77914adbce558aca4a67607dcd3292519cf02275
[karo-tx-uboot.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  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25
26 /************************************************************************/
27 /* ** HEADER FILES                                                      */
28 /************************************************************************/
29
30 /* #define DEBUG */
31
32 #include <config.h>
33 #include <common.h>
34 #include <command.h>
35 #include <stdarg.h>
36 #include <search.h>
37 #include <env_callback.h>
38 #include <linux/types.h>
39 #include <stdio_dev.h>
40 #if defined(CONFIG_POST)
41 #include <post.h>
42 #endif
43 #include <lcd.h>
44 #include <watchdog.h>
45
46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
47         defined(CONFIG_CPU_MONAHANS)
48 #define CONFIG_CPU_PXA
49 #include <asm/byteorder.h>
50 #endif
51
52 #if defined(CONFIG_MPC823)
53 #include <lcdvideo.h>
54 #endif
55
56 #if defined(CONFIG_ATMEL_LCD)
57 #include <atmel_lcdc.h>
58 #endif
59
60 /************************************************************************/
61 /* ** FONT DATA                                                         */
62 /************************************************************************/
63 #include <video_font.h>         /* Get font data, width and height      */
64 #include <video_font_data.h>
65
66 /************************************************************************/
67 /* ** LOGO DATA                                                         */
68 /************************************************************************/
69 #ifdef CONFIG_LCD_LOGO
70 # include <bmp_logo.h>          /* Get logo data, width and height      */
71 # include <bmp_logo_data.h>
72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
73 #  error Default Color Map overlaps with Logo Color Map
74 # endif
75 #endif
76
77 #ifndef CONFIG_LCD_ALIGNMENT
78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
79 #endif
80
81 /* By default we scroll by a single line */
82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
83 #define CONFIG_CONSOLE_SCROLL_LINES 1
84 #endif
85
86 DECLARE_GLOBAL_DATA_PTR;
87
88 ulong lcd_setmem (ulong addr);
89
90 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
91 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
92 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
93
94 static int lcd_init(void *lcdbase);
95
96 static void *lcd_logo (void);
97
98 static int lcd_getbgcolor(void);
99 static void lcd_setfgcolor(int color);
100 static void lcd_setbgcolor(int color);
101
102 char lcd_is_enabled = 0;
103
104 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
105
106
107 #ifdef  NOT_USED_SO_FAR
108 static void lcd_getcolreg(ushort regno,
109                                 ushort *red, ushort *green, ushort *blue);
110 static int lcd_getfgcolor(void);
111 #endif  /* NOT_USED_SO_FAR */
112
113 /************************************************************************/
114
115 /* Flush LCD activity to the caches */
116 void lcd_sync(void)
117 {
118         /*
119          * flush_dcache_range() is declared in common.h but it seems that some
120          * architectures do not actually implement it. Is there a way to find
121          * out whether it exists? For now, ARM is safe.
122          */
123 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
124         int line_length;
125
126         if (lcd_flush_dcache)
127                 flush_dcache_range((u32)lcd_base,
128                         (u32)(lcd_base + lcd_get_size(&line_length)));
129 #endif
130 }
131
132 void lcd_set_flush_dcache(int flush)
133 {
134         lcd_flush_dcache = (flush != 0);
135 }
136
137 /*----------------------------------------------------------------------*/
138
139 static void console_scrollup(void)
140 {
141         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
142
143         /* Copy up rows ignoring those that will be overwritten */
144         memcpy(CONSOLE_ROW_FIRST,
145                lcd_console_address + CONSOLE_ROW_SIZE * rows,
146                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
147
148         /* Clear the last rows */
149         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
150                 COLOR_MASK(lcd_color_bg),
151                CONSOLE_ROW_SIZE * rows);
152
153         lcd_sync();
154         console_row -= rows;
155 }
156
157 /*----------------------------------------------------------------------*/
158
159 static inline void console_back(void)
160 {
161         if (--console_col < 0) {
162                 console_col = CONSOLE_COLS-1 ;
163                 if (--console_row < 0) {
164                         console_row = 0;
165                 }
166         }
167
168         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
169                 console_row * VIDEO_FONT_HEIGHT, ' ');
170 }
171
172 /*----------------------------------------------------------------------*/
173
174 static inline void console_newline(void)
175 {
176         ++console_row;
177         console_col = 0;
178
179         /* Check if we need to scroll the terminal */
180         if (console_row >= CONSOLE_ROWS) {
181                 /* Scroll everything up */
182                 console_scrollup();
183         } else {
184                 lcd_sync();
185         }
186 }
187
188 /*----------------------------------------------------------------------*/
189
190 void lcd_putc(const char c)
191 {
192         if (!lcd_is_enabled) {
193                 serial_putc(c);
194
195                 return;
196         }
197
198         switch (c) {
199         case '\r':
200                 console_col = 0;
201
202                 return;
203         case '\n':
204                 console_newline();
205
206                 return;
207         case '\t':      /* Tab (8 chars alignment) */
208                 console_col +=  8;
209                 console_col &= ~7;
210
211                 if (console_col >= CONSOLE_COLS)
212                         console_newline();
213
214                 return;
215         case '\b':
216                 console_back();
217
218                 return;
219         default:
220                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
221                         console_row * VIDEO_FONT_HEIGHT, c);
222                 if (++console_col >= CONSOLE_COLS)
223                         console_newline();
224         }
225 }
226
227 /*----------------------------------------------------------------------*/
228
229 void lcd_puts(const char *s)
230 {
231         if (!lcd_is_enabled) {
232                 serial_puts(s);
233
234                 return;
235         }
236
237         while (*s) {
238                 lcd_putc(*s++);
239         }
240         lcd_sync();
241 }
242
243 /*----------------------------------------------------------------------*/
244
245 void lcd_printf(const char *fmt, ...)
246 {
247         va_list args;
248         char buf[CONFIG_SYS_PBSIZE];
249
250         va_start(args, fmt);
251         vsprintf(buf, fmt, args);
252         va_end(args);
253
254         lcd_puts(buf);
255 }
256
257 /************************************************************************/
258 /* ** Low-Level Graphics Routines                                       */
259 /************************************************************************/
260
261 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
262 {
263         uchar *dest;
264         ushort row;
265
266 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
267         y += BMP_LOGO_HEIGHT;
268 #endif
269
270 #if LCD_BPP == LCD_MONOCHROME
271         ushort off  = x * (1 << LCD_BPP) % 8;
272 #endif
273
274         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
275
276         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
277                 uchar *s = str;
278                 int i;
279 #if LCD_BPP == LCD_COLOR16
280                 ushort *d = (ushort *)dest;
281 #else
282                 uchar *d = dest;
283 #endif
284
285 #if LCD_BPP == LCD_MONOCHROME
286                 uchar rest = *d & -(1 << (8-off));
287                 uchar sym;
288 #endif
289                 for (i = 0; i < count; ++i) {
290                         uchar c, bits;
291
292                         c = *s++;
293                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
294
295 #if LCD_BPP == LCD_MONOCHROME
296                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
297                                 (COLOR_MASK(lcd_color_bg) & ~bits);
298
299                         *d++ = rest | (sym >> off);
300                         rest = sym << (8-off);
301 #elif LCD_BPP == LCD_COLOR8
302                         for (c = 0; c < 8; ++c) {
303                                 *d++ = (bits & 0x80) ?
304                                                 lcd_color_fg : lcd_color_bg;
305                                 bits <<= 1;
306                         }
307 #elif LCD_BPP == LCD_COLOR16
308                         for (c = 0; c < 8; ++c) {
309                                 *d++ = (bits & 0x80) ?
310                                                 lcd_color_fg : lcd_color_bg;
311                                 bits <<= 1;
312                         }
313 #endif
314                 }
315 #if LCD_BPP == LCD_MONOCHROME
316                 *d  = rest | (*d & ((1 << (8-off)) - 1));
317 #endif
318         }
319 }
320
321 /*----------------------------------------------------------------------*/
322
323 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
324 {
325         lcd_drawchars(x, y, s, strlen((char *)s));
326 }
327
328 /*----------------------------------------------------------------------*/
329
330 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
331 {
332         lcd_drawchars(x, y, &c, 1);
333 }
334
335 /************************************************************************/
336 /**  Small utility to check that you got the colours right              */
337 /************************************************************************/
338 #ifdef LCD_TEST_PATTERN
339
340 #define N_BLK_VERT      2
341 #define N_BLK_HOR       3
342
343 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
344         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
345         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
346 };
347
348 static void test_pattern(void)
349 {
350         ushort v_max  = panel_info.vl_row;
351         ushort h_max  = panel_info.vl_col;
352         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
353         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
354         ushort v, h;
355         uchar *pix = (uchar *)lcd_base;
356
357         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
358                 h_max, v_max, h_step, v_step);
359
360         /* WARNING: Code silently assumes 8bit/pixel */
361         for (v = 0; v < v_max; ++v) {
362                 uchar iy = v / v_step;
363                 for (h = 0; h < h_max; ++h) {
364                         uchar ix = N_BLK_HOR * iy + (h/h_step);
365                         *pix++ = test_colors[ix];
366                 }
367         }
368 }
369 #endif /* LCD_TEST_PATTERN */
370
371
372 /************************************************************************/
373 /* ** GENERIC Initialization Routines                                   */
374 /************************************************************************/
375
376 int lcd_get_size(int *line_length)
377 {
378         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
379         return *line_length * panel_info.vl_row;
380 }
381
382 int drv_lcd_init (void)
383 {
384         struct stdio_dev lcddev;
385         int rc;
386
387         lcd_base = (void *)(gd->fb_base);
388
389         lcd_init(lcd_base);             /* LCD initialization */
390
391         /* Device initialization */
392         memset(&lcddev, 0, sizeof(lcddev));
393
394         strcpy(lcddev.name, "lcd");
395         lcddev.ext   = 0;                       /* No extensions */
396         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
397         lcddev.putc  = lcd_putc;                /* 'putc' function */
398         lcddev.puts  = lcd_puts;                /* 'puts' function */
399
400         rc = stdio_register (&lcddev);
401
402         return (rc == 0) ? 1 : rc;
403 }
404
405 /*----------------------------------------------------------------------*/
406 void lcd_clear(void)
407 {
408 #if LCD_BPP == LCD_MONOCHROME
409         /* Setting the palette */
410         lcd_initcolregs();
411
412 #elif LCD_BPP == LCD_COLOR8
413         /* Setting the palette */
414         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
415         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
416         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
417         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
418         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
419         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
420         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
421         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
422         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
423 #endif
424
425 #ifndef CONFIG_SYS_WHITE_ON_BLACK
426         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
427         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
428 #else
429         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
430         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
431 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
432
433 #ifdef  LCD_TEST_PATTERN
434         test_pattern();
435 #else
436         /* set framebuffer to background color */
437         memset((char *)lcd_base,
438                 COLOR_MASK(lcd_getbgcolor()),
439                 lcd_line_length*panel_info.vl_row);
440 #endif
441         /* Paint the logo and retrieve LCD base address */
442         debug("[LCD] Drawing the logo...\n");
443         lcd_console_address = lcd_logo ();
444
445         console_col = 0;
446         console_row = 0;
447         lcd_sync();
448 }
449
450 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
451                         char *const argv[])
452 {
453         lcd_clear();
454         return 0;
455 }
456
457 U_BOOT_CMD(
458         cls,    1,      1,      do_lcd_clear,
459         "clear screen",
460         ""
461 );
462
463 /*----------------------------------------------------------------------*/
464
465 static int lcd_init(void *lcdbase)
466 {
467         /* Initialize the lcd controller */
468         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
469
470         lcd_ctrl_init(lcdbase);
471         lcd_get_size(&lcd_line_length);
472         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
473         lcd_is_enabled = 1;
474         lcd_clear();
475         lcd_enable ();
476
477         /* Initialize the console */
478         console_col = 0;
479 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
480         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
481 #else
482         console_row = 1;        /* leave 1 blank line below logo */
483 #endif
484
485         return 0;
486 }
487
488
489 /************************************************************************/
490 /* ** ROM capable initialization part - needed to reserve FB memory     */
491 /************************************************************************/
492 /*
493  * This is called early in the system initialization to grab memory
494  * for the LCD controller.
495  * Returns new address for monitor, after reserving LCD buffer memory
496  *
497  * Note that this is running from ROM, so no write access to global data.
498  */
499 ulong lcd_setmem(ulong addr)
500 {
501         ulong size;
502         int line_length;
503
504         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
505                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
506
507         size = lcd_get_size(&line_length);
508
509         /* Round up to nearest full page, or MMU section if defined */
510         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
511         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
512
513         /* Allocate pages for the frame buffer. */
514         addr -= size;
515
516         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
517
518         return addr;
519 }
520
521 /*----------------------------------------------------------------------*/
522
523 static void lcd_setfgcolor(int color)
524 {
525         lcd_color_fg = color;
526 }
527
528 /*----------------------------------------------------------------------*/
529
530 static void lcd_setbgcolor(int color)
531 {
532         lcd_color_bg = color;
533 }
534
535 /*----------------------------------------------------------------------*/
536
537 #ifdef  NOT_USED_SO_FAR
538 static int lcd_getfgcolor(void)
539 {
540         return lcd_color_fg;
541 }
542 #endif  /* NOT_USED_SO_FAR */
543
544 /*----------------------------------------------------------------------*/
545
546 static int lcd_getbgcolor(void)
547 {
548         return lcd_color_bg;
549 }
550
551 /*----------------------------------------------------------------------*/
552
553 /************************************************************************/
554 /* ** Chipset depending Bitmap / Logo stuff...                          */
555 /************************************************************************/
556 static inline ushort *configuration_get_cmap(void)
557 {
558 #if defined CONFIG_CPU_PXA
559         struct pxafb_info *fbi = &panel_info.pxa;
560         return (ushort *)fbi->palette;
561 #elif defined(CONFIG_MPC823)
562         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
563         cpm8xx_t *cp = &(immr->im_cpm);
564         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
565 #elif defined(CONFIG_ATMEL_LCD)
566         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
567 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
568         return panel_info.cmap;
569 #else
570 #if defined(CONFIG_LCD_LOGO)
571         return bmp_logo_palette;
572 #else
573         return NULL;
574 #endif
575 #endif
576 }
577
578 #ifdef CONFIG_LCD_LOGO
579 void bitmap_plot(int x, int y)
580 {
581 #ifdef CONFIG_ATMEL_LCD
582         uint *cmap = (uint *)bmp_logo_palette;
583 #else
584         ushort *cmap = (ushort *)bmp_logo_palette;
585 #endif
586         ushort i, j;
587         uchar *bmap;
588         uchar *fb;
589         ushort *fb16;
590 #if defined(CONFIG_MPC823)
591         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
592         cpm8xx_t *cp = &(immr->im_cpm);
593 #endif
594
595         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
596                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
597                 ARRAY_SIZE(bmp_logo_palette));
598
599         bmap = &bmp_logo_bitmap[0];
600         fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
601
602         if (NBITS(panel_info.vl_bpix) < 12) {
603                 /* Leave room for default color map
604                  * default case: generic system with no cmap (most likely 16bpp)
605                  * cmap was set to the source palette, so no change is done.
606                  * This avoids even more ifdefs in the next stanza
607                  */
608 #if defined(CONFIG_MPC823)
609                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
610 #elif defined(CONFIG_ATMEL_LCD)
611                 cmap = (uint *)configuration_get_cmap();
612 #else
613                 cmap = configuration_get_cmap();
614 #endif
615
616                 WATCHDOG_RESET();
617
618                 /* Set color map */
619                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
620                         ushort colreg = bmp_logo_palette[i];
621 #ifdef CONFIG_ATMEL_LCD
622                         uint lut_entry;
623 #ifdef CONFIG_ATMEL_LCD_BGR555
624                         lut_entry = ((colreg & 0x000F) << 11) |
625                                         ((colreg & 0x00F0) <<  2) |
626                                         ((colreg & 0x0F00) >>  7);
627 #else /* CONFIG_ATMEL_LCD_RGB565 */
628                         lut_entry = ((colreg & 0x000F) << 1) |
629                                         ((colreg & 0x00F0) << 3) |
630                                         ((colreg & 0x0F00) << 4);
631 #endif
632                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
633                         cmap++;
634 #else /* !CONFIG_ATMEL_LCD */
635 #ifdef  CONFIG_SYS_INVERT_COLORS
636                         *cmap++ = 0xffff - colreg;
637 #else
638                         *cmap++ = colreg;
639 #endif
640 #endif /* CONFIG_ATMEL_LCD */
641                 }
642
643                 WATCHDOG_RESET();
644
645                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
646                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
647                         bmap += BMP_LOGO_WIDTH;
648                         fb   += panel_info.vl_col;
649                 }
650         }
651         else { /* true color mode */
652                 u16 col16;
653                 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
654                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
655                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
656                                 col16 = bmp_logo_palette[(bmap[j]-16)];
657                                 fb16[j] =
658                                         ((col16 & 0x000F) << 1) |
659                                         ((col16 & 0x00F0) << 3) |
660                                         ((col16 & 0x0F00) << 4);
661                                 }
662                         bmap += BMP_LOGO_WIDTH;
663                         fb16 += panel_info.vl_col;
664                 }
665         }
666
667         WATCHDOG_RESET();
668         lcd_sync();
669 }
670 #else
671 static inline void bitmap_plot(int x, int y) {}
672 #endif /* CONFIG_LCD_LOGO */
673
674 /*----------------------------------------------------------------------*/
675 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
676 /*
677  * Display the BMP file located at address bmp_image.
678  * Only uncompressed.
679  */
680
681 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
682 #define BMP_ALIGN_CENTER        0x7FFF
683
684 static void splash_align_axis(int *axis, unsigned long panel_size,
685                                         unsigned long picture_size)
686 {
687         unsigned long panel_picture_delta = panel_size - picture_size;
688         unsigned long axis_alignment;
689
690         if (*axis == BMP_ALIGN_CENTER)
691                 axis_alignment = panel_picture_delta / 2;
692         else if (*axis < 0)
693                 axis_alignment = panel_picture_delta + *axis + 1;
694         else
695                 return;
696
697         *axis = max(0, axis_alignment);
698 }
699 #endif
700
701
702 #ifdef CONFIG_LCD_BMP_RLE8
703
704 #define BMP_RLE8_ESCAPE         0
705 #define BMP_RLE8_EOL            0
706 #define BMP_RLE8_EOBMP          1
707 #define BMP_RLE8_DELTA          2
708
709 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
710                                   int cnt)
711 {
712         while (cnt > 0) {
713                 *(*fbp)++ = cmap[*bmap++];
714                 cnt--;
715         }
716 }
717
718 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
719 {
720         ushort *fb = *fbp;
721         int cnt_8copy = cnt >> 3;
722
723         cnt -= cnt_8copy << 3;
724         while (cnt_8copy > 0) {
725                 *fb++ = c;
726                 *fb++ = c;
727                 *fb++ = c;
728                 *fb++ = c;
729                 *fb++ = c;
730                 *fb++ = c;
731                 *fb++ = c;
732                 *fb++ = c;
733                 cnt_8copy--;
734         }
735         while (cnt > 0) {
736                 *fb++ = c;
737                 cnt--;
738         }
739         (*fbp) = fb;
740 }
741
742 /*
743  * Do not call this function directly, must be called from
744  * lcd_display_bitmap.
745  */
746 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
747                                     int x_off, int y_off)
748 {
749         uchar *bmap;
750         ulong width, height;
751         ulong cnt, runlen;
752         int x, y;
753         int decode = 1;
754
755         width = le32_to_cpu(bmp->header.width);
756         height = le32_to_cpu(bmp->header.height);
757         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
758
759         x = 0;
760         y = height - 1;
761
762         while (decode) {
763                 if (bmap[0] == BMP_RLE8_ESCAPE) {
764                         switch (bmap[1]) {
765                         case BMP_RLE8_EOL:
766                                 /* end of line */
767                                 bmap += 2;
768                                 x = 0;
769                                 y--;
770                                 /* 16bpix, 2-byte per pixel, width should *2 */
771                                 fb -= (width * 2 + lcd_line_length);
772                                 break;
773                         case BMP_RLE8_EOBMP:
774                                 /* end of bitmap */
775                                 decode = 0;
776                                 break;
777                         case BMP_RLE8_DELTA:
778                                 /* delta run */
779                                 x += bmap[2];
780                                 y -= bmap[3];
781                                 /* 16bpix, 2-byte per pixel, x should *2 */
782                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
783                                         * lcd_line_length + (x + x_off) * 2);
784                                 bmap += 4;
785                                 break;
786                         default:
787                                 /* unencoded run */
788                                 runlen = bmap[1];
789                                 bmap += 2;
790                                 if (y < height) {
791                                         if (x < width) {
792                                                 if (x + runlen > width)
793                                                         cnt = width - x;
794                                                 else
795                                                         cnt = runlen;
796                                                 draw_unencoded_bitmap(
797                                                         (ushort **)&fb,
798                                                         bmap, cmap, cnt);
799                                         }
800                                         x += runlen;
801                                 }
802                                 bmap += runlen;
803                                 if (runlen & 1)
804                                         bmap++;
805                         }
806                 } else {
807                         /* encoded run */
808                         if (y < height) {
809                                 runlen = bmap[0];
810                                 if (x < width) {
811                                         /* aggregate the same code */
812                                         while (bmap[0] == 0xff &&
813                                                bmap[2] != BMP_RLE8_ESCAPE &&
814                                                bmap[1] == bmap[3]) {
815                                                 runlen += bmap[2];
816                                                 bmap += 2;
817                                         }
818                                         if (x + runlen > width)
819                                                 cnt = width - x;
820                                         else
821                                                 cnt = runlen;
822                                         draw_encoded_bitmap((ushort **)&fb,
823                                                 cmap[bmap[1]], cnt);
824                                 }
825                                 x += runlen;
826                         }
827                         bmap += 2;
828                 }
829         }
830 }
831 #endif
832
833 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
834 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
835 #else
836 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
837 #endif
838
839 #if defined(CONFIG_BMP_16BPP)
840 #if defined(CONFIG_ATMEL_LCD_BGR555)
841 static inline void fb_put_word(uchar **fb, uchar **from)
842 {
843         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
844         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
845         *from += 2;
846 }
847 #else
848 static inline void fb_put_word(uchar **fb, uchar **from)
849 {
850         *(*fb)++ = *(*from)++;
851         *(*fb)++ = *(*from)++;
852 }
853 #endif
854 #endif /* CONFIG_BMP_16BPP */
855
856 int lcd_display_bitmap(ulong bmp_image, int x, int y)
857 {
858 #if !defined(CONFIG_MCC200)
859         ushort *cmap = NULL;
860 #endif
861         ushort *cmap_base = NULL;
862         ushort i, j;
863         uchar *fb;
864         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
865         uchar *bmap;
866         ushort padded_width;
867         unsigned long width, height, byte_width;
868         unsigned long pwidth = panel_info.vl_col;
869         unsigned colors, bpix, bmp_bpix;
870
871         if (!bmp || !((bmp->header.signature[0] == 'B') &&
872                 (bmp->header.signature[1] == 'M'))) {
873                 printf("Error: no valid bmp image at %lx\n", bmp_image);
874
875                 return 1;
876         }
877
878         width = le32_to_cpu(bmp->header.width);
879         height = le32_to_cpu(bmp->header.height);
880         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
881         colors = 1 << bmp_bpix;
882
883         bpix = NBITS(panel_info.vl_bpix);
884
885         if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
886                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
887                         bpix, bmp_bpix);
888
889                 return 1;
890         }
891
892         /* We support displaying 8bpp BMPs on 16bpp LCDs */
893         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
894                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
895                         bpix,
896                         le16_to_cpu(bmp->header.bit_count));
897
898                 return 1;
899         }
900
901         debug("Display-bmp: %d x %d  with %d colors\n",
902                 (int)width, (int)height, (int)colors);
903
904 #if !defined(CONFIG_MCC200)
905         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
906         if (bmp_bpix == 8) {
907                 cmap = configuration_get_cmap();
908                 cmap_base = cmap;
909
910                 /* Set color map */
911                 for (i = 0; i < colors; ++i) {
912                         bmp_color_table_entry_t cte = bmp->color_table[i];
913 #if !defined(CONFIG_ATMEL_LCD)
914                         ushort colreg =
915                                 ( ((cte.red)   << 8) & 0xf800) |
916                                 ( ((cte.green) << 3) & 0x07e0) |
917                                 ( ((cte.blue)  >> 3) & 0x001f) ;
918 #ifdef CONFIG_SYS_INVERT_COLORS
919                         *cmap = 0xffff - colreg;
920 #else
921                         *cmap = colreg;
922 #endif
923 #if defined(CONFIG_MPC823)
924                         cmap--;
925 #else
926                         cmap++;
927 #endif
928 #else /* CONFIG_ATMEL_LCD */
929                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
930 #endif
931                 }
932         }
933 #endif
934
935         /*
936          *  BMP format for Monochrome assumes that the state of a
937          * pixel is described on a per Bit basis, not per Byte.
938          *  So, in case of Monochrome BMP we should align widths
939          * on a byte boundary and convert them from Bit to Byte
940          * units.
941          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
942          * their own ways, so make the converting to be MCC200
943          * specific.
944          */
945 #if defined(CONFIG_MCC200)
946         if (bpix == 1) {
947                 width = ((width + 7) & ~7) >> 3;
948                 x     = ((x + 7) & ~7) >> 3;
949                 pwidth= ((pwidth + 7) & ~7) >> 3;
950         }
951 #endif
952
953         padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
954
955 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
956         splash_align_axis(&x, pwidth, width);
957         splash_align_axis(&y, panel_info.vl_row, height);
958 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
959
960         if ((x + width) > pwidth)
961                 width = pwidth - x;
962         if ((y + height) > panel_info.vl_row)
963                 height = panel_info.vl_row - y;
964
965         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
966         fb   = (uchar *) (lcd_base +
967                 (y + height - 1) * lcd_line_length + x * bpix / 8);
968
969         switch (bmp_bpix) {
970         case 1: /* pass through */
971         case 8:
972 #ifdef CONFIG_LCD_BMP_RLE8
973                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
974                         if (bpix != 16) {
975                                 /* TODO implement render code for bpix != 16 */
976                                 printf("Error: only support 16 bpix");
977                                 return 1;
978                         }
979                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
980                         break;
981                 }
982 #endif
983
984                 if (bpix != 16)
985                         byte_width = width;
986                 else
987                         byte_width = width * 2;
988
989                 for (i = 0; i < height; ++i) {
990                         WATCHDOG_RESET();
991                         for (j = 0; j < width; j++) {
992                                 if (bpix != 16) {
993                                         FB_PUT_BYTE(fb, bmap);
994                                 } else {
995                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
996                                         fb += sizeof(uint16_t) / sizeof(*fb);
997                                 }
998                         }
999                         bmap += (padded_width - width);
1000                         fb   -= (byte_width + lcd_line_length);
1001                 }
1002                 break;
1003
1004 #if defined(CONFIG_BMP_16BPP)
1005         case 16:
1006                 for (i = 0; i < height; ++i) {
1007                         WATCHDOG_RESET();
1008                         for (j = 0; j < width; j++)
1009                                 fb_put_word(&fb, &bmap);
1010
1011                         bmap += (padded_width - width) * 2;
1012                         fb   -= (width * 2 + lcd_line_length);
1013                 }
1014                 break;
1015 #endif /* CONFIG_BMP_16BPP */
1016
1017 #if defined(CONFIG_BMP_32BPP)
1018         case 32:
1019                 for (i = 0; i < height; ++i) {
1020                         for (j = 0; j < width; j++) {
1021                                 *(fb++) = *(bmap++);
1022                                 *(fb++) = *(bmap++);
1023                                 *(fb++) = *(bmap++);
1024                                 *(fb++) = *(bmap++);
1025                         }
1026                         fb  -= (lcd_line_length + width * (bpix / 8));
1027                 }
1028                 break;
1029 #endif /* CONFIG_BMP_32BPP */
1030         default:
1031                 break;
1032         };
1033
1034         lcd_sync();
1035         return 0;
1036 }
1037 #endif
1038
1039 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1040 static inline int splash_screen_prepare(void)
1041 {
1042         return board_splash_screen_prepare();
1043 }
1044 #else
1045 static inline int splash_screen_prepare(void)
1046 {
1047         return 0;
1048 }
1049 #endif
1050
1051 static void *lcd_logo(void)
1052 {
1053 #ifdef CONFIG_SPLASH_SCREEN
1054         char *s;
1055         ulong addr;
1056         static int do_splash = 1;
1057
1058         if (do_splash && (s = getenv("splashimage")) != NULL) {
1059                 int x = 0, y = 0;
1060                 do_splash = 0;
1061
1062                 if (splash_screen_prepare())
1063                         return (void *)gd->fb_base;
1064
1065                 addr = simple_strtoul (s, NULL, 16);
1066 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1067                 s = getenv("splashpos");
1068                 if (s != NULL) {
1069                         if (s[0] == 'm')
1070                                 x = BMP_ALIGN_CENTER;
1071                         else
1072                                 x = simple_strtol(s, NULL, 0);
1073
1074                         s = strchr(s + 1, ',');
1075                         if (s != NULL) {
1076                                 if (s[1] == 'm')
1077                                         y = BMP_ALIGN_CENTER;
1078                                 else
1079                                         y = simple_strtol (s + 1, NULL, 0);
1080                         }
1081                 }
1082 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1083
1084                 if (bmp_display(addr, x, y) == 0)
1085                         return (void *)lcd_base;
1086         }
1087 #endif /* CONFIG_SPLASH_SCREEN */
1088
1089         bitmap_plot(0, 0);
1090
1091 #ifdef CONFIG_LCD_INFO
1092         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1093         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1094         lcd_show_board_info();
1095 #endif /* CONFIG_LCD_INFO */
1096
1097 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1098         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1099 #else
1100         return (void *)lcd_base;
1101 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
1102 }
1103
1104 #ifdef CONFIG_SPLASHIMAGE_GUARD
1105 static int on_splashimage(const char *name, const char *value, enum env_op op,
1106         int flags)
1107 {
1108         ulong addr;
1109         int aligned;
1110
1111         if (op == env_op_delete)
1112                 return 0;
1113
1114         addr = simple_strtoul(value, NULL, 16);
1115         /* See README.displaying-bmps */
1116         aligned = (addr % 4 == 2);
1117         if (!aligned) {
1118                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1119                 return -1;
1120         }
1121
1122         return 0;
1123 }
1124
1125 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1126 #endif
1127
1128 void lcd_position_cursor(unsigned col, unsigned row)
1129 {
1130         console_col = min(col, CONSOLE_COLS - 1);
1131         console_row = min(row, CONSOLE_ROWS - 1);
1132 }
1133
1134 int lcd_get_pixel_width(void)
1135 {
1136         return panel_info.vl_col;
1137 }
1138
1139 int lcd_get_pixel_height(void)
1140 {
1141         return panel_info.vl_row;
1142 }
1143
1144 int lcd_get_screen_rows(void)
1145 {
1146         return CONSOLE_ROWS;
1147 }
1148
1149 int lcd_get_screen_columns(void)
1150 {
1151         return CONSOLE_COLS;
1152 }
1153
1154 /************************************************************************/
1155 /************************************************************************/