summaryrefslogtreecommitdiff
path: root/common/lcd.c
blob: 16a0a7cea8fc95a153da45d6cdc8c24bce3e6771 (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * Common LCD routines
 *
 * (C) Copyright 2001-2002
 * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
 */

/* #define DEBUG */
#include <config.h>
#include <common.h>
#include <command.h>
#include <cpu_func.h>
#include <env_callback.h>
#include <log.h>
#include <asm/cache.h>
#include <init.h>
#include <asm/global_data.h>
#include <linux/types.h>
#include <stdio_dev.h>
#include <lcd.h>
#include <mapmem.h>
#include <watchdog.h>
#include <asm/unaligned.h>
#include <splash.h>
#include <asm/io.h>
#include <asm/unaligned.h>
#include <video_font.h>

#ifdef CONFIG_LCD_LOGO
#include <bmp_logo.h>
#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

#ifndef CONFIG_LCD_ALIGNMENT
#define CONFIG_LCD_ALIGNMENT PAGE_SIZE
#endif

#if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
	(LCD_BPP != LCD_COLOR32)
#error Unsupported LCD BPP.
#endif

DECLARE_GLOBAL_DATA_PTR;

static int lcd_init(void *lcdbase);
static void lcd_logo(void);
static void lcd_setfgcolor(int color);
static void lcd_setbgcolor(int color);

static int lcd_color_fg;
static int lcd_color_bg;
int lcd_line_length;
char lcd_is_enabled = 0;
static void *lcd_base;			/* Start of framebuffer memory	*/
static char lcd_flush_dcache;	/* 1 to flush dcache after each lcd update */

/* Flush LCD activity to the caches */
void lcd_sync(void)
{
	/*
	 * flush_dcache_range() is declared in common.h but it seems that some
	 * architectures do not actually implement it. Is there a way to find
	 * out whether it exists? For now, ARM is safe.
	 */
#if defined(CONFIG_ARM) && !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
	int line_length;

	if (lcd_flush_dcache)
		flush_dcache_range((ulong)lcd_base,
			(ulong)(lcd_base + lcd_get_size(&line_length)));
#endif
}

void lcd_set_flush_dcache(int flush)
{
	lcd_flush_dcache = (flush != 0);
}

static void lcd_stub_putc(struct stdio_dev *dev, const char c)
{
	lcd_putc(c);
}

static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
{
	lcd_puts(s);
}

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

#if LCD_BPP == LCD_COLOR8
#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,
}; /*LCD_BPP == LCD_COLOR8 */

#elif LCD_BPP == LCD_COLOR16
#define	N_BLK_VERT	2
#define	N_BLK_HOR	4

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,	CONSOLE_COLOR_GREY,	CONSOLE_COLOR_WHITE,
};
#endif /*LCD_BPP == LCD_COLOR16 */

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;
#if LCD_BPP == LCD_COLOR8
	uchar *pix = (uchar *)lcd_base;
#elif LCD_BPP == LCD_COLOR16
	ushort *pix = (ushort *)lcd_base;
#endif

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

	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 */

/*
 * With most lcd drivers the line length is set up
 * by calculating it from panel_info parameters. Some
 * drivers need to calculate the line length differently,
 * so make the function weak to allow overriding it.
 */
__weak int lcd_get_size(int *line_length)
{
	*line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
	return *line_length * panel_info.vl_row;
}

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

	lcd_base = map_sysmem(gd->fb_base, 0);

	lcd_init(lcd_base);

	/* 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_stub_putc;		/* 'putc' function */
	lcddev.puts  = lcd_stub_puts;		/* 'puts' function */

	rc = stdio_register(&lcddev);

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

void lcd_clear(void)
{
	int bg_color;
	__maybe_unused ulong addr;
	static int do_splash = 1;
#if 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);
	bg_color = CONSOLE_COLOR_WHITE;
#else
	lcd_setfgcolor(CONSOLE_COLOR_WHITE);
	lcd_setbgcolor(CONSOLE_COLOR_BLACK);
	bg_color = CONSOLE_COLOR_BLACK;
#endif	/* CONFIG_SYS_WHITE_ON_BLACK */

#ifdef	LCD_TEST_PATTERN
	test_pattern();
#else
	/* set framebuffer to background color */
#if (LCD_BPP != LCD_COLOR32)
	memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
#else
	u32 *ppix = lcd_base;
	u32 i;
	for (i = 0;
	   i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
	   i++) {
		*ppix++ = bg_color;
	}
#endif
#endif
	/* setup text-console */
	debug("[LCD] setting up console...\n");
	lcd_init_console(lcd_base,
			 panel_info.vl_col,
			 panel_info.vl_row,
			 panel_info.vl_rot);
	/* Paint the logo and retrieve LCD base address */
	debug("[LCD] Drawing the logo...\n");
	if (do_splash) {
		if (splash_display() == 0) {
			do_splash = 0;
			lcd_sync();
			return;
		}
	}

	lcd_logo();
#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
	addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
	lcd_init_console((void *)addr, panel_info.vl_col,
			 panel_info.vl_row, panel_info.vl_rot);
#endif
	lcd_sync();
}

static int lcd_init(void *lcdbase)
{
	debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
	lcd_ctrl_init(lcdbase);

	/*
	 * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
	 * the 'lcdbase' argument and uses custom lcd base address
	 * by setting up gd->fb_base. Check for this condition and fixup
	 * 'lcd_base' address.
	 */
	if (map_to_sysmem(lcdbase) != gd->fb_base)
		lcd_base = map_sysmem(gd->fb_base, 0);

	debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);

	lcd_get_size(&lcd_line_length);
	lcd_is_enabled = 1;
	lcd_clear();
	lcd_enable();

	/* Initialize the console */
	lcd_set_col(0);
#ifdef CONFIG_LCD_INFO_BELOW_LOGO
	lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
#else
	lcd_set_row(1);	/* leave 1 blank line below logo */
#endif

	return 0;
}

/*
 * 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;

	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 = lcd_get_size(&line_length);

	/* Round up to nearest full page, or MMU section if defined */
	size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
	addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);

	/* 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;
}

int lcd_getfgcolor(void)
{
	return lcd_color_fg;
}

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

int lcd_getbgcolor(void)
{
	return lcd_color_bg;
}

#ifdef CONFIG_LCD_LOGO
__weak void lcd_logo_set_cmap(void)
{
	int i;
	ushort *cmap = configuration_get_cmap();

	for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
		*cmap++ = bmp_logo_palette[i];
}

void lcd_logo_plot(int x, int y)
{
	ushort i, j;
	uchar *bmap = &bmp_logo_bitmap[0];
	unsigned bpix = NBITS(panel_info.vl_bpix);
	uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
	ushort *fb16;

	debug("Logo: width %d  height %d  colors %d\n",
	      BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);

	if (bpix < 12) {
		WATCHDOG_RESET();
		lcd_logo_set_cmap();
		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 *)fb;
		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();
	lcd_sync();
}
#else
static inline void lcd_logo_plot(int x, int y) {}
#endif /* CONFIG_LCD_LOGO */

#if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
#ifdef CONFIG_SPLASH_SCREEN_ALIGN

static void splash_align_axis(int *axis, unsigned long panel_size,
					unsigned long picture_size)
{
	unsigned long panel_picture_delta = panel_size - picture_size;
	unsigned long axis_alignment;

	if (*axis == BMP_ALIGN_CENTER)
		axis_alignment = panel_picture_delta / 2;
	else if (*axis < 0)
		axis_alignment = panel_picture_delta + *axis + 1;
	else
		return;

	*axis = max(0, (int)axis_alignment);
}
#endif

#ifdef CONFIG_LCD_BMP_RLE8
#define BMP_RLE8_ESCAPE		0
#define BMP_RLE8_EOL		0
#define BMP_RLE8_EOBMP		1
#define BMP_RLE8_DELTA		2

static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
				  int cnt)
{
	while (cnt > 0) {
		*(*fbp)++ = cmap[*bmap++];
		cnt--;
	}
}

static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
{
	ushort *fb = *fbp;
	int cnt_8copy = cnt >> 3;

	cnt -= cnt_8copy << 3;
	while (cnt_8copy > 0) {
		*fb++ = c;
		*fb++ = c;
		*fb++ = c;
		*fb++ = c;
		*fb++ = c;
		*fb++ = c;
		*fb++ = c;
		*fb++ = c;
		cnt_8copy--;
	}
	while (cnt > 0) {
		*fb++ = c;
		cnt--;
	}
	*fbp = fb;
}

/*
 * Do not call this function directly, must be called from lcd_display_bitmap.
 */
static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
				    uchar *fb, int x_off, int y_off)
{
	uchar *bmap;
	ulong width, height;
	ulong cnt, runlen;
	int x, y;
	int decode = 1;

	width = get_unaligned_le32(&bmp->header.width);
	height = get_unaligned_le32(&bmp->header.height);
	bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);

	x = 0;
	y = height - 1;

	while (decode) {
		if (bmap[0] == BMP_RLE8_ESCAPE) {
			switch (bmap[1]) {
			case BMP_RLE8_EOL:
				/* end of line */
				bmap += 2;
				x = 0;
				y--;
				/* 16bpix, 2-byte per pixel, width should *2 */
				fb -= (width * 2 + lcd_line_length);
				break;
			case BMP_RLE8_EOBMP:
				/* end of bitmap */
				decode = 0;
				break;
			case BMP_RLE8_DELTA:
				/* delta run */
				x += bmap[2];
				y -= bmap[3];
				/* 16bpix, 2-byte per pixel, x should *2 */
				fb = (uchar *) (lcd_base + (y + y_off - 1)
					* lcd_line_length + (x + x_off) * 2);
				bmap += 4;
				break;
			default:
				/* unencoded run */
				runlen = bmap[1];
				bmap += 2;
				if (y < height) {
					if (x < width) {
						if (x + runlen > width)
							cnt = width - x;
						else
							cnt = runlen;
						draw_unencoded_bitmap(
							(ushort **)&fb,
							bmap, cmap, cnt);
					}
					x += runlen;
				}
				bmap += runlen;
				if (runlen & 1)
					bmap++;
			}
		} else {
			/* encoded run */
			if (y < height) {
				runlen = bmap[0];
				if (x < width) {
					/* aggregate the same code */
					while (bmap[0] == 0xff &&
					       bmap[2] != BMP_RLE8_ESCAPE &&
					       bmap[1] == bmap[3]) {
						runlen += bmap[2];
						bmap += 2;
					}
					if (x + runlen > width)
						cnt = width - x;
					else
						cnt = runlen;
					draw_encoded_bitmap((ushort **)&fb,
						cmap[bmap[1]], cnt);
				}
				x += runlen;
			}
			bmap += 2;
		}
	}
}
#endif

__weak void fb_put_byte(uchar **fb, uchar **from)
{
	*(*fb)++ = *(*from)++;
}

#if defined(CONFIG_BMP_16BPP)
__weak void fb_put_word(uchar **fb, uchar **from)
{
	*(*fb)++ = *(*from)++;
	*(*fb)++ = *(*from)++;
}
#endif /* CONFIG_BMP_16BPP */

__weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
{
	int i;
	struct bmp_color_table_entry cte;
	ushort *cmap = configuration_get_cmap();

	for (i = 0; i < colors; ++i) {
		cte = bmp->color_table[i];
		*cmap = (((cte.red)   << 8) & 0xf800) |
			(((cte.green) << 3) & 0x07e0) |
			(((cte.blue)  >> 3) & 0x001f);
		cmap++;
	}
}

int lcd_display_bitmap(ulong bmp_image, int x, int y)
{
	ushort *cmap_base = NULL;
	ushort i, j;
	uchar *fb;
	struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
	uchar *bmap;
	ushort padded_width;
	unsigned long width, height, byte_width;
	unsigned long pwidth = panel_info.vl_col;
	unsigned colors, bpix, bmp_bpix;
	int hdr_size;
	struct bmp_color_table_entry *palette;

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

		return 1;
	}

	palette = bmp->color_table;
	width = get_unaligned_le32(&bmp->header.width);
	height = get_unaligned_le32(&bmp->header.height);
	bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
	hdr_size = get_unaligned_le16(&bmp->header.size);
	debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);

	colors = 1 << bmp_bpix;

	bpix = NBITS(panel_info.vl_bpix);

	if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
		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
	 * and displaying 24bpp BMPs on 32bpp LCDs
	 * */
	if (bpix != bmp_bpix &&
	    !(bmp_bpix == 8 && bpix == 16) &&
	    !(bmp_bpix == 24 && bpix == 32)) {
		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
			bpix, get_unaligned_le16(&bmp->header.bit_count));
		return 1;
	}

	debug("Display-bmp: %d x %d  with %d colors, display %d\n",
	      (int)width, (int)height, (int)colors, 1 << bpix);

	if (bmp_bpix == 8)
		lcd_set_cmap(bmp, colors);

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

#ifdef CONFIG_SPLASH_SCREEN_ALIGN
	splash_align_axis(&x, pwidth, width);
	splash_align_axis(&y, panel_info.vl_row, height);
#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 + get_unaligned_le32(&bmp->header.data_offset);
	fb   = (uchar *)(lcd_base +
		(y + height - 1) * lcd_line_length + x * bpix / 8);

	switch (bmp_bpix) {
	case 1:
	case 8: {
		cmap_base = configuration_get_cmap();
#ifdef CONFIG_LCD_BMP_RLE8
		u32 compression = get_unaligned_le32(&bmp->header.compression);
		debug("compressed %d %d\n", compression, BMP_BI_RLE8);
		if (compression == BMP_BI_RLE8) {
			if (bpix != 16) {
				/* TODO implement render code for bpix != 16 */
				printf("Error: only support 16 bpix");
				return 1;
			}
			lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
			break;
		}
#endif

		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) {
					fb_put_byte(&fb, &bmap);
				} else {
					struct bmp_color_table_entry *entry;
					uint val;

					if (cmap_base) {
						val = cmap_base[*bmap];
					} else {
						entry = &palette[*bmap];
						val = entry->blue >> 3 |
							entry->green >> 2 << 5 |
							entry->red >> 3 << 11;
					}
					*(uint16_t *)fb = val;
					bmap++;
					fb += sizeof(uint16_t) / sizeof(*fb);
				}
			}
			bmap += (padded_width - width);
			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++)
				fb_put_word(&fb, &bmap);

			bmap += (padded_width - width) * 2;
			fb -= width * 2 + lcd_line_length;
		}
		break;
#endif /* CONFIG_BMP_16BPP */
#if defined(CONFIG_BMP_24BPP)
	case 24:
		for (i = 0; i < height; ++i) {
			for (j = 0; j < width; j++) {
				*(fb++) = *(bmap++);
				*(fb++) = *(bmap++);
				*(fb++) = *(bmap++);
				*(fb++) = 0;
			}
			fb -= lcd_line_length + width * (bpix / 8);
		}
		break;
#endif /* CONFIG_BMP_24BPP */
#if defined(CONFIG_BMP_32BPP)
	case 32:
		for (i = 0; i < height; ++i) {
			for (j = 0; j < width; j++) {
				*(fb++) = *(bmap++);
				*(fb++) = *(bmap++);
				*(fb++) = *(bmap++);
				*(fb++) = *(bmap++);
			}
			fb -= lcd_line_length + width * (bpix / 8);
		}
		break;
#endif /* CONFIG_BMP_32BPP */
	default:
		break;
	};

	lcd_sync();
	return 0;
}
#endif

static void lcd_logo(void)
{
	lcd_logo_plot(0, 0);

#ifdef CONFIG_LCD_INFO
	lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
	lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
	lcd_show_board_info();
#endif /* CONFIG_LCD_INFO */
}

#ifdef CONFIG_SPLASHIMAGE_GUARD
static int on_splashimage(const char *name, const char *value, enum env_op op,
	int flags)
{
	ulong addr;
	int aligned;

	if (op == env_op_delete)
		return 0;

	addr = hextoul(value, NULL);
	/* See README.displaying-bmps */
	aligned = (addr % 4 == 2);
	if (!aligned) {
		printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
		return -1;
	}

	return 0;
}

U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
#endif

int lcd_get_pixel_width(void)
{
	return panel_info.vl_col;
}

int lcd_get_pixel_height(void)
{
	return panel_info.vl_row;
}