width(void)
 788 {
 789         return panel_info.vl_col;
 790 }
 791
 792 int lcd_get_pixel_height(void)
 793 {
 794         return panel_info.vl_row;
 795 }