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 #include <splash.h>
  47
  48 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  49         defined(CONFIG_CPU_MONAHANS)
  50 #define CONFIG_CPU_PXA
  51 #include <asm/byteorder.h>
  52 #endif
  53
  54 #if defined(CONFIG_MPC823)
  55 #include <lcdvideo.h>
  56 #endif
  57
  58 #if defined(CONFIG_ATMEL_LCD)
  59 #include <atmel_lcdc.h>
  60 #endif
  61
  62 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  63 #include <libfdt.h>
  64 #endif
  65
  66 /************************************************************************/
  67 /* ** FONT DATA                                                         */
  68 /************************************************************************/
  69 #include <video_font.h>         /* Get font data, width and height      */
  70 #include <video_font_data.h>
  71
  72 /************************************************************************/
  73 /* ** LOGO DATA                                                         */
  74 /************************************************************************/
  75 #ifdef CONFIG_LCD_LOGO
  76 # include <bmp_logo.h>          /* Get logo data, width and height      */
  77 # include <bmp_logo_data.h>
  78 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  79 #  error Default Color Map overlaps with Logo Color Map
  80 # endif
  81 #endif
  82
  83 #ifndef CONFIG_LCD_ALIGNMENT
  84 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  85 #endif
  86
  87 /* By default we scroll by a single line */
  88 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  89 #define CONFIG_CONSOLE_SCROLL_LINES 1
  90 #endif
  91
  92 /************************************************************************/
  93 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  94 /************************************************************************/
  95 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  96 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  97                                         / VIDEO_FONT_HEIGHT)
  98 #else
  99 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
 100 #endif
 101
 102 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
 103 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
 104 #define CONSOLE_ROW_FIRST       lcd_console_address
 105 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 106 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 107                                         - CONSOLE_ROW_SIZE)
 108 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 109 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 110
 111 #if LCD_BPP == LCD_MONOCHROME
 112 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 113                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 114 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
 115 # define COLOR_MASK(c)          (c)
 116 #else
 117 # error Unsupported LCD BPP.
 118 #endif
 119
 120 DECLARE_GLOBAL_DATA_PTR;
 121
 122 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 123 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
 124 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 125
 126 static int lcd_init(void *lcdbase);
 127
 128 static void *lcd_logo(void);
 129
 130 static int lcd_getbgcolor(void);
 131 static void lcd_setfgcolor(int color);
 132 static void lcd_setbgcolor(int color);
 133
 134 static int lcd_color_fg;
 135 static int lcd_color_bg;
 136 int lcd_line_length;
 137
 138 char lcd_is_enabled = 0;
 139
 140 static short console_col;
 141 static short console_row;
 142
 143 static void *lcd_console_address;
 144 static void *lcd_base;                  /* Start of framebuffer memory  */
 145
 146 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 147
 148 /************************************************************************/
 149
 150 /* Flush LCD activity to the caches */
 151 void lcd_sync(void)
 152 {
 153         /*
 154          * flush_dcache_range() is declared in common.h but it seems that some
 155          * architectures do not actually implement it. Is there a way to find
 156          * out whether it exists? For now, ARM is safe.
 157          */
 158 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 159         int line_length;
 160
 161         if (lcd_flush_dcache)
 162                 flush_dcache_range((u32)lcd_base,
 163                         (u32)(lcd_base + lcd_get_size(&line_length)));
 164 #endif
 165 }
 166
 167 void lcd_set_flush_dcache(int flush)
 168 {
 169         lcd_flush_dcache = (flush != 0);
 170 }
 171
 172 /*----------------------------------------------------------------------*/
 173
 174 static void console_scrollup(void)
 175 {
 176         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 177
 178         /* Copy up rows ignoring those that will be overwritten */
 179         memcpy(CONSOLE_ROW_FIRST,
 180                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 181                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 182
 183         /* Clear the last rows */
 184         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 185                 COLOR_MASK(lcd_color_bg),
 186                 CONSOLE_ROW_SIZE * rows);
 187
 188         lcd_sync();
 189         console_row -= rows;
 190 }
 191
 192 /*----------------------------------------------------------------------*/
 193
 194 static inline void console_back(void)
 195 {
 196         if (--console_col < 0) {
 197                 console_col = CONSOLE_COLS-1 ;
 198                 if (--console_row < 0)
 199                         console_row = 0;
 200         }
 201
 202         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 203                 console_row * VIDEO_FONT_HEIGHT, ' ');
 204 }
 205
 206 /*----------------------------------------------------------------------*/
 207
 208 static inline void console_newline(void)
 209 {
 210         console_col = 0;
 211
 212         /* Check if we need to scroll the terminal */
 213         if (++console_row >= CONSOLE_ROWS)
 214                 console_scrollup();
 215         else
 216                 lcd_sync();
 217 }
 218
 219 /*----------------------------------------------------------------------*/
 220
 221 void lcd_putc(const char c)
 222 {
 223         if (!lcd_is_enabled) {
 224                 serial_putc(c);
 225
 226                 return;
 227         }
 228
 229         switch (c) {
 230         case '\r':
 231                 console_col = 0;
 232
 233                 return;
 234         case '\n':
 235                 console_newline();
 236
 237                 return;
 238         case '\t':      /* Tab (8 chars alignment) */
 239                 console_col +=  8;
 240                 console_col &= ~7;
 241
 242                 if (console_col >= CONSOLE_COLS)
 243                         console_newline();
 244
 245                 return;
 246         case '\b':
 247                 console_back();
 248
 249                 return;
 250         default:
 251                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 252                         console_row * VIDEO_FONT_HEIGHT, c);
 253                 if (++console_col >= CONSOLE_COLS)
 254                         console_newline();
 255         }
 256 }
 257
 258 /*----------------------------------------------------------------------*/
 259
 260 void lcd_puts(const char *s)
 261 {
 262         if (!lcd_is_enabled) {
 263                 serial_puts(s);
 264
 265                 return;
 266         }
 267
 268         while (*s)
 269                 lcd_putc(*s++);
 270
 271         lcd_sync();
 272 }
 273
 274 /*----------------------------------------------------------------------*/
 275
 276 void lcd_printf(const char *fmt, ...)
 277 {
 278         va_list args;
 279         char buf[CONFIG_SYS_PBSIZE];
 280
 281         va_start(args, fmt);
 282         vsprintf(buf, fmt, args);
 283         va_end(args);
 284
 285         lcd_puts(buf);
 286 }
 287
 288 /************************************************************************/
 289 /* ** Low-Level Graphics Routines                                       */
 290 /************************************************************************/
 291
 292 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 293 {
 294         uchar *dest;
 295         ushort row;
 296
 297 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 298         y += BMP_LOGO_HEIGHT;
 299 #endif
 300
 301 #if LCD_BPP == LCD_MONOCHROME
 302         ushort off  = x * (1 << LCD_BPP) % 8;
 303 #endif
 304
 305         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 306
 307         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 308                 uchar *s = str;
 309                 int i;
 310 #if LCD_BPP == LCD_COLOR16
 311                 ushort *d = (ushort *)dest;
 312 #else
 313                 uchar *d = dest;
 314 #endif
 315
 316 #if LCD_BPP == LCD_MONOCHROME
 317                 uchar rest = *d & -(1 << (8 - off));
 318                 uchar sym;
 319 #endif
 320                 for (i = 0; i < count; ++i) {
 321                         uchar c, bits;
 322
 323                         c = *s++;
 324                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 325
 326 #if LCD_BPP == LCD_MONOCHROME
 327                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 328                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 329
 330                         *d++ = rest | (sym >> off);
 331                         rest = sym << (8-off);
 332 #elif LCD_BPP == LCD_COLOR8
 333                         for (c = 0; c < 8; ++c) {
 334                                 *d++ = (bits & 0x80) ?
 335                                                 lcd_color_fg : lcd_color_bg;
 336                                 bits <<= 1;
 337                         }
 338 #elif LCD_BPP == LCD_COLOR16
 339                         for (c = 0; c < 8; ++c) {
 340                                 *d++ = (bits & 0x80) ?
 341                                                 lcd_color_fg : lcd_color_bg;
 342                                 bits <<= 1;
 343                         }
 344 #endif
 345                 }
 346 #if LCD_BPP == LCD_MONOCHROME
 347                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 348 #endif
 349         }
 350 }
 351
 352 /*----------------------------------------------------------------------*/
 353
 354 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 355 {
 356         lcd_drawchars(x, y, s, strlen((char *)s));
 357 }
 358
 359 /*----------------------------------------------------------------------*/
 360
 361 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 362 {
 363         lcd_drawchars(x, y, &c, 1);
 364 }
 365
 366 /************************************************************************/
 367 /**  Small utility to check that you got the colours right              */
 368 /************************************************************************/
 369 #ifdef LCD_TEST_PATTERN
 370
 371 #define N_BLK_VERT      2
 372 #define N_BLK_HOR       3
 373
 374 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 375         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 376         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 377 };
 378
 379 static void test_pattern(void)
 380 {
 381         ushort v_max  = panel_info.vl_row;
 382         ushort h_max  = panel_info.vl_col;
 383         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 384         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 385         ushort v, h;
 386         uchar *pix = (uchar *)lcd_base;
 387
 388         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 389                 h_max, v_max, h_step, v_step);
 390
 391         /* WARNING: Code silently assumes 8bit/pixel */
 392         for (v = 0; v < v_max; ++v) {
 393                 uchar iy = v / v_step;
 394                 for (h = 0; h < h_max; ++h) {
 395                         uchar ix = N_BLK_HOR * iy + h / h_step;
 396                         *pix++ = test_colors[ix];
 397                 }
 398         }
 399 }
 400 #endif /* LCD_TEST_PATTERN */
 401
 402
 403 /************************************************************************/
 404 /* ** GENERIC Initialization Routines                                   */
 405 /************************************************************************/
 406
 407 int lcd_get_size(int *line_length)
 408 {
 409         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 410         return *line_length * panel_info.vl_row;
 411 }
 412
 413 int drv_lcd_init(void)
 414 {
 415         struct stdio_dev lcddev;
 416         int rc;
 417
 418         lcd_base = (void *) gd->fb_base;
 419
 420         lcd_init(lcd_base);             /* LCD initialization */
 421
 422         /* Device initialization */
 423         memset(&lcddev, 0, sizeof(lcddev));
 424
 425         strcpy(lcddev.name, "lcd");
 426         lcddev.ext   = 0;                       /* No extensions */
 427         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 428         lcddev.putc  = lcd_putc;                /* 'putc' function */
 429         lcddev.puts  = lcd_puts;                /* 'puts' function */
 430
 431         rc = stdio_register(&lcddev);
 432
 433         return (rc == 0) ? 1 : rc;
 434 }
 435
 436 /*----------------------------------------------------------------------*/
 437 void lcd_clear(void)
 438 {
 439 #if LCD_BPP == LCD_MONOCHROME
 440         /* Setting the palette */
 441         lcd_initcolregs();
 442
 443 #elif LCD_BPP == LCD_COLOR8
 444         /* Setting the palette */
 445         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 446         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 447         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 448         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 449         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 450         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 451         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 452         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 453         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 454 #endif
 455
 456 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 457         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 458         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 459 #else
 460         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 461         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 462 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 463
 464 #ifdef  LCD_TEST_PATTERN
 465         test_pattern();
 466 #else
 467         /* set framebuffer to background color */
 468         memset((char *)lcd_base,
 469                 COLOR_MASK(lcd_getbgcolor()),
 470                 lcd_line_length * panel_info.vl_row);
 471 #endif
 472         /* Paint the logo and retrieve LCD base address */
 473         debug("[LCD] Drawing the logo...\n");
 474         lcd_console_address = lcd_logo();
 475
 476         console_col = 0;
 477         console_row = 0;
 478         lcd_sync();
 479 }
 480
 481 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 482                         char *const argv[])
 483 {
 484         lcd_clear();
 485         return 0;
 486 }
 487
 488 U_BOOT_CMD(
 489         cls,    1,      1,      do_lcd_clear,
 490         "clear screen",
 491         ""
 492 );
 493
 494 /*----------------------------------------------------------------------*/
 495
 496 static int lcd_init(void *lcdbase)
 497 {
 498         /* Initialize the lcd controller */
 499         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 500
 501         lcd_ctrl_init(lcdbase);
 502
 503         /*
 504          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 505          * the 'lcdbase' argument and uses custom lcd base address
 506          * by setting up gd->fb_base. Check for this condition and fixup
 507          * 'lcd_base' address.
 508          */
 509         if ((unsigned long)lcdbase != gd->fb_base)
 510                 lcd_base = (void *)gd->fb_base;
 511
 512         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 513
 514         lcd_get_size(&lcd_line_length);
 515         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 516         lcd_is_enabled = 1;
 517         lcd_clear();
 518         lcd_enable();
 519
 520         /* Initialize the console */
 521         console_col = 0;
 522 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 523         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 524 #else
 525         console_row = 1;        /* leave 1 blank line below logo */
 526 #endif
 527
 528         return 0;
 529 }
 530
 531
 532 /************************************************************************/
 533 /* ** ROM capable initialization part - needed to reserve FB memory     */
 534 /************************************************************************/
 535 /*
 536  * This is called early in the system initialization to grab memory
 537  * for the LCD controller.
 538  * Returns new address for monitor, after reserving LCD buffer memory
 539  *
 540  * Note that this is running from ROM, so no write access to global data.
 541  */
 542 ulong lcd_setmem(ulong addr)
 543 {
 544         ulong size;
 545         int line_length;
 546
 547         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 548                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 549
 550         size = lcd_get_size(&line_length);
 551
 552         /* Round up to nearest full page, or MMU section if defined */
 553         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 554         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 555
 556         /* Allocate pages for the frame buffer. */
 557         addr -= size;
 558
 559         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 560               size >> 10, addr);
 561
 562         return addr;
 563 }
 564
 565 /*----------------------------------------------------------------------*/
 566
 567 static void lcd_setfgcolor(int color)
 568 {
 569         lcd_color_fg = color;
 570 }
 571
 572 /*----------------------------------------------------------------------*/
 573
 574 static void lcd_setbgcolor(int color)
 575 {
 576         lcd_color_bg = color;
 577 }
 578
 579 /*----------------------------------------------------------------------*/
 580
 581 int lcd_getfgcolor(void)
 582 {
 583         return lcd_color_fg;
 584 }
 585
 586 /*----------------------------------------------------------------------*/
 587
 588 static int lcd_getbgcolor(void)
 589 {
 590         return lcd_color_bg;
 591 }
 592
 593 /************************************************************************/
 594 /* ** Chipset depending Bitmap / Logo stuff...                          */
 595 /************************************************************************/
 596 static inline ushort *configuration_get_cmap(void)
 597 {
 598 #if defined CONFIG_CPU_PXA
 599         struct pxafb_info *fbi = &panel_info.pxa;
 600         return (ushort *)fbi->palette;
 601 #elif defined(CONFIG_MPC823)
 602         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 603         cpm8xx_t *cp = &(immr->im_cpm);
 604         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 605 #elif defined(CONFIG_ATMEL_LCD)
 606         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 607 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 608         return panel_info.cmap;
 609 #elif defined(CONFIG_LCD_LOGO)
 610         return bmp_logo_palette;
 611 #else
 612         return NULL;
 613 #endif
 614 }
 615
 616 #ifdef CONFIG_LCD_LOGO
 617 void bitmap_plot(int x, int y)
 618 {
 619 #ifdef CONFIG_ATMEL_LCD
 620         uint *cmap = (uint *)bmp_logo_palette;
 621 #else
 622         ushort *cmap = (ushort *)bmp_logo_palette;
 623 #endif
 624         ushort i, j;
 625         uchar *bmap;
 626         uchar *fb;
 627         ushort *fb16;
 628 #if defined(CONFIG_MPC823)
 629         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 630         cpm8xx_t *cp = &(immr->im_cpm);
 631 #endif
 632         unsigned bpix = NBITS(panel_info.vl_bpix);
 633
 634         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 635                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 636                 ARRAY_SIZE(bmp_logo_palette));
 637
 638         bmap = &bmp_logo_bitmap[0];
 639         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 640
 641         if (bpix < 12) {
 642                 /* Leave room for default color map
 643                  * default case: generic system with no cmap (most likely 16bpp)
 644                  * cmap was set to the source palette, so no change is done.
 645                  * This avoids even more ifdefs in the next stanza
 646                  */
 647 #if defined(CONFIG_MPC823)
 648                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 649 #elif defined(CONFIG_ATMEL_LCD)
 650                 cmap = (uint *)configuration_get_cmap();
 651 #else
 652                 cmap = configuration_get_cmap();
 653 #endif
 654
 655                 WATCHDOG_RESET();
 656
 657                 /* Set color map */
 658                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 659                         ushort colreg = bmp_logo_palette[i];
 660 #ifdef CONFIG_ATMEL_LCD
 661                         uint lut_entry;
 662 #ifdef CONFIG_ATMEL_LCD_BGR555
 663                         lut_entry = ((colreg & 0x000F) << 11) |
 664                                         ((colreg & 0x00F0) <<  2) |
 665                                         ((colreg & 0x0F00) >>  7);
 666 #else /* CONFIG_ATMEL_LCD_RGB565 */
 667                         lut_entry = ((colreg & 0x000F) << 1) |
 668                                         ((colreg & 0x00F0) << 3) |
 669                                         ((colreg & 0x0F00) << 4);
 670 #endif
 671                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 672                         cmap++;
 673 #else /* !CONFIG_ATMEL_LCD */
 674 #ifdef  CONFIG_SYS_INVERT_COLORS
 675                         *cmap++ = 0xffff - colreg;
 676 #else
 677                         *cmap++ = colreg;
 678 #endif
 679 #endif /* CONFIG_ATMEL_LCD */
 680                 }
 681
 682                 WATCHDOG_RESET();
 683
 684                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 685                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 686                         bmap += BMP_LOGO_WIDTH;
 687                         fb += panel_info.vl_col;
 688                 }
 689         }
 690         else { /* true color mode */
 691                 u16 col16;
 692                 fb16 = (ushort *)fb;
 693                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 694                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 695                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 696                                 fb16[j] =
 697                                         ((col16 & 0x000F) << 1) |
 698                                         ((col16 & 0x00F0) << 3) |
 699                                         ((col16 & 0x0F00) << 4);
 700                                 }
 701                         bmap += BMP_LOGO_WIDTH;
 702                         fb16 += panel_info.vl_col;
 703                 }
 704         }
 705
 706         WATCHDOG_RESET();
 707         lcd_sync();
 708 }
 709 #else
 710 static inline void bitmap_plot(int x, int y) {}
 711 #endif /* CONFIG_LCD_LOGO */
 712
 713 /*----------------------------------------------------------------------*/
 714 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 715 /*
 716  * Display the BMP file located at address bmp_image.
 717  * Only uncompressed.
 718  */
 719
 720 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 721 #define BMP_ALIGN_CENTER        0x7FFF
 722
 723 static void splash_align_axis(int *axis, unsigned long panel_size,
 724                                         unsigned long picture_size)
 725 {
 726         unsigned long panel_picture_delta = panel_size - picture_size;
 727         unsigned long axis_alignment;
 728
 729         if (*axis == BMP_ALIGN_CENTER)
 730                 axis_alignment = panel_picture_delta / 2;
 731         else if (*axis < 0)
 732                 axis_alignment = panel_picture_delta + *axis + 1;
 733         else
 734                 return;
 735
 736         *axis = max(0, axis_alignment);
 737 }
 738 #endif
 739
 740
 741 #ifdef CONFIG_LCD_BMP_RLE8
 742
 743 #define BMP_RLE8_ESCAPE         0
 744 #define BMP_RLE8_EOL            0
 745 #define BMP_RLE8_EOBMP          1
 746 #define BMP_RLE8_DELTA          2
 747
 748 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 749                                   int cnt)
 750 {
 751         while (cnt > 0) {
 752                 *(*fbp)++ = cmap[*bmap++];
 753                 cnt--;
 754         }
 755 }
 756
 757 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 758 {
 759         ushort *fb = *fbp;
 760         int cnt_8copy = cnt >> 3;
 761
 762         cnt -= cnt_8copy << 3;
 763         while (cnt_8copy > 0) {
 764                 *fb++ = c;
 765                 *fb++ = c;
 766                 *fb++ = c;
 767                 *fb++ = c;
 768                 *fb++ = c;
 769                 *fb++ = c;
 770                 *fb++ = c;
 771                 *fb++ = c;
 772                 cnt_8copy--;
 773         }
 774         while (cnt > 0) {
 775                 *fb++ = c;
 776                 cnt--;
 777         }
 778         *fbp = fb;
 779 }
 780
 781 /*
 782  * Do not call this function directly, must be called from lcd_display_bitmap.
 783  */
 784 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 785                                     int x_off, int y_off)
 786 {
 787         uchar *bmap;
 788         ulong width, height;
 789         ulong cnt, runlen;
 790         int x, y;
 791         int decode = 1;
 792
 793         width = le32_to_cpu(bmp->header.width);
 794         height = le32_to_cpu(bmp->header.height);
 795         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 796
 797         x = 0;
 798         y = height - 1;
 799
 800         while (decode) {
 801                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 802                         switch (bmap[1]) {
 803                         case BMP_RLE8_EOL:
 804                                 /* end of line */
 805                                 bmap += 2;
 806                                 x = 0;
 807                                 y--;
 808                                 /* 16bpix, 2-byte per pixel, width should *2 */
 809                                 fb -= (width * 2 + lcd_line_length);
 810                                 break;
 811                         case BMP_RLE8_EOBMP:
 812                                 /* end of bitmap */
 813                                 decode = 0;
 814                                 break;
 815                         case BMP_RLE8_DELTA:
 816                                 /* delta run */
 817                                 x += bmap[2];
 818                                 y -= bmap[3];
 819                                 /* 16bpix, 2-byte per pixel, x should *2 */
 820                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 821                                         * lcd_line_length + (x + x_off) * 2);
 822                                 bmap += 4;
 823                                 break;
 824                         default:
 825                                 /* unencoded run */
 826                                 runlen = bmap[1];
 827                                 bmap += 2;
 828                                 if (y < height) {
 829                                         if (x < width) {
 830                                                 if (x + runlen > width)
 831                                                         cnt = width - x;
 832                                                 else
 833                                                         cnt = runlen;
 834                                                 draw_unencoded_bitmap(
 835                                                         (ushort **)&fb,
 836                                                         bmap, cmap, cnt);
 837                                         }
 838                                         x += runlen;
 839                                 }
 840                                 bmap += runlen;
 841                                 if (runlen & 1)
 842                                         bmap++;
 843                         }
 844                 } else {
 845                         /* encoded run */
 846                         if (y < height) {
 847                                 runlen = bmap[0];
 848                                 if (x < width) {
 849                                         /* aggregate the same code */
 850                                         while (bmap[0] == 0xff &&
 851                                                bmap[2] != BMP_RLE8_ESCAPE &&
 852                                                bmap[1] == bmap[3]) {
 853                                                 runlen += bmap[2];
 854                                                 bmap += 2;
 855                                         }
 856                                         if (x + runlen > width)
 857                                                 cnt = width - x;
 858                                         else
 859                                                 cnt = runlen;
 860                                         draw_encoded_bitmap((ushort **)&fb,
 861                                                 cmap[bmap[1]], cnt);
 862                                 }
 863                                 x += runlen;
 864                         }
 865                         bmap += 2;
 866                 }
 867         }
 868 }
 869 #endif
 870
 871 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 872 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 873 #else
 874 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 875 #endif
 876
 877 #if defined(CONFIG_BMP_16BPP)
 878 #if defined(CONFIG_ATMEL_LCD_BGR555)
 879 static inline void fb_put_word(uchar **fb, uchar **from)
 880 {
 881         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 882         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 883         *from += 2;
 884 }
 885 #else
 886 static inline void fb_put_word(uchar **fb, uchar **from)
 887 {
 888         *(*fb)++ = *(*from)++;
 889         *(*fb)++ = *(*from)++;
 890 }
 891 #endif
 892 #endif /* CONFIG_BMP_16BPP */
 893
 894 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 895 {
 896 #if !defined(CONFIG_MCC200)
 897         ushort *cmap = NULL;
 898 #endif
 899         ushort *cmap_base = NULL;
 900         ushort i, j;
 901         uchar *fb;
 902         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 903         uchar *bmap;
 904         ushort padded_width;
 905         unsigned long width, height, byte_width;
 906         unsigned long pwidth = panel_info.vl_col;
 907         unsigned colors, bpix, bmp_bpix;
 908
 909         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 910                 bmp->header.signature[1] == 'M')) {
 911                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 912
 913                 return 1;
 914         }
 915
 916         width = le32_to_cpu(bmp->header.width);
 917         height = le32_to_cpu(bmp->header.height);
 918         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 919         colors = 1 << bmp_bpix;
 920
 921         bpix = NBITS(panel_info.vl_bpix);
 922
 923         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 924                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 925                         bpix, bmp_bpix);
 926
 927                 return 1;
 928         }
 929
 930         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 931         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 932                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 933                         bpix,
 934                         le16_to_cpu(bmp->header.bit_count));
 935
 936                 return 1;
 937         }
 938
 939         debug("Display-bmp: %d x %d  with %d colors\n",
 940                 (int)width, (int)height, (int)colors);
 941
 942 #if !defined(CONFIG_MCC200)
 943         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 944         if (bmp_bpix == 8) {
 945                 cmap = configuration_get_cmap();
 946                 cmap_base = cmap;
 947
 948                 /* Set color map */
 949                 for (i = 0; i < colors; ++i) {
 950                         bmp_color_table_entry_t cte = bmp->color_table[i];
 951 #if !defined(CONFIG_ATMEL_LCD)
 952                         ushort colreg =
 953                                 ( ((cte.red)   << 8) & 0xf800) |
 954                                 ( ((cte.green) << 3) & 0x07e0) |
 955                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 956 #ifdef CONFIG_SYS_INVERT_COLORS
 957                         *cmap = 0xffff - colreg;
 958 #else
 959                         *cmap = colreg;
 960 #endif
 961 #if defined(CONFIG_MPC823)
 962                         cmap--;
 963 #else
 964                         cmap++;
 965 #endif
 966 #else /* CONFIG_ATMEL_LCD */
 967                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 968 #endif
 969                 }
 970         }
 971 #endif
 972
 973         /*
 974          *  BMP format for Monochrome assumes that the state of a
 975          * pixel is described on a per Bit basis, not per Byte.
 976          *  So, in case of Monochrome BMP we should align widths
 977          * on a byte boundary and convert them from Bit to Byte
 978          * units.
 979          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 980          * their own ways, so make the converting to be MCC200
 981          * specific.
 982          */
 983 #if defined(CONFIG_MCC200)
 984         if (bpix == 1) {
 985                 width = ((width + 7) & ~7) >> 3;
 986                 x     = ((x + 7) & ~7) >> 3;
 987                 pwidth= ((pwidth + 7) & ~7) >> 3;
 988         }
 989 #endif
 990
 991         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 992
 993 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 994         splash_align_axis(&x, pwidth, width);
 995         splash_align_axis(&y, panel_info.vl_row, height);
 996 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 997
 998         if ((x + width) > pwidth)
 999                 width = pwidth - x;
1000         if ((y + height) > panel_info.vl_row)
1001                 height = panel_info.vl_row - y;
1002
1003         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
1004         fb   = (uchar *) (lcd_base +
1005                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1006
1007         switch (bmp_bpix) {
1008         case 1: /* pass through */
1009         case 8:
1010 #ifdef CONFIG_LCD_BMP_RLE8
1011                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
1012                         if (bpix != 16) {
1013                                 /* TODO implement render code for bpix != 16 */
1014                                 printf("Error: only support 16 bpix");
1015                                 return 1;
1016                         }
1017                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1018                         break;
1019                 }
1020 #endif
1021
1022                 if (bpix != 16)
1023                         byte_width = width;
1024                 else
1025                         byte_width = width * 2;
1026
1027                 for (i = 0; i < height; ++i) {
1028                         WATCHDOG_RESET();
1029                         for (j = 0; j < width; j++) {
1030                                 if (bpix != 16) {
1031                                         FB_PUT_BYTE(fb, bmap);
1032                                 } else {
1033                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1034                                         fb += sizeof(uint16_t) / sizeof(*fb);
1035                                 }
1036                         }
1037                         bmap += (padded_width - width);
1038                         fb -= byte_width + lcd_line_length;
1039                 }
1040                 break;
1041
1042 #if defined(CONFIG_BMP_16BPP)
1043         case 16:
1044                 for (i = 0; i < height; ++i) {
1045                         WATCHDOG_RESET();
1046                         for (j = 0; j < width; j++)
1047                                 fb_put_word(&fb, &bmap);
1048
1049                         bmap += (padded_width - width) * 2;
1050                         fb -= width * 2 + lcd_line_length;
1051                 }
1052                 break;
1053 #endif /* CONFIG_BMP_16BPP */
1054
1055 #if defined(CONFIG_BMP_32BPP)
1056         case 32:
1057                 for (i = 0; i < height; ++i) {
1058                         for (j = 0; j < width; j++) {
1059                                 *(fb++) = *(bmap++);
1060                                 *(fb++) = *(bmap++);
1061                                 *(fb++) = *(bmap++);
1062                                 *(fb++) = *(bmap++);
1063                         }
1064                         fb -= lcd_line_length + width * (bpix / 8);
1065                 }
1066                 break;
1067 #endif /* CONFIG_BMP_32BPP */
1068         default:
1069                 break;
1070         };
1071
1072         lcd_sync();
1073         return 0;
1074 }
1075 #endif
1076
1077 static void *lcd_logo(void)
1078 {
1079 #ifdef CONFIG_SPLASH_SCREEN
1080         char *s;
1081         ulong addr;
1082         static int do_splash = 1;
1083
1084         if (do_splash && (s = getenv("splashimage")) != NULL) {
1085                 int x = 0, y = 0;
1086                 do_splash = 0;
1087
1088                 if (splash_screen_prepare())
1089                         return (void *)lcd_base;
1090
1091                 addr = simple_strtoul (s, NULL, 16);
1092
1093                 splash_get_pos(&x, &y);
1094
1095                 if (bmp_display(addr, x, y) == 0)
1096                         return (void *)lcd_base;
1097         }
1098 #endif /* CONFIG_SPLASH_SCREEN */
1099
1100         bitmap_plot(0, 0);
1101
1102 #ifdef CONFIG_LCD_INFO
1103         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1104         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1105         lcd_show_board_info();
1106 #endif /* CONFIG_LCD_INFO */
1107
1108 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1109         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1110 #else
1111         return (void *)lcd_base;
1112 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1113 }
1114
1115 #ifdef CONFIG_SPLASHIMAGE_GUARD
1116 static int on_splashimage(const char *name, const char *value, enum env_op op,
1117         int flags)
1118 {
1119         ulong addr;
1120         int aligned;
1121
1122         if (op == env_op_delete)
1123                 return 0;
1124
1125         addr = simple_strtoul(value, NULL, 16);
1126         /* See README.displaying-bmps */
1127         aligned = (addr % 4 == 2);
1128         if (!aligned) {
1129                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1130                 return -1;
1131         }
1132
1133         return 0;
1134 }
1135
1136 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1137 #endif
1138
1139 void lcd_position_cursor(unsigned col, unsigned row)
1140 {
1141         console_col = min(col, CONSOLE_COLS - 1);
1142         console_row = min(row, CONSOLE_ROWS - 1);
1143 }
1144
1145 int lcd_get_pixel_width(void)
1146 {
1147         return panel_info.vl_col;
1148 }
1149
1150 int lcd_get_pixel_height(void)
1151 {
1152         return panel_info.vl_row;
1153 }
1154
1155 int lcd_get_screen_rows(void)
1156 {
1157         return CONSOLE_ROWS;
1158 }
1159
1160 int lcd_get_screen_columns(void)
1161 {
1162         return CONSOLE_COLS;
1163 }
1164
1165 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1166 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1167 {
1168         u32 stride;
1169         fdt32_t cells[2];
1170         int ret;
1171         static const char format[] =
1172 #if LCD_BPP == LCD_COLOR16
1173                 "r5g6b5";
1174 #else
1175                 "";
1176 #endif
1177
1178         if (!format[0])
1179                 return -1;
1180
1181         stride = panel_info.vl_col * 2;
1182
1183         cells[0] = cpu_to_fdt32(gd->fb_base);
1184         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1185         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1186         if (ret < 0)
1187                 return -1;
1188
1189         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1190         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1191         if (ret < 0)
1192                 return -1;
1193
1194         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1195         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1196         if (ret < 0)
1197                 return -1;
1198
1199         cells[0] = cpu_to_fdt32(stride);
1200         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1201         if (ret < 0)
1202                 return -1;
1203
1204         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1205         if (ret < 0)
1206                 return -1;
1207
1208         ret = fdt_delprop(blob, off, "status");
1209         if (ret < 0)
1210                 return -1;
1211
1212         return 0;
1213 }
1214
1215 int lcd_dt_simplefb_add_node(void *blob)
1216 {
1217         static const char compat[] = "simple-framebuffer";
1218         static const char disabled[] = "disabled";
1219         int off, ret;
1220
1221         off = fdt_add_subnode(blob, 0, "framebuffer");
1222         if (off < 0)
1223                 return -1;
1224
1225         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1226         if (ret < 0)
1227                 return -1;
1228
1229         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1230         if (ret < 0)
1231                 return -1;
1232
1233         return lcd_dt_simplefb_configure_node(blob, off);
1234 }
1235
1236 int lcd_dt_simplefb_enable_existing_node(void *blob)
1237 {
1238         int off;
1239
1240         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1241         if (off < 0)
1242                 return -1;
1243
1244         return lcd_dt_simplefb_configure_node(blob, off);
1245 }
1246 #endif