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 void lcd_putc(const char c)
 218 {
 219         if (!lcd_is_enabled) {
 220                 serial_putc(c);
 221
 222                 return;
 223         }
 224
 225         switch (c) {
 226         case '\r':
 227                 console_col = 0;
 228
 229                 return;
 230         case '\n':
 231                 console_newline();
 232
 233                 return;
 234         case '\t':      /* Tab (8 chars alignment) */
 235                 console_col +=  8;
 236                 console_col &= ~7;
 237
 238                 if (console_col >= CONSOLE_COLS)
 239                         console_newline();
 240
 241                 return;
 242         case '\b':
 243                 console_back();
 244
 245                 return;
 246         default:
 247                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 248                         console_row * VIDEO_FONT_HEIGHT, c);
 249                 if (++console_col >= CONSOLE_COLS)
 250                         console_newline();
 251         }
 252 }
 253
 254 /*----------------------------------------------------------------------*/
 255
 256 void lcd_puts(const char *s)
 257 {
 258         if (!lcd_is_enabled) {
 259                 serial_puts(s);
 260
 261                 return;
 262         }
 263
 264         while (*s)
 265                 lcd_putc(*s++);
 266
 267         lcd_sync();
 268 }
 269
 270 /*----------------------------------------------------------------------*/
 271
 272 void lcd_printf(const char *fmt, ...)
 273 {
 274         va_list args;
 275         char buf[CONFIG_SYS_PBSIZE];
 276
 277         va_start(args, fmt);
 278         vsprintf(buf, fmt, args);
 279         va_end(args);
 280
 281         lcd_puts(buf);
 282 }
 283
 284 /************************************************************************/
 285 /* ** Low-Level Graphics Routines                                       */
 286 /************************************************************************/
 287
 288 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 289 {
 290         uchar *dest;
 291         ushort row;
 292
 293 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 294         y += BMP_LOGO_HEIGHT;
 295 #endif
 296
 297 #if LCD_BPP == LCD_MONOCHROME
 298         ushort off  = x * (1 << LCD_BPP) % 8;
 299 #endif
 300
 301         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 302
 303         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 304                 uchar *s = str;
 305                 int i;
 306 #if LCD_BPP == LCD_COLOR16
 307                 ushort *d = (ushort *)dest;
 308 #else
 309                 uchar *d = dest;
 310 #endif
 311
 312 #if LCD_BPP == LCD_MONOCHROME
 313                 uchar rest = *d & -(1 << (8 - off));
 314                 uchar sym;
 315 #endif
 316                 for (i = 0; i < count; ++i) {
 317                         uchar c, bits;
 318
 319                         c = *s++;
 320                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 321
 322 #if LCD_BPP == LCD_MONOCHROME
 323                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 324                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 325
 326                         *d++ = rest | (sym >> off);
 327                         rest = sym << (8-off);
 328 #elif LCD_BPP == LCD_COLOR8
 329                         for (c = 0; c < 8; ++c) {
 330                                 *d++ = (bits & 0x80) ?
 331                                                 lcd_color_fg : lcd_color_bg;
 332                                 bits <<= 1;
 333                         }
 334 #elif LCD_BPP == LCD_COLOR16
 335                         for (c = 0; c < 8; ++c) {
 336                                 *d++ = (bits & 0x80) ?
 337                                                 lcd_color_fg : lcd_color_bg;
 338                                 bits <<= 1;
 339                         }
 340 #endif
 341                 }
 342 #if LCD_BPP == LCD_MONOCHROME
 343                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 344 #endif
 345         }
 346 }
 347
 348 /*----------------------------------------------------------------------*/
 349
 350 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 351 {
 352         lcd_drawchars(x, y, s, strlen((char *)s));
 353 }
 354
 355 /*----------------------------------------------------------------------*/
 356
 357 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 358 {
 359         lcd_drawchars(x, y, &c, 1);
 360 }
 361
 362 /************************************************************************/
 363 /**  Small utility to check that you got the colours right              */
 364 /************************************************************************/
 365 #ifdef LCD_TEST_PATTERN
 366
 367 #define N_BLK_VERT      2
 368 #define N_BLK_HOR       3
 369
 370 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 371         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 372         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 373 };
 374
 375 static void test_pattern(void)
 376 {
 377         ushort v_max  = panel_info.vl_row;
 378         ushort h_max  = panel_info.vl_col;
 379         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 380         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 381         ushort v, h;
 382         uchar *pix = (uchar *)lcd_base;
 383
 384         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 385                 h_max, v_max, h_step, v_step);
 386
 387         /* WARNING: Code silently assumes 8bit/pixel */
 388         for (v = 0; v < v_max; ++v) {
 389                 uchar iy = v / v_step;
 390                 for (h = 0; h < h_max; ++h) {
 391                         uchar ix = N_BLK_HOR * iy + h / h_step;
 392                         *pix++ = test_colors[ix];
 393                 }
 394         }
 395 }
 396 #endif /* LCD_TEST_PATTERN */
 397
 398
 399 /************************************************************************/
 400 /* ** GENERIC Initialization Routines                                   */
 401 /************************************************************************/
 402 /*
 403  * With most lcd drivers the line length is set up
 404  * by calculating it from panel_info parameters. Some
 405  * drivers need to calculate the line length differently,
 406  * so make the function weak to allow overriding it.
 407  */
 408 __weak int lcd_get_size(int *line_length)
 409 {
 410         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 411         return *line_length * panel_info.vl_row;
 412 }
 413
 414 int drv_lcd_init(void)
 415 {
 416         struct stdio_dev lcddev;
 417         int rc;
 418
 419         lcd_base = map_sysmem(gd->fb_base, 0);
 420
 421         lcd_init(lcd_base);             /* LCD initialization */
 422
 423         /* Device initialization */
 424         memset(&lcddev, 0, sizeof(lcddev));
 425
 426         strcpy(lcddev.name, "lcd");
 427         lcddev.ext   = 0;                       /* No extensions */
 428         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 429         lcddev.putc  = lcd_putc;                /* 'putc' function */
 430         lcddev.puts  = lcd_puts;                /* 'puts' function */
 431
 432         rc = stdio_register(&lcddev);
 433
 434         return (rc == 0) ? 1 : rc;
 435 }
 436
 437 /*----------------------------------------------------------------------*/
 438 void lcd_clear(void)
 439 {
 440 #if LCD_BPP == LCD_MONOCHROME
 441         /* Setting the palette */
 442         lcd_initcolregs();
 443
 444 #elif LCD_BPP == LCD_COLOR8
 445         /* Setting the palette */
 446         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 447         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 448         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 449         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 450         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 451         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 452         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 453         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 454         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 455 #endif
 456
 457 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 458         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 459         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 460 #else
 461         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 462         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 463 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 464
 465 #ifdef  LCD_TEST_PATTERN
 466         test_pattern();
 467 #else
 468         /* set framebuffer to background color */
 469         memset((char *)lcd_base,
 470                 COLOR_MASK(lcd_getbgcolor()),
 471                 lcd_line_length * panel_info.vl_row);
 472 #endif
 473         /* Paint the logo and retrieve LCD base address */
 474         debug("[LCD] Drawing the logo...\n");
 475         lcd_console_address = lcd_logo();
 476
 477         console_col = 0;
 478         console_row = 0;
 479         lcd_sync();
 480 }
 481
 482 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 483                         char *const argv[])
 484 {
 485         lcd_clear();
 486         return 0;
 487 }
 488
 489 U_BOOT_CMD(
 490         cls,    1,      1,      do_lcd_clear,
 491         "clear screen",
 492         ""
 493 );
 494
 495 /*----------------------------------------------------------------------*/
 496
 497 static int lcd_init(void *lcdbase)
 498 {
 499         /* Initialize the lcd controller */
 500         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 501
 502         lcd_ctrl_init(lcdbase);
 503
 504         /*
 505          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 506          * the 'lcdbase' argument and uses custom lcd base address
 507          * by setting up gd->fb_base. Check for this condition and fixup
 508          * 'lcd_base' address.
 509          */
 510         if (map_to_sysmem(lcdbase) != gd->fb_base)
 511                 lcd_base = map_sysmem(gd->fb_base, 0);
 512
 513         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 514
 515         lcd_get_size(&lcd_line_length);
 516         lcd_is_enabled = 1;
 517         lcd_clear();
 518         lcd_enable();
 519
 520         /* Initialize the console */
 521         console_col = 0;
 522 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 523         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 524 #else
 525         console_row = 1;        /* leave 1 blank line below logo */
 526 #endif
 527
 528         return 0;
 529 }
 530
 531
 532 /************************************************************************/
 533 /* ** ROM capable initialization part - needed to reserve FB memory     */
 534 /************************************************************************/
 535 /*
 536  * This is called early in the system initialization to grab memory
 537  * for the LCD controller.
 538  * Returns new address for monitor, after reserving LCD buffer memory
 539  *
 540  * Note that this is running from ROM, so no write access to global data.
 541  */
 542 ulong lcd_setmem(ulong addr)
 543 {
 544         ulong size;
 545         int line_length;
 546
 547         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 548                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 549
 550         size = lcd_get_size(&line_length);
 551
 552         /* Round up to nearest full page, or MMU section if defined */
 553         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 554         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 555
 556         /* Allocate pages for the frame buffer. */
 557         addr -= size;
 558
 559         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 560               size >> 10, addr);
 561
 562         return addr;
 563 }
 564
 565 /*----------------------------------------------------------------------*/
 566
 567 static void lcd_setfgcolor(int color)
 568 {
 569         lcd_color_fg = color;
 570 }
 571
 572 /*----------------------------------------------------------------------*/
 573
 574 static void lcd_setbgcolor(int color)
 575 {
 576         lcd_color_bg = color;
 577 }
 578
 579 /*----------------------------------------------------------------------*/
 580
 581 int lcd_getfgcolor(void)
 582 {
 583         return lcd_color_fg;
 584 }
 585
 586 /*----------------------------------------------------------------------*/
 587
 588 static int lcd_getbgcolor(void)
 589 {
 590         return lcd_color_bg;
 591 }
 592
 593 /************************************************************************/
 594 /* ** Chipset depending Bitmap / Logo stuff...                          */
 595 /************************************************************************/
 596 static inline ushort *configuration_get_cmap(void)
 597 {
 598 #if defined CONFIG_CPU_PXA
 599         struct pxafb_info *fbi = &panel_info.pxa;
 600         return (ushort *)fbi->palette;
 601 #elif defined(CONFIG_MPC823)
 602         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 603         cpm8xx_t *cp = &(immr->im_cpm);
 604         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 605 #elif defined(CONFIG_ATMEL_LCD)
 606         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 607 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 608         return panel_info.cmap;
 609 #elif defined(CONFIG_LCD_LOGO)
 610         return bmp_logo_palette;
 611 #else
 612         return NULL;
 613 #endif
 614 }
 615
 616 #ifdef CONFIG_LCD_LOGO
 617 void bitmap_plot(int x, int y)
 618 {
 619 #ifdef CONFIG_ATMEL_LCD
 620         uint *cmap = (uint *)bmp_logo_palette;
 621 #else
 622         ushort *cmap = (ushort *)bmp_logo_palette;
 623 #endif
 624         ushort i, j;
 625         uchar *bmap;
 626         uchar *fb;
 627         ushort *fb16;
 628 #if defined(CONFIG_MPC823)
 629         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 630         cpm8xx_t *cp = &(immr->im_cpm);
 631 #endif
 632         unsigned bpix = NBITS(panel_info.vl_bpix);
 633
 634         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 635                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 636                 ARRAY_SIZE(bmp_logo_palette));
 637
 638         bmap = &bmp_logo_bitmap[0];
 639         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 640
 641         if (bpix < 12) {
 642                 /* Leave room for default color map
 643                  * default case: generic system with no cmap (most likely 16bpp)
 644                  * cmap was set to the source palette, so no change is done.
 645                  * This avoids even more ifdefs in the next stanza
 646                  */
 647 #if defined(CONFIG_MPC823)
 648                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 649 #elif defined(CONFIG_ATMEL_LCD)
 650                 cmap = (uint *)configuration_get_cmap();
 651 #else
 652                 cmap = configuration_get_cmap();
 653 #endif
 654
 655                 WATCHDOG_RESET();
 656
 657                 /* Set color map */
 658                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 659                         ushort colreg = bmp_logo_palette[i];
 660 #ifdef CONFIG_ATMEL_LCD
 661                         uint lut_entry;
 662 #ifdef CONFIG_ATMEL_LCD_BGR555
 663                         lut_entry = ((colreg & 0x000F) << 11) |
 664                                         ((colreg & 0x00F0) <<  2) |
 665                                         ((colreg & 0x0F00) >>  7);
 666 #else /* CONFIG_ATMEL_LCD_RGB565 */
 667                         lut_entry = ((colreg & 0x000F) << 1) |
 668                                         ((colreg & 0x00F0) << 3) |
 669                                         ((colreg & 0x0F00) << 4);
 670 #endif
 671                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 672                         cmap++;
 673 #else /* !CONFIG_ATMEL_LCD */
 674 #ifdef  CONFIG_SYS_INVERT_COLORS
 675                         *cmap++ = 0xffff - colreg;
 676 #else
 677                         *cmap++ = colreg;
 678 #endif
 679 #endif /* CONFIG_ATMEL_LCD */
 680                 }
 681
 682                 WATCHDOG_RESET();
 683
 684                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 685                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 686                         bmap += BMP_LOGO_WIDTH;
 687                         fb += panel_info.vl_col;
 688                 }
 689         }
 690         else { /* true color mode */
 691                 u16 col16;
 692                 fb16 = (ushort *)fb;
 693                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 694                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 695                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 696                                 fb16[j] =
 697                                         ((col16 & 0x000F) << 1) |
 698                                         ((col16 & 0x00F0) << 3) |
 699                                         ((col16 & 0x0F00) << 4);
 700                                 }
 701                         bmap += BMP_LOGO_WIDTH;
 702                         fb16 += panel_info.vl_col;
 703                 }
 704         }
 705
 706         WATCHDOG_RESET();
 707         lcd_sync();
 708 }
 709 #else
 710 static inline void bitmap_plot(int x, int y) {}
 711 #endif /* CONFIG_LCD_LOGO */
 712
 713 /*----------------------------------------------------------------------*/
 714 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 715 /*
 716  * Display the BMP file located at address bmp_image.
 717  * Only uncompressed.
 718  */
 719
 720 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 721 #define BMP_ALIGN_CENTER        0x7FFF
 722
 723 static void splash_align_axis(int *axis, unsigned long panel_size,
 724                                         unsigned long picture_size)
 725 {
 726         unsigned long panel_picture_delta = panel_size - picture_size;
 727         unsigned long axis_alignment;
 728
 729         if (*axis == BMP_ALIGN_CENTER)
 730                 axis_alignment = panel_picture_delta / 2;
 731         else if (*axis < 0)
 732                 axis_alignment = panel_picture_delta + *axis + 1;
 733         else
 734                 return;
 735
 736         *axis = max(0, axis_alignment);
 737 }
 738 #endif
 739
 740
 741 #ifdef CONFIG_LCD_BMP_RLE8
 742
 743 #define BMP_RLE8_ESCAPE         0
 744 #define BMP_RLE8_EOL            0
 745 #define BMP_RLE8_EOBMP          1
 746 #define BMP_RLE8_DELTA          2
 747
 748 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 749                                   int cnt)
 750 {
 751         while (cnt > 0) {
 752                 *(*fbp)++ = cmap[*bmap++];
 753                 cnt--;
 754         }
 755 }
 756
 757 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 758 {
 759         ushort *fb = *fbp;
 760         int cnt_8copy = cnt >> 3;
 761
 762         cnt -= cnt_8copy << 3;
 763         while (cnt_8copy > 0) {
 764                 *fb++ = c;
 765                 *fb++ = c;
 766                 *fb++ = c;
 767                 *fb++ = c;
 768                 *fb++ = c;
 769                 *fb++ = c;
 770                 *fb++ = c;
 771                 *fb++ = c;
 772                 cnt_8copy--;
 773         }
 774         while (cnt > 0) {
 775                 *fb++ = c;
 776                 cnt--;
 777         }
 778         *fbp = fb;
 779 }
 780
 781 /*
 782  * Do not call this function directly, must be called from lcd_display_bitmap.
 783  */
 784 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 785                                     int x_off, int y_off)
 786 {
 787         uchar *bmap;
 788         ulong width, height;
 789         ulong cnt, runlen;
 790         int x, y;
 791         int decode = 1;
 792
 793         width = get_unaligned_le32(&bmp->header.width);
 794         height = get_unaligned_le32(&bmp->header.height);
 795         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 796
 797         x = 0;
 798         y = height - 1;
 799
 800         while (decode) {
 801                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 802                         switch (bmap[1]) {
 803                         case BMP_RLE8_EOL:
 804                                 /* end of line */
 805                                 bmap += 2;
 806                                 x = 0;
 807                                 y--;
 808                                 /* 16bpix, 2-byte per pixel, width should *2 */
 809                                 fb -= (width * 2 + lcd_line_length);
 810                                 break;
 811                         case BMP_RLE8_EOBMP:
 812                                 /* end of bitmap */
 813                                 decode = 0;
 814                                 break;
 815                         case BMP_RLE8_DELTA:
 816                                 /* delta run */
 817                                 x += bmap[2];
 818                                 y -= bmap[3];
 819                                 /* 16bpix, 2-byte per pixel, x should *2 */
 820                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 821                                         * lcd_line_length + (x + x_off) * 2);
 822                                 bmap += 4;
 823                                 break;
 824                         default:
 825                                 /* unencoded run */
 826                                 runlen = bmap[1];
 827                                 bmap += 2;
 828                                 if (y < height) {
 829                                         if (x < width) {
 830                                                 if (x + runlen > width)
 831                                                         cnt = width - x;
 832                                                 else
 833                                                         cnt = runlen;
 834                                                 draw_unencoded_bitmap(
 835                                                         (ushort **)&fb,
 836                                                         bmap, cmap, cnt);
 837                                         }
 838                                         x += runlen;
 839                                 }
 840                                 bmap += runlen;
 841                                 if (runlen & 1)
 842                                         bmap++;
 843                         }
 844                 } else {
 845                         /* encoded run */
 846                         if (y < height) {
 847                                 runlen = bmap[0];
 848                                 if (x < width) {
 849                                         /* aggregate the same code */
 850                                         while (bmap[0] == 0xff &&
 851                                                bmap[2] != BMP_RLE8_ESCAPE &&
 852                                                bmap[1] == bmap[3]) {
 853                                                 runlen += bmap[2];
 854                                                 bmap += 2;
 855                                         }
 856                                         if (x + runlen > width)
 857                                                 cnt = width - x;
 858                                         else
 859                                                 cnt = runlen;
 860                                         draw_encoded_bitmap((ushort **)&fb,
 861                                                 cmap[bmap[1]], cnt);
 862                                 }
 863                                 x += runlen;
 864                         }
 865                         bmap += 2;
 866                 }
 867         }
 868 }
 869 #endif
 870
 871 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 872 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 873 #else
 874 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 875 #endif
 876
 877 #if defined(CONFIG_BMP_16BPP)
 878 #if defined(CONFIG_ATMEL_LCD_BGR555)
 879 static inline void fb_put_word(uchar **fb, uchar **from)
 880 {
 881         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 882         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 883         *from += 2;
 884 }
 885 #else
 886 static inline void fb_put_word(uchar **fb, uchar **from)
 887 {
 888         *(*fb)++ = *(*from)++;
 889         *(*fb)++ = *(*from)++;
 890 }
 891 #endif
 892 #endif /* CONFIG_BMP_16BPP */
 893
 894 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 895 {
 896 #if !defined(CONFIG_MCC200)
 897         ushort *cmap = NULL;
 898 #endif
 899         ushort *cmap_base = NULL;
 900         ushort i, j;
 901         uchar *fb;
 902         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 903         uchar *bmap;
 904         ushort padded_width;
 905         unsigned long width, height, byte_width;
 906         unsigned long pwidth = panel_info.vl_col;
 907         unsigned colors, bpix, bmp_bpix;
 908
 909         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 910                 bmp->header.signature[1] == 'M')) {
 911                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 912
 913                 return 1;
 914         }
 915
 916         width = get_unaligned_le32(&bmp->header.width);
 917         height = get_unaligned_le32(&bmp->header.height);
 918         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 919
 920         colors = 1 << bmp_bpix;
 921
 922         bpix = NBITS(panel_info.vl_bpix);
 923
 924         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 925                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 926                         bpix, bmp_bpix);
 927
 928                 return 1;
 929         }
 930
 931         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 932         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 933                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 934                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 935                 return 1;
 936         }
 937
 938         debug("Display-bmp: %d x %d  with %d colors\n",
 939                 (int)width, (int)height, (int)colors);
 940
 941 #if !defined(CONFIG_MCC200)
 942         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 943         if (bmp_bpix == 8) {
 944                 cmap = configuration_get_cmap();
 945                 cmap_base = cmap;
 946
 947                 /* Set color map */
 948                 for (i = 0; i < colors; ++i) {
 949                         bmp_color_table_entry_t cte = bmp->color_table[i];
 950 #if !defined(CONFIG_ATMEL_LCD)
 951                         ushort colreg =
 952                                 ( ((cte.red)   << 8) & 0xf800) |
 953                                 ( ((cte.green) << 3) & 0x07e0) |
 954                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 955 #ifdef CONFIG_SYS_INVERT_COLORS
 956                         *cmap = 0xffff - colreg;
 957 #else
 958                         *cmap = colreg;
 959 #endif
 960 #if defined(CONFIG_MPC823)
 961                         cmap--;
 962 #else
 963                         cmap++;
 964 #endif
 965 #else /* CONFIG_ATMEL_LCD */
 966                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 967 #endif
 968                 }
 969         }
 970 #endif
 971         /*
 972          *  BMP format for Monochrome assumes that the state of a
 973          * pixel is described on a per Bit basis, not per Byte.
 974          *  So, in case of Monochrome BMP we should align widths
 975          * on a byte boundary and convert them from Bit to Byte
 976          * units.
 977          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 978          * their own ways, so make the converting to be MCC200
 979          * specific.
 980          */
 981 #if defined(CONFIG_MCC200)
 982         if (bpix == 1) {
 983                 width = ((width + 7) & ~7) >> 3;
 984                 x     = ((x + 7) & ~7) >> 3;
 985                 pwidth= ((pwidth + 7) & ~7) >> 3;
 986         }
 987 #endif
 988
 989         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 990
 991 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 992         splash_align_axis(&x, pwidth, width);
 993         splash_align_axis(&y, panel_info.vl_row, height);
 994 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 995
 996         if ((x + width) > pwidth)
 997                 width = pwidth - x;
 998         if ((y + height) > panel_info.vl_row)
 999                 height = panel_info.vl_row - y;
1000
1001         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
1002         fb   = (uchar *)(lcd_base +
1003                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1004
1005         switch (bmp_bpix) {
1006         case 1: /* pass through */
1007         case 8:
1008 #ifdef CONFIG_LCD_BMP_RLE8
1009                 u32 compression = get_unaligned_le32(&bmp->header.compression);
1010                 if (compression == BMP_BI_RLE8) {
1011                         if (bpix != 16) {
1012                                 /* TODO implement render code for bpix != 16 */
1013                                 printf("Error: only support 16 bpix");
1014                                 return 1;
1015                         }
1016                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1017                         break;
1018                 }
1019 #endif
1020
1021                 if (bpix != 16)
1022                         byte_width = width;
1023                 else
1024                         byte_width = width * 2;
1025
1026                 for (i = 0; i < height; ++i) {
1027                         WATCHDOG_RESET();
1028                         for (j = 0; j < width; j++) {
1029                                 if (bpix != 16) {
1030                                         FB_PUT_BYTE(fb, bmap);
1031                                 } else {
1032                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1033                                         fb += sizeof(uint16_t) / sizeof(*fb);
1034                                 }
1035                         }
1036                         bmap += (padded_width - width);
1037                         fb -= byte_width + lcd_line_length;
1038                 }
1039                 break;
1040
1041 #if defined(CONFIG_BMP_16BPP)
1042         case 16:
1043                 for (i = 0; i < height; ++i) {
1044                         WATCHDOG_RESET();
1045                         for (j = 0; j < width; j++)
1046                                 fb_put_word(&fb, &bmap);
1047
1048                         bmap += (padded_width - width) * 2;
1049                         fb -= width * 2 + lcd_line_length;
1050                 }
1051                 break;
1052 #endif /* CONFIG_BMP_16BPP */
1053
1054 #if defined(CONFIG_BMP_32BPP)
1055         case 32:
1056                 for (i = 0; i < height; ++i) {
1057                         for (j = 0; j < width; j++) {
1058                                 *(fb++) = *(bmap++);
1059                                 *(fb++) = *(bmap++);
1060                                 *(fb++) = *(bmap++);
1061                                 *(fb++) = *(bmap++);
1062                         }
1063                         fb -= lcd_line_length + width * (bpix / 8);
1064                 }
1065                 break;
1066 #endif /* CONFIG_BMP_32BPP */
1067         default:
1068                 break;
1069         };
1070
1071         lcd_sync();
1072         return 0;
1073 }
1074 #endif
1075
1076 static void *lcd_logo(void)
1077 {
1078 #ifdef CONFIG_SPLASH_SCREEN
1079         char *s;
1080         ulong addr;
1081         static int do_splash = 1;
1082
1083         if (do_splash && (s = getenv("splashimage")) != NULL) {
1084                 int x = 0, y = 0;
1085                 do_splash = 0;
1086
1087                 if (splash_screen_prepare())
1088                         return (void *)lcd_base;
1089
1090                 addr = simple_strtoul (s, NULL, 16);
1091
1092                 splash_get_pos(&x, &y);
1093
1094                 if (bmp_display(addr, x, y) == 0)
1095                         return (void *)lcd_base;
1096         }
1097 #endif /* CONFIG_SPLASH_SCREEN */
1098
1099         bitmap_plot(0, 0);
1100
1101 #ifdef CONFIG_LCD_INFO
1102         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1103         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1104         lcd_show_board_info();
1105 #endif /* CONFIG_LCD_INFO */
1106
1107 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1108         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1109 #else
1110         return (void *)lcd_base;
1111 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1112 }
1113
1114 #ifdef CONFIG_SPLASHIMAGE_GUARD
1115 static int on_splashimage(const char *name, const char *value, enum env_op op,
1116         int flags)
1117 {
1118         ulong addr;
1119         int aligned;
1120
1121         if (op == env_op_delete)
1122                 return 0;
1123
1124         addr = simple_strtoul(value, NULL, 16);
1125         /* See README.displaying-bmps */
1126         aligned = (addr % 4 == 2);
1127         if (!aligned) {
1128                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1129                 return -1;
1130         }
1131
1132         return 0;
1133 }
1134
1135 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1136 #endif
1137
1138 void lcd_position_cursor(unsigned col, unsigned row)
1139 {
1140         console_col = min(col, CONSOLE_COLS - 1);
1141         console_row = min(row, CONSOLE_ROWS - 1);
1142 }
1143
1144 int lcd_get_pixel_width(void)
1145 {
1146         return panel_info.vl_col;
1147 }
1148
1149 int lcd_get_pixel_height(void)
1150 {
1151         return panel_info.vl_row;
1152 }
1153
1154 int lcd_get_screen_rows(void)
1155 {
1156         return CONSOLE_ROWS;
1157 }
1158
1159 int lcd_get_screen_columns(void)
1160 {
1161         return CONSOLE_COLS;
1162 }
1163
1164 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1165 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1166 {
1167         u32 stride;
1168         fdt32_t cells[2];
1169         int ret;
1170         static const char format[] =
1171 #if LCD_BPP == LCD_COLOR16
1172                 "r5g6b5";
1173 #else
1174                 "";
1175 #endif
1176
1177         if (!format[0])
1178                 return -1;
1179
1180         stride = panel_info.vl_col * 2;
1181
1182         cells[0] = cpu_to_fdt32(gd->fb_base);
1183         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1184         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1185         if (ret < 0)
1186                 return -1;
1187
1188         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1189         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1190         if (ret < 0)
1191                 return -1;
1192
1193         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1194         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1195         if (ret < 0)
1196                 return -1;
1197
1198         cells[0] = cpu_to_fdt32(stride);
1199         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1200         if (ret < 0)
1201                 return -1;
1202
1203         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1204         if (ret < 0)
1205                 return -1;
1206
1207         ret = fdt_delprop(blob, off, "status");
1208         if (ret < 0)
1209                 return -1;
1210
1211         return 0;
1212 }
1213
1214 int lcd_dt_simplefb_add_node(void *blob)
1215 {
1216         static const char compat[] = "simple-framebuffer";
1217         static const char disabled[] = "disabled";
1218         int off, ret;
1219
1220         off = fdt_add_subnode(blob, 0, "framebuffer");
1221         if (off < 0)
1222                 return -1;
1223
1224         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1225         if (ret < 0)
1226                 return -1;
1227
1228         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1229         if (ret < 0)
1230                 return -1;
1231
1232         return lcd_dt_simplefb_configure_node(blob, off);
1233 }
1234
1235 int lcd_dt_simplefb_enable_existing_node(void *blob)
1236 {
1237         int off;
1238
1239         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1240         if (off < 0)
1241                 return -1;
1242
1243         return lcd_dt_simplefb_configure_node(blob, off);
1244 }
1245 #endif