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 <fdt_support.h>
  24 #include <video_font.h>
  25
  26 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  27 #include <libfdt.h>
  28 #endif
  29
  30 #ifdef CONFIG_LCD_LOGO
  31 #include <bmp_logo.h>
  32 #include <bmp_logo_data.h>
  33 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  34 #error Default Color Map overlaps with Logo Color Map
  35 #endif
  36 #endif
  37
  38 #ifdef CONFIG_SANDBOX
  39 #include <asm/sdl.h>
  40 #endif
  41
  42 #ifndef CONFIG_LCD_ALIGNMENT
  43 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  44 #endif
  45
  46 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  47         (LCD_BPP != LCD_COLOR32)
  48 #error Unsupported LCD BPP.
  49 #endif
  50
  51 DECLARE_GLOBAL_DATA_PTR;
  52
  53 static int lcd_init(void *lcdbase);
  54 static void *lcd_logo(void);
  55 static void lcd_setfgcolor(int color);
  56 static void lcd_setbgcolor(int color);
  57
  58 static int lcd_color_fg;
  59 static int lcd_color_bg;
  60 int lcd_line_length;
  61 char lcd_is_enabled = 0;
  62 static void *lcd_base;                  /* Start of framebuffer memory  */
  63 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
  64
  65 /* Flush LCD activity to the caches */
  66 void lcd_sync(void)
  67 {
  68         /*
  69          * flush_dcache_range() is declared in common.h but it seems that some
  70          * architectures do not actually implement it. Is there a way to find
  71          * out whether it exists? For now, ARM is safe.
  72          */
  73 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  74         int line_length;
  75
  76         if (lcd_flush_dcache)
  77                 flush_dcache_range((u32)lcd_base,
  78                         (u32)(lcd_base + lcd_get_size(&line_length)));
  79 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
  80         static ulong last_sync;
  81
  82         if (get_timer(last_sync) > 10) {
  83                 sandbox_sdl_sync(lcd_base);
  84                 last_sync = get_timer(0);
  85         }
  86 #endif
  87 }
  88
  89 void lcd_set_flush_dcache(int flush)
  90 {
  91         lcd_flush_dcache = (flush != 0);
  92 }
  93
  94 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
  95 {
  96         lcd_putc(c);
  97 }
  98
  99 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 100 {
 101         lcd_puts(s);
 102 }
 103
 104 /* Small utility to check that you got the colours right */
 105 #ifdef LCD_TEST_PATTERN
 106
 107 #define N_BLK_VERT      2
 108 #define N_BLK_HOR       3
 109
 110 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 111         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 112         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 113 };
 114
 115 #if LCD_BPP == LCD_COLOR8
 116 typedef uchar pix_t;
 117 #elif LCD_BPP == LCD_COLOR16
 118 typedef ushort pix_t;
 119 #elif LCD_BPP == LCD_COLOR32
 120 typedef ulong pix_t;
 121 #else
 122 #error Unsupported pixelformat
 123 #endif
 124
 125 static void test_pattern(void)
 126 {
 127         ushort v_max  = panel_info.vl_row;
 128         ushort h_max  = panel_info.vl_col;
 129         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 130         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 131         ushort v, h;
 132         pix_t *pix = lcd_base;
 133
 134         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 135                 h_max, v_max, h_step, v_step);
 136
 137         /* WARNING: Code silently assumes 8bit/pixel */
 138         for (v = 0; v < v_max; ++v) {
 139                 uchar iy = v / v_step;
 140                 for (h = 0; h < h_max; ++h) {
 141                         uchar ix = N_BLK_HOR * iy + h / h_step;
 142                         *pix++ = test_colors[ix];
 143                 }
 144         }
 145 }
 146 #endif /* LCD_TEST_PATTERN */
 147
 148 /*
 149  * With most lcd drivers the line length is set up
 150  * by calculating it from panel_info parameters. Some
 151  * drivers need to calculate the line length differently,
 152  * so make the function weak to allow overriding it.
 153  */
 154 __weak int lcd_get_size(int *line_length)
 155 {
 156         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 157         return *line_length * panel_info.vl_row;
 158 }
 159
 160 int drv_lcd_init(void)
 161 {
 162         struct stdio_dev lcddev;
 163         int rc;
 164
 165         lcd_base = map_sysmem(gd->fb_base, 0);
 166
 167         lcd_init(lcd_base);
 168
 169         /* Device initialization */
 170         memset(&lcddev, 0, sizeof(lcddev));
 171
 172         strcpy(lcddev.name, "lcd");
 173         lcddev.ext   = 0;                       /* No extensions */
 174         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 175         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 176         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 177
 178         rc = stdio_register(&lcddev);
 179
 180         return (rc == 0) ? 1 : rc;
 181 }
 182
 183 void lcd_clear(void)
 184 {
 185         short console_rows, console_cols;
 186         int bg_color;
 187 #if LCD_BPP == LCD_COLOR8
 188         /* Setting the palette */
 189         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 190         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 191         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 192         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 193         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 194         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 195         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 196         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 197         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 198 #endif
 199
 200 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 201         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 202         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 203         bg_color = CONSOLE_COLOR_WHITE;
 204 #else
 205         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 206         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 207         bg_color = CONSOLE_COLOR_BLACK;
 208 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 209
 210 #ifdef  LCD_TEST_PATTERN
 211         test_pattern();
 212 #else
 213         /* set framebuffer to background color */
 214 #if (LCD_BPP != LCD_COLOR32)
 215         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 216 #else
 217         u32 *ppix = lcd_base;
 218         u32 i;
 219         for (i = 0;
 220            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 221            i++) {
 222                 *ppix++ = bg_color;
 223         }
 224 #endif
 225 #endif
 226         /* Paint the logo and retrieve LCD base address */
 227         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 228 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 229         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 230         console_rows /= VIDEO_FONT_HEIGHT;
 231 #else
 232         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 233 #endif
 234         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 235         lcd_init_console(lcd_base, console_rows, console_cols);
 236         lcd_init_console(lcd_logo(), console_rows, console_cols);
 237         lcd_sync();
 238 }
 239
 240 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 241                         char *const argv[])
 242 {
 243         lcd_clear();
 244         return 0;
 245 }
 246 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");
 247
 248 static int lcd_init(void *lcdbase)
 249 {
 250         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 251                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 252                 lcdbase);
 253
 254         lcd_ctrl_init(lcdbase);
 255
 256         /*
 257          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 258          * the 'lcdbase' argument and uses custom lcd base address
 259          * by setting up gd->fb_base. Check for this condition and fixup
 260          * 'lcd_base' address.
 261          */
 262         if (map_to_sysmem(lcdbase) != gd->fb_base)
 263                 lcd_base = map_sysmem(gd->fb_base, 0);
 264
 265         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 266
 267         lcd_get_size(&lcd_line_length);
 268         lcd_is_enabled = 1;
 269         lcd_clear();
 270         lcd_enable();
 271
 272         /* Initialize the console */
 273         lcd_set_col(0);
 274 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 275         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 276 #else
 277         lcd_set_row(1); /* leave 1 blank line below logo */
 278 #endif
 279
 280         return 0;
 281 }
 282
 283 /*
 284  * This is called early in the system initialization to grab memory
 285  * for the LCD controller.
 286  * Returns new address for monitor, after reserving LCD buffer memory
 287  *
 288  * Note that this is running from ROM, so no write access to global data.
 289  */
 290 ulong lcd_setmem(ulong addr)
 291 {
 292         ulong size;
 293         int line_length;
 294
 295         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 296                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 297
 298         size = lcd_get_size(&line_length);
 299
 300         /* Round up to nearest full page, or MMU section if defined */
 301         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 302         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 303
 304         /* Allocate pages for the frame buffer. */
 305         addr -= size;
 306
 307         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 308               size >> 10, addr);
 309
 310         return addr;
 311 }
 312
 313 static void lcd_setfgcolor(int color)
 314 {
 315         lcd_color_fg = color;
 316 }
 317
 318 int lcd_getfgcolor(void)
 319 {
 320         return lcd_color_fg;
 321 }
 322
 323 static void lcd_setbgcolor(int color)
 324 {
 325         lcd_color_bg = color;
 326 }
 327
 328 int lcd_getbgcolor(void)
 329 {
 330         return lcd_color_bg;
 331 }
 332
 333 #ifdef CONFIG_LCD_LOGO
 334 __weak void lcd_logo_set_cmap(void)
 335 {
 336         int i;
 337         ushort *cmap = configuration_get_cmap();
 338
 339         for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
 340                 *cmap++ = bmp_logo_palette[i];
 341 }
 342
 343 void bitmap_plot(int x, int y)
 344 {
 345         ushort i, j;
 346         uchar *bmap = &bmp_logo_bitmap[0];
 347         unsigned bpix = NBITS(panel_info.vl_bpix);
 348         uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 349         ushort *fb16;
 350
 351         debug("Logo: width %d  height %d  colors %d\n",
 352               BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
 353
 354         if (bpix < 12) {
 355                 WATCHDOG_RESET();
 356                 lcd_logo_set_cmap();
 357                 WATCHDOG_RESET();
 358
 359                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 360                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 361                         bmap += BMP_LOGO_WIDTH;
 362                         fb += panel_info.vl_col;
 363                 }
 364         } else if (NBITS(panel_info.vl_bpix) == 16) {
 365                 u16 col16;
 366                 fb16 = (ushort *)fb;
 367                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 368                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 369                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 370                                 fb16[j] =
 371                                         ((col16 & 0x000F) << 1) |
 372                                         ((col16 & 0x00F0) << 3) |
 373                                         ((col16 & 0x0F00) << 4);
 374                                 }
 375                         bmap += BMP_LOGO_WIDTH;
 376                         fb16 += panel_info.vl_col;
 377                 }
 378         } else { /* true color mode */
 379                 u16 col16;
 380                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 381
 382                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 383                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 384                                 col16 = bmp_logo_palette[bmap[j] - 16];
 385                                 fb32[j] =
 386                                         ((col16 & 0x000F) << 4) |
 387                                         ((col16 & 0x00F0) << 8) |
 388                                         ((col16 & 0x0F00) << 12);
 389                                 }
 390                         bmap += BMP_LOGO_WIDTH;
 391                         fb32 += panel_info.vl_col;
 392                 }
 393         }
 394
 395         WATCHDOG_RESET();
 396         lcd_sync();
 397 }
 398 #else
 399 static inline void bitmap_plot(int x, int y) {}
 400 #endif /* CONFIG_LCD_LOGO */
 401
 402 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 403 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 404 #define BMP_ALIGN_CENTER        0x7FFF
 405
 406 static void splash_align_axis(int *axis, unsigned long panel_size,
 407                                         unsigned long picture_size)
 408 {
 409         unsigned long panel_picture_delta = panel_size - picture_size;
 410         unsigned long axis_alignment;
 411
 412         if (*axis == BMP_ALIGN_CENTER)
 413                 axis_alignment = panel_picture_delta / 2;
 414         else if (*axis < 0)
 415                 axis_alignment = panel_picture_delta + *axis + 1;
 416         else
 417                 return;
 418
 419         *axis = max(0, (int)axis_alignment);
 420 }
 421 #endif
 422
 423 #ifdef CONFIG_LCD_BMP_RLE8
 424 #define BMP_RLE8_ESCAPE         0
 425 #define BMP_RLE8_EOL            0
 426 #define BMP_RLE8_EOBMP          1
 427 #define BMP_RLE8_DELTA          2
 428
 429 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 430                                   int cnt)
 431 {
 432         while (cnt > 0) {
 433                 *(*fbp)++ = cmap[*bmap++];
 434                 cnt--;
 435         }
 436 }
 437
 438 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 439 {
 440         ushort *fb = *fbp;
 441         int cnt_8copy = cnt >> 3;
 442
 443         cnt -= cnt_8copy << 3;
 444         while (cnt_8copy > 0) {
 445                 *fb++ = c;
 446                 *fb++ = c;
 447                 *fb++ = c;
 448                 *fb++ = c;
 449                 *fb++ = c;
 450                 *fb++ = c;
 451                 *fb++ = c;
 452                 *fb++ = c;
 453                 cnt_8copy--;
 454         }
 455         while (cnt > 0) {
 456                 *fb++ = c;
 457                 cnt--;
 458         }
 459         *fbp = fb;
 460 }
 461
 462 /*
 463  * Do not call this function directly, must be called from lcd_display_bitmap.
 464  */
 465 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 466                                     int x_off, int y_off)
 467 {
 468         uchar *bmap;
 469         ulong width, height;
 470         ulong cnt, runlen;
 471         int x, y;
 472         int decode = 1;
 473
 474         width = get_unaligned_le32(&bmp->header.width);
 475         height = get_unaligned_le32(&bmp->header.height);
 476         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 477
 478         x = 0;
 479         y = height - 1;
 480
 481         while (decode) {
 482                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 483                         switch (bmap[1]) {
 484                         case BMP_RLE8_EOL:
 485                                 /* end of line */
 486                                 bmap += 2;
 487                                 x = 0;
 488                                 y--;
 489                                 /* 16bpix, 2-byte per pixel, width should *2 */
 490                                 fb -= (width * 2 + lcd_line_length);
 491                                 break;
 492                         case BMP_RLE8_EOBMP:
 493                                 /* end of bitmap */
 494                                 decode = 0;
 495                                 break;
 496                         case BMP_RLE8_DELTA:
 497                                 /* delta run */
 498                                 x += bmap[2];
 499                                 y -= bmap[3];
 500                                 /* 16bpix, 2-byte per pixel, x should *2 */
 501                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 502                                         * lcd_line_length + (x + x_off) * 2);
 503                                 bmap += 4;
 504                                 break;
 505                         default:
 506                                 /* unencoded run */
 507                                 runlen = bmap[1];
 508                                 bmap += 2;
 509                                 if (y < height) {
 510                                         if (x < width) {
 511                                                 if (x + runlen > width)
 512                                                         cnt = width - x;
 513                                                 else
 514                                                         cnt = runlen;
 515                                                 draw_unencoded_bitmap(
 516                                                         (ushort **)&fb,
 517                                                         bmap, cmap, cnt);
 518                                         }
 519                                         x += runlen;
 520                                 }
 521                                 bmap += runlen;
 522                                 if (runlen & 1)
 523                                         bmap++;
 524                         }
 525                 } else {
 526                         /* encoded run */
 527                         if (y < height) {
 528                                 runlen = bmap[0];
 529                                 if (x < width) {
 530                                         /* aggregate the same code */
 531                                         while (bmap[0] == 0xff &&
 532                                                bmap[2] != BMP_RLE8_ESCAPE &&
 533                                                bmap[1] == bmap[3]) {
 534                                                 runlen += bmap[2];
 535                                                 bmap += 2;
 536                                         }
 537                                         if (x + runlen > width)
 538                                                 cnt = width - x;
 539                                         else
 540                                                 cnt = runlen;
 541                                         draw_encoded_bitmap((ushort **)&fb,
 542                                                 cmap[bmap[1]], cnt);
 543                                 }
 544                                 x += runlen;
 545                         }
 546                         bmap += 2;
 547                 }
 548         }
 549 }
 550 #endif
 551
 552 __weak void fb_put_byte(uchar **fb, uchar **from)
 553 {
 554         *(*fb)++ = *(*from)++;
 555 }
 556
 557 #if defined(CONFIG_BMP_16BPP)
 558 __weak void fb_put_word(uchar **fb, uchar **from)
 559 {
 560         *(*fb)++ = *(*from)++;
 561         *(*fb)++ = *(*from)++;
 562 }
 563 #endif /* CONFIG_BMP_16BPP */
 564
 565 __weak void lcd_set_cmap(bmp_image_t *bmp, unsigned colors)
 566 {
 567         int i;
 568         bmp_color_table_entry_t cte;
 569         ushort *cmap = configuration_get_cmap();
 570
 571         for (i = 0; i < colors; ++i) {
 572                 cte = bmp->color_table[i];
 573                 *cmap = (((cte.red)   << 8) & 0xf800) |
 574                         (((cte.green) << 3) & 0x07e0) |
 575                         (((cte.blue)  >> 3) & 0x001f);
 576 #if defined(CONFIG_MPC823)
 577                 cmap--;
 578 #else
 579                 cmap++;
 580 #endif
 581         }
 582 }
 583
 584 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 585 {
 586         ushort *cmap_base = NULL;
 587         ushort i, j;
 588         uchar *fb;
 589         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 590         uchar *bmap;
 591         ushort padded_width;
 592         unsigned long width, height;
 593         unsigned long pwidth = panel_info.vl_col;
 594         unsigned long long colors;
 595         unsigned bpix, bmp_bpix;
 596         bmp_color_table_entry_t *cte;
 597
 598         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 599                 bmp->header.signature[1] == 'M')) {
 600                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 601
 602                 return 1;
 603         }
 604
 605         width = get_unaligned_le32(&bmp->header.width);
 606         height = get_unaligned_le32(&bmp->header.height);
 607         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 608
 609         colors = 1 << bmp_bpix;
 610
 611         bpix = NBITS(panel_info.vl_bpix);
 612
 613         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 614                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 615                         bpix, bmp_bpix);
 616
 617                 return 1;
 618         }
 619
 620         /*
 621          * We support displaying 8bpp BMPs on 16bpp LCDs
 622          * and displaying 24bpp BMPs on 32bpp LCDs
 623          * */
 624         if (bpix != bmp_bpix &&
 625             !(bmp_bpix == 8 && bpix == 16) &&
 626             !(bmp_bpix == 24 && bpix == 32)) {
 627                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 628                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 629                 return 1;
 630         }
 631
 632         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 633                 width, height, colors);
 634
 635         if (bmp_bpix == 8)
 636                 lcd_set_cmap(bmp, colors);
 637
 638         padded_width = ALIGN(width, 4);
 639
 640 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 641         splash_align_axis(&x, pwidth, width);
 642         splash_align_axis(&y, panel_info.vl_row, height);
 643 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 644         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 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                 bmap += (panel_info.vl_row - y) * padded_width;
 651         }
 652
 653         fb   = (uchar *)(lcd_base +
 654                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 655
 656         switch (bmp_bpix) {
 657         case 1:
 658         case 8: {
 659                 cmap_base = configuration_get_cmap();
 660 #ifdef CONFIG_LCD_BMP_RLE8
 661                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 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                 for (i = 0; i < height; ++i) {
 674                         WATCHDOG_RESET();
 675                         for (j = 0; j < width; j++) {
 676                                 if (bpix == 32) {
 677                                         int i = *bmap++;
 678
 679                                         fb[3] = 0; /* T */
 680                                         fb[0] = cte[i].blue;
 681                                         fb[1] = cte[i].green;
 682                                         fb[2] = cte[i].red;
 683                                         fb += sizeof(uint32_t) / sizeof(*fb);
 684                                 } else if (bpix == 16) {
 685                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 686                                         fb += sizeof(uint16_t) / sizeof(*fb);
 687                                 } else {
 688                                         FB_PUT_BYTE(fb, bmap);
 689                                 }
 690                         }
 691                         if (bpix > 8) {
 692                                 bmap += padded_width - width;
 693                                 fb   -= width * bpix / 8 + lcd_line_length;
 694                         } else {
 695                                 bmap += padded_width;
 696                                 fb -= lcd_line_length;
 697                         }
 698                 }
 699                 break;
 700         }
 701 #if defined(CONFIG_BMP_16BPP)
 702         case 16:
 703                 for (i = 0; i < height; ++i) {
 704                         WATCHDOG_RESET();
 705                         for (j = 0; j < width; j++)
 706                                 fb_put_word(&fb, &bmap);
 707
 708                         bmap += (padded_width - width) * 2;
 709                         fb -= width * 2 + lcd_line_length;
 710                 }
 711                 break;
 712 #endif /* CONFIG_BMP_16BPP */
 713 #if defined(CONFIG_BMP_24BMP)
 714         case 24:
 715                 for (i = 0; i < height; ++i) {
 716                         for (j = 0; j < width; j++) {
 717                                 *(fb++) = *(bmap++);
 718                                 *(fb++) = *(bmap++);
 719                                 *(fb++) = *(bmap++);
 720                                 *(fb++) = 0;
 721                         }
 722                         fb -= lcd_line_length + width * (bpix / 8);
 723                 }
 724                 break;
 725 #endif /* CONFIG_BMP_24BPP */
 726 #if defined(CONFIG_BMP_32BPP)
 727         case 32:
 728                 for (i = 0; i < height; ++i) {
 729                         WATCHDOG_RESET();
 730                         for (j = 0; j < width; j++) {
 731                                 fb[3] = *bmap++; /* T */
 732                                 fb[0] = *bmap++; /* B */
 733                                 fb[1] = *bmap++; /* G */
 734                                 fb[2] = *bmap++; /* R */
 735                                 fb += 4;
 736                         }
 737                         bmap += (padded_width - width) * 4;
 738                         fb -= lcd_line_length + width * (bpix / 8);
 739                 }
 740                 break;
 741 #endif /* CONFIG_BMP_32BPP */
 742         };
 743
 744         return 0;
 745 }
 746 #endif
 747
 748 static void *lcd_logo(void)
 749 {
 750 #ifdef CONFIG_SPLASH_SCREEN
 751         char *s;
 752         ulong addr;
 753         static int do_splash = 1;
 754
 755         if (do_splash && (s = getenv("splashimage")) != NULL) {
 756                 int x = 0, y = 0;
 757                 char *end;
 758
 759                 do_splash = 0;
 760
 761                 if (splash_screen_prepare())
 762                         return (void *)lcd_base;
 763
 764                 addr = simple_strtoul (s, &end, 16);
 765                 if (addr == 0 || *end != '\0')
 766                         return lcd_base;
 767
 768                 splash_get_pos(&x, &y);
 769
 770                 if (bmp_display(addr, x, y) == 0)
 771                         return (void *)lcd_base;
 772         }
 773 #endif /* CONFIG_SPLASH_SCREEN */
 774
 775         bitmap_plot(0, 0);
 776
 777 #ifdef CONFIG_LCD_INFO
 778         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
 779         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
 780         lcd_show_board_info();
 781 #endif /* CONFIG_LCD_INFO */
 782
 783 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 784         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
 785 #else
 786         return lcd_base;
 787 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 788 }
 789
 790 #ifdef CONFIG_SPLASHIMAGE_GUARD
 791 static int on_splashimage(const char *name, const char *value, enum env_op op,
 792         int flags)
 793 {
 794         ulong addr;
 795         int aligned;
 796
 797         if (op == env_op_delete)
 798                 return 0;
 799
 800         addr = simple_strtoul(value, NULL, 16);
 801         /* See README.displaying-bmps */
 802         aligned = (addr % 4 == 2);
 803         if (!aligned) {
 804                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
 805                 return -1;
 806         }
 807
 808         return 0;
 809 }
 810
 811 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
 812 #endif
 813
 814 int lcd_get_pixel_width(void)
 815 {
 816         return panel_info.vl_col;
 817 }
 818
 819 int lcd_get_pixel_height(void)
 820 {
 821         return panel_info.vl_row;
 822 }
 823
 824 #if defined(CONFIG_LCD_DT_SIMPLEFB)
 825 static int lcd_dt_simplefb_configure_node(void *blob, int off)
 826 {
 827 #if LCD_BPP == LCD_COLOR16
 828         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
 829                                        panel_info.vl_col, panel_info.vl_row,
 830                                        panel_info.vl_col * 2, "r5g6b5");
 831 #else
 832         return -1;
 833 #endif
 834 }
 835
 836 int lcd_dt_simplefb_add_node(void *blob)
 837 {
 838         static const char compat[] = "simple-framebuffer";
 839         static const char disabled[] = "disabled";
 840         int off, ret;
 841
 842         off = fdt_add_subnode(blob, 0, "framebuffer");
 843         if (off < 0)
 844                 return -1;
 845
 846         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
 847         if (ret < 0)
 848                 return -1;
 849
 850         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
 851         if (ret < 0)
 852                 return -1;
 853
 854         return lcd_dt_simplefb_configure_node(blob, off);
 855 }
 856
 857 int lcd_dt_simplefb_enable_existing_node(void *blob)
 858 {
 859         int off;
 860
 861         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
 862         if (off < 0)
 863                 return -1;
 864
 865         return lcd_dt_simplefb_configure_node(blob, off);
 866 }
 867 #endif