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         uchar *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 * (1 << LCD_BPP) % 8;
 318 #endif
 319
 320         dest = (uchar *)(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 /* LCD_BPP == LCD_COLOR8 or LCD_COLOR16 or LCD_COLOR32 */
 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 static void test_pattern(void)
 382 {
 383         ushort v_max  = panel_info.vl_row;
 384         ushort h_max  = panel_info.vl_col;
 385         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 386         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 387         ushort v, h;
 388         uchar *pix = (uchar *)lcd_base;
 389
 390         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 391                 h_max, v_max, h_step, v_step);
 392
 393         /* WARNING: Code silently assumes 8bit/pixel */
 394         for (v = 0; v < v_max; ++v) {
 395                 uchar iy = v / v_step;
 396                 for (h = 0; h < h_max; ++h) {
 397                         uchar ix = N_BLK_HOR * iy + h / h_step;
 398                         *pix++ = test_colors[ix];
 399                 }
 400         }
 401 }
 402 #endif /* LCD_TEST_PATTERN */
 403
 404
 405 /************************************************************************/
 406 /* ** GENERIC Initialization Routines                                   */
 407 /************************************************************************/
 408 /*
 409  * With most lcd drivers the line length is set up
 410  * by calculating it from panel_info parameters. Some
 411  * drivers need to calculate the line length differently,
 412  * so make the function weak to allow overriding it.
 413  */
 414 __weak int lcd_get_size(int *line_length)
 415 {
 416         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 417         return *line_length * panel_info.vl_row;
 418 }
 419
 420 int drv_lcd_init(void)
 421 {
 422         struct stdio_dev lcddev;
 423         int rc;
 424
 425         lcd_base = map_sysmem(gd->fb_base, 0);
 426
 427         lcd_init(lcd_base);             /* LCD initialization */
 428
 429         /* Device initialization */
 430         memset(&lcddev, 0, sizeof(lcddev));
 431
 432         strcpy(lcddev.name, "lcd");
 433         lcddev.ext   = 0;                       /* No extensions */
 434         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 435         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 436         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 437
 438         rc = stdio_register(&lcddev);
 439
 440         return (rc == 0) ? 1 : rc;
 441 }
 442
 443 /*----------------------------------------------------------------------*/
 444 void lcd_clear(void)
 445 {
 446 #if LCD_BPP == LCD_MONOCHROME
 447         /* Setting the palette */
 448         lcd_initcolregs();
 449
 450 #elif LCD_BPP == LCD_COLOR8
 451         /* Setting the palette */
 452         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 453         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 454         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 455         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 456         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 457         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 458         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 459         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 460         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 461 #endif
 462
 463 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 464         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 465         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 466 #else
 467         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 468         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 469 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 470
 471 #ifdef  LCD_TEST_PATTERN
 472         test_pattern();
 473 #else
 474         /* set framebuffer to background color */
 475 #if (LCD_BPP != LCD_COLOR32)
 476         memset((char *)lcd_base,
 477                 COLOR_MASK(lcd_color_bg),
 478                 lcd_line_length * panel_info.vl_row);
 479 #else
 480         u32 *ppix = lcd_base;
 481         u32 i;
 482         for (i = 0;
 483            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 484            i++) {
 485                 *ppix++ = COLOR_MASK(lcd_color_bg);
 486         }
 487 #endif
 488 #endif
 489         /* Paint the logo and retrieve LCD base address */
 490         debug("[LCD] Drawing the logo...\n");
 491         lcd_console_address = lcd_logo();
 492
 493         console_col = 0;
 494         console_row = 0;
 495         lcd_sync();
 496 }
 497
 498 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 499                         char *const argv[])
 500 {
 501         lcd_clear();
 502         return 0;
 503 }
 504
 505 U_BOOT_CMD(
 506         cls,    1,      1,      do_lcd_clear,
 507         "clear screen",
 508         ""
 509 );
 510
 511 /*----------------------------------------------------------------------*/
 512
 513 static int lcd_init(void *lcdbase)
 514 {
 515         /* Initialize the lcd controller */
 516         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 517
 518         lcd_ctrl_init(lcdbase);
 519
 520         /*
 521          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 522          * the 'lcdbase' argument and uses custom lcd base address
 523          * by setting up gd->fb_base. Check for this condition and fixup
 524          * 'lcd_base' address.
 525          */
 526         if (map_to_sysmem(lcdbase) != gd->fb_base)
 527                 lcd_base = map_sysmem(gd->fb_base, 0);
 528
 529         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 530
 531         lcd_get_size(&lcd_line_length);
 532         lcd_is_enabled = 1;
 533         lcd_clear();
 534         lcd_enable();
 535
 536         /* Initialize the console */
 537         console_col = 0;
 538 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 539         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 540 #else
 541         console_row = 1;        /* leave 1 blank line below logo */
 542 #endif
 543
 544         return 0;
 545 }
 546
 547
 548 /************************************************************************/
 549 /* ** ROM capable initialization part - needed to reserve FB memory     */
 550 /************************************************************************/
 551 /*
 552  * This is called early in the system initialization to grab memory
 553  * for the LCD controller.
 554  * Returns new address for monitor, after reserving LCD buffer memory
 555  *
 556  * Note that this is running from ROM, so no write access to global data.
 557  */
 558 ulong lcd_setmem(ulong addr)
 559 {
 560         ulong size;
 561         int line_length;
 562
 563         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 564                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 565
 566         size = lcd_get_size(&line_length);
 567
 568         /* Round up to nearest full page, or MMU section if defined */
 569         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 570         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 571
 572         /* Allocate pages for the frame buffer. */
 573         addr -= size;
 574
 575         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 576               size >> 10, addr);
 577
 578         return addr;
 579 }
 580
 581 /*----------------------------------------------------------------------*/
 582
 583 static void lcd_setfgcolor(int color)
 584 {
 585         lcd_color_fg = color;
 586 }
 587
 588 /*----------------------------------------------------------------------*/
 589
 590 static void lcd_setbgcolor(int color)
 591 {
 592         lcd_color_bg = color;
 593 }
 594
 595 /************************************************************************/
 596 /* ** Chipset depending Bitmap / Logo stuff...                          */
 597 /************************************************************************/
 598 static inline ushort *configuration_get_cmap(void)
 599 {
 600 #if defined CONFIG_CPU_PXA
 601         struct pxafb_info *fbi = &panel_info.pxa;
 602         return (ushort *)fbi->palette;
 603 #elif defined(CONFIG_MPC823)
 604         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 605         cpm8xx_t *cp = &(immr->im_cpm);
 606         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 607 #elif defined(CONFIG_ATMEL_LCD)
 608         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 609 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 610         return panel_info.cmap;
 611 #elif defined(CONFIG_LCD_LOGO)
 612         return bmp_logo_palette;
 613 #else
 614         return NULL;
 615 #endif
 616 }
 617
 618 #ifdef CONFIG_LCD_LOGO
 619 void bitmap_plot(int x, int y)
 620 {
 621 #ifdef CONFIG_ATMEL_LCD
 622         uint *cmap = (uint *)bmp_logo_palette;
 623 #else
 624         ushort *cmap = (ushort *)bmp_logo_palette;
 625 #endif
 626         ushort i, j;
 627         uchar *bmap;
 628         uchar *fb;
 629         ushort *fb16;
 630 #if defined(CONFIG_MPC823)
 631         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 632         cpm8xx_t *cp = &(immr->im_cpm);
 633 #endif
 634         unsigned bpix = NBITS(panel_info.vl_bpix);
 635
 636         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 637                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 638                 ARRAY_SIZE(bmp_logo_palette));
 639
 640         bmap = &bmp_logo_bitmap[0];
 641         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 642
 643         if (bpix < 12) {
 644                 /* Leave room for default color map
 645                  * default case: generic system with no cmap (most likely 16bpp)
 646                  * cmap was set to the source palette, so no change is done.
 647                  * This avoids even more ifdefs in the next stanza
 648                  */
 649 #if defined(CONFIG_MPC823)
 650                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 651 #elif defined(CONFIG_ATMEL_LCD)
 652                 cmap = (uint *)configuration_get_cmap();
 653 #else
 654                 cmap = configuration_get_cmap();
 655 #endif
 656
 657                 WATCHDOG_RESET();
 658
 659                 /* Set color map */
 660                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 661                         ushort colreg = bmp_logo_palette[i];
 662 #ifdef CONFIG_ATMEL_LCD
 663                         uint lut_entry;
 664 #ifdef CONFIG_ATMEL_LCD_BGR555
 665                         lut_entry = ((colreg & 0x000F) << 11) |
 666                                         ((colreg & 0x00F0) <<  2) |
 667                                         ((colreg & 0x0F00) >>  7);
 668 #else /* CONFIG_ATMEL_LCD_RGB565 */
 669                         lut_entry = ((colreg & 0x000F) << 1) |
 670                                         ((colreg & 0x00F0) << 3) |
 671                                         ((colreg & 0x0F00) << 4);
 672 #endif
 673                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 674                         cmap++;
 675 #else /* !CONFIG_ATMEL_LCD */
 676                         *cmap++ = colreg;
 677 #endif /* CONFIG_ATMEL_LCD */
 678                 }
 679
 680                 WATCHDOG_RESET();
 681
 682                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 683                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 684                         bmap += BMP_LOGO_WIDTH;
 685                         fb += panel_info.vl_col;
 686                 }
 687         }
 688         else { /* true color mode */
 689                 u16 col16;
 690                 fb16 = (ushort *)fb;
 691                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 692                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 693                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 694                                 fb16[j] =
 695                                         ((col16 & 0x000F) << 1) |
 696                                         ((col16 & 0x00F0) << 3) |
 697                                         ((col16 & 0x0F00) << 4);
 698                                 }
 699                         bmap += BMP_LOGO_WIDTH;
 700                         fb16 += panel_info.vl_col;
 701                 }
 702         }
 703
 704         WATCHDOG_RESET();
 705         lcd_sync();
 706 }
 707 #else
 708 static inline void bitmap_plot(int x, int y) {}
 709 #endif /* CONFIG_LCD_LOGO */
 710
 711 /*----------------------------------------------------------------------*/
 712 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 713 /*
 714  * Display the BMP file located at address bmp_image.
 715  * Only uncompressed.
 716  */
 717
 718 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 719 #define BMP_ALIGN_CENTER        0x7FFF
 720
 721 static void splash_align_axis(int *axis, unsigned long panel_size,
 722                                         unsigned long picture_size)
 723 {
 724         unsigned long panel_picture_delta = panel_size - picture_size;
 725         unsigned long axis_alignment;
 726
 727         if (*axis == BMP_ALIGN_CENTER)
 728                 axis_alignment = panel_picture_delta / 2;
 729         else if (*axis < 0)
 730                 axis_alignment = panel_picture_delta + *axis + 1;
 731         else
 732                 return;
 733
 734         *axis = max(0, (int)axis_alignment);
 735 }
 736 #endif
 737
 738
 739 #ifdef CONFIG_LCD_BMP_RLE8
 740
 741 #define BMP_RLE8_ESCAPE         0
 742 #define BMP_RLE8_EOL            0
 743 #define BMP_RLE8_EOBMP          1
 744 #define BMP_RLE8_DELTA          2
 745
 746 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 747                                   int cnt)
 748 {
 749         while (cnt > 0) {
 750                 *(*fbp)++ = cmap[*bmap++];
 751                 cnt--;
 752         }
 753 }
 754
 755 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 756 {
 757         ushort *fb = *fbp;
 758         int cnt_8copy = cnt >> 3;
 759
 760         cnt -= cnt_8copy << 3;
 761         while (cnt_8copy > 0) {
 762                 *fb++ = c;
 763                 *fb++ = c;
 764                 *fb++ = c;
 765                 *fb++ = c;
 766                 *fb++ = c;
 767                 *fb++ = c;
 768                 *fb++ = c;
 769                 *fb++ = c;
 770                 cnt_8copy--;
 771         }
 772         while (cnt > 0) {
 773                 *fb++ = c;
 774                 cnt--;
 775         }
 776         *fbp = fb;
 777 }
 778
 779 /*
 780  * Do not call this function directly, must be called from lcd_display_bitmap.
 781  */
 782 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 783                                     int x_off, int y_off)
 784 {
 785         uchar *bmap;
 786         ulong width, height;
 787         ulong cnt, runlen;
 788         int x, y;
 789         int decode = 1;
 790
 791         width = get_unaligned_le32(&bmp->header.width);
 792         height = get_unaligned_le32(&bmp->header.height);
 793         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 794
 795         x = 0;
 796         y = height - 1;
 797
 798         while (decode) {
 799                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 800                         switch (bmap[1]) {
 801                         case BMP_RLE8_EOL:
 802                                 /* end of line */
 803                                 bmap += 2;
 804                                 x = 0;
 805                                 y--;
 806                                 /* 16bpix, 2-byte per pixel, width should *2 */
 807                                 fb -= (width * 2 + lcd_line_length);
 808                                 break;
 809                         case BMP_RLE8_EOBMP:
 810                                 /* end of bitmap */
 811                                 decode = 0;
 812                                 break;
 813                         case BMP_RLE8_DELTA:
 814                                 /* delta run */
 815                                 x += bmap[2];
 816                                 y -= bmap[3];
 817                                 /* 16bpix, 2-byte per pixel, x should *2 */
 818                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 819                                         * lcd_line_length + (x + x_off) * 2);
 820                                 bmap += 4;
 821                                 break;
 822                         default:
 823                                 /* unencoded run */
 824                                 runlen = bmap[1];
 825                                 bmap += 2;
 826                                 if (y < height) {
 827                                         if (x < width) {
 828                                                 if (x + runlen > width)
 829                                                         cnt = width - x;
 830                                                 else
 831                                                         cnt = runlen;
 832                                                 draw_unencoded_bitmap(
 833                                                         (ushort **)&fb,
 834                                                         bmap, cmap, cnt);
 835                                         }
 836                                         x += runlen;
 837                                 }
 838                                 bmap += runlen;
 839                                 if (runlen & 1)
 840                                         bmap++;
 841                         }
 842                 } else {
 843                         /* encoded run */
 844                         if (y < height) {
 845                                 runlen = bmap[0];
 846                                 if (x < width) {
 847                                         /* aggregate the same code */
 848                                         while (bmap[0] == 0xff &&
 849                                                bmap[2] != BMP_RLE8_ESCAPE &&
 850                                                bmap[1] == bmap[3]) {
 851                                                 runlen += bmap[2];
 852                                                 bmap += 2;
 853                                         }
 854                                         if (x + runlen > width)
 855                                                 cnt = width - x;
 856                                         else
 857                                                 cnt = runlen;
 858                                         draw_encoded_bitmap((ushort **)&fb,
 859                                                 cmap[bmap[1]], cnt);
 860                                 }
 861                                 x += runlen;
 862                         }
 863                         bmap += 2;
 864                 }
 865         }
 866 }
 867 #endif
 868
 869 #if defined(CONFIG_MPC823)
 870 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 871 #else
 872 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 873 #endif
 874
 875 #if defined(CONFIG_BMP_16BPP)
 876 #if defined(CONFIG_ATMEL_LCD_BGR555)
 877 static inline void fb_put_word(uchar **fb, uchar **from)
 878 {
 879         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 880         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 881         *from += 2;
 882 }
 883 #else
 884 static inline void fb_put_word(uchar **fb, uchar **from)
 885 {
 886         *(*fb)++ = *(*from)++;
 887         *(*fb)++ = *(*from)++;
 888 }
 889 #endif
 890 #endif /* CONFIG_BMP_16BPP */
 891
 892 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 893 {
 894         ushort *cmap = NULL;
 895         ushort *cmap_base = NULL;
 896         ushort i, j;
 897         uchar *fb;
 898         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 899         uchar *bmap;
 900         ushort padded_width;
 901         unsigned long width, height, byte_width;
 902         unsigned long pwidth = panel_info.vl_col;
 903         unsigned colors, bpix, bmp_bpix;
 904
 905         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 906                 bmp->header.signature[1] == 'M')) {
 907                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 908
 909                 return 1;
 910         }
 911
 912         width = get_unaligned_le32(&bmp->header.width);
 913         height = get_unaligned_le32(&bmp->header.height);
 914         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 915
 916         colors = 1 << bmp_bpix;
 917
 918         bpix = NBITS(panel_info.vl_bpix);
 919
 920         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 921                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 922                         bpix, bmp_bpix);
 923
 924                 return 1;
 925         }
 926
 927         /*
 928          * We support displaying 8bpp BMPs on 16bpp LCDs
 929          * and displaying 24bpp BMPs on 32bpp LCDs
 930          * */
 931         if (bpix != bmp_bpix &&
 932             !(bmp_bpix == 8 && bpix == 16) &&
 933             !(bmp_bpix == 24 && bpix == 32)) {
 934                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 935                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 936                 return 1;
 937         }
 938
 939         debug("Display-bmp: %d x %d  with %d colors\n",
 940                 (int)width, (int)height, (int)colors);
 941
 942         if (bmp_bpix == 8) {
 943                 cmap = configuration_get_cmap();
 944                 cmap_base = cmap;
 945
 946                 /* Set color map */
 947                 for (i = 0; i < colors; ++i) {
 948                         bmp_color_table_entry_t cte = bmp->color_table[i];
 949 #if !defined(CONFIG_ATMEL_LCD)
 950                         ushort colreg =
 951                                 ( ((cte.red)   << 8) & 0xf800) |
 952                                 ( ((cte.green) << 3) & 0x07e0) |
 953                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 954                         *cmap = colreg;
 955 #if defined(CONFIG_MPC823)
 956                         cmap--;
 957 #else
 958                         cmap++;
 959 #endif
 960 #else /* CONFIG_ATMEL_LCD */
 961                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 962 #endif
 963                 }
 964         }
 965
 966         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 967
 968 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 969         splash_align_axis(&x, pwidth, width);
 970         splash_align_axis(&y, panel_info.vl_row, height);
 971 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 972
 973         if ((x + width) > pwidth)
 974                 width = pwidth - x;
 975         if ((y + height) > panel_info.vl_row)
 976                 height = panel_info.vl_row - y;
 977
 978         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 979         fb   = (uchar *)(lcd_base +
 980                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 981
 982         switch (bmp_bpix) {
 983         case 1: /* pass through */
 984         case 8: {
 985 #ifdef CONFIG_LCD_BMP_RLE8
 986                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 987                 if (compression == BMP_BI_RLE8) {
 988                         if (bpix != 16) {
 989                                 /* TODO implement render code for bpix != 16 */
 990                                 printf("Error: only support 16 bpix");
 991                                 return 1;
 992                         }
 993                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 994                         break;
 995                 }
 996 #endif
 997
 998                 if (bpix != 16)
 999                         byte_width = width;
1000                 else
1001                         byte_width = width * 2;
1002
1003                 for (i = 0; i < height; ++i) {
1004                         WATCHDOG_RESET();
1005                         for (j = 0; j < width; j++) {
1006                                 if (bpix != 16) {
1007                                         FB_PUT_BYTE(fb, bmap);
1008                                 } else {
1009                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1010                                         fb += sizeof(uint16_t) / sizeof(*fb);
1011                                 }
1012                         }
1013                         bmap += (padded_width - width);
1014                         fb -= byte_width + lcd_line_length;
1015                 }
1016                 break;
1017         }
1018 #if defined(CONFIG_BMP_16BPP)
1019         case 16:
1020                 for (i = 0; i < height; ++i) {
1021                         WATCHDOG_RESET();
1022                         for (j = 0; j < width; j++)
1023                                 fb_put_word(&fb, &bmap);
1024
1025                         bmap += (padded_width - width) * 2;
1026                         fb -= width * 2 + lcd_line_length;
1027                 }
1028                 break;
1029 #endif /* CONFIG_BMP_16BPP */
1030 #if defined(CONFIG_BMP_24BMP)
1031         case 24:
1032                 for (i = 0; i < height; ++i) {
1033                         for (j = 0; j < width; j++) {
1034                                 *(fb++) = *(bmap++);
1035                                 *(fb++) = *(bmap++);
1036                                 *(fb++) = *(bmap++);
1037                                 *(fb++) = 0;
1038                         }
1039                         fb -= lcd_line_length + width * (bpix / 8);
1040                 }
1041                 break;
1042 #endif /* CONFIG_BMP_24BMP */
1043 #if defined(CONFIG_BMP_32BPP)
1044         case 32:
1045                 for (i = 0; i < height; ++i) {
1046                         for (j = 0; j < width; j++) {
1047                                 *(fb++) = *(bmap++);
1048                                 *(fb++) = *(bmap++);
1049                                 *(fb++) = *(bmap++);
1050                                 *(fb++) = *(bmap++);
1051                         }
1052                         fb -= lcd_line_length + width * (bpix / 8);
1053                 }
1054                 break;
1055 #endif /* CONFIG_BMP_32BPP */
1056         default:
1057                 break;
1058         };
1059
1060         lcd_sync();
1061         return 0;
1062 }
1063 #endif
1064
1065 static void *lcd_logo(void)
1066 {
1067 #ifdef CONFIG_SPLASH_SCREEN
1068         char *s;
1069         ulong addr;
1070         static int do_splash = 1;
1071
1072         if (do_splash && (s = getenv("splashimage")) != NULL) {
1073                 int x = 0, y = 0;
1074                 do_splash = 0;
1075
1076                 if (splash_screen_prepare())
1077                         return (void *)lcd_base;
1078
1079                 addr = simple_strtoul (s, NULL, 16);
1080
1081                 splash_get_pos(&x, &y);
1082
1083                 if (bmp_display(addr, x, y) == 0)
1084                         return (void *)lcd_base;
1085         }
1086 #endif /* CONFIG_SPLASH_SCREEN */
1087
1088         bitmap_plot(0, 0);
1089
1090 #ifdef CONFIG_LCD_INFO
1091         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1092         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1093         lcd_show_board_info();
1094 #endif /* CONFIG_LCD_INFO */
1095
1096 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1097         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1098 #else
1099         return (void *)lcd_base;
1100 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1101 }
1102
1103 #ifdef CONFIG_SPLASHIMAGE_GUARD
1104 static int on_splashimage(const char *name, const char *value, enum env_op op,
1105         int flags)
1106 {
1107         ulong addr;
1108         int aligned;
1109
1110         if (op == env_op_delete)
1111                 return 0;
1112
1113         addr = simple_strtoul(value, NULL, 16);
1114         /* See README.displaying-bmps */
1115         aligned = (addr % 4 == 2);
1116         if (!aligned) {
1117                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1118                 return -1;
1119         }
1120
1121         return 0;
1122 }
1123
1124 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1125 #endif
1126
1127 void lcd_position_cursor(unsigned col, unsigned row)
1128 {
1129         console_col = min_t(short, col, CONSOLE_COLS - 1);
1130         console_row = min_t(short, row, CONSOLE_ROWS - 1);
1131 }
1132
1133 int lcd_get_pixel_width(void)
1134 {
1135         return panel_info.vl_col;
1136 }
1137
1138 int lcd_get_pixel_height(void)
1139 {
1140         return panel_info.vl_row;
1141 }
1142
1143 int lcd_get_screen_rows(void)
1144 {
1145         return CONSOLE_ROWS;
1146 }
1147
1148 int lcd_get_screen_columns(void)
1149 {
1150         return CONSOLE_COLS;
1151 }
1152
1153 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1154 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1155 {
1156 #if LCD_BPP == LCD_COLOR16
1157         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1158                                        panel_info.vl_col, panel_info.vl_row,
1159                                        panel_info.vl_col * 2, "r5g6b5");
1160 #else
1161         return -1;
1162 #endif
1163 }
1164
1165 int lcd_dt_simplefb_add_node(void *blob)
1166 {
1167         static const char compat[] = "simple-framebuffer";
1168         static const char disabled[] = "disabled";
1169         int off, ret;
1170
1171         off = fdt_add_subnode(blob, 0, "framebuffer");
1172         if (off < 0)
1173                 return -1;
1174
1175         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1176         if (ret < 0)
1177                 return -1;
1178
1179         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1180         if (ret < 0)
1181                 return -1;
1182
1183         return lcd_dt_simplefb_configure_node(blob, off);
1184 }
1185
1186 int lcd_dt_simplefb_enable_existing_node(void *blob)
1187 {
1188         int off;
1189
1190         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1191         if (off < 0)
1192                 return -1;
1193
1194         return lcd_dt_simplefb_configure_node(blob, off);
1195 }
1196 #endif