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_init(lcd_base);             /* LCD initialization */
 415
 416         /* Device initialization */
 417         memset(&lcddev, 0, sizeof(lcddev));
 418
 419         strcpy(lcddev.name, "lcd");
 420         lcddev.ext   = 0;                       /* No extensions */
 421         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 422         lcddev.putc  = lcd_putc;                /* 'putc' function */
 423         lcddev.puts  = lcd_puts;                /* 'puts' function */
 424
 425         rc = stdio_register(&lcddev);
 426
 427         return (rc == 0) ? 1 : rc;
 428 }
 429
 430 /*----------------------------------------------------------------------*/
 431 void lcd_clear(void)
 432 {
 433 #if LCD_BPP == LCD_MONOCHROME
 434         /* Setting the palette */
 435         lcd_initcolregs();
 436
 437 #elif LCD_BPP == LCD_COLOR8
 438         /* Setting the palette */
 439         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 440         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 441         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 442         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 443         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 444         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 445         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 446         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 447         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 448 #endif
 449
 450 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 451         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 452         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 453 #else
 454         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 455         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 456 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 457
 458 #ifdef  LCD_TEST_PATTERN
 459         test_pattern();
 460 #else
 461         /* set framebuffer to background color */
 462         memset((char *)lcd_base,
 463                 COLOR_MASK(lcd_getbgcolor()),
 464                 lcd_line_length * panel_info.vl_row);
 465 #endif
 466         /* Paint the logo and retrieve LCD base address */
 467         debug("[LCD] Drawing the logo...\n");
 468         lcd_console_address = lcd_logo();
 469
 470         console_col = 0;
 471         console_row = 0;
 472         lcd_sync();
 473 }
 474
 475 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 476                         char *const argv[])
 477 {
 478         lcd_clear();
 479         return 0;
 480 }
 481
 482 U_BOOT_CMD(
 483         cls,    1,      1,      do_lcd_clear,
 484         "clear screen",
 485         ""
 486 );
 487
 488 /*----------------------------------------------------------------------*/
 489
 490 static int lcd_init(void *lcdbase)
 491 {
 492         /* Initialize the lcd controller */
 493         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 494
 495         lcd_ctrl_init(lcdbase);
 496
 497         /*
 498          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 499          * the 'lcdbase' argument and uses custom lcd base address
 500          * by setting up gd->fb_base. Check for this condition and fixup
 501          * 'lcd_base' address.
 502          */
 503         if ((unsigned long)lcdbase != gd->fb_base)
 504                 lcd_base = (void *)gd->fb_base;
 505
 506         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 507
 508         lcd_get_size(&lcd_line_length);
 509         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 510         lcd_is_enabled = 1;
 511         lcd_clear();
 512         lcd_enable();
 513
 514         /* Initialize the console */
 515         console_col = 0;
 516 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 517         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 518 #else
 519         console_row = 1;        /* leave 1 blank line below logo */
 520 #endif
 521
 522         return 0;
 523 }
 524
 525
 526 /************************************************************************/
 527 /* ** ROM capable initialization part - needed to reserve FB memory     */
 528 /************************************************************************/
 529 /*
 530  * This is called early in the system initialization to grab memory
 531  * for the LCD controller.
 532  * Returns new address for monitor, after reserving LCD buffer memory
 533  *
 534  * Note that this is running from ROM, so no write access to global data.
 535  */
 536 ulong lcd_setmem(ulong addr)
 537 {
 538         ulong size;
 539         int line_length;
 540
 541         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 542                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 543
 544         size = lcd_get_size(&line_length);
 545
 546         /* Round up to nearest full page, or MMU section if defined */
 547         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 548         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 549
 550         /* Allocate pages for the frame buffer. */
 551         addr -= size;
 552
 553         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 554               size >> 10, addr);
 555
 556         return addr;
 557 }
 558
 559 /*----------------------------------------------------------------------*/
 560
 561 static void lcd_setfgcolor(int color)
 562 {
 563         lcd_color_fg = color;
 564 }
 565
 566 /*----------------------------------------------------------------------*/
 567
 568 static void lcd_setbgcolor(int color)
 569 {
 570         lcd_color_bg = color;
 571 }
 572
 573 /*----------------------------------------------------------------------*/
 574
 575 int lcd_getfgcolor(void)
 576 {
 577         return lcd_color_fg;
 578 }
 579
 580 /*----------------------------------------------------------------------*/
 581
 582 static int lcd_getbgcolor(void)
 583 {
 584         return lcd_color_bg;
 585 }
 586
 587 /************************************************************************/
 588 /* ** Chipset depending Bitmap / Logo stuff...                          */
 589 /************************************************************************/
 590 static inline ushort *configuration_get_cmap(void)
 591 {
 592 #if defined CONFIG_CPU_PXA
 593         struct pxafb_info *fbi = &panel_info.pxa;
 594         return (ushort *)fbi->palette;
 595 #elif defined(CONFIG_MPC823)
 596         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 597         cpm8xx_t *cp = &(immr->im_cpm);
 598         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 599 #elif defined(CONFIG_ATMEL_LCD)
 600         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 601 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 602         return panel_info.cmap;
 603 #elif defined(CONFIG_LCD_LOGO)
 604         return bmp_logo_palette;
 605 #else
 606         return NULL;
 607 #endif
 608 }
 609
 610 #ifdef CONFIG_LCD_LOGO
 611 void bitmap_plot(int x, int y)
 612 {
 613 #ifdef CONFIG_ATMEL_LCD
 614         uint *cmap = (uint *)bmp_logo_palette;
 615 #else
 616         ushort *cmap = (ushort *)bmp_logo_palette;
 617 #endif
 618         ushort i, j;
 619         uchar *bmap;
 620         uchar *fb;
 621         ushort *fb16;
 622 #if defined(CONFIG_MPC823)
 623         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 624         cpm8xx_t *cp = &(immr->im_cpm);
 625 #endif
 626         unsigned bpix = NBITS(panel_info.vl_bpix);
 627
 628         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 629                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 630                 ARRAY_SIZE(bmp_logo_palette));
 631
 632         bmap = &bmp_logo_bitmap[0];
 633         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 634
 635         if (bpix < 12) {
 636                 /* Leave room for default color map
 637                  * default case: generic system with no cmap (most likely 16bpp)
 638                  * cmap was set to the source palette, so no change is done.
 639                  * This avoids even more ifdefs in the next stanza
 640                  */
 641 #if defined(CONFIG_MPC823)
 642                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 643 #elif defined(CONFIG_ATMEL_LCD)
 644                 cmap = (uint *)configuration_get_cmap();
 645 #else
 646                 cmap = configuration_get_cmap();
 647 #endif
 648
 649                 WATCHDOG_RESET();
 650
 651                 /* Set color map */
 652                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 653                         ushort colreg = bmp_logo_palette[i];
 654 #ifdef CONFIG_ATMEL_LCD
 655                         uint lut_entry;
 656 #ifdef CONFIG_ATMEL_LCD_BGR555
 657                         lut_entry = ((colreg & 0x000F) << 11) |
 658                                         ((colreg & 0x00F0) <<  2) |
 659                                         ((colreg & 0x0F00) >>  7);
 660 #else /* CONFIG_ATMEL_LCD_RGB565 */
 661                         lut_entry = ((colreg & 0x000F) << 1) |
 662                                         ((colreg & 0x00F0) << 3) |
 663                                         ((colreg & 0x0F00) << 4);
 664 #endif
 665                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 666                         cmap++;
 667 #else /* !CONFIG_ATMEL_LCD */
 668 #ifdef  CONFIG_SYS_INVERT_COLORS
 669                         *cmap++ = 0xffff - colreg;
 670 #else
 671                         *cmap++ = colreg;
 672 #endif
 673 #endif /* CONFIG_ATMEL_LCD */
 674                 }
 675
 676                 WATCHDOG_RESET();
 677
 678                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 679                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 680                         bmap += BMP_LOGO_WIDTH;
 681                         fb += panel_info.vl_col;
 682                 }
 683         }
 684         else { /* true color mode */
 685                 u16 col16;
 686                 fb16 = (ushort *)fb;
 687                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 688                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 689                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 690                                 fb16[j] =
 691                                         ((col16 & 0x000F) << 1) |
 692                                         ((col16 & 0x00F0) << 3) |
 693                                         ((col16 & 0x0F00) << 4);
 694                                 }
 695                         bmap += BMP_LOGO_WIDTH;
 696                         fb16 += panel_info.vl_col;
 697                 }
 698         }
 699
 700         WATCHDOG_RESET();
 701         lcd_sync();
 702 }
 703 #else
 704 static inline void bitmap_plot(int x, int y) {}
 705 #endif /* CONFIG_LCD_LOGO */
 706
 707 /*----------------------------------------------------------------------*/
 708 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 709 /*
 710  * Display the BMP file located at address bmp_image.
 711  * Only uncompressed.
 712  */
 713
 714 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 715 #define BMP_ALIGN_CENTER        0x7FFF
 716
 717 static void splash_align_axis(int *axis, unsigned long panel_size,
 718                                         unsigned long picture_size)
 719 {
 720         unsigned long panel_picture_delta = panel_size - picture_size;
 721         unsigned long axis_alignment;
 722
 723         if (*axis == BMP_ALIGN_CENTER)
 724                 axis_alignment = panel_picture_delta / 2;
 725         else if (*axis < 0)
 726                 axis_alignment = panel_picture_delta + *axis + 1;
 727         else
 728                 return;
 729
 730         *axis = max(0, axis_alignment);
 731 }
 732 #endif
 733
 734
 735 #ifdef CONFIG_LCD_BMP_RLE8
 736
 737 #define BMP_RLE8_ESCAPE         0
 738 #define BMP_RLE8_EOL            0
 739 #define BMP_RLE8_EOBMP          1
 740 #define BMP_RLE8_DELTA          2
 741
 742 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 743                                   int cnt)
 744 {
 745         while (cnt > 0) {
 746                 *(*fbp)++ = cmap[*bmap++];
 747                 cnt--;
 748         }
 749 }
 750
 751 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 752 {
 753         ushort *fb = *fbp;
 754         int cnt_8copy = cnt >> 3;
 755
 756         cnt -= cnt_8copy << 3;
 757         while (cnt_8copy > 0) {
 758                 *fb++ = c;
 759                 *fb++ = c;
 760                 *fb++ = c;
 761                 *fb++ = c;
 762                 *fb++ = c;
 763                 *fb++ = c;
 764                 *fb++ = c;
 765                 *fb++ = c;
 766                 cnt_8copy--;
 767         }
 768         while (cnt > 0) {
 769                 *fb++ = c;
 770                 cnt--;
 771         }
 772         *fbp = fb;
 773 }
 774
 775 /*
 776  * Do not call this function directly, must be called from lcd_display_bitmap.
 777  */
 778 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 779                                     int x_off, int y_off)
 780 {
 781         uchar *bmap;
 782         ulong width, height;
 783         ulong cnt, runlen;
 784         int x, y;
 785         int decode = 1;
 786
 787         width = le32_to_cpu(bmp->header.width);
 788         height = le32_to_cpu(bmp->header.height);
 789         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 790
 791         x = 0;
 792         y = height - 1;
 793
 794         while (decode) {
 795                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 796                         switch (bmap[1]) {
 797                         case BMP_RLE8_EOL:
 798                                 /* end of line */
 799                                 bmap += 2;
 800                                 x = 0;
 801                                 y--;
 802                                 /* 16bpix, 2-byte per pixel, width should *2 */
 803                                 fb -= (width * 2 + lcd_line_length);
 804                                 break;
 805                         case BMP_RLE8_EOBMP:
 806                                 /* end of bitmap */
 807                                 decode = 0;
 808                                 break;
 809                         case BMP_RLE8_DELTA:
 810                                 /* delta run */
 811                                 x += bmap[2];
 812                                 y -= bmap[3];
 813                                 /* 16bpix, 2-byte per pixel, x should *2 */
 814                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 815                                         * lcd_line_length + (x + x_off) * 2);
 816                                 bmap += 4;
 817                                 break;
 818                         default:
 819                                 /* unencoded run */
 820                                 runlen = bmap[1];
 821                                 bmap += 2;
 822                                 if (y < height) {
 823                                         if (x < width) {
 824                                                 if (x + runlen > width)
 825                                                         cnt = width - x;
 826                                                 else
 827                                                         cnt = runlen;
 828                                                 draw_unencoded_bitmap(
 829                                                         (ushort **)&fb,
 830                                                         bmap, cmap, cnt);
 831                                         }
 832                                         x += runlen;
 833                                 }
 834                                 bmap += runlen;
 835                                 if (runlen & 1)
 836                                         bmap++;
 837                         }
 838                 } else {
 839                         /* encoded run */
 840                         if (y < height) {
 841                                 runlen = bmap[0];
 842                                 if (x < width) {
 843                                         /* aggregate the same code */
 844                                         while (bmap[0] == 0xff &&
 845                                                bmap[2] != BMP_RLE8_ESCAPE &&
 846                                                bmap[1] == bmap[3]) {
 847                                                 runlen += bmap[2];
 848                                                 bmap += 2;
 849                                         }
 850                                         if (x + runlen > width)
 851                                                 cnt = width - x;
 852                                         else
 853                                                 cnt = runlen;
 854                                         draw_encoded_bitmap((ushort **)&fb,
 855                                                 cmap[bmap[1]], cnt);
 856                                 }
 857                                 x += runlen;
 858                         }
 859                         bmap += 2;
 860                 }
 861         }
 862 }
 863 #endif
 864
 865 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 866 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 867 #else
 868 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 869 #endif
 870
 871 #if defined(CONFIG_BMP_16BPP)
 872 #if defined(CONFIG_ATMEL_LCD_BGR555)
 873 static inline void fb_put_word(uchar **fb, uchar **from)
 874 {
 875         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 876         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 877         *from += 2;
 878 }
 879 #else
 880 static inline void fb_put_word(uchar **fb, uchar **from)
 881 {
 882         *(*fb)++ = *(*from)++;
 883         *(*fb)++ = *(*from)++;
 884 }
 885 #endif
 886 #endif /* CONFIG_BMP_16BPP */
 887
 888 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 889 {
 890 #if !defined(CONFIG_MCC200)
 891         ushort *cmap = NULL;
 892 #endif
 893         ushort *cmap_base = NULL;
 894         ushort i, j;
 895         uchar *fb;
 896         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 897         uchar *bmap;
 898         ushort padded_width;
 899         unsigned long width, height, byte_width;
 900         unsigned long pwidth = panel_info.vl_col;
 901         unsigned colors, bpix, bmp_bpix;
 902
 903         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 904                 bmp->header.signature[1] == 'M')) {
 905                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 906
 907                 return 1;
 908         }
 909
 910         width = le32_to_cpu(bmp->header.width);
 911         height = le32_to_cpu(bmp->header.height);
 912         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 913         colors = 1 << bmp_bpix;
 914
 915         bpix = NBITS(panel_info.vl_bpix);
 916
 917         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 918                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 919                         bpix, bmp_bpix);
 920
 921                 return 1;
 922         }
 923
 924         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 925         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 926                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 927                         bpix,
 928                         le16_to_cpu(bmp->header.bit_count));
 929
 930                 return 1;
 931         }
 932
 933         debug("Display-bmp: %d x %d  with %d colors\n",
 934                 (int)width, (int)height, (int)colors);
 935
 936 #if !defined(CONFIG_MCC200)
 937         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 938         if (bmp_bpix == 8) {
 939                 cmap = configuration_get_cmap();
 940                 cmap_base = cmap;
 941
 942                 /* Set color map */
 943                 for (i = 0; i < colors; ++i) {
 944                         bmp_color_table_entry_t cte = bmp->color_table[i];
 945 #if !defined(CONFIG_ATMEL_LCD)
 946                         ushort colreg =
 947                                 ( ((cte.red)   << 8) & 0xf800) |
 948                                 ( ((cte.green) << 3) & 0x07e0) |
 949                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 950 #ifdef CONFIG_SYS_INVERT_COLORS
 951                         *cmap = 0xffff - colreg;
 952 #else
 953                         *cmap = colreg;
 954 #endif
 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 #endif
 966
 967         /*
 968          *  BMP format for Monochrome assumes that the state of a
 969          * pixel is described on a per Bit basis, not per Byte.
 970          *  So, in case of Monochrome BMP we should align widths
 971          * on a byte boundary and convert them from Bit to Byte
 972          * units.
 973          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 974          * their own ways, so make the converting to be MCC200
 975          * specific.
 976          */
 977 #if defined(CONFIG_MCC200)
 978         if (bpix == 1) {
 979                 width = ((width + 7) & ~7) >> 3;
 980                 x     = ((x + 7) & ~7) >> 3;
 981                 pwidth= ((pwidth + 7) & ~7) >> 3;
 982         }
 983 #endif
 984
 985         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 986
 987 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 988         splash_align_axis(&x, pwidth, width);
 989         splash_align_axis(&y, panel_info.vl_row, height);
 990 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 991
 992         if ((x + width) > pwidth)
 993                 width = pwidth - x;
 994         if ((y + height) > panel_info.vl_row)
 995                 height = panel_info.vl_row - y;
 996
 997         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
 998         fb   = (uchar *) (lcd_base +
 999                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1000
1001         switch (bmp_bpix) {
1002         case 1: /* pass through */
1003         case 8:
1004 #ifdef CONFIG_LCD_BMP_RLE8
1005                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
1006                         if (bpix != 16) {
1007                                 /* TODO implement render code for bpix != 16 */
1008                                 printf("Error: only support 16 bpix");
1009                                 return 1;
1010                         }
1011                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1012                         break;
1013                 }
1014 #endif
1015
1016                 if (bpix != 16)
1017                         byte_width = width;
1018                 else
1019                         byte_width = width * 2;
1020
1021                 for (i = 0; i < height; ++i) {
1022                         WATCHDOG_RESET();
1023                         for (j = 0; j < width; j++) {
1024                                 if (bpix != 16) {
1025                                         FB_PUT_BYTE(fb, bmap);
1026                                 } else {
1027                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1028                                         fb += sizeof(uint16_t) / sizeof(*fb);
1029                                 }
1030                         }
1031                         bmap += (padded_width - width);
1032                         fb -= byte_width + lcd_line_length;
1033                 }
1034                 break;
1035
1036 #if defined(CONFIG_BMP_16BPP)
1037         case 16:
1038                 for (i = 0; i < height; ++i) {
1039                         WATCHDOG_RESET();
1040                         for (j = 0; j < width; j++)
1041                                 fb_put_word(&fb, &bmap);
1042
1043                         bmap += (padded_width - width) * 2;
1044                         fb -= width * 2 + lcd_line_length;
1045                 }
1046                 break;
1047 #endif /* CONFIG_BMP_16BPP */
1048
1049 #if defined(CONFIG_BMP_32BPP)
1050         case 32:
1051                 for (i = 0; i < height; ++i) {
1052                         for (j = 0; j < width; j++) {
1053                                 *(fb++) = *(bmap++);
1054                                 *(fb++) = *(bmap++);
1055                                 *(fb++) = *(bmap++);
1056                                 *(fb++) = *(bmap++);
1057                         }
1058                         fb -= lcd_line_length + width * (bpix / 8);
1059                 }
1060                 break;
1061 #endif /* CONFIG_BMP_32BPP */
1062         default:
1063                 break;
1064         };
1065
1066         lcd_sync();
1067         return 0;
1068 }
1069 #endif
1070
1071 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1072 static inline int splash_screen_prepare(void)
1073 {
1074         return board_splash_screen_prepare();
1075 }
1076 #else
1077 static inline int splash_screen_prepare(void)
1078 {
1079         return 0;
1080 }
1081 #endif
1082
1083 static void *lcd_logo(void)
1084 {
1085 #ifdef CONFIG_SPLASH_SCREEN
1086         char *s;
1087         ulong addr;
1088         static int do_splash = 1;
1089
1090         if (do_splash && (s = getenv("splashimage")) != NULL) {
1091                 int x = 0, y = 0;
1092                 do_splash = 0;
1093
1094                 if (splash_screen_prepare())
1095                         return (void *)gd->fb_base;
1096
1097                 addr = simple_strtoul (s, NULL, 16);
1098 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1099                 s = getenv("splashpos");
1100                 if (s != NULL) {
1101                         if (s[0] == 'm')
1102                                 x = BMP_ALIGN_CENTER;
1103                         else
1104                                 x = simple_strtol(s, NULL, 0);
1105
1106                         s = strchr(s + 1, ',');
1107                         if (s != NULL) {
1108                                 if (s[1] == 'm')
1109                                         y = BMP_ALIGN_CENTER;
1110                                 else
1111                                         y = simple_strtol (s + 1, NULL, 0);
1112                         }
1113                 }
1114 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1115
1116                 if (bmp_display(addr, x, y) == 0)
1117                         return (void *)lcd_base;
1118         }
1119 #endif /* CONFIG_SPLASH_SCREEN */
1120
1121         bitmap_plot(0, 0);
1122
1123 #ifdef CONFIG_LCD_INFO
1124         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1125         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1126         lcd_show_board_info();
1127 #endif /* CONFIG_LCD_INFO */
1128
1129 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1130         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1131 #else
1132         return (void *)lcd_base;
1133 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1134 }
1135
1136 #ifdef CONFIG_SPLASHIMAGE_GUARD
1137 static int on_splashimage(const char *name, const char *value, enum env_op op,
1138         int flags)
1139 {
1140         ulong addr;
1141         int aligned;
1142
1143         if (op == env_op_delete)
1144                 return 0;
1145
1146         addr = simple_strtoul(value, NULL, 16);
1147         /* See README.displaying-bmps */
1148         aligned = (addr % 4 == 2);
1149         if (!aligned) {
1150                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1151                 return -1;
1152         }
1153
1154         return 0;
1155 }
1156
1157 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1158 #endif
1159
1160 void lcd_position_cursor(unsigned col, unsigned row)
1161 {
1162         console_col = min(col, CONSOLE_COLS - 1);
1163         console_row = min(row, CONSOLE_ROWS - 1);
1164 }
1165
1166 int lcd_get_pixel_width(void)
1167 {
1168         return panel_info.vl_col;
1169 }
1170
1171 int lcd_get_pixel_height(void)
1172 {
1173         return panel_info.vl_row;
1174 }
1175
1176 int lcd_get_screen_rows(void)
1177 {
1178         return CONSOLE_ROWS;
1179 }
1180
1181 int lcd_get_screen_columns(void)
1182 {
1183         return CONSOLE_COLS;
1184 }