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 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  85 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  86                                         / VIDEO_FONT_HEIGHT)
  87 #else
  88 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  89 #endif
  90
  91 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
  92 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  93 #define CONSOLE_ROW_FIRST       lcd_console_address
  94 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  95 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  96                                         - CONSOLE_ROW_SIZE)
  97 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
  98 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  99
 100 #if LCD_BPP == LCD_MONOCHROME
 101 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 102                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 103 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16) || \
 104         (LCD_BPP == LCD_COLOR32)
 105 # define COLOR_MASK(c)          (c)
 106 #else
 107 # error Unsupported LCD BPP.
 108 #endif
 109
 110 DECLARE_GLOBAL_DATA_PTR;
 111
 112 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 113 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 114
 115 static int lcd_init(void *lcdbase);
 116
 117 static void *lcd_logo(void);
 118
 119 static void lcd_setfgcolor(int color);
 120 static void lcd_setbgcolor(int color);
 121
 122 static int lcd_color_fg;
 123 static int lcd_color_bg;
 124 int lcd_line_length;
 125
 126 char lcd_is_enabled = 0;
 127
 128 static short console_col;
 129 static short console_row;
 130
 131 static void *lcd_console_address;
 132 static void *lcd_base;                  /* Start of framebuffer memory  */
 133
 134 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 135
 136 /************************************************************************/
 137
 138 /* Flush LCD activity to the caches */
 139 void lcd_sync(void)
 140 {
 141         /*
 142          * flush_dcache_range() is declared in common.h but it seems that some
 143          * architectures do not actually implement it. Is there a way to find
 144          * out whether it exists? For now, ARM is safe.
 145          */
 146 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 147         int line_length;
 148
 149         if (lcd_flush_dcache)
 150                 flush_dcache_range((u32)lcd_base,
 151                         (u32)(lcd_base + lcd_get_size(&line_length)));
 152 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 153         static ulong last_sync;
 154
 155         if (get_timer(last_sync) > 10) {
 156                 sandbox_sdl_sync(lcd_base);
 157                 last_sync = get_timer(0);
 158         }
 159 #endif
 160 }
 161
 162 void lcd_set_flush_dcache(int flush)
 163 {
 164         lcd_flush_dcache = (flush != 0);
 165 }
 166
 167 /*----------------------------------------------------------------------*/
 168
 169 static void console_scrollup(void)
 170 {
 171         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 172
 173         /* Copy up rows ignoring those that will be overwritten */
 174         memcpy(CONSOLE_ROW_FIRST,
 175                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 176                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 177
 178         /* Clear the last rows */
 179 #if (LCD_BPP != LCD_COLOR32)
 180         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 181                 COLOR_MASK(lcd_color_bg),
 182                 CONSOLE_ROW_SIZE * rows);
 183 #else
 184         u32 *ppix = lcd_console_address +
 185                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
 186         u32 i;
 187         for (i = 0;
 188             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
 189             i++) {
 190                 *ppix++ = COLOR_MASK(lcd_color_bg);
 191         }
 192 #endif
 193         lcd_sync();
 194         console_row -= rows;
 195 }
 196
 197 /*----------------------------------------------------------------------*/
 198
 199 static inline void console_back(void)
 200 {
 201         if (--console_col < 0) {
 202                 console_col = CONSOLE_COLS-1 ;
 203                 if (--console_row < 0)
 204                         console_row = 0;
 205         }
 206
 207         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 208                 console_row * VIDEO_FONT_HEIGHT, ' ');
 209 }
 210
 211 /*----------------------------------------------------------------------*/
 212
 213 static inline void console_newline(void)
 214 {
 215         console_col = 0;
 216
 217         /* Check if we need to scroll the terminal */
 218         if (++console_row >= CONSOLE_ROWS)
 219                 console_scrollup();
 220         else
 221                 lcd_sync();
 222 }
 223
 224 /*----------------------------------------------------------------------*/
 225
 226 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 227 {
 228         lcd_putc(c);
 229 }
 230
 231 void lcd_putc(const char c)
 232 {
 233         if (!lcd_is_enabled) {
 234                 serial_putc(c);
 235
 236                 return;
 237         }
 238
 239         switch (c) {
 240         case '\r':
 241                 console_col = 0;
 242
 243                 return;
 244         case '\n':
 245                 console_newline();
 246
 247                 return;
 248         case '\t':      /* Tab (8 chars alignment) */
 249                 console_col +=  8;
 250                 console_col &= ~7;
 251
 252                 if (console_col >= CONSOLE_COLS)
 253                         console_newline();
 254
 255                 return;
 256         case '\b':
 257                 console_back();
 258
 259                 return;
 260         default:
 261                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 262                         console_row * VIDEO_FONT_HEIGHT, c);
 263                 if (++console_col >= CONSOLE_COLS)
 264                         console_newline();
 265         }
 266 }
 267
 268 /*----------------------------------------------------------------------*/
 269
 270 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 271 {
 272         lcd_puts(s);
 273 }
 274
 275 void lcd_puts(const char *s)
 276 {
 277         if (!lcd_is_enabled) {
 278                 serial_puts(s);
 279
 280                 return;
 281         }
 282
 283         while (*s)
 284                 lcd_putc(*s++);
 285
 286         lcd_sync();
 287 }
 288
 289 /*----------------------------------------------------------------------*/
 290
 291 void lcd_printf(const char *fmt, ...)
 292 {
 293         va_list args;
 294         char buf[CONFIG_SYS_PBSIZE];
 295
 296         va_start(args, fmt);
 297         vsprintf(buf, fmt, args);
 298         va_end(args);
 299
 300         lcd_puts(buf);
 301 }
 302
 303 /************************************************************************/
 304 /* ** Low-Level Graphics Routines                                       */
 305 /************************************************************************/
 306
 307 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 308 {
 309         void *dest;
 310         ushort row;
 311
 312 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 313         y += BMP_LOGO_HEIGHT;
 314 #endif
 315
 316 #if LCD_BPP == LCD_MONOCHROME
 317         ushort off  = x * NBITS(LCD_BPP) % 8;
 318 #endif
 319
 320         dest = lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP) / 8;
 321
 322         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 323                 uchar *s = str;
 324                 int i;
 325 #if LCD_BPP == LCD_COLOR16
 326                 ushort *d = (ushort *)dest;
 327 #elif LCD_BPP == LCD_COLOR32
 328                 u32 *d = (u32 *)dest;
 329 #else
 330                 uchar *d = dest;
 331 #endif
 332
 333 #if LCD_BPP == LCD_MONOCHROME
 334                 uchar rest = *d & -(1 << (8 - off));
 335                 uchar sym;
 336 #endif
 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 #if LCD_BPP == LCD_MONOCHROME
 344                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 345                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 346
 347                         *d++ = rest | (sym >> off);
 348                         rest = sym << (8-off);
 349 #else
 350                         for (c = 0; c < 8; ++c) {
 351                                 *d++ = (bits & 0x80) ?
 352                                                 lcd_color_fg : lcd_color_bg;
 353                                 bits <<= 1;
 354                         }
 355 #endif
 356                 }
 357 #if LCD_BPP == LCD_MONOCHROME
 358                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 359 #endif
 360         }
 361 }
 362
 363 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 364 {
 365         lcd_drawchars(x, y, &c, 1);
 366 }
 367
 368 /************************************************************************/
 369 /**  Small utility to check that you got the colours right              */
 370 /************************************************************************/
 371 #ifdef LCD_TEST_PATTERN
 372
 373 #define N_BLK_VERT      2
 374 #define N_BLK_HOR       3
 375
 376 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 377         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 378         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 379 };
 380
 381 #if LCD_BPP == LCD_COLOR8
 382 typedef uchar pix_t;
 383 #elif LCD_BPP == LCD_COLOR16
 384 typedef ushort pix_t;
 385 #elif LCD_BPP == LCD_COLOR32
 386 typedef ulong pix_t;
 387 #else
 388 #error Unsupported pixelformat
 389 #endif
 390
 391 static void test_pattern(void)
 392 {
 393         ushort v_max  = panel_info.vl_row;
 394         ushort h_max  = panel_info.vl_col;
 395         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 396         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 397         ushort v, h;
 398         pix_t *pix = lcd_base;
 399
 400         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 401                 h_max, v_max, h_step, v_step);
 402
 403         /* WARNING: Code silently assumes 8bit/pixel */
 404         for (v = 0; v < v_max; ++v) {
 405                 uchar iy = v / v_step;
 406                 for (h = 0; h < h_max; ++h) {
 407                         uchar ix = N_BLK_HOR * iy + h / h_step;
 408                         *pix++ = test_colors[ix];
 409                 }
 410         }
 411 }
 412 #endif /* LCD_TEST_PATTERN */
 413
 414
 415 /************************************************************************/
 416 /* ** GENERIC Initialization Routines                                   */
 417 /************************************************************************/
 418 /*
 419  * With most lcd drivers the line length is set up
 420  * by calculating it from panel_info parameters. Some
 421  * drivers need to calculate the line length differently,
 422  * so make the function weak to allow overriding it.
 423  */
 424 __weak int lcd_get_size(int *line_length)
 425 {
 426         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 427         return *line_length * panel_info.vl_row;
 428 }
 429
 430 int drv_lcd_init(void)
 431 {
 432         struct stdio_dev lcddev;
 433         int rc;
 434
 435         lcd_base = map_sysmem(gd->fb_base, 0);
 436
 437         lcd_init(lcd_base);             /* LCD initialization */
 438
 439         /* Device initialization */
 440         memset(&lcddev, 0, sizeof(lcddev));
 441
 442         strcpy(lcddev.name, "lcd");
 443         lcddev.ext   = 0;                       /* No extensions */
 444         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 445         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 446         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 447
 448         rc = stdio_register(&lcddev);
 449
 450         return (rc == 0) ? 1 : rc;
 451 }
 452
 453 /*----------------------------------------------------------------------*/
 454 void lcd_clear(void)
 455 {
 456 #if LCD_BPP == LCD_MONOCHROME
 457         /* Setting the palette */
 458         lcd_initcolregs();
 459
 460 #elif LCD_BPP == LCD_COLOR8
 461         /* Setting the palette */
 462         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 463         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 464         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 465         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 466         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 467         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 468         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 469         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 470         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 471 #endif
 472
 473 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 474         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 475         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 476 #else
 477         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 478         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 479 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 480
 481 #ifdef  LCD_TEST_PATTERN
 482         test_pattern();
 483 #else
 484         /* set framebuffer to background color */
 485 #if (LCD_BPP != LCD_COLOR32)
 486         memset((char *)lcd_base,
 487                 COLOR_MASK(lcd_color_bg),
 488                 lcd_line_length * panel_info.vl_row);
 489 #else
 490         u32 *ppix = lcd_base;
 491         u32 i;
 492         for (i = 0;
 493            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 494            i++) {
 495                 *ppix++ = COLOR_MASK(lcd_color_bg);
 496         }
 497 #endif
 498 #endif
 499         /* Paint the logo and retrieve LCD base address */
 500         debug("[LCD] Drawing the logo @ %p...\n", lcd_base);
 501         lcd_console_address = lcd_logo();
 502
 503         console_col = 0;
 504         console_row = 0;
 505         lcd_sync();
 506 }
 507
 508 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 509                         char *const argv[])
 510 {
 511         lcd_clear();
 512         return 0;
 513 }
 514
 515 U_BOOT_CMD(
 516         cls,    1,      1,      do_lcd_clear,
 517         "clear screen",
 518         ""
 519 );
 520
 521 /*----------------------------------------------------------------------*/
 522
 523 static int lcd_init(void *lcdbase)
 524 {
 525         /* Initialize the lcd controller */
 526         debug("[LCD] Initializing %ux%ux%u LCD framebuffer at %p\n",
 527                 panel_info.vl_col, panel_info.vl_row, NBITS(panel_info.vl_bpix),
 528                 lcdbase);
 529
 530         lcd_ctrl_init(lcdbase);
 531
 532         /*
 533          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 534          * the 'lcdbase' argument and uses custom lcd base address
 535          * by setting up gd->fb_base. Check for this condition and fixup
 536          * 'lcd_base' address.
 537          */
 538         if (map_to_sysmem(lcdbase) != gd->fb_base)
 539                 lcd_base = map_sysmem(gd->fb_base, 0);
 540
 541         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 542
 543         lcd_get_size(&lcd_line_length);
 544         lcd_is_enabled = 1;
 545         lcd_clear();
 546         lcd_enable();
 547
 548         /* Initialize the console */
 549         console_col = 0;
 550 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 551         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 552 #else
 553         console_row = 1;        /* leave 1 blank line below logo */
 554 #endif
 555
 556         return 0;
 557 }
 558
 559
 560 /************************************************************************/
 561 /* ** ROM capable initialization part - needed to reserve FB memory     */
 562 /************************************************************************/
 563 /*
 564  * This is called early in the system initialization to grab memory
 565  * for the LCD controller.
 566  * Returns new address for monitor, after reserving LCD buffer memory
 567  *
 568  * Note that this is running from ROM, so no write access to global data.
 569  */
 570 ulong lcd_setmem(ulong addr)
 571 {
 572         ulong size;
 573         int line_length;
 574
 575         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 576                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 577
 578         size = lcd_get_size(&line_length);
 579
 580         /* Round up to nearest full page, or MMU section if defined */
 581         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 582         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 583
 584         /* Allocate pages for the frame buffer. */
 585         addr -= size;
 586
 587         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 588               size >> 10, addr);
 589
 590         return addr;
 591 }
 592
 593 /*----------------------------------------------------------------------*/
 594
 595 static void lcd_setfgcolor(int color)
 596 {
 597         lcd_color_fg = color;
 598 }
 599
 600 /*----------------------------------------------------------------------*/
 601
 602 static void lcd_setbgcolor(int color)
 603 {
 604         lcd_color_bg = color;
 605 }
 606
 607 /************************************************************************/
 608 /* ** Chipset depending Bitmap / Logo stuff...                          */
 609 /************************************************************************/
 610 static inline ushort *configuration_get_cmap(void)
 611 {
 612 #if defined CONFIG_CPU_PXA
 613         struct pxafb_info *fbi = &panel_info.pxa;
 614         return (ushort *)fbi->palette;
 615 #elif defined(CONFIG_MPC823)
 616         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 617         cpm8xx_t *cp = &(immr->im_cpm);
 618         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 619 #elif defined(CONFIG_ATMEL_LCD)
 620         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 621 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 622         return panel_info.cmap;
 623 #elif defined(CONFIG_LCD_LOGO)
 624         return bmp_logo_palette;
 625 #else
 626         return NULL;
 627 #endif
 628 }
 629
 630 #ifdef CONFIG_LCD_LOGO
 631 void bitmap_plot(int x, int y)
 632 {
 633 #ifdef CONFIG_ATMEL_LCD
 634         uint *cmap = (uint *)bmp_logo_palette;
 635 #else
 636         ushort *cmap = (ushort *)bmp_logo_palette;
 637 #endif
 638         ushort i, j;
 639         uchar *bmap;
 640         uchar *fb;
 641         ushort *fb16;
 642 #if defined(CONFIG_MPC823)
 643         immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 644         cpm8xx_t *cp = &(immr->im_cpm);
 645 #endif
 646         unsigned bpix = NBITS(panel_info.vl_bpix);
 647
 648         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 649                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 650                 ARRAY_SIZE(bmp_logo_palette));
 651
 652         bmap = &bmp_logo_bitmap[0];
 653         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 654
 655         if (bpix < 12) {
 656                 /* Leave room for default color map
 657                  * default case: generic system with no cmap (most likely 16bpp)
 658                  * cmap was set to the source palette, so no change is done.
 659                  * This avoids even more ifdefs in the next stanza
 660                  */
 661 #if defined(CONFIG_MPC823)
 662                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 663 #elif defined(CONFIG_ATMEL_LCD)
 664                 cmap = (uint *)configuration_get_cmap();
 665 #else
 666                 cmap = configuration_get_cmap();
 667 #endif
 668
 669                 WATCHDOG_RESET();
 670
 671                 /* Set color map */
 672                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 673                         ushort colreg = bmp_logo_palette[i];
 674 #ifdef CONFIG_ATMEL_LCD
 675                         uint lut_entry;
 676 #ifdef CONFIG_ATMEL_LCD_BGR555
 677                         lut_entry = ((colreg & 0x000F) << 11) |
 678                                         ((colreg & 0x00F0) <<  2) |
 679                                         ((colreg & 0x0F00) >>  7);
 680 #else /* CONFIG_ATMEL_LCD_RGB565 */
 681                         lut_entry = ((colreg & 0x000F) << 1) |
 682                                         ((colreg & 0x00F0) << 3) |
 683                                         ((colreg & 0x0F00) << 4);
 684 #endif
 685                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 686                         cmap++;
 687 #else /* !CONFIG_ATMEL_LCD */
 688 #ifdef  CONFIG_SYS_INVERT_COLORS
 689                         *cmap++ = 0xffff - colreg;
 690 #else
 691                         *cmap++ = colreg;
 692 #endif
 693 #endif /* CONFIG_ATMEL_LCD */
 694                 }
 695
 696                 WATCHDOG_RESET();
 697
 698                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 699                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 700                         bmap += BMP_LOGO_WIDTH;
 701                         fb += panel_info.vl_col;
 702                 }
 703         } else if (NBITS(panel_info.vl_bpix) == 16) {
 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         } else { /* true color mode */
 718                 u16 col16;
 719                 u32 *fb32 = lcd_base + y * lcd_line_length + x;
 720
 721                 for (i = 0; i < BMP_LOGO_HEIGHT; i++) {
 722                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 723                                 col16 = bmp_logo_palette[bmap[j] - 16];
 724                                 fb32[j] =
 725                                         ((col16 & 0x000F) << 4) |
 726                                         ((col16 & 0x00F0) << 8) |
 727                                         ((col16 & 0x0F00) << 12);
 728                                 }
 729                         bmap += BMP_LOGO_WIDTH;
 730                         fb32 += panel_info.vl_col;
 731                 }
 732         }
 733
 734         WATCHDOG_RESET();
 735         lcd_sync();
 736 }
 737 #else
 738 static inline void bitmap_plot(int x, int y) {}
 739 #endif /* CONFIG_LCD_LOGO */
 740
 741 /*----------------------------------------------------------------------*/
 742 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 743 /*
 744  * Display the BMP file located at address bmp_image.
 745  * Only uncompressed.
 746  */
 747
 748 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 749 #define BMP_ALIGN_CENTER        0x7FFF
 750
 751 static void splash_align_axis(int *axis, unsigned long panel_size,
 752                                         unsigned long picture_size)
 753 {
 754         unsigned long panel_picture_delta = panel_size - picture_size;
 755         unsigned long axis_alignment;
 756
 757         if (*axis == BMP_ALIGN_CENTER)
 758                 axis_alignment = panel_picture_delta / 2;
 759         else if (*axis < 0)
 760                 axis_alignment = panel_picture_delta + *axis + 1;
 761         else
 762                 return;
 763
 764         *axis = max(0, (int)axis_alignment);
 765 }
 766 #endif
 767
 768
 769 #ifdef CONFIG_LCD_BMP_RLE8
 770
 771 #define BMP_RLE8_ESCAPE         0
 772 #define BMP_RLE8_EOL            0
 773 #define BMP_RLE8_EOBMP          1
 774 #define BMP_RLE8_DELTA          2
 775
 776 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 777                                   int cnt)
 778 {
 779         while (cnt > 0) {
 780                 *(*fbp)++ = cmap[*bmap++];
 781                 cnt--;
 782         }
 783 }
 784
 785 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 786 {
 787         ushort *fb = *fbp;
 788         int cnt_8copy = cnt >> 3;
 789
 790         cnt -= cnt_8copy << 3;
 791         while (cnt_8copy > 0) {
 792                 *fb++ = c;
 793                 *fb++ = c;
 794                 *fb++ = c;
 795                 *fb++ = c;
 796                 *fb++ = c;
 797                 *fb++ = c;
 798                 *fb++ = c;
 799                 *fb++ = c;
 800                 cnt_8copy--;
 801         }
 802         while (cnt > 0) {
 803                 *fb++ = c;
 804                 cnt--;
 805         }
 806         *fbp = fb;
 807 }
 808
 809 /*
 810  * Do not call this function directly, must be called from lcd_display_bitmap.
 811  */
 812 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 813                                     int x_off, int y_off)
 814 {
 815         uchar *bmap;
 816         ulong width, height;
 817         ulong cnt, runlen;
 818         int x, y;
 819         int decode = 1;
 820
 821         width = get_unaligned_le32(&bmp->header.width);
 822         height = get_unaligned_le32(&bmp->header.height);
 823         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 824
 825         x = 0;
 826         y = height - 1;
 827
 828         while (decode) {
 829                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 830                         switch (bmap[1]) {
 831                         case BMP_RLE8_EOL:
 832                                 /* end of line */
 833                                 bmap += 2;
 834                                 x = 0;
 835                                 y--;
 836                                 /* 16bpix, 2-byte per pixel, width should *2 */
 837                                 fb -= (width * 2 + lcd_line_length);
 838                                 break;
 839                         case BMP_RLE8_EOBMP:
 840                                 /* end of bitmap */
 841                                 decode = 0;
 842                                 break;
 843                         case BMP_RLE8_DELTA:
 844                                 /* delta run */
 845                                 x += bmap[2];
 846                                 y -= bmap[3];
 847                                 /* 16bpix, 2-byte per pixel, x should *2 */
 848                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 849                                         * lcd_line_length + (x + x_off) * 2);
 850                                 bmap += 4;
 851                                 break;
 852                         default:
 853                                 /* unencoded run */
 854                                 runlen = bmap[1];
 855                                 bmap += 2;
 856                                 if (y < height) {
 857                                         if (x < width) {
 858                                                 if (x + runlen > width)
 859                                                         cnt = width - x;
 860                                                 else
 861                                                         cnt = runlen;
 862                                                 draw_unencoded_bitmap(
 863                                                         (ushort **)&fb,
 864                                                         bmap, cmap, cnt);
 865                                         }
 866                                         x += runlen;
 867                                 }
 868                                 bmap += runlen;
 869                                 if (runlen & 1)
 870                                         bmap++;
 871                         }
 872                 } else {
 873                         /* encoded run */
 874                         if (y < height) {
 875                                 runlen = bmap[0];
 876                                 if (x < width) {
 877                                         /* aggregate the same code */
 878                                         while (bmap[0] == 0xff &&
 879                                                bmap[2] != BMP_RLE8_ESCAPE &&
 880                                                bmap[1] == bmap[3]) {
 881                                                 runlen += bmap[2];
 882                                                 bmap += 2;
 883                                         }
 884                                         if (x + runlen > width)
 885                                                 cnt = width - x;
 886                                         else
 887                                                 cnt = runlen;
 888                                         draw_encoded_bitmap((ushort **)&fb,
 889                                                 cmap[bmap[1]], cnt);
 890                                 }
 891                                 x += runlen;
 892                         }
 893                         bmap += 2;
 894                 }
 895         }
 896 }
 897 #endif
 898
 899 #if defined(CONFIG_MPC823)
 900 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 901 #else
 902 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 903 #endif
 904
 905 #if defined(CONFIG_BMP_16BPP)
 906 #if defined(CONFIG_ATMEL_LCD_BGR555)
 907 static inline void fb_put_word(uchar **fb, uchar **from)
 908 {
 909         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 910         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 911         *from += 2;
 912 }
 913 #else
 914 static inline void fb_put_word(uchar **fb, uchar **from)
 915 {
 916         *(*fb)++ = *(*from)++;
 917         *(*fb)++ = *(*from)++;
 918 }
 919 #endif
 920 #endif /* CONFIG_BMP_16BPP */
 921
 922 static inline bmp_color_table_entry_t *get_color_table(bmp_image_t *bmp)
 923 {
 924         bmp_header_t *bh = &bmp->header;
 925         return (void *)bmp + offsetof(bmp_header_t, size) + bh->size;
 926 }
 927
 928 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 929 {
 930         ushort *cmap = NULL;
 931         ushort *cmap_base = NULL;
 932         ushort i, j;
 933         uchar *fb;
 934         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 935         uchar *bmap;
 936         ushort padded_width;
 937         unsigned long width, height;
 938         unsigned long pwidth = panel_info.vl_col;
 939         unsigned long long colors;
 940         unsigned bpix, bmp_bpix;
 941         bmp_color_table_entry_t *cte;
 942
 943         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 944                 bmp->header.signature[1] == 'M')) {
 945                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 946
 947                 return 1;
 948         }
 949
 950         width = get_unaligned_le32(&bmp->header.width);
 951         height = get_unaligned_le32(&bmp->header.height);
 952         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 953
 954         colors = 1 << bmp_bpix;
 955
 956         bpix = NBITS(panel_info.vl_bpix);
 957
 958         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 959                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 960                         bpix, bmp_bpix);
 961
 962                 return 1;
 963         }
 964
 965         /*
 966          * We support displaying 8bpp BMPs on 16bpp LCDs
 967          * and displaying 24bpp BMPs on 32bpp LCDs
 968          * */
 969         if (bpix != bmp_bpix &&
 970             !(bmp_bpix == 8 && bpix == 16) &&
 971             !(bmp_bpix == 24 && bpix == 32)) {
 972                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 973                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 974                 return 1;
 975         }
 976
 977         debug("Display-bmp: %lu x %lu  with %llu colors\n",
 978                 width, height, colors);
 979
 980         cte = get_color_table(bmp);
 981         if (bmp_bpix == 8) {
 982                 cmap = configuration_get_cmap();
 983                 cmap_base = cmap;
 984
 985                 /* Set color map */
 986                 for (i = 0; i < colors; ++i) {
 987 #if !defined(CONFIG_ATMEL_LCD)
 988                         ushort colreg =
 989                                 ( ((cte[i].red)   << 8) & 0xf800) |
 990                                 ( ((cte[i].green) << 3) & 0x07e0) |
 991                                 ( ((cte[i].blue)  >> 3) & 0x001f) ;
 992 #ifdef CONFIG_SYS_INVERT_COLORS
 993                         *cmap = 0xffff - colreg;
 994 #else
 995                         *cmap = colreg;
 996 #endif
 997 #if defined(CONFIG_MPC823)
 998                         cmap--;
 999 #else
1000                         cmap++;
1001 #endif
1002 #else /* CONFIG_ATMEL_LCD */
1003                         lcd_setcolreg(i, cte[i].red, cte[i].green, cte[i].blue);
1004 #endif
1005                 }
1006         }
1007
1008         padded_width = ALIGN(width, 4);
1009
1010 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1011         splash_align_axis(&x, pwidth, width);
1012         splash_align_axis(&y, panel_info.vl_row, height);
1013 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1014         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
1015
1016         if ((x + width) > pwidth)
1017                 width = pwidth - x;
1018         if ((y + height) > panel_info.vl_row) {
1019                 height = panel_info.vl_row - y;
1020                 bmap += (panel_info.vl_row - y) * padded_width;
1021         }
1022
1023         fb   = (uchar *)(lcd_base +
1024                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1025
1026         switch (bmp_bpix) {
1027         case 1: /* pass through */
1028         case 8: {
1029 #ifdef CONFIG_LCD_BMP_RLE8
1030                 u32 compression = get_unaligned_le32(&bmp->header.compression);
1031                 if (compression == BMP_BI_RLE8) {
1032                         if (bpix != 16) {
1033                                 /* TODO implement render code for bpix != 16 */
1034                                 printf("Error: only support 16 bpix");
1035                                 return 1;
1036                         }
1037                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1038                         break;
1039                 }
1040 #endif
1041
1042                 for (i = 0; i < height; ++i) {
1043                         WATCHDOG_RESET();
1044                         for (j = 0; j < width; j++) {
1045                                 if (bpix == 32) {
1046                                         int i = *bmap++;
1047
1048                                         fb[3] = 0; /* T */
1049                                         fb[0] = cte[i].blue;
1050                                         fb[1] = cte[i].green;
1051                                         fb[2] = cte[i].red;
1052                                         fb += sizeof(uint32_t) / sizeof(*fb);
1053                                 } else if (bpix == 16) {
1054                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1055                                         fb += sizeof(uint16_t) / sizeof(*fb);
1056                                 } else {
1057                                         FB_PUT_BYTE(fb, bmap);
1058                                 }
1059                         }
1060                         if (bpix > 8) {
1061                                 bmap += padded_width - width;
1062                                 fb   -= width * bpix / 8 + lcd_line_length;
1063                         } else {
1064                                 bmap += padded_width;
1065                                 fb -= lcd_line_length;
1066                         }
1067                 }
1068                 break;
1069         }
1070 #if defined(CONFIG_BMP_16BPP)
1071         case 16:
1072                 for (i = 0; i < height; ++i) {
1073                         WATCHDOG_RESET();
1074                         for (j = 0; j < width; j++)
1075                                 fb_put_word(&fb, &bmap);
1076
1077                         bmap += (padded_width - width) * 2;
1078                         fb -= width * 2 + lcd_line_length;
1079                 }
1080                 break;
1081 #endif /* CONFIG_BMP_16BPP */
1082 #if defined(CONFIG_BMP_24BMP)
1083         case 24:
1084                 for (i = 0; i < height; ++i) {
1085                         for (j = 0; j < width; j++) {
1086                                 *(fb++) = *(bmap++);
1087                                 *(fb++) = *(bmap++);
1088                                 *(fb++) = *(bmap++);
1089                                 *(fb++) = 0;
1090                         }
1091                         fb -= lcd_line_length + width * (bpix / 8);
1092                 }
1093                 break;
1094 #endif /* CONFIG_BMP_24BPP */
1095 #if defined(CONFIG_BMP_32BPP)
1096         case 32:
1097                 for (i = 0; i < height; ++i) {
1098                         WATCHDOG_RESET();
1099                         for (j = 0; j < width; j++) {
1100                                 fb[3] = *bmap++; /* T */
1101                                 fb[0] = *bmap++; /* B */
1102                                 fb[1] = *bmap++; /* G */
1103                                 fb[2] = *bmap++; /* R */
1104                                 fb += 4;
1105                         }
1106                         bmap += (padded_width - width) * 4;
1107                         fb -= lcd_line_length + width * (bpix / 8);
1108                 }
1109                 break;
1110 #endif /* CONFIG_BMP_32BPP */
1111         };
1112
1113         return 0;
1114 }
1115 #endif
1116
1117 static void *lcd_logo(void)
1118 {
1119 #ifdef CONFIG_SPLASH_SCREEN
1120         char *s;
1121         ulong addr;
1122         static int do_splash = 1;
1123
1124         if (do_splash && (s = getenv("splashimage")) != NULL) {
1125                 int x = 0, y = 0;
1126                 char *end;
1127
1128                 do_splash = 0;
1129
1130                 if (splash_screen_prepare())
1131                         return (void *)lcd_base;
1132
1133                 addr = simple_strtoul (s, &end, 16);
1134                 if (addr == 0 || *end != '\0')
1135                         return lcd_base;
1136
1137                 splash_get_pos(&x, &y);
1138
1139                 if (bmp_display(addr, x, y) == 0)
1140                         return (void *)lcd_base;
1141         }
1142 #endif /* CONFIG_SPLASH_SCREEN */
1143
1144         bitmap_plot(0, 0);
1145
1146 #ifdef CONFIG_LCD_INFO
1147         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1148         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1149         lcd_show_board_info();
1150 #endif /* CONFIG_LCD_INFO */
1151
1152 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1153         return lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
1154 #else
1155         return lcd_base;
1156 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1157 }
1158
1159 #ifdef CONFIG_SPLASHIMAGE_GUARD
1160 static int on_splashimage(const char *name, const char *value, enum env_op op,
1161         int flags)
1162 {
1163         ulong addr;
1164         int aligned;
1165
1166         if (op == env_op_delete)
1167                 return 0;
1168
1169         addr = simple_strtoul(value, NULL, 16);
1170         /* See README.displaying-bmps */
1171         aligned = (addr % 4 == 2);
1172         if (!aligned) {
1173                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1174                 return -1;
1175         }
1176
1177         return 0;
1178 }
1179
1180 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1181 #endif
1182
1183 void lcd_position_cursor(unsigned col, unsigned row)
1184 {
1185         console_col = min_t(short, col, CONSOLE_COLS - 1);
1186         console_row = min_t(short, row, CONSOLE_ROWS - 1);
1187 }
1188
1189 int lcd_get_pixel_width(void)
1190 {
1191         return panel_info.vl_col;
1192 }
1193
1194 int lcd_get_pixel_height(void)
1195 {
1196         return panel_info.vl_row;
1197 }
1198
1199 int lcd_get_screen_rows(void)
1200 {
1201         return CONSOLE_ROWS;
1202 }
1203
1204 int lcd_get_screen_columns(void)
1205 {
1206         return CONSOLE_COLS;
1207 }
1208
1209 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1210 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1211 {
1212 #if LCD_BPP == LCD_COLOR16
1213         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1214                                        panel_info.vl_col, panel_info.vl_row,
1215                                        panel_info.vl_col * 2, "r5g6b5");
1216 #else
1217         return -1;
1218 #endif
1219 }
1220
1221 int lcd_dt_simplefb_add_node(void *blob)
1222 {
1223         static const char compat[] = "simple-framebuffer";
1224         static const char disabled[] = "disabled";
1225         int off, ret;
1226
1227         off = fdt_add_subnode(blob, 0, "framebuffer");
1228         if (off < 0)
1229                 return -1;
1230
1231         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1232         if (ret < 0)
1233                 return -1;
1234
1235         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1236         if (ret < 0)
1237                 return -1;
1238
1239         return lcd_dt_simplefb_configure_node(blob, off);
1240 }
1241
1242 int lcd_dt_simplefb_enable_existing_node(void *blob)
1243 {
1244         int off;
1245
1246         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1247         if (off < 0)
1248                 return -1;
1249
1250         return lcd_dt_simplefb_configure_node(blob, off);
1251 }
1252 #endif