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
  34 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  35         defined(CONFIG_CPU_MONAHANS)
  36 #define CONFIG_CPU_PXA
  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 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  85 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  86                                         / VIDEO_FONT_HEIGHT)
  87 #else
  88 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  89 #endif
  90
  91 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
  92 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  93 #define CONSOLE_ROW_FIRST       lcd_console_address
  94 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  95 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  96                                         - CONSOLE_ROW_SIZE)
  97 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
  98 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  99
 100 #if LCD_BPP == LCD_MONOCHROME
 101 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 102                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 103 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
 104 # define COLOR_MASK(c)          (c)
 105 #else
 106 # error Unsupported LCD BPP.
 107 #endif
 108
 109 DECLARE_GLOBAL_DATA_PTR;
 110
 111 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 112 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
 113 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 114
 115 static int lcd_init(void *lcdbase);
 116
 117 static void *lcd_logo(void);
 118
 119 static int lcd_getbgcolor(void);
 120 static void lcd_setfgcolor(int color);
 121 static void lcd_setbgcolor(int color);
 122
 123 static int lcd_color_fg;
 124 static int lcd_color_bg;
 125 int lcd_line_length;
 126
 127 char lcd_is_enabled = 0;
 128
 129 static short console_col;
 130 static short console_row;
 131
 132 static void *lcd_console_address;
 133 static void *lcd_base;                  /* Start of framebuffer memory  */
 134
 135 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 136
 137 /************************************************************************/
 138
 139 /* Flush LCD activity to the caches */
 140 void lcd_sync(void)
 141 {
 142         /*
 143          * flush_dcache_range() is declared in common.h but it seems that some
 144          * architectures do not actually implement it. Is there a way to find
 145          * out whether it exists? For now, ARM is safe.
 146          */
 147 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 148         int line_length;
 149
 150         if (lcd_flush_dcache)
 151                 flush_dcache_range((u32)lcd_base,
 152                         (u32)(lcd_base + lcd_get_size(&line_length)));
 153 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 154         static ulong last_sync;
 155
 156         if (get_timer(last_sync) > 10) {
 157                 sandbox_sdl_sync(lcd_base);
 158                 last_sync = get_timer(0);
 159         }
 160 #endif
 161 }
 162
 163 void lcd_set_flush_dcache(int flush)
 164 {
 165         lcd_flush_dcache = (flush != 0);
 166 }
 167
 168 /*----------------------------------------------------------------------*/
 169
 170 static void console_scrollup(void)
 171 {
 172         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 173
 174         /* Copy up rows ignoring those that will be overwritten */
 175         memcpy(CONSOLE_ROW_FIRST,
 176                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 177                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 178
 179         /* Clear the last rows */
 180         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 181                 COLOR_MASK(lcd_color_bg),
 182                 CONSOLE_ROW_SIZE * rows);
 183
 184         lcd_sync();
 185         console_row -= rows;
 186 }
 187
 188 /*----------------------------------------------------------------------*/
 189
 190 static inline void console_back(void)
 191 {
 192         if (--console_col < 0) {
 193                 console_col = CONSOLE_COLS-1 ;
 194                 if (--console_row < 0)
 195                         console_row = 0;
 196         }
 197
 198         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 199                 console_row * VIDEO_FONT_HEIGHT, ' ');
 200 }
 201
 202 /*----------------------------------------------------------------------*/
 203
 204 static inline void console_newline(void)
 205 {
 206         console_col = 0;
 207
 208         /* Check if we need to scroll the terminal */
 209         if (++console_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_col = 0;
 233
 234                 return;
 235         case '\n':
 236                 console_newline();
 237
 238                 return;
 239         case '\t':      /* Tab (8 chars alignment) */
 240                 console_col +=  8;
 241                 console_col &= ~7;
 242
 243                 if (console_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_col * VIDEO_FONT_WIDTH,
 253                         console_row * VIDEO_FONT_HEIGHT, c);
 254                 if (++console_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 #if LCD_BPP == LCD_MONOCHROME
 308         ushort off  = x * (1 << LCD_BPP) % 8;
 309 #endif
 310
 311         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 312
 313         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 314                 uchar *s = str;
 315                 int i;
 316 #if LCD_BPP == LCD_COLOR16
 317                 ushort *d = (ushort *)dest;
 318 #else
 319                 uchar *d = dest;
 320 #endif
 321
 322 #if LCD_BPP == LCD_MONOCHROME
 323                 uchar rest = *d & -(1 << (8 - off));
 324                 uchar sym;
 325 #endif
 326                 for (i = 0; i < count; ++i) {
 327                         uchar c, bits;
 328
 329                         c = *s++;
 330                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 331
 332 #if LCD_BPP == LCD_MONOCHROME
 333                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 334                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 335
 336                         *d++ = rest | (sym >> off);
 337                         rest = sym << (8-off);
 338 #elif LCD_BPP == LCD_COLOR8
 339                         for (c = 0; c < 8; ++c) {
 340                                 *d++ = (bits & 0x80) ?
 341                                                 lcd_color_fg : lcd_color_bg;
 342                                 bits <<= 1;
 343                         }
 344 #elif LCD_BPP == LCD_COLOR16
 345                         for (c = 0; c < 8; ++c) {
 346                                 *d++ = (bits & 0x80) ?
 347                                                 lcd_color_fg : lcd_color_bg;
 348                                 bits <<= 1;
 349                         }
 350 #endif
 351                 }
 352 #if LCD_BPP == LCD_MONOCHROME
 353                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 354 #endif
 355         }
 356 }
 357
 358 /*----------------------------------------------------------------------*/
 359
 360 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 361 {
 362         lcd_drawchars(x, y, s, strlen((char *)s));
 363 }
 364
 365 /*----------------------------------------------------------------------*/
 366
 367 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 368 {
 369         lcd_drawchars(x, y, &c, 1);
 370 }
 371
 372 /************************************************************************/
 373 /**  Small utility to check that you got the colours right              */
 374 /************************************************************************/
 375 #ifdef LCD_TEST_PATTERN
 376
 377 #define N_BLK_VERT      2
 378 #define N_BLK_HOR       3
 379
 380 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 381         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 382         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 383 };
 384
 385 static void test_pattern(void)
 386 {
 387         ushort v_max  = panel_info.vl_row;
 388         ushort h_max  = panel_info.vl_col;
 389         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 390         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 391         ushort v, h;
 392         uchar *pix = (uchar *)lcd_base;
 393
 394         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 395                 h_max, v_max, h_step, v_step);
 396
 397         /* WARNING: Code silently assumes 8bit/pixel */
 398         for (v = 0; v < v_max; ++v) {
 399                 uchar iy = v / v_step;
 400                 for (h = 0; h < h_max; ++h) {
 401                         uchar ix = N_BLK_HOR * iy + h / h_step;
 402                         *pix++ = test_colors[ix];
 403                 }
 404         }
 405 }
 406 #endif /* LCD_TEST_PATTERN */
 407
 408
 409 /************************************************************************/
 410 /* ** GENERIC Initialization Routines                                   */
 411 /************************************************************************/
 412 /*
 413  * With most lcd drivers the line length is set up
 414  * by calculating it from panel_info parameters. Some
 415  * drivers need to calculate the line length differently,
 416  * so make the function weak to allow overriding it.
 417  */
 418 __weak int lcd_get_size(int *line_length)
 419 {
 420         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 421         return *line_length * panel_info.vl_row;
 422 }
 423
 424 int drv_lcd_init(void)
 425 {
 426         struct stdio_dev lcddev;
 427         int rc;
 428
 429         lcd_base = map_sysmem(gd->fb_base, 0);
 430
 431         lcd_init(lcd_base);             /* LCD initialization */
 432
 433         /* Device initialization */
 434         memset(&lcddev, 0, sizeof(lcddev));
 435
 436         strcpy(lcddev.name, "lcd");
 437         lcddev.ext   = 0;                       /* No extensions */
 438         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 439         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 440         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 441
 442         rc = stdio_register(&lcddev);
 443
 444         return (rc == 0) ? 1 : rc;
 445 }
 446
 447 /*----------------------------------------------------------------------*/
 448 void lcd_clear(void)
 449 {
 450 #if LCD_BPP == LCD_MONOCHROME
 451         /* Setting the palette */
 452         lcd_initcolregs();
 453
 454 #elif LCD_BPP == LCD_COLOR8
 455         /* Setting the palette */
 456         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 457         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 458         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 459         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 460         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 461         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 462         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 463         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 464         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 465 #endif
 466
 467 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 468         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 469         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 470 #else
 471         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 472         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 473 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 474
 475 #ifdef  LCD_TEST_PATTERN
 476         test_pattern();
 477 #else
 478         /* set framebuffer to background color */
 479         memset((char *)lcd_base,
 480                 COLOR_MASK(lcd_getbgcolor()),
 481                 lcd_line_length * panel_info.vl_row);
 482 #endif
 483         /* Paint the logo and retrieve LCD base address */
 484         debug("[LCD] Drawing the logo...\n");
 485         lcd_console_address = lcd_logo();
 486
 487         console_col = 0;
 488         console_row = 0;
 489         lcd_sync();
 490 }
 491
 492 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 493                         char *const argv[])
 494 {
 495         lcd_clear();
 496         return 0;
 497 }
 498
 499 U_BOOT_CMD(
 500         cls,    1,      1,      do_lcd_clear,
 501         "clear screen",
 502         ""
 503 );
 504
 505 /*----------------------------------------------------------------------*/
 506
 507 static int lcd_init(void *lcdbase)
 508 {
 509         /* Initialize the lcd controller */
 510         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 511
 512         lcd_ctrl_init(lcdbase);
 513
 514         /*
 515          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 516          * the 'lcdbase' argument and uses custom lcd base address
 517          * by setting up gd->fb_base. Check for this condition and fixup
 518          * 'lcd_base' address.
 519          */
 520         if (map_to_sysmem(lcdbase) != gd->fb_base)
 521                 lcd_base = map_sysmem(gd->fb_base, 0);
 522
 523         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 524
 525         lcd_get_size(&lcd_line_length);
 526         lcd_is_enabled = 1;
 527         lcd_clear();
 528         lcd_enable();
 529
 530         /* Initialize the console */
 531         console_col = 0;
 532 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 533         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 534 #else
 535         console_row = 1;        /* leave 1 blank line below logo */
 536 #endif
 537
 538         return 0;
 539 }
 540
 541
 542 /************************************************************************/
 543 /* ** ROM capable initialization part - needed to reserve FB memory     */
 544 /************************************************************************/
 545 /*
 546  * This is called early in the system initialization to grab memory
 547  * for the LCD controller.
 548  * Returns new address for monitor, after reserving LCD buffer memory
 549  *
 550  * Note that this is running from ROM, so no write access to global data.
 551  */
 552 ulong lcd_setmem(ulong addr)
 553 {
 554         ulong size;
 555         int line_length;
 556
 557         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 558                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 559
 560         size = lcd_get_size(&line_length);
 561
 562         /* Round up to nearest full page, or MMU section if defined */
 563         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 564         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 565
 566         /* Allocate pages for the frame buffer. */
 567         addr -= size;
 568
 569         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 570               size >> 10, addr);
 571
 572         return addr;
 573 }
 574
 575 /*----------------------------------------------------------------------*/
 576
 577 static void lcd_setfgcolor(int color)
 578 {
 579         lcd_color_fg = color;
 580 }
 581
 582 /*----------------------------------------------------------------------*/
 583
 584 static void lcd_setbgcolor(int color)
 585 {
 586         lcd_color_bg = color;
 587 }
 588
 589 /*----------------------------------------------------------------------*/
 590
 591 int lcd_getfgcolor(void)
 592 {
 593         return lcd_color_fg;
 594 }
 595
 596 /*----------------------------------------------------------------------*/
 597
 598 static int lcd_getbgcolor(void)
 599 {
 600         return lcd_color_bg;
 601 }
 602
 603 /************************************************************************/
 604 /* ** Chipset depending Bitmap / Logo stuff...                          */
 605 /************************************************************************/
 606 static inline ushort *configuration_get_cmap(void)
 607 {
 608 #if defined CONFIG_CPU_PXA
 609         struct pxafb_info *fbi = &panel_info.pxa;
 610         return (ushort *)fbi->palette;
 611 #elif defined(CONFIG_MPC823)
 612         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 613         cpm8xx_t *cp = &(immr->im_cpm);
 614         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 615 #elif defined(CONFIG_ATMEL_LCD)
 616         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 617 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 618         return panel_info.cmap;
 619 #elif defined(CONFIG_LCD_LOGO)
 620         return bmp_logo_palette;
 621 #else
 622         return NULL;
 623 #endif
 624 }
 625
 626 #ifdef CONFIG_LCD_LOGO
 627 void bitmap_plot(int x, int y)
 628 {
 629 #ifdef CONFIG_ATMEL_LCD
 630         uint *cmap = (uint *)bmp_logo_palette;
 631 #else
 632         ushort *cmap = (ushort *)bmp_logo_palette;
 633 #endif
 634         ushort i, j;
 635         uchar *bmap;
 636         uchar *fb;
 637         ushort *fb16;
 638 #if defined(CONFIG_MPC823)
 639         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 640         cpm8xx_t *cp = &(immr->im_cpm);
 641 #endif
 642         unsigned bpix = NBITS(panel_info.vl_bpix);
 643
 644         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 645                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 646                 ARRAY_SIZE(bmp_logo_palette));
 647
 648         bmap = &bmp_logo_bitmap[0];
 649         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 650
 651         if (bpix < 12) {
 652                 /* Leave room for default color map
 653                  * default case: generic system with no cmap (most likely 16bpp)
 654                  * cmap was set to the source palette, so no change is done.
 655                  * This avoids even more ifdefs in the next stanza
 656                  */
 657 #if defined(CONFIG_MPC823)
 658                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 659 #elif defined(CONFIG_ATMEL_LCD)
 660                 cmap = (uint *)configuration_get_cmap();
 661 #else
 662                 cmap = configuration_get_cmap();
 663 #endif
 664
 665                 WATCHDOG_RESET();
 666
 667                 /* Set color map */
 668                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 669                         ushort colreg = bmp_logo_palette[i];
 670 #ifdef CONFIG_ATMEL_LCD
 671                         uint lut_entry;
 672 #ifdef CONFIG_ATMEL_LCD_BGR555
 673                         lut_entry = ((colreg & 0x000F) << 11) |
 674                                         ((colreg & 0x00F0) <<  2) |
 675                                         ((colreg & 0x0F00) >>  7);
 676 #else /* CONFIG_ATMEL_LCD_RGB565 */
 677                         lut_entry = ((colreg & 0x000F) << 1) |
 678                                         ((colreg & 0x00F0) << 3) |
 679                                         ((colreg & 0x0F00) << 4);
 680 #endif
 681                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 682                         cmap++;
 683 #else /* !CONFIG_ATMEL_LCD */
 684 #ifdef  CONFIG_SYS_INVERT_COLORS
 685                         *cmap++ = 0xffff - colreg;
 686 #else
 687                         *cmap++ = colreg;
 688 #endif
 689 #endif /* CONFIG_ATMEL_LCD */
 690                 }
 691
 692                 WATCHDOG_RESET();
 693
 694                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 695                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 696                         bmap += BMP_LOGO_WIDTH;
 697                         fb += panel_info.vl_col;
 698                 }
 699         }
 700         else { /* true color mode */
 701                 u16 col16;
 702                 fb16 = (ushort *)fb;
 703                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 704                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 705                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 706                                 fb16[j] =
 707                                         ((col16 & 0x000F) << 1) |
 708                                         ((col16 & 0x00F0) << 3) |
 709                                         ((col16 & 0x0F00) << 4);
 710                                 }
 711                         bmap += BMP_LOGO_WIDTH;
 712                         fb16 += panel_info.vl_col;
 713                 }
 714         }
 715
 716         WATCHDOG_RESET();
 717         lcd_sync();
 718 }
 719 #else
 720 static inline void bitmap_plot(int x, int y) {}
 721 #endif /* CONFIG_LCD_LOGO */
 722
 723 /*----------------------------------------------------------------------*/
 724 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 725 /*
 726  * Display the BMP file located at address bmp_image.
 727  * Only uncompressed.
 728  */
 729
 730 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 731 #define BMP_ALIGN_CENTER        0x7FFF
 732
 733 static void splash_align_axis(int *axis, unsigned long panel_size,
 734                                         unsigned long picture_size)
 735 {
 736         unsigned long panel_picture_delta = panel_size - picture_size;
 737         unsigned long axis_alignment;
 738
 739         if (*axis == BMP_ALIGN_CENTER)
 740                 axis_alignment = panel_picture_delta / 2;
 741         else if (*axis < 0)
 742                 axis_alignment = panel_picture_delta + *axis + 1;
 743         else
 744                 return;
 745
 746         *axis = max(0, axis_alignment);
 747 }
 748 #endif
 749
 750
 751 #ifdef CONFIG_LCD_BMP_RLE8
 752
 753 #define BMP_RLE8_ESCAPE         0
 754 #define BMP_RLE8_EOL            0
 755 #define BMP_RLE8_EOBMP          1
 756 #define BMP_RLE8_DELTA          2
 757
 758 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 759                                   int cnt)
 760 {
 761         while (cnt > 0) {
 762                 *(*fbp)++ = cmap[*bmap++];
 763                 cnt--;
 764         }
 765 }
 766
 767 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 768 {
 769         ushort *fb = *fbp;
 770         int cnt_8copy = cnt >> 3;
 771
 772         cnt -= cnt_8copy << 3;
 773         while (cnt_8copy > 0) {
 774                 *fb++ = c;
 775                 *fb++ = c;
 776                 *fb++ = c;
 777                 *fb++ = c;
 778                 *fb++ = c;
 779                 *fb++ = c;
 780                 *fb++ = c;
 781                 *fb++ = c;
 782                 cnt_8copy--;
 783         }
 784         while (cnt > 0) {
 785                 *fb++ = c;
 786                 cnt--;
 787         }
 788         *fbp = fb;
 789 }
 790
 791 /*
 792  * Do not call this function directly, must be called from lcd_display_bitmap.
 793  */
 794 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 795                                     int x_off, int y_off)
 796 {
 797         uchar *bmap;
 798         ulong width, height;
 799         ulong cnt, runlen;
 800         int x, y;
 801         int decode = 1;
 802
 803         width = get_unaligned_le32(&bmp->header.width);
 804         height = get_unaligned_le32(&bmp->header.height);
 805         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 806
 807         x = 0;
 808         y = height - 1;
 809
 810         while (decode) {
 811                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 812                         switch (bmap[1]) {
 813                         case BMP_RLE8_EOL:
 814                                 /* end of line */
 815                                 bmap += 2;
 816                                 x = 0;
 817                                 y--;
 818                                 /* 16bpix, 2-byte per pixel, width should *2 */
 819                                 fb -= (width * 2 + lcd_line_length);
 820                                 break;
 821                         case BMP_RLE8_EOBMP:
 822                                 /* end of bitmap */
 823                                 decode = 0;
 824                                 break;
 825                         case BMP_RLE8_DELTA:
 826                                 /* delta run */
 827                                 x += bmap[2];
 828                                 y -= bmap[3];
 829                                 /* 16bpix, 2-byte per pixel, x should *2 */
 830                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 831                                         * lcd_line_length + (x + x_off) * 2);
 832                                 bmap += 4;
 833                                 break;
 834                         default:
 835                                 /* unencoded run */
 836                                 runlen = bmap[1];
 837                                 bmap += 2;
 838                                 if (y < height) {
 839                                         if (x < width) {
 840                                                 if (x + runlen > width)
 841                                                         cnt = width - x;
 842                                                 else
 843                                                         cnt = runlen;
 844                                                 draw_unencoded_bitmap(
 845                                                         (ushort **)&fb,
 846                                                         bmap, cmap, cnt);
 847                                         }
 848                                         x += runlen;
 849                                 }
 850                                 bmap += runlen;
 851                                 if (runlen & 1)
 852                                         bmap++;
 853                         }
 854                 } else {
 855                         /* encoded run */
 856                         if (y < height) {
 857                                 runlen = bmap[0];
 858                                 if (x < width) {
 859                                         /* aggregate the same code */
 860                                         while (bmap[0] == 0xff &&
 861                                                bmap[2] != BMP_RLE8_ESCAPE &&
 862                                                bmap[1] == bmap[3]) {
 863                                                 runlen += bmap[2];
 864                                                 bmap += 2;
 865                                         }
 866                                         if (x + runlen > width)
 867                                                 cnt = width - x;
 868                                         else
 869                                                 cnt = runlen;
 870                                         draw_encoded_bitmap((ushort **)&fb,
 871                                                 cmap[bmap[1]], cnt);
 872                                 }
 873                                 x += runlen;
 874                         }
 875                         bmap += 2;
 876                 }
 877         }
 878 }
 879 #endif
 880
 881 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 882 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 883 #else
 884 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 885 #endif
 886
 887 #if defined(CONFIG_BMP_16BPP)
 888 #if defined(CONFIG_ATMEL_LCD_BGR555)
 889 static inline void fb_put_word(uchar **fb, uchar **from)
 890 {
 891         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 892         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 893         *from += 2;
 894 }
 895 #else
 896 static inline void fb_put_word(uchar **fb, uchar **from)
 897 {
 898         *(*fb)++ = *(*from)++;
 899         *(*fb)++ = *(*from)++;
 900 }
 901 #endif
 902 #endif /* CONFIG_BMP_16BPP */
 903
 904 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 905 {
 906 #if !defined(CONFIG_MCC200)
 907         ushort *cmap = NULL;
 908 #endif
 909         ushort *cmap_base = NULL;
 910         ushort i, j;
 911         uchar *fb;
 912         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 913         uchar *bmap;
 914         ushort padded_width;
 915         unsigned long width, height, byte_width;
 916         unsigned long pwidth = panel_info.vl_col;
 917         unsigned colors, bpix, bmp_bpix;
 918
 919         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 920                 bmp->header.signature[1] == 'M')) {
 921                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 922
 923                 return 1;
 924         }
 925
 926         width = get_unaligned_le32(&bmp->header.width);
 927         height = get_unaligned_le32(&bmp->header.height);
 928         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 929
 930         colors = 1 << bmp_bpix;
 931
 932         bpix = NBITS(panel_info.vl_bpix);
 933
 934         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 935                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 936                         bpix, bmp_bpix);
 937
 938                 return 1;
 939         }
 940
 941         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 942         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 943                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 944                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 945                 return 1;
 946         }
 947
 948         debug("Display-bmp: %d x %d  with %d colors\n",
 949                 (int)width, (int)height, (int)colors);
 950
 951 #if !defined(CONFIG_MCC200)
 952         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 953         if (bmp_bpix == 8) {
 954                 cmap = configuration_get_cmap();
 955                 cmap_base = cmap;
 956
 957                 /* Set color map */
 958                 for (i = 0; i < colors; ++i) {
 959                         bmp_color_table_entry_t cte = bmp->color_table[i];
 960 #if !defined(CONFIG_ATMEL_LCD)
 961                         ushort colreg =
 962                                 ( ((cte.red)   << 8) & 0xf800) |
 963                                 ( ((cte.green) << 3) & 0x07e0) |
 964                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 965 #ifdef CONFIG_SYS_INVERT_COLORS
 966                         *cmap = 0xffff - colreg;
 967 #else
 968                         *cmap = colreg;
 969 #endif
 970 #if defined(CONFIG_MPC823)
 971                         cmap--;
 972 #else
 973                         cmap++;
 974 #endif
 975 #else /* CONFIG_ATMEL_LCD */
 976                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 977 #endif
 978                 }
 979         }
 980 #endif
 981         /*
 982          *  BMP format for Monochrome assumes that the state of a
 983          * pixel is described on a per Bit basis, not per Byte.
 984          *  So, in case of Monochrome BMP we should align widths
 985          * on a byte boundary and convert them from Bit to Byte
 986          * units.
 987          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 988          * their own ways, so make the converting to be MCC200
 989          * specific.
 990          */
 991 #if defined(CONFIG_MCC200)
 992         if (bpix == 1) {
 993                 width = ((width + 7) & ~7) >> 3;
 994                 x     = ((x + 7) & ~7) >> 3;
 995                 pwidth= ((pwidth + 7) & ~7) >> 3;
 996         }
 997 #endif
 998
 999         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
1000
1001 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1002         splash_align_axis(&x, pwidth, width);
1003         splash_align_axis(&y, panel_info.vl_row, height);
1004 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1005
1006         if ((x + width) > pwidth)
1007                 width = pwidth - x;
1008         if ((y + height) > panel_info.vl_row)
1009                 height = panel_info.vl_row - y;
1010
1011         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
1012         fb   = (uchar *)(lcd_base +
1013                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1014
1015         switch (bmp_bpix) {
1016         case 1: /* pass through */
1017         case 8:
1018 #ifdef CONFIG_LCD_BMP_RLE8
1019                 u32 compression = get_unaligned_le32(&bmp->header.compression);
1020                 if (compression == BMP_BI_RLE8) {
1021                         if (bpix != 16) {
1022                                 /* TODO implement render code for bpix != 16 */
1023                                 printf("Error: only support 16 bpix");
1024                                 return 1;
1025                         }
1026                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1027                         break;
1028                 }
1029 #endif
1030
1031                 if (bpix != 16)
1032                         byte_width = width;
1033                 else
1034                         byte_width = width * 2;
1035
1036                 for (i = 0; i < height; ++i) {
1037                         WATCHDOG_RESET();
1038                         for (j = 0; j < width; j++) {
1039                                 if (bpix != 16) {
1040                                         FB_PUT_BYTE(fb, bmap);
1041                                 } else {
1042                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1043                                         fb += sizeof(uint16_t) / sizeof(*fb);
1044                                 }
1045                         }
1046                         bmap += (padded_width - width);
1047                         fb -= byte_width + lcd_line_length;
1048                 }
1049                 break;
1050
1051 #if defined(CONFIG_BMP_16BPP)
1052         case 16:
1053                 for (i = 0; i < height; ++i) {
1054                         WATCHDOG_RESET();
1055                         for (j = 0; j < width; j++)
1056                                 fb_put_word(&fb, &bmap);
1057
1058                         bmap += (padded_width - width) * 2;
1059                         fb -= width * 2 + lcd_line_length;
1060                 }
1061                 break;
1062 #endif /* CONFIG_BMP_16BPP */
1063
1064 #if defined(CONFIG_BMP_32BPP)
1065         case 32:
1066                 for (i = 0; i < height; ++i) {
1067                         for (j = 0; j < width; j++) {
1068                                 *(fb++) = *(bmap++);
1069                                 *(fb++) = *(bmap++);
1070                                 *(fb++) = *(bmap++);
1071                                 *(fb++) = *(bmap++);
1072                         }
1073                         fb -= lcd_line_length + width * (bpix / 8);
1074                 }
1075                 break;
1076 #endif /* CONFIG_BMP_32BPP */
1077         default:
1078                 break;
1079         };
1080
1081         lcd_sync();
1082         return 0;
1083 }
1084 #endif
1085
1086 static void *lcd_logo(void)
1087 {
1088 #ifdef CONFIG_SPLASH_SCREEN
1089         char *s;
1090         ulong addr;
1091         static int do_splash = 1;
1092
1093         if (do_splash && (s = getenv("splashimage")) != NULL) {
1094                 int x = 0, y = 0;
1095                 do_splash = 0;
1096
1097                 if (splash_screen_prepare())
1098                         return (void *)lcd_base;
1099
1100                 addr = simple_strtoul (s, NULL, 16);
1101
1102                 splash_get_pos(&x, &y);
1103
1104                 if (bmp_display(addr, x, y) == 0)
1105                         return (void *)lcd_base;
1106         }
1107 #endif /* CONFIG_SPLASH_SCREEN */
1108
1109         bitmap_plot(0, 0);
1110
1111 #ifdef CONFIG_LCD_INFO
1112         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1113         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1114         lcd_show_board_info();
1115 #endif /* CONFIG_LCD_INFO */
1116
1117 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1118         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1119 #else
1120         return (void *)lcd_base;
1121 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1122 }
1123
1124 #ifdef CONFIG_SPLASHIMAGE_GUARD
1125 static int on_splashimage(const char *name, const char *value, enum env_op op,
1126         int flags)
1127 {
1128         ulong addr;
1129         int aligned;
1130
1131         if (op == env_op_delete)
1132                 return 0;
1133
1134         addr = simple_strtoul(value, NULL, 16);
1135         /* See README.displaying-bmps */
1136         aligned = (addr % 4 == 2);
1137         if (!aligned) {
1138                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1139                 return -1;
1140         }
1141
1142         return 0;
1143 }
1144
1145 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1146 #endif
1147
1148 void lcd_position_cursor(unsigned col, unsigned row)
1149 {
1150         console_col = min(col, CONSOLE_COLS - 1);
1151         console_row = min(row, CONSOLE_ROWS - 1);
1152 }
1153
1154 int lcd_get_pixel_width(void)
1155 {
1156         return panel_info.vl_col;
1157 }
1158
1159 int lcd_get_pixel_height(void)
1160 {
1161         return panel_info.vl_row;
1162 }
1163
1164 int lcd_get_screen_rows(void)
1165 {
1166         return CONSOLE_ROWS;
1167 }
1168
1169 int lcd_get_screen_columns(void)
1170 {
1171         return CONSOLE_COLS;
1172 }
1173
1174 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1175 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1176 {
1177         u32 stride;
1178         fdt32_t cells[2];
1179         int ret;
1180         static const char format[] =
1181 #if LCD_BPP == LCD_COLOR16
1182                 "r5g6b5";
1183 #else
1184                 "";
1185 #endif
1186
1187         if (!format[0])
1188                 return -1;
1189
1190         stride = panel_info.vl_col * 2;
1191
1192         cells[0] = cpu_to_fdt32(gd->fb_base);
1193         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1194         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1195         if (ret < 0)
1196                 return -1;
1197
1198         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1199         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1200         if (ret < 0)
1201                 return -1;
1202
1203         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1204         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1205         if (ret < 0)
1206                 return -1;
1207
1208         cells[0] = cpu_to_fdt32(stride);
1209         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1210         if (ret < 0)
1211                 return -1;
1212
1213         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1214         if (ret < 0)
1215                 return -1;
1216
1217         ret = fdt_delprop(blob, off, "status");
1218         if (ret < 0)
1219                 return -1;
1220
1221         return 0;
1222 }
1223
1224 int lcd_dt_simplefb_add_node(void *blob)
1225 {
1226         static const char compat[] = "simple-framebuffer";
1227         static const char disabled[] = "disabled";
1228         int off, ret;
1229
1230         off = fdt_add_subnode(blob, 0, "framebuffer");
1231         if (off < 0)
1232                 return -1;
1233
1234         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1235         if (ret < 0)
1236                 return -1;
1237
1238         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1239         if (ret < 0)
1240                 return -1;
1241
1242         return lcd_dt_simplefb_configure_node(blob, off);
1243 }
1244
1245 int lcd_dt_simplefb_enable_existing_node(void *blob)
1246 {
1247         int off;
1248
1249         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1250         if (off < 0)
1251                 return -1;
1252
1253         return lcd_dt_simplefb_configure_node(blob, off);
1254 }
1255 #endif