summaryrefslogtreecommitdiff
path: root/common/lcd.c
blob: 504b8f6684ef0e4d80233426b6675a86c4a2aad9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
/*
 * Common LCD routines for supported CPUs
 *
 * (C) Copyright 2001-2002
 * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

/************************************************************************/
/* ** HEADER FILES							*/
/************************************************************************/

/* #define DEBUG */

#include <config.h>
#include <common.h>
#include <command.h>
#include <stdarg.h>
#include <linux/types.h>
#include <stdio_dev.h>
#if defined(CONFIG_POST)
#include <post.h>
#endif
#include <lcd.h>
#include <watchdog.h>

#if defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
#include <asm/byteorder.h>
#endif

#if defined(CONFIG_MPC823)
#include <lcdvideo.h>
#endif

#if defined(CONFIG_ATMEL_LCD)
#include <atmel_lcdc.h>
#endif

/************************************************************************/
/* ** FONT DATA								*/
/************************************************************************/
#include <video_font.h>		/* Get font data, width and height	*/

/************************************************************************/
/* ** LOGO DATA								*/
/************************************************************************/
#ifdef CONFIG_LCD_LOGO
# include <bmp_logo.h>		/* Get logo data, width and height	*/
# include <bmp_logo_data.h>
# if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
#  error Default Color Map overlaps with Logo Color Map
# endif
#endif

DECLARE_GLOBAL_DATA_PTR;

ulong lcd_setmem (ulong addr);

static void lcd_drawchars (ushort x, ushort y, uchar *str, int count);
static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
static inline void lcd_putc_xy (ushort x, ushort y, uchar  c);

static int lcd_init (void *lcdbase);

static void *lcd_logo (void);

static int lcd_getbgcolor (void);
static void lcd_setfgcolor (int color);
static void lcd_setbgcolor (int color);

char lcd_is_enabled = 0;

#ifdef	NOT_USED_SO_FAR
static void lcd_getcolreg (ushort regno,
				ushort *red, ushort *green, ushort *blue);
static int lcd_getfgcolor (void);
#endif	/* NOT_USED_SO_FAR */

/************************************************************************/

/*----------------------------------------------------------------------*/

static void console_scrollup (void)
{
	/* Copy up rows ignoring the first one */
	memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);

	/* Clear the last one */
	memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
}

/*----------------------------------------------------------------------*/

static inline void console_back (void)
{
	if (--console_col < 0) {
		console_col = CONSOLE_COLS-1 ;
		if (--console_row < 0) {
			console_row = 0;
		}
	}

	lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
		     console_row * VIDEO_FONT_HEIGHT,
		     ' ');
}

/*----------------------------------------------------------------------*/

static inline void console_newline (void)
{
	++console_row;
	console_col = 0;

	/* Check if we need to scroll the terminal */
	if (console_row >= CONSOLE_ROWS) {
		/* Scroll everything up */
		console_scrollup () ;
		--console_row;
	}
}

/*----------------------------------------------------------------------*/

void lcd_putc (const char c)
{
	if (!lcd_is_enabled) {
		serial_putc(c);
		return;
	}

	switch (c) {
	case '\r':	console_col = 0;
			return;

	case '\n':	console_newline();
			return;

	case '\t':	/* Tab (8 chars alignment) */
			console_col +=  8;
			console_col &= ~7;

			if (console_col >= CONSOLE_COLS) {
				console_newline();
			}
			return;

	case '\b':	console_back();
			return;

	default:	lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
				     console_row * VIDEO_FONT_HEIGHT,
				     c);
			if (++console_col >= CONSOLE_COLS) {
				console_newline();
			}
			return;
	}
	/* NOTREACHED */
}

/*----------------------------------------------------------------------*/

void lcd_puts (const char *s)
{
	if (!lcd_is_enabled) {
		serial_puts (s);
		return;
	}

	while (*s) {
		lcd_putc (*s++);
	}
}

/*----------------------------------------------------------------------*/

void lcd_printf(const char *fmt, ...)
{
	va_list args;
	char buf[CONFIG_SYS_PBSIZE];

	va_start(args, fmt);
	vsprintf(buf, fmt, args);
	va_end(args);

	lcd_puts(buf);
}

/************************************************************************/
/* ** Low-Level Graphics Routines					*/
/************************************************************************/

static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
{
	uchar *dest;
	ushort row;

#if LCD_BPP == LCD_MONOCHROME
	ushort off  = x * (1 << LCD_BPP) % 8;
#endif

	dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);

	for (row=0;  row < VIDEO_FONT_HEIGHT;  ++row, dest += lcd_line_length)  {
		uchar *s = str;
		int i;
#if LCD_BPP == LCD_COLOR16
		ushort *d = (ushort *)dest;
#else
		uchar *d = dest;
#endif

#if LCD_BPP == LCD_MONOCHROME
		uchar rest = *d & -(1 << (8-off));
		uchar sym;
#endif
		for (i=0; i<count; ++i) {
			uchar c, bits;

			c = *s++;
			bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];

#if LCD_BPP == LCD_MONOCHROME
			sym  = (COLOR_MASK(lcd_color_fg) & bits) |
			       (COLOR_MASK(lcd_color_bg) & ~bits);

			*d++ = rest | (sym >> off);
			rest = sym << (8-off);
#elif LCD_BPP == LCD_COLOR8
			for (c=0; c<8; ++c) {
				*d++ = (bits & 0x80) ?
						lcd_color_fg : lcd_color_bg;
				bits <<= 1;
			}
#elif LCD_BPP == LCD_COLOR16
			for (c=0; c<8; ++c) {
				*d++ = (bits & 0x80) ?
						lcd_color_fg : lcd_color_bg;
				bits <<= 1;
			}
#endif
		}
#if LCD_BPP == LCD_MONOCHROME
		*d  = rest | (*d & ((1 << (8-off)) - 1));
#endif
	}
}

/*----------------------------------------------------------------------*/

static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
{
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
	lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen ((char *)s));
#else
	lcd_drawchars (x, y, s, strlen ((char *)s));
#endif
}

/*----------------------------------------------------------------------*/

static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
{
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
	lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
#else
	lcd_drawchars (x, y, &c, 1);
#endif
}

/************************************************************************/
/**  Small utility to check that you got the colours right		*/
/************************************************************************/
#ifdef LCD_TEST_PATTERN

#define	N_BLK_VERT	2
#define	N_BLK_HOR	3

static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
	CONSOLE_COLOR_RED,	CONSOLE_COLOR_GREEN,	CONSOLE_COLOR_YELLOW,
	CONSOLE_COLOR_BLUE,	CONSOLE_COLOR_MAGENTA,	CONSOLE_COLOR_CYAN,
};

static void test_pattern (void)
{
	ushort v_max  = panel_info.vl_row;
	ushort h_max  = panel_info.vl_col;
	ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
	ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
	ushort v, h;
	uchar *pix = (uchar *)lcd_base;

	printf ("[LCD] Test Pattern: %d x %d [%d x %d]\n",
		h_max, v_max, h_step, v_step);

	/* WARNING: Code silently assumes 8bit/pixel */
	for (v=0; v<v_max; ++v) {
		uchar iy = v / v_step;
		for (h=0; h<h_max; ++h) {
			uchar ix = N_BLK_HOR * iy + (h/h_step);
			*pix++ = test_colors[ix];
		}
	}
}
#endif /* LCD_TEST_PATTERN */


/************************************************************************/
/* ** GENERIC Initialization Routines					*/
/************************************************************************/

int drv_lcd_init (void)
{
	struct stdio_dev lcddev;
	int rc;

	lcd_base = (void *)(gd->fb_base);

	lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;

	lcd_init (lcd_base);		/* LCD initialization */

	/* Device initialization */
	memset (&lcddev, 0, sizeof (lcddev));

	strcpy (lcddev.name, "lcd");
	lcddev.ext   = 0;			/* No extensions */
	lcddev.flags = DEV_FLAGS_OUTPUT;	/* Output only */
	lcddev.putc  = lcd_putc;		/* 'putc' function */
	lcddev.puts  = lcd_puts;		/* 'puts' function */

	rc = stdio_register (&lcddev);

	return (rc == 0) ? 1 : rc;
}

/*----------------------------------------------------------------------*/
static
int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	lcd_clear();
	return 0;
}

void lcd_clear(void)
{
#if LCD_BPP == LCD_MONOCHROME
	/* Setting the palette */
	lcd_initcolregs();

#elif LCD_BPP == LCD_COLOR8
	/* Setting the palette */
	lcd_setcolreg  (CONSOLE_COLOR_BLACK,       0,    0,    0);
	lcd_setcolreg  (CONSOLE_COLOR_RED,	0xFF,    0,    0);
	lcd_setcolreg  (CONSOLE_COLOR_GREEN,       0, 0xFF,    0);
	lcd_setcolreg  (CONSOLE_COLOR_YELLOW,	0xFF, 0xFF,    0);
	lcd_setcolreg  (CONSOLE_COLOR_BLUE,        0,    0, 0xFF);
	lcd_setcolreg  (CONSOLE_COLOR_MAGENTA,	0xFF,    0, 0xFF);
	lcd_setcolreg  (CONSOLE_COLOR_CYAN,	   0, 0xFF, 0xFF);
	lcd_setcolreg  (CONSOLE_COLOR_GREY,	0xAA, 0xAA, 0xAA);
	lcd_setcolreg  (CONSOLE_COLOR_WHITE,	0xFF, 0xFF, 0xFF);
#endif

#ifndef CONFIG_SYS_WHITE_ON_BLACK
	lcd_setfgcolor (CONSOLE_COLOR_BLACK);
	lcd_setbgcolor (CONSOLE_COLOR_WHITE);
#else
	lcd_setfgcolor (CONSOLE_COLOR_WHITE);
	lcd_setbgcolor (CONSOLE_COLOR_BLACK);
#endif	/* CONFIG_SYS_WHITE_ON_BLACK */

#ifdef	LCD_TEST_PATTERN
	test_pattern();
#else
	/* set framebuffer to background color */
	memset ((char *)lcd_base,
		COLOR_MASK(lcd_getbgcolor()),
		lcd_line_length*panel_info.vl_row);
#endif
	/* Paint the logo and retrieve LCD base address */
	debug ("[LCD] Drawing the logo...\n");
	lcd_console_address = lcd_logo ();

	console_col = 0;
	console_row = 0;
}

U_BOOT_CMD(
	cls,	1,	1,	do_lcd_clear,
	"clear screen",
	""
);

/*----------------------------------------------------------------------*/

static int lcd_init (void *lcdbase)
{
	/* Initialize the lcd controller */
	debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);

	lcd_ctrl_init (lcdbase);
	lcd_is_enabled = 1;
	lcd_clear();
	lcd_enable ();

	/* Initialize the console */
	console_col = 0;
#ifdef CONFIG_LCD_INFO_BELOW_LOGO
	console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
#else
	console_row = 1;	/* leave 1 blank line below logo */
#endif

	return 0;
}


/************************************************************************/
/* ** ROM capable initialization part - needed to reserve FB memory	*/
/************************************************************************/
/*
 * This is called early in the system initialization to grab memory
 * for the LCD controller.
 * Returns new address for monitor, after reserving LCD buffer memory
 *
 * Note that this is running from ROM, so no write access to global data.
 */
ulong lcd_setmem (ulong addr)
{
	ulong size;
	int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;

	debug ("LCD panel info: %d x %d, %d bit/pix\n",
		panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );

	size = line_length * panel_info.vl_row;

	/* Round up to nearest full page */
	size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);

	/* Allocate pages for the frame buffer. */
	addr -= size;

	debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);

	return (addr);
}

/*----------------------------------------------------------------------*/

static void lcd_setfgcolor (int color)
{
	lcd_color_fg = color;
}

/*----------------------------------------------------------------------*/

static void lcd_setbgcolor (int color)
{
	lcd_color_bg = color;
}

/*----------------------------------------------------------------------*/

#ifdef	NOT_USED_SO_FAR
static int lcd_getfgcolor (void)
{
	return lcd_color_fg;
}
#endif	/* NOT_USED_SO_FAR */

/*----------------------------------------------------------------------*/

static int lcd_getbgcolor (void)
{
	return lcd_color_bg;
}

/*----------------------------------------------------------------------*/

/************************************************************************/
/* ** Chipset depending Bitmap / Logo stuff...                          */
/************************************************************************/
#ifdef CONFIG_LCD_LOGO
void bitmap_plot (int x, int y)
{
#ifdef CONFIG_ATMEL_LCD
	uint *cmap;
#else
	ushort *cmap;
#endif
	ushort i, j;
	uchar *bmap;
	uchar *fb;
	ushort *fb16;
#if defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
	struct pxafb_info *fbi = &panel_info.pxa;
#elif defined(CONFIG_MPC823)
	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
	volatile cpm8xx_t *cp = &(immr->im_cpm);
#endif

	debug ("Logo: width %d  height %d  colors %d  cmap %d\n",
		BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
		(int)(sizeof(bmp_logo_palette)/(sizeof(ushort))));

	bmap = &bmp_logo_bitmap[0];
	fb   = (uchar *)(lcd_base + y * lcd_line_length + x);

	if (NBITS(panel_info.vl_bpix) < 12) {
		/* Leave room for default color map */
#if defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
		cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
		cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
#elif defined(CONFIG_ATMEL_LCD)
		cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
#else
		/*
		 * default case: generic system with no cmap (most likely 16bpp)
		 * We set cmap to the source palette, so no change is done.
		 * This avoids even more ifdef in the next stanza
		 */
		cmap = bmp_logo_palette;
#endif

		WATCHDOG_RESET();

		/* Set color map */
		for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
			ushort colreg = bmp_logo_palette[i];
#ifdef CONFIG_ATMEL_LCD
			uint lut_entry;
#ifdef CONFIG_ATMEL_LCD_BGR555
			lut_entry = ((colreg & 0x000F) << 11) |
				    ((colreg & 0x00F0) <<  2) |
				    ((colreg & 0x0F00) >>  7);
#else /* CONFIG_ATMEL_LCD_RGB565 */
			lut_entry = ((colreg & 0x000F) << 1) |
				    ((colreg & 0x00F0) << 3) |
				    ((colreg & 0x0F00) << 4);
#endif
			*(cmap + BMP_LOGO_OFFSET) = lut_entry;
			cmap++;
#else /* !CONFIG_ATMEL_LCD */
#ifdef  CONFIG_SYS_INVERT_COLORS
			*cmap++ = 0xffff - colreg;
#else
			*cmap++ = colreg;
#endif
#endif /* CONFIG_ATMEL_LCD */
		}

		WATCHDOG_RESET();

		for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
			memcpy (fb, bmap, BMP_LOGO_WIDTH);
			bmap += BMP_LOGO_WIDTH;
			fb   += panel_info.vl_col;
		}
	}
	else { /* true color mode */
		u16 col16;
		fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
		for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
			for (j=0; j<BMP_LOGO_WIDTH; j++) {
				col16 = bmp_logo_palette[(bmap[j]-16)];
				fb16[j] =
					((col16 & 0x000F) << 1) |
					((col16 & 0x00F0) << 3) |
					((col16 & 0x0F00) << 4);
				}
			bmap += BMP_LOGO_WIDTH;
			fb16 += panel_info.vl_col;
		}
	}

	WATCHDOG_RESET();
}
#endif /* CONFIG_LCD_LOGO */

/*----------------------------------------------------------------------*/
#if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
/*
 * Display the BMP file located at address bmp_image.
 * Only uncompressed.
 */

#ifdef CONFIG_SPLASH_SCREEN_ALIGN
#define BMP_ALIGN_CENTER	0x7FFF
#endif

int lcd_display_bitmap(ulong bmp_image, int x, int y)
{
#if !defined(CONFIG_MCC200)
	ushort *cmap = NULL;
#endif
	ushort *cmap_base = NULL;
	ushort i, j;
	uchar *fb;
	bmp_image_t *bmp=(bmp_image_t *)bmp_image;
	uchar *bmap;
	ushort padded_line;
	unsigned long width, height, byte_width;
	unsigned long pwidth = panel_info.vl_col;
	unsigned colors, bpix, bmp_bpix;
#if defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
	struct pxafb_info *fbi = &panel_info.pxa;
#elif defined(CONFIG_MPC823)
	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
	volatile cpm8xx_t *cp = &(immr->im_cpm);
#endif

	if (!((bmp->header.signature[0]=='B') &&
		(bmp->header.signature[1]=='M'))) {
		printf ("Error: no valid bmp image at %lx\n", bmp_image);
		return 1;
	}

	width = le32_to_cpu (bmp->header.width);
	height = le32_to_cpu (bmp->header.height);
	bmp_bpix = le16_to_cpu(bmp->header.bit_count);
	colors = 1 << bmp_bpix;

	bpix = NBITS(panel_info.vl_bpix);

	if ((bpix != 1) && (bpix != 8) && (bpix != 16)) {
		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
			bpix, bmp_bpix);
		return 1;
	}

	/* We support displaying 8bpp BMPs on 16bpp LCDs */
	if (bpix != bmp_bpix && (bmp_bpix != 8 || bpix != 16)) {
		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
			bpix,
			le16_to_cpu(bmp->header.bit_count));
		return 1;
	}

	debug ("Display-bmp: %d x %d  with %d colors\n",
		(int)width, (int)height, (int)colors);

#if !defined(CONFIG_MCC200)
	/* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
	if (bmp_bpix == 8) {
#if defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
		cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
		cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
#elif !defined(CONFIG_ATMEL_LCD)
		cmap = panel_info.cmap;
#endif

		cmap_base = cmap;

		/* Set color map */
		for (i=0; i<colors; ++i) {
			bmp_color_table_entry_t cte = bmp->color_table[i];
#if !defined(CONFIG_ATMEL_LCD)
			ushort colreg =
				( ((cte.red)   << 8) & 0xf800) |
				( ((cte.green) << 3) & 0x07e0) |
				( ((cte.blue)  >> 3) & 0x001f) ;
#ifdef CONFIG_SYS_INVERT_COLORS
			*cmap = 0xffff - colreg;
#else
			*cmap = colreg;
#endif
#if defined(CONFIG_MPC823)
			cmap--;
#else
			cmap++;
#endif
#else /* CONFIG_ATMEL_LCD */
			lcd_setcolreg(i, cte.red, cte.green, cte.blue);
#endif
		}
	}
#endif

	/*
	 *  BMP format for Monochrome assumes that the state of a
	 * pixel is described on a per Bit basis, not per Byte.
	 *  So, in case of Monochrome BMP we should align widths
	 * on a byte boundary and convert them from Bit to Byte
	 * units.
	 *  Probably, PXA250 and MPC823 process 1bpp BMP images in
	 * their own ways, so make the converting to be MCC200
	 * specific.
	 */
#if defined(CONFIG_MCC200)
	if (bpix==1)
	{
		width = ((width + 7) & ~7) >> 3;
		x     = ((x + 7) & ~7) >> 3;
		pwidth= ((pwidth + 7) & ~7) >> 3;
	}
#endif

	padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);

#ifdef CONFIG_SPLASH_SCREEN_ALIGN
	if (x == BMP_ALIGN_CENTER)
		x = max(0, (pwidth - width) / 2);
	else if (x < 0)
		x = max(0, pwidth - width + x + 1);

	if (y == BMP_ALIGN_CENTER)
		y = max(0, (panel_info.vl_row - height) / 2);
	else if (y < 0)
		y = max(0, panel_info.vl_row - height + y + 1);
#endif /* CONFIG_SPLASH_SCREEN_ALIGN */

	if ((x + width)>pwidth)
		width = pwidth - x;
	if ((y + height)>panel_info.vl_row)
		height = panel_info.vl_row - y;

	bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
	fb   = (uchar *) (lcd_base +
		(y + height - 1) * lcd_line_length + x * bpix / 8);

	switch (bmp_bpix) {
	case 1: /* pass through */
	case 8:
		if (bpix != 16)
			byte_width = width;
		else
			byte_width = width * 2;

		for (i = 0; i < height; ++i) {
			WATCHDOG_RESET();
			for (j = 0; j < width; j++) {
				if (bpix != 16) {
#if defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS || defined(CONFIG_ATMEL_LCD)
					*(fb++) = *(bmap++);
#elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
					*(fb++) = 255 - *(bmap++);
#endif
				} else {
					*(uint16_t *)fb = cmap_base[*(bmap++)];
					fb += sizeof(uint16_t) / sizeof(*fb);
				}
			}
			bmap += (width - padded_line);
			fb   -= (byte_width + lcd_line_length);
		}
		break;

#if defined(CONFIG_BMP_16BPP)
	case 16:
		for (i = 0; i < height; ++i) {
			WATCHDOG_RESET();
			for (j = 0; j < width; j++) {
#if defined(CONFIG_ATMEL_LCD_BGR555)
				*(fb++) = ((bmap[0] & 0x1f) << 2) |
					(bmap[1] & 0x03);
				*(fb++) = (bmap[0] & 0xe0) |
					((bmap[1] & 0x7c) >> 2);
				bmap += 2;
#else
				*(fb++) = *(bmap++);
				*(fb++) = *(bmap++);
#endif
			}
			bmap += (padded_line - width) * 2;
			fb   -= (width * 2 + lcd_line_length);
		}
		break;
#endif /* CONFIG_BMP_16BPP */

	default:
		break;
	};

	return (0);
}
#endif

static void *lcd_logo (void)
{
#ifdef CONFIG_SPLASH_SCREEN
	char *s;
	ulong addr;
	static int do_splash = 1;

	if (do_splash && (s = getenv("splashimage")) != NULL) {
		int x = 0, y = 0;
		do_splash = 0;

		addr = simple_strtoul (s, NULL, 16);
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
		if ((s = getenv ("splashpos")) != NULL) {
			if (s[0] == 'm')
				x = BMP_ALIGN_CENTER;
			else
				x = simple_strtol (s, NULL, 0);

			if ((s = strchr (s + 1, ',')) != NULL) {
				if (s[1] == 'm')
					y = BMP_ALIGN_CENTER;
				else
					y = simple_strtol (s + 1, NULL, 0);
			}
		}
#endif /* CONFIG_SPLASH_SCREEN_ALIGN */

#ifdef CONFIG_VIDEO_BMP_GZIP
		bmp_image_t *bmp = (bmp_image_t *)addr;
		unsigned long len;

		if (!((bmp->header.signature[0]=='B') &&
		      (bmp->header.signature[1]=='M'))) {
			addr = (ulong)gunzip_bmp(addr, &len);
		}
#endif

		if (lcd_display_bitmap (addr, x, y) == 0) {
			return ((void *)lcd_base);
		}
	}
#endif /* CONFIG_SPLASH_SCREEN */

#ifdef CONFIG_LCD_LOGO
	bitmap_plot (0, 0);
#endif /* CONFIG_LCD_LOGO */

#ifdef CONFIG_LCD_INFO
	console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
	console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
	lcd_show_board_info();
#endif /* CONFIG_LCD_INFO */

#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
	return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
#else
	return ((void *)lcd_base);
#endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
}

/************************************************************************/
/************************************************************************/