common/lcd.c

   1 /*
   2  * Common LCD routines for supported CPUs
   3  *
   4  * (C) Copyright 2001-2002
   5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 /************************************************************************/
  11 /* ** HEADER FILES                                                      */
  12 /************************************************************************/
  13
  14 /* #define DEBUG */
  15
  16 #include <config.h>
  17 #include <common.h>
  18 #include <command.h>
  19 #include <stdarg.h>
  20 #include <search.h>
  21 #include <env_callback.h>
  22 #include <linux/types.h>
  23 #include <stdio_dev.h>
  24 #if defined(CONFIG_POST)
  25 #include <post.h>
  26 #endif
  27 #include <lcd.h>
  28 #include <watchdog.h>
  29 #include <asm/unaligned.h>
  30 #include <splash.h>
  31 #include <asm/io.h>
  32 #include <asm/unaligned.h>
  33 #include <fdt_support.h>
  34
  35 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  36         defined(CONFIG_CPU_MONAHANS)
  37 #include <asm/byteorder.h>
  38 #endif
  39
  40 #if defined(CONFIG_MPC823)
  41 #include <lcdvideo.h>
  42 #endif
  43
  44 #if defined(CONFIG_ATMEL_LCD)
  45 #include <atmel_lcdc.h>
  46 #endif
  47
  48 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  49 #include <libfdt.h>
  50 #endif
  51
  52 /************************************************************************/
  53 /* ** FONT DATA                                                         */
  54 /************************************************************************/
  55 #include <video_font.h>         /* Get font data, width and height      */
  56
  57 /************************************************************************/
  58 /* ** LOGO DATA                                                         */
  59 /************************************************************************/
  60 #ifdef CONFIG_LCD_LOGO
  61 # include <bmp_logo.h>          /* Get logo data, width and height      */
  62 # include <bmp_logo_data.h>
  63 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  64 #  error Default Color Map overlaps with Logo Color Map
  65 # endif
  66 #endif
  67
  68 #ifdef CONFIG_SANDBOX
  69 #include <asm/sdl.h>
  70 #endif
  71
  72 #ifndef CONFIG_LCD_ALIGNMENT
  73 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  74 #endif
  75
  76 /* By default we scroll by a single line */
  77 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  78 #define CONFIG_CONSOLE_SCROLL_LINES 1
  79 #endif
  80
  81 /************************************************************************/
  82 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  83 /************************************************************************/
  84 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  85 #define CONSOLE_ROW_FIRST       lcd_console_address
  86 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  87 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  88                                         - CONSOLE_ROW_SIZE)
  89 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * console_rows)
  90 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  91
  92 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  93         (LCD_BPP != LCD_COLOR32)
  94 # error Unsupported LCD BPP.
  95 #endif
  96
  97 DECLARE_GLOBAL_DATA_PTR;
  98
  99 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 100 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 101
 102 static int lcd_init(void *lcdbase);
 103
 104 static void *lcd_logo(void);
 105
 106 static void lcd_setfgcolor(int color);
 107 static void lcd_setbgcolor(int color);
 108
 109 static int lcd_color_fg;
 110 static int lcd_color_bg;
 111 int lcd_line_length;
 112
 113 char lcd_is_enabled = 0;
 114
 115 static short console_curr_col;
 116 static short console_curr_row;
 117 static short console_cols;
 118 static short console_rows;
 119
 120 static void *lcd_console_address;
 121 static void *lcd_base;                  /* Start of framebuffer memory  */
 122
 123 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 124
 125 /************************************************************************/
 126
 127 /* Flush LCD activity to the caches */
 128 void lcd_sync(void)
 129 {
 130         /*
 131          * flush_dcache_range() is declared in common.h but it seems that some
 132          * architectures do not actually implement it. Is there a way to find
 133          * out whether it exists? For now, ARM is safe.
 134          */
 135 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 136         int line_length;
 137
 138         if (lcd_flush_dcache)
 139                 flush_dcache_range((u32)lcd_base,
 140                         (u32)(lcd_base + lcd_get_size(&line_length)));
 141 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 142         static ulong last_sync;
 143
 144         if (get_timer(last_sync) > 10) {
 145                 sandbox_sdl_sync(lcd_base);
 146                 last_sync = get_timer(0);
 147         }
 148 #endif
 149 }
 150
 151 void lcd_set_flush_dcache(int flush)
 152 {
 153         lcd_flush_dcache = (flush != 0);
 154 }
 155
 156 void lcd_init_console(void *address, int rows, int cols)
 157 {
 158         console_curr_col = 0;
 159         console_curr_row = 0;
 160         console_cols = cols;
 161         console_rows = rows;
 162         lcd_console_address = address;
 163 }
 164
 165 void lcd_set_col(short col)
 166 {
 167         console_curr_col = col;
 168 }
 169
 170 void lcd_set_row(short row)
 171 {
 172         console_curr_row = row;
 173 }
 174
 175 /*----------------------------------------------------------------------*/
 176
 177 static void console_scrollup(void)
 178 {
 179         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 180
 181         /* Copy up rows ignoring those that will be overwritten */
 182         memcpy(CONSOLE_ROW_FIRST,
 183                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 184                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 185
 186         /* Clear the last rows */
 187 #if (LCD_BPP != LCD_COLOR32)
 188         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 189                 lcd_color_bg,
 190                 CONSOLE_ROW_SIZE * rows);
 191 #else
 192         u32 *ppix = lcd_console_address +
 193                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
 194         u32 i;
 195         for (i = 0;
 196             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
 197             i++) {
 198                 *ppix++ = lcd_color_bg;
 199         }
 200 #endif
 201         lcd_sync();
 202         console_curr_row -= rows;
 203 }
 204
 205 /*----------------------------------------------------------------------*/
 206
 207 static inline void console_back(void)
 208 {
 209         if (--console_curr_col < 0) {
 210                 console_curr_col = console_cols - 1;
 211                 if (--console_curr_row < 0)
 212                         console_curr_row = 0;
 213         }
 214
 215         lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH,
 216                     console_curr_row * VIDEO_FONT_HEIGHT, ' ');
 217 }
 218
 219 /*----------------------------------------------------------------------*/
 220
 221 static inline void console_newline(void)
 222 {
 223         console_curr_col = 0;
 224
 225         /* Check if we need to scroll the terminal */
 226         if (++console_curr_row >= console_rows)
 227                 console_scrollup();
 228         else
 229                 lcd_sync();
 230 }
 231
 232 /*----------------------------------------------------------------------*/
 233
 234 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 235 {
 236         lcd_putc(c);
 237 }
 238
 239 void lcd_putc(const char c)
 240 {
 241         if (!lcd_is_enabled) {
 242                 serial_putc(c);
 243
 244                 return;
 245         }
 246
 247         switch (c) {
 248         case '\r':
 249                 console_curr_col = 0;
 250
 251                 return;
 252         case '\n':
 253                 console_newline();
 254
 255                 return;
 256         case '\t':      /* Tab (8 chars alignment) */
 257                 console_curr_col +=  8;
 258                 console_curr_col &= ~7;
 259
 260                 if (console_curr_col >= console_cols)
 261                         console_newline();
 262
 263                 return;
 264         case '\b':
 265                 console_back();
 266
 267                 return;
 268         default:
 269                 lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH,
 270                             console_curr_row * VIDEO_FONT_HEIGHT, c);
 271                 if (++console_curr_col >= console_cols)
 272                         console_newline();
 273         }
 274 }
 275
 276 /*----------------------------------------------------------------------*/
 277
 278 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 279 {
 280         lcd_puts(s);
 281 }
 282
 283 void lcd_puts(const char *s)
 284 {
 285         if (!lcd_is_enabled) {
 286                 serial_puts(s);
 287
 288                 return;
 289         }
 290
 291         while (*s)
 292                 lcd_putc(*s++);
 293
 294         lcd_sync();
 295 }
 296
 297 /*----------------------------------------------------------------------*/
 298
 299 void lcd_printf(const char *fmt, ...)
 300 {
 301         va_list args;
 302         char buf[CONFIG_SYS_PBSIZE];
 303
 304         va_start(args, fmt);
 305         vsprintf(buf, fmt, args);
 306         va_end(args);
 307
 308         lcd_puts(buf);
 309 }
 310
 311 /************************************************************************/
 312 /* ** Low-Level Graphics Routines                                       */
 313 /************************************************************************/
 314
 315 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 316 {
 317         uchar *dest;
 318         ushort row;
 319
 320 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 321         y += BMP_LOGO_HEIGHT;
 322 #endif
 323
 324         dest = (uchar *)(lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP)/8);
 325
 326         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 327                 uchar *s = str;
 328                 int i;
 329 #if LCD_BPP == LCD_COLOR16
 330                 ushort *d = (ushort *)dest;
 331 #elif LCD_BPP == LCD_COLOR32
 332                 u32 *d = (u32 *)dest;
 333 #else
 334                 uchar *d = dest;
 335 #endif
 336
 337                 for (i = 0; i < count; ++i) {
 338                         uchar c, bits;
 339
 340                         c = *s++;
 341                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 342
 343                         for (c = 0; c < 8; ++c) {
 344                                 *d++ = (bits & 0x80) ?
 345                                                 lcd_color_fg : lcd_color_bg;
 346                                 bits <<= 1;
 347                         }
 348                 }
 349         }
 350 }
 351
 352 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 353 {
 354         lcd_drawchars(x, y, &c, 1);
 355 }
 356
 357 /************************************************************************/
 358 /**  Small utility to check that you got the colours right              */
 359 /************************************************************************/
 360 #ifdef LCD_TEST_PATTERN
 361
 362 #define N_BLK_VERT      2
 363 #define N_BLK_HOR       3
 364
 365 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 366         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 367         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 368 };
 369
 370 static void test_pattern(void)
 371 {
 372         ushort v_max  = panel_info.vl_row;
 373         ushort h_max  = panel_info.vl_col;
 374         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 375         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 376         ushort v, h;
 377         uchar *pix = (uchar *)lcd_base;
 378
 379         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 380                 h_max, v_max, h_step, v_step);
 381
 382         /* WARNING: Code silently assumes 8bit/pixel */
 383         for (v = 0; v < v_max; ++v) {
 384                 uchar iy = v / v_step;
 385                 for (h = 0; h < h_max; ++h) {
 386                         uchar ix = N_BLK_HOR * iy + h / h_step;
 387                         *pix++ = test_colors[ix];
 388                 }
 389         }
 390 }
 391 #endif /* LCD_TEST_PATTERN */
 392
 393
 394 /************************************************************************/
 395 /* ** GENERIC Initialization Routines                                   */
 396 /************************************************************************/
 397 /*
 398  * With most lcd drivers the line length is set up
 399  * by calculating it from panel_info parameters. Some
 400  * drivers need to calculate the line length differently,
 401  * so make the function weak to allow overriding it.
 402  */
 403 __weak int lcd_get_size(int *line_length)
 404 {
 405         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 406         return *line_length * panel_info.vl_row;
 407 }
 408
 409 int drv_lcd_init(void)
 410 {
 411         struct stdio_dev lcddev;
 412         int rc;
 413
 414         lcd_base = map_sysmem(gd->fb_base, 0);
 415
 416         lcd_init(lcd_base);             /* LCD initialization */
 417
 418         /* Device initialization */
 419         memset(&lcddev, 0, sizeof(lcddev));
 420
 421         strcpy(lcddev.name, "lcd");
 422         lcddev.ext   = 0;                       /* No extensions */
 423         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 424         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 425         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 426
 427         rc = stdio_register(&lcddev);
 428
 429         return (rc == 0) ? 1 : rc;
 430 }
 431
 432 /*----------------------------------------------------------------------*/
 433 void lcd_clear(void)
 434 {
 435         short console_rows, console_cols;
 436 #if LCD_BPP == LCD_COLOR8
 437         /* Setting the palette */
 438         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 439         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 440         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 441         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 442         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 443         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 444         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 445         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 446         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 447 #endif
 448
 449 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 450         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 451         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 452 #else
 453         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 454         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 455 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 456
 457 #ifdef  LCD_TEST_PATTERN
 458         test_pattern();
 459 #else
 460         /* set framebuffer to background color */
 461 #if (LCD_BPP != LCD_COLOR32)
 462         memset((char *)lcd_base,
 463                 lcd_color_bg,
 464                 lcd_line_length * panel_info.vl_row);
 465 #else
 466         u32 *ppix = lcd_base;
 467         u32 i;
 468         for (i = 0;
 469            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 470            i++) {
 471                 *ppix++ = lcd_color_bg;
 472         }
 473 #endif
 474 #endif
 475         /* Paint the logo and retrieve LCD base address */
 476         debug("[LCD] Drawing the logo...\n");
 477 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 478         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 479         console_rows /= VIDEO_FONT_HEIGHT;
 480 #else
 481         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 482 #endif
 483         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 484         lcd_init_console(lcd_logo(), console_rows, console_cols);
 485         lcd_sync();
 486 }
 487
 488 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 489                         char *const argv[])
 490 {
 491         lcd_clear();
 492         return 0;
 493 }
 494
 495 U_BOOT_CMD(
 496         cls,    1,      1,      do_lcd_clear,
 497         "clear screen",
 498         ""
 499 );
 500
 501 /*----------------------------------------------------------------------*/
 502
 503 static int lcd_init(void *lcdbase)
 504 {
 505         /* Initialize the lcd controller */
 506         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 507
 508         lcd_ctrl_init(lcdbase);
 509
 510         /*
 511          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 512          * the 'lcdbase' argument and uses custom lcd base address
 513          * by setting up gd->fb_base. Check for this condition and fixup
 514          * 'lcd_base' address.
 515          */
 516         if (map_to_sysmem(lcdbase) != gd->fb_base)
 517                 lcd_base = map_sysmem(gd->fb_base, 0);
 518
 519         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 520
 521         lcd_get_size(&lcd_line_length);
 522         lcd_is_enabled = 1;
 523         lcd_clear();
 524         lcd_enable();
 525
 526         /* Initialize the console */
 527         lcd_set_col(0);
 528 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 529         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 530 #else
 531         lcd_set_row(1); /* leave 1 blank line below logo */
 532 #endif
 533
 534         return 0;
 535 }
 536
 537
 538 /************************************************************************/
 539 /* ** ROM capable initialization part - needed to reserve FB memory     */
 540 /************************************************************************/
 541 /*
 542  * This is called early in the system initialization to grab memory
 543  * for the LCD controller.
 544  * Returns new address for monitor, after reserving LCD buffer memory
 545  *
 546  * Note that this is running from ROM, so no write access to global data.
 547  */
 548 ulong lcd_setmem(ulong addr)
 549 {
 550         ulong size;
 551         int line_length;
 552
 553         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 554                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 555
 556         size = lcd_get_size(&line_length);
 557
 558         /* Round up to nearest full page, or MMU section if defined */
 559         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 560         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 561
 562         /* Allocate pages for the frame buffer. */
 563         addr -= size;
 564
 565         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 566               size >> 10, addr);
 567
 568         return addr;
 569 }
 570
 571 /*----------------------------------------------------------------------*/
 572
 573 static void lcd_setfgcolor(int color)
 574 {
 575         lcd_color_fg = color;
 576 }
 577
 578 /*----------------------------------------------------------------------*/
 579
 580 static void lcd_setbgcolor(int color)
 581 {
 582         lcd_color_bg = color;
 583 }
 584
 585 /************************************************************************/
 586 /* ** Chipset depending Bitmap / Logo stuff...                          */
 587 /************************************************************************/
 588 static inline ushort *configuration_get_cmap(void)
 589 {
 590 #if defined CONFIG_CPU_PXA
 591         struct pxafb_info *fbi = &panel_info.pxa;
 592         return (ushort *)fbi->palette;
 593 #elif defined(CONFIG_MPC823)
 594         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 595         cpm8xx_t *cp = &(immr->im_cpm);
 596         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 597 #elif defined(CONFIG_ATMEL_LCD)
 598         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 599 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 600         return panel_info.cmap;
 601 #elif defined(CONFIG_LCD_LOGO)
 602         return bmp_logo_palette;
 603 #else
 604         return NULL;
 605 #endif
 606 }
 607
 608 #ifdef CONFIG_LCD_LOGO
 609 void bitmap_plot(int x, int y)
 610 {
 611 #ifdef CONFIG_ATMEL_LCD
 612         uint *cmap = (uint *)bmp_logo_palette;
 613 #else
 614         ushort *cmap = (ushort *)bmp_logo_palette;
 615 #endif
 616         ushort i, j;
 617         uchar *bmap;
 618         uchar *fb;
 619         ushort *fb16;
 620 #if defined(CONFIG_MPC823)
 621         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 622         cpm8xx_t *cp = &(immr->im_cpm);
 623 #endif
 624         unsigned bpix = NBITS(panel_info.vl_bpix);
 625
 626         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 627                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 628                 ARRAY_SIZE(bmp_logo_palette));
 629
 630         bmap = &bmp_logo_bitmap[0];
 631         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 632
 633         if (bpix < 12) {
 634                 /* Leave room for default color map
 635                  * default case: generic system with no cmap (most likely 16bpp)
 636                  * cmap was set to the source palette, so no change is done.
 637                  * This avoids even more ifdefs in the next stanza
 638                  */
 639 #if defined(CONFIG_MPC823)
 640                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 641 #elif defined(CONFIG_ATMEL_LCD)
 642                 cmap = (uint *)configuration_get_cmap();
 643 #else
 644                 cmap = configuration_get_cmap();
 645 #endif
 646
 647                 WATCHDOG_RESET();
 648
 649                 /* Set color map */
 650                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 651                         ushort colreg = bmp_logo_palette[i];
 652 #ifdef CONFIG_ATMEL_LCD
 653                         uint lut_entry;
 654 #ifdef CONFIG_ATMEL_LCD_BGR555
 655                         lut_entry = ((colreg & 0x000F) << 11) |
 656                                         ((colreg & 0x00F0) <<  2) |
 657                                         ((colreg & 0x0F00) >>  7);
 658 #else /* CONFIG_ATMEL_LCD_RGB565 */
 659                         lut_entry = ((colreg & 0x000F) << 1) |
 660                                         ((colreg & 0x00F0) << 3) |
 661                                         ((colreg & 0x0F00) << 4);
 662 #endif
 663                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 664                         cmap++;
 665 #else /* !CONFIG_ATMEL_LCD */
 666                         *cmap++ = colreg;
 667 #endif /* CONFIG_ATMEL_LCD */
 668                 }
 669
 670                 WATCHDOG_RESET();
 671
 672                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 673                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 674                         bmap += BMP_LOGO_WIDTH;
 675                         fb += panel_info.vl_col;
 676                 }
 677         }
 678         else { /* true color mode */
 679                 u16 col16;
 680                 fb16 = (ushort *)fb;
 681                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 682                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 683                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 684                                 fb16[j] =
 685                                         ((col16 & 0x000F) << 1) |
 686                                         ((col16 & 0x00F0) << 3) |
 687                                         ((col16 & 0x0F00) << 4);
 688                                 }
 689                         bmap += BMP_LOGO_WIDTH;
 690                         fb16 += panel_info.vl_col;
 691                 }
 692         }
 693
 694         WATCHDOG_RESET();
 695         lcd_sync();
 696 }
 697 #else
 698 static inline void bitmap_plot(int x, int y) {}
 699 #endif /* CONFIG_LCD_LOGO */
 700
 701 /*----------------------------------------------------------------------*/
 702 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 703 /*
 704  * Display the BMP file located at address bmp_image.
 705  * Only uncompressed.
 706  */
 707
 708 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 709 #define BMP_ALIGN_CENTER        0x7FFF
 710
 711 static void splash_align_axis(int *axis, unsigned long panel_size,
 712                                         unsigned long picture_size)
 713 {
 714         unsigned long panel_picture_delta = panel_size - picture_size;
 715         unsigned long axis_alignment;
 716
 717         if (*axis == BMP_ALIGN_CENTER)
 718                 axis_alignment = panel_picture_delta / 2;
 719         else if (*axis < 0)
 720                 axis_alignment = panel_picture_delta + *axis + 1;
 721         else
 722                 return;
 723
 724         *axis = max(0, (int)axis_alignment);
 725 }
 726 #endif
 727
 728
 729 #ifdef CONFIG_LCD_BMP_RLE8
 730
 731 #define BMP_RLE8_ESCAPE         0
 732 #define BMP_RLE8_EOL            0
 733 #define BMP_RLE8_EOBMP          1
 734 #define BMP_RLE8_DELTA          2
 735
 736 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 737                                   int cnt)
 738 {
 739         while (cnt > 0) {
 740                 *(*fbp)++ = cmap[*bmap++];
 741                 cnt--;
 742         }
 743 }
 744
 745 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 746 {
 747         ushort *fb = *fbp;
 748         int cnt_8copy = cnt >> 3;
 749
 750         cnt -= cnt_8copy << 3;
 751         while (cnt_8copy > 0) {
 752                 *fb++ = c;
 753                 *fb++ = c;
 754                 *fb++ = c;
 755                 *fb++ = c;
 756                 *fb++ = c;
 757                 *fb++ = c;
 758                 *fb++ = c;
 759                 *fb++ = c;
 760                 cnt_8copy--;
 761         }
 762         while (cnt > 0) {
 763                 *fb++ = c;
 764                 cnt--;
 765         }
 766         *fbp = fb;
 767 }
 768
 769 /*
 770  * Do not call this function directly, must be called from lcd_display_bitmap.
 771  */
 772 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 773                                     int x_off, int y_off)
 774 {
 775         uchar *bmap;
 776         ulong width, height;
 777         ulong cnt, runlen;
 778         int x, y;
 779         int decode = 1;
 780
 781         width = get_unaligned_le32(&bmp->header.width);
 782         height = get_unaligned_le32(&bmp->header.height);
 783         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 784
 785         x = 0;
 786         y = height - 1;
 787
 788         while (decode) {
 789                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 790                         switch (bmap[1]) {
 791                         case BMP_RLE8_EOL:
 792                                 /* end of line */
 793                                 bmap += 2;
 794                                 x = 0;
 795                                 y--;
 796                                 /* 16bpix, 2-byte per pixel, width should *2 */
 797                                 fb -= (width * 2 + lcd_line_length);
 798                                 break;
 799                         case BMP_RLE8_EOBMP:
 800                                 /* end of bitmap */
 801                                 decode = 0;
 802                                 break;
 803                         case BMP_RLE8_DELTA:
 804                                 /* delta run */
 805                                 x += bmap[2];
 806                                 y -= bmap[3];
 807                                 /* 16bpix, 2-byte per pixel, x should *2 */
 808                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 809                                         * lcd_line_length + (x + x_off) * 2);
 810                                 bmap += 4;
 811                                 break;
 812                         default:
 813                                 /* unencoded run */
 814                                 runlen = bmap[1];
 815                                 bmap += 2;
 816                                 if (y < height) {
 817                                         if (x < width) {
 818                                                 if (x + runlen > width)
 819                                                         cnt = width - x;
 820                                                 else
 821                                                         cnt = runlen;
 822                                                 draw_unencoded_bitmap(
 823                                                         (ushort **)&fb,
 824                                                         bmap, cmap, cnt);
 825                                         }
 826                                         x += runlen;
 827                                 }
 828                                 bmap += runlen;
 829                                 if (runlen & 1)
 830                                         bmap++;
 831                         }
 832                 } else {
 833                         /* encoded run */
 834                         if (y < height) {
 835                                 runlen = bmap[0];
 836                                 if (x < width) {
 837                                         /* aggregate the same code */
 838                                         while (bmap[0] == 0xff &&
 839                                                bmap[2] != BMP_RLE8_ESCAPE &&
 840                                                bmap[1] == bmap[3]) {
 841                                                 runlen += bmap[2];
 842                                                 bmap += 2;
 843                                         }
 844                                         if (x + runlen > width)
 845                                                 cnt = width - x;
 846                                         else
 847                                                 cnt = runlen;
 848                                         draw_encoded_bitmap((ushort **)&fb,
 849                                                 cmap[bmap[1]], cnt);
 850                                 }
 851                                 x += runlen;
 852                         }
 853                         bmap += 2;
 854                 }
 855         }
 856 }
 857 #endif
 858
 859 #if defined(CONFIG_MPC823)
 860 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 861 #else
 862 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 863 #endif
 864
 865 #if defined(CONFIG_BMP_16BPP)
 866 #if defined(CONFIG_ATMEL_LCD_BGR555)
 867 static inline void fb_put_word(uchar **fb, uchar **from)
 868 {
 869         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 870         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 871         *from += 2;
 872 }
 873 #else
 874 static inline void fb_put_word(uchar **fb, uchar **from)
 875 {
 876         *(*fb)++ = *(*from)++;
 877         *(*fb)++ = *(*from)++;
 878 }
 879 #endif
 880 #endif /* CONFIG_BMP_16BPP */
 881
 882 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 883 {
 884         ushort *cmap = NULL;
 885         ushort *cmap_base = NULL;
 886         ushort i, j;
 887         uchar *fb;
 888         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 889         uchar *bmap;
 890         ushort padded_width;
 891         unsigned long width, height, byte_width;
 892         unsigned long pwidth = panel_info.vl_col;
 893         unsigned colors, bpix, bmp_bpix;
 894
 895         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 896                 bmp->header.signature[1] == 'M')) {
 897                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 898
 899                 return 1;
 900         }
 901
 902         width = get_unaligned_le32(&bmp->header.width);
 903         height = get_unaligned_le32(&bmp->header.height);
 904         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 905
 906         colors = 1 << bmp_bpix;
 907
 908         bpix = NBITS(panel_info.vl_bpix);
 909
 910         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 911                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 912                         bpix, bmp_bpix);
 913
 914                 return 1;
 915         }
 916
 917         /*
 918          * We support displaying 8bpp BMPs on 16bpp LCDs
 919          * and displaying 24bpp BMPs on 32bpp LCDs
 920          * */
 921         if (bpix != bmp_bpix &&
 922             !(bmp_bpix == 8 && bpix == 16) &&
 923             !(bmp_bpix == 24 && bpix == 32)) {
 924                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 925                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 926                 return 1;
 927         }
 928
 929         debug("Display-bmp: %d x %d  with %d colors\n",
 930                 (int)width, (int)height, (int)colors);
 931
 932         if (bmp_bpix == 8) {
 933                 cmap = configuration_get_cmap();
 934                 cmap_base = cmap;
 935
 936                 /* Set color map */
 937                 for (i = 0; i < colors; ++i) {
 938                         bmp_color_table_entry_t cte = bmp->color_table[i];
 939 #if !defined(CONFIG_ATMEL_LCD)
 940                         ushort colreg =
 941                                 ( ((cte.red)   << 8) & 0xf800) |
 942                                 ( ((cte.green) << 3) & 0x07e0) |
 943                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 944                         *cmap = colreg;
 945 #if defined(CONFIG_MPC823)
 946                         cmap--;
 947 #else
 948                         cmap++;
 949 #endif
 950 #else /* CONFIG_ATMEL_LCD */
 951                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 952 #endif
 953                 }
 954         }
 955
 956         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 957
 958 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 959         splash_align_axis(&x, pwidth, width);
 960         splash_align_axis(&y, panel_info.vl_row, height);
 961 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 962
 963         if ((x + width) > pwidth)
 964                 width = pwidth - x;
 965         if ((y + height) > panel_info.vl_row)
 966                 height = panel_info.vl_row - y;
 967
 968         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 969         fb   = (uchar *)(lcd_base +
 970                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 971
 972         switch (bmp_bpix) {
 973         case 1: /* pass through */
 974         case 8: {
 975 #ifdef CONFIG_LCD_BMP_RLE8
 976                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 977                 if (compression == BMP_BI_RLE8) {
 978                         if (bpix != 16) {
 979                                 /* TODO implement render code for bpix != 16 */
 980                                 printf("Error: only support 16 bpix");
 981                                 return 1;
 982                         }
 983                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 984                         break;
 985                 }
 986 #endif
 987
 988                 if (bpix != 16)
 989                         byte_width = width;
 990                 else
 991                         byte_width = width * 2;
 992
 993                 for (i = 0; i < height; ++i) {
 994                         WATCHDOG_RESET();
 995                         for (j = 0; j < width; j++) {
 996                                 if (bpix != 16) {
 997                                         FB_PUT_BYTE(fb, bmap);
 998                                 } else {
 999                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1000                                         fb += sizeof(uint16_t) / sizeof(*fb);
1001                                 }
1002                         }
1003                         bmap += (padded_width - width);
1004                         fb -= byte_width + lcd_line_length;
1005                 }
1006                 break;
1007         }
1008 #if defined(CONFIG_BMP_16BPP)
1009         case 16:
1010                 for (i = 0; i < height; ++i) {
1011                         WATCHDOG_RESET();
1012                         for (j = 0; j < width; j++)
1013                                 fb_put_word(&fb, &bmap);
1014
1015                         bmap += (padded_width - width) * 2;
1016                         fb -= width * 2 + lcd_line_length;
1017                 }
1018                 break;
1019 #endif /* CONFIG_BMP_16BPP */
1020 #if defined(CONFIG_BMP_24BMP)
1021         case 24:
1022                 for (i = 0; i < height; ++i) {
1023                         for (j = 0; j < width; j++) {
1024                                 *(fb++) = *(bmap++);
1025                                 *(fb++) = *(bmap++);
1026                                 *(fb++) = *(bmap++);
1027                                 *(fb++) = 0;
1028                         }
1029                         fb -= lcd_line_length + width * (bpix / 8);
1030                 }
1031                 break;
1032 #endif /* CONFIG_BMP_24BMP */
1033 #if defined(CONFIG_BMP_32BPP)
1034         case 32:
1035                 for (i = 0; i < height; ++i) {
1036                         for (j = 0; j < width; j++) {
1037                                 *(fb++) = *(bmap++);
1038                                 *(fb++) = *(bmap++);
1039                                 *(fb++) = *(bmap++);
1040                                 *(fb++) = *(bmap++);
1041                         }
1042                         fb -= lcd_line_length + width * (bpix / 8);
1043                 }
1044                 break;
1045 #endif /* CONFIG_BMP_32BPP */
1046         default:
1047                 break;
1048         };
1049
1050         lcd_sync();
1051         return 0;
1052 }
1053 #endif
1054
1055 static void *lcd_logo(void)
1056 {
1057 #ifdef CONFIG_SPLASH_SCREEN
1058         char *s;
1059         ulong addr;
1060         static int do_splash = 1;
1061
1062         if (do_splash && (s = getenv("splashimage")) != NULL) {
1063                 int x = 0, y = 0;
1064                 do_splash = 0;
1065
1066                 if (splash_screen_prepare())
1067                         return (void *)lcd_base;
1068
1069                 addr = simple_strtoul (s, NULL, 16);
1070
1071                 splash_get_pos(&x, &y);
1072
1073                 if (bmp_display(addr, x, y) == 0)
1074                         return (void *)lcd_base;
1075         }
1076 #endif /* CONFIG_SPLASH_SCREEN */
1077
1078         bitmap_plot(0, 0);
1079
1080 #ifdef CONFIG_LCD_INFO
1081         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
1082         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
1083         lcd_show_board_info();
1084 #endif /* CONFIG_LCD_INFO */
1085
1086 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1087         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1088 #else
1089         return (void *)lcd_base;
1090 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1091 }
1092
1093 #ifdef CONFIG_SPLASHIMAGE_GUARD
1094 static int on_splashimage(const char *name, const char *value, enum env_op op,
1095         int flags)
1096 {
1097         ulong addr;
1098         int aligned;
1099
1100         if (op == env_op_delete)
1101                 return 0;
1102
1103         addr = simple_strtoul(value, NULL, 16);
1104         /* See README.displaying-bmps */
1105         aligned = (addr % 4 == 2);
1106         if (!aligned) {
1107                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1108                 return -1;
1109         }
1110
1111         return 0;
1112 }
1113
1114 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1115 #endif
1116
1117 void lcd_position_cursor(unsigned col, unsigned row)
1118 {
1119         console_curr_col = min_t(short, col, console_cols - 1);
1120         console_curr_row = min_t(short, row, console_rows - 1);
1121 }
1122
1123 int lcd_get_pixel_width(void)
1124 {
1125         return panel_info.vl_col;
1126 }
1127
1128 int lcd_get_pixel_height(void)
1129 {
1130         return panel_info.vl_row;
1131 }
1132
1133 int lcd_get_screen_rows(void)
1134 {
1135         return console_rows;
1136 }
1137
1138 int lcd_get_screen_columns(void)
1139 {
1140         return console_cols;
1141 }
1142
1143 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1144 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1145 {
1146 #if LCD_BPP == LCD_COLOR16
1147         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1148                                        panel_info.vl_col, panel_info.vl_row,
1149                                        panel_info.vl_col * 2, "r5g6b5");
1150 #else
1151         return -1;
1152 #endif
1153 }
1154
1155 int lcd_dt_simplefb_add_node(void *blob)
1156 {
1157         static const char compat[] = "simple-framebuffer";
1158         static const char disabled[] = "disabled";
1159         int off, ret;
1160
1161         off = fdt_add_subnode(blob, 0, "framebuffer");
1162         if (off < 0)
1163                 return -1;
1164
1165         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1166         if (ret < 0)
1167                 return -1;
1168
1169         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1170         if (ret < 0)
1171                 return -1;
1172
1173         return lcd_dt_simplefb_configure_node(blob, off);
1174 }
1175
1176 int lcd_dt_simplefb_enable_existing_node(void *blob)
1177 {
1178         int off;
1179
1180         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1181         if (off < 0)
1182                 return -1;
1183
1184         return lcd_dt_simplefb_configure_node(blob, off);
1185 }
1186 #endif