xref: /openbmc/u-boot/common/lcd.c (revision 6d0f6bcf)
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 <version.h>
36 #include <stdarg.h>
37 #include <linux/types.h>
38 #include <devices.h>
39 #if defined(CONFIG_POST)
40 #include <post.h>
41 #endif
42 #include <lcd.h>
43 #include <watchdog.h>
44 
45 #if defined(CONFIG_PXA250)
46 #include <asm/byteorder.h>
47 #endif
48 
49 #if defined(CONFIG_MPC823)
50 #include <lcdvideo.h>
51 #endif
52 
53 #if defined(CONFIG_ATMEL_LCD)
54 #include <atmel_lcdc.h>
55 #include <nand.h>
56 #endif
57 
58 /************************************************************************/
59 /* ** FONT DATA								*/
60 /************************************************************************/
61 #include <video_font.h>		/* Get font data, width and height	*/
62 
63 /************************************************************************/
64 /* ** LOGO DATA								*/
65 /************************************************************************/
66 #ifdef CONFIG_LCD_LOGO
67 # include <bmp_logo.h>		/* Get logo data, width and height	*/
68 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET)
69 #  error Default Color Map overlaps with Logo Color Map
70 # endif
71 #endif
72 
73 DECLARE_GLOBAL_DATA_PTR;
74 
75 ulong lcd_setmem (ulong addr);
76 
77 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count);
78 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
79 static inline void lcd_putc_xy (ushort x, ushort y, uchar  c);
80 
81 static int lcd_init (void *lcdbase);
82 
83 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
84 extern void lcd_ctrl_init (void *lcdbase);
85 extern void lcd_enable (void);
86 static void *lcd_logo (void);
87 
88 
89 #if LCD_BPP == LCD_COLOR8
90 extern void lcd_setcolreg (ushort regno,
91 				ushort red, ushort green, ushort blue);
92 #endif
93 #if LCD_BPP == LCD_MONOCHROME
94 extern void lcd_initcolregs (void);
95 #endif
96 
97 static int lcd_getbgcolor (void);
98 static void lcd_setfgcolor (int color);
99 static void lcd_setbgcolor (int color);
100 
101 char lcd_is_enabled = 0;
102 extern vidinfo_t panel_info;
103 
104 #ifdef	NOT_USED_SO_FAR
105 static void lcd_getcolreg (ushort regno,
106 				ushort *red, ushort *green, ushort *blue);
107 static int lcd_getfgcolor (void);
108 #endif	/* NOT_USED_SO_FAR */
109 
110 /************************************************************************/
111 
112 /*----------------------------------------------------------------------*/
113 
114 static void console_scrollup (void)
115 {
116 #if 1
117 	/* Copy up rows ignoring the first one */
118 	memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
119 
120 	/* Clear the last one */
121 	memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
122 #else
123 	/*
124 	 * Poor attempt to optimize speed by moving "long"s.
125 	 * But the code is ugly, and not a bit faster :-(
126 	 */
127 	ulong *t = (ulong *)CONSOLE_ROW_FIRST;
128 	ulong *s = (ulong *)CONSOLE_ROW_SECOND;
129 	ulong    l = CONSOLE_SCROLL_SIZE / sizeof(ulong);
130 	uchar  c = lcd_color_bg & 0xFF;
131 	ulong val= (c<<24) | (c<<16) | (c<<8) | c;
132 
133 	while (l--)
134 		*t++ = *s++;
135 
136 	t = (ulong *)CONSOLE_ROW_LAST;
137 	l = CONSOLE_ROW_SIZE / sizeof(ulong);
138 
139 	while (l-- > 0)
140 		*t++ = val;
141 #endif
142 }
143 
144 /*----------------------------------------------------------------------*/
145 
146 static inline void console_back (void)
147 {
148 	if (--console_col < 0) {
149 		console_col = CONSOLE_COLS-1 ;
150 		if (--console_row < 0) {
151 			console_row = 0;
152 		}
153 	}
154 
155 	lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
156 		     console_row * VIDEO_FONT_HEIGHT,
157 		     ' ');
158 }
159 
160 /*----------------------------------------------------------------------*/
161 
162 static inline void console_newline (void)
163 {
164 	++console_row;
165 	console_col = 0;
166 
167 	/* Check if we need to scroll the terminal */
168 	if (console_row >= CONSOLE_ROWS) {
169 		/* Scroll everything up */
170 		console_scrollup () ;
171 		--console_row;
172 	}
173 }
174 
175 /*----------------------------------------------------------------------*/
176 
177 void lcd_putc (const char c)
178 {
179 	if (!lcd_is_enabled) {
180 		serial_putc(c);
181 		return;
182 	}
183 
184 	switch (c) {
185 	case '\r':	console_col = 0;
186 			return;
187 
188 	case '\n':	console_newline();
189 			return;
190 
191 	case '\t':	/* Tab (8 chars alignment) */
192 			console_col |=  8;
193 			console_col &= ~7;
194 
195 			if (console_col >= CONSOLE_COLS) {
196 				console_newline();
197 			}
198 			return;
199 
200 	case '\b':	console_back();
201 			return;
202 
203 	default:	lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
204 				     console_row * VIDEO_FONT_HEIGHT,
205 				     c);
206 			if (++console_col >= CONSOLE_COLS) {
207 				console_newline();
208 			}
209 			return;
210 	}
211 	/* NOTREACHED */
212 }
213 
214 /*----------------------------------------------------------------------*/
215 
216 void lcd_puts (const char *s)
217 {
218 	if (!lcd_is_enabled) {
219 		serial_puts (s);
220 		return;
221 	}
222 
223 	while (*s) {
224 		lcd_putc (*s++);
225 	}
226 }
227 
228 /************************************************************************/
229 /* ** Low-Level Graphics Routines					*/
230 /************************************************************************/
231 
232 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
233 {
234 	uchar *dest;
235 	ushort off, row;
236 
237 	dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
238 	off  = x * (1 << LCD_BPP) % 8;
239 
240 	for (row=0;  row < VIDEO_FONT_HEIGHT;  ++row, dest += lcd_line_length)  {
241 		uchar *s = str;
242 		uchar *d = dest;
243 		int i;
244 
245 #if LCD_BPP == LCD_MONOCHROME
246 		uchar rest = *d & -(1 << (8-off));
247 		uchar sym;
248 #endif
249 		for (i=0; i<count; ++i) {
250 			uchar c, bits;
251 
252 			c = *s++;
253 			bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
254 
255 #if LCD_BPP == LCD_MONOCHROME
256 			sym  = (COLOR_MASK(lcd_color_fg) & bits) |
257 			       (COLOR_MASK(lcd_color_bg) & ~bits);
258 
259 			*d++ = rest | (sym >> off);
260 			rest = sym << (8-off);
261 #elif LCD_BPP == LCD_COLOR8
262 			for (c=0; c<8; ++c) {
263 				*d++ = (bits & 0x80) ?
264 						lcd_color_fg : lcd_color_bg;
265 				bits <<= 1;
266 			}
267 #elif LCD_BPP == LCD_COLOR16
268 			for (c=0; c<16; ++c) {
269 				*d++ = (bits & 0x80) ?
270 						lcd_color_fg : lcd_color_bg;
271 				bits <<= 1;
272 			}
273 #endif
274 		}
275 #if LCD_BPP == LCD_MONOCHROME
276 		*d  = rest | (*d & ((1 << (8-off)) - 1));
277 #endif
278 	}
279 }
280 
281 /*----------------------------------------------------------------------*/
282 
283 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
284 {
285 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
286 	lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen ((char *)s));
287 #else
288 	lcd_drawchars (x, y, s, strlen ((char *)s));
289 #endif
290 }
291 
292 /*----------------------------------------------------------------------*/
293 
294 static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
295 {
296 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
297 	lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
298 #else
299 	lcd_drawchars (x, y, &c, 1);
300 #endif
301 }
302 
303 /************************************************************************/
304 /**  Small utility to check that you got the colours right		*/
305 /************************************************************************/
306 #ifdef LCD_TEST_PATTERN
307 
308 #define	N_BLK_VERT	2
309 #define	N_BLK_HOR	3
310 
311 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
312 	CONSOLE_COLOR_RED,	CONSOLE_COLOR_GREEN,	CONSOLE_COLOR_YELLOW,
313 	CONSOLE_COLOR_BLUE,	CONSOLE_COLOR_MAGENTA,	CONSOLE_COLOR_CYAN,
314 };
315 
316 static void test_pattern (void)
317 {
318 	ushort v_max  = panel_info.vl_row;
319 	ushort h_max  = panel_info.vl_col;
320 	ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
321 	ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
322 	ushort v, h;
323 	uchar *pix = (uchar *)lcd_base;
324 
325 	printf ("[LCD] Test Pattern: %d x %d [%d x %d]\n",
326 		h_max, v_max, h_step, v_step);
327 
328 	/* WARNING: Code silently assumes 8bit/pixel */
329 	for (v=0; v<v_max; ++v) {
330 		uchar iy = v / v_step;
331 		for (h=0; h<h_max; ++h) {
332 			uchar ix = N_BLK_HOR * iy + (h/h_step);
333 			*pix++ = test_colors[ix];
334 		}
335 	}
336 }
337 #endif /* LCD_TEST_PATTERN */
338 
339 
340 /************************************************************************/
341 /* ** GENERIC Initialization Routines					*/
342 /************************************************************************/
343 
344 int drv_lcd_init (void)
345 {
346 	device_t lcddev;
347 	int rc;
348 
349 	lcd_base = (void *)(gd->fb_base);
350 
351 	lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
352 
353 	lcd_init (lcd_base);		/* LCD initialization */
354 
355 	/* Device initialization */
356 	memset (&lcddev, 0, sizeof (lcddev));
357 
358 	strcpy (lcddev.name, "lcd");
359 	lcddev.ext   = 0;			/* No extensions */
360 	lcddev.flags = DEV_FLAGS_OUTPUT;	/* Output only */
361 	lcddev.putc  = lcd_putc;		/* 'putc' function */
362 	lcddev.puts  = lcd_puts;		/* 'puts' function */
363 
364 	rc = device_register (&lcddev);
365 
366 	return (rc == 0) ? 1 : rc;
367 }
368 
369 /*----------------------------------------------------------------------*/
370 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
371 {
372 #if LCD_BPP == LCD_MONOCHROME
373 	/* Setting the palette */
374 	lcd_initcolregs();
375 
376 #elif LCD_BPP == LCD_COLOR8
377 	/* Setting the palette */
378 	lcd_setcolreg  (CONSOLE_COLOR_BLACK,       0,    0,    0);
379 	lcd_setcolreg  (CONSOLE_COLOR_RED,	0xFF,    0,    0);
380 	lcd_setcolreg  (CONSOLE_COLOR_GREEN,       0, 0xFF,    0);
381 	lcd_setcolreg  (CONSOLE_COLOR_YELLOW,	0xFF, 0xFF,    0);
382 	lcd_setcolreg  (CONSOLE_COLOR_BLUE,        0,    0, 0xFF);
383 	lcd_setcolreg  (CONSOLE_COLOR_MAGENTA,	0xFF,    0, 0xFF);
384 	lcd_setcolreg  (CONSOLE_COLOR_CYAN,	   0, 0xFF, 0xFF);
385 	lcd_setcolreg  (CONSOLE_COLOR_GREY,	0xAA, 0xAA, 0xAA);
386 	lcd_setcolreg  (CONSOLE_COLOR_WHITE,	0xFF, 0xFF, 0xFF);
387 #endif
388 
389 #ifndef CONFIG_SYS_WHITE_ON_BLACK
390 	lcd_setfgcolor (CONSOLE_COLOR_BLACK);
391 	lcd_setbgcolor (CONSOLE_COLOR_WHITE);
392 #else
393 	lcd_setfgcolor (CONSOLE_COLOR_WHITE);
394 	lcd_setbgcolor (CONSOLE_COLOR_BLACK);
395 #endif	/* CONFIG_SYS_WHITE_ON_BLACK */
396 
397 #ifdef	LCD_TEST_PATTERN
398 	test_pattern();
399 #else
400 	/* set framebuffer to background color */
401 	memset ((char *)lcd_base,
402 		COLOR_MASK(lcd_getbgcolor()),
403 		lcd_line_length*panel_info.vl_row);
404 #endif
405 	/* Paint the logo and retrieve LCD base address */
406 	debug ("[LCD] Drawing the logo...\n");
407 	lcd_console_address = lcd_logo ();
408 
409 	console_col = 0;
410 	console_row = 0;
411 
412 	return (0);
413 }
414 
415 U_BOOT_CMD(
416 	cls,	1,	1,	lcd_clear,
417 	"cls     - clear screen\n",
418 	NULL
419 );
420 
421 /*----------------------------------------------------------------------*/
422 
423 static int lcd_init (void *lcdbase)
424 {
425 	/* Initialize the lcd controller */
426 	debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
427 
428 	lcd_ctrl_init (lcdbase);
429 	lcd_clear (NULL, 1, 1, NULL);	/* dummy args */
430 	lcd_enable ();
431 
432 	/* Initialize the console */
433 	console_col = 0;
434 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
435 	console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
436 #else
437 	console_row = 1;	/* leave 1 blank line below logo */
438 #endif
439 	lcd_is_enabled = 1;
440 
441 	return 0;
442 }
443 
444 
445 /************************************************************************/
446 /* ** ROM capable initialization part - needed to reserve FB memory	*/
447 /************************************************************************/
448 /*
449  * This is called early in the system initialization to grab memory
450  * for the LCD controller.
451  * Returns new address for monitor, after reserving LCD buffer memory
452  *
453  * Note that this is running from ROM, so no write access to global data.
454  */
455 ulong lcd_setmem (ulong addr)
456 {
457 	ulong size;
458 	int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
459 
460 	debug ("LCD panel info: %d x %d, %d bit/pix\n",
461 		panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
462 
463 	size = line_length * panel_info.vl_row;
464 
465 	/* Round up to nearest full page */
466 	size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
467 
468 	/* Allocate pages for the frame buffer. */
469 	addr -= size;
470 
471 	debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
472 
473 	return (addr);
474 }
475 
476 /*----------------------------------------------------------------------*/
477 
478 static void lcd_setfgcolor (int color)
479 {
480 #ifdef CONFIG_ATMEL_LCD
481 	lcd_color_fg = color;
482 #else
483 	lcd_color_fg = color & 0x0F;
484 #endif
485 }
486 
487 /*----------------------------------------------------------------------*/
488 
489 static void lcd_setbgcolor (int color)
490 {
491 #ifdef CONFIG_ATMEL_LCD
492 	lcd_color_bg = color;
493 #else
494 	lcd_color_bg = color & 0x0F;
495 #endif
496 }
497 
498 /*----------------------------------------------------------------------*/
499 
500 #ifdef	NOT_USED_SO_FAR
501 static int lcd_getfgcolor (void)
502 {
503 	return lcd_color_fg;
504 }
505 #endif	/* NOT_USED_SO_FAR */
506 
507 /*----------------------------------------------------------------------*/
508 
509 static int lcd_getbgcolor (void)
510 {
511 	return lcd_color_bg;
512 }
513 
514 /*----------------------------------------------------------------------*/
515 
516 /************************************************************************/
517 /* ** Chipset depending Bitmap / Logo stuff...                          */
518 /************************************************************************/
519 #ifdef CONFIG_LCD_LOGO
520 void bitmap_plot (int x, int y)
521 {
522 #ifdef CONFIG_ATMEL_LCD
523 	uint *cmap;
524 #else
525 	ushort *cmap;
526 #endif
527 	ushort i, j;
528 	uchar *bmap;
529 	uchar *fb;
530 	ushort *fb16;
531 #if defined(CONFIG_PXA250)
532 	struct pxafb_info *fbi = &panel_info.pxa;
533 #elif defined(CONFIG_MPC823)
534 	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
535 	volatile cpm8xx_t *cp = &(immr->im_cpm);
536 #endif
537 
538 	debug ("Logo: width %d  height %d  colors %d  cmap %d\n",
539 		BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
540 		(int)(sizeof(bmp_logo_palette)/(sizeof(ushort))));
541 
542 	bmap = &bmp_logo_bitmap[0];
543 	fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
544 
545 	if (NBITS(panel_info.vl_bpix) < 12) {
546 		/* Leave room for default color map */
547 #if defined(CONFIG_PXA250)
548 		cmap = (ushort *)fbi->palette;
549 #elif defined(CONFIG_MPC823)
550 		cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
551 #elif defined(CONFIG_ATMEL_LCD)
552 		cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
553 #endif
554 
555 		WATCHDOG_RESET();
556 
557 		/* Set color map */
558 		for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
559 			ushort colreg = bmp_logo_palette[i];
560 #ifdef CONFIG_ATMEL_LCD
561 			uint lut_entry;
562 #ifdef CONFIG_ATMEL_LCD_BGR555
563 			lut_entry = ((colreg & 0x000F) << 11) |
564 				    ((colreg & 0x00F0) <<  2) |
565 				    ((colreg & 0x0F00) >>  7);
566 #else /* CONFIG_ATMEL_LCD_RGB565 */
567 			lut_entry = ((colreg & 0x000F) << 1) |
568 				    ((colreg & 0x00F0) << 3) |
569 				    ((colreg & 0x0F00) << 4);
570 #endif
571 			*(cmap + BMP_LOGO_OFFSET) = lut_entry;
572 			cmap++;
573 #else /* !CONFIG_ATMEL_LCD */
574 #ifdef  CONFIG_SYS_INVERT_COLORS
575 			*cmap++ = 0xffff - colreg;
576 #else
577 			*cmap++ = colreg;
578 #endif
579 #endif /* CONFIG_ATMEL_LCD */
580 		}
581 
582 		WATCHDOG_RESET();
583 
584 		for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
585 			memcpy (fb, bmap, BMP_LOGO_WIDTH);
586 			bmap += BMP_LOGO_WIDTH;
587 			fb   += panel_info.vl_col;
588 		}
589 	}
590 	else { /* true color mode */
591 		fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
592 		for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
593 			for (j=0; j<BMP_LOGO_WIDTH; j++) {
594 				fb16[j] = bmp_logo_palette[(bmap[j])];
595 				}
596 			bmap += BMP_LOGO_WIDTH;
597 			fb16 += panel_info.vl_col;
598 		}
599 	}
600 
601 	WATCHDOG_RESET();
602 }
603 #endif /* CONFIG_LCD_LOGO */
604 
605 /*----------------------------------------------------------------------*/
606 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
607 /*
608  * Display the BMP file located at address bmp_image.
609  * Only uncompressed.
610  */
611 int lcd_display_bitmap(ulong bmp_image, int x, int y)
612 {
613 #ifdef CONFIG_ATMEL_LCD
614 	uint *cmap;
615 #elif !defined(CONFIG_MCC200)
616 	ushort *cmap;
617 #endif
618 	ushort i, j;
619 	uchar *fb;
620 	bmp_image_t *bmp=(bmp_image_t *)bmp_image;
621 	uchar *bmap;
622 	ushort padded_line;
623 	unsigned long width, height;
624 	unsigned long pwidth = panel_info.vl_col;
625 	unsigned colors,bpix;
626 	unsigned long compression;
627 #if defined(CONFIG_PXA250)
628 	struct pxafb_info *fbi = &panel_info.pxa;
629 #elif defined(CONFIG_MPC823)
630 	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
631 	volatile cpm8xx_t *cp = &(immr->im_cpm);
632 #endif
633 
634 	if (!((bmp->header.signature[0]=='B') &&
635 		(bmp->header.signature[1]=='M'))) {
636 		printf ("Error: no valid bmp image at %lx\n", bmp_image);
637 		return 1;
638 }
639 
640 	width = le32_to_cpu (bmp->header.width);
641 	height = le32_to_cpu (bmp->header.height);
642 	colors = 1<<le16_to_cpu (bmp->header.bit_count);
643 	compression = le32_to_cpu (bmp->header.compression);
644 
645 	bpix = NBITS(panel_info.vl_bpix);
646 
647 	if ((bpix != 1) && (bpix != 8)) {
648 		printf ("Error: %d bit/pixel mode not supported by U-Boot\n",
649 			bpix);
650 		return 1;
651 	}
652 
653 	if (bpix != le16_to_cpu(bmp->header.bit_count)) {
654 		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
655 			bpix,
656 			le16_to_cpu(bmp->header.bit_count));
657 		return 1;
658 	}
659 
660 	debug ("Display-bmp: %d x %d  with %d colors\n",
661 		(int)width, (int)height, (int)colors);
662 
663 #if !defined(CONFIG_MCC200)
664 	/* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
665 	if (bpix==8) {
666 #if defined(CONFIG_PXA250)
667 		cmap = (ushort *)fbi->palette;
668 #elif defined(CONFIG_MPC823)
669 		cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
670 #elif defined(CONFIG_ATMEL_LCD)
671 		cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
672 #else
673 # error "Don't know location of color map"
674 #endif
675 
676 		/* Set color map */
677 		for (i=0; i<colors; ++i) {
678 			bmp_color_table_entry_t cte = bmp->color_table[i];
679 #if !defined(CONFIG_ATMEL_LCD)
680 			ushort colreg =
681 				( ((cte.red)   << 8) & 0xf800) |
682 				( ((cte.green) << 3) & 0x07e0) |
683 				( ((cte.blue)  >> 3) & 0x001f) ;
684 #ifdef CONFIG_SYS_INVERT_COLORS
685 			*cmap = 0xffff - colreg;
686 #else
687 			*cmap = colreg;
688 #endif
689 #if defined(CONFIG_PXA250)
690 			cmap++;
691 #elif defined(CONFIG_MPC823)
692 			cmap--;
693 #endif
694 #else /* CONFIG_ATMEL_LCD */
695 			lcd_setcolreg(i, cte.red, cte.green, cte.blue);
696 #endif
697 		}
698 	}
699 #endif
700 
701 	/*
702 	 *  BMP format for Monochrome assumes that the state of a
703 	 * pixel is described on a per Bit basis, not per Byte.
704 	 *  So, in case of Monochrome BMP we should align widths
705 	 * on a byte boundary and convert them from Bit to Byte
706 	 * units.
707 	 *  Probably, PXA250 and MPC823 process 1bpp BMP images in
708 	 * their own ways, so make the converting to be MCC200
709 	 * specific.
710 	 */
711 #if defined(CONFIG_MCC200)
712 	if (bpix==1)
713 	{
714 		width = ((width + 7) & ~7) >> 3;
715 		x     = ((x + 7) & ~7) >> 3;
716 		pwidth= ((pwidth + 7) & ~7) >> 3;
717 	}
718 #endif
719 
720 	padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
721 	if ((x + width)>pwidth)
722 		width = pwidth - x;
723 	if ((y + height)>panel_info.vl_row)
724 		height = panel_info.vl_row - y;
725 
726 	bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
727 	fb   = (uchar *) (lcd_base +
728 		(y + height - 1) * lcd_line_length + x);
729 	for (i = 0; i < height; ++i) {
730 		WATCHDOG_RESET();
731 		for (j = 0; j < width ; j++)
732 #if defined(CONFIG_PXA250) || defined(CONFIG_ATMEL_LCD)
733 			*(fb++) = *(bmap++);
734 #elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
735 			*(fb++)=255-*(bmap++);
736 #endif
737 		bmap += (width - padded_line);
738 		fb   -= (width + lcd_line_length);
739 	}
740 
741 	return (0);
742 }
743 #endif
744 
745 #ifdef CONFIG_VIDEO_BMP_GZIP
746 extern bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp);
747 #endif
748 
749 static void *lcd_logo (void)
750 {
751 #ifdef CONFIG_LCD_INFO
752 	char info[80];
753 	char temp[32];
754 #ifdef CONFIG_ATMEL_LCD
755 	int i;
756 	ulong dram_size, nand_size;
757 #endif
758 #endif /* CONFIG_LCD_INFO */
759 
760 #ifdef CONFIG_SPLASH_SCREEN
761 	char *s;
762 	ulong addr;
763 	static int do_splash = 1;
764 
765 	if (do_splash && (s = getenv("splashimage")) != NULL) {
766 		addr = simple_strtoul(s, NULL, 16);
767 		do_splash = 0;
768 
769 #ifdef CONFIG_VIDEO_BMP_GZIP
770 		bmp_image_t *bmp = (bmp_image_t *)addr;
771 		unsigned long len;
772 
773 		if (!((bmp->header.signature[0]=='B') &&
774 		      (bmp->header.signature[1]=='M'))) {
775 			addr = (ulong)gunzip_bmp(addr, &len);
776 		}
777 #endif
778 
779 		if (lcd_display_bitmap (addr, 0, 0) == 0) {
780 			return ((void *)lcd_base);
781 		}
782 	}
783 #endif /* CONFIG_SPLASH_SCREEN */
784 
785 #ifdef CONFIG_LCD_LOGO
786 	bitmap_plot (0, 0);
787 #endif /* CONFIG_LCD_LOGO */
788 
789 #ifdef CONFIG_MPC823
790 # ifdef CONFIG_LCD_INFO
791 	sprintf (info, "%s (%s - %s) ", U_BOOT_VERSION, __DATE__, __TIME__);
792 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y, (uchar *)info, strlen(info));
793 
794 	sprintf (info, "(C) 2008 DENX Software Engineering GmbH");
795 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT,
796 					(uchar *)info, strlen(info));
797 
798 	sprintf (info, "    Wolfgang DENK, wd@denx.de");
799 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 2,
800 					(uchar *)info, strlen(info));
801 #  ifdef CONFIG_LCD_INFO_BELOW_LOGO
802 	sprintf (info, "MPC823 CPU at %s MHz",
803 		strmhz(temp, gd->cpu_clk));
804 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 3,
805 					info, strlen(info));
806 	sprintf (info, "  %ld MB RAM, %ld MB Flash",
807 		gd->ram_size >> 20,
808 		gd->bd->bi_flashsize >> 20 );
809 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
810 					info, strlen(info));
811 #  else
812 	/* leave one blank line */
813 
814 	sprintf (info, "MPC823 CPU at %s MHz, %ld MB RAM, %ld MB Flash",
815 		strmhz(temp, gd->cpu_clk),
816 		gd->ram_size >> 20,
817 		gd->bd->bi_flashsize >> 20 );
818 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
819 					(uchar *)info, strlen(info));
820 
821 #  endif /* CONFIG_LCD_INFO_BELOW_LOGO */
822 # endif /* CONFIG_LCD_INFO */
823 #endif /* CONFIG_MPC823 */
824 
825 #ifdef CONFIG_ATMEL_LCD
826 # ifdef CONFIG_LCD_INFO
827 	sprintf (info, "%s", U_BOOT_VERSION);
828 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y, (uchar *)info, strlen(info));
829 
830 	sprintf (info, "(C) 2008 ATMEL Corp");
831 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT,
832 					(uchar *)info, strlen(info));
833 
834 	sprintf (info, "at91support@atmel.com");
835 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 2,
836 					(uchar *)info, strlen(info));
837 
838 	sprintf (info, "%s CPU at %s MHz",
839 		AT91_CPU_NAME,
840 		strmhz(temp, AT91_MAIN_CLOCK));
841 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 3,
842 					(uchar *)info, strlen(info));
843 
844 	dram_size = 0;
845 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
846 		dram_size += gd->bd->bi_dram[i].size;
847 	nand_size = 0;
848 	for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
849 		nand_size += nand_info[i].size;
850 	sprintf (info, "  %ld MB SDRAM, %ld MB NAND",
851 		dram_size >> 20,
852 		nand_size >> 20 );
853 	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
854 					(uchar *)info, strlen(info));
855 # endif /* CONFIG_LCD_INFO */
856 #endif /* CONFIG_ATMEL_LCD */
857 
858 
859 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
860 	return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
861 #else
862 	return ((void *)lcd_base);
863 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
864 }
865 
866 /************************************************************************/
867 /************************************************************************/
868