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 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  85 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
  86                                         / VIDEO_FONT_HEIGHT)
  87 #else
  88 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
  89 #endif
  90
  91 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
  92 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
  93 #define CONSOLE_ROW_FIRST       lcd_console_address
  94 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
  95 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
  96                                         - CONSOLE_ROW_SIZE)
  97 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
  98 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
  99
 100 #if LCD_BPP == LCD_MONOCHROME
 101 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 102                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 103 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16) || \
 104         (LCD_BPP == LCD_COLOR32)
 105 # define COLOR_MASK(c)          (c)
 106 #else
 107 # error Unsupported LCD BPP.
 108 #endif
 109
 110 DECLARE_GLOBAL_DATA_PTR;
 111
 112 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
 113 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
 114
 115 static int lcd_init(void *lcdbase);
 116
 117 static void *lcd_logo(void);
 118
 119 static void lcd_setfgcolor(int color);
 120 static void lcd_setbgcolor(int color);
 121
 122 static int lcd_color_fg;
 123 static int lcd_color_bg;
 124 int lcd_line_length;
 125
 126 char lcd_is_enabled = 0;
 127
 128 static short console_col;
 129 static short console_row;
 130
 131 static void *lcd_console_address;
 132 static void *lcd_base;                  /* Start of framebuffer memory  */
 133
 134 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
 135
 136 /************************************************************************/
 137
 138 /* Flush LCD activity to the caches */
 139 void lcd_sync(void)
 140 {
 141         /*
 142          * flush_dcache_range() is declared in common.h but it seems that some
 143          * architectures do not actually implement it. Is there a way to find
 144          * out whether it exists? For now, ARM is safe.
 145          */
 146 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
 147         int line_length;
 148
 149         if (lcd_flush_dcache)
 150                 flush_dcache_range((u32)lcd_base,
 151                         (u32)(lcd_base + lcd_get_size(&line_length)));
 152 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
 153         static ulong last_sync;
 154
 155         if (get_timer(last_sync) > 10) {
 156                 sandbox_sdl_sync(lcd_base);
 157                 last_sync = get_timer(0);
 158         }
 159 #endif
 160 }
 161
 162 void lcd_set_flush_dcache(int flush)
 163 {
 164         lcd_flush_dcache = (flush != 0);
 165 }
 166
 167 /*----------------------------------------------------------------------*/
 168
 169 static void console_scrollup(void)
 170 {
 171         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 172
 173         /* Copy up rows ignoring those that will be overwritten */
 174         memcpy(CONSOLE_ROW_FIRST,
 175                lcd_console_address + CONSOLE_ROW_SIZE * rows,
 176                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
 177
 178         /* Clear the last rows */
 179 #if (LCD_BPP != LCD_COLOR32)
 180         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
 181                 COLOR_MASK(lcd_color_bg),
 182                 CONSOLE_ROW_SIZE * rows);
 183 #else
 184         u32 *ppix = lcd_console_address +
 185                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
 186         u32 i;
 187         for (i = 0;
 188             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
 189             i++) {
 190                 *ppix++ = COLOR_MASK(lcd_color_bg);
 191         }
 192 #endif
 193         lcd_sync();
 194         console_row -= rows;
 195 }
 196
 197 /*----------------------------------------------------------------------*/
 198
 199 static inline void console_back(void)
 200 {
 201         if (--console_col < 0) {
 202                 console_col = CONSOLE_COLS-1 ;
 203                 if (--console_row < 0)
 204                         console_row = 0;
 205         }
 206
 207         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 208                 console_row * VIDEO_FONT_HEIGHT, ' ');
 209 }
 210
 211 /*----------------------------------------------------------------------*/
 212
 213 static inline void console_newline(void)
 214 {
 215         console_col = 0;
 216
 217         /* Check if we need to scroll the terminal */
 218         if (++console_row >= CONSOLE_ROWS)
 219                 console_scrollup();
 220         else
 221                 lcd_sync();
 222 }
 223
 224 /*----------------------------------------------------------------------*/
 225
 226 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
 227 {
 228         lcd_putc(c);
 229 }
 230
 231 void lcd_putc(const char c)
 232 {
 233         if (!lcd_is_enabled) {
 234                 serial_putc(c);
 235
 236                 return;
 237         }
 238
 239         switch (c) {
 240         case '\r':
 241                 console_col = 0;
 242
 243                 return;
 244         case '\n':
 245                 console_newline();
 246
 247                 return;
 248         case '\t':      /* Tab (8 chars alignment) */
 249                 console_col +=  8;
 250                 console_col &= ~7;
 251
 252                 if (console_col >= CONSOLE_COLS)
 253                         console_newline();
 254
 255                 return;
 256         case '\b':
 257                 console_back();
 258
 259                 return;
 260         default:
 261                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
 262                         console_row * VIDEO_FONT_HEIGHT, c);
 263                 if (++console_col >= CONSOLE_COLS)
 264                         console_newline();
 265         }
 266 }
 267
 268 /*----------------------------------------------------------------------*/
 269
 270 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
 271 {
 272         lcd_puts(s);
 273 }
 274
 275 void lcd_puts(const char *s)
 276 {
 277         if (!lcd_is_enabled) {
 278                 serial_puts(s);
 279
 280                 return;
 281         }
 282
 283         while (*s)
 284                 lcd_putc(*s++);
 285
 286         lcd_sync();
 287 }
 288
 289 /*----------------------------------------------------------------------*/
 290
 291 void lcd_printf(const char *fmt, ...)
 292 {
 293         va_list args;
 294         char buf[CONFIG_SYS_PBSIZE];
 295
 296         va_start(args, fmt);
 297         vsprintf(buf, fmt, args);
 298         va_end(args);
 299
 300         lcd_puts(buf);
 301 }
 302
 303 /************************************************************************/
 304 /* ** Low-Level Graphics Routines                                       */
 305 /************************************************************************/
 306
 307 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
 308 {
 309         uchar *dest;
 310         ushort row;
 311
 312 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 313         y += BMP_LOGO_HEIGHT;
 314 #endif
 315
 316 #if LCD_BPP == LCD_MONOCHROME
 317         ushort off  = x * (1 << LCD_BPP) % 8;
 318 #endif
 319
 320         dest = (uchar *)(lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP)/8);
 321
 322         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
 323                 uchar *s = str;
 324                 int i;
 325 #if LCD_BPP == LCD_COLOR16
 326                 ushort *d = (ushort *)dest;
 327 #elif LCD_BPP == LCD_COLOR32
 328                 u32 *d = (u32 *)dest;
 329 #else
 330                 uchar *d = dest;
 331 #endif
 332
 333 #if LCD_BPP == LCD_MONOCHROME
 334                 uchar rest = *d & -(1 << (8 - off));
 335                 uchar sym;
 336 #endif
 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 #if LCD_BPP == LCD_MONOCHROME
 344                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 345                                 (COLOR_MASK(lcd_color_bg) & ~bits);
 346
 347                         *d++ = rest | (sym >> off);
 348                         rest = sym << (8-off);
 349 #elif LCD_BPP == LCD_COLOR8
 350                         for (c = 0; c < 8; ++c) {
 351                                 *d++ = (bits & 0x80) ?
 352                                                 lcd_color_fg : lcd_color_bg;
 353                                 bits <<= 1;
 354                         }
 355 #elif LCD_BPP == LCD_COLOR16
 356                         for (c = 0; c < 8; ++c) {
 357                                 *d++ = (bits & 0x80) ?
 358                                                 lcd_color_fg : lcd_color_bg;
 359                                 bits <<= 1;
 360                         }
 361 #elif LCD_BPP == LCD_COLOR32
 362                         for (c = 0; c < 8; ++c) {
 363                                 *d++ = (bits & 0x80) ?
 364                                                 lcd_color_fg : lcd_color_bg;
 365                                 bits <<= 1;
 366                         }
 367 #endif
 368                 }
 369 #if LCD_BPP == LCD_MONOCHROME
 370                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
 371 #endif
 372         }
 373 }
 374
 375 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
 376 {
 377         lcd_drawchars(x, y, &c, 1);
 378 }
 379
 380 /************************************************************************/
 381 /**  Small utility to check that you got the colours right              */
 382 /************************************************************************/
 383 #ifdef LCD_TEST_PATTERN
 384
 385 #define N_BLK_VERT      2
 386 #define N_BLK_HOR       3
 387
 388 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
 389         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 390         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 391 };
 392
 393 static void test_pattern(void)
 394 {
 395         ushort v_max  = panel_info.vl_row;
 396         ushort h_max  = panel_info.vl_col;
 397         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 398         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 399         ushort v, h;
 400         uchar *pix = (uchar *)lcd_base;
 401
 402         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 403                 h_max, v_max, h_step, v_step);
 404
 405         /* WARNING: Code silently assumes 8bit/pixel */
 406         for (v = 0; v < v_max; ++v) {
 407                 uchar iy = v / v_step;
 408                 for (h = 0; h < h_max; ++h) {
 409                         uchar ix = N_BLK_HOR * iy + h / h_step;
 410                         *pix++ = test_colors[ix];
 411                 }
 412         }
 413 }
 414 #endif /* LCD_TEST_PATTERN */
 415
 416
 417 /************************************************************************/
 418 /* ** GENERIC Initialization Routines                                   */
 419 /************************************************************************/
 420 /*
 421  * With most lcd drivers the line length is set up
 422  * by calculating it from panel_info parameters. Some
 423  * drivers need to calculate the line length differently,
 424  * so make the function weak to allow overriding it.
 425  */
 426 __weak int lcd_get_size(int *line_length)
 427 {
 428         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
 429         return *line_length * panel_info.vl_row;
 430 }
 431
 432 int drv_lcd_init(void)
 433 {
 434         struct stdio_dev lcddev;
 435         int rc;
 436
 437         lcd_base = map_sysmem(gd->fb_base, 0);
 438
 439         lcd_init(lcd_base);             /* LCD initialization */
 440
 441         /* Device initialization */
 442         memset(&lcddev, 0, sizeof(lcddev));
 443
 444         strcpy(lcddev.name, "lcd");
 445         lcddev.ext   = 0;                       /* No extensions */
 446         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 447         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
 448         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
 449
 450         rc = stdio_register(&lcddev);
 451
 452         return (rc == 0) ? 1 : rc;
 453 }
 454
 455 /*----------------------------------------------------------------------*/
 456 void lcd_clear(void)
 457 {
 458 #if LCD_BPP == LCD_MONOCHROME
 459         /* Setting the palette */
 460         lcd_initcolregs();
 461
 462 #elif LCD_BPP == LCD_COLOR8
 463         /* Setting the palette */
 464         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
 465         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
 466         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
 467         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
 468         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
 469         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
 470         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
 471         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
 472         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
 473 #endif
 474
 475 #ifndef CONFIG_SYS_WHITE_ON_BLACK
 476         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
 477         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
 478 #else
 479         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
 480         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
 481 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
 482
 483 #ifdef  LCD_TEST_PATTERN
 484         test_pattern();
 485 #else
 486         /* set framebuffer to background color */
 487 #if (LCD_BPP != LCD_COLOR32)
 488         memset((char *)lcd_base,
 489                 COLOR_MASK(lcd_color_bg),
 490                 lcd_line_length * panel_info.vl_row);
 491 #else
 492         u32 *ppix = lcd_base;
 493         u32 i;
 494         for (i = 0;
 495            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
 496            i++) {
 497                 *ppix++ = COLOR_MASK(lcd_color_bg);
 498         }
 499 #endif
 500 #endif
 501         /* Paint the logo and retrieve LCD base address */
 502         debug("[LCD] Drawing the logo...\n");
 503         lcd_console_address = lcd_logo();
 504
 505         console_col = 0;
 506         console_row = 0;
 507         lcd_sync();
 508 }
 509
 510 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
 511                         char *const argv[])
 512 {
 513         lcd_clear();
 514         return 0;
 515 }
 516
 517 U_BOOT_CMD(
 518         cls,    1,      1,      do_lcd_clear,
 519         "clear screen",
 520         ""
 521 );
 522
 523 /*----------------------------------------------------------------------*/
 524
 525 static int lcd_init(void *lcdbase)
 526 {
 527         /* Initialize the lcd controller */
 528         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 529
 530         lcd_ctrl_init(lcdbase);
 531
 532         /*
 533          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
 534          * the 'lcdbase' argument and uses custom lcd base address
 535          * by setting up gd->fb_base. Check for this condition and fixup
 536          * 'lcd_base' address.
 537          */
 538         if (map_to_sysmem(lcdbase) != gd->fb_base)
 539                 lcd_base = map_sysmem(gd->fb_base, 0);
 540
 541         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
 542
 543         lcd_get_size(&lcd_line_length);
 544         lcd_is_enabled = 1;
 545         lcd_clear();
 546         lcd_enable();
 547
 548         /* Initialize the console */
 549         console_col = 0;
 550 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
 551         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 552 #else
 553         console_row = 1;        /* leave 1 blank line below logo */
 554 #endif
 555
 556         return 0;
 557 }
 558
 559
 560 /************************************************************************/
 561 /* ** ROM capable initialization part - needed to reserve FB memory     */
 562 /************************************************************************/
 563 /*
 564  * This is called early in the system initialization to grab memory
 565  * for the LCD controller.
 566  * Returns new address for monitor, after reserving LCD buffer memory
 567  *
 568  * Note that this is running from ROM, so no write access to global data.
 569  */
 570 ulong lcd_setmem(ulong addr)
 571 {
 572         ulong size;
 573         int line_length;
 574
 575         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
 576                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
 577
 578         size = lcd_get_size(&line_length);
 579
 580         /* Round up to nearest full page, or MMU section if defined */
 581         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
 582         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
 583
 584         /* Allocate pages for the frame buffer. */
 585         addr -= size;
 586
 587         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
 588               size >> 10, addr);
 589
 590         return addr;
 591 }
 592
 593 /*----------------------------------------------------------------------*/
 594
 595 static void lcd_setfgcolor(int color)
 596 {
 597         lcd_color_fg = color;
 598 }
 599
 600 /*----------------------------------------------------------------------*/
 601
 602 static void lcd_setbgcolor(int color)
 603 {
 604         lcd_color_bg = color;
 605 }
 606
 607 /************************************************************************/
 608 /* ** Chipset depending Bitmap / Logo stuff...                          */
 609 /************************************************************************/
 610 static inline ushort *configuration_get_cmap(void)
 611 {
 612 #if defined CONFIG_CPU_PXA
 613         struct pxafb_info *fbi = &panel_info.pxa;
 614         return (ushort *)fbi->palette;
 615 #elif defined(CONFIG_MPC823)
 616         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 617         cpm8xx_t *cp = &(immr->im_cpm);
 618         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
 619 #elif defined(CONFIG_ATMEL_LCD)
 620         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
 621 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
 622         return panel_info.cmap;
 623 #elif defined(CONFIG_LCD_LOGO)
 624         return bmp_logo_palette;
 625 #else
 626         return NULL;
 627 #endif
 628 }
 629
 630 #ifdef CONFIG_LCD_LOGO
 631 void bitmap_plot(int x, int y)
 632 {
 633 #ifdef CONFIG_ATMEL_LCD
 634         uint *cmap = (uint *)bmp_logo_palette;
 635 #else
 636         ushort *cmap = (ushort *)bmp_logo_palette;
 637 #endif
 638         ushort i, j;
 639         uchar *bmap;
 640         uchar *fb;
 641         ushort *fb16;
 642 #if defined(CONFIG_MPC823)
 643         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 644         cpm8xx_t *cp = &(immr->im_cpm);
 645 #endif
 646         unsigned bpix = NBITS(panel_info.vl_bpix);
 647
 648         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
 649                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 650                 ARRAY_SIZE(bmp_logo_palette));
 651
 652         bmap = &bmp_logo_bitmap[0];
 653         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
 654
 655         if (bpix < 12) {
 656                 /* Leave room for default color map
 657                  * default case: generic system with no cmap (most likely 16bpp)
 658                  * cmap was set to the source palette, so no change is done.
 659                  * This avoids even more ifdefs in the next stanza
 660                  */
 661 #if defined(CONFIG_MPC823)
 662                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
 663 #elif defined(CONFIG_ATMEL_LCD)
 664                 cmap = (uint *)configuration_get_cmap();
 665 #else
 666                 cmap = configuration_get_cmap();
 667 #endif
 668
 669                 WATCHDOG_RESET();
 670
 671                 /* Set color map */
 672                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
 673                         ushort colreg = bmp_logo_palette[i];
 674 #ifdef CONFIG_ATMEL_LCD
 675                         uint lut_entry;
 676 #ifdef CONFIG_ATMEL_LCD_BGR555
 677                         lut_entry = ((colreg & 0x000F) << 11) |
 678                                         ((colreg & 0x00F0) <<  2) |
 679                                         ((colreg & 0x0F00) >>  7);
 680 #else /* CONFIG_ATMEL_LCD_RGB565 */
 681                         lut_entry = ((colreg & 0x000F) << 1) |
 682                                         ((colreg & 0x00F0) << 3) |
 683                                         ((colreg & 0x0F00) << 4);
 684 #endif
 685                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
 686                         cmap++;
 687 #else /* !CONFIG_ATMEL_LCD */
 688                         *cmap++ = colreg;
 689 #endif /* CONFIG_ATMEL_LCD */
 690                 }
 691
 692                 WATCHDOG_RESET();
 693
 694                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 695                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
 696                         bmap += BMP_LOGO_WIDTH;
 697                         fb += panel_info.vl_col;
 698                 }
 699         }
 700         else { /* true color mode */
 701                 u16 col16;
 702                 fb16 = (ushort *)fb;
 703                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
 704                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
 705                                 col16 = bmp_logo_palette[(bmap[j]-16)];
 706                                 fb16[j] =
 707                                         ((col16 & 0x000F) << 1) |
 708                                         ((col16 & 0x00F0) << 3) |
 709                                         ((col16 & 0x0F00) << 4);
 710                                 }
 711                         bmap += BMP_LOGO_WIDTH;
 712                         fb16 += panel_info.vl_col;
 713                 }
 714         }
 715
 716         WATCHDOG_RESET();
 717         lcd_sync();
 718 }
 719 #else
 720 static inline void bitmap_plot(int x, int y) {}
 721 #endif /* CONFIG_LCD_LOGO */
 722
 723 /*----------------------------------------------------------------------*/
 724 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 725 /*
 726  * Display the BMP file located at address bmp_image.
 727  * Only uncompressed.
 728  */
 729
 730 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 731 #define BMP_ALIGN_CENTER        0x7FFF
 732
 733 static void splash_align_axis(int *axis, unsigned long panel_size,
 734                                         unsigned long picture_size)
 735 {
 736         unsigned long panel_picture_delta = panel_size - picture_size;
 737         unsigned long axis_alignment;
 738
 739         if (*axis == BMP_ALIGN_CENTER)
 740                 axis_alignment = panel_picture_delta / 2;
 741         else if (*axis < 0)
 742                 axis_alignment = panel_picture_delta + *axis + 1;
 743         else
 744                 return;
 745
 746         *axis = max(0, (int)axis_alignment);
 747 }
 748 #endif
 749
 750
 751 #ifdef CONFIG_LCD_BMP_RLE8
 752
 753 #define BMP_RLE8_ESCAPE         0
 754 #define BMP_RLE8_EOL            0
 755 #define BMP_RLE8_EOBMP          1
 756 #define BMP_RLE8_DELTA          2
 757
 758 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
 759                                   int cnt)
 760 {
 761         while (cnt > 0) {
 762                 *(*fbp)++ = cmap[*bmap++];
 763                 cnt--;
 764         }
 765 }
 766
 767 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
 768 {
 769         ushort *fb = *fbp;
 770         int cnt_8copy = cnt >> 3;
 771
 772         cnt -= cnt_8copy << 3;
 773         while (cnt_8copy > 0) {
 774                 *fb++ = c;
 775                 *fb++ = c;
 776                 *fb++ = c;
 777                 *fb++ = c;
 778                 *fb++ = c;
 779                 *fb++ = c;
 780                 *fb++ = c;
 781                 *fb++ = c;
 782                 cnt_8copy--;
 783         }
 784         while (cnt > 0) {
 785                 *fb++ = c;
 786                 cnt--;
 787         }
 788         *fbp = fb;
 789 }
 790
 791 /*
 792  * Do not call this function directly, must be called from lcd_display_bitmap.
 793  */
 794 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
 795                                     int x_off, int y_off)
 796 {
 797         uchar *bmap;
 798         ulong width, height;
 799         ulong cnt, runlen;
 800         int x, y;
 801         int decode = 1;
 802
 803         width = get_unaligned_le32(&bmp->header.width);
 804         height = get_unaligned_le32(&bmp->header.height);
 805         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 806
 807         x = 0;
 808         y = height - 1;
 809
 810         while (decode) {
 811                 if (bmap[0] == BMP_RLE8_ESCAPE) {
 812                         switch (bmap[1]) {
 813                         case BMP_RLE8_EOL:
 814                                 /* end of line */
 815                                 bmap += 2;
 816                                 x = 0;
 817                                 y--;
 818                                 /* 16bpix, 2-byte per pixel, width should *2 */
 819                                 fb -= (width * 2 + lcd_line_length);
 820                                 break;
 821                         case BMP_RLE8_EOBMP:
 822                                 /* end of bitmap */
 823                                 decode = 0;
 824                                 break;
 825                         case BMP_RLE8_DELTA:
 826                                 /* delta run */
 827                                 x += bmap[2];
 828                                 y -= bmap[3];
 829                                 /* 16bpix, 2-byte per pixel, x should *2 */
 830                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
 831                                         * lcd_line_length + (x + x_off) * 2);
 832                                 bmap += 4;
 833                                 break;
 834                         default:
 835                                 /* unencoded run */
 836                                 runlen = bmap[1];
 837                                 bmap += 2;
 838                                 if (y < height) {
 839                                         if (x < width) {
 840                                                 if (x + runlen > width)
 841                                                         cnt = width - x;
 842                                                 else
 843                                                         cnt = runlen;
 844                                                 draw_unencoded_bitmap(
 845                                                         (ushort **)&fb,
 846                                                         bmap, cmap, cnt);
 847                                         }
 848                                         x += runlen;
 849                                 }
 850                                 bmap += runlen;
 851                                 if (runlen & 1)
 852                                         bmap++;
 853                         }
 854                 } else {
 855                         /* encoded run */
 856                         if (y < height) {
 857                                 runlen = bmap[0];
 858                                 if (x < width) {
 859                                         /* aggregate the same code */
 860                                         while (bmap[0] == 0xff &&
 861                                                bmap[2] != BMP_RLE8_ESCAPE &&
 862                                                bmap[1] == bmap[3]) {
 863                                                 runlen += bmap[2];
 864                                                 bmap += 2;
 865                                         }
 866                                         if (x + runlen > width)
 867                                                 cnt = width - x;
 868                                         else
 869                                                 cnt = runlen;
 870                                         draw_encoded_bitmap((ushort **)&fb,
 871                                                 cmap[bmap[1]], cnt);
 872                                 }
 873                                 x += runlen;
 874                         }
 875                         bmap += 2;
 876                 }
 877         }
 878 }
 879 #endif
 880
 881 #if defined(CONFIG_MPC823)
 882 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
 883 #else
 884 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
 885 #endif
 886
 887 #if defined(CONFIG_BMP_16BPP)
 888 #if defined(CONFIG_ATMEL_LCD_BGR555)
 889 static inline void fb_put_word(uchar **fb, uchar **from)
 890 {
 891         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
 892         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
 893         *from += 2;
 894 }
 895 #else
 896 static inline void fb_put_word(uchar **fb, uchar **from)
 897 {
 898         *(*fb)++ = *(*from)++;
 899         *(*fb)++ = *(*from)++;
 900 }
 901 #endif
 902 #endif /* CONFIG_BMP_16BPP */
 903
 904 int lcd_display_bitmap(ulong bmp_image, int x, int y)
 905 {
 906         ushort *cmap = NULL;
 907         ushort *cmap_base = NULL;
 908         ushort i, j;
 909         uchar *fb;
 910         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
 911         uchar *bmap;
 912         ushort padded_width;
 913         unsigned long width, height, byte_width;
 914         unsigned long pwidth = panel_info.vl_col;
 915         unsigned colors, bpix, bmp_bpix;
 916
 917         if (!bmp || !(bmp->header.signature[0] == 'B' &&
 918                 bmp->header.signature[1] == 'M')) {
 919                 printf("Error: no valid bmp image at %lx\n", bmp_image);
 920
 921                 return 1;
 922         }
 923
 924         width = get_unaligned_le32(&bmp->header.width);
 925         height = get_unaligned_le32(&bmp->header.height);
 926         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
 927
 928         colors = 1 << bmp_bpix;
 929
 930         bpix = NBITS(panel_info.vl_bpix);
 931
 932         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
 933                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 934                         bpix, bmp_bpix);
 935
 936                 return 1;
 937         }
 938
 939         /*
 940          * We support displaying 8bpp BMPs on 16bpp LCDs
 941          * and displaying 24bpp BMPs on 32bpp LCDs
 942          * */
 943         if (bpix != bmp_bpix &&
 944             !(bmp_bpix == 8 && bpix == 16) &&
 945             !(bmp_bpix == 24 && bpix == 32)) {
 946                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
 947                         bpix, get_unaligned_le16(&bmp->header.bit_count));
 948                 return 1;
 949         }
 950
 951         debug("Display-bmp: %d x %d  with %d colors\n",
 952                 (int)width, (int)height, (int)colors);
 953
 954         if (bmp_bpix == 8) {
 955                 cmap = configuration_get_cmap();
 956                 cmap_base = cmap;
 957
 958                 /* Set color map */
 959                 for (i = 0; i < colors; ++i) {
 960                         bmp_color_table_entry_t cte = bmp->color_table[i];
 961 #if !defined(CONFIG_ATMEL_LCD)
 962                         ushort colreg =
 963                                 ( ((cte.red)   << 8) & 0xf800) |
 964                                 ( ((cte.green) << 3) & 0x07e0) |
 965                                 ( ((cte.blue)  >> 3) & 0x001f) ;
 966                         *cmap = colreg;
 967 #if defined(CONFIG_MPC823)
 968                         cmap--;
 969 #else
 970                         cmap++;
 971 #endif
 972 #else /* CONFIG_ATMEL_LCD */
 973                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
 974 #endif
 975                 }
 976         }
 977
 978         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
 979
 980 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 981         splash_align_axis(&x, pwidth, width);
 982         splash_align_axis(&y, panel_info.vl_row, height);
 983 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
 984
 985         if ((x + width) > pwidth)
 986                 width = pwidth - x;
 987         if ((y + height) > panel_info.vl_row)
 988                 height = panel_info.vl_row - y;
 989
 990         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
 991         fb   = (uchar *)(lcd_base +
 992                 (y + height - 1) * lcd_line_length + x * bpix / 8);
 993
 994         switch (bmp_bpix) {
 995         case 1: /* pass through */
 996         case 8: {
 997 #ifdef CONFIG_LCD_BMP_RLE8
 998                 u32 compression = get_unaligned_le32(&bmp->header.compression);
 999                 if (compression == BMP_BI_RLE8) {
1000                         if (bpix != 16) {
1001                                 /* TODO implement render code for bpix != 16 */
1002                                 printf("Error: only support 16 bpix");
1003                                 return 1;
1004                         }
1005                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1006                         break;
1007                 }
1008 #endif
1009
1010                 if (bpix != 16)
1011                         byte_width = width;
1012                 else
1013                         byte_width = width * 2;
1014
1015                 for (i = 0; i < height; ++i) {
1016                         WATCHDOG_RESET();
1017                         for (j = 0; j < width; j++) {
1018                                 if (bpix != 16) {
1019                                         FB_PUT_BYTE(fb, bmap);
1020                                 } else {
1021                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1022                                         fb += sizeof(uint16_t) / sizeof(*fb);
1023                                 }
1024                         }
1025                         bmap += (padded_width - width);
1026                         fb -= byte_width + lcd_line_length;
1027                 }
1028                 break;
1029         }
1030 #if defined(CONFIG_BMP_16BPP)
1031         case 16:
1032                 for (i = 0; i < height; ++i) {
1033                         WATCHDOG_RESET();
1034                         for (j = 0; j < width; j++)
1035                                 fb_put_word(&fb, &bmap);
1036
1037                         bmap += (padded_width - width) * 2;
1038                         fb -= width * 2 + lcd_line_length;
1039                 }
1040                 break;
1041 #endif /* CONFIG_BMP_16BPP */
1042 #if defined(CONFIG_BMP_24BMP)
1043         case 24:
1044                 for (i = 0; i < height; ++i) {
1045                         for (j = 0; j < width; j++) {
1046                                 *(fb++) = *(bmap++);
1047                                 *(fb++) = *(bmap++);
1048                                 *(fb++) = *(bmap++);
1049                                 *(fb++) = 0;
1050                         }
1051                         fb -= lcd_line_length + width * (bpix / 8);
1052                 }
1053                 break;
1054 #endif /* CONFIG_BMP_24BMP */
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_t(short, col, CONSOLE_COLS - 1);
1142         console_row = min_t(short, 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 #if LCD_BPP == LCD_COLOR16
1169         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
1170                                        panel_info.vl_col, panel_info.vl_row,
1171                                        panel_info.vl_col * 2, "r5g6b5");
1172 #else
1173         return -1;
1174 #endif
1175 }
1176
1177 int lcd_dt_simplefb_add_node(void *blob)
1178 {
1179         static const char compat[] = "simple-framebuffer";
1180         static const char disabled[] = "disabled";
1181         int off, ret;
1182
1183         off = fdt_add_subnode(blob, 0, "framebuffer");
1184         if (off < 0)
1185                 return -1;
1186
1187         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1188         if (ret < 0)
1189                 return -1;
1190
1191         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1192         if (ret < 0)
1193                 return -1;
1194
1195         return lcd_dt_simplefb_configure_node(blob, off);
1196 }
1197
1198 int lcd_dt_simplefb_enable_existing_node(void *blob)
1199 {
1200         int off;
1201
1202         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1203         if (off < 0)
1204                 return -1;
1205
1206         return lcd_dt_simplefb_configure_node(blob, off);
1207 }
1208 #endif