787d80e3cbeb1da848a2ac756a159121eb064b41
[oweals/u-boot.git] / 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
34 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
35         defined(CONFIG_CPU_MONAHANS)
36 #include <asm/byteorder.h>
37 #endif
38
39 #if defined(CONFIG_MPC823)
40 #include <lcdvideo.h>
41 #endif
42
43 #if defined(CONFIG_ATMEL_LCD)
44 #include <atmel_lcdc.h>
45 #endif
46
47 #if defined(CONFIG_LCD_DT_SIMPLEFB)
48 #include <libfdt.h>
49 #endif
50
51 /************************************************************************/
52 /* ** FONT DATA                                                         */
53 /************************************************************************/
54 #include <video_font.h>         /* Get font data, width and height      */
55
56 /************************************************************************/
57 /* ** LOGO DATA                                                         */
58 /************************************************************************/
59 #ifdef CONFIG_LCD_LOGO
60 # include <bmp_logo.h>          /* Get logo data, width and height      */
61 # include <bmp_logo_data.h>
62 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
63 #  error Default Color Map overlaps with Logo Color Map
64 # endif
65 #endif
66
67 #ifdef CONFIG_SANDBOX
68 #include <asm/sdl.h>
69 #endif
70
71 #ifndef CONFIG_LCD_ALIGNMENT
72 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
73 #endif
74
75 /* By default we scroll by a single line */
76 #ifndef CONFIG_CONSOLE_SCROLL_LINES
77 #define CONFIG_CONSOLE_SCROLL_LINES 1
78 #endif
79
80 /************************************************************************/
81 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
82 /************************************************************************/
83 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
84 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
85                                         / VIDEO_FONT_HEIGHT)
86 #else
87 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
88 #endif
89
90 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
91 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
92 #define CONSOLE_ROW_FIRST       lcd_console_address
93 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
94 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
95                                         - CONSOLE_ROW_SIZE)
96 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
97 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
98
99 #if LCD_BPP == LCD_MONOCHROME
100 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
101                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
102 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16) || \
103         (LCD_BPP == LCD_COLOR32)
104 # define COLOR_MASK(c)          (c)
105 #else
106 # error Unsupported LCD BPP.
107 #endif
108
109 DECLARE_GLOBAL_DATA_PTR;
110
111 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
112 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
113
114 static int lcd_init(void *lcdbase);
115
116 static void *lcd_logo(void);
117
118 static void lcd_setfgcolor(int color);
119 static void lcd_setbgcolor(int color);
120
121 static int lcd_color_fg;
122 static int lcd_color_bg;
123 int lcd_line_length;
124
125 char lcd_is_enabled = 0;
126
127 static short console_col;
128 static short console_row;
129
130 static void *lcd_console_address;
131 static void *lcd_base;                  /* Start of framebuffer memory  */
132
133 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
134
135 /************************************************************************/
136
137 /* Flush LCD activity to the caches */
138 void lcd_sync(void)
139 {
140         /*
141          * flush_dcache_range() is declared in common.h but it seems that some
142          * architectures do not actually implement it. Is there a way to find
143          * out whether it exists? For now, ARM is safe.
144          */
145 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
146         int line_length;
147
148         if (lcd_flush_dcache)
149                 flush_dcache_range((u32)lcd_base,
150                         (u32)(lcd_base + lcd_get_size(&line_length)));
151 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
152         static ulong last_sync;
153
154         if (get_timer(last_sync) > 10) {
155                 sandbox_sdl_sync(lcd_base);
156                 last_sync = get_timer(0);
157         }
158 #endif
159 }
160
161 void lcd_set_flush_dcache(int flush)
162 {
163         lcd_flush_dcache = (flush != 0);
164 }
165
166 /*----------------------------------------------------------------------*/
167
168 static void console_scrollup(void)
169 {
170         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
171
172         /* Copy up rows ignoring those that will be overwritten */
173         memcpy(CONSOLE_ROW_FIRST,
174                lcd_console_address + CONSOLE_ROW_SIZE * rows,
175                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
176
177         /* Clear the last rows */
178 #if (LCD_BPP != LCD_COLOR32)
179         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
180                 COLOR_MASK(lcd_color_bg),
181                 CONSOLE_ROW_SIZE * rows);
182 #else
183         u32 *ppix = lcd_console_address +
184                     CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows;
185         u32 i;
186         for (i = 0;
187             i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix);
188             i++) {
189                 *ppix++ = COLOR_MASK(lcd_color_bg);
190         }
191 #endif
192         lcd_sync();
193         console_row -= rows;
194 }
195
196 /*----------------------------------------------------------------------*/
197
198 static inline void console_back(void)
199 {
200         if (--console_col < 0) {
201                 console_col = CONSOLE_COLS-1 ;
202                 if (--console_row < 0)
203                         console_row = 0;
204         }
205
206         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
207                 console_row * VIDEO_FONT_HEIGHT, ' ');
208 }
209
210 /*----------------------------------------------------------------------*/
211
212 static inline void console_newline(void)
213 {
214         console_col = 0;
215
216         /* Check if we need to scroll the terminal */
217         if (++console_row >= CONSOLE_ROWS)
218                 console_scrollup();
219         else
220                 lcd_sync();
221 }
222
223 /*----------------------------------------------------------------------*/
224
225 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
226 {
227         lcd_putc(c);
228 }
229
230 void lcd_putc(const char c)
231 {
232         if (!lcd_is_enabled) {
233                 serial_putc(c);
234
235                 return;
236         }
237
238         switch (c) {
239         case '\r':
240                 console_col = 0;
241
242                 return;
243         case '\n':
244                 console_newline();
245
246                 return;
247         case '\t':      /* Tab (8 chars alignment) */
248                 console_col +=  8;
249                 console_col &= ~7;
250
251                 if (console_col >= CONSOLE_COLS)
252                         console_newline();
253
254                 return;
255         case '\b':
256                 console_back();
257
258                 return;
259         default:
260                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
261                         console_row * VIDEO_FONT_HEIGHT, c);
262                 if (++console_col >= CONSOLE_COLS)
263                         console_newline();
264         }
265 }
266
267 /*----------------------------------------------------------------------*/
268
269 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
270 {
271         lcd_puts(s);
272 }
273
274 void lcd_puts(const char *s)
275 {
276         if (!lcd_is_enabled) {
277                 serial_puts(s);
278
279                 return;
280         }
281
282         while (*s)
283                 lcd_putc(*s++);
284
285         lcd_sync();
286 }
287
288 /*----------------------------------------------------------------------*/
289
290 void lcd_printf(const char *fmt, ...)
291 {
292         va_list args;
293         char buf[CONFIG_SYS_PBSIZE];
294
295         va_start(args, fmt);
296         vsprintf(buf, fmt, args);
297         va_end(args);
298
299         lcd_puts(buf);
300 }
301
302 /************************************************************************/
303 /* ** Low-Level Graphics Routines                                       */
304 /************************************************************************/
305
306 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
307 {
308         uchar *dest;
309         ushort row;
310
311 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
312         y += BMP_LOGO_HEIGHT;
313 #endif
314
315 #if LCD_BPP == LCD_MONOCHROME
316         ushort off  = x * (1 << LCD_BPP) % 8;
317 #endif
318
319         dest = (uchar *)(lcd_base + y * lcd_line_length + x * NBITS(LCD_BPP)/8);
320
321         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
322                 uchar *s = str;
323                 int i;
324 #if LCD_BPP == LCD_COLOR16
325                 ushort *d = (ushort *)dest;
326 #elif LCD_BPP == LCD_COLOR32
327                 u32 *d = (u32 *)dest;
328 #else
329                 uchar *d = dest;
330 #endif
331
332 #if LCD_BPP == LCD_MONOCHROME
333                 uchar rest = *d & -(1 << (8 - off));
334                 uchar sym;
335 #endif
336                 for (i = 0; i < count; ++i) {
337                         uchar c, bits;
338
339                         c = *s++;
340                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
341
342 #if LCD_BPP == LCD_MONOCHROME
343                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
344                                 (COLOR_MASK(lcd_color_bg) & ~bits);
345
346                         *d++ = rest | (sym >> off);
347                         rest = sym << (8-off);
348 #elif LCD_BPP == LCD_COLOR8
349                         for (c = 0; c < 8; ++c) {
350                                 *d++ = (bits & 0x80) ?
351                                                 lcd_color_fg : lcd_color_bg;
352                                 bits <<= 1;
353                         }
354 #elif LCD_BPP == LCD_COLOR16
355                         for (c = 0; c < 8; ++c) {
356                                 *d++ = (bits & 0x80) ?
357                                                 lcd_color_fg : lcd_color_bg;
358                                 bits <<= 1;
359                         }
360 #elif LCD_BPP == LCD_COLOR32
361                         for (c = 0; c < 8; ++c) {
362                                 *d++ = (bits & 0x80) ?
363                                                 lcd_color_fg : lcd_color_bg;
364                                 bits <<= 1;
365                         }
366 #endif
367                 }
368 #if LCD_BPP == LCD_MONOCHROME
369                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
370 #endif
371         }
372 }
373
374 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
375 {
376         lcd_drawchars(x, y, &c, 1);
377 }
378
379 /************************************************************************/
380 /**  Small utility to check that you got the colours right              */
381 /************************************************************************/
382 #ifdef LCD_TEST_PATTERN
383
384 #define N_BLK_VERT      2
385 #define N_BLK_HOR       3
386
387 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
388         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
389         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
390 };
391
392 static void test_pattern(void)
393 {
394         ushort v_max  = panel_info.vl_row;
395         ushort h_max  = panel_info.vl_col;
396         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
397         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
398         ushort v, h;
399         uchar *pix = (uchar *)lcd_base;
400
401         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
402                 h_max, v_max, h_step, v_step);
403
404         /* WARNING: Code silently assumes 8bit/pixel */
405         for (v = 0; v < v_max; ++v) {
406                 uchar iy = v / v_step;
407                 for (h = 0; h < h_max; ++h) {
408                         uchar ix = N_BLK_HOR * iy + h / h_step;
409                         *pix++ = test_colors[ix];
410                 }
411         }
412 }
413 #endif /* LCD_TEST_PATTERN */
414
415
416 /************************************************************************/
417 /* ** GENERIC Initialization Routines                                   */
418 /************************************************************************/
419 /*
420  * With most lcd drivers the line length is set up
421  * by calculating it from panel_info parameters. Some
422  * drivers need to calculate the line length differently,
423  * so make the function weak to allow overriding it.
424  */
425 __weak int lcd_get_size(int *line_length)
426 {
427         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
428         return *line_length * panel_info.vl_row;
429 }
430
431 int drv_lcd_init(void)
432 {
433         struct stdio_dev lcddev;
434         int rc;
435
436         lcd_base = map_sysmem(gd->fb_base, 0);
437
438         lcd_init(lcd_base);             /* LCD initialization */
439
440         /* Device initialization */
441         memset(&lcddev, 0, sizeof(lcddev));
442
443         strcpy(lcddev.name, "lcd");
444         lcddev.ext   = 0;                       /* No extensions */
445         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
446         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
447         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
448
449         rc = stdio_register(&lcddev);
450
451         return (rc == 0) ? 1 : rc;
452 }
453
454 /*----------------------------------------------------------------------*/
455 void lcd_clear(void)
456 {
457 #if LCD_BPP == LCD_MONOCHROME
458         /* Setting the palette */
459         lcd_initcolregs();
460
461 #elif LCD_BPP == LCD_COLOR8
462         /* Setting the palette */
463         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
464         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
465         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
466         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
467         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
468         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
469         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
470         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
471         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
472 #endif
473
474 #ifndef CONFIG_SYS_WHITE_ON_BLACK
475         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
476         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
477 #else
478         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
479         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
480 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
481
482 #ifdef  LCD_TEST_PATTERN
483         test_pattern();
484 #else
485         /* set framebuffer to background color */
486 #if (LCD_BPP != LCD_COLOR32)
487         memset((char *)lcd_base,
488                 COLOR_MASK(lcd_color_bg),
489                 lcd_line_length * panel_info.vl_row);
490 #else
491         u32 *ppix = lcd_base;
492         u32 i;
493         for (i = 0;
494            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
495            i++) {
496                 *ppix++ = COLOR_MASK(lcd_color_bg);
497         }
498 #endif
499 #endif
500         /* Paint the logo and retrieve LCD base address */
501         debug("[LCD] Drawing the logo...\n");
502         lcd_console_address = lcd_logo();
503
504         console_col = 0;
505         console_row = 0;
506         lcd_sync();
507 }
508
509 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
510                         char *const argv[])
511 {
512         lcd_clear();
513         return 0;
514 }
515
516 U_BOOT_CMD(
517         cls,    1,      1,      do_lcd_clear,
518         "clear screen",
519         ""
520 );
521
522 /*----------------------------------------------------------------------*/
523
524 static int lcd_init(void *lcdbase)
525 {
526         /* Initialize the lcd controller */
527         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
528
529         lcd_ctrl_init(lcdbase);
530
531         /*
532          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
533          * the 'lcdbase' argument and uses custom lcd base address
534          * by setting up gd->fb_base. Check for this condition and fixup
535          * 'lcd_base' address.
536          */
537         if (map_to_sysmem(lcdbase) != gd->fb_base)
538                 lcd_base = map_sysmem(gd->fb_base, 0);
539
540         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
541
542         lcd_get_size(&lcd_line_length);
543         lcd_is_enabled = 1;
544         lcd_clear();
545         lcd_enable();
546
547         /* Initialize the console */
548         console_col = 0;
549 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
550         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
551 #else
552         console_row = 1;        /* leave 1 blank line below logo */
553 #endif
554
555         return 0;
556 }
557
558
559 /************************************************************************/
560 /* ** ROM capable initialization part - needed to reserve FB memory     */
561 /************************************************************************/
562 /*
563  * This is called early in the system initialization to grab memory
564  * for the LCD controller.
565  * Returns new address for monitor, after reserving LCD buffer memory
566  *
567  * Note that this is running from ROM, so no write access to global data.
568  */
569 ulong lcd_setmem(ulong addr)
570 {
571         ulong size;
572         int line_length;
573
574         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
575                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
576
577         size = lcd_get_size(&line_length);
578
579         /* Round up to nearest full page, or MMU section if defined */
580         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
581         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
582
583         /* Allocate pages for the frame buffer. */
584         addr -= size;
585
586         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
587               size >> 10, addr);
588
589         return addr;
590 }
591
592 /*----------------------------------------------------------------------*/
593
594 static void lcd_setfgcolor(int color)
595 {
596         lcd_color_fg = color;
597 }
598
599 /*----------------------------------------------------------------------*/
600
601 static void lcd_setbgcolor(int color)
602 {
603         lcd_color_bg = color;
604 }
605
606 /************************************************************************/
607 /* ** Chipset depending Bitmap / Logo stuff...                          */
608 /************************************************************************/
609 static inline ushort *configuration_get_cmap(void)
610 {
611 #if defined CONFIG_CPU_PXA
612         struct pxafb_info *fbi = &panel_info.pxa;
613         return (ushort *)fbi->palette;
614 #elif defined(CONFIG_MPC823)
615         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
616         cpm8xx_t *cp = &(immr->im_cpm);
617         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
618 #elif defined(CONFIG_ATMEL_LCD)
619         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
620 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
621         return panel_info.cmap;
622 #elif defined(CONFIG_LCD_LOGO)
623         return bmp_logo_palette;
624 #else
625         return NULL;
626 #endif
627 }
628
629 #ifdef CONFIG_LCD_LOGO
630 void bitmap_plot(int x, int y)
631 {
632 #ifdef CONFIG_ATMEL_LCD
633         uint *cmap = (uint *)bmp_logo_palette;
634 #else
635         ushort *cmap = (ushort *)bmp_logo_palette;
636 #endif
637         ushort i, j;
638         uchar *bmap;
639         uchar *fb;
640         ushort *fb16;
641 #if defined(CONFIG_MPC823)
642         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
643         cpm8xx_t *cp = &(immr->im_cpm);
644 #endif
645         unsigned bpix = NBITS(panel_info.vl_bpix);
646
647         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
648                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
649                 ARRAY_SIZE(bmp_logo_palette));
650
651         bmap = &bmp_logo_bitmap[0];
652         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
653
654         if (bpix < 12) {
655                 /* Leave room for default color map
656                  * default case: generic system with no cmap (most likely 16bpp)
657                  * cmap was set to the source palette, so no change is done.
658                  * This avoids even more ifdefs in the next stanza
659                  */
660 #if defined(CONFIG_MPC823)
661                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
662 #elif defined(CONFIG_ATMEL_LCD)
663                 cmap = (uint *)configuration_get_cmap();
664 #else
665                 cmap = configuration_get_cmap();
666 #endif
667
668                 WATCHDOG_RESET();
669
670                 /* Set color map */
671                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
672                         ushort colreg = bmp_logo_palette[i];
673 #ifdef CONFIG_ATMEL_LCD
674                         uint lut_entry;
675 #ifdef CONFIG_ATMEL_LCD_BGR555
676                         lut_entry = ((colreg & 0x000F) << 11) |
677                                         ((colreg & 0x00F0) <<  2) |
678                                         ((colreg & 0x0F00) >>  7);
679 #else /* CONFIG_ATMEL_LCD_RGB565 */
680                         lut_entry = ((colreg & 0x000F) << 1) |
681                                         ((colreg & 0x00F0) << 3) |
682                                         ((colreg & 0x0F00) << 4);
683 #endif
684                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
685                         cmap++;
686 #else /* !CONFIG_ATMEL_LCD */
687 #ifdef  CONFIG_SYS_INVERT_COLORS
688                         *cmap++ = 0xffff - colreg;
689 #else
690                         *cmap++ = colreg;
691 #endif
692 #endif /* CONFIG_ATMEL_LCD */
693                 }
694
695                 WATCHDOG_RESET();
696
697                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
698                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
699                         bmap += BMP_LOGO_WIDTH;
700                         fb += panel_info.vl_col;
701                 }
702         }
703         else { /* true color mode */
704                 u16 col16;
705                 fb16 = (ushort *)fb;
706                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
707                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
708                                 col16 = bmp_logo_palette[(bmap[j]-16)];
709                                 fb16[j] =
710                                         ((col16 & 0x000F) << 1) |
711                                         ((col16 & 0x00F0) << 3) |
712                                         ((col16 & 0x0F00) << 4);
713                                 }
714                         bmap += BMP_LOGO_WIDTH;
715                         fb16 += panel_info.vl_col;
716                 }
717         }
718
719         WATCHDOG_RESET();
720         lcd_sync();
721 }
722 #else
723 static inline void bitmap_plot(int x, int y) {}
724 #endif /* CONFIG_LCD_LOGO */
725
726 /*----------------------------------------------------------------------*/
727 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
728 /*
729  * Display the BMP file located at address bmp_image.
730  * Only uncompressed.
731  */
732
733 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
734 #define BMP_ALIGN_CENTER        0x7FFF
735
736 static void splash_align_axis(int *axis, unsigned long panel_size,
737                                         unsigned long picture_size)
738 {
739         unsigned long panel_picture_delta = panel_size - picture_size;
740         unsigned long axis_alignment;
741
742         if (*axis == BMP_ALIGN_CENTER)
743                 axis_alignment = panel_picture_delta / 2;
744         else if (*axis < 0)
745                 axis_alignment = panel_picture_delta + *axis + 1;
746         else
747                 return;
748
749         *axis = max(0, axis_alignment);
750 }
751 #endif
752
753
754 #ifdef CONFIG_LCD_BMP_RLE8
755
756 #define BMP_RLE8_ESCAPE         0
757 #define BMP_RLE8_EOL            0
758 #define BMP_RLE8_EOBMP          1
759 #define BMP_RLE8_DELTA          2
760
761 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
762                                   int cnt)
763 {
764         while (cnt > 0) {
765                 *(*fbp)++ = cmap[*bmap++];
766                 cnt--;
767         }
768 }
769
770 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
771 {
772         ushort *fb = *fbp;
773         int cnt_8copy = cnt >> 3;
774
775         cnt -= cnt_8copy << 3;
776         while (cnt_8copy > 0) {
777                 *fb++ = c;
778                 *fb++ = c;
779                 *fb++ = c;
780                 *fb++ = c;
781                 *fb++ = c;
782                 *fb++ = c;
783                 *fb++ = c;
784                 *fb++ = c;
785                 cnt_8copy--;
786         }
787         while (cnt > 0) {
788                 *fb++ = c;
789                 cnt--;
790         }
791         *fbp = fb;
792 }
793
794 /*
795  * Do not call this function directly, must be called from lcd_display_bitmap.
796  */
797 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
798                                     int x_off, int y_off)
799 {
800         uchar *bmap;
801         ulong width, height;
802         ulong cnt, runlen;
803         int x, y;
804         int decode = 1;
805
806         width = get_unaligned_le32(&bmp->header.width);
807         height = get_unaligned_le32(&bmp->header.height);
808         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
809
810         x = 0;
811         y = height - 1;
812
813         while (decode) {
814                 if (bmap[0] == BMP_RLE8_ESCAPE) {
815                         switch (bmap[1]) {
816                         case BMP_RLE8_EOL:
817                                 /* end of line */
818                                 bmap += 2;
819                                 x = 0;
820                                 y--;
821                                 /* 16bpix, 2-byte per pixel, width should *2 */
822                                 fb -= (width * 2 + lcd_line_length);
823                                 break;
824                         case BMP_RLE8_EOBMP:
825                                 /* end of bitmap */
826                                 decode = 0;
827                                 break;
828                         case BMP_RLE8_DELTA:
829                                 /* delta run */
830                                 x += bmap[2];
831                                 y -= bmap[3];
832                                 /* 16bpix, 2-byte per pixel, x should *2 */
833                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
834                                         * lcd_line_length + (x + x_off) * 2);
835                                 bmap += 4;
836                                 break;
837                         default:
838                                 /* unencoded run */
839                                 runlen = bmap[1];
840                                 bmap += 2;
841                                 if (y < height) {
842                                         if (x < width) {
843                                                 if (x + runlen > width)
844                                                         cnt = width - x;
845                                                 else
846                                                         cnt = runlen;
847                                                 draw_unencoded_bitmap(
848                                                         (ushort **)&fb,
849                                                         bmap, cmap, cnt);
850                                         }
851                                         x += runlen;
852                                 }
853                                 bmap += runlen;
854                                 if (runlen & 1)
855                                         bmap++;
856                         }
857                 } else {
858                         /* encoded run */
859                         if (y < height) {
860                                 runlen = bmap[0];
861                                 if (x < width) {
862                                         /* aggregate the same code */
863                                         while (bmap[0] == 0xff &&
864                                                bmap[2] != BMP_RLE8_ESCAPE &&
865                                                bmap[1] == bmap[3]) {
866                                                 runlen += bmap[2];
867                                                 bmap += 2;
868                                         }
869                                         if (x + runlen > width)
870                                                 cnt = width - x;
871                                         else
872                                                 cnt = runlen;
873                                         draw_encoded_bitmap((ushort **)&fb,
874                                                 cmap[bmap[1]], cnt);
875                                 }
876                                 x += runlen;
877                         }
878                         bmap += 2;
879                 }
880         }
881 }
882 #endif
883
884 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
885 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
886 #else
887 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
888 #endif
889
890 #if defined(CONFIG_BMP_16BPP)
891 #if defined(CONFIG_ATMEL_LCD_BGR555)
892 static inline void fb_put_word(uchar **fb, uchar **from)
893 {
894         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
895         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
896         *from += 2;
897 }
898 #else
899 static inline void fb_put_word(uchar **fb, uchar **from)
900 {
901         *(*fb)++ = *(*from)++;
902         *(*fb)++ = *(*from)++;
903 }
904 #endif
905 #endif /* CONFIG_BMP_16BPP */
906
907 int lcd_display_bitmap(ulong bmp_image, int x, int y)
908 {
909 #if !defined(CONFIG_MCC200)
910         ushort *cmap = NULL;
911 #endif
912         ushort *cmap_base = NULL;
913         ushort i, j;
914         uchar *fb;
915         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
916         uchar *bmap;
917         ushort padded_width;
918         unsigned long width, height, byte_width;
919         unsigned long pwidth = panel_info.vl_col;
920         unsigned colors, bpix, bmp_bpix;
921
922         if (!bmp || !(bmp->header.signature[0] == 'B' &&
923                 bmp->header.signature[1] == 'M')) {
924                 printf("Error: no valid bmp image at %lx\n", bmp_image);
925
926                 return 1;
927         }
928
929         width = get_unaligned_le32(&bmp->header.width);
930         height = get_unaligned_le32(&bmp->header.height);
931         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
932
933         colors = 1 << bmp_bpix;
934
935         bpix = NBITS(panel_info.vl_bpix);
936
937         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
938                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
939                         bpix, bmp_bpix);
940
941                 return 1;
942         }
943
944         /*
945          * We support displaying 8bpp BMPs on 16bpp LCDs
946          * and displaying 24bpp BMPs on 32bpp LCDs
947          * */
948         if (bpix != bmp_bpix &&
949             !(bmp_bpix == 8 && bpix == 16) &&
950             !(bmp_bpix == 24 && bpix == 32)) {
951                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
952                         bpix, get_unaligned_le16(&bmp->header.bit_count));
953                 return 1;
954         }
955
956         debug("Display-bmp: %d x %d  with %d colors\n",
957                 (int)width, (int)height, (int)colors);
958
959 #if !defined(CONFIG_MCC200)
960         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
961         if (bmp_bpix == 8) {
962                 cmap = configuration_get_cmap();
963                 cmap_base = cmap;
964
965                 /* Set color map */
966                 for (i = 0; i < colors; ++i) {
967                         bmp_color_table_entry_t cte = bmp->color_table[i];
968 #if !defined(CONFIG_ATMEL_LCD)
969                         ushort colreg =
970                                 ( ((cte.red)   << 8) & 0xf800) |
971                                 ( ((cte.green) << 3) & 0x07e0) |
972                                 ( ((cte.blue)  >> 3) & 0x001f) ;
973 #ifdef CONFIG_SYS_INVERT_COLORS
974                         *cmap = 0xffff - colreg;
975 #else
976                         *cmap = colreg;
977 #endif
978 #if defined(CONFIG_MPC823)
979                         cmap--;
980 #else
981                         cmap++;
982 #endif
983 #else /* CONFIG_ATMEL_LCD */
984                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
985 #endif
986                 }
987         }
988 #endif
989         /*
990          *  BMP format for Monochrome assumes that the state of a
991          * pixel is described on a per Bit basis, not per Byte.
992          *  So, in case of Monochrome BMP we should align widths
993          * on a byte boundary and convert them from Bit to Byte
994          * units.
995          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
996          * their own ways, so make the converting to be MCC200
997          * specific.
998          */
999 #if defined(CONFIG_MCC200)
1000         if (bpix == 1) {
1001                 width = ((width + 7) & ~7) >> 3;
1002                 x     = ((x + 7) & ~7) >> 3;
1003                 pwidth= ((pwidth + 7) & ~7) >> 3;
1004         }
1005 #endif
1006
1007         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
1008
1009 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1010         splash_align_axis(&x, pwidth, width);
1011         splash_align_axis(&y, panel_info.vl_row, height);
1012 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1013
1014         if ((x + width) > pwidth)
1015                 width = pwidth - x;
1016         if ((y + height) > panel_info.vl_row)
1017                 height = panel_info.vl_row - y;
1018
1019         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
1020         fb   = (uchar *)(lcd_base +
1021                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1022
1023         switch (bmp_bpix) {
1024         case 1: /* pass through */
1025         case 8: {
1026 #ifdef CONFIG_LCD_BMP_RLE8
1027                 u32 compression = get_unaligned_le32(&bmp->header.compression);
1028                 if (compression == BMP_BI_RLE8) {
1029                         if (bpix != 16) {
1030                                 /* TODO implement render code for bpix != 16 */
1031                                 printf("Error: only support 16 bpix");
1032                                 return 1;
1033                         }
1034                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1035                         break;
1036                 }
1037 #endif
1038
1039                 if (bpix != 16)
1040                         byte_width = width;
1041                 else
1042                         byte_width = width * 2;
1043
1044                 for (i = 0; i < height; ++i) {
1045                         WATCHDOG_RESET();
1046                         for (j = 0; j < width; j++) {
1047                                 if (bpix != 16) {
1048                                         FB_PUT_BYTE(fb, bmap);
1049                                 } else {
1050                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1051                                         fb += sizeof(uint16_t) / sizeof(*fb);
1052                                 }
1053                         }
1054                         bmap += (padded_width - width);
1055                         fb -= byte_width + lcd_line_length;
1056                 }
1057                 break;
1058         }
1059 #if defined(CONFIG_BMP_16BPP)
1060         case 16:
1061                 for (i = 0; i < height; ++i) {
1062                         WATCHDOG_RESET();
1063                         for (j = 0; j < width; j++)
1064                                 fb_put_word(&fb, &bmap);
1065
1066                         bmap += (padded_width - width) * 2;
1067                         fb -= width * 2 + lcd_line_length;
1068                 }
1069                 break;
1070 #endif /* CONFIG_BMP_16BPP */
1071 #if defined(CONFIG_BMP_24BMP)
1072         case 24:
1073                 for (i = 0; i < height; ++i) {
1074                         for (j = 0; j < width; j++) {
1075                                 *(fb++) = *(bmap++);
1076                                 *(fb++) = *(bmap++);
1077                                 *(fb++) = *(bmap++);
1078                                 *(fb++) = 0;
1079                         }
1080                         fb -= lcd_line_length + width * (bpix / 8);
1081                 }
1082                 break;
1083 #endif /* CONFIG_BMP_24BMP */
1084 #if defined(CONFIG_BMP_32BPP)
1085         case 32:
1086                 for (i = 0; i < height; ++i) {
1087                         for (j = 0; j < width; j++) {
1088                                 *(fb++) = *(bmap++);
1089                                 *(fb++) = *(bmap++);
1090                                 *(fb++) = *(bmap++);
1091                                 *(fb++) = *(bmap++);
1092                         }
1093                         fb -= lcd_line_length + width * (bpix / 8);
1094                 }
1095                 break;
1096 #endif /* CONFIG_BMP_32BPP */
1097         default:
1098                 break;
1099         };
1100
1101         lcd_sync();
1102         return 0;
1103 }
1104 #endif
1105
1106 static void *lcd_logo(void)
1107 {
1108 #ifdef CONFIG_SPLASH_SCREEN
1109         char *s;
1110         ulong addr;
1111         static int do_splash = 1;
1112
1113         if (do_splash && (s = getenv("splashimage")) != NULL) {
1114                 int x = 0, y = 0;
1115                 do_splash = 0;
1116
1117                 if (splash_screen_prepare())
1118                         return (void *)lcd_base;
1119
1120                 addr = simple_strtoul (s, NULL, 16);
1121
1122                 splash_get_pos(&x, &y);
1123
1124                 if (bmp_display(addr, x, y) == 0)
1125                         return (void *)lcd_base;
1126         }
1127 #endif /* CONFIG_SPLASH_SCREEN */
1128
1129         bitmap_plot(0, 0);
1130
1131 #ifdef CONFIG_LCD_INFO
1132         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1133         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1134         lcd_show_board_info();
1135 #endif /* CONFIG_LCD_INFO */
1136
1137 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1138         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1139 #else
1140         return (void *)lcd_base;
1141 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1142 }
1143
1144 #ifdef CONFIG_SPLASHIMAGE_GUARD
1145 static int on_splashimage(const char *name, const char *value, enum env_op op,
1146         int flags)
1147 {
1148         ulong addr;
1149         int aligned;
1150
1151         if (op == env_op_delete)
1152                 return 0;
1153
1154         addr = simple_strtoul(value, NULL, 16);
1155         /* See README.displaying-bmps */
1156         aligned = (addr % 4 == 2);
1157         if (!aligned) {
1158                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1159                 return -1;
1160         }
1161
1162         return 0;
1163 }
1164
1165 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1166 #endif
1167
1168 void lcd_position_cursor(unsigned col, unsigned row)
1169 {
1170         console_col = min(col, CONSOLE_COLS - 1);
1171         console_row = min(row, CONSOLE_ROWS - 1);
1172 }
1173
1174 int lcd_get_pixel_width(void)
1175 {
1176         return panel_info.vl_col;
1177 }
1178
1179 int lcd_get_pixel_height(void)
1180 {
1181         return panel_info.vl_row;
1182 }
1183
1184 int lcd_get_screen_rows(void)
1185 {
1186         return CONSOLE_ROWS;
1187 }
1188
1189 int lcd_get_screen_columns(void)
1190 {
1191         return CONSOLE_COLS;
1192 }
1193
1194 #if defined(CONFIG_LCD_DT_SIMPLEFB)
1195 static int lcd_dt_simplefb_configure_node(void *blob, int off)
1196 {
1197         u32 stride;
1198         fdt32_t cells[2];
1199         int ret;
1200         static const char format[] =
1201 #if LCD_BPP == LCD_COLOR16
1202                 "r5g6b5";
1203 #else
1204                 "";
1205 #endif
1206
1207         if (!format[0])
1208                 return -1;
1209
1210         stride = panel_info.vl_col * 2;
1211
1212         cells[0] = cpu_to_fdt32(gd->fb_base);
1213         cells[1] = cpu_to_fdt32(stride * panel_info.vl_row);
1214         ret = fdt_setprop(blob, off, "reg", cells, sizeof(cells[0]) * 2);
1215         if (ret < 0)
1216                 return -1;
1217
1218         cells[0] = cpu_to_fdt32(panel_info.vl_col);
1219         ret = fdt_setprop(blob, off, "width", cells, sizeof(cells[0]));
1220         if (ret < 0)
1221                 return -1;
1222
1223         cells[0] = cpu_to_fdt32(panel_info.vl_row);
1224         ret = fdt_setprop(blob, off, "height", cells, sizeof(cells[0]));
1225         if (ret < 0)
1226                 return -1;
1227
1228         cells[0] = cpu_to_fdt32(stride);
1229         ret = fdt_setprop(blob, off, "stride", cells, sizeof(cells[0]));
1230         if (ret < 0)
1231                 return -1;
1232
1233         ret = fdt_setprop(blob, off, "format", format, strlen(format) + 1);
1234         if (ret < 0)
1235                 return -1;
1236
1237         ret = fdt_delprop(blob, off, "status");
1238         if (ret < 0)
1239                 return -1;
1240
1241         return 0;
1242 }
1243
1244 int lcd_dt_simplefb_add_node(void *blob)
1245 {
1246         static const char compat[] = "simple-framebuffer";
1247         static const char disabled[] = "disabled";
1248         int off, ret;
1249
1250         off = fdt_add_subnode(blob, 0, "framebuffer");
1251         if (off < 0)
1252                 return -1;
1253
1254         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
1255         if (ret < 0)
1256                 return -1;
1257
1258         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
1259         if (ret < 0)
1260                 return -1;
1261
1262         return lcd_dt_simplefb_configure_node(blob, off);
1263 }
1264
1265 int lcd_dt_simplefb_enable_existing_node(void *blob)
1266 {
1267         int off;
1268
1269         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
1270         if (off < 0)
1271                 return -1;
1272
1273         return lcd_dt_simplefb_configure_node(blob, off);
1274 }
1275 #endif