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 #if LCD_BPP == LCD_COLOR8
 112 typedef uchar pix_t;
 113 #elif LCD_BPP == LCD_COLOR16
 114 typedef ushort pix_t;
 115 #elif LCD_BPP == LCD_COLOR32
 116 typedef ulong pix_t;
 117 #else
 118 #error Unsupported pixelformat
 119 #endif
 120
 121 static void test_pattern(void)
 122 {
 123         ushort v_max  = panel_info.vl_row;
 124         ushort h_max  = panel_info.vl_col;
 125         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 126         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 127         ushort v, h;
 128         pix_t *pix = lcd_base;
 129
 130         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 131                 h_max, v_max, h_step, v_step);
 132
 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         int bg_color;
 181         char *s;
 182         ulong addr;
 183         static int do_splash = 1;
 184 #if LCD_BPP == LCD_COLOR8
 185         /* Setting the palette */
 186         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 187         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 188         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 189         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 190         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 191         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 192         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 193         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 194         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 195 #endif
 196
 197 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 198         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 199         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 200         bg_color = CONSOLE_COLOR_WHITE;
 201 #else
 202         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 203         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 204         bg_color = CONSOLE_COLOR_BLACK;
 205 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 206
 207 #ifdef  LCD_TEST_PATTERN
 208         test_pattern();
 209 #else
 210         /* set framebuffer to background color */
 211 #if (LCD_BPP != LCD_COLOR32)
 212         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 213 #else
 214         u32 *ppix = lcd_base;
 215         u32 i;
 216         for (i = 0;
 217            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 218            i++) {
 219                 *ppix++ = bg_color;
 220         }
 221 #endif
 222 #endif
 223         /* setup text-console */
 224         debug("[LCD] setting up console...\n");
 225         lcd_init_console(lcd_base,
 226                          panel_info.vl_col,
 227                          panel_info.vl_row,
 228                          panel_info.vl_rot);
 229         /* Paint the logo and retrieve LCD base address */
 230         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 231         if (do_splash) {
 232                 s = getenv("splashimage");
 233                 if (s) {
 234                         do_splash = 0;
 235                         addr = simple_strtoul(s, NULL, 16);
 236                         if (lcd_splash(addr) == 0) {
 237                                 lcd_sync();
 238                                 return;
 239                         }
 240                 }
 241         }
 242
 243         lcd_logo();
 244 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 245         addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 246         lcd_init_console((void *)addr, panel_info.vl_row,
 247                          panel_info.vl_col, panel_info.vl_rot);
 248 #endif
 249         lcd_sync();
 250 }
 251
 252 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 253                         char *const argv[])
 254 {
 255         lcd_clear();
 256         return 0;
 257 }
 258 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 259
 260 static int lcd_init(void *lcdbase)
 261 {
 262         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 263                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 264                 lcdbase);
 265
 266         lcd_ctrl_init(lcdbase);
 267
 268         /*
 269          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 270          * the 'lcdbase' argument and uses custom lcd base address
 271          * by setting up gd->fb_base. Check for this condition and fixup
 272          * 'lcd_base' address.
 273          */
 274         if (map_to_sysmem(lcdbase) != gd->fb_base)
 275                 lcd_base = map_sysmem(gd->fb_base, 0);
 276
 277         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 278
 279         lcd_get_size(&lcd_line_length);
 280         lcd_is_enabled = 1;
 281         lcd_clear();
 282         lcd_enable();
 283
 284         /* Initialize the console */
 285         lcd_set_col(0);
 286 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 287         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 288 #else
 289         lcd_set_row(1); /* leave 1 blank line below logo */
 290 #endif
 291
 292         return 0;
 293 }
 294
 295 /*
 296  * This is called early in the system initialization to grab memory
 297  * for the LCD controller.
 298  * Returns new address for monitor, after reserving LCD buffer memory
 299  *
 300  * Note that this is running from ROM, so no write access to global data.
 301  */
 302 ulong lcd_setmem(ulong addr)
 303 {
 304         ulong size;
 305         int line_length;
 306
 307         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 308                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 309
 310         size = lcd_get_size(&line_length);
 311
 312         /* Round up to nearest full page, or MMU section if defined */
 313         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 314         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 315
 316         /* Allocate pages for the frame buffer. */
 317         addr -= size;
 318
 319         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 320               size >> 10, addr);
 321
 322         return addr;
 323 }
 324
 325 static void lcd_setfgcolor(int color)
 326 {
 327         lcd_color_fg = color;
 328 }
 329
 330 int lcd_getfgcolor(void)
 331 {
 332         return lcd_color_fg;
 333 }
 334
 335 static void lcd_setbgcolor(int color)
 336 {
 337         lcd_color_bg = color;
 338 }
 339
 340 int lcd_getbgcolor(void)
 341 {
 342         return lcd_color_bg;
 343 }
 344
 345 #ifdef CONFIG_LCD_LOGO
 346 __weak void lcd_logo_set_cmap(void)
 347 {
 348         int i;
 349         ushort *cmap = configuration_get_cmap();
 350
 351         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 352                 *cmap++ = bmp_logo_palette[i];
 353 }
 354
 355 void lcd_logo_plot(int x, int y)
 356 {
 357         ushort i, j;
 358         uchar *bmap = &bmp_logo_bitmap[0];
 359         unsigned bpix = NBITS(panel_info.vl_bpix);
 360         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 361         ushort *fb16;
 362
 363         debug("Logo: width %d  height %d  colors %d\n",
 364               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 365
 366         if (bpix < 12) {
 367                 WATCHDOG_RESET();
 368                 lcd_logo_set_cmap();
 369                 WATCHDOG_RESET();
 370
 371                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 372                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 373                         bmap += BMP_LOGO_WIDTH;
 374                         fb += panel_info.vl_col;
 375                 }
 376         } else if (NBITS(panel_info.vl_bpix) == 16) {
 377                 u16 col16;
 378                 fb16 = (ushort *)fb;
 379                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 380                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 381                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 382                                 fb16[j] =
 383                                         ((col16 & 0x000F) << 1) |
 384                                         ((col16 & 0x00F0) << 3) |
 385                                         ((col16 & 0x0F00) << 4);
 386                                 }
 387                         bmap += BMP_LOGO_WIDTH;
 388                         fb16 += panel_info.vl_col;
 389                 }
 390         } else { /* true color mode */
 391                 u16 col16;
 392                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 393
 394                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 395                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 396                                 col16 = bmp_logo_palette[bmap[j] - 16];
 397                                 fb32[j] =
 398                                         ((col16 & 0x000F) << 4) |
 399                                         ((col16 & 0x00F0) << 8) |
 400                                         ((col16 & 0x0F00) << 12);
 401                                 }
 402                         bmap += BMP_LOGO_WIDTH;
 403                         fb32 += panel_info.vl_col;
 404                 }
 405         }
 406
 407         WATCHDOG_RESET();
 408         lcd_sync();
 409 }
 410 #else
 411 static inline void lcd_logo_plot(int x, int y) {}
 412 #endif /* CONFIG_LCD_LOGO */
 413
 414 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 415 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 416 #define BMP_ALIGN_CENTER        0x7FFF
 417
 418 static void splash_align_axis(int *axis, unsigned long panel_size,
 419                                         unsigned long picture_size)
 420 {
 421         unsigned long panel_picture_delta = panel_size - picture_size;
 422         unsigned long axis_alignment;
 423
 424         if (*axis == BMP_ALIGN_CENTER)
 425                 axis_alignment = panel_picture_delta / 2;
 426         else if (*axis < 0)
 427                 axis_alignment = panel_picture_delta + *axis + 1;
 428         else
 429                 return;
 430
 431         *axis = max(0, (int)axis_alignment);
 432 }
 433 #endif
 434
 435 #ifdef CONFIG_LCD_BMP_RLE8
 436 #define BMP_RLE8_ESCAPE         0
 437 #define BMP_RLE8_EOL            0
 438 #define BMP_RLE8_EOBMP          1
 439 #define BMP_RLE8_DELTA          2
 440
 441 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 442                                   int cnt)
 443 {
 444         while (cnt > 0) {
 445                 *(*fbp)++ = cmap[*bmap++];
 446                 cnt--;
 447         }
 448 }
 449
 450 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 451 {
 452         ushort *fb = *fbp;
 453         int cnt_8copy = cnt >> 3;
 454
 455         cnt -= cnt_8copy << 3;
 456         while (cnt_8copy > 0) {
 457                 *fb++ = c;
 458                 *fb++ = c;
 459                 *fb++ = c;
 460                 *fb++ = c;
 461                 *fb++ = c;
 462                 *fb++ = c;
 463                 *fb++ = c;
 464                 *fb++ = c;
 465                 cnt_8copy--;
 466         }
 467         while (cnt > 0) {
 468                 *fb++ = c;
 469                 cnt--;
 470         }
 471         *fbp = fb;
 472 }
 473
 474 /*
 475  * Do not call this function directly, must be called from lcd_display_bitmap.
 476  */
 477 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
 478                                     uchar *fb, int x_off, int y_off)
 479 {
 480         uchar *bmap;
 481         ulong width, height;
 482         ulong cnt, runlen;
 483         int x, y;
 484         int decode = 1;
 485
 486         width = get_unaligned_le32(&bmp->header.width);
 487         height = get_unaligned_le32(&bmp->header.height);
 488         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 489
 490         x = 0;
 491         y = height - 1;
 492
 493         while (decode) {
 494                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 495                         switch (bmap[1]) {
 496                         case BMP_RLE8_EOL:
 497                                 /* end of line */
 498                                 bmap += 2;
 499                                 x = 0;
 500                                 y--;
 501                                 /* 16bpix, 2-byte per pixel, width should *2 */
 502                                 fb -= (width * 2 + lcd_line_length);
 503                                 break;
 504                         case BMP_RLE8_EOBMP:
 505                                 /* end of bitmap */
 506                                 decode = 0;
 507                                 break;
 508                         case BMP_RLE8_DELTA:
 509                                 /* delta run */
 510                                 x += bmap[2];
 511                                 y -= bmap[3];
 512                                 /* 16bpix, 2-byte per pixel, x should *2 */
 513                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 514                                         * lcd_line_length + (x + x_off) * 2);
 515                                 bmap += 4;
 516                                 break;
 517                         default:
 518                                 /* unencoded run */
 519                                 runlen = bmap[1];
 520                                 bmap += 2;
 521                                 if (y < height) {
 522                                         if (x < width) {
 523                                                 if (x + runlen > width)
 524                                                         cnt = width - x;
 525                                                 else
 526                                                         cnt = runlen;
 527                                                 draw_unencoded_bitmap(
 528                                                         (ushort **)&fb,
 529                                                         bmap, cmap, cnt);
 530                                         }
 531                                         x += runlen;
 532                                 }
 533                                 bmap += runlen;
 534                                 if (runlen & 1)
 535                                         bmap++;
 536                         }
 537                 } else {
 538                         /* encoded run */
 539                         if (y < height) {
 540                                 runlen = bmap[0];
 541                                 if (x < width) {
 542                                         /* aggregate the same code */
 543                                         while (bmap[0] == 0xff &&
 544                                                bmap[2] != BMP_RLE8_ESCAPE &&
 545                                                bmap[1] == bmap[3]) {
 546                                                 runlen += bmap[2];
 547                                                 bmap += 2;
 548                                         }
 549                                         if (x + runlen > width)
 550                                                 cnt = width - x;
 551                                         else
 552                                                 cnt = runlen;
 553                                         draw_encoded_bitmap((ushort **)&fb,
 554                                                 cmap[bmap[1]], cnt);
 555                                 }
 556                                 x += runlen;
 557                         }
 558                         bmap += 2;
 559                 }
 560         }
 561 }
 562 #endif
 563
 564 __weak void fb_put_byte(uchar **fb, uchar **from)
 565 {
 566         *(*fb)++ = *(*from)++;
 567 }
 568
 569 #if defined(CONFIG_BMP_16BPP)
 570 __weak void fb_put_word(uchar **fb, uchar **from)
 571 {
 572         *(*fb)++ = *(*from)++;
 573         *(*fb)++ = *(*from)++;
 574 }
 575 #endif /* CONFIG_BMP_16BPP */
 576
 577 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
 578 {
 579         int i;
 580         struct bmp_color_table_entry cte;
 581         ushort *cmap = configuration_get_cmap();
 582
 583         for (i = 0; i < colors; ++i) {
 584                 cte = bmp->color_table[i];
 585                 *cmap = (((cte.red)   << 8) & 0xf800) |
 586                         (((cte.green) << 3) & 0x07e0) |
 587                         (((cte.blue)  >> 3) & 0x001f);
 588 #if defined(CONFIG_MPC823)
 589                 cmap--;
 590 #else
 591                 cmap++;
 592 #endif
 593         }
 594 }
 595
 596 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 597 {
 598         ushort *cmap_base = NULL;
 599         ushort i, j;
 600         uchar *fb;
 601         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
 602         uchar *bmap;
 603         ushort padded_width;
 604         unsigned long width, height;
 605         unsigned long pwidth = panel_info.vl_col;
 606         unsigned long long colors;
 607         unsigned bpix, bmp_bpix;
 608         int hdr_size;
 609         struct bmp_color_table_entry *palette = bmp->color_table;
 610
 611         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 612                 bmp->header.signature[1] == 'M')) {
 613                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 614
 615                 return 1;
 616         }
 617
 618         width = get_unaligned_le32(&bmp->header.width);
 619         height = get_unaligned_le32(&bmp->header.height);
 620         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 621         hdr_size = get_unaligned_le16(&bmp->header.size);
 622         debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
 623
 624         colors = 1 << bmp_bpix;
 625
 626         bpix = NBITS(panel_info.vl_bpix);
 627
 628         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 629                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 630                         bpix, bmp_bpix);
 631
 632                 return 1;
 633         }
 634
 635         /*
 636          * We support displaying 8bpp BMPs on 16bpp LCDs
 637          * and displaying 24bpp BMPs on 32bpp LCDs
 638          * */
 639         if (bpix != bmp_bpix &&
 640             !(bmp_bpix == 8 && bpix == 16) &&
 641             !(bmp_bpix == 24 && bpix == 32)) {
 642                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 643                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 644                 return 1;
 645         }
 646
 647         debug("Display-bmp: %lu x %lu  with %llu colors, display %d\n",
 648                 width, height, colors, NBITS(bmp_bpix));
 649
 650         if (bmp_bpix == 8)
 651                 lcd_set_cmap(bmp, colors);
 652
 653         padded_width = ALIGN(width, 4);
 654
 655 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 656         splash_align_axis(&x, pwidth, width);
 657         splash_align_axis(&y, panel_info.vl_row, height);
 658 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 659         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 660
 661         if ((x + width) > pwidth)
 662                 width = pwidth - x;
 663         if ((y + height) > panel_info.vl_row) {
 664                 height = panel_info.vl_row - y;
 665                 bmap += (panel_info.vl_row - y) * padded_width;
 666         }
 667
 668         fb   = (uchar *)(lcd_base +
 669                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 670
 671         switch (bmp_bpix) {
 672         case 1:
 673         case 8: {
 674                 cmap_base = configuration_get_cmap();
 675 #ifdef CONFIG_LCD_BMP_RLE8
 676                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 677                 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
 678                 if (compression == BMP_BI_RLE8) {
 679                         if (bpix != 16) {
 680                                 /* TODO implement render code for bpix != 16 */
 681                                 printf("Error: only support 16 bpix");
 682                                 return 1;
 683                         }
 684                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 685                         break;
 686                 }
 687 #endif
 688
 689                 for (i = 0; i < height; ++i) {
 690                         WATCHDOG_RESET();
 691                         for (j = 0; j < width; j++) {
 692                                 if (bpix != 16) {
 693                                         fb_put_byte(&fb, &bmap);
 694                                 } else {
 695                                         struct bmp_color_table_entry *entry;
 696                                         uint val;
 697
 698                                         if (cmap_base) {
 699                                                 val = cmap_base[*bmap];
 700                                         } else {
 701                                                 entry = &palette[*bmap];
 702                                                 val = entry->blue >> 3 |
 703                                                         entry->green >> 2 << 5 |
 704                                                         entry->red >> 3 << 11;
 705                                         }
 706                                         *(uint16_t *)fb = val;
 707                                         bmap++;
 708                                         fb += sizeof(uint16_t) / sizeof(*fb);
 709                                 } else {
 710                                         FB_PUT_BYTE(fb, bmap);
 711                                 }
 712                         }
 713                         if (bpix > 8) {
 714                                 bmap += padded_width - width;
 715                                 fb   -= width * bpix / 8 + lcd_line_length;
 716                         } else {
 717                                 bmap += padded_width;
 718                                 fb -= lcd_line_length;
 719                         }
 720                 }
 721                 break;
 722         }
 723 #if defined(CONFIG_BMP_16BPP)
 724         case 16:
 725                 for (i = 0; i < height; ++i) {
 726                         WATCHDOG_RESET();
 727                         for (j = 0; j < width; j++)
 728                                 fb_put_word(&fb, &bmap);
 729
 730                         bmap += (padded_width - width) * 2;
 731                         fb -= width * 2 + lcd_line_length;
 732                 }
 733                 break;
 734 #endif /* CONFIG_BMP_16BPP */
 735 #if defined(CONFIG_BMP_24BMP)
 736         case 24:
 737                 for (i = 0; i < height; ++i) {
 738                         for (j = 0; j < width; j++) {
 739                                 *(fb++) = *(bmap++);
 740                                 *(fb++) = *(bmap++);
 741                                 *(fb++) = *(bmap++);
 742                                 *(fb++) = 0;
 743                         }
 744                         fb -= lcd_line_length + width * (bpix / 8);
 745                 }
 746                 break;
 747 #endif /* CONFIG_BMP_24BPP */
 748 #if defined(CONFIG_BMP_32BPP)
 749         case 32:
 750                 for (i = 0; i < height; ++i) {
 751                         WATCHDOG_RESET();
 752                         for (j = 0; j < width; j++) {
 753                                 fb[3] = *bmap++; /* T */
 754                                 fb[0] = *bmap++; /* B */
 755                                 fb[1] = *bmap++; /* G */
 756                                 fb[2] = *bmap++; /* R */
 757                                 fb += 4;
 758                         }
 759                         bmap += (padded_width - width) * 4;
 760                         fb -= lcd_line_length + width * (bpix / 8);
 761                 }
 762                 break;
 763 #endif /* CONFIG_BMP_32BPP */
 764         };
 765
 766         lcd_sync();
 767         return 0;
 768 }
 769 #endif
 770
 771 static void lcd_logo(void)
 772 {
 773         lcd_logo_plot(0, 0);
 774
 775 #ifdef CONFIG_LCD_INFO
 776         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 777         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 778         lcd_show_board_info();
 779 #endif /* CONFIG_LCD_INFO */
 780 }
 781
 782 #ifdef CONFIG_SPLASHIMAGE_GUARD
 783 static int on_splashimage(const char *name, const char *value, enum env_op op,
 784         int flags)
 785 {
 786         ulong addr;
 787         int aligned;
 788
 789         if (op == env_op_delete)
 790                 return 0;
 791
 792         addr = simple_strtoul(value, NULL, 16);
 793         /* See README.displaying-bmps */
 794         aligned = (addr % 4 == 2);
 795         if (!aligned) {
 796                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 797                 return -1;
 798         }
 799
 800         return 0;
 801 }
 802
 803 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 804 #endif
 805
 806 int lcd_get_pixel_width(void)
 807 {
 808         return panel_info.vl_col;
 809 }
 810
 811 int lcd_get_pixel_height(void)
 812 {
 813         return panel_info.vl_row;
 814 }