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 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  61 #include <libfdt.h>
  62 #endif
  63
  64 /************************************************************************/
  65 /* ** FONT DATA                                                         */
  66 /************************************************************************/
  67 #include <video_font.h>         /* Get font data, width and height      */
  68 #include <video_font_data.h>
  69
  70 /************************************************************************/
  71 /* ** LOGO DATA                                                         */
  72 /************************************************************************/
  73 #ifdef CONFIG_LCD_LOGO
  74 # include <bmp_logo.h>          /* Get logo data, width and height      */
  75 # include <bmp_logo_data.h>
  76 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  77 #  error Default Color Map overlaps with Logo Color Map
  78 # endif
  79 #endif
  80
  81 #ifndef CONFIG_LCD_ALIGNMENT
  82 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  83 #endif
  84
  85 /* By default we scroll by a single line */
  86 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  87 #define CONFIG_CONSOLE_SCROLL_LINES 1
  88 #endif
  89
  90 /************************************************************************/
  91 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  92 /************************************************************************/
  93 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  94 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  95                                         / VIDEO_FONT_HEIGHT)
  96 #else
  97 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  98 #endif
  99
 100 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
 101 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
 102 #define CONSOLE_ROW_FIRST       lcd_console_address
 103 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 104 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 105                                         - CONSOLE_ROW_SIZE)
 106 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 107 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 108
 109 #if LCD_BPP == LCD_MONOCHROME
 110 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 111                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 112 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
 113 # define COLOR_MASK(c)          (c)
 114 #else
 115 # error Unsupported LCD BPP.
 116 #endif
 117
 118 DECLARE_GLOBAL_DATA_PTR;
 119
 120 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 121 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
 122 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 123
 124 static int lcd_init(void *lcdbase);
 125
 126 static void *lcd_logo(void);
 127
 128 static int lcd_getbgcolor(void);
 129 static void lcd_setfgcolor(int color);
 130 static void lcd_setbgcolor(int color);
 131
 132 static int lcd_color_fg;
 133 static int lcd_color_bg;
 134 int lcd_line_length;
 135
 136 char lcd_is_enabled = 0;
 137
 138 static short console_col;
 139 static short console_row;
 140
 141 static void *lcd_console_address;
 142 static void *lcd_base;                  /* Start of framebuffer memory  */
 143
 144 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 145
 146 /************************************************************************/
 147
 148 /* Flush LCD activity to the caches */
 149 void lcd_sync(void)
 150 {
 151         /*
 152          * flush_dcache_range() is declared in common.h but it seems that some
 153          * architectures do not actually implement it. Is there a way to find
 154          * out whether it exists? For now, ARM is safe.
 155          */
 156 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 157         int line_length;
 158
 159         if (lcd_flush_dcache)
 160                 flush_dcache_range((u32)lcd_base,
 161                         (u32)(lcd_base + lcd_get_size(&line_length)));
 162 #endif
 163 }
 164
 165 void lcd_set_flush_dcache(int flush)
 166 {
 167         lcd_flush_dcache = (flush != 0);
 168 }
 169
 170 /*----------------------------------------------------------------------*/
 171
 172 static void console_scrollup(void)
 173 {
 174         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 175
 176         /* Copy up rows ignoring those that will be overwritten */
 177         memcpy(CONSOLE_ROW_FIRST,
 178                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 179                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 180
 181         /* Clear the last rows */
 182         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 183                 COLOR_MASK(lcd_color_bg),
 184                 CONSOLE_ROW_SIZE * rows);
 185
 186         lcd_sync();
 187         console_row -= rows;
 188 }
 189
 190 /*----------------------------------------------------------------------*/
 191
 192 static inline void console_back(void)
 193 {
 194         if (--console_col < 0) {
 195                 console_col = CONSOLE_COLS-1 ;
 196                 if (--console_row < 0)
 197                         console_row = 0;
 198         }
 199
 200         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 201                 console_row * VIDEO_FONT_HEIGHT, ' ');
 202 }
 203
 204 /*----------------------------------------------------------------------*/
 205
 206 static inline void console_newline(void)
 207 {
 208         console_col = 0;
 209
 210         /* Check if we need to scroll the terminal */
 211         if (++console_row >= CONSOLE_ROWS)
 212                 console_scrollup();
 213         else
 214                 lcd_sync();
 215 }
 216
 217 /*----------------------------------------------------------------------*/
 218
 219 void lcd_putc(const char c)
 220 {
 221         if (!lcd_is_enabled) {
 222                 serial_putc(c);
 223
 224                 return;
 225         }
 226
 227         switch (c) {
 228         case '\r':
 229                 console_col = 0;
 230
 231                 return;
 232         case '\n':
 233                 console_newline();
 234
 235                 return;
 236         case '\t':      /* Tab (8 chars alignment) */
 237                 console_col +=  8;
 238                 console_col &= ~7;
 239
 240                 if (console_col >= CONSOLE_COLS)
 241                         console_newline();
 242
 243                 return;
 244         case '\b':
 245                 console_back();
 246
 247                 return;
 248         default:
 249                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 250                         console_row * VIDEO_FONT_HEIGHT, c);
 251                 if (++console_col >= CONSOLE_COLS)
 252                         console_newline();
 253         }
 254 }
 255
 256 /*----------------------------------------------------------------------*/
 257
 258 void lcd_puts(const char *s)
 259 {
 260         if (!lcd_is_enabled) {
 261                 serial_puts(s);
 262
 263                 return;
 264         }
 265
 266         while (*s)
 267                 lcd_putc(*s++);
 268
 269         lcd_sync();
 270 }
 271
 272 /*----------------------------------------------------------------------*/
 273
 274 void lcd_printf(const char *fmt, ...)
 275 {
 276         va_list args;
 277         char buf[CONFIG_SYS_PBSIZE];
 278
 279         va_start(args, fmt);
 280         vsprintf(buf, fmt, args);
 281         va_end(args);
 282
 283         lcd_puts(buf);
 284 }
 285
 286 /************************************************************************/
 287 /* ** Low-Level Graphics Routines                                       */
 288 /************************************************************************/
 289
 290 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 291 {
 292         uchar *dest;
 293         ushort row;
 294
 295 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 296         y += BMP_LOGO_HEIGHT;
 297 #endif
 298
 299 #if LCD_BPP == LCD_MONOCHROME
 300         ushort off  = x * (1 << LCD_BPP) % 8;
 301 #endif
 302
 303         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 304
 305         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 306                 uchar *s = str;
 307                 int i;
 308 #if LCD_BPP == LCD_COLOR16
 309                 ushort *d = (ushort *)dest;
 310 #else
 311                 uchar *d = dest;
 312 #endif
 313
 314 #if LCD_BPP == LCD_MONOCHROME
 315                 uchar rest = *d & -(1 << (8 - off));
 316                 uchar sym;
 317 #endif
 318                 for (i = 0; i < count; ++i) {
 319                         uchar c, bits;
 320
 321                         c = *s++;
 322                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 323
 324 #if LCD_BPP == LCD_MONOCHROME
 325                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 326                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 327
 328                         *d++ = rest | (sym >> off);
 329                         rest = sym << (8-off);
 330 #elif LCD_BPP == LCD_COLOR8
 331                         for (c = 0; c < 8; ++c) {
 332                                 *d++ = (bits & 0x80) ?
 333                                                 lcd_color_fg : lcd_color_bg;
 334                                 bits <<= 1;
 335                         }
 336 #elif LCD_BPP == LCD_COLOR16
 337                         for (c = 0; c < 8; ++c) {
 338                                 *d++ = (bits & 0x80) ?
 339                                                 lcd_color_fg : lcd_color_bg;
 340                                 bits <<= 1;
 341                         }
 342 #endif
 343                 }
 344 #if LCD_BPP == LCD_MONOCHROME
 345                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 346 #endif
 347         }
 348 }
 349
 350 /*----------------------------------------------------------------------*/
 351
 352 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
 353 {
 354         lcd_drawchars(x, y, s, strlen((char *)s));
 355 }
 356
 357 /*----------------------------------------------------------------------*/
 358
 359 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 360 {
 361         lcd_drawchars(x, y, &c, 1);
 362 }
 363
 364 /************************************************************************/
 365 /**  Small utility to check that you got the colours right              */
 366 /************************************************************************/
 367 #ifdef LCD_TEST_PATTERN
 368
 369 #define N_BLK_VERT      2
 370 #define N_BLK_HOR       3
 371
 372 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 373         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 374         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 375 };
 376
 377 static void test_pattern(void)
 378 {
 379         ushort v_max  = panel_info.vl_row;
 380         ushort h_max  = panel_info.vl_col;
 381         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 382         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 383         ushort v, h;
 384         uchar *pix = (uchar *)lcd_base;
 385
 386         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 387                 h_max, v_max, h_step, v_step);
 388
 389         /* WARNING: Code silently assumes 8bit/pixel */
 390         for (v = 0; v < v_max; ++v) {
 391                 uchar iy = v / v_step;
 392                 for (h = 0; h < h_max; ++h) {
 393                         uchar ix = N_BLK_HOR * iy + h / h_step;
 394                         *pix++ = test_colors[ix];
 395                 }
 396         }
 397 }
 398 #endif /* LCD_TEST_PATTERN */
 399
 400
 401 /************************************************************************/
 402 /* ** GENERIC Initialization Routines                                   */
 403 /************************************************************************/
 404
 405 int lcd_get_size(int *line_length)
 406 {
 407         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 408         return *line_length * panel_info.vl_row;
 409 }
 410
 411 int drv_lcd_init(void)
 412 {
 413         struct stdio_dev lcddev;
 414         int rc;
 415
 416         lcd_base = (void *) gd->fb_base;
 417
 418         lcd_init(lcd_base);             /* LCD initialization */
 419
 420         /* Device initialization */
 421         memset(&lcddev, 0, sizeof(lcddev));
 422
 423         strcpy(lcddev.name, "lcd");
 424         lcddev.ext   = 0;                       /* No extensions */
 425         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 426         lcddev.putc  = lcd_putc;                /* 'putc' function */
 427         lcddev.puts  = lcd_puts;                /* 'puts' function */
 428
 429         rc = stdio_register(&lcddev);
 430
 431         return (rc == 0) ? 1 : rc;
 432 }
 433
 434 /*----------------------------------------------------------------------*/
 435 void lcd_clear(void)
 436 {
 437 #if LCD_BPP == LCD_MONOCHROME
 438         /* Setting the palette */
 439         lcd_initcolregs();
 440
 441 #elif LCD_BPP == LCD_COLOR8
 442         /* Setting the palette */
 443         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 444         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 445         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 446         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 447         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 448         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 449         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 450         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 451         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 452 #endif
 453
 454 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 455         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 456         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 457 #else
 458         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 459         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 460 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 461
 462 #ifdef  LCD_TEST_PATTERN
 463         test_pattern();
 464 #else
 465         /* set framebuffer to background color */
 466         memset((char *)lcd_base,
 467                 COLOR_MASK(lcd_getbgcolor()),
 468                 lcd_line_length * panel_info.vl_row);
 469 #endif
 470         /* Paint the logo and retrieve LCD base address */
 471         debug("[LCD] Drawing the logo...\n");
 472         lcd_console_address = lcd_logo();
 473
 474         console_col = 0;
 475         console_row = 0;
 476         lcd_sync();
 477 }
 478
 479 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 480                         char *const argv[])
 481 {
 482         lcd_clear();
 483         return 0;
 484 }
 485
 486 U_BOOT_CMD(
 487         cls,    1,      1,      do_lcd_clear,
 488         "clear screen",
 489         ""
 490 );
 491
 492 /*----------------------------------------------------------------------*/
 493
 494 static int lcd_init(void *lcdbase)
 495 {
 496         /* Initialize the lcd controller */
 497         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 498
 499         lcd_ctrl_init(lcdbase);
 500
 501         /*
 502          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
 503          * the 'lcdbase' argument and uses custom lcd base address
 504          * by setting up gd->fb_base. Check for this condition and fixup
 505          * 'lcd_base' address.
 506          */
 507         if ((unsigned long)lcdbase != gd->fb_base)
 508                 lcd_base = (void *)gd->fb_base;
 509
 510         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 511
 512         lcd_get_size(&lcd_line_length);
 513         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 514         lcd_is_enabled = 1;
 515         lcd_clear();
 516         lcd_enable();
 517
 518         /* Initialize the console */
 519         console_col = 0;
 520 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 521         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 522 #else
 523         console_row = 1;        /* leave 1 blank line below logo */
 524 #endif
 525
 526         return 0;
 527 }
 528
 529
 530 /************************************************************************/
 531 /* ** ROM capable initialization part - needed to reserve FB memory     */
 532 /************************************************************************/
 533 /*
 534  * This is called early in the system initialization to grab memory
 535  * for the LCD controller.
 536  * Returns new address for monitor, after reserving LCD buffer memory
 537  *
 538  * Note that this is running from ROM, so no write access to global data.
 539  */
 540 ulong lcd_setmem(ulong addr)
 541 {
 542         ulong size;
 543         int line_length;
 544
 545         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 546                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 547
 548         size = lcd_get_size(&line_length);
 549
 550         /* Round up to nearest full page, or MMU section if defined */
 551         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 552         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 553
 554         /* Allocate pages for the frame buffer. */
 555         addr -= size;
 556
 557         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 558               size >> 10, addr);
 559
 560         return addr;
 561 }
 562
 563 /*----------------------------------------------------------------------*/
 564
 565 static void lcd_setfgcolor(int color)
 566 {
 567         lcd_color_fg = color;
 568 }
 569
 570 /*----------------------------------------------------------------------*/
 571
 572 static void lcd_setbgcolor(int color)
 573 {
 574         lcd_color_bg = color;
 575 }
 576
 577 /*----------------------------------------------------------------------*/
 578
 579 int lcd_getfgcolor(void)
 580 {
 581         return lcd_color_fg;
 582 }
 583
 584 /*----------------------------------------------------------------------*/
 585
 586 static int lcd_getbgcolor(void)
 587 {
 588         return lcd_color_bg;
 589 }
 590
 591 /************************************************************************/
 592 /* ** Chipset depending Bitmap / Logo stuff...                          */
 593 /************************************************************************/
 594 static inline ushort *configuration_get_cmap(void)
 595 {
 596 #if defined CONFIG_CPU_PXA
 597         struct pxafb_info *fbi = &panel_info.pxa;
 598         return (ushort *)fbi->palette;
 599 #elif defined(CONFIG_MPC823)
 600         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 601         cpm8xx_t *cp = &(immr->im_cpm);
 602         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 603 #elif defined(CONFIG_ATMEL_LCD)
 604         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 605 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 606         return panel_info.cmap;
 607 #elif defined(CONFIG_LCD_LOGO)
 608         return bmp_logo_palette;
 609 #else
 610         return NULL;
 611 #endif
 612 }
 613
 614 #ifdef CONFIG_LCD_LOGO
 615 void bitmap_plot(int x, int y)
 616 {
 617 #ifdef CONFIG_ATMEL_LCD
 618         uint *cmap = (uint *)bmp_logo_palette;
 619 #else
 620         ushort *cmap = (ushort *)bmp_logo_palette;
 621 #endif
 622         ushort i, j;
 623         uchar *bmap;
 624         uchar *fb;
 625         ushort *fb16;
 626 #if defined(CONFIG_MPC823)
 627         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 628         cpm8xx_t *cp = &(immr->im_cpm);
 629 #endif
 630         unsigned bpix = NBITS(panel_info.vl_bpix);
 631
 632         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 633                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 634                 ARRAY_SIZE(bmp_logo_palette));
 635
 636         bmap = &bmp_logo_bitmap[0];
 637         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 638
 639         if (bpix < 12) {
 640                 /* Leave room for default color map
 641                  * default case: generic system with no cmap (most likely 16bpp)
 642                  * cmap was set to the source palette, so no change is done.
 643                  * This avoids even more ifdefs in the next stanza
 644                  */
 645 #if defined(CONFIG_MPC823)
 646                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 647 #elif defined(CONFIG_ATMEL_LCD)
 648                 cmap = (uint *)configuration_get_cmap();
 649 #else
 650                 cmap = configuration_get_cmap();
 651 #endif
 652
 653                 WATCHDOG_RESET();
 654
 655                 /* Set color map */
 656                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 657                         ushort colreg = bmp_logo_palette[i];
 658 #ifdef CONFIG_ATMEL_LCD
 659                         uint lut_entry;
 660 #ifdef CONFIG_ATMEL_LCD_BGR555
 661                         lut_entry = ((colreg & 0x000F) << 11) |
 662                                         ((colreg & 0x00F0) <<  2) |
 663                                         ((colreg & 0x0F00) >>  7);
 664 #else /* CONFIG_ATMEL_LCD_RGB565 */
 665                         lut_entry = ((colreg & 0x000F) << 1) |
 666                                         ((colreg & 0x00F0) << 3) |
 667                                         ((colreg & 0x0F00) << 4);
 668 #endif
 669                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 670                         cmap++;
 671 #else /* !CONFIG_ATMEL_LCD */
 672 #ifdef  CONFIG_SYS_INVERT_COLORS
 673                         *cmap++ = 0xffff - colreg;
 674 #else
 675                         *cmap++ = colreg;
 676 #endif
 677 #endif /* CONFIG_ATMEL_LCD */
 678                 }
 679
 680                 WATCHDOG_RESET();
 681
 682                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 683                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 684                         bmap += BMP_LOGO_WIDTH;
 685                         fb += panel_info.vl_col;
 686                 }
 687         }
 688         else { /* true color mode */
 689                 u16 col16;
 690                 fb16 = (ushort *)fb;
 691                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 692                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 693                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 694                                 fb16[j] =
 695                                         ((col16 & 0x000F) << 1) |
 696                                         ((col16 & 0x00F0) << 3) |
 697                                         ((col16 & 0x0F00) << 4);
 698                                 }
 699                         bmap += BMP_LOGO_WIDTH;
 700                         fb16 += panel_info.vl_col;
 701                 }
 702         }
 703
 704         WATCHDOG_RESET();
 705         lcd_sync();
 706 }
 707 #else
 708 static inline void bitmap_plot(int x, int y) {}
 709 #endif /* CONFIG_LCD_LOGO */
 710
 711 /*----------------------------------------------------------------------*/
 712 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 713 /*
 714  * Display the BMP file located at address bmp_image.
 715  * Only uncompressed.
 716  */
 717
 718 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 719 #define BMP_ALIGN_CENTER        0x7FFF
 720
 721 static void splash_align_axis(int *axis, unsigned long panel_size,
 722                                         unsigned long picture_size)
 723 {
 724         unsigned long panel_picture_delta = panel_size - picture_size;
 725         unsigned long axis_alignment;
 726
 727         if (*axis == BMP_ALIGN_CENTER)
 728                 axis_alignment = panel_picture_delta / 2;
 729         else if (*axis < 0)
 730                 axis_alignment = panel_picture_delta + *axis + 1;
 731         else
 732                 return;
 733
 734         *axis = max(0, axis_alignment);
 735 }
 736 #endif
 737
 738
 739 #ifdef CONFIG_LCD_BMP_RLE8
 740
 741 #define BMP_RLE8_ESCAPE         0
 742 #define BMP_RLE8_EOL            0
 743 #define BMP_RLE8_EOBMP          1
 744 #define BMP_RLE8_DELTA          2
 745
 746 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 747                                   int cnt)
 748 {
 749         while (cnt > 0) {
 750                 *(*fbp)++ = cmap[*bmap++];
 751                 cnt--;
 752         }
 753 }
 754
 755 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 756 {
 757         ushort *fb = *fbp;
 758         int cnt_8copy = cnt >> 3;
 759
 760         cnt -= cnt_8copy << 3;
 761         while (cnt_8copy > 0) {
 762                 *fb++ = c;
 763                 *fb++ = c;
 764                 *fb++ = c;
 765                 *fb++ = c;
 766                 *fb++ = c;
 767                 *fb++ = c;
 768                 *fb++ = c;
 769                 *fb++ = c;
 770                 cnt_8copy--;
 771         }
 772         while (cnt > 0) {
 773                 *fb++ = c;
 774                 cnt--;
 775         }
 776         *fbp = fb;
 777 }
 778
 779 /*
 780  * Do not call this function directly, must be called from lcd_display_bitmap.
 781  */
 782 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 783                                     int x_off, int y_off)
 784 {
 785         uchar *bmap;
 786         ulong width, height;
 787         ulong cnt, runlen;
 788         int x, y;
 789         int decode = 1;
 790
 791         width = le32_to_cpu(bmp->header.width);
 792         height = le32_to_cpu(bmp->header.height);
 793         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
 794
 795         x = 0;
 796         y = height - 1;
 797
 798         while (decode) {
 799                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 800                         switch (bmap[1]) {
 801                         case BMP_RLE8_EOL:
 802                                 /* end of line */
 803                                 bmap += 2;
 804                                 x = 0;
 805                                 y--;
 806                                 /* 16bpix, 2-byte per pixel, width should *2 */
 807                                 fb -= (width * 2 + lcd_line_length);
 808                                 break;
 809                         case BMP_RLE8_EOBMP:
 810                                 /* end of bitmap */
 811                                 decode = 0;
 812                                 break;
 813                         case BMP_RLE8_DELTA:
 814                                 /* delta run */
 815                                 x += bmap[2];
 816                                 y -= bmap[3];
 817                                 /* 16bpix, 2-byte per pixel, x should *2 */
 818                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 819                                         * lcd_line_length + (x + x_off) * 2);
 820                                 bmap += 4;
 821                                 break;
 822                         default:
 823                                 /* unencoded run */
 824                                 runlen = bmap[1];
 825                                 bmap += 2;
 826                                 if (y < height) {
 827                                         if (x < width) {
 828                                                 if (x + runlen > width)
 829                                                         cnt = width - x;
 830                                                 else
 831                                                         cnt = runlen;
 832                                                 draw_unencoded_bitmap(
 833                                                         (ushort **)&fb,
 834                                                         bmap, cmap, cnt);
 835                                         }
 836                                         x += runlen;
 837                                 }
 838                                 bmap += runlen;
 839                                 if (runlen & 1)
 840                                         bmap++;
 841                         }
 842                 } else {
 843                         /* encoded run */
 844                         if (y < height) {
 845                                 runlen = bmap[0];
 846                                 if (x < width) {
 847                                         /* aggregate the same code */
 848                                         while (bmap[0] == 0xff &&
 849                                                bmap[2] != BMP_RLE8_ESCAPE &&
 850                                                bmap[1] == bmap[3]) {
 851                                                 runlen += bmap[2];
 852                                                 bmap += 2;
 853                                         }
 854                                         if (x + runlen > width)
 855                                                 cnt = width - x;
 856                                         else
 857                                                 cnt = runlen;
 858                                         draw_encoded_bitmap((ushort **)&fb,
 859                                                 cmap[bmap[1]], cnt);
 860                                 }
 861                                 x += runlen;
 862                         }
 863                         bmap += 2;
 864                 }
 865         }
 866 }
 867 #endif
 868
 869 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
 870 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 871 #else
 872 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 873 #endif
 874
 875 #if defined(CONFIG_BMP_16BPP)
 876 #if defined(CONFIG_ATMEL_LCD_BGR555)
 877 static inline void fb_put_word(uchar **fb, uchar **from)
 878 {
 879         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 880         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 881         *from += 2;
 882 }
 883 #else
 884 static inline void fb_put_word(uchar **fb, uchar **from)
 885 {
 886         *(*fb)++ = *(*from)++;
 887         *(*fb)++ = *(*from)++;
 888 }
 889 #endif
 890 #endif /* CONFIG_BMP_16BPP */
 891
 892 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 893 {
 894 #if !defined(CONFIG_MCC200)
 895         ushort *cmap = NULL;
 896 #endif
 897         ushort *cmap_base = NULL;
 898         ushort i, j;
 899         uchar *fb;
 900         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
 901         uchar *bmap;
 902         ushort padded_width;
 903         unsigned long width, height, byte_width;
 904         unsigned long pwidth = panel_info.vl_col;
 905         unsigned colors, bpix, bmp_bpix;
 906
 907         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 908                 bmp->header.signature[1] == 'M')) {
 909                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 910
 911                 return 1;
 912         }
 913
 914         width = le32_to_cpu(bmp->header.width);
 915         height = le32_to_cpu(bmp->header.height);
 916         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
 917         colors = 1 << bmp_bpix;
 918
 919         bpix = NBITS(panel_info.vl_bpix);
 920
 921         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 922                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 923                         bpix, bmp_bpix);
 924
 925                 return 1;
 926         }
 927
 928         /* We support displaying 8bpp BMPs on 16bpp LCDs */
 929         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
 930                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 931                         bpix,
 932                         le16_to_cpu(bmp->header.bit_count));
 933
 934                 return 1;
 935         }
 936
 937         debug("Display-bmp: %d x %d  with %d colors\n",
 938                 (int)width, (int)height, (int)colors);
 939
 940 #if !defined(CONFIG_MCC200)
 941         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
 942         if (bmp_bpix == 8) {
 943                 cmap = configuration_get_cmap();
 944                 cmap_base = cmap;
 945
 946                 /* Set color map */
 947                 for (i = 0; i < colors; ++i) {
 948                         bmp_color_table_entry_t cte = bmp->color_table[i];
 949 #if !defined(CONFIG_ATMEL_LCD)
 950                         ushort colreg =
 951                                 ( ((cte.red)   << 8) & 0xf800) |
 952                                 ( ((cte.green) << 3) & 0x07e0) |
 953                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 954 #ifdef CONFIG_SYS_INVERT_COLORS
 955                         *cmap = 0xffff - colreg;
 956 #else
 957                         *cmap = colreg;
 958 #endif
 959 #if defined(CONFIG_MPC823)
 960                         cmap--;
 961 #else
 962                         cmap++;
 963 #endif
 964 #else /* CONFIG_ATMEL_LCD */
 965                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 966 #endif
 967                 }
 968         }
 969 #endif
 970
 971         /*
 972          *  BMP format for Monochrome assumes that the state of a
 973          * pixel is described on a per Bit basis, not per Byte.
 974          *  So, in case of Monochrome BMP we should align widths
 975          * on a byte boundary and convert them from Bit to Byte
 976          * units.
 977          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
 978          * their own ways, so make the converting to be MCC200
 979          * specific.
 980          */
 981 #if defined(CONFIG_MCC200)
 982         if (bpix == 1) {
 983                 width = ((width + 7) & ~7) >> 3;
 984                 x     = ((x + 7) & ~7) >> 3;
 985                 pwidth= ((pwidth + 7) & ~7) >> 3;
 986         }
 987 #endif
 988
 989         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 990
 991 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 992         splash_align_axis(&x, pwidth, width);
 993         splash_align_axis(&y, panel_info.vl_row, height);
 994 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 995
 996         if ((x + width) > pwidth)
 997                 width = pwidth - x;
 998         if ((y + height) > panel_info.vl_row)
 999                 height = panel_info.vl_row - y;
1000
1001         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
1002         fb   = (uchar *) (lcd_base +
1003                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1004
1005         switch (bmp_bpix) {
1006         case 1: /* pass through */
1007         case 8:
1008 #ifdef CONFIG_LCD_BMP_RLE8
1009                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
1010                         if (bpix != 16) {
1011                                 /* TODO implement render code for bpix != 16 */
1012                                 printf("Error: only support 16 bpix");
1013                                 return 1;
1014                         }
1015                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1016                         break;
1017                 }
1018 #endif
1019
1020                 if (bpix != 16)
1021                         byte_width = width;
1022                 else
1023                         byte_width = width * 2;
1024
1025                 for (i = 0; i < height; ++i) {
1026                         WATCHDOG_RESET();
1027                         for (j = 0; j < width; j++) {
1028                                 if (bpix != 16) {
1029                                         FB_PUT_BYTE(fb, bmap);
1030                                 } else {
1031                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1032                                         fb += sizeof(uint16_t) / sizeof(*fb);
1033                                 }
1034                         }
1035                         bmap += (padded_width - width);
1036                         fb -= byte_width + lcd_line_length;
1037                 }
1038                 break;
1039
1040 #if defined(CONFIG_BMP_16BPP)
1041         case 16:
1042                 for (i = 0; i < height; ++i) {
1043                         WATCHDOG_RESET();
1044                         for (j = 0; j < width; j++)
1045                                 fb_put_word(&fb, &bmap);
1046
1047                         bmap += (padded_width - width) * 2;
1048                         fb -= width * 2 + lcd_line_length;
1049                 }
1050                 break;
1051 #endif /* CONFIG_BMP_16BPP */
1052
1053 #if defined(CONFIG_BMP_32BPP)
1054         case 32:
1055                 for (i = 0; i < height; ++i) {
1056                         for (j = 0; j < width; j++) {
1057                                 *(fb++) = *(bmap++);
1058                                 *(fb++) = *(bmap++);
1059                                 *(fb++) = *(bmap++);
1060                                 *(fb++) = *(bmap++);
1061                         }
1062                         fb -= lcd_line_length + width * (bpix / 8);
1063                 }
1064                 break;
1065 #endif /* CONFIG_BMP_32BPP */
1066         default:
1067                 break;
1068         };
1069
1070         lcd_sync();
1071         return 0;
1072 }
1073 #endif
1074
1075 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1076 static inline int splash_screen_prepare(void)
1077 {
1078         return board_splash_screen_prepare();
1079 }
1080 #else
1081 static inline int splash_screen_prepare(void)
1082 {
1083         return 0;
1084 }
1085 #endif
1086
1087 static void *lcd_logo(void)
1088 {
1089 #ifdef CONFIG_SPLASH_SCREEN
1090         char *s;
1091         ulong addr;
1092         static int do_splash = 1;
1093
1094         if (do_splash && (s = getenv("splashimage")) != NULL) {
1095                 int x = 0, y = 0;
1096                 do_splash = 0;
1097
1098                 if (splash_screen_prepare())
1099                         return (void *)gd->fb_base;
1100
1101                 addr = simple_strtoul (s, NULL, 16);
1102 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1103                 s = getenv("splashpos");
1104                 if (s != NULL) {
1105                         if (s[0] == 'm')
1106                                 x = BMP_ALIGN_CENTER;
1107                         else
1108                                 x = simple_strtol(s, NULL, 0);
1109
1110                         s = strchr(s + 1, ',');
1111                         if (s != NULL) {
1112                                 if (s[1] == 'm')
1113                                         y = BMP_ALIGN_CENTER;
1114                                 else
1115                                         y = simple_strtol (s + 1, NULL, 0);
1116                         }
1117                 }
1118 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1119
1120                 if (bmp_display(addr, x, y) == 0)
1121                         return (void *)lcd_base;
1122         }
1123 #endif /* CONFIG_SPLASH_SCREEN */
1124
1125         bitmap_plot(0, 0);
1126
1127 #ifdef CONFIG_LCD_INFO
1128         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1129         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1130         lcd_show_board_info();
1131 #endif /* CONFIG_LCD_INFO */
1132
1133 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1134         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1135 #else
1136         return (void *)lcd_base;
1137 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1138 }
1139
1140 #ifdef CONFIG_SPLASHIMAGE_GUARD
1141 static int on_splashimage(const char *name, const char *value, enum env_op op,
1142         int flags)
1143 {
1144         ulong addr;
1145         int aligned;
1146
1147         if (op == env_op_delete)
1148                 return 0;
1149
1150         addr = simple_strtoul(value, NULL, 16);
1151         /* See README.displaying-bmps */
1152         aligned = (addr % 4 == 2);
1153         if (!aligned) {
1154                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1155                 return -1;
1156         }
1157
1158         return 0;
1159 }
1160
1161 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1162 #endif
1163
1164 void lcd_position_cursor(unsigned col, unsigned row)
1165 {
1166         console_col = min(col, CONSOLE_COLS - 1);
1167         console_row = min(row, CONSOLE_ROWS - 1);
1168 }
1169
1170 int lcd_get_pixel_width(void)
1171 {
1172         return panel_info.vl_col;
1173 }
1174
1175 int lcd_get_pixel_height(void)
1176 {
1177         return panel_info.vl_row;
1178 }
1179
1180 int lcd_get_screen_rows(void)
1181 {
1182         return CONSOLE_ROWS;
1183 }
1184
1185 int lcd_get_screen_columns(void)
1186 {
1187         return CONSOLE_COLS;
1188 }
1189
1190 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1191 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1192 {
1193         u32 stride;
1194         fdt32_t cells[2];
1195         int ret;
1196         const char format[] =
1197 #if LCD_BPP == LCD_COLOR16
1198                 "r5g6b5";
1199 #else
1200                 "";
1201 #endif
1202
1203         if (!format[0])
1204                 return -1;
1205
1206         stride = panel_info.vl_col * 2;
1207
1208         cells[0] = cpu_to_fdt32(gd->fb_base);
1209         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1210         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1211         if (ret < 0)
1212                 return -1;
1213
1214         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1215         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1216         if (ret < 0)
1217                 return -1;
1218
1219         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1220         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1221         if (ret < 0)
1222                 return -1;
1223
1224         cells[0] = cpu_to_fdt32(stride);
1225         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1226         if (ret < 0)
1227                 return -1;
1228
1229         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1230         if (ret < 0)
1231                 return -1;
1232
1233         ret = fdt_delprop(blob, off, "status");
1234         if (ret < 0)
1235                 return -1;
1236
1237         return 0;
1238 }
1239
1240 int lcd_dt_simplefb_add_node(void *blob)
1241 {
1242         const char compat[] = "simple-framebuffer";
1243         const char disabled[] = "disabled";
1244         int off, ret;
1245
1246         off = fdt_add_subnode(blob, 0, "framebuffer");
1247         if (off < 0)
1248                 return -1;
1249
1250         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1251         if (ret < 0)
1252                 return -1;
1253
1254         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1255         if (ret < 0)
1256                 return -1;
1257
1258         return lcd_dt_simplefb_configure_node(blob, off);
1259 }
1260
1261 int lcd_dt_simplefb_enable_existing_node(void *blob)
1262 {
1263         int off;
1264
1265         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1266         if (off < 0)
1267                 return -1;
1268
1269         return lcd_dt_simplefb_configure_node(blob, off);
1270 }
1271 #endif