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  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 /************************************************************************/
  27 /* ** HEADER FILES                                                      */
  28 /************************************************************************/
  29
  30 /* #define DEBUG */
  31
  32 #include <config.h>
  33 #include <common.h>
  34 #include <command.h>
  35 #include <stdarg.h>
  36 #include <search.h>
  37 #include <env_callback.h>
  38 #include <linux/types.h>
  39 #include <stdio_dev.h>
  40 #if defined(CONFIG_POST)
  41 #include <post.h>
  42 #endif
  43 #include <lcd.h>
  44 #include <watchdog.h>
  45
  46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  47         defined(CONFIG_CPU_MONAHANS)
  48 #define CONFIG_CPU_PXA
  49 #include <asm/byteorder.h>
  50 #endif
  51
  52 #if defined(CONFIG_MPC823)
  53 #include <lcdvideo.h>
  54 #endif
  55
  56 #if defined(CONFIG_ATMEL_LCD)
  57 #include <atmel_lcdc.h>
  58 #endif
  59
  60 /************************************************************************/
  61 /* ** FONT DATA                                                         */
  62 /************************************************************************/
  63 #include <video_font.h>         /* Get font data, width and height      */
  64 #include <video_font_data.h>
  65
  66 /************************************************************************/
  67 /* ** LOGO DATA                                                         */
  68 /************************************************************************/
  69 #ifdef CONFIG_LCD_LOGO
  70 # include <bmp_logo.h>          /* Get logo data, width and height      */
  71 # include <bmp_logo_data.h>
  72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  73 #  error Default Color Map overlaps with Logo Color Map
  74 # endif
  75 #endif
  76
  77 #ifndef CONFIG_LCD_ALIGNMENT
  78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  79 #endif
  80
  81 /* By default we scroll by a single line */
  82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  83 #define CONFIG_CONSOLE_SCROLL_LINES 1
  84 #endif
  85
  86 /************************************************************************/
  87 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  88 /************************************************************************/
  89 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  90 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  91                                         / VIDEO_FONT_HEIGHT)
  92 #else
  93 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  94 #endif
  95
  96 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
  97 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  98 #define CONSOLE_ROW_FIRST       lcd_console_address
  99 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 100 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 101                                         - CONSOLE_ROW_SIZE)
 102 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 103 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 104
 105 #if LCD_BPP == LCD_MONOCHROME
 106 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 107                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 108 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
 109 # define COLOR_MASK(c)          (c)
 110 #else
 111 # error Unsupported LCD BPP.
 112 #endif
 113
 114 DECLARE_GLOBAL_DATA_PTR;
 115
 116 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 117 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
 118 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 119
 120 static int lcd_init(void *lcdbase);
 121
 122 static void *lcd_logo(void);
 123
 124 static int lcd_getbgcolor(void);
 125 static void lcd_setfgcolor(int color);
 126 static void lcd_setbgcolor(int color);
 127
 128 static int lcd_color_fg;
 129 static int lcd_color_bg;
 130 int lcd_line_length;
 131
 132 char lcd_is_enabled = 0;
 133
 134 static short console_col;
 135 static short console_row;
 136
 137 static void *lcd_console_address;
 138 static void *lcd_base;                  /* Start of framebuffer memory  */
 139
 140 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 141
 142 /************************************************************************/
 143
 144 /* Flush LCD activity to the caches */
 145 void lcd_sync(void)
 146 {
 147         /*
 148          * flush_dcache_range() is declared in common.h but it seems that some
 149          * architectures do not actually implement it. Is there a way to find
 150          * out whether it exists? For now, ARM is safe.
 151          */
 152 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 153         int line_length;
 154
 155         if (lcd_flush_dcache)
 156                 flush_dcache_range((u32)lcd_base,
 157                         (u32)(lcd_base + lcd_get_size(&line_length)));
 158 #endif
 159 }
 160
 161 void lcd_set_flush_dcache(int flush)
 162 {
 163         lcd_flush_dcache = (flush != 0);
 164 }
 165
 166 /*----------------------------------------------------------------------*/
 167
 168 static void console_scrollup(void)
 169 {
 170         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 171
 172         /* Copy up rows ignoring those that will be overwritten */
 173         memcpy(CONSOLE_ROW_FIRST,
 174                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 175                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 176
 177         /* Clear the last rows */
 178         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 179                 COLOR_MASK(lcd_color_bg),
 180                 CONSOLE_ROW_SIZE * rows);
 181
 182         lcd_sync();
 183         console_row -= rows;
 184 }
 185
 186 /*----------------------------------------------------------------------*/
 187
 188 static inline void console_back(void)
 189 {
 190         if (--console_col < 0) {
 191                 console_col = CONSOLE_COLS-1 ;
 192                 if (--console_row < 0)
 193                         console_row = 0;
 194         }
 195
 196         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 197                 console_row * VIDEO_FONT_HEIGHT, ' ');
 198 }
 199
 200 /*----------------------------------------------------------------------*/
 201
 202 static inline void console_newline(void)
 203 {
 204         console_col = 0;
 205
 206         /* Check if we need to scroll the terminal */
 207         if (++console_row >= CONSOLE_ROWS)
 208                 console_scrollup();
 209         else
 210                 lcd_sync();
 211 }
 212
 213 /*----------------------------------------------------------------------*/
 214
 215 void lcd_putc(const char c)
 216 {
 217         if (!lcd_is_enabled) {
 218                 serial_putc(c);
 219
 220                 return;
 221         }
 222
 223         switch (c) {
 224         case '\r':
 225                 console_col = 0;
 226
 227                 return;
 228         case '\n':
 229                 console_newline();
 230
 231                 return;
 232         case '\t':      /* Tab (8 chars alignment) */
 233                 console_col +=  8;
 234                 console_col &= ~7;
 235
 236                 if (console_col >= CONSOLE_COLS)
 237                         console_newline();
 238
 239                 return;
 240         case '\b':
 241                 console_back();
 242
 243                 return;
 244         default:
 245                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 246                         console_row * VIDEO_FONT_HEIGHT, c);
 247                 if (++console_col >= CONSOLE_COLS)
 248                         console_newline();
 249         }
 250 }
 251
 252 /*----------------------------------------------------------------------*/
 253
 254 void lcd_puts(const char *s)
 255 {
 256         if (!lcd_is_enabled) {
 257                 serial_puts(s);
 258
 259                 return;
 260         }
 261
 262         while (*s)
 263                 lcd_putc(*s++);
 264
 265         lcd_sync();
 266 }
 267
 268 /*----------------------------------------------------------------------*/
 269
 270 void lcd_printf(const char *fmt, ...)
 271 {
 272         va_list args;
 273         char buf[CONFIG_SYS_PBSIZE];
 274
 275         va_start(args, fmt);
 276         vsprintf(buf, fmt, args);
 277         va_end(args);
 278
 279         lcd_puts(buf);
 280 }
 281
 282 /************************************************************************/
 283 /* ** Low-Level Graphics Routines                                       */
 284 /************************************************************************/
 285
 286 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 287 {
 288         uchar *dest;
 289         ushort row;
 290
 291 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 292         y += BMP_LOGO_HEIGHT;
 293 #endif
 294
 295 #if LCD_BPP == LCD_MONOCHROME
 296         ushort off  = x * (1 << LCD_BPP) % 8;
 297 #endif
 298
 299         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 300
 301         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 302                 uchar *s = str;
 303                 int i;
 304 #if LCD_BPP == LCD_COLOR16
 305                 ushort *d = (ushort *)dest;
 306 #else
 307                 uchar *d = dest;
 308 #endif
 309
 310 #if LCD_BPP == LCD_MONOCHROME
 311                 uchar rest = *d & -(1 << (8 - off));
 312                 uchar sym;
 313 #endif
 314                 for (i = 0; i < count; ++i) {
 315                         uchar c, bits;
 316
 317                         c = *s++;
 318                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 319
 320 #if LCD_BPP == LCD_MONOCHROME
 321                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 322                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 323
 324                         *d++ = rest | (sym >> off);
 325                         rest = sym << (8-off);
 326 #elif LCD_BPP == LCD_COLOR8
 327                         for (c = 0; c < 8; ++c) {
 328                                 *d++ = (bits & 0x80) ?
 329                                                 lcd_color_fg : lcd_color_bg;
 330                                 bits <<= 1;
 331                         }
 332 #elif LCD_BPP == LCD_COLOR16
 333                         for (c = 0; c < 8; ++c) {
 334                                 *d++ = (bits & 0x80) ?
 335                                                 lcd_color_fg : lcd_color_bg;
 336                                 bits <<= 1;
 337                         }
 338 #endif
 339                 }
 340 #if LCD_BPP == LCD_MONOCHROME
 341                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 342 #endif
 343         }
 344 }
 345
 346 /*----------------------------------------------------------------------*/
 347
 348 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 349 {
 350         lcd_drawchars(x, y, s, strlen((char *)s));
 351 }
 352
 353 /*----------------------------------------------------------------------*/
 354
 355 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 356 {
 357         lcd_drawchars(x, y, &c, 1);
 358 }
 359
 360 /************************************************************************/
 361 /**  Small utility to check that you got the colours right              */
 362 /************************************************************************/
 363 #ifdef LCD_TEST_PATTERN
 364
 365 #define N_BLK_VERT      2
 366 #define N_BLK_HOR       3
 367
 368 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 369         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 370         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 371 };
 372
 373 static void test_pattern(void)
 374 {
 375         ushort v_max  = panel_info.vl_row;
 376         ushort h_max  = panel_info.vl_col;
 377         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 378         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 379         ushort v, h;
 380         uchar *pix = (uchar *)lcd_base;
 381
 382         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 383                 h_max, v_max, h_step, v_step);
 384
 385         /* WARNING: Code silently assumes 8bit/pixel */
 386         for (v = 0; v < v_max; ++v) {
 387                 uchar iy = v / v_step;
 388                 for (h = 0; h < h_max; ++h) {
 389                         uchar ix = N_BLK_HOR * iy + h / h_step;
 390                         *pix++ = test_colors[ix];
 391                 }
 392         }
 393 }
 394 #endif /* LCD_TEST_PATTERN */
 395
 396
 397 /************************************************************************/
 398 /* ** GENERIC Initialization Routines                                   */
 399 /************************************************************************/
 400
 401 int lcd_get_size(int *line_length)
 402 {
 403         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 404         return *line_length * panel_info.vl_row;
 405 }
 406
 407 int drv_lcd_init(void)
 408 {
 409         struct stdio_dev lcddev;
 410         int rc;
 411
 412         lcd_base = (void *) gd->fb_base;
 413
 414         lcd_get_size(&lcd_line_length);
 415
 416         lcd_init(lcd_base);             /* LCD initialization */
 417
 418         /* Device initialization */
 419         memset(&lcddev, 0, sizeof(lcddev));
 420
 421         strcpy(lcddev.name, "lcd");
 422         lcddev.ext   = 0;                       /* No extensions */
 423         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 424         lcddev.putc  = lcd_putc;                /* 'putc' function */
 425         lcddev.puts  = lcd_puts;                /* 'puts' function */
 426
 427         rc = stdio_register(&lcddev);
 428
 429         return (rc == 0) ? 1 : rc;
 430 }
 431
 432 /*----------------------------------------------------------------------*/
 433 void lcd_clear(void)
 434 {
 435 #if LCD_BPP == LCD_MONOCHROME
 436         /* Setting the palette */
 437         lcd_initcolregs();
 438
 439 #elif 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 #else
 456         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 457         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 458 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 459
 460 #ifdef  LCD_TEST_PATTERN
 461         test_pattern();
 462 #else
 463         /* set framebuffer to background color */
 464         memset((char *)lcd_base,
 465                 COLOR_MASK(lcd_getbgcolor()),
 466                 lcd_line_length * panel_info.vl_row);
 467 #endif
 468         /* Paint the logo and retrieve LCD base address */
 469         debug("[LCD] Drawing the logo...\n");
 470         lcd_console_address = lcd_logo();
 471
 472         console_col = 0;
 473         console_row = 0;
 474         lcd_sync();
 475 }
 476
 477 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 478                         char *const argv[])
 479 {
 480         lcd_clear();
 481         return 0;
 482 }
 483
 484 U_BOOT_CMD(
 485         cls,    1,      1,      do_lcd_clear,
 486         "clear screen",
 487         ""
 488 );
 489
 490 /*----------------------------------------------------------------------*/
 491
 492 static int lcd_init(void *lcdbase)
 493 {
 494         /* Initialize the lcd controller */
 495         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 496
 497         lcd_ctrl_init(lcdbase);
 498         lcd_is_enabled = 1;
 499         lcd_clear();
 500         lcd_enable();
 501
 502         /* Initialize the console */
 503         console_col = 0;
 504 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 505         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 506 #else
 507         console_row = 1;        /* leave 1 blank line below logo */
 508 #endif
 509
 510         return 0;
 511 }
 512
 513
 514 /************************************************************************/
 515 /* ** ROM capable initialization part - needed to reserve FB memory     */
 516 /************************************************************************/
 517 /*
 518  * This is called early in the system initialization to grab memory
 519  * for the LCD controller.
 520  * Returns new address for monitor, after reserving LCD buffer memory
 521  *
 522  * Note that this is running from ROM, so no write access to global data.
 523  */
 524 ulong lcd_setmem(ulong addr)
 525 {
 526         ulong size;
 527         int line_length;
 528
 529         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 530                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 531
 532         size = lcd_get_size(&line_length);
 533
 534         /* Round up to nearest full page, or MMU section if defined */
 535         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 536         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 537
 538         /* Allocate pages for the frame buffer. */
 539         addr -= size;
 540
 541         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 542               size >> 10, addr);
 543
 544         return addr;
 545 }
 546
 547 /*----------------------------------------------------------------------*/
 548
 549 static void lcd_setfgcolor(int color)
 550 {
 551         lcd_color_fg = color;
 552 }
 553
 554 /*----------------------------------------------------------------------*/
 555
 556 static void lcd_setbgcolor(int color)
 557 {
 558         lcd_color_bg = color;
 559 }
 560
 561 /*----------------------------------------------------------------------*/
 562
 563 int lcd_getfgcolor(void)
 564 {
 565         return lcd_color_fg;
 566 }
 567
 568 /*----------------------------------------------------------------------*/
 569
 570 static int lcd_getbgcolor(void)
 571 {
 572         return lcd_color_bg;
 573 }
 574
 575 /************************************************************************/
 576 /* ** Chipset depending Bitmap / Logo stuff...                          */
 577 /************************************************************************/
 578 static inline ushort *configuration_get_cmap(void)
 579 {
 580 #if defined CONFIG_CPU_PXA
 581         struct pxafb_info *fbi = &panel_info.pxa;
 582         return (ushort *)fbi->palette;
 583 #elif defined(CONFIG_MPC823)
 584         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 585         cpm8xx_t *cp = &(immr->im_cpm);
 586         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 587 #elif defined(CONFIG_ATMEL_LCD)
 588         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 589 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 590         return panel_info.cmap;
 591 #elif defined(CONFIG_LCD_LOGO)
 592         return bmp_logo_palette;
 593 #else
 594         return NULL;
 595 #endif
 596 }
 597
 598 #ifdef CONFIG_LCD_LOGO
 599 void bitmap_plot(int x, int y)
 600 {
 601 #ifdef CONFIG_ATMEL_LCD
 602         uint *cmap = (uint *)bmp_logo_palette;
 603 #else
 604         ushort *cmap = (ushort *)bmp_logo_palette;
 605 #endif
 606         ushort i, j;
 607         uchar *bmap;
 608         uchar *fb;
 609         ushort *fb16;
 610 #if defined(CONFIG_MPC823)
 611         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 612         cpm8xx_t *cp = &(immr->im_cpm);
 613 #endif
 614         unsigned bpix = NBITS(panel_info.vl_bpix);
 615
 616         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 617                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 618                 ARRAY_SIZE(bmp_logo_palette));
 619
 620         bmap = &bmp_logo_bitmap[0];
 621         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 622
 623         if (bpix < 12) {
 624                 /* Leave room for default color map
 625                  * default case: generic system with no cmap (most likely 16bpp)
 626                  * cmap was set to the source palette, so no change is done.
 627                  * This avoids even more ifdefs in the next stanza
 628                  */
 629 #if defined(CONFIG_MPC823)
 630                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 631 #elif defined(CONFIG_ATMEL_LCD)
 632                 cmap = (uint *)configuration_get_cmap();
 633 #else
 634                 cmap = configuration_get_cmap();
 635 #endif
 636
 637                 WATCHDOG_RESET();
 638
 639                 /* Set color map */
 640                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 641                         ushort colreg = bmp_logo_palette[i];
 642 #ifdef CONFIG_ATMEL_LCD
 643                         uint lut_entry;
 644 #ifdef CONFIG_ATMEL_LCD_BGR555
 645                         lut_entry = ((colreg & 0x000F) << 11) |
 646                                         ((colreg & 0x00F0) <<  2) |
 647                                         ((colreg & 0x0F00) >>  7);
 648 #else /* CONFIG_ATMEL_LCD_RGB565 */
 649                         lut_entry = ((colreg & 0x000F) << 1) |
 650                                         ((colreg & 0x00F0) << 3) |
 651                                         ((colreg & 0x0F00) << 4);
 652 #endif
 653                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 654                         cmap++;
 655 #else /* !CONFIG_ATMEL_LCD */
 656 #ifdef  CONFIG_SYS_INVERT_COLORS
 657                         *cmap++ = 0xffff - colreg;
 658 #else
 659                         *cmap++ = colreg;
 660 #endif
 661 #endif /* CONFIG_ATMEL_LCD */
 662                 }
 663
 664                 WATCHDOG_RESET();
 665
 666                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 667                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 668                         bmap += BMP_LOGO_WIDTH;
 669                         fb += panel_info.vl_col;
 670                 }
 671         }
 672         else { /* true color mode */
 673                 u16 col16;
 674                 fb16 = (ushort *)fb;
 675                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 676                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 677                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 678                                 fb16[j] =
 679                                         ((col16 & 0x000F) << 1) |
 680                                         ((col16 & 0x00F0) << 3) |
 681                                         ((col16 & 0x0F00) << 4);
 682                                 }
 683                         bmap += BMP_LOGO_WIDTH;
 684                         fb16 += panel_info.vl_col;
 685                 }
 686         }
 687
 688         WATCHDOG_RESET();
 689         lcd_sync();
 690 }
 691 #else
 692 static inline void bitmap_plot(int x, int y) {}
 693 #endif /* CONFIG_LCD_LOGO */
 694
 695 /*----------------------------------------------------------------------*/
 696 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 697 /*
 698  * Display the BMP file located at address bmp_image.
 699  * Only uncompressed.
 700  */
 701
 702 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 703 #define BMP_ALIGN_CENTER        0x7FFF
 704
 705 static void splash_align_axis(int *axis, unsigned long panel_size,
 706                                         unsigned long picture_size)
 707 {
 708         unsigned long panel_picture_delta = panel_size - picture_size;
 709         unsigned long axis_alignment;
 710
 711         if (*axis == BMP_ALIGN_CENTER)
 712                 axis_alignment = panel_picture_delta / 2;
 713         else if (*axis < 0)
 714                 axis_alignment = panel_picture_delta + *axis + 1;
 715         else
 716                 return;
 717
 718         *axis = max(0, axis_alignment);
 719 }
 720 #endif
 721
 722
 723 #ifdef CONFIG_LCD_BMP_RLE8
 724
 725 #define BMP_RLE8_ESCAPE         0
 726 #define BMP_RLE8_EOL            0
 727 #define BMP_RLE8_EOBMP          1
 728 #define BMP_RLE8_DELTA          2
 729
 730 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 731                                   int cnt)
 732 {
 733         while (cnt > 0) {
 734                 *(*fbp)++ = cmap[*bmap++];
 735                 cnt--;
 736         }
 737 }
 738
 739 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 740 {
 741         ushort *fb = *fbp;
 742         int cnt_8copy = cnt >> 3;
 743
 744         cnt -= cnt_8copy << 3;
 745         while (cnt_8copy > 0) {
 746                 *fb++ = c;
 747                 *fb++ = c;
 748                 *fb++ = c;
 749                 *fb++ = c;
 750                 *fb++ = c;
 751                 *fb++ = c;
 752                 *fb++ = c;
 753                 *fb++ = c;
 754                 cnt_8copy--;
 755         }
 756         while (cnt > 0) {
 757                 *fb++ = c;
 758                 cnt--;
 759         }
 760         *fbp = fb;
 761 }
 762
 763 /*
 764  * Do not call this function directly, must be called from lcd_display_bitmap.
 765  */
 766 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 767                                     int x_off, int y_off)
 768 {
 769         uchar *bmap;
 770         ulong width, height;
 771         ulong cnt, runlen;
 772         int x, y;
 773         int decode = 1;
 774
 775         width = le32_to_cpu(bmp->header.width);
 776         height = le32_to_cpu(bmp->header.height);
 777         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 778
 779         x = 0;
 780         y = height - 1;
 781
 782         while (decode) {
 783                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 784                         switch (bmap[1]) {
 785                         case BMP_RLE8_EOL:
 786                                 /* end of line */
 787                                 bmap += 2;
 788                                 x = 0;
 789                                 y--;
 790                                 /* 16bpix, 2-byte per pixel, width should *2 */
 791                                 fb -= (width * 2 + lcd_line_length);
 792                                 break;
 793                         case BMP_RLE8_EOBMP:
 794                                 /* end of bitmap */
 795                                 decode = 0;
 796                                 break;
 797                         case BMP_RLE8_DELTA:
 798                                 /* delta run */
 799                                 x += bmap[2];
 800                                 y -= bmap[3];
 801                                 /* 16bpix, 2-byte per pixel, x should *2 */
 802                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 803                                         * lcd_line_length + (x + x_off) * 2);
 804                                 bmap += 4;
 805                                 break;
 806                         default:
 807                                 /* unencoded run */
 808                                 runlen = bmap[1];
 809                                 bmap += 2;
 810                                 if (y < height) {
 811                                         if (x < width) {
 812                                                 if (x + runlen > width)
 813                                                         cnt = width - x;
 814                                                 else
 815                                                         cnt = runlen;
 816                                                 draw_unencoded_bitmap(
 817                                                         (ushort **)&fb,
 818                                                         bmap, cmap, cnt);
 819                                         }
 820                                         x += runlen;
 821                                 }
 822                                 bmap += runlen;
 823                                 if (runlen & 1)
 824                                         bmap++;
 825                         }
 826                 } else {
 827                         /* encoded run */
 828                         if (y < height) {
 829                                 runlen = bmap[0];
 830                                 if (x < width) {
 831                                         /* aggregate the same code */
 832                                         while (bmap[0] == 0xff &&
 833                                                bmap[2] != BMP_RLE8_ESCAPE &&
 834                                                bmap[1] == bmap[3]) {
 835                                                 runlen += bmap[2];
 836                                                 bmap += 2;
 837                                         }
 838                                         if (x + runlen > width)
 839                                                 cnt = width - x;
 840                                         else
 841                                                 cnt = runlen;
 842                                         draw_encoded_bitmap((ushort **)&fb,
 843                                                 cmap[bmap[1]], cnt);
 844                                 }
 845                                 x += runlen;
 846                         }
 847                         bmap += 2;
 848                 }
 849         }
 850 }
 851 #endif
 852
 853 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 854 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 855 #else
 856 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 857 #endif
 858
 859 #if defined(CONFIG_BMP_16BPP)
 860 #if defined(CONFIG_ATMEL_LCD_BGR555)
 861 static inline void fb_put_word(uchar **fb, uchar **from)
 862 {
 863         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 864         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 865         *from += 2;
 866 }
 867 #else
 868 static inline void fb_put_word(uchar **fb, uchar **from)
 869 {
 870         *(*fb)++ = *(*from)++;
 871         *(*fb)++ = *(*from)++;
 872 }
 873 #endif
 874 #endif /* CONFIG_BMP_16BPP */
 875
 876 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 877 {
 878 #if !defined(CONFIG_MCC200)
 879         ushort *cmap = NULL;
 880 #endif
 881         ushort *cmap_base = NULL;
 882         ushort i, j;
 883         uchar *fb;
 884         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 885         uchar *bmap;
 886         ushort padded_width;
 887         unsigned long width, height, byte_width;
 888         unsigned long pwidth = panel_info.vl_col;
 889         unsigned colors, bpix, bmp_bpix;
 890
 891         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 892                 bmp->header.signature[1] == 'M')) {
 893                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 894
 895                 return 1;
 896         }
 897
 898         width = le32_to_cpu(bmp->header.width);
 899         height = le32_to_cpu(bmp->header.height);
 900         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 901         colors = 1 << bmp_bpix;
 902
 903         bpix = NBITS(panel_info.vl_bpix);
 904
 905         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 906                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 907                         bpix, bmp_bpix);
 908
 909                 return 1;
 910         }
 911
 912         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 913         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 914                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 915                         bpix,
 916                         le16_to_cpu(bmp->header.bit_count));
 917
 918                 return 1;
 919         }
 920
 921         debug("Display-bmp: %d x %d  with %d colors\n",
 922                 (int)width, (int)height, (int)colors);
 923
 924 #if !defined(CONFIG_MCC200)
 925         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 926         if (bmp_bpix == 8) {
 927                 cmap = configuration_get_cmap();
 928                 cmap_base = cmap;
 929
 930                 /* Set color map */
 931                 for (i = 0; i < colors; ++i) {
 932                         bmp_color_table_entry_t cte = bmp->color_table[i];
 933 #if !defined(CONFIG_ATMEL_LCD)
 934                         ushort colreg =
 935                                 ( ((cte.red)   << 8) & 0xf800) |
 936                                 ( ((cte.green) << 3) & 0x07e0) |
 937                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 938 #ifdef CONFIG_SYS_INVERT_COLORS
 939                         *cmap = 0xffff - colreg;
 940 #else
 941                         *cmap = colreg;
 942 #endif
 943 #if defined(CONFIG_MPC823)
 944                         cmap--;
 945 #else
 946                         cmap++;
 947 #endif
 948 #else /* CONFIG_ATMEL_LCD */
 949                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 950 #endif
 951                 }
 952         }
 953 #endif
 954
 955         /*
 956          *  BMP format for Monochrome assumes that the state of a
 957          * pixel is described on a per Bit basis, not per Byte.
 958          *  So, in case of Monochrome BMP we should align widths
 959          * on a byte boundary and convert them from Bit to Byte
 960          * units.
 961          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 962          * their own ways, so make the converting to be MCC200
 963          * specific.
 964          */
 965 #if defined(CONFIG_MCC200)
 966         if (bpix == 1) {
 967                 width = ((width + 7) & ~7) >> 3;
 968                 x     = ((x + 7) & ~7) >> 3;
 969                 pwidth= ((pwidth + 7) & ~7) >> 3;
 970         }
 971 #endif
 972
 973         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 974
 975 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 976         splash_align_axis(&x, pwidth, width);
 977         splash_align_axis(&y, panel_info.vl_row, height);
 978 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 979
 980         if ((x + width) > pwidth)
 981                 width = pwidth - x;
 982         if ((y + height) > panel_info.vl_row)
 983                 height = panel_info.vl_row - y;
 984
 985         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
 986         fb   = (uchar *) (lcd_base +
 987                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 988
 989         switch (bmp_bpix) {
 990         case 1: /* pass through */
 991         case 8:
 992 #ifdef CONFIG_LCD_BMP_RLE8
 993                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 994                         if (bpix != 16) {
 995                                 /* TODO implement render code for bpix != 16 */
 996                                 printf("Error: only support 16 bpix");
 997                                 return 1;
 998                         }
 999                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1000                         break;
1001                 }
1002 #endif
1003
1004                 if (bpix != 16)
1005                         byte_width = width;
1006                 else
1007                         byte_width = width * 2;
1008
1009                 for (i = 0; i < height; ++i) {
1010                         WATCHDOG_RESET();
1011                         for (j = 0; j < width; j++) {
1012                                 if (bpix != 16) {
1013                                         FB_PUT_BYTE(fb, bmap);
1014                                 } else {
1015                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1016                                         fb += sizeof(uint16_t) / sizeof(*fb);
1017                                 }
1018                         }
1019                         bmap += (padded_width - width);
1020                         fb -= byte_width + lcd_line_length;
1021                 }
1022                 break;
1023
1024 #if defined(CONFIG_BMP_16BPP)
1025         case 16:
1026                 for (i = 0; i < height; ++i) {
1027                         WATCHDOG_RESET();
1028                         for (j = 0; j < width; j++)
1029                                 fb_put_word(&fb, &bmap);
1030
1031                         bmap += (padded_width - width) * 2;
1032                         fb -= width * 2 + lcd_line_length;
1033                 }
1034                 break;
1035 #endif /* CONFIG_BMP_16BPP */
1036
1037 #if defined(CONFIG_BMP_32BPP)
1038         case 32:
1039                 for (i = 0; i < height; ++i) {
1040                         for (j = 0; j < width; j++) {
1041                                 *(fb++) = *(bmap++);
1042                                 *(fb++) = *(bmap++);
1043                                 *(fb++) = *(bmap++);
1044                                 *(fb++) = *(bmap++);
1045                         }
1046                         fb -= lcd_line_length + width * (bpix / 8);
1047                 }
1048                 break;
1049 #endif /* CONFIG_BMP_32BPP */
1050         default:
1051                 break;
1052         };
1053
1054         lcd_sync();
1055         return 0;
1056 }
1057 #endif
1058
1059 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1060 static inline int splash_screen_prepare(void)
1061 {
1062         return board_splash_screen_prepare();
1063 }
1064 #else
1065 static inline int splash_screen_prepare(void)
1066 {
1067         return 0;
1068 }
1069 #endif
1070
1071 static void *lcd_logo(void)
1072 {
1073 #ifdef CONFIG_SPLASH_SCREEN
1074         char *s;
1075         ulong addr;
1076         static int do_splash = 1;
1077
1078         if (do_splash && (s = getenv("splashimage")) != NULL) {
1079                 int x = 0, y = 0;
1080                 do_splash = 0;
1081
1082                 if (splash_screen_prepare())
1083                         return (void *)gd->fb_base;
1084
1085                 addr = simple_strtoul (s, NULL, 16);
1086 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1087                 s = getenv("splashpos");
1088                 if (s != NULL) {
1089                         if (s[0] == 'm')
1090                                 x = BMP_ALIGN_CENTER;
1091                         else
1092                                 x = simple_strtol(s, NULL, 0);
1093
1094                         s = strchr(s + 1, ',');
1095                         if (s != NULL) {
1096                                 if (s[1] == 'm')
1097                                         y = BMP_ALIGN_CENTER;
1098                                 else
1099                                         y = simple_strtol (s + 1, NULL, 0);
1100                         }
1101                 }
1102 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1103
1104                 if (bmp_display(addr, x, y) == 0)
1105                         return (void *)lcd_base;
1106         }
1107 #endif /* CONFIG_SPLASH_SCREEN */
1108
1109         bitmap_plot(0, 0);
1110
1111 #ifdef CONFIG_LCD_INFO
1112         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1113         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1114         lcd_show_board_info();
1115 #endif /* CONFIG_LCD_INFO */
1116
1117 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1118         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1119 #else
1120         return (void *)lcd_base;
1121 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1122 }
1123
1124 #ifdef CONFIG_SPLASHIMAGE_GUARD
1125 static int on_splashimage(const char *name, const char *value, enum env_op op,
1126         int flags)
1127 {
1128         ulong addr;
1129         int aligned;
1130
1131         if (op == env_op_delete)
1132                 return 0;
1133
1134         addr = simple_strtoul(value, NULL, 16);
1135         /* See README.displaying-bmps */
1136         aligned = (addr % 4 == 2);
1137         if (!aligned) {
1138                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1139                 return -1;
1140         }
1141
1142         return 0;
1143 }
1144
1145 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1146 #endif
1147
1148 void lcd_position_cursor(unsigned col, unsigned row)
1149 {
1150         console_col = min(col, CONSOLE_COLS - 1);
1151         console_row = min(row, CONSOLE_ROWS - 1);
1152 }
1153
1154 int lcd_get_pixel_width(void)
1155 {
1156         return panel_info.vl_col;
1157 }
1158
1159 int lcd_get_pixel_height(void)
1160 {
1161         return panel_info.vl_row;
1162 }
1163
1164 int lcd_get_screen_rows(void)
1165 {
1166         return CONSOLE_ROWS;
1167 }
1168
1169 int lcd_get_screen_columns(void)
1170 {
1171         return CONSOLE_COLS;
1172 }