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 #include <asm/byteorder.h>
  37 #endif
  38
  39 #if defined(CONFIG_MPC823)
  40 #include <lcdvideo.h>
  41 #endif
  42
  43 #if defined(CONFIG_ATMEL_LCD)
  44 #include <atmel_lcdc.h>
  45 #endif
  46
  47 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  48 #include <libfdt.h>
  49 #endif
  50
  51 /************************************************************************/
  52 /* ** FONT DATA                                                         */
  53 /************************************************************************/
  54 #include <video_font.h>         /* Get font data, width and height      */
  55
  56 /************************************************************************/
  57 /* ** LOGO DATA                                                         */
  58 /************************************************************************/
  59 #ifdef CONFIG_LCD_LOGO
  60 # include <bmp_logo.h>          /* Get logo data, width and height      */
  61 # include <bmp_logo_data.h>
  62 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  63 #  error Default Color Map overlaps with Logo Color Map
  64 # endif
  65 #endif
  66
  67 #ifdef CONFIG_SANDBOX
  68 #include <asm/sdl.h>
  69 #endif
  70
  71 #ifndef CONFIG_LCD_ALIGNMENT
  72 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  73 #endif
  74
  75 /* By default we scroll by a single line */
  76 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  77 #define CONFIG_CONSOLE_SCROLL_LINES 1
  78 #endif
  79
  80 /************************************************************************/
  81 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  82 /************************************************************************/
  83 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  84 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  85                                         / VIDEO_FONT_HEIGHT)
  86 #else
  87 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  88 #endif
  89
  90 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
  91 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  92 #define CONSOLE_ROW_FIRST       lcd_console_address
  93 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  94 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  95                                         - CONSOLE_ROW_SIZE)
  96 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
  97 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  98
  99 #if LCD_BPP == LCD_MONOCHROME
 100 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 101                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 102 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16) || \
 103         (LCD_BPP == LCD_COLOR32)
 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_putc_xy(ushort x, ushort y, uchar  c);
 113
 114 static int lcd_init(void *lcdbase);
 115
 116 static void *lcd_logo(void);
 117
 118 static void lcd_setfgcolor(int color);
 119 static void lcd_setbgcolor(int color);
 120
 121 static int lcd_color_fg;
 122 static int lcd_color_bg;
 123 int lcd_line_length;
 124
 125 char lcd_is_enabled = 0;
 126
 127 static short console_col;
 128 static short console_row;
 129
 130 static void *lcd_console_address;
 131 static void *lcd_base;                  /* Start of framebuffer memory  */
 132
 133 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 134
 135 /************************************************************************/
 136
 137 /* Flush LCD activity to the caches */
 138 void lcd_sync(void)
 139 {
 140         /*
 141          * flush_dcache_range() is declared in common.h but it seems that some
 142          * architectures do not actually implement it. Is there a way to find
 143          * out whether it exists? For now, ARM is safe.
 144          */
 145 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 146         int line_length;
 147
 148         if (lcd_flush_dcache)
 149                 flush_dcache_range((u32)lcd_base,
 150                         (u32)(lcd_base + lcd_get_size(&line_length)));
 151 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 152         static ulong last_sync;
 153
 154         if (get_timer(last_sync) > 10) {
 155                 sandbox_sdl_sync(lcd_base);
 156                 last_sync = get_timer(0);
 157         }
 158 #endif
 159 }
 160
 161 void lcd_set_flush_dcache(int flush)
 162 {
 163         lcd_flush_dcache = (flush != 0);
 164 }
 165
 166 /*----------------------------------------------------------------------*/
 167
 168 static void console_scrollup(void)
 169 {
 170         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 171
 172         /* Copy up rows ignoring those that will be overwritten */
 173         memcpy(CONSOLE_ROW_FIRST,
 174                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 175                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 176
 177         /* Clear the last rows */
 178 #if (LCD_BPP != LCD_COLOR32)
 179         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 180                 COLOR_MASK(lcd_color_bg),
 181                 CONSOLE_ROW_SIZE * rows);
 182 #else
 183         u32 *ppix = lcd_console_address +
 184                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
 185         u32 i;
 186         for (i = 0;
 187             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
 188             i++) {
 189                 *ppix++ = COLOR_MASK(lcd_color_bg);
 190         }
 191 #endif
 192         lcd_sync();
 193         console_row -= rows;
 194 }
 195
 196 /*----------------------------------------------------------------------*/
 197
 198 static inline void console_back(void)
 199 {
 200         if (--console_col < 0) {
 201                 console_col = CONSOLE_COLS-1 ;
 202                 if (--console_row < 0)
 203                         console_row = 0;
 204         }
 205
 206         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 207                 console_row * VIDEO_FONT_HEIGHT, ' ');
 208 }
 209
 210 /*----------------------------------------------------------------------*/
 211
 212 static inline void console_newline(void)
 213 {
 214         console_col = 0;
 215
 216         /* Check if we need to scroll the terminal */
 217         if (++console_row >= CONSOLE_ROWS)
 218                 console_scrollup();
 219         else
 220                 lcd_sync();
 221 }
 222
 223 /*----------------------------------------------------------------------*/
 224
 225 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 226 {
 227         lcd_putc(c);
 228 }
 229
 230 void lcd_putc(const char c)
 231 {
 232         if (!lcd_is_enabled) {
 233                 serial_putc(c);
 234
 235                 return;
 236         }
 237
 238         switch (c) {
 239         case '\r':
 240                 console_col = 0;
 241
 242                 return;
 243         case '\n':
 244                 console_newline();
 245
 246                 return;
 247         case '\t':      /* Tab (8 chars alignment) */
 248                 console_col +=  8;
 249                 console_col &= ~7;
 250
 251                 if (console_col >= CONSOLE_COLS)
 252                         console_newline();
 253
 254                 return;
 255         case '\b':
 256                 console_back();
 257
 258                 return;
 259         default:
 260                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 261                         console_row * VIDEO_FONT_HEIGHT, c);
 262                 if (++console_col >= CONSOLE_COLS)
 263                         console_newline();
 264         }
 265 }
 266
 267 /*----------------------------------------------------------------------*/
 268
 269 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 270 {
 271         lcd_puts(s);
 272 }
 273
 274 void lcd_puts(const char *s)
 275 {
 276         if (!lcd_is_enabled) {
 277                 serial_puts(s);
 278
 279                 return;
 280         }
 281
 282         while (*s)
 283                 lcd_putc(*s++);
 284
 285         lcd_sync();
 286 }
 287
 288 /*----------------------------------------------------------------------*/
 289
 290 void lcd_printf(const char *fmt, ...)
 291 {
 292         va_list args;
 293         char buf[CONFIG_SYS_PBSIZE];
 294
 295         va_start(args, fmt);
 296         vsprintf(buf, fmt, args);
 297         va_end(args);
 298
 299         lcd_puts(buf);
 300 }
 301
 302 /************************************************************************/
 303 /* ** Low-Level Graphics Routines                                       */
 304 /************************************************************************/
 305
 306 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 307 {
 308         uchar *dest;
 309         ushort row;
 310
 311 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 312         y += BMP_LOGO_HEIGHT;
 313 #endif
 314
 315 #if LCD_BPP == LCD_MONOCHROME
 316         ushort off  = x * (1 << LCD_BPP) % 8;
 317 #endif
 318
 319         dest = (uchar *)(lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP)/8);
 320
 321         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 322                 uchar *s = str;
 323                 int i;
 324 #if LCD_BPP == LCD_COLOR16
 325                 ushort *d = (ushort *)dest;
 326 #elif LCD_BPP == LCD_COLOR32
 327                 u32 *d = (u32 *)dest;
 328 #else
 329                 uchar *d = dest;
 330 #endif
 331
 332 #if LCD_BPP == LCD_MONOCHROME
 333                 uchar rest = *d & -(1 << (8 - off));
 334                 uchar sym;
 335 #endif
 336                 for (i = 0; i < count; ++i) {
 337                         uchar c, bits;
 338
 339                         c = *s++;
 340                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 341
 342 #if LCD_BPP == LCD_MONOCHROME
 343                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 344                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 345
 346                         *d++ = rest | (sym >> off);
 347                         rest = sym << (8-off);
 348 #elif LCD_BPP == LCD_COLOR8
 349                         for (c = 0; c < 8; ++c) {
 350                                 *d++ = (bits & 0x80) ?
 351                                                 lcd_color_fg : lcd_color_bg;
 352                                 bits <<= 1;
 353                         }
 354 #elif LCD_BPP == LCD_COLOR16
 355                         for (c = 0; c < 8; ++c) {
 356                                 *d++ = (bits & 0x80) ?
 357                                                 lcd_color_fg : lcd_color_bg;
 358                                 bits <<= 1;
 359                         }
 360 #elif LCD_BPP == LCD_COLOR32
 361                         for (c = 0; c < 8; ++c) {
 362                                 *d++ = (bits & 0x80) ?
 363                                                 lcd_color_fg : lcd_color_bg;
 364                                 bits <<= 1;
 365                         }
 366 #endif
 367                 }
 368 #if LCD_BPP == LCD_MONOCHROME
 369                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 370 #endif
 371         }
 372 }
 373
 374 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 375 {
 376         lcd_drawchars(x, y, &c, 1);
 377 }
 378
 379 /************************************************************************/
 380 /**  Small utility to check that you got the colours right              */
 381 /************************************************************************/
 382 #ifdef LCD_TEST_PATTERN
 383
 384 #define N_BLK_VERT      2
 385 #define N_BLK_HOR       3
 386
 387 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 388         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 389         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 390 };
 391
 392 static void test_pattern(void)
 393 {
 394         ushort v_max  = panel_info.vl_row;
 395         ushort h_max  = panel_info.vl_col;
 396         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 397         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 398         ushort v, h;
 399         uchar *pix = (uchar *)lcd_base;
 400
 401         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 402                 h_max, v_max, h_step, v_step);
 403
 404         /* WARNING: Code silently assumes 8bit/pixel */
 405         for (v = 0; v < v_max; ++v) {
 406                 uchar iy = v / v_step;
 407                 for (h = 0; h < h_max; ++h) {
 408                         uchar ix = N_BLK_HOR * iy + h / h_step;
 409                         *pix++ = test_colors[ix];
 410                 }
 411         }
 412 }
 413 #endif /* LCD_TEST_PATTERN */
 414
 415
 416 /************************************************************************/
 417 /* ** GENERIC Initialization Routines                                   */
 418 /************************************************************************/
 419 /*
 420  * With most lcd drivers the line length is set up
 421  * by calculating it from panel_info parameters. Some
 422  * drivers need to calculate the line length differently,
 423  * so make the function weak to allow overriding it.
 424  */
 425 __weak int lcd_get_size(int *line_length)
 426 {
 427         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 428         return *line_length * panel_info.vl_row;
 429 }
 430
 431 int drv_lcd_init(void)
 432 {
 433         struct stdio_dev lcddev;
 434         int rc;
 435
 436         lcd_base = map_sysmem(gd->fb_base, 0);
 437
 438         lcd_init(lcd_base);             /* LCD initialization */
 439
 440         /* Device initialization */
 441         memset(&lcddev, 0, sizeof(lcddev));
 442
 443         strcpy(lcddev.name, "lcd");
 444         lcddev.ext   = 0;                       /* No extensions */
 445         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 446         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 447         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 448
 449         rc = stdio_register(&lcddev);
 450
 451         return (rc == 0) ? 1 : rc;
 452 }
 453
 454 /*----------------------------------------------------------------------*/
 455 void lcd_clear(void)
 456 {
 457 #if LCD_BPP == LCD_MONOCHROME
 458         /* Setting the palette */
 459         lcd_initcolregs();
 460
 461 #elif LCD_BPP == LCD_COLOR8
 462         /* Setting the palette */
 463         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 464         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 465         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 466         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 467         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 468         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 469         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 470         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 471         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 472 #endif
 473
 474 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 475         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 476         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 477 #else
 478         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 479         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 480 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 481
 482 #ifdef  LCD_TEST_PATTERN
 483         test_pattern();
 484 #else
 485         /* set framebuffer to background color */
 486 #if (LCD_BPP != LCD_COLOR32)
 487         memset((char *)lcd_base,
 488                 COLOR_MASK(lcd_color_bg),
 489                 lcd_line_length * panel_info.vl_row);
 490 #else
 491         u32 *ppix = lcd_base;
 492         u32 i;
 493         for (i = 0;
 494            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 495            i++) {
 496                 *ppix++ = COLOR_MASK(lcd_color_bg);
 497         }
 498 #endif
 499 #endif
 500         /* Paint the logo and retrieve LCD base address */
 501         debug("[LCD] Drawing the logo...\n");
 502         lcd_console_address = lcd_logo();
 503
 504         console_col = 0;
 505         console_row = 0;
 506         lcd_sync();
 507 }
 508
 509 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 510                         char *const argv[])
 511 {
 512         lcd_clear();
 513         return 0;
 514 }
 515
 516 U_BOOT_CMD(
 517         cls,    1,      1,      do_lcd_clear,
 518         "clear screen",
 519         ""
 520 );
 521
 522 /*----------------------------------------------------------------------*/
 523
 524 static int lcd_init(void *lcdbase)
 525 {
 526         /* Initialize the lcd controller */
 527         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 528
 529         lcd_ctrl_init(lcdbase);
 530
 531         /*
 532          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 533          * the 'lcdbase' argument and uses custom lcd base address
 534          * by setting up gd->fb_base. Check for this condition and fixup
 535          * 'lcd_base' address.
 536          */
 537         if (map_to_sysmem(lcdbase) != gd->fb_base)
 538                 lcd_base = map_sysmem(gd->fb_base, 0);
 539
 540         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 541
 542         lcd_get_size(&lcd_line_length);
 543         lcd_is_enabled = 1;
 544         lcd_clear();
 545         lcd_enable();
 546
 547         /* Initialize the console */
 548         console_col = 0;
 549 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 550         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 551 #else
 552         console_row = 1;        /* leave 1 blank line below logo */
 553 #endif
 554
 555         return 0;
 556 }
 557
 558
 559 /************************************************************************/
 560 /* ** ROM capable initialization part - needed to reserve FB memory     */
 561 /************************************************************************/
 562 /*
 563  * This is called early in the system initialization to grab memory
 564  * for the LCD controller.
 565  * Returns new address for monitor, after reserving LCD buffer memory
 566  *
 567  * Note that this is running from ROM, so no write access to global data.
 568  */
 569 ulong lcd_setmem(ulong addr)
 570 {
 571         ulong size;
 572         int line_length;
 573
 574         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 575                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 576
 577         size = lcd_get_size(&line_length);
 578
 579         /* Round up to nearest full page, or MMU section if defined */
 580         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 581         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 582
 583         /* Allocate pages for the frame buffer. */
 584         addr -= size;
 585
 586         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 587               size >> 10, addr);
 588
 589         return addr;
 590 }
 591
 592 /*----------------------------------------------------------------------*/
 593
 594 static void lcd_setfgcolor(int color)
 595 {
 596         lcd_color_fg = color;
 597 }
 598
 599 /*----------------------------------------------------------------------*/
 600
 601 static void lcd_setbgcolor(int color)
 602 {
 603         lcd_color_bg = color;
 604 }
 605
 606 /************************************************************************/
 607 /* ** Chipset depending Bitmap / Logo stuff...                          */
 608 /************************************************************************/
 609 static inline ushort *configuration_get_cmap(void)
 610 {
 611 #if defined CONFIG_CPU_PXA
 612         struct pxafb_info *fbi = &panel_info.pxa;
 613         return (ushort *)fbi->palette;
 614 #elif defined(CONFIG_MPC823)
 615         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 616         cpm8xx_t *cp = &(immr->im_cpm);
 617         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 618 #elif defined(CONFIG_ATMEL_LCD)
 619         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 620 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 621         return panel_info.cmap;
 622 #elif defined(CONFIG_LCD_LOGO)
 623         return bmp_logo_palette;
 624 #else
 625         return NULL;
 626 #endif
 627 }
 628
 629 #ifdef CONFIG_LCD_LOGO
 630 void bitmap_plot(int x, int y)
 631 {
 632 #ifdef CONFIG_ATMEL_LCD
 633         uint *cmap = (uint *)bmp_logo_palette;
 634 #else
 635         ushort *cmap = (ushort *)bmp_logo_palette;
 636 #endif
 637         ushort i, j;
 638         uchar *bmap;
 639         uchar *fb;
 640         ushort *fb16;
 641 #if defined(CONFIG_MPC823)
 642         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 643         cpm8xx_t *cp = &(immr->im_cpm);
 644 #endif
 645         unsigned bpix = NBITS(panel_info.vl_bpix);
 646
 647         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 648                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 649                 ARRAY_SIZE(bmp_logo_palette));
 650
 651         bmap = &bmp_logo_bitmap[0];
 652         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 653
 654         if (bpix < 12) {
 655                 /* Leave room for default color map
 656                  * default case: generic system with no cmap (most likely 16bpp)
 657                  * cmap was set to the source palette, so no change is done.
 658                  * This avoids even more ifdefs in the next stanza
 659                  */
 660 #if defined(CONFIG_MPC823)
 661                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 662 #elif defined(CONFIG_ATMEL_LCD)
 663                 cmap = (uint *)configuration_get_cmap();
 664 #else
 665                 cmap = configuration_get_cmap();
 666 #endif
 667
 668                 WATCHDOG_RESET();
 669
 670                 /* Set color map */
 671                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 672                         ushort colreg = bmp_logo_palette[i];
 673 #ifdef CONFIG_ATMEL_LCD
 674                         uint lut_entry;
 675 #ifdef CONFIG_ATMEL_LCD_BGR555
 676                         lut_entry = ((colreg & 0x000F) << 11) |
 677                                         ((colreg & 0x00F0) <<  2) |
 678                                         ((colreg & 0x0F00) >>  7);
 679 #else /* CONFIG_ATMEL_LCD_RGB565 */
 680                         lut_entry = ((colreg & 0x000F) << 1) |
 681                                         ((colreg & 0x00F0) << 3) |
 682                                         ((colreg & 0x0F00) << 4);
 683 #endif
 684                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 685                         cmap++;
 686 #else /* !CONFIG_ATMEL_LCD */
 687 #ifdef  CONFIG_SYS_INVERT_COLORS
 688                         *cmap++ = 0xffff - colreg;
 689 #else
 690                         *cmap++ = colreg;
 691 #endif
 692 #endif /* CONFIG_ATMEL_LCD */
 693                 }
 694
 695                 WATCHDOG_RESET();
 696
 697                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 698                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 699                         bmap += BMP_LOGO_WIDTH;
 700                         fb += panel_info.vl_col;
 701                 }
 702         }
 703         else { /* true color mode */
 704                 u16 col16;
 705                 fb16 = (ushort *)fb;
 706                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 707                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 708                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 709                                 fb16[j] =
 710                                         ((col16 & 0x000F) << 1) |
 711                                         ((col16 & 0x00F0) << 3) |
 712                                         ((col16 & 0x0F00) << 4);
 713                                 }
 714                         bmap += BMP_LOGO_WIDTH;
 715                         fb16 += panel_info.vl_col;
 716                 }
 717         }
 718
 719         WATCHDOG_RESET();
 720         lcd_sync();
 721 }
 722 #else
 723 static inline void bitmap_plot(int x, int y) {}
 724 #endif /* CONFIG_LCD_LOGO */
 725
 726 /*----------------------------------------------------------------------*/
 727 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 728 /*
 729  * Display the BMP file located at address bmp_image.
 730  * Only uncompressed.
 731  */
 732
 733 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 734 #define BMP_ALIGN_CENTER        0x7FFF
 735
 736 static void splash_align_axis(int *axis, unsigned long panel_size,
 737                                         unsigned long picture_size)
 738 {
 739         unsigned long panel_picture_delta = panel_size - picture_size;
 740         unsigned long axis_alignment;
 741
 742         if (*axis == BMP_ALIGN_CENTER)
 743                 axis_alignment = panel_picture_delta / 2;
 744         else if (*axis < 0)
 745                 axis_alignment = panel_picture_delta + *axis + 1;
 746         else
 747                 return;
 748
 749         *axis = max(0, axis_alignment);
 750 }
 751 #endif
 752
 753
 754 #ifdef CONFIG_LCD_BMP_RLE8
 755
 756 #define BMP_RLE8_ESCAPE         0
 757 #define BMP_RLE8_EOL            0
 758 #define BMP_RLE8_EOBMP          1
 759 #define BMP_RLE8_DELTA          2
 760
 761 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 762                                   int cnt)
 763 {
 764         while (cnt > 0) {
 765                 *(*fbp)++ = cmap[*bmap++];
 766                 cnt--;
 767         }
 768 }
 769
 770 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 771 {
 772         ushort *fb = *fbp;
 773         int cnt_8copy = cnt >> 3;
 774
 775         cnt -= cnt_8copy << 3;
 776         while (cnt_8copy > 0) {
 777                 *fb++ = c;
 778                 *fb++ = c;
 779                 *fb++ = c;
 780                 *fb++ = c;
 781                 *fb++ = c;
 782                 *fb++ = c;
 783                 *fb++ = c;
 784                 *fb++ = c;
 785                 cnt_8copy--;
 786         }
 787         while (cnt > 0) {
 788                 *fb++ = c;
 789                 cnt--;
 790         }
 791         *fbp = fb;
 792 }
 793
 794 /*
 795  * Do not call this function directly, must be called from lcd_display_bitmap.
 796  */
 797 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 798                                     int x_off, int y_off)
 799 {
 800         uchar *bmap;
 801         ulong width, height;
 802         ulong cnt, runlen;
 803         int x, y;
 804         int decode = 1;
 805
 806         width = get_unaligned_le32(&bmp->header.width);
 807         height = get_unaligned_le32(&bmp->header.height);
 808         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 809
 810         x = 0;
 811         y = height - 1;
 812
 813         while (decode) {
 814                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 815                         switch (bmap[1]) {
 816                         case BMP_RLE8_EOL:
 817                                 /* end of line */
 818                                 bmap += 2;
 819                                 x = 0;
 820                                 y--;
 821                                 /* 16bpix, 2-byte per pixel, width should *2 */
 822                                 fb -= (width * 2 + lcd_line_length);
 823                                 break;
 824                         case BMP_RLE8_EOBMP:
 825                                 /* end of bitmap */
 826                                 decode = 0;
 827                                 break;
 828                         case BMP_RLE8_DELTA:
 829                                 /* delta run */
 830                                 x += bmap[2];
 831                                 y -= bmap[3];
 832                                 /* 16bpix, 2-byte per pixel, x should *2 */
 833                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 834                                         * lcd_line_length + (x + x_off) * 2);
 835                                 bmap += 4;
 836                                 break;
 837                         default:
 838                                 /* unencoded run */
 839                                 runlen = bmap[1];
 840                                 bmap += 2;
 841                                 if (y < height) {
 842                                         if (x < width) {
 843                                                 if (x + runlen > width)
 844                                                         cnt = width - x;
 845                                                 else
 846                                                         cnt = runlen;
 847                                                 draw_unencoded_bitmap(
 848                                                         (ushort **)&fb,
 849                                                         bmap, cmap, cnt);
 850                                         }
 851                                         x += runlen;
 852                                 }
 853                                 bmap += runlen;
 854                                 if (runlen & 1)
 855                                         bmap++;
 856                         }
 857                 } else {
 858                         /* encoded run */
 859                         if (y < height) {
 860                                 runlen = bmap[0];
 861                                 if (x < width) {
 862                                         /* aggregate the same code */
 863                                         while (bmap[0] == 0xff &&
 864                                                bmap[2] != BMP_RLE8_ESCAPE &&
 865                                                bmap[1] == bmap[3]) {
 866                                                 runlen += bmap[2];
 867                                                 bmap += 2;
 868                                         }
 869                                         if (x + runlen > width)
 870                                                 cnt = width - x;
 871                                         else
 872                                                 cnt = runlen;
 873                                         draw_encoded_bitmap((ushort **)&fb,
 874                                                 cmap[bmap[1]], cnt);
 875                                 }
 876                                 x += runlen;
 877                         }
 878                         bmap += 2;
 879                 }
 880         }
 881 }
 882 #endif
 883
 884 #if defined(CONFIG_MPC823)
 885 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 886 #else
 887 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 888 #endif
 889
 890 #if defined(CONFIG_BMP_16BPP)
 891 #if defined(CONFIG_ATMEL_LCD_BGR555)
 892 static inline void fb_put_word(uchar **fb, uchar **from)
 893 {
 894         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 895         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 896         *from += 2;
 897 }
 898 #else
 899 static inline void fb_put_word(uchar **fb, uchar **from)
 900 {
 901         *(*fb)++ = *(*from)++;
 902         *(*fb)++ = *(*from)++;
 903 }
 904 #endif
 905 #endif /* CONFIG_BMP_16BPP */
 906
 907 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 908 {
 909         ushort *cmap = NULL;
 910         ushort *cmap_base = NULL;
 911         ushort i, j;
 912         uchar *fb;
 913         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 914         uchar *bmap;
 915         ushort padded_width;
 916         unsigned long width, height, byte_width;
 917         unsigned long pwidth = panel_info.vl_col;
 918         unsigned colors, bpix, bmp_bpix;
 919
 920         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 921                 bmp->header.signature[1] == 'M')) {
 922                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 923
 924                 return 1;
 925         }
 926
 927         width = get_unaligned_le32(&bmp->header.width);
 928         height = get_unaligned_le32(&bmp->header.height);
 929         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 930
 931         colors = 1 << bmp_bpix;
 932
 933         bpix = NBITS(panel_info.vl_bpix);
 934
 935         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 936                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 937                         bpix, bmp_bpix);
 938
 939                 return 1;
 940         }
 941
 942         /*
 943          * We support displaying 8bpp BMPs on 16bpp LCDs
 944          * and displaying 24bpp BMPs on 32bpp LCDs
 945          * */
 946         if (bpix != bmp_bpix &&
 947             !(bmp_bpix == 8 && bpix == 16) &&
 948             !(bmp_bpix == 24 && bpix == 32)) {
 949                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 950                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 951                 return 1;
 952         }
 953
 954         debug("Display-bmp: %d x %d  with %d colors\n",
 955                 (int)width, (int)height, (int)colors);
 956
 957         if (bmp_bpix == 8) {
 958                 cmap = configuration_get_cmap();
 959                 cmap_base = cmap;
 960
 961                 /* Set color map */
 962                 for (i = 0; i < colors; ++i) {
 963                         bmp_color_table_entry_t cte = bmp->color_table[i];
 964 #if !defined(CONFIG_ATMEL_LCD)
 965                         ushort colreg =
 966                                 ( ((cte.red)   << 8) & 0xf800) |
 967                                 ( ((cte.green) << 3) & 0x07e0) |
 968                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 969 #ifdef CONFIG_SYS_INVERT_COLORS
 970                         *cmap = 0xffff - colreg;
 971 #else
 972                         *cmap = colreg;
 973 #endif
 974 #if defined(CONFIG_MPC823)
 975                         cmap--;
 976 #else
 977                         cmap++;
 978 #endif
 979 #else /* CONFIG_ATMEL_LCD */
 980                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 981 #endif
 982                 }
 983         }
 984
 985         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 986
 987 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 988         splash_align_axis(&x, pwidth, width);
 989         splash_align_axis(&y, panel_info.vl_row, height);
 990 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 991
 992         if ((x + width) > pwidth)
 993                 width = pwidth - x;
 994         if ((y + height) > panel_info.vl_row)
 995                 height = panel_info.vl_row - y;
 996
 997         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 998         fb   = (uchar *)(lcd_base +
 999                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1000
1001         switch (bmp_bpix) {
1002         case 1: /* pass through */
1003         case 8: {
1004 #ifdef CONFIG_LCD_BMP_RLE8
1005                 u32 compression = get_unaligned_le32(&bmp->header.compression);
1006                 if (compression == BMP_BI_RLE8) {
1007                         if (bpix != 16) {
1008                                 /* TODO implement render code for bpix != 16 */
1009                                 printf("Error: only support 16 bpix");
1010                                 return 1;
1011                         }
1012                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1013                         break;
1014                 }
1015 #endif
1016
1017                 if (bpix != 16)
1018                         byte_width = width;
1019                 else
1020                         byte_width = width * 2;
1021
1022                 for (i = 0; i < height; ++i) {
1023                         WATCHDOG_RESET();
1024                         for (j = 0; j < width; j++) {
1025                                 if (bpix != 16) {
1026                                         FB_PUT_BYTE(fb, bmap);
1027                                 } else {
1028                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1029                                         fb += sizeof(uint16_t) / sizeof(*fb);
1030                                 }
1031                         }
1032                         bmap += (padded_width - width);
1033                         fb -= byte_width + lcd_line_length;
1034                 }
1035                 break;
1036         }
1037 #if defined(CONFIG_BMP_16BPP)
1038         case 16:
1039                 for (i = 0; i < height; ++i) {
1040                         WATCHDOG_RESET();
1041                         for (j = 0; j < width; j++)
1042                                 fb_put_word(&fb, &bmap);
1043
1044                         bmap += (padded_width - width) * 2;
1045                         fb -= width * 2 + lcd_line_length;
1046                 }
1047                 break;
1048 #endif /* CONFIG_BMP_16BPP */
1049 #if defined(CONFIG_BMP_24BMP)
1050         case 24:
1051                 for (i = 0; i < height; ++i) {
1052                         for (j = 0; j < width; j++) {
1053                                 *(fb++) = *(bmap++);
1054                                 *(fb++) = *(bmap++);
1055                                 *(fb++) = *(bmap++);
1056                                 *(fb++) = 0;
1057                         }
1058                         fb -= lcd_line_length + width * (bpix / 8);
1059                 }
1060                 break;
1061 #endif /* CONFIG_BMP_24BMP */
1062 #if defined(CONFIG_BMP_32BPP)
1063         case 32:
1064                 for (i = 0; i < height; ++i) {
1065                         for (j = 0; j < width; j++) {
1066                                 *(fb++) = *(bmap++);
1067                                 *(fb++) = *(bmap++);
1068                                 *(fb++) = *(bmap++);
1069                                 *(fb++) = *(bmap++);
1070                         }
1071                         fb -= lcd_line_length + width * (bpix / 8);
1072                 }
1073                 break;
1074 #endif /* CONFIG_BMP_32BPP */
1075         default:
1076                 break;
1077         };
1078
1079         lcd_sync();
1080         return 0;
1081 }
1082 #endif
1083
1084 static void *lcd_logo(void)
1085 {
1086 #ifdef CONFIG_SPLASH_SCREEN
1087         char *s;
1088         ulong addr;
1089         static int do_splash = 1;
1090
1091         if (do_splash && (s = getenv("splashimage")) != NULL) {
1092                 int x = 0, y = 0;
1093                 do_splash = 0;
1094
1095                 if (splash_screen_prepare())
1096                         return (void *)lcd_base;
1097
1098                 addr = simple_strtoul (s, NULL, 16);
1099
1100                 splash_get_pos(&x, &y);
1101
1102                 if (bmp_display(addr, x, y) == 0)
1103                         return (void *)lcd_base;
1104         }
1105 #endif /* CONFIG_SPLASH_SCREEN */
1106
1107         bitmap_plot(0, 0);
1108
1109 #ifdef CONFIG_LCD_INFO
1110         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1111         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1112         lcd_show_board_info();
1113 #endif /* CONFIG_LCD_INFO */
1114
1115 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1116         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1117 #else
1118         return (void *)lcd_base;
1119 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1120 }
1121
1122 #ifdef CONFIG_SPLASHIMAGE_GUARD
1123 static int on_splashimage(const char *name, const char *value, enum env_op op,
1124         int flags)
1125 {
1126         ulong addr;
1127         int aligned;
1128
1129         if (op == env_op_delete)
1130                 return 0;
1131
1132         addr = simple_strtoul(value, NULL, 16);
1133         /* See README.displaying-bmps */
1134         aligned = (addr % 4 == 2);
1135         if (!aligned) {
1136                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1137                 return -1;
1138         }
1139
1140         return 0;
1141 }
1142
1143 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1144 #endif
1145
1146 void lcd_position_cursor(unsigned col, unsigned row)
1147 {
1148         console_col = min(col, CONSOLE_COLS - 1);
1149         console_row = min(row, CONSOLE_ROWS - 1);
1150 }
1151
1152 int lcd_get_pixel_width(void)
1153 {
1154         return panel_info.vl_col;
1155 }
1156
1157 int lcd_get_pixel_height(void)
1158 {
1159         return panel_info.vl_row;
1160 }
1161
1162 int lcd_get_screen_rows(void)
1163 {
1164         return CONSOLE_ROWS;
1165 }
1166
1167 int lcd_get_screen_columns(void)
1168 {
1169         return CONSOLE_COLS;
1170 }
1171
1172 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1173 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1174 {
1175         u32 stride;
1176         fdt32_t cells[2];
1177         int ret;
1178         static const char format[] =
1179 #if LCD_BPP == LCD_COLOR16
1180                 "r5g6b5";
1181 #else
1182                 "";
1183 #endif
1184
1185         if (!format[0])
1186                 return -1;
1187
1188         stride = panel_info.vl_col * 2;
1189
1190         cells[0] = cpu_to_fdt32(gd->fb_base);
1191         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1192         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1193         if (ret < 0)
1194                 return -1;
1195
1196         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1197         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1198         if (ret < 0)
1199                 return -1;
1200
1201         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1202         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1203         if (ret < 0)
1204                 return -1;
1205
1206         cells[0] = cpu_to_fdt32(stride);
1207         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1208         if (ret < 0)
1209                 return -1;
1210
1211         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1212         if (ret < 0)
1213                 return -1;
1214
1215         ret = fdt_delprop(blob, off, "status");
1216         if (ret < 0)
1217                 return -1;
1218
1219         return 0;
1220 }
1221
1222 int lcd_dt_simplefb_add_node(void *blob)
1223 {
1224         static const char compat[] = "simple-framebuffer";
1225         static const char disabled[] = "disabled";
1226         int off, ret;
1227
1228         off = fdt_add_subnode(blob, 0, "framebuffer");
1229         if (off < 0)
1230                 return -1;
1231
1232         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1233         if (ret < 0)
1234                 return -1;
1235
1236         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1237         if (ret < 0)
1238                 return -1;
1239
1240         return lcd_dt_simplefb_configure_node(blob, off);
1241 }
1242
1243 int lcd_dt_simplefb_enable_existing_node(void *blob)
1244 {
1245         int off;
1246
1247         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1248         if (off < 0)
1249                 return -1;
1250
1251         return lcd_dt_simplefb_configure_node(blob, off);
1252 }
1253 #endif