xref: /openbmc/u-boot/common/lcd.c (revision e355eec7)
1 /*
2  * Common LCD routines
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 /* #define DEBUG */
11 #include <config.h>
12 #include <common.h>
13 #include <command.h>
14 #include <env_callback.h>
15 #include <linux/types.h>
16 #include <stdio_dev.h>
17 #include <lcd.h>
18 #include <mapmem.h>
19 #include <watchdog.h>
20 #include <asm/unaligned.h>
21 #include <splash.h>
22 #include <asm/io.h>
23 #include <asm/unaligned.h>
24 #include <video_font.h>
25 
26 #ifdef CONFIG_LCD_LOGO
27 #include <bmp_logo.h>
28 #include <bmp_logo_data.h>
29 #if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
30 #error Default Color Map overlaps with Logo Color Map
31 #endif
32 #endif
33 
34 #ifndef CONFIG_LCD_ALIGNMENT
35 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
36 #endif
37 
38 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
39 	(LCD_BPP != LCD_COLOR32)
40 #error Unsupported LCD BPP.
41 #endif
42 
43 DECLARE_GLOBAL_DATA_PTR;
44 
45 static int lcd_init(void *lcdbase);
46 static void lcd_logo(void);
47 static void lcd_setfgcolor(int color);
48 static void lcd_setbgcolor(int color);
49 
50 static int lcd_color_fg;
51 static int lcd_color_bg;
52 int lcd_line_length;
53 char lcd_is_enabled = 0;
54 static void *lcd_base;			/* Start of framebuffer memory	*/
55 static char lcd_flush_dcache;	/* 1 to flush dcache after each lcd update */
56 
57 /* Flush LCD activity to the caches */
58 void lcd_sync(void)
59 {
60 	/*
61 	 * flush_dcache_range() is declared in common.h but it seems that some
62 	 * architectures do not actually implement it. Is there a way to find
63 	 * out whether it exists? For now, ARM is safe.
64 	 */
65 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
66 	int line_length;
67 
68 	if (lcd_flush_dcache)
69 		flush_dcache_range((ulong)lcd_base,
70 			(ulong)(lcd_base + lcd_get_size(&line_length)));
71 #endif
72 }
73 
74 void lcd_set_flush_dcache(int flush)
75 {
76 	lcd_flush_dcache = (flush != 0);
77 }
78 
79 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
80 {
81 	lcd_putc(c);
82 }
83 
84 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
85 {
86 	lcd_puts(s);
87 }
88 
89 /* Small utility to check that you got the colours right */
90 #ifdef LCD_TEST_PATTERN
91 
92 #if LCD_BPP == LCD_COLOR8
93 #define	N_BLK_VERT	2
94 #define	N_BLK_HOR	3
95 
96 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
97 	CONSOLE_COLOR_RED,	CONSOLE_COLOR_GREEN,	CONSOLE_COLOR_YELLOW,
98 	CONSOLE_COLOR_BLUE,	CONSOLE_COLOR_MAGENTA,	CONSOLE_COLOR_CYAN,
99 }; /*LCD_BPP == LCD_COLOR8 */
100 
101 #elif LCD_BPP == LCD_COLOR16
102 #define	N_BLK_VERT	2
103 #define	N_BLK_HOR	4
104 
105 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
106 	CONSOLE_COLOR_RED,	CONSOLE_COLOR_GREEN,	CONSOLE_COLOR_YELLOW,	CONSOLE_COLOR_BLUE,
107 	CONSOLE_COLOR_MAGENTA,	CONSOLE_COLOR_CYAN,	CONSOLE_COLOR_GREY,	CONSOLE_COLOR_WHITE,
108 };
109 #endif /*LCD_BPP == LCD_COLOR16 */
110 
111 static void test_pattern(void)
112 {
113 	ushort v_max  = panel_info.vl_row;
114 	ushort h_max  = panel_info.vl_col;
115 	ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
116 	ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
117 	ushort v, h;
118 #if LCD_BPP == LCD_COLOR8
119 	uchar *pix = (uchar *)lcd_base;
120 #elif LCD_BPP == LCD_COLOR16
121 	ushort *pix = (ushort *)lcd_base;
122 #endif
123 
124 	printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
125 		h_max, v_max, h_step, v_step);
126 
127 	for (v = 0; v < v_max; ++v) {
128 		uchar iy = v / v_step;
129 		for (h = 0; h < h_max; ++h) {
130 			uchar ix = N_BLK_HOR * iy + h / h_step;
131 			*pix++ = test_colors[ix];
132 		}
133 	}
134 }
135 #endif /* LCD_TEST_PATTERN */
136 
137 /*
138  * With most lcd drivers the line length is set up
139  * by calculating it from panel_info parameters. Some
140  * drivers need to calculate the line length differently,
141  * so make the function weak to allow overriding it.
142  */
143 __weak int lcd_get_size(int *line_length)
144 {
145 	*line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
146 	return *line_length * panel_info.vl_row;
147 }
148 
149 int drv_lcd_init(void)
150 {
151 	struct stdio_dev lcddev;
152 	int rc;
153 
154 	lcd_base = map_sysmem(gd->fb_base, 0);
155 
156 	lcd_init(lcd_base);
157 
158 	/* Device initialization */
159 	memset(&lcddev, 0, sizeof(lcddev));
160 
161 	strcpy(lcddev.name, "lcd");
162 	lcddev.ext   = 0;			/* No extensions */
163 	lcddev.flags = DEV_FLAGS_OUTPUT;	/* Output only */
164 	lcddev.putc  = lcd_stub_putc;		/* 'putc' function */
165 	lcddev.puts  = lcd_stub_puts;		/* 'puts' function */
166 
167 	rc = stdio_register(&lcddev);
168 
169 	return (rc == 0) ? 1 : rc;
170 }
171 
172 void lcd_clear(void)
173 {
174 	int bg_color;
175 	char *s;
176 	ulong addr;
177 	static int do_splash = 1;
178 #if LCD_BPP == LCD_COLOR8
179 	/* Setting the palette */
180 	lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
181 	lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
182 	lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
183 	lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
184 	lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
185 	lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
186 	lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
187 	lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
188 	lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
189 #endif
190 
191 #ifndef CONFIG_SYS_WHITE_ON_BLACK
192 	lcd_setfgcolor(CONSOLE_COLOR_BLACK);
193 	lcd_setbgcolor(CONSOLE_COLOR_WHITE);
194 	bg_color = CONSOLE_COLOR_WHITE;
195 #else
196 	lcd_setfgcolor(CONSOLE_COLOR_WHITE);
197 	lcd_setbgcolor(CONSOLE_COLOR_BLACK);
198 	bg_color = CONSOLE_COLOR_BLACK;
199 #endif	/* CONFIG_SYS_WHITE_ON_BLACK */
200 
201 #ifdef	LCD_TEST_PATTERN
202 	test_pattern();
203 #else
204 	/* set framebuffer to background color */
205 #if (LCD_BPP != LCD_COLOR32)
206 	memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
207 #else
208 	u32 *ppix = lcd_base;
209 	u32 i;
210 	for (i = 0;
211 	   i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
212 	   i++) {
213 		*ppix++ = bg_color;
214 	}
215 #endif
216 #endif
217 	/* setup text-console */
218 	debug("[LCD] setting up console...\n");
219 	lcd_init_console(lcd_base,
220 			 panel_info.vl_col,
221 			 panel_info.vl_row,
222 			 panel_info.vl_rot);
223 	/* Paint the logo and retrieve LCD base address */
224 	debug("[LCD] Drawing the logo...\n");
225 	if (do_splash) {
226 		s = getenv("splashimage");
227 		if (s) {
228 			do_splash = 0;
229 			addr = simple_strtoul(s, NULL, 16);
230 			if (lcd_splash(addr) == 0) {
231 				lcd_sync();
232 				return;
233 			}
234 		}
235 	}
236 
237 	lcd_logo();
238 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
239 	addr = (ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length;
240 	lcd_init_console((void *)addr, panel_info.vl_col,
241 			 panel_info.vl_row, panel_info.vl_rot);
242 #endif
243 	lcd_sync();
244 }
245 
246 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
247 			char *const argv[])
248 {
249 	lcd_clear();
250 	return 0;
251 }
252 U_BOOT_CMD(cls,	1, 1, do_lcd_clear, "clear screen", "");
253 
254 static int lcd_init(void *lcdbase)
255 {
256 	debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
257 	lcd_ctrl_init(lcdbase);
258 
259 	/*
260 	 * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
261 	 * the 'lcdbase' argument and uses custom lcd base address
262 	 * by setting up gd->fb_base. Check for this condition and fixup
263 	 * 'lcd_base' address.
264 	 */
265 	if (map_to_sysmem(lcdbase) != gd->fb_base)
266 		lcd_base = map_sysmem(gd->fb_base, 0);
267 
268 	debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
269 
270 	lcd_get_size(&lcd_line_length);
271 	lcd_is_enabled = 1;
272 	lcd_clear();
273 	lcd_enable();
274 
275 	/* Initialize the console */
276 	lcd_set_col(0);
277 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
278 	lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
279 #else
280 	lcd_set_row(1);	/* leave 1 blank line below logo */
281 #endif
282 
283 	return 0;
284 }
285 
286 /*
287  * This is called early in the system initialization to grab memory
288  * for the LCD controller.
289  * Returns new address for monitor, after reserving LCD buffer memory
290  *
291  * Note that this is running from ROM, so no write access to global data.
292  */
293 ulong lcd_setmem(ulong addr)
294 {
295 	ulong size;
296 	int line_length;
297 
298 	debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
299 		panel_info.vl_row, NBITS(panel_info.vl_bpix));
300 
301 	size = lcd_get_size(&line_length);
302 
303 	/* Round up to nearest full page, or MMU section if defined */
304 	size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
305 	addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
306 
307 	/* Allocate pages for the frame buffer. */
308 	addr -= size;
309 
310 	debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
311 	      size >> 10, addr);
312 
313 	return addr;
314 }
315 
316 static void lcd_setfgcolor(int color)
317 {
318 	lcd_color_fg = color;
319 }
320 
321 int lcd_getfgcolor(void)
322 {
323 	return lcd_color_fg;
324 }
325 
326 static void lcd_setbgcolor(int color)
327 {
328 	lcd_color_bg = color;
329 }
330 
331 int lcd_getbgcolor(void)
332 {
333 	return lcd_color_bg;
334 }
335 
336 #ifdef CONFIG_LCD_LOGO
337 __weak void lcd_logo_set_cmap(void)
338 {
339 	int i;
340 	ushort *cmap = configuration_get_cmap();
341 
342 	for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i)
343 		*cmap++ = bmp_logo_palette[i];
344 }
345 
346 void lcd_logo_plot(int x, int y)
347 {
348 	ushort i, j;
349 	uchar *bmap = &bmp_logo_bitmap[0];
350 	unsigned bpix = NBITS(panel_info.vl_bpix);
351 	uchar *fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
352 	ushort *fb16;
353 
354 	debug("Logo: width %d  height %d  colors %d\n",
355 	      BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS);
356 
357 	if (bpix < 12) {
358 		WATCHDOG_RESET();
359 		lcd_logo_set_cmap();
360 		WATCHDOG_RESET();
361 
362 		for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
363 			memcpy(fb, bmap, BMP_LOGO_WIDTH);
364 			bmap += BMP_LOGO_WIDTH;
365 			fb += panel_info.vl_col;
366 		}
367 	}
368 	else { /* true color mode */
369 		u16 col16;
370 		fb16 = (ushort *)fb;
371 		for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
372 			for (j = 0; j < BMP_LOGO_WIDTH; j++) {
373 				col16 = bmp_logo_palette[(bmap[j]-16)];
374 				fb16[j] =
375 					((col16 & 0x000F) << 1) |
376 					((col16 & 0x00F0) << 3) |
377 					((col16 & 0x0F00) << 4);
378 				}
379 			bmap += BMP_LOGO_WIDTH;
380 			fb16 += panel_info.vl_col;
381 		}
382 	}
383 
384 	WATCHDOG_RESET();
385 	lcd_sync();
386 }
387 #else
388 static inline void lcd_logo_plot(int x, int y) {}
389 #endif /* CONFIG_LCD_LOGO */
390 
391 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
392 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
393 #define BMP_ALIGN_CENTER	0x7FFF
394 
395 static void splash_align_axis(int *axis, unsigned long panel_size,
396 					unsigned long picture_size)
397 {
398 	unsigned long panel_picture_delta = panel_size - picture_size;
399 	unsigned long axis_alignment;
400 
401 	if (*axis == BMP_ALIGN_CENTER)
402 		axis_alignment = panel_picture_delta / 2;
403 	else if (*axis < 0)
404 		axis_alignment = panel_picture_delta + *axis + 1;
405 	else
406 		return;
407 
408 	*axis = max(0, (int)axis_alignment);
409 }
410 #endif
411 
412 #ifdef CONFIG_LCD_BMP_RLE8
413 #define BMP_RLE8_ESCAPE		0
414 #define BMP_RLE8_EOL		0
415 #define BMP_RLE8_EOBMP		1
416 #define BMP_RLE8_DELTA		2
417 
418 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
419 				  int cnt)
420 {
421 	while (cnt > 0) {
422 		*(*fbp)++ = cmap[*bmap++];
423 		cnt--;
424 	}
425 }
426 
427 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
428 {
429 	ushort *fb = *fbp;
430 	int cnt_8copy = cnt >> 3;
431 
432 	cnt -= cnt_8copy << 3;
433 	while (cnt_8copy > 0) {
434 		*fb++ = c;
435 		*fb++ = c;
436 		*fb++ = c;
437 		*fb++ = c;
438 		*fb++ = c;
439 		*fb++ = c;
440 		*fb++ = c;
441 		*fb++ = c;
442 		cnt_8copy--;
443 	}
444 	while (cnt > 0) {
445 		*fb++ = c;
446 		cnt--;
447 	}
448 	*fbp = fb;
449 }
450 
451 /*
452  * Do not call this function directly, must be called from lcd_display_bitmap.
453  */
454 static void lcd_display_rle8_bitmap(struct bmp_image *bmp, ushort *cmap,
455 				    uchar *fb, int x_off, int y_off)
456 {
457 	uchar *bmap;
458 	ulong width, height;
459 	ulong cnt, runlen;
460 	int x, y;
461 	int decode = 1;
462 
463 	width = get_unaligned_le32(&bmp->header.width);
464 	height = get_unaligned_le32(&bmp->header.height);
465 	bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
466 
467 	x = 0;
468 	y = height - 1;
469 
470 	while (decode) {
471 		if (bmap[0] == BMP_RLE8_ESCAPE) {
472 			switch (bmap[1]) {
473 			case BMP_RLE8_EOL:
474 				/* end of line */
475 				bmap += 2;
476 				x = 0;
477 				y--;
478 				/* 16bpix, 2-byte per pixel, width should *2 */
479 				fb -= (width * 2 + lcd_line_length);
480 				break;
481 			case BMP_RLE8_EOBMP:
482 				/* end of bitmap */
483 				decode = 0;
484 				break;
485 			case BMP_RLE8_DELTA:
486 				/* delta run */
487 				x += bmap[2];
488 				y -= bmap[3];
489 				/* 16bpix, 2-byte per pixel, x should *2 */
490 				fb = (uchar *) (lcd_base + (y + y_off - 1)
491 					* lcd_line_length + (x + x_off) * 2);
492 				bmap += 4;
493 				break;
494 			default:
495 				/* unencoded run */
496 				runlen = bmap[1];
497 				bmap += 2;
498 				if (y < height) {
499 					if (x < width) {
500 						if (x + runlen > width)
501 							cnt = width - x;
502 						else
503 							cnt = runlen;
504 						draw_unencoded_bitmap(
505 							(ushort **)&fb,
506 							bmap, cmap, cnt);
507 					}
508 					x += runlen;
509 				}
510 				bmap += runlen;
511 				if (runlen & 1)
512 					bmap++;
513 			}
514 		} else {
515 			/* encoded run */
516 			if (y < height) {
517 				runlen = bmap[0];
518 				if (x < width) {
519 					/* aggregate the same code */
520 					while (bmap[0] == 0xff &&
521 					       bmap[2] != BMP_RLE8_ESCAPE &&
522 					       bmap[1] == bmap[3]) {
523 						runlen += bmap[2];
524 						bmap += 2;
525 					}
526 					if (x + runlen > width)
527 						cnt = width - x;
528 					else
529 						cnt = runlen;
530 					draw_encoded_bitmap((ushort **)&fb,
531 						cmap[bmap[1]], cnt);
532 				}
533 				x += runlen;
534 			}
535 			bmap += 2;
536 		}
537 	}
538 }
539 #endif
540 
541 __weak void fb_put_byte(uchar **fb, uchar **from)
542 {
543 	*(*fb)++ = *(*from)++;
544 }
545 
546 #if defined(CONFIG_BMP_16BPP)
547 __weak void fb_put_word(uchar **fb, uchar **from)
548 {
549 	*(*fb)++ = *(*from)++;
550 	*(*fb)++ = *(*from)++;
551 }
552 #endif /* CONFIG_BMP_16BPP */
553 
554 __weak void lcd_set_cmap(struct bmp_image *bmp, unsigned colors)
555 {
556 	int i;
557 	struct bmp_color_table_entry cte;
558 	ushort *cmap = configuration_get_cmap();
559 
560 	for (i = 0; i < colors; ++i) {
561 		cte = bmp->color_table[i];
562 		*cmap = (((cte.red)   << 8) & 0xf800) |
563 			(((cte.green) << 3) & 0x07e0) |
564 			(((cte.blue)  >> 3) & 0x001f);
565 #if defined(CONFIG_MPC823)
566 		cmap--;
567 #else
568 		cmap++;
569 #endif
570 	}
571 }
572 
573 int lcd_display_bitmap(ulong bmp_image, int x, int y)
574 {
575 	ushort *cmap_base = NULL;
576 	ushort i, j;
577 	uchar *fb;
578 	struct bmp_image *bmp = (struct bmp_image *)map_sysmem(bmp_image, 0);
579 	uchar *bmap;
580 	ushort padded_width;
581 	unsigned long width, height, byte_width;
582 	unsigned long pwidth = panel_info.vl_col;
583 	unsigned colors, bpix, bmp_bpix;
584 	int hdr_size;
585 	struct bmp_color_table_entry *palette = bmp->color_table;
586 
587 	if (!bmp || !(bmp->header.signature[0] == 'B' &&
588 		bmp->header.signature[1] == 'M')) {
589 		printf("Error: no valid bmp image at %lx\n", bmp_image);
590 
591 		return 1;
592 	}
593 
594 	width = get_unaligned_le32(&bmp->header.width);
595 	height = get_unaligned_le32(&bmp->header.height);
596 	bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
597 	hdr_size = get_unaligned_le16(&bmp->header.size);
598 	debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
599 
600 	colors = 1 << bmp_bpix;
601 
602 	bpix = NBITS(panel_info.vl_bpix);
603 
604 	if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
605 		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
606 			bpix, bmp_bpix);
607 
608 		return 1;
609 	}
610 
611 	/*
612 	 * We support displaying 8bpp BMPs on 16bpp LCDs
613 	 * and displaying 24bpp BMPs on 32bpp LCDs
614 	 * */
615 	if (bpix != bmp_bpix &&
616 	    !(bmp_bpix == 8 && bpix == 16) &&
617 	    !(bmp_bpix == 24 && bpix == 32)) {
618 		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
619 			bpix, get_unaligned_le16(&bmp->header.bit_count));
620 		return 1;
621 	}
622 
623 	debug("Display-bmp: %d x %d  with %d colors, display %d\n",
624 	      (int)width, (int)height, (int)colors, 1 << bpix);
625 
626 	if (bmp_bpix == 8)
627 		lcd_set_cmap(bmp, colors);
628 
629 	padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
630 
631 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
632 	splash_align_axis(&x, pwidth, width);
633 	splash_align_axis(&y, panel_info.vl_row, height);
634 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
635 
636 	if ((x + width) > pwidth)
637 		width = pwidth - x;
638 	if ((y + height) > panel_info.vl_row)
639 		height = panel_info.vl_row - y;
640 
641 	bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
642 	fb   = (uchar *)(lcd_base +
643 		(y + height - 1) * lcd_line_length + x * bpix / 8);
644 
645 	switch (bmp_bpix) {
646 	case 1:
647 	case 8: {
648 		cmap_base = configuration_get_cmap();
649 #ifdef CONFIG_LCD_BMP_RLE8
650 		u32 compression = get_unaligned_le32(&bmp->header.compression);
651 		debug("compressed %d %d\n", compression, BMP_BI_RLE8);
652 		if (compression == BMP_BI_RLE8) {
653 			if (bpix != 16) {
654 				/* TODO implement render code for bpix != 16 */
655 				printf("Error: only support 16 bpix");
656 				return 1;
657 			}
658 			lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
659 			break;
660 		}
661 #endif
662 
663 		if (bpix != 16)
664 			byte_width = width;
665 		else
666 			byte_width = width * 2;
667 
668 		for (i = 0; i < height; ++i) {
669 			WATCHDOG_RESET();
670 			for (j = 0; j < width; j++) {
671 				if (bpix != 16) {
672 					fb_put_byte(&fb, &bmap);
673 				} else {
674 					struct bmp_color_table_entry *entry;
675 					uint val;
676 
677 					if (cmap_base) {
678 						val = cmap_base[*bmap];
679 					} else {
680 						entry = &palette[*bmap];
681 						val = entry->blue >> 3 |
682 							entry->green >> 2 << 5 |
683 							entry->red >> 3 << 11;
684 					}
685 					*(uint16_t *)fb = val;
686 					bmap++;
687 					fb += sizeof(uint16_t) / sizeof(*fb);
688 				}
689 			}
690 			bmap += (padded_width - width);
691 			fb -= byte_width + lcd_line_length;
692 		}
693 		break;
694 	}
695 #if defined(CONFIG_BMP_16BPP)
696 	case 16:
697 		for (i = 0; i < height; ++i) {
698 			WATCHDOG_RESET();
699 			for (j = 0; j < width; j++)
700 				fb_put_word(&fb, &bmap);
701 
702 			bmap += (padded_width - width) * 2;
703 			fb -= width * 2 + lcd_line_length;
704 		}
705 		break;
706 #endif /* CONFIG_BMP_16BPP */
707 #if defined(CONFIG_BMP_24BMP)
708 	case 24:
709 		for (i = 0; i < height; ++i) {
710 			for (j = 0; j < width; j++) {
711 				*(fb++) = *(bmap++);
712 				*(fb++) = *(bmap++);
713 				*(fb++) = *(bmap++);
714 				*(fb++) = 0;
715 			}
716 			fb -= lcd_line_length + width * (bpix / 8);
717 		}
718 		break;
719 #endif /* CONFIG_BMP_24BMP */
720 #if defined(CONFIG_BMP_32BPP)
721 	case 32:
722 		for (i = 0; i < height; ++i) {
723 			for (j = 0; j < width; j++) {
724 				*(fb++) = *(bmap++);
725 				*(fb++) = *(bmap++);
726 				*(fb++) = *(bmap++);
727 				*(fb++) = *(bmap++);
728 			}
729 			fb -= lcd_line_length + width * (bpix / 8);
730 		}
731 		break;
732 #endif /* CONFIG_BMP_32BPP */
733 	default:
734 		break;
735 	};
736 
737 	lcd_sync();
738 	return 0;
739 }
740 #endif
741 
742 static void lcd_logo(void)
743 {
744 	lcd_logo_plot(0, 0);
745 
746 #ifdef CONFIG_LCD_INFO
747 	lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
748 	lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
749 	lcd_show_board_info();
750 #endif /* CONFIG_LCD_INFO */
751 }
752 
753 #ifdef CONFIG_SPLASHIMAGE_GUARD
754 static int on_splashimage(const char *name, const char *value, enum env_op op,
755 	int flags)
756 {
757 	ulong addr;
758 	int aligned;
759 
760 	if (op == env_op_delete)
761 		return 0;
762 
763 	addr = simple_strtoul(value, NULL, 16);
764 	/* See README.displaying-bmps */
765 	aligned = (addr % 4 == 2);
766 	if (!aligned) {
767 		printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
768 		return -1;
769 	}
770 
771 	return 0;
772 }
773 
774 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
775 #endif
776 
777 int lcd_get_pixel_width(void)
778 {
779 	return panel_info.vl_col;
780 }
781 
782 int lcd_get_pixel_height(void)
783 {
784 	return panel_info.vl_row;
785 }
786