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 */
26 /************************************************************************/
27 /* ** HEADER FILES */
28 /************************************************************************/
30 /* #define DEBUG */
32 #include <config.h>
33 #include <common.h>
34 #include <command.h>
35 #include <stdarg.h>
36 #include <search.h>
37 #include <env_callback.h>
38 #include <linux/types.h>
39 #include <stdio_dev.h>
40 #if defined(CONFIG_POST)
41 #include <post.h>
42 #endif
43 #include <lcd.h>
44 #include <watchdog.h>
46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
47 defined(CONFIG_CPU_MONAHANS)
48 #define CONFIG_CPU_PXA
49 #include <asm/byteorder.h>
50 #endif
52 #if defined(CONFIG_MPC823)
53 #include <lcdvideo.h>
54 #endif
56 #if defined(CONFIG_ATMEL_LCD)
57 #include <atmel_lcdc.h>
58 #endif
60 /************************************************************************/
61 /* ** FONT DATA */
62 /************************************************************************/
63 #include <video_font.h> /* Get font data, width and height */
64 #include <video_font_data.h>
66 /************************************************************************/
67 /* ** LOGO DATA */
68 /************************************************************************/
69 #ifdef CONFIG_LCD_LOGO
70 # include <bmp_logo.h> /* Get logo data, width and height */
71 # include <bmp_logo_data.h>
72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
73 # error Default Color Map overlaps with Logo Color Map
74 # endif
75 #endif
77 #ifndef CONFIG_LCD_ALIGNMENT
78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
79 #endif
81 /* By default we scroll by a single line */
82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
83 #define CONFIG_CONSOLE_SCROLL_LINES 1
84 #endif
86 /************************************************************************/
87 /* ** CONSOLE DEFINITIONS & FUNCTIONS */
88 /************************************************************************/
89 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
90 # define CONSOLE_ROWS ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
91 / VIDEO_FONT_HEIGHT)
92 #else
93 # define CONSOLE_ROWS (panel_info.vl_row / VIDEO_FONT_HEIGHT)
94 #endif
96 #define CONSOLE_COLS (panel_info.vl_col / VIDEO_FONT_WIDTH)
97 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length)
98 #define CONSOLE_ROW_FIRST lcd_console_address
99 #define CONSOLE_ROW_SECOND (lcd_console_address + CONSOLE_ROW_SIZE)
100 #define CONSOLE_ROW_LAST (lcd_console_address + CONSOLE_SIZE \
101 - CONSOLE_ROW_SIZE)
102 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
103 #define CONSOLE_SCROLL_SIZE (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
105 #if LCD_BPP == LCD_MONOCHROME
106 # define COLOR_MASK(c) ((c) | (c) << 1 | (c) << 2 | (c) << 3 | \
107 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
108 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
109 # define COLOR_MASK(c) (c)
110 #else
111 # error Unsupported LCD BPP.
112 #endif
114 DECLARE_GLOBAL_DATA_PTR;
116 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
117 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
118 static inline void lcd_putc_xy(ushort x, ushort y, uchar c);
120 static int lcd_init(void *lcdbase);
122 static void *lcd_logo(void);
124 static int lcd_getbgcolor(void);
125 static void lcd_setfgcolor(int color);
126 static void lcd_setbgcolor(int color);
128 static int lcd_color_fg;
129 static int lcd_color_bg;
130 int lcd_line_length;
132 char lcd_is_enabled = 0;
134 static short console_col;
135 static short console_row;
137 static void *lcd_console_address;
138 static void *lcd_base; /* Start of framebuffer memory */
140 static char lcd_flush_dcache; /* 1 to flush dcache after each lcd update */
142 /************************************************************************/
144 /* Flush LCD activity to the caches */
145 void lcd_sync(void)
146 {
147 /*
148 * flush_dcache_range() is declared in common.h but it seems that some
149 * architectures do not actually implement it. Is there a way to find
150 * out whether it exists? For now, ARM is safe.
151 */
152 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
153 int line_length;
155 if (lcd_flush_dcache)
156 flush_dcache_range((u32)lcd_base,
157 (u32)(lcd_base + lcd_get_size(&line_length)));
158 #endif
159 }
161 void lcd_set_flush_dcache(int flush)
162 {
163 lcd_flush_dcache = (flush != 0);
164 }
166 /*----------------------------------------------------------------------*/
168 static void console_scrollup(void)
169 {
170 const int rows = CONFIG_CONSOLE_SCROLL_LINES;
172 /* Copy up rows ignoring those that will be overwritten */
173 memcpy(CONSOLE_ROW_FIRST,
174 lcd_console_address + CONSOLE_ROW_SIZE * rows,
175 CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
177 /* Clear the last rows */
178 memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
179 COLOR_MASK(lcd_color_bg),
180 CONSOLE_ROW_SIZE * rows);
182 lcd_sync();
183 console_row -= rows;
184 }
186 /*----------------------------------------------------------------------*/
188 static inline void console_back(void)
189 {
190 if (--console_col < 0) {
191 console_col = CONSOLE_COLS-1 ;
192 if (--console_row < 0)
193 console_row = 0;
194 }
196 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
197 console_row * VIDEO_FONT_HEIGHT, ' ');
198 }
200 /*----------------------------------------------------------------------*/
202 static inline void console_newline(void)
203 {
204 console_col = 0;
206 /* Check if we need to scroll the terminal */
207 if (++console_row >= CONSOLE_ROWS)
208 console_scrollup();
209 else
210 lcd_sync();
211 }
213 /*----------------------------------------------------------------------*/
215 void lcd_putc(const char c)
216 {
217 if (!lcd_is_enabled) {
218 serial_putc(c);
220 return;
221 }
223 switch (c) {
224 case '\r':
225 console_col = 0;
227 return;
228 case '\n':
229 console_newline();
231 return;
232 case '\t': /* Tab (8 chars alignment) */
233 console_col += 8;
234 console_col &= ~7;
236 if (console_col >= CONSOLE_COLS)
237 console_newline();
239 return;
240 case '\b':
241 console_back();
243 return;
244 default:
245 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
246 console_row * VIDEO_FONT_HEIGHT, c);
247 if (++console_col >= CONSOLE_COLS)
248 console_newline();
249 }
250 }
252 /*----------------------------------------------------------------------*/
254 void lcd_puts(const char *s)
255 {
256 if (!lcd_is_enabled) {
257 serial_puts(s);
259 return;
260 }
262 while (*s)
263 lcd_putc(*s++);
265 lcd_sync();
266 }
268 /*----------------------------------------------------------------------*/
270 void lcd_printf(const char *fmt, ...)
271 {
272 va_list args;
273 char buf[CONFIG_SYS_PBSIZE];
275 va_start(args, fmt);
276 vsprintf(buf, fmt, args);
277 va_end(args);
279 lcd_puts(buf);
280 }
282 /************************************************************************/
283 /* ** Low-Level Graphics Routines */
284 /************************************************************************/
286 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
287 {
288 uchar *dest;
289 ushort row;
291 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
292 y += BMP_LOGO_HEIGHT;
293 #endif
295 #if LCD_BPP == LCD_MONOCHROME
296 ushort off = x * (1 << LCD_BPP) % 8;
297 #endif
299 dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
301 for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
302 uchar *s = str;
303 int i;
304 #if LCD_BPP == LCD_COLOR16
305 ushort *d = (ushort *)dest;
306 #else
307 uchar *d = dest;
308 #endif
310 #if LCD_BPP == LCD_MONOCHROME
311 uchar rest = *d & -(1 << (8 - off));
312 uchar sym;
313 #endif
314 for (i = 0; i < count; ++i) {
315 uchar c, bits;
317 c = *s++;
318 bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
320 #if LCD_BPP == LCD_MONOCHROME
321 sym = (COLOR_MASK(lcd_color_fg) & bits) |
322 (COLOR_MASK(lcd_color_bg) & ~bits);
324 *d++ = rest | (sym >> off);
325 rest = sym << (8-off);
326 #elif LCD_BPP == LCD_COLOR8
327 for (c = 0; c < 8; ++c) {
328 *d++ = (bits & 0x80) ?
329 lcd_color_fg : lcd_color_bg;
330 bits <<= 1;
331 }
332 #elif LCD_BPP == LCD_COLOR16
333 for (c = 0; c < 8; ++c) {
334 *d++ = (bits & 0x80) ?
335 lcd_color_fg : lcd_color_bg;
336 bits <<= 1;
337 }
338 #endif
339 }
340 #if LCD_BPP == LCD_MONOCHROME
341 *d = rest | (*d & ((1 << (8 - off)) - 1));
342 #endif
343 }
344 }
346 /*----------------------------------------------------------------------*/
348 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
349 {
350 lcd_drawchars(x, y, s, strlen((char *)s));
351 }
353 /*----------------------------------------------------------------------*/
355 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
356 {
357 lcd_drawchars(x, y, &c, 1);
358 }
360 /************************************************************************/
361 /** Small utility to check that you got the colours right */
362 /************************************************************************/
363 #ifdef LCD_TEST_PATTERN
365 #define N_BLK_VERT 2
366 #define N_BLK_HOR 3
368 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
369 CONSOLE_COLOR_RED, CONSOLE_COLOR_GREEN, CONSOLE_COLOR_YELLOW,
370 CONSOLE_COLOR_BLUE, CONSOLE_COLOR_MAGENTA, CONSOLE_COLOR_CYAN,
371 };
373 static void test_pattern(void)
374 {
375 ushort v_max = panel_info.vl_row;
376 ushort h_max = panel_info.vl_col;
377 ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
378 ushort h_step = (h_max + N_BLK_HOR - 1) / N_BLK_HOR;
379 ushort v, h;
380 uchar *pix = (uchar *)lcd_base;
382 printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
383 h_max, v_max, h_step, v_step);
385 /* WARNING: Code silently assumes 8bit/pixel */
386 for (v = 0; v < v_max; ++v) {
387 uchar iy = v / v_step;
388 for (h = 0; h < h_max; ++h) {
389 uchar ix = N_BLK_HOR * iy + h / h_step;
390 *pix++ = test_colors[ix];
391 }
392 }
393 }
394 #endif /* LCD_TEST_PATTERN */
397 /************************************************************************/
398 /* ** GENERIC Initialization Routines */
399 /************************************************************************/
401 int lcd_get_size(int *line_length)
402 {
403 *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
404 return *line_length * panel_info.vl_row;
405 }
407 int drv_lcd_init(void)
408 {
409 struct stdio_dev lcddev;
410 int rc;
412 lcd_base = (void *) gd->fb_base;
414 lcd_get_size(&lcd_line_length);
416 lcd_init(lcd_base); /* LCD initialization */
418 /* Device initialization */
419 memset(&lcddev, 0, sizeof(lcddev));
421 strcpy(lcddev.name, "lcd");
422 lcddev.ext = 0; /* No extensions */
423 lcddev.flags = DEV_FLAGS_OUTPUT; /* Output only */
424 lcddev.putc = lcd_putc; /* 'putc' function */
425 lcddev.puts = lcd_puts; /* 'puts' function */
427 rc = stdio_register(&lcddev);
429 return (rc == 0) ? 1 : rc;
430 }
432 /*----------------------------------------------------------------------*/
433 void lcd_clear(void)
434 {
435 #if LCD_BPP == LCD_MONOCHROME
436 /* Setting the palette */
437 lcd_initcolregs();
439 #elif LCD_BPP == LCD_COLOR8
440 /* Setting the palette */
441 lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
442 lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
443 lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
444 lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
445 lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
446 lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
447 lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
448 lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
449 lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
450 #endif
452 #ifndef CONFIG_SYS_WHITE_ON_BLACK
453 lcd_setfgcolor(CONSOLE_COLOR_BLACK);
454 lcd_setbgcolor(CONSOLE_COLOR_WHITE);
455 #else
456 lcd_setfgcolor(CONSOLE_COLOR_WHITE);
457 lcd_setbgcolor(CONSOLE_COLOR_BLACK);
458 #endif /* CONFIG_SYS_WHITE_ON_BLACK */
460 #ifdef LCD_TEST_PATTERN
461 test_pattern();
462 #else
463 /* set framebuffer to background color */
464 memset((char *)lcd_base,
465 COLOR_MASK(lcd_getbgcolor()),
466 lcd_line_length * panel_info.vl_row);
467 #endif
468 /* Paint the logo and retrieve LCD base address */
469 debug("[LCD] Drawing the logo...\n");
470 lcd_console_address = lcd_logo();
472 console_col = 0;
473 console_row = 0;
474 lcd_sync();
475 }
477 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
478 char *const argv[])
479 {
480 lcd_clear();
481 return 0;
482 }
484 U_BOOT_CMD(
485 cls, 1, 1, do_lcd_clear,
486 "clear screen",
487 ""
488 );
490 /*----------------------------------------------------------------------*/
492 static int lcd_init(void *lcdbase)
493 {
494 /* Initialize the lcd controller */
495 debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
497 lcd_ctrl_init(lcdbase);
498 lcd_is_enabled = 1;
499 lcd_clear();
500 lcd_enable();
502 /* Initialize the console */
503 console_col = 0;
504 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
505 console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
506 #else
507 console_row = 1; /* leave 1 blank line below logo */
508 #endif
510 return 0;
511 }
514 /************************************************************************/
515 /* ** ROM capable initialization part - needed to reserve FB memory */
516 /************************************************************************/
517 /*
518 * This is called early in the system initialization to grab memory
519 * for the LCD controller.
520 * Returns new address for monitor, after reserving LCD buffer memory
521 *
522 * Note that this is running from ROM, so no write access to global data.
523 */
524 ulong lcd_setmem(ulong addr)
525 {
526 ulong size;
527 int line_length;
529 debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
530 panel_info.vl_row, NBITS(panel_info.vl_bpix));
532 size = lcd_get_size(&line_length);
534 /* Round up to nearest full page, or MMU section if defined */
535 size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
536 addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
538 /* Allocate pages for the frame buffer. */
539 addr -= size;
541 debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
542 size >> 10, addr);
544 return addr;
545 }
547 /*----------------------------------------------------------------------*/
549 static void lcd_setfgcolor(int color)
550 {
551 lcd_color_fg = color;
552 }
554 /*----------------------------------------------------------------------*/
556 static void lcd_setbgcolor(int color)
557 {
558 lcd_color_bg = color;
559 }
561 /*----------------------------------------------------------------------*/
563 int lcd_getfgcolor(void)
564 {
565 return lcd_color_fg;
566 }
568 /*----------------------------------------------------------------------*/
570 static int lcd_getbgcolor(void)
571 {
572 return lcd_color_bg;
573 }
575 /************************************************************************/
576 /* ** Chipset depending Bitmap / Logo stuff... */
577 /************************************************************************/
578 static inline ushort *configuration_get_cmap(void)
579 {
580 #if defined CONFIG_CPU_PXA
581 struct pxafb_info *fbi = &panel_info.pxa;
582 return (ushort *)fbi->palette;
583 #elif defined(CONFIG_MPC823)
584 immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
585 cpm8xx_t *cp = &(immr->im_cpm);
586 return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
587 #elif defined(CONFIG_ATMEL_LCD)
588 return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
589 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
590 return panel_info.cmap;
591 #elif defined(CONFIG_LCD_LOGO)
592 return bmp_logo_palette;
593 #else
594 return NULL;
595 #endif
596 }
598 #ifdef CONFIG_LCD_LOGO
599 void bitmap_plot(int x, int y)
600 {
601 #ifdef CONFIG_ATMEL_LCD
602 uint *cmap = (uint *)bmp_logo_palette;
603 #else
604 ushort *cmap = (ushort *)bmp_logo_palette;
605 #endif
606 ushort i, j;
607 uchar *bmap;
608 uchar *fb;
609 ushort *fb16;
610 #if defined(CONFIG_MPC823)
611 immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
612 cpm8xx_t *cp = &(immr->im_cpm);
613 #endif
614 unsigned bpix = NBITS(panel_info.vl_bpix);
616 debug("Logo: width %d height %d colors %d cmap %d\n",
617 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
618 ARRAY_SIZE(bmp_logo_palette));
620 bmap = &bmp_logo_bitmap[0];
621 fb = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
623 if (bpix < 12) {
624 /* Leave room for default color map
625 * default case: generic system with no cmap (most likely 16bpp)
626 * cmap was set to the source palette, so no change is done.
627 * This avoids even more ifdefs in the next stanza
628 */
629 #if defined(CONFIG_MPC823)
630 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
631 #elif defined(CONFIG_ATMEL_LCD)
632 cmap = (uint *)configuration_get_cmap();
633 #else
634 cmap = configuration_get_cmap();
635 #endif
637 WATCHDOG_RESET();
639 /* Set color map */
640 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
641 ushort colreg = bmp_logo_palette[i];
642 #ifdef CONFIG_ATMEL_LCD
643 uint lut_entry;
644 #ifdef CONFIG_ATMEL_LCD_BGR555
645 lut_entry = ((colreg & 0x000F) << 11) |
646 ((colreg & 0x00F0) << 2) |
647 ((colreg & 0x0F00) >> 7);
648 #else /* CONFIG_ATMEL_LCD_RGB565 */
649 lut_entry = ((colreg & 0x000F) << 1) |
650 ((colreg & 0x00F0) << 3) |
651 ((colreg & 0x0F00) << 4);
652 #endif
653 *(cmap + BMP_LOGO_OFFSET) = lut_entry;
654 cmap++;
655 #else /* !CONFIG_ATMEL_LCD */
656 #ifdef CONFIG_SYS_INVERT_COLORS
657 *cmap++ = 0xffff - colreg;
658 #else
659 *cmap++ = colreg;
660 #endif
661 #endif /* CONFIG_ATMEL_LCD */
662 }
664 WATCHDOG_RESET();
666 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
667 memcpy(fb, bmap, BMP_LOGO_WIDTH);
668 bmap += BMP_LOGO_WIDTH;
669 fb += panel_info.vl_col;
670 }
671 }
672 else { /* true color mode */
673 u16 col16;
674 fb16 = (ushort *)fb;
675 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
676 for (j = 0; j < BMP_LOGO_WIDTH; j++) {
677 col16 = bmp_logo_palette[(bmap[j]-16)];
678 fb16[j] =
679 ((col16 & 0x000F) << 1) |
680 ((col16 & 0x00F0) << 3) |
681 ((col16 & 0x0F00) << 4);
682 }
683 bmap += BMP_LOGO_WIDTH;
684 fb16 += panel_info.vl_col;
685 }
686 }
688 WATCHDOG_RESET();
689 lcd_sync();
690 }
691 #else
692 static inline void bitmap_plot(int x, int y) {}
693 #endif /* CONFIG_LCD_LOGO */
695 /*----------------------------------------------------------------------*/
696 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
697 /*
698 * Display the BMP file located at address bmp_image.
699 * Only uncompressed.
700 */
702 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
703 #define BMP_ALIGN_CENTER 0x7FFF
705 static void splash_align_axis(int *axis, unsigned long panel_size,
706 unsigned long picture_size)
707 {
708 unsigned long panel_picture_delta = panel_size - picture_size;
709 unsigned long axis_alignment;
711 if (*axis == BMP_ALIGN_CENTER)
712 axis_alignment = panel_picture_delta / 2;
713 else if (*axis < 0)
714 axis_alignment = panel_picture_delta + *axis + 1;
715 else
716 return;
718 *axis = max(0, axis_alignment);
719 }
720 #endif
723 #ifdef CONFIG_LCD_BMP_RLE8
725 #define BMP_RLE8_ESCAPE 0
726 #define BMP_RLE8_EOL 0
727 #define BMP_RLE8_EOBMP 1
728 #define BMP_RLE8_DELTA 2
730 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
731 int cnt)
732 {
733 while (cnt > 0) {
734 *(*fbp)++ = cmap[*bmap++];
735 cnt--;
736 }
737 }
739 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
740 {
741 ushort *fb = *fbp;
742 int cnt_8copy = cnt >> 3;
744 cnt -= cnt_8copy << 3;
745 while (cnt_8copy > 0) {
746 *fb++ = c;
747 *fb++ = c;
748 *fb++ = c;
749 *fb++ = c;
750 *fb++ = c;
751 *fb++ = c;
752 *fb++ = c;
753 *fb++ = c;
754 cnt_8copy--;
755 }
756 while (cnt > 0) {
757 *fb++ = c;
758 cnt--;
759 }
760 *fbp = fb;
761 }
763 /*
764 * Do not call this function directly, must be called from lcd_display_bitmap.
765 */
766 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
767 int x_off, int y_off)
768 {
769 uchar *bmap;
770 ulong width, height;
771 ulong cnt, runlen;
772 int x, y;
773 int decode = 1;
775 width = le32_to_cpu(bmp->header.width);
776 height = le32_to_cpu(bmp->header.height);
777 bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
779 x = 0;
780 y = height - 1;
782 while (decode) {
783 if (bmap[0] == BMP_RLE8_ESCAPE) {
784 switch (bmap[1]) {
785 case BMP_RLE8_EOL:
786 /* end of line */
787 bmap += 2;
788 x = 0;
789 y--;
790 /* 16bpix, 2-byte per pixel, width should *2 */
791 fb -= (width * 2 + lcd_line_length);
792 break;
793 case BMP_RLE8_EOBMP:
794 /* end of bitmap */
795 decode = 0;
796 break;
797 case BMP_RLE8_DELTA:
798 /* delta run */
799 x += bmap[2];
800 y -= bmap[3];
801 /* 16bpix, 2-byte per pixel, x should *2 */
802 fb = (uchar *) (lcd_base + (y + y_off - 1)
803 * lcd_line_length + (x + x_off) * 2);
804 bmap += 4;
805 break;
806 default:
807 /* unencoded run */
808 runlen = bmap[1];
809 bmap += 2;
810 if (y < height) {
811 if (x < width) {
812 if (x + runlen > width)
813 cnt = width - x;
814 else
815 cnt = runlen;
816 draw_unencoded_bitmap(
817 (ushort **)&fb,
818 bmap, cmap, cnt);
819 }
820 x += runlen;
821 }
822 bmap += runlen;
823 if (runlen & 1)
824 bmap++;
825 }
826 } else {
827 /* encoded run */
828 if (y < height) {
829 runlen = bmap[0];
830 if (x < width) {
831 /* aggregate the same code */
832 while (bmap[0] == 0xff &&
833 bmap[2] != BMP_RLE8_ESCAPE &&
834 bmap[1] == bmap[3]) {
835 runlen += bmap[2];
836 bmap += 2;
837 }
838 if (x + runlen > width)
839 cnt = width - x;
840 else
841 cnt = runlen;
842 draw_encoded_bitmap((ushort **)&fb,
843 cmap[bmap[1]], cnt);
844 }
845 x += runlen;
846 }
847 bmap += 2;
848 }
849 }
850 }
851 #endif
853 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
854 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
855 #else
856 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
857 #endif
859 #if defined(CONFIG_BMP_16BPP)
860 #if defined(CONFIG_ATMEL_LCD_BGR555)
861 static inline void fb_put_word(uchar **fb, uchar **from)
862 {
863 *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
864 *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
865 *from += 2;
866 }
867 #else
868 static inline void fb_put_word(uchar **fb, uchar **from)
869 {
870 *(*fb)++ = *(*from)++;
871 *(*fb)++ = *(*from)++;
872 }
873 #endif
874 #endif /* CONFIG_BMP_16BPP */
876 int lcd_display_bitmap(ulong bmp_image, int x, int y)
877 {
878 #if !defined(CONFIG_MCC200)
879 ushort *cmap = NULL;
880 #endif
881 ushort *cmap_base = NULL;
882 ushort i, j;
883 uchar *fb;
884 bmp_image_t *bmp=(bmp_image_t *)bmp_image;
885 uchar *bmap;
886 ushort padded_width;
887 unsigned long width, height, byte_width;
888 unsigned long pwidth = panel_info.vl_col;
889 unsigned colors, bpix, bmp_bpix;
891 if (!bmp || !(bmp->header.signature[0] == 'B' &&
892 bmp->header.signature[1] == 'M')) {
893 printf("Error: no valid bmp image at %lx\n", bmp_image);
895 return 1;
896 }
898 width = le32_to_cpu(bmp->header.width);
899 height = le32_to_cpu(bmp->header.height);
900 bmp_bpix = le16_to_cpu(bmp->header.bit_count);
901 colors = 1 << bmp_bpix;
903 bpix = NBITS(panel_info.vl_bpix);
905 if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
906 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
907 bpix, bmp_bpix);
909 return 1;
910 }
912 /* We support displaying 8bpp BMPs on 16bpp LCDs */
913 if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
914 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
915 bpix,
916 le16_to_cpu(bmp->header.bit_count));
918 return 1;
919 }
921 debug("Display-bmp: %d x %d with %d colors\n",
922 (int)width, (int)height, (int)colors);
924 #if !defined(CONFIG_MCC200)
925 /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
926 if (bmp_bpix == 8) {
927 cmap = configuration_get_cmap();
928 cmap_base = cmap;
930 /* Set color map */
931 for (i = 0; i < colors; ++i) {
932 bmp_color_table_entry_t cte = bmp->color_table[i];
933 #if !defined(CONFIG_ATMEL_LCD)
934 ushort colreg =
935 ( ((cte.red) << 8) & 0xf800) |
936 ( ((cte.green) << 3) & 0x07e0) |
937 ( ((cte.blue) >> 3) & 0x001f) ;
938 #ifdef CONFIG_SYS_INVERT_COLORS
939 *cmap = 0xffff - colreg;
940 #else
941 *cmap = colreg;
942 #endif
943 #if defined(CONFIG_MPC823)
944 cmap--;
945 #else
946 cmap++;
947 #endif
948 #else /* CONFIG_ATMEL_LCD */
949 lcd_setcolreg(i, cte.red, cte.green, cte.blue);
950 #endif
951 }
952 }
953 #endif
955 /*
956 * BMP format for Monochrome assumes that the state of a
957 * pixel is described on a per Bit basis, not per Byte.
958 * So, in case of Monochrome BMP we should align widths
959 * on a byte boundary and convert them from Bit to Byte
960 * units.
961 * Probably, PXA250 and MPC823 process 1bpp BMP images in
962 * their own ways, so make the converting to be MCC200
963 * specific.
964 */
965 #if defined(CONFIG_MCC200)
966 if (bpix == 1) {
967 width = ((width + 7) & ~7) >> 3;
968 x = ((x + 7) & ~7) >> 3;
969 pwidth= ((pwidth + 7) & ~7) >> 3;
970 }
971 #endif
973 padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
975 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
976 splash_align_axis(&x, pwidth, width);
977 splash_align_axis(&y, panel_info.vl_row, height);
978 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
980 if ((x + width) > pwidth)
981 width = pwidth - x;
982 if ((y + height) > panel_info.vl_row)
983 height = panel_info.vl_row - y;
985 bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
986 fb = (uchar *) (lcd_base +
987 (y + height - 1) * lcd_line_length + x * bpix / 8);
989 switch (bmp_bpix) {
990 case 1: /* pass through */
991 case 8:
992 #ifdef CONFIG_LCD_BMP_RLE8
993 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
994 if (bpix != 16) {
995 /* TODO implement render code for bpix != 16 */
996 printf("Error: only support 16 bpix");
997 return 1;
998 }
999 lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1000 break;
1001 }
1002 #endif
1004 if (bpix != 16)
1005 byte_width = width;
1006 else
1007 byte_width = width * 2;
1009 for (i = 0; i < height; ++i) {
1010 WATCHDOG_RESET();
1011 for (j = 0; j < width; j++) {
1012 if (bpix != 16) {
1013 FB_PUT_BYTE(fb, bmap);
1014 } else {
1015 *(uint16_t *)fb = cmap_base[*(bmap++)];
1016 fb += sizeof(uint16_t) / sizeof(*fb);
1017 }
1018 }
1019 bmap += (padded_width - width);
1020 fb -= byte_width + lcd_line_length;
1021 }
1022 break;
1024 #if defined(CONFIG_BMP_16BPP)
1025 case 16:
1026 for (i = 0; i < height; ++i) {
1027 WATCHDOG_RESET();
1028 for (j = 0; j < width; j++)
1029 fb_put_word(&fb, &bmap);
1031 bmap += (padded_width - width) * 2;
1032 fb -= width * 2 + lcd_line_length;
1033 }
1034 break;
1035 #endif /* CONFIG_BMP_16BPP */
1037 #if defined(CONFIG_BMP_32BPP)
1038 case 32:
1039 for (i = 0; i < height; ++i) {
1040 for (j = 0; j < width; j++) {
1041 *(fb++) = *(bmap++);
1042 *(fb++) = *(bmap++);
1043 *(fb++) = *(bmap++);
1044 *(fb++) = *(bmap++);
1045 }
1046 fb -= lcd_line_length + width * (bpix / 8);
1047 }
1048 break;
1049 #endif /* CONFIG_BMP_32BPP */
1050 default:
1051 break;
1052 };
1054 lcd_sync();
1055 return 0;
1056 }
1057 #endif
1059 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1060 static inline int splash_screen_prepare(void)
1061 {
1062 return board_splash_screen_prepare();
1063 }
1064 #else
1065 static inline int splash_screen_prepare(void)
1066 {
1067 return 0;
1068 }
1069 #endif
1071 static void *lcd_logo(void)
1072 {
1073 #ifdef CONFIG_SPLASH_SCREEN
1074 char *s;
1075 ulong addr;
1076 static int do_splash = 1;
1078 if (do_splash && (s = getenv("splashimage")) != NULL) {
1079 int x = 0, y = 0;
1080 do_splash = 0;
1082 if (splash_screen_prepare())
1083 return (void *)gd->fb_base;
1085 addr = simple_strtoul (s, NULL, 16);
1086 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1087 s = getenv("splashpos");
1088 if (s != NULL) {
1089 if (s[0] == 'm')
1090 x = BMP_ALIGN_CENTER;
1091 else
1092 x = simple_strtol(s, NULL, 0);
1094 s = strchr(s + 1, ',');
1095 if (s != NULL) {
1096 if (s[1] == 'm')
1097 y = BMP_ALIGN_CENTER;
1098 else
1099 y = simple_strtol (s + 1, NULL, 0);
1100 }
1101 }
1102 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1104 if (bmp_display(addr, x, y) == 0)
1105 return (void *)lcd_base;
1106 }
1107 #endif /* CONFIG_SPLASH_SCREEN */
1109 bitmap_plot(0, 0);
1111 #ifdef CONFIG_LCD_INFO
1112 console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1113 console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1114 lcd_show_board_info();
1115 #endif /* CONFIG_LCD_INFO */
1117 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1118 return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1119 #else
1120 return (void *)lcd_base;
1121 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1122 }
1124 #ifdef CONFIG_SPLASHIMAGE_GUARD
1125 static int on_splashimage(const char *name, const char *value, enum env_op op,
1126 int flags)
1127 {
1128 ulong addr;
1129 int aligned;
1131 if (op == env_op_delete)
1132 return 0;
1134 addr = simple_strtoul(value, NULL, 16);
1135 /* See README.displaying-bmps */
1136 aligned = (addr % 4 == 2);
1137 if (!aligned) {
1138 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1139 return -1;
1140 }
1142 return 0;
1143 }
1145 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1146 #endif
1148 void lcd_position_cursor(unsigned col, unsigned row)
1149 {
1150 console_col = min(col, CONSOLE_COLS - 1);
1151 console_row = min(row, CONSOLE_ROWS - 1);
1152 }
1154 int lcd_get_pixel_width(void)
1155 {
1156 return panel_info.vl_col;
1157 }
1159 int lcd_get_pixel_height(void)
1160 {
1161 return panel_info.vl_row;
1162 }
1164 int lcd_get_screen_rows(void)
1165 {
1166 return CONSOLE_ROWS;
1167 }
1169 int lcd_get_screen_columns(void)
1170 {
1171 return CONSOLE_COLS;
1172 }