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
 615         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 616                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 617                 ARRAY_SIZE(bmp_logo_palette));
 618
 619         bmap = &bmp_logo_bitmap[0];
 620         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
 621
 622         if (NBITS(panel_info.vl_bpix) < 12) {
 623                 /* Leave room for default color map
 624                  * default case: generic system with no cmap (most likely 16bpp)
 625                  * cmap was set to the source palette, so no change is done.
 626                  * This avoids even more ifdefs in the next stanza
 627                  */
 628 #if defined(CONFIG_MPC823)
 629                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 630 #elif defined(CONFIG_ATMEL_LCD)
 631                 cmap = (uint *)configuration_get_cmap();
 632 #else
 633                 cmap = configuration_get_cmap();
 634 #endif
 635
 636                 WATCHDOG_RESET();
 637
 638                 /* Set color map */
 639                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 640                         ushort colreg = bmp_logo_palette[i];
 641 #ifdef CONFIG_ATMEL_LCD
 642                         uint lut_entry;
 643 #ifdef CONFIG_ATMEL_LCD_BGR555
 644                         lut_entry = ((colreg & 0x000F) << 11) |
 645                                         ((colreg & 0x00F0) <<  2) |
 646                                         ((colreg & 0x0F00) >>  7);
 647 #else /* CONFIG_ATMEL_LCD_RGB565 */
 648                         lut_entry = ((colreg & 0x000F) << 1) |
 649                                         ((colreg & 0x00F0) << 3) |
 650                                         ((colreg & 0x0F00) << 4);
 651 #endif
 652                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 653                         cmap++;
 654 #else /* !CONFIG_ATMEL_LCD */
 655 #ifdef  CONFIG_SYS_INVERT_COLORS
 656                         *cmap++ = 0xffff - colreg;
 657 #else
 658                         *cmap++ = colreg;
 659 #endif
 660 #endif /* CONFIG_ATMEL_LCD */
 661                 }
 662
 663                 WATCHDOG_RESET();
 664
 665                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 666                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 667                         bmap += BMP_LOGO_WIDTH;
 668                         fb += panel_info.vl_col;
 669                 }
 670         }
 671         else { /* true color mode */
 672                 u16 col16;
 673                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
 674                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 675                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 676                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 677                                 fb16[j] =
 678                                         ((col16 & 0x000F) << 1) |
 679                                         ((col16 & 0x00F0) << 3) |
 680                                         ((col16 & 0x0F00) << 4);
 681                                 }
 682                         bmap += BMP_LOGO_WIDTH;
 683                         fb16 += panel_info.vl_col;
 684                 }
 685         }
 686
 687         WATCHDOG_RESET();
 688         lcd_sync();
 689 }
 690 #else
 691 static inline void bitmap_plot(int x, int y) {}
 692 #endif /* CONFIG_LCD_LOGO */
 693
 694 /*----------------------------------------------------------------------*/
 695 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 696 /*
 697  * Display the BMP file located at address bmp_image.
 698  * Only uncompressed.
 699  */
 700
 701 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 702 #define BMP_ALIGN_CENTER        0x7FFF
 703
 704 static void splash_align_axis(int *axis, unsigned long panel_size,
 705                                         unsigned long picture_size)
 706 {
 707         unsigned long panel_picture_delta = panel_size - picture_size;
 708         unsigned long axis_alignment;
 709
 710         if (*axis == BMP_ALIGN_CENTER)
 711                 axis_alignment = panel_picture_delta / 2;
 712         else if (*axis < 0)
 713                 axis_alignment = panel_picture_delta + *axis + 1;
 714         else
 715                 return;
 716
 717         *axis = max(0, axis_alignment);
 718 }
 719 #endif
 720
 721
 722 #ifdef CONFIG_LCD_BMP_RLE8
 723
 724 #define BMP_RLE8_ESCAPE         0
 725 #define BMP_RLE8_EOL            0
 726 #define BMP_RLE8_EOBMP          1
 727 #define BMP_RLE8_DELTA          2
 728
 729 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 730                                   int cnt)
 731 {
 732         while (cnt > 0) {
 733                 *(*fbp)++ = cmap[*bmap++];
 734                 cnt--;
 735         }
 736 }
 737
 738 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 739 {
 740         ushort *fb = *fbp;
 741         int cnt_8copy = cnt >> 3;
 742
 743         cnt -= cnt_8copy << 3;
 744         while (cnt_8copy > 0) {
 745                 *fb++ = c;
 746                 *fb++ = c;
 747                 *fb++ = c;
 748                 *fb++ = c;
 749                 *fb++ = c;
 750                 *fb++ = c;
 751                 *fb++ = c;
 752                 *fb++ = c;
 753                 cnt_8copy--;
 754         }
 755         while (cnt > 0) {
 756                 *fb++ = c;
 757                 cnt--;
 758         }
 759         *fbp = fb;
 760 }
 761
 762 /*
 763  * Do not call this function directly, must be called from lcd_display_bitmap.
 764  */
 765 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 766                                     int x_off, int y_off)
 767 {
 768         uchar *bmap;
 769         ulong width, height;
 770         ulong cnt, runlen;
 771         int x, y;
 772         int decode = 1;
 773
 774         width = le32_to_cpu(bmp->header.width);
 775         height = le32_to_cpu(bmp->header.height);
 776         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 777
 778         x = 0;
 779         y = height - 1;
 780
 781         while (decode) {
 782                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 783                         switch (bmap[1]) {
 784                         case BMP_RLE8_EOL:
 785                                 /* end of line */
 786                                 bmap += 2;
 787                                 x = 0;
 788                                 y--;
 789                                 /* 16bpix, 2-byte per pixel, width should *2 */
 790                                 fb -= (width * 2 + lcd_line_length);
 791                                 break;
 792                         case BMP_RLE8_EOBMP:
 793                                 /* end of bitmap */
 794                                 decode = 0;
 795                                 break;
 796                         case BMP_RLE8_DELTA:
 797                                 /* delta run */
 798                                 x += bmap[2];
 799                                 y -= bmap[3];
 800                                 /* 16bpix, 2-byte per pixel, x should *2 */
 801                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 802                                         * lcd_line_length + (x + x_off) * 2);
 803                                 bmap += 4;
 804                                 break;
 805                         default:
 806                                 /* unencoded run */
 807                                 runlen = bmap[1];
 808                                 bmap += 2;
 809                                 if (y < height) {
 810                                         if (x < width) {
 811                                                 if (x + runlen > width)
 812                                                         cnt = width - x;
 813                                                 else
 814                                                         cnt = runlen;
 815                                                 draw_unencoded_bitmap(
 816                                                         (ushort **)&fb,
 817                                                         bmap, cmap, cnt);
 818                                         }
 819                                         x += runlen;
 820                                 }
 821                                 bmap += runlen;
 822                                 if (runlen & 1)
 823                                         bmap++;
 824                         }
 825                 } else {
 826                         /* encoded run */
 827                         if (y < height) {
 828                                 runlen = bmap[0];
 829                                 if (x < width) {
 830                                         /* aggregate the same code */
 831                                         while (bmap[0] == 0xff &&
 832                                                bmap[2] != BMP_RLE8_ESCAPE &&
 833                                                bmap[1] == bmap[3]) {
 834                                                 runlen += bmap[2];
 835                                                 bmap += 2;
 836                                         }
 837                                         if (x + runlen > width)
 838                                                 cnt = width - x;
 839                                         else
 840                                                 cnt = runlen;
 841                                         draw_encoded_bitmap((ushort **)&fb,
 842                                                 cmap[bmap[1]], cnt);
 843                                 }
 844                                 x += runlen;
 845                         }
 846                         bmap += 2;
 847                 }
 848         }
 849 }
 850 #endif
 851
 852 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 853 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 854 #else
 855 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 856 #endif
 857
 858 #if defined(CONFIG_BMP_16BPP)
 859 #if defined(CONFIG_ATMEL_LCD_BGR555)
 860 static inline void fb_put_word(uchar **fb, uchar **from)
 861 {
 862         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 863         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 864         *from += 2;
 865 }
 866 #else
 867 static inline void fb_put_word(uchar **fb, uchar **from)
 868 {
 869         *(*fb)++ = *(*from)++;
 870         *(*fb)++ = *(*from)++;
 871 }
 872 #endif
 873 #endif /* CONFIG_BMP_16BPP */
 874
 875 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 876 {
 877 #if !defined(CONFIG_MCC200)
 878         ushort *cmap = NULL;
 879 #endif
 880         ushort *cmap_base = NULL;
 881         ushort i, j;
 882         uchar *fb;
 883         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 884         uchar *bmap;
 885         ushort padded_width;
 886         unsigned long width, height, byte_width;
 887         unsigned long pwidth = panel_info.vl_col;
 888         unsigned colors, bpix, bmp_bpix;
 889
 890         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 891                 bmp->header.signature[1] == 'M')) {
 892                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 893
 894                 return 1;
 895         }
 896
 897         width = le32_to_cpu(bmp->header.width);
 898         height = le32_to_cpu(bmp->header.height);
 899         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 900         colors = 1 << bmp_bpix;
 901
 902         bpix = NBITS(panel_info.vl_bpix);
 903
 904         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 905                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 906                         bpix, bmp_bpix);
 907
 908                 return 1;
 909         }
 910
 911         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 912         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 913                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 914                         bpix,
 915                         le16_to_cpu(bmp->header.bit_count));
 916
 917                 return 1;
 918         }
 919
 920         debug("Display-bmp: %d x %d  with %d colors\n",
 921                 (int)width, (int)height, (int)colors);
 922
 923 #if !defined(CONFIG_MCC200)
 924         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 925         if (bmp_bpix == 8) {
 926                 cmap = configuration_get_cmap();
 927                 cmap_base = cmap;
 928
 929                 /* Set color map */
 930                 for (i = 0; i < colors; ++i) {
 931                         bmp_color_table_entry_t cte = bmp->color_table[i];
 932 #if !defined(CONFIG_ATMEL_LCD)
 933                         ushort colreg =
 934                                 ( ((cte.red)   << 8) & 0xf800) |
 935                                 ( ((cte.green) << 3) & 0x07e0) |
 936                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 937 #ifdef CONFIG_SYS_INVERT_COLORS
 938                         *cmap = 0xffff - colreg;
 939 #else
 940                         *cmap = colreg;
 941 #endif
 942 #if defined(CONFIG_MPC823)
 943                         cmap--;
 944 #else
 945                         cmap++;
 946 #endif
 947 #else /* CONFIG_ATMEL_LCD */
 948                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 949 #endif
 950                 }
 951         }
 952 #endif
 953
 954         /*
 955          *  BMP format for Monochrome assumes that the state of a
 956          * pixel is described on a per Bit basis, not per Byte.
 957          *  So, in case of Monochrome BMP we should align widths
 958          * on a byte boundary and convert them from Bit to Byte
 959          * units.
 960          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 961          * their own ways, so make the converting to be MCC200
 962          * specific.
 963          */
 964 #if defined(CONFIG_MCC200)
 965         if (bpix == 1) {
 966                 width = ((width + 7) & ~7) >> 3;
 967                 x     = ((x + 7) & ~7) >> 3;
 968                 pwidth= ((pwidth + 7) & ~7) >> 3;
 969         }
 970 #endif
 971
 972         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 973
 974 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 975         splash_align_axis(&x, pwidth, width);
 976         splash_align_axis(&y, panel_info.vl_row, height);
 977 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 978
 979         if ((x + width) > pwidth)
 980                 width = pwidth - x;
 981         if ((y + height) > panel_info.vl_row)
 982                 height = panel_info.vl_row - y;
 983
 984         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
 985         fb   = (uchar *) (lcd_base +
 986                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 987
 988         switch (bmp_bpix) {
 989         case 1: /* pass through */
 990         case 8:
 991 #ifdef CONFIG_LCD_BMP_RLE8
 992                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
 993                         if (bpix != 16) {
 994                                 /* TODO implement render code for bpix != 16 */
 995                                 printf("Error: only support 16 bpix");
 996                                 return 1;
 997                         }
 998                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 999                         break;
1000                 }
1001 #endif
1002
1003                 if (bpix != 16)
1004                         byte_width = width;
1005                 else
1006                         byte_width = width * 2;
1007
1008                 for (i = 0; i < height; ++i) {
1009                         WATCHDOG_RESET();
1010                         for (j = 0; j < width; j++) {
1011                                 if (bpix != 16) {
1012                                         FB_PUT_BYTE(fb, bmap);
1013                                 } else {
1014                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1015                                         fb += sizeof(uint16_t) / sizeof(*fb);
1016                                 }
1017                         }
1018                         bmap += (padded_width - width);
1019                         fb -= byte_width + lcd_line_length;
1020                 }
1021                 break;
1022
1023 #if defined(CONFIG_BMP_16BPP)
1024         case 16:
1025                 for (i = 0; i < height; ++i) {
1026                         WATCHDOG_RESET();
1027                         for (j = 0; j < width; j++)
1028                                 fb_put_word(&fb, &bmap);
1029
1030                         bmap += (padded_width - width) * 2;
1031                         fb -= width * 2 + lcd_line_length;
1032                 }
1033                 break;
1034 #endif /* CONFIG_BMP_16BPP */
1035
1036 #if defined(CONFIG_BMP_32BPP)
1037         case 32:
1038                 for (i = 0; i < height; ++i) {
1039                         for (j = 0; j < width; j++) {
1040                                 *(fb++) = *(bmap++);
1041                                 *(fb++) = *(bmap++);
1042                                 *(fb++) = *(bmap++);
1043                                 *(fb++) = *(bmap++);
1044                         }
1045                         fb -= lcd_line_length + width * (bpix / 8);
1046                 }
1047                 break;
1048 #endif /* CONFIG_BMP_32BPP */
1049         default:
1050                 break;
1051         };
1052
1053         lcd_sync();
1054         return 0;
1055 }
1056 #endif
1057
1058 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1059 static inline int splash_screen_prepare(void)
1060 {
1061         return board_splash_screen_prepare();
1062 }
1063 #else
1064 static inline int splash_screen_prepare(void)
1065 {
1066         return 0;
1067 }
1068 #endif
1069
1070 static void *lcd_logo(void)
1071 {
1072 #ifdef CONFIG_SPLASH_SCREEN
1073         char *s;
1074         ulong addr;
1075         static int do_splash = 1;
1076
1077         if (do_splash && (s = getenv("splashimage")) != NULL) {
1078                 int x = 0, y = 0;
1079                 do_splash = 0;
1080
1081                 if (splash_screen_prepare())
1082                         return (void *)gd->fb_base;
1083
1084                 addr = simple_strtoul (s, NULL, 16);
1085 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1086                 s = getenv("splashpos");
1087                 if (s != NULL) {
1088                         if (s[0] == 'm')
1089                                 x = BMP_ALIGN_CENTER;
1090                         else
1091                                 x = simple_strtol(s, NULL, 0);
1092
1093                         s = strchr(s + 1, ',');
1094                         if (s != NULL) {
1095                                 if (s[1] == 'm')
1096                                         y = BMP_ALIGN_CENTER;
1097                                 else
1098                                         y = simple_strtol (s + 1, NULL, 0);
1099                         }
1100                 }
1101 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1102
1103                 if (bmp_display(addr, x, y) == 0)
1104                         return (void *)lcd_base;
1105         }
1106 #endif /* CONFIG_SPLASH_SCREEN */
1107
1108         bitmap_plot(0, 0);
1109
1110 #ifdef CONFIG_LCD_INFO
1111         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1112         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1113         lcd_show_board_info();
1114 #endif /* CONFIG_LCD_INFO */
1115
1116 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1117         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1118 #else
1119         return (void *)lcd_base;
1120 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1121 }
1122
1123 #ifdef CONFIG_SPLASHIMAGE_GUARD
1124 static int on_splashimage(const char *name, const char *value, enum env_op op,
1125         int flags)
1126 {
1127         ulong addr;
1128         int aligned;
1129
1130         if (op == env_op_delete)
1131                 return 0;
1132
1133         addr = simple_strtoul(value, NULL, 16);
1134         /* See README.displaying-bmps */
1135         aligned = (addr % 4 == 2);
1136         if (!aligned) {
1137                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1138                 return -1;
1139         }
1140
1141         return 0;
1142 }
1143
1144 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1145 #endif
1146
1147 void lcd_position_cursor(unsigned col, unsigned row)
1148 {
1149         console_col = min(col, CONSOLE_COLS - 1);
1150         console_row = min(row, CONSOLE_ROWS - 1);
1151 }
1152
1153 int lcd_get_pixel_width(void)
1154 {
1155         return panel_info.vl_col;
1156 }
1157
1158 int lcd_get_pixel_height(void)
1159 {
1160         return panel_info.vl_row;
1161 }
1162
1163 int lcd_get_screen_rows(void)
1164 {
1165         return CONSOLE_ROWS;
1166 }
1167
1168 int lcd_get_screen_columns(void)
1169 {
1170         return CONSOLE_COLS;
1171 }