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 <watchdog.h>
  19 #include <asm/unaligned.h>
  20 #include <splash.h>
  21 #include <asm/io.h>
  22 #include <asm/unaligned.h>
  23 #include <video_font.h>
  24
  25 #ifdef CONFIG_LCD_LOGO
  26 #include <bmp_logo.h>
  27 #include <bmp_logo_data.h>
  28 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  29 #error Default Color Map overlaps with Logo Color Map
  30 #endif
  31 #endif
  32
  33 #ifdef CONFIG_SANDBOX
  34 #include <asm/sdl.h>
  35 #endif
  36
  37 #ifndef CONFIG_LCD_ALIGNMENT
  38 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  39 #endif
  40
  41 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  42         (LCD_BPP != LCD_COLOR32)
  43 #error Unsupported LCD BPP.
  44 #endif
  45
  46 DECLARE_GLOBAL_DATA_PTR;
  47
  48 static int lcd_init(void *lcdbase);
  49 static void lcd_logo(void);
  50 static void lcd_setfgcolor(int color);
  51 static void lcd_setbgcolor(int color);
  52
  53 static int lcd_color_fg;
  54 static int lcd_color_bg;
  55 int lcd_line_length;
  56 char lcd_is_enabled = 0;
  57 static void *lcd_base;                  /* Start of framebuffer memory  */
  58 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  59
  60 /* Flush LCD activity to the caches */
  61 void lcd_sync(void)
  62 {
  63         /*
  64          * flush_dcache_range() is declared in common.h but it seems that some
  65          * architectures do not actually implement it. Is there a way to find
  66          * out whether it exists? For now, ARM is safe.
  67          */
  68 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  69         int line_length;
  70
  71         if (lcd_flush_dcache)
  72                 flush_dcache_range((u32)lcd_base,
  73                         (u32)(lcd_base + lcd_get_size(&line_length)));
  74 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
  75         static ulong last_sync;
  76
  77         if (get_timer(last_sync) > 10) {
  78                 sandbox_sdl_sync(lcd_base);
  79                 last_sync = get_timer(0);
  80         }
  81 #endif
  82 }
  83
  84 void lcd_set_flush_dcache(int flush)
  85 {
  86         lcd_flush_dcache = (flush != 0);
  87 }
  88
  89 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  90 {
  91         lcd_putc(c);
  92 }
  93
  94 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
  95 {
  96         lcd_puts(s);
  97 }
  98
  99 /* Small utility to check that you got the colours right */
 100 #ifdef LCD_TEST_PATTERN
 101
 102 #define N_BLK_VERT      2
 103 #define N_BLK_HOR       3
 104
 105 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 106         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 107         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 108 };
 109
 110 #if LCD_BPP == LCD_COLOR8
 111 typedef uchar pix_t;
 112 #elif LCD_BPP == LCD_COLOR16
 113 typedef ushort pix_t;
 114 #elif LCD_BPP == LCD_COLOR32
 115 typedef ulong pix_t;
 116 #else
 117 #error Unsupported pixelformat
 118 #endif
 119
 120 static void test_pattern(void)
 121 {
 122         ushort v_max  = panel_info.vl_row;
 123         ushort h_max  = panel_info.vl_col;
 124         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 125         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 126         ushort v, h;
 127         pix_t *pix = lcd_base;
 128
 129         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 130                 h_max, v_max, h_step, v_step);
 131
 132         /* WARNING: Code silently assumes 8bit/pixel */
 133         for (v = 0; v < v_max; ++v) {
 134                 uchar iy = v / v_step;
 135                 for (h = 0; h < h_max; ++h) {
 136                         uchar ix = N_BLK_HOR * iy + h / h_step;
 137                         *pix++ = test_colors[ix];
 138                 }
 139         }
 140 }
 141 #endif /* LCD_TEST_PATTERN */
 142
 143 /*
 144  * With most lcd drivers the line length is set up
 145  * by calculating it from panel_info parameters. Some
 146  * drivers need to calculate the line length differently,
 147  * so make the function weak to allow overriding it.
 148  */
 149 __weak int lcd_get_size(int *line_length)
 150 {
 151         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 152         return *line_length * panel_info.vl_row;
 153 }
 154
 155 int drv_lcd_init(void)
 156 {
 157         struct stdio_dev lcddev;
 158         int rc;
 159
 160         lcd_base = map_sysmem(gd->fb_base, 0);
 161
 162         lcd_init(lcd_base);
 163
 164         /* Device initialization */
 165         memset(&lcddev, 0, sizeof(lcddev));
 166
 167         strcpy(lcddev.name, "lcd");
 168         lcddev.ext   = 0;                       /* No extensions */
 169         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 170         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 171         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 172
 173         rc = stdio_register(&lcddev);
 174
 175         return (rc == 0) ? 1 : rc;
 176 }
 177
 178 void lcd_clear(void)
 179 {
 180         short console_rows, console_cols;
 181         int bg_color;
 182         char *s;
 183         ulong addr;
 184         static int do_splash = 1;
 185 #if LCD_BPP == LCD_COLOR8
 186         /* Setting the palette */
 187         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 188         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 189         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 190         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 191         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 192         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 193         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 194         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 195         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 196 #endif
 197
 198 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 199         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 200         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 201         bg_color = CONSOLE_COLOR_WHITE;
 202 #else
 203         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 204         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 205         bg_color = CONSOLE_COLOR_BLACK;
 206 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 207
 208 #ifdef  LCD_TEST_PATTERN
 209         test_pattern();
 210 #else
 211         /* set framebuffer to background color */
 212 #if (LCD_BPP != LCD_COLOR32)
 213         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 214 #else
 215         u32 *ppix = lcd_base;
 216         u32 i;
 217         for (i = 0;
 218            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 219            i++) {
 220                 *ppix++ = bg_color;
 221         }
 222 #endif
 223 #endif
 224         /* Paint the logo and retrieve LCD base address */
 225         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 226 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 227         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 228         console_rows /= VIDEO_FONT_HEIGHT;
 229 #else
 230         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 231 #endif
 232         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 233         lcd_init_console(lcd_base, console_rows, console_cols);
 234         if (do_splash) {
 235                 s = getenv("splashimage");
 236                 if (s) {
 237                         do_splash = 0;
 238                         addr = simple_strtoul(s, NULL, 16);
 239                         if (lcd_splash(addr) == 0) {
 240                                 lcd_sync();
 241                                 return;
 242                         }
 243                 }
 244         }
 245
 246         lcd_logo();
 247 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 248         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 249         lcd_init_console((void *)addr, console_rows, console_cols);
 250 #endif
 251         lcd_sync();
 252 }
 253
 254 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 255                         char *const argv[])
 256 {
 257         lcd_clear();
 258         return 0;
 259 }
 260 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 261
 262 static int lcd_init(void *lcdbase)
 263 {
 264         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 265                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 266                 lcdbase);
 267
 268         lcd_ctrl_init(lcdbase);
 269
 270         /*
 271          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 272          * the 'lcdbase' argument and uses custom lcd base address
 273          * by setting up gd->fb_base. Check for this condition and fixup
 274          * 'lcd_base' address.
 275          */
 276         if (map_to_sysmem(lcdbase) != gd->fb_base)
 277                 lcd_base = map_sysmem(gd->fb_base, 0);
 278
 279         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 280
 281         lcd_get_size(&lcd_line_length);
 282         lcd_is_enabled = 1;
 283         lcd_clear();
 284         lcd_enable();
 285
 286         /* Initialize the console */
 287         lcd_set_col(0);
 288 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 289         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 290 #else
 291         lcd_set_row(1); /* leave 1 blank line below logo */
 292 #endif
 293
 294         return 0;
 295 }
 296
 297 /*
 298  * This is called early in the system initialization to grab memory
 299  * for the LCD controller.
 300  * Returns new address for monitor, after reserving LCD buffer memory
 301  *
 302  * Note that this is running from ROM, so no write access to global data.
 303  */
 304 ulong lcd_setmem(ulong addr)
 305 {
 306         ulong size;
 307         int line_length;
 308
 309         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 310                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 311
 312         size = lcd_get_size(&line_length);
 313
 314         /* Round up to nearest full page, or MMU section if defined */
 315         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 316         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 317
 318         /* Allocate pages for the frame buffer. */
 319         addr -= size;
 320
 321         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 322               size >> 10, addr);
 323
 324         return addr;
 325 }
 326
 327 static void lcd_setfgcolor(int color)
 328 {
 329         lcd_color_fg = color;
 330 }
 331
 332 int lcd_getfgcolor(void)
 333 {
 334         return lcd_color_fg;
 335 }
 336
 337 static void lcd_setbgcolor(int color)
 338 {
 339         lcd_color_bg = color;
 340 }
 341
 342 int lcd_getbgcolor(void)
 343 {
 344         return lcd_color_bg;
 345 }
 346
 347 #ifdef CONFIG_LCD_LOGO
 348 __weak void lcd_logo_set_cmap(void)
 349 {
 350         int i;
 351         ushort *cmap = configuration_get_cmap();
 352
 353         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 354                 *cmap++ = bmp_logo_palette[i];
 355 }
 356
 357 void lcd_logo_plot(int x, int y)
 358 {
 359         ushort i, j;
 360         uchar *bmap = &bmp_logo_bitmap[0];
 361         unsigned bpix = NBITS(panel_info.vl_bpix);
 362         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 363         ushort *fb16;
 364
 365         debug("Logo: width %d  height %d  colors %d\n",
 366               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 367
 368         if (bpix < 12) {
 369                 WATCHDOG_RESET();
 370                 lcd_logo_set_cmap();
 371                 WATCHDOG_RESET();
 372
 373                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 374                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 375                         bmap += BMP_LOGO_WIDTH;
 376                         fb += panel_info.vl_col;
 377                 }
 378         } else if (NBITS(panel_info.vl_bpix) == 16) {
 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         } else { /* true color mode */
 393                 u16 col16;
 394                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 395
 396                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 397                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 398                                 col16 = bmp_logo_palette[bmap[j] - 16];
 399                                 fb32[j] =
 400                                         ((col16 & 0x000F) << 4) |
 401                                         ((col16 & 0x00F0) << 8) |
 402                                         ((col16 & 0x0F00) << 12);
 403                                 }
 404                         bmap += BMP_LOGO_WIDTH;
 405                         fb32 += panel_info.vl_col;
 406                 }
 407         }
 408
 409         WATCHDOG_RESET();
 410         lcd_sync();
 411 }
 412 #else
 413 static inline void lcd_logo_plot(int x, int y) {}
 414 #endif /* CONFIG_LCD_LOGO */
 415
 416 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 417 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 418 #define BMP_ALIGN_CENTER        0x7FFF
 419
 420 static void splash_align_axis(int *axis, unsigned long panel_size,
 421                                         unsigned long picture_size)
 422 {
 423         unsigned long panel_picture_delta = panel_size - picture_size;
 424         unsigned long axis_alignment;
 425
 426         if (*axis == BMP_ALIGN_CENTER)
 427                 axis_alignment = panel_picture_delta / 2;
 428         else if (*axis < 0)
 429                 axis_alignment = panel_picture_delta + *axis + 1;
 430         else
 431                 return;
 432
 433         *axis = max(0, (int)axis_alignment);
 434 }
 435 #endif
 436
 437 #ifdef CONFIG_LCD_BMP_RLE8
 438 #define BMP_RLE8_ESCAPE         0
 439 #define BMP_RLE8_EOL            0
 440 #define BMP_RLE8_EOBMP          1
 441 #define BMP_RLE8_DELTA          2
 442
 443 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 444                                   int cnt)
 445 {
 446         while (cnt > 0) {
 447                 *(*fbp)++ = cmap[*bmap++];
 448                 cnt--;
 449         }
 450 }
 451
 452 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 453 {
 454         ushort *fb = *fbp;
 455         int cnt_8copy = cnt >> 3;
 456
 457         cnt -= cnt_8copy << 3;
 458         while (cnt_8copy > 0) {
 459                 *fb++ = c;
 460                 *fb++ = c;
 461                 *fb++ = c;
 462                 *fb++ = c;
 463                 *fb++ = c;
 464                 *fb++ = c;
 465                 *fb++ = c;
 466                 *fb++ = c;
 467                 cnt_8copy--;
 468         }
 469         while (cnt > 0) {
 470                 *fb++ = c;
 471                 cnt--;
 472         }
 473         *fbp = fb;
 474 }
 475
 476 /*
 477  * Do not call this function directly, must be called from lcd_display_bitmap.
 478  */
 479 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 480                                     int x_off, int y_off)
 481 {
 482         uchar *bmap;
 483         ulong width, height;
 484         ulong cnt, runlen;
 485         int x, y;
 486         int decode = 1;
 487
 488         width = get_unaligned_le32(&bmp->header.width);
 489         height = get_unaligned_le32(&bmp->header.height);
 490         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 491
 492         x = 0;
 493         y = height - 1;
 494
 495         while (decode) {
 496                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 497                         switch (bmap[1]) {
 498                         case BMP_RLE8_EOL:
 499                                 /* end of line */
 500                                 bmap += 2;
 501                                 x = 0;
 502                                 y--;
 503                                 /* 16bpix, 2-byte per pixel, width should *2 */
 504                                 fb -= (width * 2 + lcd_line_length);
 505                                 break;
 506                         case BMP_RLE8_EOBMP:
 507                                 /* end of bitmap */
 508                                 decode = 0;
 509                                 break;
 510                         case BMP_RLE8_DELTA:
 511                                 /* delta run */
 512                                 x += bmap[2];
 513                                 y -= bmap[3];
 514                                 /* 16bpix, 2-byte per pixel, x should *2 */
 515                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 516                                         * lcd_line_length + (x + x_off) * 2);
 517                                 bmap += 4;
 518                                 break;
 519                         default:
 520                                 /* unencoded run */
 521                                 runlen = bmap[1];
 522                                 bmap += 2;
 523                                 if (y < height) {
 524                                         if (x < width) {
 525                                                 if (x + runlen > width)
 526                                                         cnt = width - x;
 527                                                 else
 528                                                         cnt = runlen;
 529                                                 draw_unencoded_bitmap(
 530                                                         (ushort **)&fb,
 531                                                         bmap, cmap, cnt);
 532                                         }
 533                                         x += runlen;
 534                                 }
 535                                 bmap += runlen;
 536                                 if (runlen & 1)
 537                                         bmap++;
 538                         }
 539                 } else {
 540                         /* encoded run */
 541                         if (y < height) {
 542                                 runlen = bmap[0];
 543                                 if (x < width) {
 544                                         /* aggregate the same code */
 545                                         while (bmap[0] == 0xff &&
 546                                                bmap[2] != BMP_RLE8_ESCAPE &&
 547                                                bmap[1] == bmap[3]) {
 548                                                 runlen += bmap[2];
 549                                                 bmap += 2;
 550                                         }
 551                                         if (x + runlen > width)
 552                                                 cnt = width - x;
 553                                         else
 554                                                 cnt = runlen;
 555                                         draw_encoded_bitmap((ushort **)&fb,
 556                                                 cmap[bmap[1]], cnt);
 557                                 }
 558                                 x += runlen;
 559                         }
 560                         bmap += 2;
 561                 }
 562         }
 563 }
 564 #endif
 565
 566 __weak void fb_put_byte(uchar **fb, uchar **from)
 567 {
 568         *(*fb)++ = *(*from)++;
 569 }
 570
 571 #if defined(CONFIG_BMP_16BPP)
 572 __weak void fb_put_word(uchar **fb, uchar **from)
 573 {
 574         *(*fb)++ = *(*from)++;
 575         *(*fb)++ = *(*from)++;
 576 }
 577 #endif /* CONFIG_BMP_16BPP */
 578
 579 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 580 {
 581         int i;
 582         bmp_color_table_entry_t cte;
 583         ushort *cmap = configuration_get_cmap();
 584
 585         for (i = 0; i < colors; ++i) {
 586                 cte = bmp->color_table[i];
 587                 *cmap = (((cte.red)   << 8) & 0xf800) |
 588                         (((cte.green) << 3) & 0x07e0) |
 589                         (((cte.blue)  >> 3) & 0x001f);
 590 #if defined(CONFIG_MPC823)
 591                 cmap--;
 592 #else
 593                 cmap++;
 594 #endif
 595         }
 596 }
 597
 598 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 599 {
 600         ushort *cmap_base = NULL;
 601         ushort i, j;
 602         uchar *fb;
 603         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 604         uchar *bmap;
 605         ushort padded_width;
 606         unsigned long width, height;
 607         unsigned long pwidth = panel_info.vl_col;
 608         unsigned long long colors;
 609         unsigned bpix, bmp_bpix;
 610         bmp_color_table_entry_t *cte;
 611
 612         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 613                 bmp->header.signature[1] == 'M')) {
 614                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 615
 616                 return 1;
 617         }
 618
 619         width = get_unaligned_le32(&bmp->header.width);
 620         height = get_unaligned_le32(&bmp->header.height);
 621         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 622
 623         colors = 1 << bmp_bpix;
 624
 625         bpix = NBITS(panel_info.vl_bpix);
 626
 627         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 628                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 629                         bpix, bmp_bpix);
 630
 631                 return 1;
 632         }
 633
 634         /*
 635          * We support displaying 8bpp BMPs on 16bpp LCDs
 636          * and displaying 24bpp BMPs on 32bpp LCDs
 637          * */
 638         if (bpix != bmp_bpix &&
 639             !(bmp_bpix == 8 && bpix == 16) &&
 640             !(bmp_bpix == 24 && bpix == 32)) {
 641                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 642                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 643                 return 1;
 644         }
 645
 646         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 647                 width, height, colors);
 648
 649         if (bmp_bpix == 8)
 650                 lcd_set_cmap(bmp, colors);
 651
 652         padded_width = ALIGN(width, 4);
 653
 654 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 655         splash_align_axis(&x, pwidth, width);
 656         splash_align_axis(&y, panel_info.vl_row, height);
 657 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 658         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 659
 660         if ((x + width) > pwidth)
 661                 width = pwidth - x;
 662         if ((y + height) > panel_info.vl_row) {
 663                 height = panel_info.vl_row - y;
 664                 bmap += (panel_info.vl_row - y) * padded_width;
 665         }
 666
 667         fb   = (uchar *)(lcd_base +
 668                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 669
 670         switch (bmp_bpix) {
 671         case 1:
 672         case 8: {
 673                 cmap_base = configuration_get_cmap();
 674 #ifdef CONFIG_LCD_BMP_RLE8
 675                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 676                 if (compression == BMP_BI_RLE8) {
 677                         if (bpix != 16) {
 678                                 /* TODO implement render code for bpix != 16 */
 679                                 printf("Error: only support 16 bpix");
 680                                 return 1;
 681                         }
 682                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 683                         break;
 684                 }
 685 #endif
 686
 687                 for (i = 0; i < height; ++i) {
 688                         WATCHDOG_RESET();
 689                         for (j = 0; j < width; j++) {
 690                                 if (bpix == 32) {
 691                                         int i = *bmap++;
 692
 693                                         fb[3] = 0; /* T */
 694                                         fb[0] = cte[i].blue;
 695                                         fb[1] = cte[i].green;
 696                                         fb[2] = cte[i].red;
 697                                         fb += sizeof(uint32_t) / sizeof(*fb);
 698                                 } else if (bpix == 16) {
 699                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 700                                         fb += sizeof(uint16_t) / sizeof(*fb);
 701                                 } else {
 702                                         FB_PUT_BYTE(fb, bmap);
 703                                 }
 704                         }
 705                         if (bpix > 8) {
 706                                 bmap += padded_width - width;
 707                                 fb   -= width * bpix / 8 + lcd_line_length;
 708                         } else {
 709                                 bmap += padded_width;
 710                                 fb -= lcd_line_length;
 711                         }
 712                 }
 713                 break;
 714         }
 715 #if defined(CONFIG_BMP_16BPP)
 716         case 16:
 717                 for (i = 0; i < height; ++i) {
 718                         WATCHDOG_RESET();
 719                         for (j = 0; j < width; j++)
 720                                 fb_put_word(&fb, &bmap);
 721
 722                         bmap += (padded_width - width) * 2;
 723                         fb -= width * 2 + lcd_line_length;
 724                 }
 725                 break;
 726 #endif /* CONFIG_BMP_16BPP */
 727 #if defined(CONFIG_BMP_24BMP)
 728         case 24:
 729                 for (i = 0; i < height; ++i) {
 730                         for (j = 0; j < width; j++) {
 731                                 *(fb++) = *(bmap++);
 732                                 *(fb++) = *(bmap++);
 733                                 *(fb++) = *(bmap++);
 734                                 *(fb++) = 0;
 735                         }
 736                         fb -= lcd_line_length + width * (bpix / 8);
 737                 }
 738                 break;
 739 #endif /* CONFIG_BMP_24BPP */
 740 #if defined(CONFIG_BMP_32BPP)
 741         case 32:
 742                 for (i = 0; i < height; ++i) {
 743                         WATCHDOG_RESET();
 744                         for (j = 0; j < width; j++) {
 745                                 fb[3] = *bmap++; /* T */
 746                                 fb[0] = *bmap++; /* B */
 747                                 fb[1] = *bmap++; /* G */
 748                                 fb[2] = *bmap++; /* R */
 749                                 fb += 4;
 750                         }
 751                         bmap += (padded_width - width) * 4;
 752                         fb -= lcd_line_length + width * (bpix / 8);
 753                 }
 754                 break;
 755 #endif /* CONFIG_BMP_32BPP */
 756         };
 757
 758         return 0;
 759 }
 760 #endif
 761
 762 static void lcd_logo(void)
 763 {
 764         lcd_logo_plot(0, 0);
 765
 766 #ifdef CONFIG_LCD_INFO
 767         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 768         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 769         lcd_show_board_info();
 770 #endif /* CONFIG_LCD_INFO */
 771 }
 772
 773 #ifdef CONFIG_SPLASHIMAGE_GUARD
 774 static int on_splashimage(const char *name, const char *value, enum env_op op,
 775         int flags)
 776 {
 777         ulong addr;
 778         int aligned;
 779
 780         if (op == env_op_delete)
 781                 return 0;
 782
 783         addr = simple_strtoul(value, NULL, 16);
 784         /* See README.displaying-bmps */
 785         aligned = (addr % 4 == 2);
 786         if (!aligned) {
 787                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 788                 return -1;
 789         }
 790
 791         return 0;
 792 }
 793
 794 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 795 #endif
 796
 797 int lcd_get_pixel_width(void)
 798 {
 799         return panel_info.vl_col;
 800 }
 801
 802 int lcd_get_pixel_height(void)
 803 {
 804         return panel_info.vl_row;
 805 }