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
  30 #include <splash.h>
  31
  32 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  33         defined(CONFIG_CPU_MONAHANS)
  34 #define CONFIG_CPU_PXA
  35 #include <asm/byteorder.h>
  36 #endif
  37
  38 #if defined(CONFIG_MPC823)
  39 #include <lcdvideo.h>
  40 #endif
  41
  42 #if defined(CONFIG_ATMEL_LCD)
  43 #include <atmel_lcdc.h>
  44 #endif
  45
  46 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  47 #include <libfdt.h>
  48 #endif
  49
  50 /************************************************************************/
  51 /* ** FONT DATA                                                         */
  52 /************************************************************************/
  53 #include <video_font.h>         /* Get font data, width and height      */
  54
  55 /************************************************************************/
  56 /* ** LOGO DATA                                                         */
  57 /************************************************************************/
  58 #ifdef CONFIG_LCD_LOGO
  59 # include <bmp_logo.h>          /* Get logo data, width and height      */
  60 # include <bmp_logo_data.h>
  61 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  62 #  error Default Color Map overlaps with Logo Color Map
  63 # endif
  64 #endif
  65
  66 #ifndef CONFIG_LCD_ALIGNMENT
  67 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  68 #endif
  69
  70 /* By default we scroll by a single line */
  71 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  72 #define CONFIG_CONSOLE_SCROLL_LINES 1
  73 #endif
  74
  75 /************************************************************************/
  76 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  77 /************************************************************************/
  78 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  79 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  80                                         / VIDEO_FONT_HEIGHT)
  81 #else
  82 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  83 #endif
  84
  85 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
  86 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  87 #define CONSOLE_ROW_FIRST       lcd_console_address
  88 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  89 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  90                                         - CONSOLE_ROW_SIZE)
  91 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
  92 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  93
  94 #if LCD_BPP == LCD_MONOCHROME
  95 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
  96                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
  97 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
  98 # define COLOR_MASK(c)          (c)
  99 #else
 100 # error Unsupported LCD BPP.
 101 #endif
 102
 103 DECLARE_GLOBAL_DATA_PTR;
 104
 105 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 106 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
 107 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 108
 109 static int lcd_init(void *lcdbase);
 110
 111 static void *lcd_logo(void);
 112
 113 static int lcd_getbgcolor(void);
 114 static void lcd_setfgcolor(int color);
 115 static void lcd_setbgcolor(int color);
 116
 117 static int lcd_color_fg;
 118 static int lcd_color_bg;
 119 int lcd_line_length;
 120
 121 char lcd_is_enabled = 0;
 122
 123 static short console_col;
 124 static short console_row;
 125
 126 static void *lcd_console_address;
 127 static void *lcd_base;                  /* Start of framebuffer memory  */
 128
 129 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 130
 131 /************************************************************************/
 132
 133 /* Flush LCD activity to the caches */
 134 void lcd_sync(void)
 135 {
 136         /*
 137          * flush_dcache_range() is declared in common.h but it seems that some
 138          * architectures do not actually implement it. Is there a way to find
 139          * out whether it exists? For now, ARM is safe.
 140          */
 141 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 142         int line_length;
 143
 144         if (lcd_flush_dcache)
 145                 flush_dcache_range((u32)lcd_base,
 146                         (u32)(lcd_base + lcd_get_size(&line_length)));
 147 #endif
 148 }
 149
 150 void lcd_set_flush_dcache(int flush)
 151 {
 152         lcd_flush_dcache = (flush != 0);
 153 }
 154
 155 /*----------------------------------------------------------------------*/
 156
 157 static void console_scrollup(void)
 158 {
 159         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 160
 161         /* Copy up rows ignoring those that will be overwritten */
 162         memcpy(CONSOLE_ROW_FIRST,
 163                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 164                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 165
 166         /* Clear the last rows */
 167         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 168                 COLOR_MASK(lcd_color_bg),
 169                 CONSOLE_ROW_SIZE * rows);
 170
 171         lcd_sync();
 172         console_row -= rows;
 173 }
 174
 175 /*----------------------------------------------------------------------*/
 176
 177 static inline void console_back(void)
 178 {
 179         if (--console_col < 0) {
 180                 console_col = CONSOLE_COLS-1 ;
 181                 if (--console_row < 0)
 182                         console_row = 0;
 183         }
 184
 185         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 186                 console_row * VIDEO_FONT_HEIGHT, ' ');
 187 }
 188
 189 /*----------------------------------------------------------------------*/
 190
 191 static inline void console_newline(void)
 192 {
 193         console_col = 0;
 194
 195         /* Check if we need to scroll the terminal */
 196         if (++console_row >= CONSOLE_ROWS)
 197                 console_scrollup();
 198         else
 199                 lcd_sync();
 200 }
 201
 202 /*----------------------------------------------------------------------*/
 203
 204 void lcd_putc(const char c)
 205 {
 206         if (!lcd_is_enabled) {
 207                 serial_putc(c);
 208
 209                 return;
 210         }
 211
 212         switch (c) {
 213         case '\r':
 214                 console_col = 0;
 215
 216                 return;
 217         case '\n':
 218                 console_newline();
 219
 220                 return;
 221         case '\t':      /* Tab (8 chars alignment) */
 222                 console_col +=  8;
 223                 console_col &= ~7;
 224
 225                 if (console_col >= CONSOLE_COLS)
 226                         console_newline();
 227
 228                 return;
 229         case '\b':
 230                 console_back();
 231
 232                 return;
 233         default:
 234                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 235                         console_row * VIDEO_FONT_HEIGHT, c);
 236                 if (++console_col >= CONSOLE_COLS)
 237                         console_newline();
 238         }
 239 }
 240
 241 /*----------------------------------------------------------------------*/
 242
 243 void lcd_puts(const char *s)
 244 {
 245         if (!lcd_is_enabled) {
 246                 serial_puts(s);
 247
 248                 return;
 249         }
 250
 251         while (*s)
 252                 lcd_putc(*s++);
 253
 254         lcd_sync();
 255 }
 256
 257 /*----------------------------------------------------------------------*/
 258
 259 void lcd_printf(const char *fmt, ...)
 260 {
 261         va_list args;
 262         char buf[CONFIG_SYS_PBSIZE];
 263
 264         va_start(args, fmt);
 265         vsprintf(buf, fmt, args);
 266         va_end(args);
 267
 268         lcd_puts(buf);
 269 }
 270
 271 /************************************************************************/
 272 /* ** Low-Level Graphics Routines                                       */
 273 /************************************************************************/
 274
 275 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 276 {
 277         uchar *dest;
 278         ushort row;
 279
 280 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 281         y += BMP_LOGO_HEIGHT;
 282 #endif
 283
 284 #if LCD_BPP == LCD_MONOCHROME
 285         ushort off  = x * (1 << LCD_BPP) % 8;
 286 #endif
 287
 288         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 289
 290         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 291                 uchar *s = str;
 292                 int i;
 293 #if LCD_BPP == LCD_COLOR16
 294                 ushort *d = (ushort *)dest;
 295 #else
 296                 uchar *d = dest;
 297 #endif
 298
 299 #if LCD_BPP == LCD_MONOCHROME
 300                 uchar rest = *d & -(1 << (8 - off));
 301                 uchar sym;
 302 #endif
 303                 for (i = 0; i < count; ++i) {
 304                         uchar c, bits;
 305
 306                         c = *s++;
 307                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 308
 309 #if LCD_BPP == LCD_MONOCHROME
 310                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 311                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 312
 313                         *d++ = rest | (sym >> off);
 314                         rest = sym << (8-off);
 315 #elif LCD_BPP == LCD_COLOR8
 316                         for (c = 0; c < 8; ++c) {
 317                                 *d++ = (bits & 0x80) ?
 318                                                 lcd_color_fg : lcd_color_bg;
 319                                 bits <<= 1;
 320                         }
 321 #elif LCD_BPP == LCD_COLOR16
 322                         for (c = 0; c < 8; ++c) {
 323                                 *d++ = (bits & 0x80) ?
 324                                                 lcd_color_fg : lcd_color_bg;
 325                                 bits <<= 1;
 326                         }
 327 #endif
 328                 }
 329 #if LCD_BPP == LCD_MONOCHROME
 330                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 331 #endif
 332         }
 333 }
 334
 335 /*----------------------------------------------------------------------*/
 336
 337 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 338 {
 339         lcd_drawchars(x, y, s, strlen((char *)s));
 340 }
 341
 342 /*----------------------------------------------------------------------*/
 343
 344 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 345 {
 346         lcd_drawchars(x, y, &c, 1);
 347 }
 348
 349 /************************************************************************/
 350 /**  Small utility to check that you got the colours right              */
 351 /************************************************************************/
 352 #ifdef LCD_TEST_PATTERN
 353
 354 #define N_BLK_VERT      2
 355 #define N_BLK_HOR       3
 356
 357 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 358         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 359         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 360 };
 361
 362 static void test_pattern(void)
 363 {
 364         ushort v_max  = panel_info.vl_row;
 365         ushort h_max  = panel_info.vl_col;
 366         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 367         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 368         ushort v, h;
 369         uchar *pix = (uchar *)lcd_base;
 370
 371         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 372                 h_max, v_max, h_step, v_step);
 373
 374         /* WARNING: Code silently assumes 8bit/pixel */
 375         for (v = 0; v < v_max; ++v) {
 376                 uchar iy = v / v_step;
 377                 for (h = 0; h < h_max; ++h) {
 378                         uchar ix = N_BLK_HOR * iy + h / h_step;
 379                         *pix++ = test_colors[ix];
 380                 }
 381         }
 382 }
 383 #endif /* LCD_TEST_PATTERN */
 384
 385
 386 /************************************************************************/
 387 /* ** GENERIC Initialization Routines                                   */
 388 /************************************************************************/
 389
 390 int lcd_get_size(int *line_length)
 391 {
 392         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 393         return *line_length * panel_info.vl_row;
 394 }
 395
 396 int drv_lcd_init(void)
 397 {
 398         struct stdio_dev lcddev;
 399         int rc;
 400
 401         lcd_base = (void *) gd->fb_base;
 402
 403         lcd_init(lcd_base);             /* LCD initialization */
 404
 405         /* Device initialization */
 406         memset(&lcddev, 0, sizeof(lcddev));
 407
 408         strcpy(lcddev.name, "lcd");
 409         lcddev.ext   = 0;                       /* No extensions */
 410         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 411         lcddev.putc  = lcd_putc;                /* 'putc' function */
 412         lcddev.puts  = lcd_puts;                /* 'puts' function */
 413
 414         rc = stdio_register(&lcddev);
 415
 416         return (rc == 0) ? 1 : rc;
 417 }
 418
 419 /*----------------------------------------------------------------------*/
 420 void lcd_clear(void)
 421 {
 422 #if LCD_BPP == LCD_MONOCHROME
 423         /* Setting the palette */
 424         lcd_initcolregs();
 425
 426 #elif LCD_BPP == LCD_COLOR8
 427         /* Setting the palette */
 428         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 429         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 430         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 431         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 432         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 433         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 434         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 435         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 436         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 437 #endif
 438
 439 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 440         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 441         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 442 #else
 443         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 444         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 445 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 446
 447 #ifdef  LCD_TEST_PATTERN
 448         test_pattern();
 449 #else
 450         /* set framebuffer to background color */
 451         memset((char *)lcd_base,
 452                 COLOR_MASK(lcd_getbgcolor()),
 453                 lcd_line_length * panel_info.vl_row);
 454 #endif
 455         /* Paint the logo and retrieve LCD base address */
 456         debug("[LCD] Drawing the logo...\n");
 457         lcd_console_address = lcd_logo();
 458
 459         console_col = 0;
 460         console_row = 0;
 461         lcd_sync();
 462 }
 463
 464 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 465                         char *const argv[])
 466 {
 467         lcd_clear();
 468         return 0;
 469 }
 470
 471 U_BOOT_CMD(
 472         cls,    1,      1,      do_lcd_clear,
 473         "clear screen",
 474         ""
 475 );
 476
 477 /*----------------------------------------------------------------------*/
 478
 479 static int lcd_init(void *lcdbase)
 480 {
 481         /* Initialize the lcd controller */
 482         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 483
 484         lcd_ctrl_init(lcdbase);
 485
 486         /*
 487          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 488          * the 'lcdbase' argument and uses custom lcd base address
 489          * by setting up gd->fb_base. Check for this condition and fixup
 490          * 'lcd_base' address.
 491          */
 492         if ((unsigned long)lcdbase != gd->fb_base)
 493                 lcd_base = (void *)gd->fb_base;
 494
 495         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 496
 497         lcd_get_size(&lcd_line_length);
 498         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 499         lcd_is_enabled = 1;
 500         lcd_clear();
 501         lcd_enable();
 502
 503         /* Initialize the console */
 504         console_col = 0;
 505 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 506         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 507 #else
 508         console_row = 1;        /* leave 1 blank line below logo */
 509 #endif
 510
 511         return 0;
 512 }
 513
 514
 515 /************************************************************************/
 516 /* ** ROM capable initialization part - needed to reserve FB memory     */
 517 /************************************************************************/
 518 /*
 519  * This is called early in the system initialization to grab memory
 520  * for the LCD controller.
 521  * Returns new address for monitor, after reserving LCD buffer memory
 522  *
 523  * Note that this is running from ROM, so no write access to global data.
 524  */
 525 ulong lcd_setmem(ulong addr)
 526 {
 527         ulong size;
 528         int line_length;
 529
 530         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 531                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 532
 533         size = lcd_get_size(&line_length);
 534
 535         /* Round up to nearest full page, or MMU section if defined */
 536         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 537         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 538
 539         /* Allocate pages for the frame buffer. */
 540         addr -= size;
 541
 542         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 543               size >> 10, addr);
 544
 545         return addr;
 546 }
 547
 548 /*----------------------------------------------------------------------*/
 549
 550 static void lcd_setfgcolor(int color)
 551 {
 552         lcd_color_fg = color;
 553 }
 554
 555 /*----------------------------------------------------------------------*/
 556
 557 static void lcd_setbgcolor(int color)
 558 {
 559         lcd_color_bg = color;
 560 }
 561
 562 /*----------------------------------------------------------------------*/
 563
 564 int lcd_getfgcolor(void)
 565 {
 566         return lcd_color_fg;
 567 }
 568
 569 /*----------------------------------------------------------------------*/
 570
 571 static int lcd_getbgcolor(void)
 572 {
 573         return lcd_color_bg;
 574 }
 575
 576 /************************************************************************/
 577 /* ** Chipset depending Bitmap / Logo stuff...                          */
 578 /************************************************************************/
 579 static inline ushort *configuration_get_cmap(void)
 580 {
 581 #if defined CONFIG_CPU_PXA
 582         struct pxafb_info *fbi = &panel_info.pxa;
 583         return (ushort *)fbi->palette;
 584 #elif defined(CONFIG_MPC823)
 585         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 586         cpm8xx_t *cp = &(immr->im_cpm);
 587         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 588 #elif defined(CONFIG_ATMEL_LCD)
 589         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 590 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 591         return panel_info.cmap;
 592 #elif defined(CONFIG_LCD_LOGO)
 593         return bmp_logo_palette;
 594 #else
 595         return NULL;
 596 #endif
 597 }
 598
 599 #ifdef CONFIG_LCD_LOGO
 600 void bitmap_plot(int x, int y)
 601 {
 602 #ifdef CONFIG_ATMEL_LCD
 603         uint *cmap = (uint *)bmp_logo_palette;
 604 #else
 605         ushort *cmap = (ushort *)bmp_logo_palette;
 606 #endif
 607         ushort i, j;
 608         uchar *bmap;
 609         uchar *fb;
 610         ushort *fb16;
 611 #if defined(CONFIG_MPC823)
 612         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 613         cpm8xx_t *cp = &(immr->im_cpm);
 614 #endif
 615         unsigned bpix = NBITS(panel_info.vl_bpix);
 616
 617         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 618                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 619                 ARRAY_SIZE(bmp_logo_palette));
 620
 621         bmap = &bmp_logo_bitmap[0];
 622         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 623
 624         if (bpix < 12) {
 625                 /* Leave room for default color map
 626                  * default case: generic system with no cmap (most likely 16bpp)
 627                  * cmap was set to the source palette, so no change is done.
 628                  * This avoids even more ifdefs in the next stanza
 629                  */
 630 #if defined(CONFIG_MPC823)
 631                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 632 #elif defined(CONFIG_ATMEL_LCD)
 633                 cmap = (uint *)configuration_get_cmap();
 634 #else
 635                 cmap = configuration_get_cmap();
 636 #endif
 637
 638                 WATCHDOG_RESET();
 639
 640                 /* Set color map */
 641                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 642                         ushort colreg = bmp_logo_palette[i];
 643 #ifdef CONFIG_ATMEL_LCD
 644                         uint lut_entry;
 645 #ifdef CONFIG_ATMEL_LCD_BGR555
 646                         lut_entry = ((colreg & 0x000F) << 11) |
 647                                         ((colreg & 0x00F0) <<  2) |
 648                                         ((colreg & 0x0F00) >>  7);
 649 #else /* CONFIG_ATMEL_LCD_RGB565 */
 650                         lut_entry = ((colreg & 0x000F) << 1) |
 651                                         ((colreg & 0x00F0) << 3) |
 652                                         ((colreg & 0x0F00) << 4);
 653 #endif
 654                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 655                         cmap++;
 656 #else /* !CONFIG_ATMEL_LCD */
 657 #ifdef  CONFIG_SYS_INVERT_COLORS
 658                         *cmap++ = 0xffff - colreg;
 659 #else
 660                         *cmap++ = colreg;
 661 #endif
 662 #endif /* CONFIG_ATMEL_LCD */
 663                 }
 664
 665                 WATCHDOG_RESET();
 666
 667                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 668                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 669                         bmap += BMP_LOGO_WIDTH;
 670                         fb += panel_info.vl_col;
 671                 }
 672         }
 673         else { /* true color mode */
 674                 u16 col16;
 675                 fb16 = (ushort *)fb;
 676                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 677                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 678                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 679                                 fb16[j] =
 680                                         ((col16 & 0x000F) << 1) |
 681                                         ((col16 & 0x00F0) << 3) |
 682                                         ((col16 & 0x0F00) << 4);
 683                                 }
 684                         bmap += BMP_LOGO_WIDTH;
 685                         fb16 += panel_info.vl_col;
 686                 }
 687         }
 688
 689         WATCHDOG_RESET();
 690         lcd_sync();
 691 }
 692 #else
 693 static inline void bitmap_plot(int x, int y) {}
 694 #endif /* CONFIG_LCD_LOGO */
 695
 696 /*----------------------------------------------------------------------*/
 697 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 698 /*
 699  * Display the BMP file located at address bmp_image.
 700  * Only uncompressed.
 701  */
 702
 703 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 704 #define BMP_ALIGN_CENTER        0x7FFF
 705
 706 static void splash_align_axis(int *axis, unsigned long panel_size,
 707                                         unsigned long picture_size)
 708 {
 709         unsigned long panel_picture_delta = panel_size - picture_size;
 710         unsigned long axis_alignment;
 711
 712         if (*axis == BMP_ALIGN_CENTER)
 713                 axis_alignment = panel_picture_delta / 2;
 714         else if (*axis < 0)
 715                 axis_alignment = panel_picture_delta + *axis + 1;
 716         else
 717                 return;
 718
 719         *axis = max(0, axis_alignment);
 720 }
 721 #endif
 722
 723
 724 #ifdef CONFIG_LCD_BMP_RLE8
 725
 726 #define BMP_RLE8_ESCAPE         0
 727 #define BMP_RLE8_EOL            0
 728 #define BMP_RLE8_EOBMP          1
 729 #define BMP_RLE8_DELTA          2
 730
 731 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 732                                   int cnt)
 733 {
 734         while (cnt > 0) {
 735                 *(*fbp)++ = cmap[*bmap++];
 736                 cnt--;
 737         }
 738 }
 739
 740 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 741 {
 742         ushort *fb = *fbp;
 743         int cnt_8copy = cnt >> 3;
 744
 745         cnt -= cnt_8copy << 3;
 746         while (cnt_8copy > 0) {
 747                 *fb++ = c;
 748                 *fb++ = c;
 749                 *fb++ = c;
 750                 *fb++ = c;
 751                 *fb++ = c;
 752                 *fb++ = c;
 753                 *fb++ = c;
 754                 *fb++ = c;
 755                 cnt_8copy--;
 756         }
 757         while (cnt > 0) {
 758                 *fb++ = c;
 759                 cnt--;
 760         }
 761         *fbp = fb;
 762 }
 763
 764 /*
 765  * Do not call this function directly, must be called from lcd_display_bitmap.
 766  */
 767 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 768                                     int x_off, int y_off)
 769 {
 770         uchar *bmap;
 771         ulong width, height;
 772         ulong cnt, runlen;
 773         int x, y;
 774         int decode = 1;
 775
 776         width = le32_to_cpu(bmp->header.width);
 777         height = le32_to_cpu(bmp->header.height);
 778         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 779
 780         x = 0;
 781         y = height - 1;
 782
 783         while (decode) {
 784                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 785                         switch (bmap[1]) {
 786                         case BMP_RLE8_EOL:
 787                                 /* end of line */
 788                                 bmap += 2;
 789                                 x = 0;
 790                                 y--;
 791                                 /* 16bpix, 2-byte per pixel, width should *2 */
 792                                 fb -= (width * 2 + lcd_line_length);
 793                                 break;
 794                         case BMP_RLE8_EOBMP:
 795                                 /* end of bitmap */
 796                                 decode = 0;
 797                                 break;
 798                         case BMP_RLE8_DELTA:
 799                                 /* delta run */
 800                                 x += bmap[2];
 801                                 y -= bmap[3];
 802                                 /* 16bpix, 2-byte per pixel, x should *2 */
 803                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 804                                         * lcd_line_length + (x + x_off) * 2);
 805                                 bmap += 4;
 806                                 break;
 807                         default:
 808                                 /* unencoded run */
 809                                 runlen = bmap[1];
 810                                 bmap += 2;
 811                                 if (y < height) {
 812                                         if (x < width) {
 813                                                 if (x + runlen > width)
 814                                                         cnt = width - x;
 815                                                 else
 816                                                         cnt = runlen;
 817                                                 draw_unencoded_bitmap(
 818                                                         (ushort **)&fb,
 819                                                         bmap, cmap, cnt);
 820                                         }
 821                                         x += runlen;
 822                                 }
 823                                 bmap += runlen;
 824                                 if (runlen & 1)
 825                                         bmap++;
 826                         }
 827                 } else {
 828                         /* encoded run */
 829                         if (y < height) {
 830                                 runlen = bmap[0];
 831                                 if (x < width) {
 832                                         /* aggregate the same code */
 833                                         while (bmap[0] == 0xff &&
 834                                                bmap[2] != BMP_RLE8_ESCAPE &&
 835                                                bmap[1] == bmap[3]) {
 836                                                 runlen += bmap[2];
 837                                                 bmap += 2;
 838                                         }
 839                                         if (x + runlen > width)
 840                                                 cnt = width - x;
 841                                         else
 842                                                 cnt = runlen;
 843                                         draw_encoded_bitmap((ushort **)&fb,
 844                                                 cmap[bmap[1]], cnt);
 845                                 }
 846                                 x += runlen;
 847                         }
 848                         bmap += 2;
 849                 }
 850         }
 851 }
 852 #endif
 853
 854 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 855 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 856 #else
 857 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 858 #endif
 859
 860 #if defined(CONFIG_BMP_16BPP)
 861 #if defined(CONFIG_ATMEL_LCD_BGR555)
 862 static inline void fb_put_word(uchar **fb, uchar **from)
 863 {
 864         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 865         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 866         *from += 2;
 867 }
 868 #else
 869 static inline void fb_put_word(uchar **fb, uchar **from)
 870 {
 871         *(*fb)++ = *(*from)++;
 872         *(*fb)++ = *(*from)++;
 873 }
 874 #endif
 875 #endif /* CONFIG_BMP_16BPP */
 876
 877 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 878 {
 879 #if !defined(CONFIG_MCC200)
 880         ushort *cmap = NULL;
 881 #endif
 882         ushort *cmap_base = NULL;
 883         ushort i, j;
 884         uchar *fb;
 885         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 886         uchar *bmap;
 887         ushort padded_width;
 888         unsigned long width, height, byte_width;
 889         unsigned long pwidth = panel_info.vl_col;
 890         unsigned colors, bpix, bmp_bpix;
 891
 892         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 893                 bmp->header.signature[1] == 'M')) {
 894                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 895
 896                 return 1;
 897         }
 898
 899         width = le32_to_cpu(bmp->header.width);
 900         height = le32_to_cpu(bmp->header.height);
 901         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 902         colors = 1 << bmp_bpix;
 903
 904         bpix = NBITS(panel_info.vl_bpix);
 905
 906         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 907                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 908                         bpix, bmp_bpix);
 909
 910                 return 1;
 911         }
 912
 913         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 914         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 915                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 916                         bpix,
 917                         le16_to_cpu(bmp->header.bit_count));
 918
 919                 return 1;
 920         }
 921
 922         debug("Display-bmp: %d x %d  with %d colors\n",
 923                 (int)width, (int)height, (int)colors);
 924
 925 #if !defined(CONFIG_MCC200)
 926         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 927         if (bmp_bpix == 8) {
 928                 cmap = configuration_get_cmap();
 929                 cmap_base = cmap;
 930
 931                 /* Set color map */
 932                 for (i = 0; i < colors; ++i) {
 933                         bmp_color_table_entry_t cte = bmp->color_table[i];
 934 #if !defined(CONFIG_ATMEL_LCD)
 935                         ushort colreg =
 936                                 ( ((cte.red)   << 8) & 0xf800) |
 937                                 ( ((cte.green) << 3) & 0x07e0) |
 938                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 939 #ifdef CONFIG_SYS_INVERT_COLORS
 940                         *cmap = 0xffff - colreg;
 941 #else
 942                         *cmap = colreg;
 943 #endif
 944 #if defined(CONFIG_MPC823)
 945                         cmap--;
 946 #else
 947                         cmap++;
 948 #endif
 949 #else /* CONFIG_ATMEL_LCD */
 950                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 951 #endif
 952                 }
 953         }
 954 #endif
 955
 956         /*
 957          *  BMP format for Monochrome assumes that the state of a
 958          * pixel is described on a per Bit basis, not per Byte.
 959          *  So, in case of Monochrome BMP we should align widths
 960          * on a byte boundary and convert them from Bit to Byte
 961          * units.
 962          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 963          * their own ways, so make the converting to be MCC200
 964          * specific.
 965          */
 966 #if defined(CONFIG_MCC200)
 967         if (bpix == 1) {
 968                 width = ((width + 7) & ~7) >> 3;
 969                 x     = ((x + 7) & ~7) >> 3;
 970                 pwidth= ((pwidth + 7) & ~7) >> 3;
 971         }
 972 #endif
 973
 974         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 975
 976 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 977         splash_align_axis(&x, pwidth, width);
 978         splash_align_axis(&y, panel_info.vl_row, height);
 979 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 980
 981         if ((x + width) > pwidth)
 982                 width = pwidth - x;
 983         if ((y + height) > panel_info.vl_row)
 984                 height = panel_info.vl_row - y;
 985
 986         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
 987         fb   = (uchar *) (lcd_base +
 988                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 989
 990         switch (bmp_bpix) {
 991         case 1: /* pass through */
 992         case 8:
 993 #ifdef CONFIG_LCD_BMP_RLE8
 994                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 995                         if (bpix != 16) {
 996                                 /* TODO implement render code for bpix != 16 */
 997                                 printf("Error: only support 16 bpix");
 998                                 return 1;
 999                         }
1000                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1001                         break;
1002                 }
1003 #endif
1004
1005                 if (bpix != 16)
1006                         byte_width = width;
1007                 else
1008                         byte_width = width * 2;
1009
1010                 for (i = 0; i < height; ++i) {
1011                         WATCHDOG_RESET();
1012                         for (j = 0; j < width; j++) {
1013                                 if (bpix != 16) {
1014                                         FB_PUT_BYTE(fb, bmap);
1015                                 } else {
1016                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1017                                         fb += sizeof(uint16_t) / sizeof(*fb);
1018                                 }
1019                         }
1020                         bmap += (padded_width - width);
1021                         fb -= byte_width + lcd_line_length;
1022                 }
1023                 break;
1024
1025 #if defined(CONFIG_BMP_16BPP)
1026         case 16:
1027                 for (i = 0; i < height; ++i) {
1028                         WATCHDOG_RESET();
1029                         for (j = 0; j < width; j++)
1030                                 fb_put_word(&fb, &bmap);
1031
1032                         bmap += (padded_width - width) * 2;
1033                         fb -= width * 2 + lcd_line_length;
1034                 }
1035                 break;
1036 #endif /* CONFIG_BMP_16BPP */
1037
1038 #if defined(CONFIG_BMP_32BPP)
1039         case 32:
1040                 for (i = 0; i < height; ++i) {
1041                         for (j = 0; j < width; j++) {
1042                                 *(fb++) = *(bmap++);
1043                                 *(fb++) = *(bmap++);
1044                                 *(fb++) = *(bmap++);
1045                                 *(fb++) = *(bmap++);
1046                         }
1047                         fb -= lcd_line_length + width * (bpix / 8);
1048                 }
1049                 break;
1050 #endif /* CONFIG_BMP_32BPP */
1051         default:
1052                 break;
1053         };
1054
1055         lcd_sync();
1056         return 0;
1057 }
1058 #endif
1059
1060 static void *lcd_logo(void)
1061 {
1062 #ifdef CONFIG_SPLASH_SCREEN
1063         char *s;
1064         ulong addr;
1065         static int do_splash = 1;
1066
1067         if (do_splash && (s = getenv("splashimage")) != NULL) {
1068                 int x = 0, y = 0;
1069                 do_splash = 0;
1070
1071                 if (splash_screen_prepare())
1072                         return (void *)lcd_base;
1073
1074                 addr = simple_strtoul (s, NULL, 16);
1075
1076                 splash_get_pos(&x, &y);
1077
1078                 if (bmp_display(addr, x, y) == 0)
1079                         return (void *)lcd_base;
1080         }
1081 #endif /* CONFIG_SPLASH_SCREEN */
1082
1083         bitmap_plot(0, 0);
1084
1085 #ifdef CONFIG_LCD_INFO
1086         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1087         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1088         lcd_show_board_info();
1089 #endif /* CONFIG_LCD_INFO */
1090
1091 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1092         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1093 #else
1094         return (void *)lcd_base;
1095 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1096 }
1097
1098 #ifdef CONFIG_SPLASHIMAGE_GUARD
1099 static int on_splashimage(const char *name, const char *value, enum env_op op,
1100         int flags)
1101 {
1102         ulong addr;
1103         int aligned;
1104
1105         if (op == env_op_delete)
1106                 return 0;
1107
1108         addr = simple_strtoul(value, NULL, 16);
1109         /* See README.displaying-bmps */
1110         aligned = (addr % 4 == 2);
1111         if (!aligned) {
1112                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1113                 return -1;
1114         }
1115
1116         return 0;
1117 }
1118
1119 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1120 #endif
1121
1122 void lcd_position_cursor(unsigned col, unsigned row)
1123 {
1124         console_col = min(col, CONSOLE_COLS - 1);
1125         console_row = min(row, CONSOLE_ROWS - 1);
1126 }
1127
1128 int lcd_get_pixel_width(void)
1129 {
1130         return panel_info.vl_col;
1131 }
1132
1133 int lcd_get_pixel_height(void)
1134 {
1135         return panel_info.vl_row;
1136 }
1137
1138 int lcd_get_screen_rows(void)
1139 {
1140         return CONSOLE_ROWS;
1141 }
1142
1143 int lcd_get_screen_columns(void)
1144 {
1145         return CONSOLE_COLS;
1146 }
1147
1148 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1149 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1150 {
1151         u32 stride;
1152         fdt32_t cells[2];
1153         int ret;
1154         static const char format[] =
1155 #if LCD_BPP == LCD_COLOR16
1156                 "r5g6b5";
1157 #else
1158                 "";
1159 #endif
1160
1161         if (!format[0])
1162                 return -1;
1163
1164         stride = panel_info.vl_col * 2;
1165
1166         cells[0] = cpu_to_fdt32(gd->fb_base);
1167         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1168         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1169         if (ret < 0)
1170                 return -1;
1171
1172         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1173         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1174         if (ret < 0)
1175                 return -1;
1176
1177         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1178         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1179         if (ret < 0)
1180                 return -1;
1181
1182         cells[0] = cpu_to_fdt32(stride);
1183         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1184         if (ret < 0)
1185                 return -1;
1186
1187         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1188         if (ret < 0)
1189                 return -1;
1190
1191         ret = fdt_delprop(blob, off, "status");
1192         if (ret < 0)
1193                 return -1;
1194
1195         return 0;
1196 }
1197
1198 int lcd_dt_simplefb_add_node(void *blob)
1199 {
1200         static const char compat[] = "simple-framebuffer";
1201         static const char disabled[] = "disabled";
1202         int off, ret;
1203
1204         off = fdt_add_subnode(blob, 0, "framebuffer");
1205         if (off < 0)
1206                 return -1;
1207
1208         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1209         if (ret < 0)
1210                 return -1;
1211
1212         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1213         if (ret < 0)
1214                 return -1;
1215
1216         return lcd_dt_simplefb_configure_node(blob, off);
1217 }
1218
1219 int lcd_dt_simplefb_enable_existing_node(void *blob)
1220 {
1221         int off;
1222
1223         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1224         if (off < 0)
1225                 return -1;
1226
1227         return lcd_dt_simplefb_configure_node(blob, off);
1228 }
1229 #endif