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  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 /************************************************************************/
  11 /* ** HEADER FILES                                                      */
  12 /************************************************************************/
  13
  14 /* #define DEBUG */
  15
  16 #include <config.h>
  17 #include <common.h>
  18 #include <command.h>
  19 #include <stdarg.h>
  20 #include <search.h>
  21 #include <env_callback.h>
  22 #include <linux/types.h>
  23 #include <stdio_dev.h>
  24 #if defined(CONFIG_POST)
  25 #include <post.h>
  26 #endif
  27 #include <lcd.h>
  28 #include <watchdog.h>
  29 #include <asm/unaligned.h>
  30 #include <splash.h>
  31 #include <asm/io.h>
  32 #include <asm/unaligned.h>
  33 #include <fdt_support.h>
  34
  35 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  36         defined(CONFIG_CPU_MONAHANS)
  37 #include <asm/byteorder.h>
  38 #endif
  39
  40 #if defined(CONFIG_MPC823)
  41 #include <lcdvideo.h>
  42 #endif
  43
  44 #if defined(CONFIG_ATMEL_LCD)
  45 #include <atmel_lcdc.h>
  46 #endif
  47
  48 #if defined(CONFIG_LCD_DT_SIMPLEFB)
  49 #include <libfdt.h>
  50 #endif
  51
  52 /************************************************************************/
  53 /* ** FONT DATA                                                         */
  54 /************************************************************************/
  55 #include <video_font.h>         /* Get font data, width and height      */
  56
  57 /************************************************************************/
  58 /* ** LOGO DATA                                                         */
  59 /************************************************************************/
  60 #ifdef CONFIG_LCD_LOGO
  61 # include <bmp_logo.h>          /* Get logo data, width and height      */
  62 # include <bmp_logo_data.h>
  63 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  64 #  error Default Color Map overlaps with Logo Color Map
  65 # endif
  66 #endif
  67
  68 #ifdef CONFIG_SANDBOX
  69 #include <asm/sdl.h>
  70 #endif
  71
  72 #ifndef CONFIG_LCD_ALIGNMENT
  73 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  74 #endif
  75
  76 /* By default we scroll by a single line */
  77 #ifndef CONFIG_CONSOLE_SCROLL_LINES
  78 #define CONFIG_CONSOLE_SCROLL_LINES 1
  79 #endif
  80
  81 /************************************************************************/
  82 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
  83 /************************************************************************/
  84 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  85 #define CONSOLE_ROW_FIRST       lcd_console_address
  86 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  87 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  88                                         - CONSOLE_ROW_SIZE)
  89 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * console_rows)
  90 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  91
  92 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
  93         (LCD_BPP != LCD_COLOR32)
  94 # error Unsupported LCD BPP.
  95 #endif
  96
  97 DECLARE_GLOBAL_DATA_PTR;
  98
  99 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 100 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 101
 102 static int lcd_init(void *lcdbase);
 103
 104 static void *lcd_logo(void);
 105
 106 static void lcd_setfgcolor(int color);
 107 static void lcd_setbgcolor(int color);
 108
 109 static int lcd_color_fg;
 110 static int lcd_color_bg;
 111 int lcd_line_length;
 112
 113 char lcd_is_enabled = 0;
 114
 115 static short console_curr_col;
 116 static short console_curr_row;
 117 static short console_cols;
 118 static short console_rows;
 119
 120 static void *lcd_console_address;
 121 static void *lcd_base;                  /* Start of framebuffer memory  */
 122
 123 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 124
 125 /************************************************************************/
 126
 127 /* Flush LCD activity to the caches */
 128 void lcd_sync(void)
 129 {
 130         /*
 131          * flush_dcache_range() is declared in common.h but it seems that some
 132          * architectures do not actually implement it. Is there a way to find
 133          * out whether it exists? For now, ARM is safe.
 134          */
 135 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 136         int line_length;
 137
 138         if (lcd_flush_dcache)
 139                 flush_dcache_range((u32)lcd_base,
 140                         (u32)(lcd_base + lcd_get_size(&line_length)));
 141 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 142         static ulong last_sync;
 143
 144         if (get_timer(last_sync) > 10) {
 145                 sandbox_sdl_sync(lcd_base);
 146                 last_sync = get_timer(0);
 147         }
 148 #endif
 149 }
 150
 151 void lcd_set_flush_dcache(int flush)
 152 {
 153         lcd_flush_dcache = (flush != 0);
 154 }
 155
 156 void lcd_init_console(void *address, int rows, int cols)
 157 {
 158         console_curr_col = 0;
 159         console_curr_row = 0;
 160         console_cols = cols;
 161         console_rows = rows;
 162         lcd_console_address = address;
 163 }
 164
 165 void lcd_set_col(short col)
 166 {
 167         console_curr_col = col;
 168 }
 169
 170 void lcd_set_row(short row)
 171 {
 172         console_curr_row = row;
 173 }
 174
 175 /*----------------------------------------------------------------------*/
 176
 177 static void console_scrollup(void)
 178 {
 179         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 180         int bg_color = lcd_getbgcolor();
 181
 182         /* Copy up rows ignoring those that will be overwritten */
 183         memcpy(CONSOLE_ROW_FIRST,
 184                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 185                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 186
 187         /* Clear the last rows */
 188 #if (LCD_BPP != LCD_COLOR32)
 189         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 190                bg_color, CONSOLE_ROW_SIZE * rows);
 191 #else
 192         u32 *ppix = lcd_console_address +
 193                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
 194         u32 i;
 195         for (i = 0;
 196             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
 197             i++) {
 198                 *ppix++ = bg_color;
 199         }
 200 #endif
 201         lcd_sync();
 202         console_curr_row -= rows;
 203 }
 204
 205 /*----------------------------------------------------------------------*/
 206
 207 static inline void console_back(void)
 208 {
 209         if (--console_curr_col < 0) {
 210                 console_curr_col = console_cols - 1;
 211                 if (--console_curr_row < 0)
 212                         console_curr_row = 0;
 213         }
 214
 215         lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH,
 216                     console_curr_row * VIDEO_FONT_HEIGHT, ' ');
 217 }
 218
 219 /*----------------------------------------------------------------------*/
 220
 221 static inline void console_newline(void)
 222 {
 223         console_curr_col = 0;
 224
 225         /* Check if we need to scroll the terminal */
 226         if (++console_curr_row >= console_rows)
 227                 console_scrollup();
 228         else
 229                 lcd_sync();
 230 }
 231
 232 /*----------------------------------------------------------------------*/
 233
 234 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 235 {
 236         lcd_putc(c);
 237 }
 238
 239 void lcd_putc(const char c)
 240 {
 241         if (!lcd_is_enabled) {
 242                 serial_putc(c);
 243
 244                 return;
 245         }
 246
 247         switch (c) {
 248         case '\r':
 249                 console_curr_col = 0;
 250
 251                 return;
 252         case '\n':
 253                 console_newline();
 254
 255                 return;
 256         case '\t':      /* Tab (8 chars alignment) */
 257                 console_curr_col +=  8;
 258                 console_curr_col &= ~7;
 259
 260                 if (console_curr_col >= console_cols)
 261                         console_newline();
 262
 263                 return;
 264         case '\b':
 265                 console_back();
 266
 267                 return;
 268         default:
 269                 lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH,
 270                             console_curr_row * VIDEO_FONT_HEIGHT, c);
 271                 if (++console_curr_col >= console_cols)
 272                         console_newline();
 273         }
 274 }
 275
 276 /*----------------------------------------------------------------------*/
 277
 278 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 279 {
 280         lcd_puts(s);
 281 }
 282
 283 void lcd_puts(const char *s)
 284 {
 285         if (!lcd_is_enabled) {
 286                 serial_puts(s);
 287
 288                 return;
 289         }
 290
 291         while (*s)
 292                 lcd_putc(*s++);
 293
 294         lcd_sync();
 295 }
 296
 297 /*----------------------------------------------------------------------*/
 298
 299 void lcd_printf(const char *fmt, ...)
 300 {
 301         va_list args;
 302         char buf[CONFIG_SYS_PBSIZE];
 303
 304         va_start(args, fmt);
 305         vsprintf(buf, fmt, args);
 306         va_end(args);
 307
 308         lcd_puts(buf);
 309 }
 310
 311 /************************************************************************/
 312 /* ** Low-Level Graphics Routines                                       */
 313 /************************************************************************/
 314
 315 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 316 {
 317         uchar *dest;
 318         ushort row;
 319         int fg_color, bg_color;
 320
 321         dest = (uchar *)(lcd_console_address +
 322                         y * lcd_line_length + x * NBITS(LCD_BPP) / 8);
 323
 324         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 325                 uchar *s = str;
 326                 int i;
 327 #if LCD_BPP == LCD_COLOR16
 328                 ushort *d = (ushort *)dest;
 329 #elif LCD_BPP == LCD_COLOR32
 330                 u32 *d = (u32 *)dest;
 331 #else
 332                 uchar *d = dest;
 333 #endif
 334
 335                 fg_color = lcd_getfgcolor();
 336                 bg_color = lcd_getbgcolor();
 337                 for (i = 0; i < count; ++i) {
 338                         uchar c, bits;
 339
 340                         c = *s++;
 341                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 342
 343                         for (c = 0; c < 8; ++c) {
 344                                 *d++ = (bits & 0x80) ? fg_color : bg_color;
 345                                 bits <<= 1;
 346                         }
 347                 }
 348         }
 349 }
 350
 351 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 352 {
 353         lcd_drawchars(x, y, &c, 1);
 354 }
 355
 356 /************************************************************************/
 357 /**  Small utility to check that you got the colours right              */
 358 /************************************************************************/
 359 #ifdef LCD_TEST_PATTERN
 360
 361 #define N_BLK_VERT      2
 362 #define N_BLK_HOR       3
 363
 364 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 365         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 366         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 367 };
 368
 369 static void test_pattern(void)
 370 {
 371         ushort v_max  = panel_info.vl_row;
 372         ushort h_max  = panel_info.vl_col;
 373         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 374         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 375         ushort v, h;
 376         uchar *pix = (uchar *)lcd_base;
 377
 378         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 379                 h_max, v_max, h_step, v_step);
 380
 381         /* WARNING: Code silently assumes 8bit/pixel */
 382         for (v = 0; v < v_max; ++v) {
 383                 uchar iy = v / v_step;
 384                 for (h = 0; h < h_max; ++h) {
 385                         uchar ix = N_BLK_HOR * iy + h / h_step;
 386                         *pix++ = test_colors[ix];
 387                 }
 388         }
 389 }
 390 #endif /* LCD_TEST_PATTERN */
 391
 392
 393 /************************************************************************/
 394 /* ** GENERIC Initialization Routines                                   */
 395 /************************************************************************/
 396 /*
 397  * With most lcd drivers the line length is set up
 398  * by calculating it from panel_info parameters. Some
 399  * drivers need to calculate the line length differently,
 400  * so make the function weak to allow overriding it.
 401  */
 402 __weak int lcd_get_size(int *line_length)
 403 {
 404         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 405         return *line_length * panel_info.vl_row;
 406 }
 407
 408 int drv_lcd_init(void)
 409 {
 410         struct stdio_dev lcddev;
 411         int rc;
 412
 413         lcd_base = map_sysmem(gd->fb_base, 0);
 414
 415         lcd_init(lcd_base);             /* LCD initialization */
 416
 417         /* Device initialization */
 418         memset(&lcddev, 0, sizeof(lcddev));
 419
 420         strcpy(lcddev.name, "lcd");
 421         lcddev.ext   = 0;                       /* No extensions */
 422         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 423         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 424         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 425
 426         rc = stdio_register(&lcddev);
 427
 428         return (rc == 0) ? 1 : rc;
 429 }
 430
 431 /*----------------------------------------------------------------------*/
 432 void lcd_clear(void)
 433 {
 434         short console_rows, console_cols;
 435         int bg_color;
 436 #if LCD_BPP == LCD_COLOR8
 437         /* Setting the palette */
 438         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 439         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 440         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 441         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 442         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 443         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 444         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 445         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 446         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 447 #endif
 448
 449 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 450         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 451         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 452         bg_color = CONSOLE_COLOR_WHITE;
 453 #else
 454         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 455         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 456         bg_color = CONSOLE_COLOR_BLACK;
 457 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 458
 459 #ifdef  LCD_TEST_PATTERN
 460         test_pattern();
 461 #else
 462         /* set framebuffer to background color */
 463 #if (LCD_BPP != LCD_COLOR32)
 464         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
 465 #else
 466         u32 *ppix = lcd_base;
 467         u32 i;
 468         for (i = 0;
 469            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 470            i++) {
 471                 *ppix++ = bg_color;
 472         }
 473 #endif
 474 #endif
 475         /* Paint the logo and retrieve LCD base address */
 476         debug("[LCD] Drawing the logo...\n");
 477 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 478         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
 479         console_rows /= VIDEO_FONT_HEIGHT;
 480 #else
 481         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
 482 #endif
 483         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
 484         lcd_init_console(lcd_logo(), console_rows, console_cols);
 485         lcd_sync();
 486 }
 487
 488 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 489                         char *const argv[])
 490 {
 491         lcd_clear();
 492         return 0;
 493 }
 494
 495 U_BOOT_CMD(
 496         cls,    1,      1,      do_lcd_clear,
 497         "clear screen",
 498         ""
 499 );
 500
 501 /*----------------------------------------------------------------------*/
 502
 503 static int lcd_init(void *lcdbase)
 504 {
 505         /* Initialize the lcd controller */
 506         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 507
 508         lcd_ctrl_init(lcdbase);
 509
 510         /*
 511          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 512          * the 'lcdbase' argument and uses custom lcd base address
 513          * by setting up gd->fb_base. Check for this condition and fixup
 514          * 'lcd_base' address.
 515          */
 516         if (map_to_sysmem(lcdbase) != gd->fb_base)
 517                 lcd_base = map_sysmem(gd->fb_base, 0);
 518
 519         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 520
 521         lcd_get_size(&lcd_line_length);
 522         lcd_is_enabled = 1;
 523         lcd_clear();
 524         lcd_enable();
 525
 526         /* Initialize the console */
 527         lcd_set_col(0);
 528 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 529         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
 530 #else
 531         lcd_set_row(1); /* leave 1 blank line below logo */
 532 #endif
 533
 534         return 0;
 535 }
 536
 537
 538 /************************************************************************/
 539 /* ** ROM capable initialization part - needed to reserve FB memory     */
 540 /************************************************************************/
 541 /*
 542  * This is called early in the system initialization to grab memory
 543  * for the LCD controller.
 544  * Returns new address for monitor, after reserving LCD buffer memory
 545  *
 546  * Note that this is running from ROM, so no write access to global data.
 547  */
 548 ulong lcd_setmem(ulong addr)
 549 {
 550         ulong size;
 551         int line_length;
 552
 553         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 554                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 555
 556         size = lcd_get_size(&line_length);
 557
 558         /* Round up to nearest full page, or MMU section if defined */
 559         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 560         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 561
 562         /* Allocate pages for the frame buffer. */
 563         addr -= size;
 564
 565         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 566               size >> 10, addr);
 567
 568         return addr;
 569 }
 570
 571 /*----------------------------------------------------------------------*/
 572
 573 static void lcd_setfgcolor(int color)
 574 {
 575         lcd_color_fg = color;
 576 }
 577
 578 int lcd_getfgcolor(void)
 579 {
 580         return lcd_color_fg;
 581 }
 582
 583 /*----------------------------------------------------------------------*/
 584
 585 static void lcd_setbgcolor(int color)
 586 {
 587         lcd_color_bg = color;
 588 }
 589
 590 int lcd_getbgcolor(void)
 591 {
 592         return lcd_color_bg;
 593 }
 594
 595 /************************************************************************/
 596 /* ** Chipset depending Bitmap / Logo stuff...                          */
 597 /************************************************************************/
 598 static inline ushort *configuration_get_cmap(void)
 599 {
 600 #if defined CONFIG_CPU_PXA
 601         struct pxafb_info *fbi = &panel_info.pxa;
 602         return (ushort *)fbi->palette;
 603 #elif defined(CONFIG_MPC823)
 604         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 605         cpm8xx_t *cp = &(immr->im_cpm);
 606         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 607 #elif defined(CONFIG_ATMEL_LCD)
 608         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 609 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 610         return panel_info.cmap;
 611 #elif defined(CONFIG_LCD_LOGO)
 612         return bmp_logo_palette;
 613 #else
 614         return NULL;
 615 #endif
 616 }
 617
 618 #ifdef CONFIG_LCD_LOGO
 619 void bitmap_plot(int x, int y)
 620 {
 621 #ifdef CONFIG_ATMEL_LCD
 622         uint *cmap = (uint *)bmp_logo_palette;
 623 #else
 624         ushort *cmap = (ushort *)bmp_logo_palette;
 625 #endif
 626         ushort i, j;
 627         uchar *bmap;
 628         uchar *fb;
 629         ushort *fb16;
 630 #if defined(CONFIG_MPC823)
 631         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 632         cpm8xx_t *cp = &(immr->im_cpm);
 633 #endif
 634         unsigned bpix = NBITS(panel_info.vl_bpix);
 635
 636         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 637                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 638                 ARRAY_SIZE(bmp_logo_palette));
 639
 640         bmap = &bmp_logo_bitmap[0];
 641         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 642
 643         if (bpix < 12) {
 644                 /* Leave room for default color map
 645                  * default case: generic system with no cmap (most likely 16bpp)
 646                  * cmap was set to the source palette, so no change is done.
 647                  * This avoids even more ifdefs in the next stanza
 648                  */
 649 #if defined(CONFIG_MPC823)
 650                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 651 #elif defined(CONFIG_ATMEL_LCD)
 652                 cmap = (uint *)configuration_get_cmap();
 653 #else
 654                 cmap = configuration_get_cmap();
 655 #endif
 656
 657                 WATCHDOG_RESET();
 658
 659                 /* Set color map */
 660                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 661                         ushort colreg = bmp_logo_palette[i];
 662 #ifdef CONFIG_ATMEL_LCD
 663                         uint lut_entry;
 664 #ifdef CONFIG_ATMEL_LCD_BGR555
 665                         lut_entry = ((colreg & 0x000F) << 11) |
 666                                         ((colreg & 0x00F0) <<  2) |
 667                                         ((colreg & 0x0F00) >>  7);
 668 #else /* CONFIG_ATMEL_LCD_RGB565 */
 669                         lut_entry = ((colreg & 0x000F) << 1) |
 670                                         ((colreg & 0x00F0) << 3) |
 671                                         ((colreg & 0x0F00) << 4);
 672 #endif
 673                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 674                         cmap++;
 675 #else /* !CONFIG_ATMEL_LCD */
 676                         *cmap++ = colreg;
 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, (int)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 = get_unaligned_le32(&bmp->header.width);
 792         height = get_unaligned_le32(&bmp->header.height);
 793         bmap = (uchar *)bmp + get_unaligned_le32(&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)
 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         ushort *cmap = NULL;
 895         ushort *cmap_base = NULL;
 896         ushort i, j;
 897         uchar *fb;
 898         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 899         uchar *bmap;
 900         ushort padded_width;
 901         unsigned long width, height, byte_width;
 902         unsigned long pwidth = panel_info.vl_col;
 903         unsigned colors, bpix, bmp_bpix;
 904
 905         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 906                 bmp->header.signature[1] == 'M')) {
 907                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 908
 909                 return 1;
 910         }
 911
 912         width = get_unaligned_le32(&bmp->header.width);
 913         height = get_unaligned_le32(&bmp->header.height);
 914         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 915
 916         colors = 1 << bmp_bpix;
 917
 918         bpix = NBITS(panel_info.vl_bpix);
 919
 920         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 921                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 922                         bpix, bmp_bpix);
 923
 924                 return 1;
 925         }
 926
 927         /*
 928          * We support displaying 8bpp BMPs on 16bpp LCDs
 929          * and displaying 24bpp BMPs on 32bpp LCDs
 930          * */
 931         if (bpix != bmp_bpix &&
 932             !(bmp_bpix == 8 && bpix == 16) &&
 933             !(bmp_bpix == 24 && bpix == 32)) {
 934                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 935                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 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 (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                         *cmap = colreg;
 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
 966         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 967
 968 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 969         splash_align_axis(&x, pwidth, width);
 970         splash_align_axis(&y, panel_info.vl_row, height);
 971 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 972
 973         if ((x + width) > pwidth)
 974                 width = pwidth - x;
 975         if ((y + height) > panel_info.vl_row)
 976                 height = panel_info.vl_row - y;
 977
 978         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 979         fb   = (uchar *)(lcd_base +
 980                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 981
 982         switch (bmp_bpix) {
 983         case 1: /* pass through */
 984         case 8: {
 985 #ifdef CONFIG_LCD_BMP_RLE8
 986                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 987                 if (compression == BMP_BI_RLE8) {
 988                         if (bpix != 16) {
 989                                 /* TODO implement render code for bpix != 16 */
 990                                 printf("Error: only support 16 bpix");
 991                                 return 1;
 992                         }
 993                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
 994                         break;
 995                 }
 996 #endif
 997
 998                 if (bpix != 16)
 999                         byte_width = width;
1000                 else
1001                         byte_width = width * 2;
1002
1003                 for (i = 0; i < height; ++i) {
1004                         WATCHDOG_RESET();
1005                         for (j = 0; j < width; j++) {
1006                                 if (bpix != 16) {
1007                                         FB_PUT_BYTE(fb, bmap);
1008                                 } else {
1009                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1010                                         fb += sizeof(uint16_t) / sizeof(*fb);
1011                                 }
1012                         }
1013                         bmap += (padded_width - width);
1014                         fb -= byte_width + lcd_line_length;
1015                 }
1016                 break;
1017         }
1018 #if defined(CONFIG_BMP_16BPP)
1019         case 16:
1020                 for (i = 0; i < height; ++i) {
1021                         WATCHDOG_RESET();
1022                         for (j = 0; j < width; j++)
1023                                 fb_put_word(&fb, &bmap);
1024
1025                         bmap += (padded_width - width) * 2;
1026                         fb -= width * 2 + lcd_line_length;
1027                 }
1028                 break;
1029 #endif /* CONFIG_BMP_16BPP */
1030 #if defined(CONFIG_BMP_24BMP)
1031         case 24:
1032                 for (i = 0; i < height; ++i) {
1033                         for (j = 0; j < width; j++) {
1034                                 *(fb++) = *(bmap++);
1035                                 *(fb++) = *(bmap++);
1036                                 *(fb++) = *(bmap++);
1037                                 *(fb++) = 0;
1038                         }
1039                         fb -= lcd_line_length + width * (bpix / 8);
1040                 }
1041                 break;
1042 #endif /* CONFIG_BMP_24BMP */
1043 #if defined(CONFIG_BMP_32BPP)
1044         case 32:
1045                 for (i = 0; i < height; ++i) {
1046                         for (j = 0; j < width; j++) {
1047                                 *(fb++) = *(bmap++);
1048                                 *(fb++) = *(bmap++);
1049                                 *(fb++) = *(bmap++);
1050                                 *(fb++) = *(bmap++);
1051                         }
1052                         fb -= lcd_line_length + width * (bpix / 8);
1053                 }
1054                 break;
1055 #endif /* CONFIG_BMP_32BPP */
1056         default:
1057                 break;
1058         };
1059
1060         lcd_sync();
1061         return 0;
1062 }
1063 #endif
1064
1065 static void *lcd_logo(void)
1066 {
1067 #ifdef CONFIG_SPLASH_SCREEN
1068         char *s;
1069         ulong addr;
1070         static int do_splash = 1;
1071
1072         if (do_splash && (s = getenv("splashimage")) != NULL) {
1073                 int x = 0, y = 0;
1074                 do_splash = 0;
1075
1076                 if (splash_screen_prepare())
1077                         return (void *)lcd_base;
1078
1079                 addr = simple_strtoul (s, NULL, 16);
1080
1081                 splash_get_pos(&x, &y);
1082
1083                 if (bmp_display(addr, x, y) == 0)
1084                         return (void *)lcd_base;
1085         }
1086 #endif /* CONFIG_SPLASH_SCREEN */
1087
1088         bitmap_plot(0, 0);
1089
1090 #ifdef CONFIG_LCD_INFO
1091         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
1092         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
1093         lcd_show_board_info();
1094 #endif /* CONFIG_LCD_INFO */
1095
1096 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1097         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1098 #else
1099         return (void *)lcd_base;
1100 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1101 }
1102
1103 #ifdef CONFIG_SPLASHIMAGE_GUARD
1104 static int on_splashimage(const char *name, const char *value, enum env_op op,
1105         int flags)
1106 {
1107         ulong addr;
1108         int aligned;
1109
1110         if (op == env_op_delete)
1111                 return 0;
1112
1113         addr = simple_strtoul(value, NULL, 16);
1114         /* See README.displaying-bmps */
1115         aligned = (addr % 4 == 2);
1116         if (!aligned) {
1117                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1118                 return -1;
1119         }
1120
1121         return 0;
1122 }
1123
1124 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1125 #endif
1126
1127 void lcd_position_cursor(unsigned col, unsigned row)
1128 {
1129         console_curr_col = min_t(short, col, console_cols - 1);
1130         console_curr_row = min_t(short, row, console_rows - 1);
1131 }
1132
1133 int lcd_get_pixel_width(void)
1134 {
1135         return panel_info.vl_col;
1136 }
1137
1138 int lcd_get_pixel_height(void)
1139 {
1140         return panel_info.vl_row;
1141 }
1142
1143 int lcd_get_screen_rows(void)
1144 {
1145         return console_rows;
1146 }
1147
1148 int lcd_get_screen_columns(void)
1149 {
1150         return console_cols;
1151 }
1152
1153 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1154 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1155 {
1156 #if LCD_BPP == LCD_COLOR16
1157         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1158                                        panel_info.vl_col, panel_info.vl_row,
1159                                        panel_info.vl_col * 2, "r5g6b5");
1160 #else
1161         return -1;
1162 #endif
1163 }
1164
1165 int lcd_dt_simplefb_add_node(void *blob)
1166 {
1167         static const char compat[] = "simple-framebuffer";
1168         static const char disabled[] = "disabled";
1169         int off, ret;
1170
1171         off = fdt_add_subnode(blob, 0, "framebuffer");
1172         if (off < 0)
1173                 return -1;
1174
1175         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1176         if (ret < 0)
1177                 return -1;
1178
1179         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1180         if (ret < 0)
1181                 return -1;
1182
1183         return lcd_dt_simplefb_configure_node(blob, off);
1184 }
1185
1186 int lcd_dt_simplefb_enable_existing_node(void *blob)
1187 {
1188         int off;
1189
1190         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1191         if (off < 0)
1192                 return -1;
1193
1194         return lcd_dt_simplefb_configure_node(blob, off);
1195 }
1196 #endif