common/lcd.c

   1 /*
   2  * Common LCD routines for supported CPUs
   3  *
   4  * (C) Copyright 2001-2002
   5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 /************************************************************************/
  11 /* ** HEADER FILES                                                      */
  12 /************************************************************************/
  13
  14 /* #define DEBUG */
  15
  16 #include <config.h>
  17 #include <common.h>
  18 #include <command.h>
  19 #include <stdarg.h>
  20 #include <search.h>
  21 #include <env_callback.h>
  22 #include <linux/types.h>
  23 #include <stdio_dev.h>
  24 #if defined(CONFIG_POST)
  25 #include <post.h>
  26 #endif
  27 #include <lcd.h>
  28 #include <watchdog.h>
  29 #include <asm/unaligned.h>
  30 #include <splash.h>
  31 #include <asm/io.h>
  32 #include <asm/unaligned.h>
  33 #include <fdt_support.h>
  34
  35 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  36         defined(CONFIG_CPU_MONAHANS)
  37 #include <asm/byteorder.h>
  38 #endif
  39
  40 #if defined(CONFIG_MPC823)
  41 #include <lcdvideo.h>
  42 #endif
  43
  44 #if defined(CONFIG_ATMEL_LCD)
  45 #include <atmel_lcdc.h>
  46 #endif
  47
  48 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  49 #include <libfdt.h>
  50 #endif
  51
  52 /************************************************************************/
  53 /* ** FONT DATA                                                         */
  54 /************************************************************************/
  55 #include <video_font.h>         /* Get font data, width and height      */
  56
  57 /************************************************************************/
  58 /* ** LOGO DATA                                                         */
  59 /************************************************************************/
  60 #ifdef CONFIG_LCD_LOGO
  61 # include <bmp_logo.h>          /* Get logo data, width and height      */
  62 # include <bmp_logo_data.h>
  63 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  64 #  error Default Color Map overlaps with Logo Color Map
  65 # endif
  66 #endif
  67
  68 #ifdef CONFIG_SANDBOX
  69 #include <asm/sdl.h>
  70 #endif
  71
  72 #ifndef CONFIG_LCD_ALIGNMENT
  73 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  74 #endif
  75
  76 /* By default we scroll by a single line */
  77 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  78 #define CONFIG_CONSOLE_SCROLL_LINES 1
  79 #endif
  80
  81 /************************************************************************/
  82 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  83 /************************************************************************/
  84 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  85 #define CONSOLE_ROW_FIRST       lcd_console_address
  86 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  87 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  88                                         - CONSOLE_ROW_SIZE)
  89 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * console_rows)
  90 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  91
  92 #if (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16) || \
  93         (LCD_BPP == LCD_COLOR32)
  94 # define COLOR_MASK(c)          (c)
  95 #else
  96 # error Unsupported LCD BPP.
  97 #endif
  98
  99 DECLARE_GLOBAL_DATA_PTR;
 100
 101 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 102 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 103
 104 static int lcd_init(void *lcdbase);
 105
 106 static void *lcd_logo(void);
 107
 108 static void lcd_setfgcolor(int color);
 109 static void lcd_setbgcolor(int color);
 110
 111 static int lcd_color_fg;
 112 static int lcd_color_bg;
 113 int lcd_line_length;
 114
 115 char lcd_is_enabled = 0;
 116
 117 static short console_curr_col;
 118 static short console_curr_row;
 119 static short console_cols;
 120 static short console_rows;
 121
 122 static void *lcd_console_address;
 123 static void *lcd_base;                  /* Start of framebuffer memory  */
 124
 125 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 126
 127 /************************************************************************/
 128
 129 /* Flush LCD activity to the caches */
 130 void lcd_sync(void)
 131 {
 132         /*
 133          * flush_dcache_range() is declared in common.h but it seems that some
 134          * architectures do not actually implement it. Is there a way to find
 135          * out whether it exists? For now, ARM is safe.
 136          */
 137 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 138         int line_length;
 139
 140         if (lcd_flush_dcache)
 141                 flush_dcache_range((u32)lcd_base,
 142                         (u32)(lcd_base + lcd_get_size(&line_length)));
 143 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 144         static ulong last_sync;
 145
 146         if (get_timer(last_sync) > 10) {
 147                 sandbox_sdl_sync(lcd_base);
 148                 last_sync = get_timer(0);
 149         }
 150 #endif
 151 }
 152
 153 void lcd_set_flush_dcache(int flush)
 154 {
 155         lcd_flush_dcache = (flush != 0);
 156 }
 157
 158 /*----------------------------------------------------------------------*/
 159
 160 static void console_scrollup(void)
 161 {
 162         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 163
 164         /* Copy up rows ignoring those that will be overwritten */
 165         memcpy(CONSOLE_ROW_FIRST,
 166                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 167                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 168
 169         /* Clear the last rows */
 170 #if (LCD_BPP != LCD_COLOR32)
 171         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 172                 COLOR_MASK(lcd_color_bg),
 173                 CONSOLE_ROW_SIZE * rows);
 174 #else
 175         u32 *ppix = lcd_console_address +
 176                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
 177         u32 i;
 178         for (i = 0;
 179             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
 180             i++) {
 181                 *ppix++ = COLOR_MASK(lcd_color_bg);
 182         }
 183 #endif
 184         lcd_sync();
 185         console_curr_row -= rows;
 186 }
 187
 188 /*----------------------------------------------------------------------*/
 189
 190 static inline void console_back(void)
 191 {
 192         if (--console_curr_col < 0) {
 193                 console_curr_col = console_cols - 1;
 194                 if (--console_curr_row < 0)
 195                         console_curr_row = 0;
 196         }
 197
 198         lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH,
 199                     console_curr_row * VIDEO_FONT_HEIGHT, ' ');
 200 }
 201
 202 /*----------------------------------------------------------------------*/
 203
 204 static inline void console_newline(void)
 205 {
 206         console_curr_col = 0;
 207
 208         /* Check if we need to scroll the terminal */
 209         if (++console_curr_row >= console_rows)
 210                 console_scrollup();
 211         else
 212                 lcd_sync();
 213 }
 214
 215 /*----------------------------------------------------------------------*/
 216
 217 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 218 {
 219         lcd_putc(c);
 220 }
 221
 222 void lcd_putc(const char c)
 223 {
 224         if (!lcd_is_enabled) {
 225                 serial_putc(c);
 226
 227                 return;
 228         }
 229
 230         switch (c) {
 231         case '\r':
 232                 console_curr_col = 0;
 233
 234                 return;
 235         case '\n':
 236                 console_newline();
 237
 238                 return;
 239         case '\t':      /* Tab (8 chars alignment) */
 240                 console_curr_col +=  8;
 241                 console_curr_col &= ~7;
 242
 243                 if (console_curr_col >= console_cols)
 244                         console_newline();
 245
 246                 return;
 247         case '\b':
 248                 console_back();
 249
 250                 return;
 251         default:
 252                 lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH,
 253                             console_curr_row * VIDEO_FONT_HEIGHT, c);
 254                 if (++console_curr_col >= console_cols)
 255                         console_newline();
 256         }
 257 }
 258
 259 /*----------------------------------------------------------------------*/
 260
 261 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 262 {
 263         lcd_puts(s);
 264 }
 265
 266 void lcd_puts(const char *s)
 267 {
 268         if (!lcd_is_enabled) {
 269                 serial_puts(s);
 270
 271                 return;
 272         }
 273
 274         while (*s)
 275                 lcd_putc(*s++);
 276
 277         lcd_sync();
 278 }
 279
 280 /*----------------------------------------------------------------------*/
 281
 282 void lcd_printf(const char *fmt, ...)
 283 {
 284         va_list args;
 285         char buf[CONFIG_SYS_PBSIZE];
 286
 287         va_start(args, fmt);
 288         vsprintf(buf, fmt, args);
 289         va_end(args);
 290
 291         lcd_puts(buf);
 292 }
 293
 294 /************************************************************************/
 295 /* ** Low-Level Graphics Routines                                       */
 296 /************************************************************************/
 297
 298 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 299 {
 300         uchar *dest;
 301         ushort row;
 302
 303 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 304         y += BMP_LOGO_HEIGHT;
 305 #endif
 306
 307         dest = (uchar *)(lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP)/8);
 308
 309         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 310                 uchar *s = str;
 311                 int i;
 312 #if LCD_BPP == LCD_COLOR16
 313                 ushort *d = (ushort *)dest;
 314 #elif LCD_BPP == LCD_COLOR32
 315                 u32 *d = (u32 *)dest;
 316 #else
 317                 uchar *d = dest;
 318 #endif
 319
 320                 for (i = 0; i < count; ++i) {
 321                         uchar c, bits;
 322
 323                         c = *s++;
 324                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 325
 326                         for (c = 0; c < 8; ++c) {
 327                                 *d++ = (bits & 0x80) ?
 328                                                 lcd_color_fg : lcd_color_bg;
 329                                 bits <<= 1;
 330                         }
 331                 }
 332         }
 333 }
 334
 335 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 336 {
 337         lcd_drawchars(x, y, &c, 1);
 338 }
 339
 340 /************************************************************************/
 341 /**  Small utility to check that you got the colours right              */
 342 /************************************************************************/
 343 #ifdef LCD_TEST_PATTERN
 344
 345 #define N_BLK_VERT      2
 346 #define N_BLK_HOR       3
 347
 348 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 349         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 350         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 351 };
 352
 353 static void test_pattern(void)
 354 {
 355         ushort v_max  = panel_info.vl_row;
 356         ushort h_max  = panel_info.vl_col;
 357         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 358         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 359         ushort v, h;
 360         uchar *pix = (uchar *)lcd_base;
 361
 362         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 363                 h_max, v_max, h_step, v_step);
 364
 365         /* WARNING: Code silently assumes 8bit/pixel */
 366         for (v = 0; v < v_max; ++v) {
 367                 uchar iy = v / v_step;
 368                 for (h = 0; h < h_max; ++h) {
 369                         uchar ix = N_BLK_HOR * iy + h / h_step;
 370                         *pix++ = test_colors[ix];
 371                 }
 372         }
 373 }
 374 #endif /* LCD_TEST_PATTERN */
 375
 376
 377 /************************************************************************/
 378 /* ** GENERIC Initialization Routines                                   */
 379 /************************************************************************/
 380 /*
 381  * With most lcd drivers the line length is set up
 382  * by calculating it from panel_info parameters. Some
 383  * drivers need to calculate the line length differently,
 384  * so make the function weak to allow overriding it.
 385  */
 386 __weak int lcd_get_size(int *line_length)
 387 {
 388         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 389         return *line_length * panel_info.vl_row;
 390 }
 391
 392 int drv_lcd_init(void)
 393 {
 394         struct stdio_dev lcddev;
 395         int rc;
 396
 397         lcd_base = map_sysmem(gd->fb_base, 0);
 398
 399         lcd_init(lcd_base);             /* LCD initialization */
 400
 401         /* Device initialization */
 402         memset(&lcddev, 0, sizeof(lcddev));
 403
 404         strcpy(lcddev.name, "lcd");
 405         lcddev.ext   = 0;                       /* No extensions */
 406         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 407         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 408         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 409
 410         rc = stdio_register(&lcddev);
 411
 412         return (rc == 0) ? 1 : rc;
 413 }
 414
 415 /*----------------------------------------------------------------------*/
 416 void lcd_clear(void)
 417 {
 418 #if LCD_BPP == LCD_COLOR8
 419         /* Setting the palette */
 420         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 421         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 422         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 423         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 424         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 425         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 426         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 427         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 428         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 429 #endif
 430
 431 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 432         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 433         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 434 #else
 435         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 436         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 437 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 438
 439 #ifdef  LCD_TEST_PATTERN
 440         test_pattern();
 441 #else
 442         /* set framebuffer to background color */
 443 #if (LCD_BPP != LCD_COLOR32)
 444         memset((char *)lcd_base,
 445                 COLOR_MASK(lcd_color_bg),
 446                 lcd_line_length * panel_info.vl_row);
 447 #else
 448         u32 *ppix = lcd_base;
 449         u32 i;
 450         for (i = 0;
 451            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 452            i++) {
 453                 *ppix++ = COLOR_MASK(lcd_color_bg);
 454         }
 455 #endif
 456 #endif
 457         /* Paint the logo and retrieve LCD base address */
 458         debug("[LCD] Drawing the logo...\n");
 459         lcd_console_address = lcd_logo();
 460
 461 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 462         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 463         console_rows /= VIDEO_FONT_HEIGHT;
 464 #else
 465         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 466 #endif
 467         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 468         console_curr_col = 0;
 469         console_curr_row = 0;
 470         lcd_sync();
 471 }
 472
 473 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 474                         char *const argv[])
 475 {
 476         lcd_clear();
 477         return 0;
 478 }
 479
 480 U_BOOT_CMD(
 481         cls,    1,      1,      do_lcd_clear,
 482         "clear screen",
 483         ""
 484 );
 485
 486 /*----------------------------------------------------------------------*/
 487
 488 static int lcd_init(void *lcdbase)
 489 {
 490         /* Initialize the lcd controller */
 491         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 492
 493         lcd_ctrl_init(lcdbase);
 494
 495         /*
 496          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 497          * the 'lcdbase' argument and uses custom lcd base address
 498          * by setting up gd->fb_base. Check for this condition and fixup
 499          * 'lcd_base' address.
 500          */
 501         if (map_to_sysmem(lcdbase) != gd->fb_base)
 502                 lcd_base = map_sysmem(gd->fb_base, 0);
 503
 504         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 505
 506         lcd_get_size(&lcd_line_length);
 507         lcd_is_enabled = 1;
 508         lcd_clear();
 509         lcd_enable();
 510
 511         /* Initialize the console */
 512         console_curr_col = 0;
 513 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 514         console_curr_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 515 #else
 516         console_curr_row = 1;   /* leave 1 blank line below logo */
 517 #endif
 518
 519         return 0;
 520 }
 521
 522
 523 /************************************************************************/
 524 /* ** ROM capable initialization part - needed to reserve FB memory     */
 525 /************************************************************************/
 526 /*
 527  * This is called early in the system initialization to grab memory
 528  * for the LCD controller.
 529  * Returns new address for monitor, after reserving LCD buffer memory
 530  *
 531  * Note that this is running from ROM, so no write access to global data.
 532  */
 533 ulong lcd_setmem(ulong addr)
 534 {
 535         ulong size;
 536         int line_length;
 537
 538         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 539                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 540
 541         size = lcd_get_size(&line_length);
 542
 543         /* Round up to nearest full page, or MMU section if defined */
 544         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 545         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 546
 547         /* Allocate pages for the frame buffer. */
 548         addr -= size;
 549
 550         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 551               size >> 10, addr);
 552
 553         return addr;
 554 }
 555
 556 /*----------------------------------------------------------------------*/
 557
 558 static void lcd_setfgcolor(int color)
 559 {
 560         lcd_color_fg = color;
 561 }
 562
 563 /*----------------------------------------------------------------------*/
 564
 565 static void lcd_setbgcolor(int color)
 566 {
 567         lcd_color_bg = color;
 568 }
 569
 570 /************************************************************************/
 571 /* ** Chipset depending Bitmap / Logo stuff...                          */
 572 /************************************************************************/
 573 static inline ushort *configuration_get_cmap(void)
 574 {
 575 #if defined CONFIG_CPU_PXA
 576         struct pxafb_info *fbi = &panel_info.pxa;
 577         return (ushort *)fbi->palette;
 578 #elif defined(CONFIG_MPC823)
 579         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 580         cpm8xx_t *cp = &(immr->im_cpm);
 581         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 582 #elif defined(CONFIG_ATMEL_LCD)
 583         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 584 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 585         return panel_info.cmap;
 586 #elif defined(CONFIG_LCD_LOGO)
 587         return bmp_logo_palette;
 588 #else
 589         return NULL;
 590 #endif
 591 }
 592
 593 #ifdef CONFIG_LCD_LOGO
 594 void bitmap_plot(int x, int y)
 595 {
 596 #ifdef CONFIG_ATMEL_LCD
 597         uint *cmap = (uint *)bmp_logo_palette;
 598 #else
 599         ushort *cmap = (ushort *)bmp_logo_palette;
 600 #endif
 601         ushort i, j;
 602         uchar *bmap;
 603         uchar *fb;
 604         ushort *fb16;
 605 #if defined(CONFIG_MPC823)
 606         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 607         cpm8xx_t *cp = &(immr->im_cpm);
 608 #endif
 609         unsigned bpix = NBITS(panel_info.vl_bpix);
 610
 611         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 612                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 613                 ARRAY_SIZE(bmp_logo_palette));
 614
 615         bmap = &bmp_logo_bitmap[0];
 616         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 617
 618         if (bpix < 12) {
 619                 /* Leave room for default color map
 620                  * default case: generic system with no cmap (most likely 16bpp)
 621                  * cmap was set to the source palette, so no change is done.
 622                  * This avoids even more ifdefs in the next stanza
 623                  */
 624 #if defined(CONFIG_MPC823)
 625                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 626 #elif defined(CONFIG_ATMEL_LCD)
 627                 cmap = (uint *)configuration_get_cmap();
 628 #else
 629                 cmap = configuration_get_cmap();
 630 #endif
 631
 632                 WATCHDOG_RESET();
 633
 634                 /* Set color map */
 635                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 636                         ushort colreg = bmp_logo_palette[i];
 637 #ifdef CONFIG_ATMEL_LCD
 638                         uint lut_entry;
 639 #ifdef CONFIG_ATMEL_LCD_BGR555
 640                         lut_entry = ((colreg & 0x000F) << 11) |
 641                                         ((colreg & 0x00F0) <<  2) |
 642                                         ((colreg & 0x0F00) >>  7);
 643 #else /* CONFIG_ATMEL_LCD_RGB565 */
 644                         lut_entry = ((colreg & 0x000F) << 1) |
 645                                         ((colreg & 0x00F0) << 3) |
 646                                         ((colreg & 0x0F00) << 4);
 647 #endif
 648                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 649                         cmap++;
 650 #else /* !CONFIG_ATMEL_LCD */
 651                         *cmap++ = colreg;
 652 #endif /* CONFIG_ATMEL_LCD */
 653                 }
 654
 655                 WATCHDOG_RESET();
 656
 657                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 658                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 659                         bmap += BMP_LOGO_WIDTH;
 660                         fb += panel_info.vl_col;
 661                 }
 662         }
 663         else { /* true color mode */
 664                 u16 col16;
 665                 fb16 = (ushort *)fb;
 666                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 667                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 668                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 669                                 fb16[j] =
 670                                         ((col16 & 0x000F) << 1) |
 671                                         ((col16 & 0x00F0) << 3) |
 672                                         ((col16 & 0x0F00) << 4);
 673                                 }
 674                         bmap += BMP_LOGO_WIDTH;
 675                         fb16 += panel_info.vl_col;
 676                 }
 677         }
 678
 679         WATCHDOG_RESET();
 680         lcd_sync();
 681 }
 682 #else
 683 static inline void bitmap_plot(int x, int y) {}
 684 #endif /* CONFIG_LCD_LOGO */
 685
 686 /*----------------------------------------------------------------------*/
 687 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 688 /*
 689  * Display the BMP file located at address bmp_image.
 690  * Only uncompressed.
 691  */
 692
 693 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 694 #define BMP_ALIGN_CENTER        0x7FFF
 695
 696 static void splash_align_axis(int *axis, unsigned long panel_size,
 697                                         unsigned long picture_size)
 698 {
 699         unsigned long panel_picture_delta = panel_size - picture_size;
 700         unsigned long axis_alignment;
 701
 702         if (*axis == BMP_ALIGN_CENTER)
 703                 axis_alignment = panel_picture_delta / 2;
 704         else if (*axis < 0)
 705                 axis_alignment = panel_picture_delta + *axis + 1;
 706         else
 707                 return;
 708
 709         *axis = max(0, (int)axis_alignment);
 710 }
 711 #endif
 712
 713
 714 #ifdef CONFIG_LCD_BMP_RLE8
 715
 716 #define BMP_RLE8_ESCAPE         0
 717 #define BMP_RLE8_EOL            0
 718 #define BMP_RLE8_EOBMP          1
 719 #define BMP_RLE8_DELTA          2
 720
 721 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 722                                   int cnt)
 723 {
 724         while (cnt > 0) {
 725                 *(*fbp)++ = cmap[*bmap++];
 726                 cnt--;
 727         }
 728 }
 729
 730 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 731 {
 732         ushort *fb = *fbp;
 733         int cnt_8copy = cnt >> 3;
 734
 735         cnt -= cnt_8copy << 3;
 736         while (cnt_8copy > 0) {
 737                 *fb++ = c;
 738                 *fb++ = c;
 739                 *fb++ = c;
 740                 *fb++ = c;
 741                 *fb++ = c;
 742                 *fb++ = c;
 743                 *fb++ = c;
 744                 *fb++ = c;
 745                 cnt_8copy--;
 746         }
 747         while (cnt > 0) {
 748                 *fb++ = c;
 749                 cnt--;
 750         }
 751         *fbp = fb;
 752 }
 753
 754 /*
 755  * Do not call this function directly, must be called from lcd_display_bitmap.
 756  */
 757 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 758                                     int x_off, int y_off)
 759 {
 760         uchar *bmap;
 761         ulong width, height;
 762         ulong cnt, runlen;
 763         int x, y;
 764         int decode = 1;
 765
 766         width = get_unaligned_le32(&bmp->header.width);
 767         height = get_unaligned_le32(&bmp->header.height);
 768         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 769
 770         x = 0;
 771         y = height - 1;
 772
 773         while (decode) {
 774                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 775                         switch (bmap[1]) {
 776                         case BMP_RLE8_EOL:
 777                                 /* end of line */
 778                                 bmap += 2;
 779                                 x = 0;
 780                                 y--;
 781                                 /* 16bpix, 2-byte per pixel, width should *2 */
 782                                 fb -= (width * 2 + lcd_line_length);
 783                                 break;
 784                         case BMP_RLE8_EOBMP:
 785                                 /* end of bitmap */
 786                                 decode = 0;
 787                                 break;
 788                         case BMP_RLE8_DELTA:
 789                                 /* delta run */
 790                                 x += bmap[2];
 791                                 y -= bmap[3];
 792                                 /* 16bpix, 2-byte per pixel, x should *2 */
 793                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 794                                         * lcd_line_length + (x + x_off) * 2);
 795                                 bmap += 4;
 796                                 break;
 797                         default:
 798                                 /* unencoded run */
 799                                 runlen = bmap[1];
 800                                 bmap += 2;
 801                                 if (y < height) {
 802                                         if (x < width) {
 803                                                 if (x + runlen > width)
 804                                                         cnt = width - x;
 805                                                 else
 806                                                         cnt = runlen;
 807                                                 draw_unencoded_bitmap(
 808                                                         (ushort **)&fb,
 809                                                         bmap, cmap, cnt);
 810                                         }
 811                                         x += runlen;
 812                                 }
 813                                 bmap += runlen;
 814                                 if (runlen & 1)
 815                                         bmap++;
 816                         }
 817                 } else {
 818                         /* encoded run */
 819                         if (y < height) {
 820                                 runlen = bmap[0];
 821                                 if (x < width) {
 822                                         /* aggregate the same code */
 823                                         while (bmap[0] == 0xff &&
 824                                                bmap[2] != BMP_RLE8_ESCAPE &&
 825                                                bmap[1] == bmap[3]) {
 826                                                 runlen += bmap[2];
 827                                                 bmap += 2;
 828                                         }
 829                                         if (x + runlen > width)
 830                                                 cnt = width - x;
 831                                         else
 832                                                 cnt = runlen;
 833                                         draw_encoded_bitmap((ushort **)&fb,
 834                                                 cmap[bmap[1]], cnt);
 835                                 }
 836                                 x += runlen;
 837                         }
 838                         bmap += 2;
 839                 }
 840         }
 841 }
 842 #endif
 843
 844 #if defined(CONFIG_MPC823)
 845 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 846 #else
 847 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 848 #endif
 849
 850 #if defined(CONFIG_BMP_16BPP)
 851 #if defined(CONFIG_ATMEL_LCD_BGR555)
 852 static inline void fb_put_word(uchar **fb, uchar **from)
 853 {
 854         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 855         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 856         *from += 2;
 857 }
 858 #else
 859 static inline void fb_put_word(uchar **fb, uchar **from)
 860 {
 861         *(*fb)++ = *(*from)++;
 862         *(*fb)++ = *(*from)++;
 863 }
 864 #endif
 865 #endif /* CONFIG_BMP_16BPP */
 866
 867 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 868 {
 869         ushort *cmap = NULL;
 870         ushort *cmap_base = NULL;
 871         ushort i, j;
 872         uchar *fb;
 873         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 874         uchar *bmap;
 875         ushort padded_width;
 876         unsigned long width, height, byte_width;
 877         unsigned long pwidth = panel_info.vl_col;
 878         unsigned colors, bpix, bmp_bpix;
 879
 880         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 881                 bmp->header.signature[1] == 'M')) {
 882                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 883
 884                 return 1;
 885         }
 886
 887         width = get_unaligned_le32(&bmp->header.width);
 888         height = get_unaligned_le32(&bmp->header.height);
 889         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 890
 891         colors = 1 << bmp_bpix;
 892
 893         bpix = NBITS(panel_info.vl_bpix);
 894
 895         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 896                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 897                         bpix, bmp_bpix);
 898
 899                 return 1;
 900         }
 901
 902         /*
 903          * We support displaying 8bpp BMPs on 16bpp LCDs
 904          * and displaying 24bpp BMPs on 32bpp LCDs
 905          * */
 906         if (bpix != bmp_bpix &&
 907             !(bmp_bpix == 8 && bpix == 16) &&
 908             !(bmp_bpix == 24 && bpix == 32)) {
 909                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 910                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 911                 return 1;
 912         }
 913
 914         debug("Display-bmp: %d x %d  with %d colors\n",
 915                 (int)width, (int)height, (int)colors);
 916
 917         if (bmp_bpix == 8) {
 918                 cmap = configuration_get_cmap();
 919                 cmap_base = cmap;
 920
 921                 /* Set color map */
 922                 for (i = 0; i < colors; ++i) {
 923                         bmp_color_table_entry_t cte = bmp->color_table[i];
 924 #if !defined(CONFIG_ATMEL_LCD)
 925                         ushort colreg =
 926                                 ( ((cte.red)   << 8) & 0xf800) |
 927                                 ( ((cte.green) << 3) & 0x07e0) |
 928                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 929                         *cmap = colreg;
 930 #if defined(CONFIG_MPC823)
 931                         cmap--;
 932 #else
 933                         cmap++;
 934 #endif
 935 #else /* CONFIG_ATMEL_LCD */
 936                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 937 #endif
 938                 }
 939         }
 940
 941         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 942
 943 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 944         splash_align_axis(&x, pwidth, width);
 945         splash_align_axis(&y, panel_info.vl_row, height);
 946 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 947
 948         if ((x + width) > pwidth)
 949                 width = pwidth - x;
 950         if ((y + height) > panel_info.vl_row)
 951                 height = panel_info.vl_row - y;
 952
 953         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 954         fb   = (uchar *)(lcd_base +
 955                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 956
 957         switch (bmp_bpix) {
 958         case 1: /* pass through */
 959         case 8: {
 960 #ifdef CONFIG_LCD_BMP_RLE8
 961                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 962                 if (compression == BMP_BI_RLE8) {
 963                         if (bpix != 16) {
 964                                 /* TODO implement render code for bpix != 16 */
 965                                 printf("Error: only support 16 bpix");
 966                                 return 1;
 967                         }
 968                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 969                         break;
 970                 }
 971 #endif
 972
 973                 if (bpix != 16)
 974                         byte_width = width;
 975                 else
 976                         byte_width = width * 2;
 977
 978                 for (i = 0; i < height; ++i) {
 979                         WATCHDOG_RESET();
 980                         for (j = 0; j < width; j++) {
 981                                 if (bpix != 16) {
 982                                         FB_PUT_BYTE(fb, bmap);
 983                                 } else {
 984                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
 985                                         fb += sizeof(uint16_t) / sizeof(*fb);
 986                                 }
 987                         }
 988                         bmap += (padded_width - width);
 989                         fb -= byte_width + lcd_line_length;
 990                 }
 991                 break;
 992         }
 993 #if defined(CONFIG_BMP_16BPP)
 994         case 16:
 995                 for (i = 0; i < height; ++i) {
 996                         WATCHDOG_RESET();
 997                         for (j = 0; j < width; j++)
 998                                 fb_put_word(&fb, &bmap);
 999
1000                         bmap += (padded_width - width) * 2;
1001                         fb -= width * 2 + lcd_line_length;
1002                 }
1003                 break;
1004 #endif /* CONFIG_BMP_16BPP */
1005 #if defined(CONFIG_BMP_24BMP)
1006         case 24:
1007                 for (i = 0; i < height; ++i) {
1008                         for (j = 0; j < width; j++) {
1009                                 *(fb++) = *(bmap++);
1010                                 *(fb++) = *(bmap++);
1011                                 *(fb++) = *(bmap++);
1012                                 *(fb++) = 0;
1013                         }
1014                         fb -= lcd_line_length + width * (bpix / 8);
1015                 }
1016                 break;
1017 #endif /* CONFIG_BMP_24BMP */
1018 #if defined(CONFIG_BMP_32BPP)
1019         case 32:
1020                 for (i = 0; i < height; ++i) {
1021                         for (j = 0; j < width; j++) {
1022                                 *(fb++) = *(bmap++);
1023                                 *(fb++) = *(bmap++);
1024                                 *(fb++) = *(bmap++);
1025                                 *(fb++) = *(bmap++);
1026                         }
1027                         fb -= lcd_line_length + width * (bpix / 8);
1028                 }
1029                 break;
1030 #endif /* CONFIG_BMP_32BPP */
1031         default:
1032                 break;
1033         };
1034
1035         lcd_sync();
1036         return 0;
1037 }
1038 #endif
1039
1040 static void *lcd_logo(void)
1041 {
1042 #ifdef CONFIG_SPLASH_SCREEN
1043         char *s;
1044         ulong addr;
1045         static int do_splash = 1;
1046
1047         if (do_splash && (s = getenv("splashimage")) != NULL) {
1048                 int x = 0, y = 0;
1049                 do_splash = 0;
1050
1051                 if (splash_screen_prepare())
1052                         return (void *)lcd_base;
1053
1054                 addr = simple_strtoul (s, NULL, 16);
1055
1056                 splash_get_pos(&x, &y);
1057
1058                 if (bmp_display(addr, x, y) == 0)
1059                         return (void *)lcd_base;
1060         }
1061 #endif /* CONFIG_SPLASH_SCREEN */
1062
1063         bitmap_plot(0, 0);
1064
1065 #ifdef CONFIG_LCD_INFO
1066         console_curr_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1067         console_curr_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1068         lcd_show_board_info();
1069 #endif /* CONFIG_LCD_INFO */
1070
1071 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1072         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1073 #else
1074         return (void *)lcd_base;
1075 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1076 }
1077
1078 #ifdef CONFIG_SPLASHIMAGE_GUARD
1079 static int on_splashimage(const char *name, const char *value, enum env_op op,
1080         int flags)
1081 {
1082         ulong addr;
1083         int aligned;
1084
1085         if (op == env_op_delete)
1086                 return 0;
1087
1088         addr = simple_strtoul(value, NULL, 16);
1089         /* See README.displaying-bmps */
1090         aligned = (addr % 4 == 2);
1091         if (!aligned) {
1092                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1093                 return -1;
1094         }
1095
1096         return 0;
1097 }
1098
1099 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1100 #endif
1101
1102 void lcd_position_cursor(unsigned col, unsigned row)
1103 {
1104         console_curr_col = min_t(short, col, console_cols - 1);
1105         console_curr_row = min_t(short, row, console_rows - 1);
1106 }
1107
1108 int lcd_get_pixel_width(void)
1109 {
1110         return panel_info.vl_col;
1111 }
1112
1113 int lcd_get_pixel_height(void)
1114 {
1115         return panel_info.vl_row;
1116 }
1117
1118 int lcd_get_screen_rows(void)
1119 {
1120         return console_rows;
1121 }
1122
1123 int lcd_get_screen_columns(void)
1124 {
1125         return console_cols;
1126 }
1127
1128 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1129 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1130 {
1131 #if LCD_BPP == LCD_COLOR16
1132         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1133                                        panel_info.vl_col, panel_info.vl_row,
1134                                        panel_info.vl_col * 2, "r5g6b5");
1135 #else
1136         return -1;
1137 #endif
1138 }
1139
1140 int lcd_dt_simplefb_add_node(void *blob)
1141 {
1142         static const char compat[] = "simple-framebuffer";
1143         static const char disabled[] = "disabled";
1144         int off, ret;
1145
1146         off = fdt_add_subnode(blob, 0, "framebuffer");
1147         if (off < 0)
1148                 return -1;
1149
1150         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1151         if (ret < 0)
1152                 return -1;
1153
1154         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1155         if (ret < 0)
1156                 return -1;
1157
1158         return lcd_dt_simplefb_configure_node(blob, off);
1159 }
1160
1161 int lcd_dt_simplefb_enable_existing_node(void *blob)
1162 {
1163         int off;
1164
1165         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1166         if (off < 0)
1167                 return -1;
1168
1169         return lcd_dt_simplefb_configure_node(blob, off);
1170 }
1171 #endif