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         int bg_color = lcd_getbgcolor();
 181
 182         /* Copy up rows ignoring those that will be overwritten */
 183         memcpy(CONSOLE_ROW_FIRST,
 184                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 185                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 186
 187         /* Clear the last rows */
 188 #if (LCD_BPP != LCD_COLOR32)
 189         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 190                bg_color, 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++ = bg_color;
 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         int fg_color, bg_color;
 320
 321 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 322         y += BMP_LOGO_HEIGHT;
 323 #endif
 324
 325         dest = (uchar *)(lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP)/8);
 326
 327         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 328                 uchar *s = str;
 329                 int i;
 330 #if LCD_BPP == LCD_COLOR16
 331                 ushort *d = (ushort *)dest;
 332 #elif LCD_BPP == LCD_COLOR32
 333                 u32 *d = (u32 *)dest;
 334 #else
 335                 uchar *d = dest;
 336 #endif
 337
 338                 fg_color = lcd_getfgcolor();
 339                 bg_color = lcd_getbgcolor();
 340                 for (i = 0; i < count; ++i) {
 341                         uchar c, bits;
 342
 343                         c = *s++;
 344                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 345
 346                         for (c = 0; c < 8; ++c) {
 347                                 *d++ = (bits & 0x80) ? fg_color : bg_color;
 348                                 bits <<= 1;
 349                         }
 350                 }
 351         }
 352 }
 353
 354 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 355 {
 356         lcd_drawchars(x, y, &c, 1);
 357 }
 358
 359 /************************************************************************/
 360 /**  Small utility to check that you got the colours right              */
 361 /************************************************************************/
 362 #ifdef LCD_TEST_PATTERN
 363
 364 #define N_BLK_VERT      2
 365 #define N_BLK_HOR       3
 366
 367 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 368         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 369         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 370 };
 371
 372 static void test_pattern(void)
 373 {
 374         ushort v_max  = panel_info.vl_row;
 375         ushort h_max  = panel_info.vl_col;
 376         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 377         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 378         ushort v, h;
 379         uchar *pix = (uchar *)lcd_base;
 380
 381         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 382                 h_max, v_max, h_step, v_step);
 383
 384         /* WARNING: Code silently assumes 8bit/pixel */
 385         for (v = 0; v < v_max; ++v) {
 386                 uchar iy = v / v_step;
 387                 for (h = 0; h < h_max; ++h) {
 388                         uchar ix = N_BLK_HOR * iy + h / h_step;
 389                         *pix++ = test_colors[ix];
 390                 }
 391         }
 392 }
 393 #endif /* LCD_TEST_PATTERN */
 394
 395
 396 /************************************************************************/
 397 /* ** GENERIC Initialization Routines                                   */
 398 /************************************************************************/
 399 /*
 400  * With most lcd drivers the line length is set up
 401  * by calculating it from panel_info parameters. Some
 402  * drivers need to calculate the line length differently,
 403  * so make the function weak to allow overriding it.
 404  */
 405 __weak int lcd_get_size(int *line_length)
 406 {
 407         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 408         return *line_length * panel_info.vl_row;
 409 }
 410
 411 int drv_lcd_init(void)
 412 {
 413         struct stdio_dev lcddev;
 414         int rc;
 415
 416         lcd_base = map_sysmem(gd->fb_base, 0);
 417
 418         lcd_init(lcd_base);             /* LCD initialization */
 419
 420         /* Device initialization */
 421         memset(&lcddev, 0, sizeof(lcddev));
 422
 423         strcpy(lcddev.name, "lcd");
 424         lcddev.ext   = 0;                       /* No extensions */
 425         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 426         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 427         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 428
 429         rc = stdio_register(&lcddev);
 430
 431         return (rc == 0) ? 1 : rc;
 432 }
 433
 434 /*----------------------------------------------------------------------*/
 435 void lcd_clear(void)
 436 {
 437         short console_rows, console_cols;
 438         int bg_color;
 439 #if LCD_BPP == LCD_COLOR8
 440         /* Setting the palette */
 441         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 442         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 443         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 444         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 445         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 446         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 447         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 448         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 449         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 450 #endif
 451
 452 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 453         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 454         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 455         bg_color = CONSOLE_COLOR_WHITE;
 456 #else
 457         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 458         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 459         bg_color = CONSOLE_COLOR_BLACK;
 460 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 461
 462 #ifdef  LCD_TEST_PATTERN
 463         test_pattern();
 464 #else
 465         /* set framebuffer to background color */
 466 #if (LCD_BPP != LCD_COLOR32)
 467         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 468 #else
 469         u32 *ppix = lcd_base;
 470         u32 i;
 471         for (i = 0;
 472            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 473            i++) {
 474                 *ppix++ = bg_color;
 475         }
 476 #endif
 477 #endif
 478         /* Paint the logo and retrieve LCD base address */
 479         debug("[LCD] Drawing the logo...\n");
 480 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 481         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 482         console_rows /= VIDEO_FONT_HEIGHT;
 483 #else
 484         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 485 #endif
 486         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 487         lcd_init_console(lcd_logo(), console_rows, console_cols);
 488         lcd_sync();
 489 }
 490
 491 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 492                         char *const argv[])
 493 {
 494         lcd_clear();
 495         return 0;
 496 }
 497
 498 U_BOOT_CMD(
 499         cls,    1,      1,      do_lcd_clear,
 500         "clear screen",
 501         ""
 502 );
 503
 504 /*----------------------------------------------------------------------*/
 505
 506 static int lcd_init(void *lcdbase)
 507 {
 508         /* Initialize the lcd controller */
 509         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 510
 511         lcd_ctrl_init(lcdbase);
 512
 513         /*
 514          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 515          * the 'lcdbase' argument and uses custom lcd base address
 516          * by setting up gd->fb_base. Check for this condition and fixup
 517          * 'lcd_base' address.
 518          */
 519         if (map_to_sysmem(lcdbase) != gd->fb_base)
 520                 lcd_base = map_sysmem(gd->fb_base, 0);
 521
 522         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 523
 524         lcd_get_size(&lcd_line_length);
 525         lcd_is_enabled = 1;
 526         lcd_clear();
 527         lcd_enable();
 528
 529         /* Initialize the console */
 530         lcd_set_col(0);
 531 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 532         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 533 #else
 534         lcd_set_row(1); /* leave 1 blank line below logo */
 535 #endif
 536
 537         return 0;
 538 }
 539
 540
 541 /************************************************************************/
 542 /* ** ROM capable initialization part - needed to reserve FB memory     */
 543 /************************************************************************/
 544 /*
 545  * This is called early in the system initialization to grab memory
 546  * for the LCD controller.
 547  * Returns new address for monitor, after reserving LCD buffer memory
 548  *
 549  * Note that this is running from ROM, so no write access to global data.
 550  */
 551 ulong lcd_setmem(ulong addr)
 552 {
 553         ulong size;
 554         int line_length;
 555
 556         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 557                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 558
 559         size = lcd_get_size(&line_length);
 560
 561         /* Round up to nearest full page, or MMU section if defined */
 562         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 563         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 564
 565         /* Allocate pages for the frame buffer. */
 566         addr -= size;
 567
 568         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 569               size >> 10, addr);
 570
 571         return addr;
 572 }
 573
 574 /*----------------------------------------------------------------------*/
 575
 576 static void lcd_setfgcolor(int color)
 577 {
 578         lcd_color_fg = color;
 579 }
 580
 581 int lcd_getfgcolor(void)
 582 {
 583         return lcd_color_fg;
 584 }
 585
 586 /*----------------------------------------------------------------------*/
 587
 588 static void lcd_setbgcolor(int color)
 589 {
 590         lcd_color_bg = color;
 591 }
 592
 593 int lcd_getbgcolor(void)
 594 {
 595         return lcd_color_bg;
 596 }
 597
 598 /************************************************************************/
 599 /* ** Chipset depending Bitmap / Logo stuff...                          */
 600 /************************************************************************/
 601 static inline ushort *configuration_get_cmap(void)
 602 {
 603 #if defined CONFIG_CPU_PXA
 604         struct pxafb_info *fbi = &panel_info.pxa;
 605         return (ushort *)fbi->palette;
 606 #elif defined(CONFIG_MPC823)
 607         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 608         cpm8xx_t *cp = &(immr->im_cpm);
 609         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 610 #elif defined(CONFIG_ATMEL_LCD)
 611         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 612 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 613         return panel_info.cmap;
 614 #elif defined(CONFIG_LCD_LOGO)
 615         return bmp_logo_palette;
 616 #else
 617         return NULL;
 618 #endif
 619 }
 620
 621 #ifdef CONFIG_LCD_LOGO
 622 void bitmap_plot(int x, int y)
 623 {
 624 #ifdef CONFIG_ATMEL_LCD
 625         uint *cmap = (uint *)bmp_logo_palette;
 626 #else
 627         ushort *cmap = (ushort *)bmp_logo_palette;
 628 #endif
 629         ushort i, j;
 630         uchar *bmap;
 631         uchar *fb;
 632         ushort *fb16;
 633 #if defined(CONFIG_MPC823)
 634         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 635         cpm8xx_t *cp = &(immr->im_cpm);
 636 #endif
 637         unsigned bpix = NBITS(panel_info.vl_bpix);
 638
 639         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 640                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 641                 ARRAY_SIZE(bmp_logo_palette));
 642
 643         bmap = &bmp_logo_bitmap[0];
 644         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 645
 646         if (bpix < 12) {
 647                 /* Leave room for default color map
 648                  * default case: generic system with no cmap (most likely 16bpp)
 649                  * cmap was set to the source palette, so no change is done.
 650                  * This avoids even more ifdefs in the next stanza
 651                  */
 652 #if defined(CONFIG_MPC823)
 653                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 654 #elif defined(CONFIG_ATMEL_LCD)
 655                 cmap = (uint *)configuration_get_cmap();
 656 #else
 657                 cmap = configuration_get_cmap();
 658 #endif
 659
 660                 WATCHDOG_RESET();
 661
 662                 /* Set color map */
 663                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 664                         ushort colreg = bmp_logo_palette[i];
 665 #ifdef CONFIG_ATMEL_LCD
 666                         uint lut_entry;
 667 #ifdef CONFIG_ATMEL_LCD_BGR555
 668                         lut_entry = ((colreg & 0x000F) << 11) |
 669                                         ((colreg & 0x00F0) <<  2) |
 670                                         ((colreg & 0x0F00) >>  7);
 671 #else /* CONFIG_ATMEL_LCD_RGB565 */
 672                         lut_entry = ((colreg & 0x000F) << 1) |
 673                                         ((colreg & 0x00F0) << 3) |
 674                                         ((colreg & 0x0F00) << 4);
 675 #endif
 676                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 677                         cmap++;
 678 #else /* !CONFIG_ATMEL_LCD */
 679                         *cmap++ = colreg;
 680 #endif /* CONFIG_ATMEL_LCD */
 681                 }
 682
 683                 WATCHDOG_RESET();
 684
 685                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 686                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 687                         bmap += BMP_LOGO_WIDTH;
 688                         fb += panel_info.vl_col;
 689                 }
 690         }
 691         else { /* true color mode */
 692                 u16 col16;
 693                 fb16 = (ushort *)fb;
 694                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 695                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 696                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 697                                 fb16[j] =
 698                                         ((col16 & 0x000F) << 1) |
 699                                         ((col16 & 0x00F0) << 3) |
 700                                         ((col16 & 0x0F00) << 4);
 701                                 }
 702                         bmap += BMP_LOGO_WIDTH;
 703                         fb16 += panel_info.vl_col;
 704                 }
 705         }
 706
 707         WATCHDOG_RESET();
 708         lcd_sync();
 709 }
 710 #else
 711 static inline void bitmap_plot(int x, int y) {}
 712 #endif /* CONFIG_LCD_LOGO */
 713
 714 /*----------------------------------------------------------------------*/
 715 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 716 /*
 717  * Display the BMP file located at address bmp_image.
 718  * Only uncompressed.
 719  */
 720
 721 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 722 #define BMP_ALIGN_CENTER        0x7FFF
 723
 724 static void splash_align_axis(int *axis, unsigned long panel_size,
 725                                         unsigned long picture_size)
 726 {
 727         unsigned long panel_picture_delta = panel_size - picture_size;
 728         unsigned long axis_alignment;
 729
 730         if (*axis == BMP_ALIGN_CENTER)
 731                 axis_alignment = panel_picture_delta / 2;
 732         else if (*axis < 0)
 733                 axis_alignment = panel_picture_delta + *axis + 1;
 734         else
 735                 return;
 736
 737         *axis = max(0, (int)axis_alignment);
 738 }
 739 #endif
 740
 741
 742 #ifdef CONFIG_LCD_BMP_RLE8
 743
 744 #define BMP_RLE8_ESCAPE         0
 745 #define BMP_RLE8_EOL            0
 746 #define BMP_RLE8_EOBMP          1
 747 #define BMP_RLE8_DELTA          2
 748
 749 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 750                                   int cnt)
 751 {
 752         while (cnt > 0) {
 753                 *(*fbp)++ = cmap[*bmap++];
 754                 cnt--;
 755         }
 756 }
 757
 758 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 759 {
 760         ushort *fb = *fbp;
 761         int cnt_8copy = cnt >> 3;
 762
 763         cnt -= cnt_8copy << 3;
 764         while (cnt_8copy > 0) {
 765                 *fb++ = c;
 766                 *fb++ = c;
 767                 *fb++ = c;
 768                 *fb++ = c;
 769                 *fb++ = c;
 770                 *fb++ = c;
 771                 *fb++ = c;
 772                 *fb++ = c;
 773                 cnt_8copy--;
 774         }
 775         while (cnt > 0) {
 776                 *fb++ = c;
 777                 cnt--;
 778         }
 779         *fbp = fb;
 780 }
 781
 782 /*
 783  * Do not call this function directly, must be called from lcd_display_bitmap.
 784  */
 785 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 786                                     int x_off, int y_off)
 787 {
 788         uchar *bmap;
 789         ulong width, height;
 790         ulong cnt, runlen;
 791         int x, y;
 792         int decode = 1;
 793
 794         width = get_unaligned_le32(&bmp->header.width);
 795         height = get_unaligned_le32(&bmp->header.height);
 796         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 797
 798         x = 0;
 799         y = height - 1;
 800
 801         while (decode) {
 802                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 803                         switch (bmap[1]) {
 804                         case BMP_RLE8_EOL:
 805                                 /* end of line */
 806                                 bmap += 2;
 807                                 x = 0;
 808                                 y--;
 809                                 /* 16bpix, 2-byte per pixel, width should *2 */
 810                                 fb -= (width * 2 + lcd_line_length);
 811                                 break;
 812                         case BMP_RLE8_EOBMP:
 813                                 /* end of bitmap */
 814                                 decode = 0;
 815                                 break;
 816                         case BMP_RLE8_DELTA:
 817                                 /* delta run */
 818                                 x += bmap[2];
 819                                 y -= bmap[3];
 820                                 /* 16bpix, 2-byte per pixel, x should *2 */
 821                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 822                                         * lcd_line_length + (x + x_off) * 2);
 823                                 bmap += 4;
 824                                 break;
 825                         default:
 826                                 /* unencoded run */
 827                                 runlen = bmap[1];
 828                                 bmap += 2;
 829                                 if (y < height) {
 830                                         if (x < width) {
 831                                                 if (x + runlen > width)
 832                                                         cnt = width - x;
 833                                                 else
 834                                                         cnt = runlen;
 835                                                 draw_unencoded_bitmap(
 836                                                         (ushort **)&fb,
 837                                                         bmap, cmap, cnt);
 838                                         }
 839                                         x += runlen;
 840                                 }
 841                                 bmap += runlen;
 842                                 if (runlen & 1)
 843                                         bmap++;
 844                         }
 845                 } else {
 846                         /* encoded run */
 847                         if (y < height) {
 848                                 runlen = bmap[0];
 849                                 if (x < width) {
 850                                         /* aggregate the same code */
 851                                         while (bmap[0] == 0xff &&
 852                                                bmap[2] != BMP_RLE8_ESCAPE &&
 853                                                bmap[1] == bmap[3]) {
 854                                                 runlen += bmap[2];
 855                                                 bmap += 2;
 856                                         }
 857                                         if (x + runlen > width)
 858                                                 cnt = width - x;
 859                                         else
 860                                                 cnt = runlen;
 861                                         draw_encoded_bitmap((ushort **)&fb,
 862                                                 cmap[bmap[1]], cnt);
 863                                 }
 864                                 x += runlen;
 865                         }
 866                         bmap += 2;
 867                 }
 868         }
 869 }
 870 #endif
 871
 872 #if defined(CONFIG_MPC823)
 873 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 874 #else
 875 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 876 #endif
 877
 878 #if defined(CONFIG_BMP_16BPP)
 879 #if defined(CONFIG_ATMEL_LCD_BGR555)
 880 static inline void fb_put_word(uchar **fb, uchar **from)
 881 {
 882         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 883         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 884         *from += 2;
 885 }
 886 #else
 887 static inline void fb_put_word(uchar **fb, uchar **from)
 888 {
 889         *(*fb)++ = *(*from)++;
 890         *(*fb)++ = *(*from)++;
 891 }
 892 #endif
 893 #endif /* CONFIG_BMP_16BPP */
 894
 895 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 896 {
 897         ushort *cmap = NULL;
 898         ushort *cmap_base = NULL;
 899         ushort i, j;
 900         uchar *fb;
 901         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 902         uchar *bmap;
 903         ushort padded_width;
 904         unsigned long width, height, byte_width;
 905         unsigned long pwidth = panel_info.vl_col;
 906         unsigned colors, bpix, bmp_bpix;
 907
 908         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 909                 bmp->header.signature[1] == 'M')) {
 910                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 911
 912                 return 1;
 913         }
 914
 915         width = get_unaligned_le32(&bmp->header.width);
 916         height = get_unaligned_le32(&bmp->header.height);
 917         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 918
 919         colors = 1 << bmp_bpix;
 920
 921         bpix = NBITS(panel_info.vl_bpix);
 922
 923         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 924                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 925                         bpix, bmp_bpix);
 926
 927                 return 1;
 928         }
 929
 930         /*
 931          * We support displaying 8bpp BMPs on 16bpp LCDs
 932          * and displaying 24bpp BMPs on 32bpp LCDs
 933          * */
 934         if (bpix != bmp_bpix &&
 935             !(bmp_bpix == 8 && bpix == 16) &&
 936             !(bmp_bpix == 24 && bpix == 32)) {
 937                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 938                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 939                 return 1;
 940         }
 941
 942         debug("Display-bmp: %d x %d  with %d colors\n",
 943                 (int)width, (int)height, (int)colors);
 944
 945         if (bmp_bpix == 8) {
 946                 cmap = configuration_get_cmap();
 947                 cmap_base = cmap;
 948
 949                 /* Set color map */
 950                 for (i = 0; i < colors; ++i) {
 951                         bmp_color_table_entry_t cte = bmp->color_table[i];
 952 #if !defined(CONFIG_ATMEL_LCD)
 953                         ushort colreg =
 954                                 ( ((cte.red)   << 8) & 0xf800) |
 955                                 ( ((cte.green) << 3) & 0x07e0) |
 956                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 957                         *cmap = colreg;
 958 #if defined(CONFIG_MPC823)
 959                         cmap--;
 960 #else
 961                         cmap++;
 962 #endif
 963 #else /* CONFIG_ATMEL_LCD */
 964                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 965 #endif
 966                 }
 967         }
 968
 969         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 970
 971 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 972         splash_align_axis(&x, pwidth, width);
 973         splash_align_axis(&y, panel_info.vl_row, height);
 974 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 975
 976         if ((x + width) > pwidth)
 977                 width = pwidth - x;
 978         if ((y + height) > panel_info.vl_row)
 979                 height = panel_info.vl_row - y;
 980
 981         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 982         fb   = (uchar *)(lcd_base +
 983                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 984
 985         switch (bmp_bpix) {
 986         case 1: /* pass through */
 987         case 8: {
 988 #ifdef CONFIG_LCD_BMP_RLE8
 989                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 990                 if (compression == BMP_BI_RLE8) {
 991                         if (bpix != 16) {
 992                                 /* TODO implement render code for bpix != 16 */
 993                                 printf("Error: only support 16 bpix");
 994                                 return 1;
 995                         }
 996                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 997                         break;
 998                 }
 999 #endif
1000
1001                 if (bpix != 16)
1002                         byte_width = width;
1003                 else
1004                         byte_width = width * 2;
1005
1006                 for (i = 0; i < height; ++i) {
1007                         WATCHDOG_RESET();
1008                         for (j = 0; j < width; j++) {
1009                                 if (bpix != 16) {
1010                                         FB_PUT_BYTE(fb, bmap);
1011                                 } else {
1012                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1013                                         fb += sizeof(uint16_t) / sizeof(*fb);
1014                                 }
1015                         }
1016                         bmap += (padded_width - width);
1017                         fb -= byte_width + lcd_line_length;
1018                 }
1019                 break;
1020         }
1021 #if defined(CONFIG_BMP_16BPP)
1022         case 16:
1023                 for (i = 0; i < height; ++i) {
1024                         WATCHDOG_RESET();
1025                         for (j = 0; j < width; j++)
1026                                 fb_put_word(&fb, &bmap);
1027
1028                         bmap += (padded_width - width) * 2;
1029                         fb -= width * 2 + lcd_line_length;
1030                 }
1031                 break;
1032 #endif /* CONFIG_BMP_16BPP */
1033 #if defined(CONFIG_BMP_24BMP)
1034         case 24:
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++) = 0;
1041                         }
1042                         fb -= lcd_line_length + width * (bpix / 8);
1043                 }
1044                 break;
1045 #endif /* CONFIG_BMP_24BMP */
1046 #if defined(CONFIG_BMP_32BPP)
1047         case 32:
1048                 for (i = 0; i < height; ++i) {
1049                         for (j = 0; j < width; j++) {
1050                                 *(fb++) = *(bmap++);
1051                                 *(fb++) = *(bmap++);
1052                                 *(fb++) = *(bmap++);
1053                                 *(fb++) = *(bmap++);
1054                         }
1055                         fb -= lcd_line_length + width * (bpix / 8);
1056                 }
1057                 break;
1058 #endif /* CONFIG_BMP_32BPP */
1059         default:
1060                 break;
1061         };
1062
1063         lcd_sync();
1064         return 0;
1065 }
1066 #endif
1067
1068 static void *lcd_logo(void)
1069 {
1070 #ifdef CONFIG_SPLASH_SCREEN
1071         char *s;
1072         ulong addr;
1073         static int do_splash = 1;
1074
1075         if (do_splash && (s = getenv("splashimage")) != NULL) {
1076                 int x = 0, y = 0;
1077                 do_splash = 0;
1078
1079                 if (splash_screen_prepare())
1080                         return (void *)lcd_base;
1081
1082                 addr = simple_strtoul (s, NULL, 16);
1083
1084                 splash_get_pos(&x, &y);
1085
1086                 if (bmp_display(addr, x, y) == 0)
1087                         return (void *)lcd_base;
1088         }
1089 #endif /* CONFIG_SPLASH_SCREEN */
1090
1091         bitmap_plot(0, 0);
1092
1093 #ifdef CONFIG_LCD_INFO
1094         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
1095         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
1096         lcd_show_board_info();
1097 #endif /* CONFIG_LCD_INFO */
1098
1099 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1100         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1101 #else
1102         return (void *)lcd_base;
1103 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1104 }
1105
1106 #ifdef CONFIG_SPLASHIMAGE_GUARD
1107 static int on_splashimage(const char *name, const char *value, enum env_op op,
1108         int flags)
1109 {
1110         ulong addr;
1111         int aligned;
1112
1113         if (op == env_op_delete)
1114                 return 0;
1115
1116         addr = simple_strtoul(value, NULL, 16);
1117         /* See README.displaying-bmps */
1118         aligned = (addr % 4 == 2);
1119         if (!aligned) {
1120                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1121                 return -1;
1122         }
1123
1124         return 0;
1125 }
1126
1127 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1128 #endif
1129
1130 void lcd_position_cursor(unsigned col, unsigned row)
1131 {
1132         console_curr_col = min_t(short, col, console_cols - 1);
1133         console_curr_row = min_t(short, row, console_rows - 1);
1134 }
1135
1136 int lcd_get_pixel_width(void)
1137 {
1138         return panel_info.vl_col;
1139 }
1140
1141 int lcd_get_pixel_height(void)
1142 {
1143         return panel_info.vl_row;
1144 }
1145
1146 int lcd_get_screen_rows(void)
1147 {
1148         return console_rows;
1149 }
1150
1151 int lcd_get_screen_columns(void)
1152 {
1153         return console_cols;
1154 }
1155
1156 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1157 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1158 {
1159 #if LCD_BPP == LCD_COLOR16
1160         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1161                                        panel_info.vl_col, panel_info.vl_row,
1162                                        panel_info.vl_col * 2, "r5g6b5");
1163 #else
1164         return -1;
1165 #endif
1166 }
1167
1168 int lcd_dt_simplefb_add_node(void *blob)
1169 {
1170         static const char compat[] = "simple-framebuffer";
1171         static const char disabled[] = "disabled";
1172         int off, ret;
1173
1174         off = fdt_add_subnode(blob, 0, "framebuffer");
1175         if (off < 0)
1176                 return -1;
1177
1178         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1179         if (ret < 0)
1180                 return -1;
1181
1182         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1183         if (ret < 0)
1184                 return -1;
1185
1186         return lcd_dt_simplefb_configure_node(blob, off);
1187 }
1188
1189 int lcd_dt_simplefb_enable_existing_node(void *blob)
1190 {
1191         int off;
1192
1193         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1194         if (off < 0)
1195                 return -1;
1196
1197         return lcd_dt_simplefb_configure_node(blob, off);
1198 }
1199 #endif