2 * Common LCD routines for supported CPUs
4 * (C) Copyright 2001-2002
5 * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
7 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 /************************************************************************/
28 /************************************************************************/
37 #include <linux/types.h>
39 #if defined(CONFIG_POST)
45 #if defined(CONFIG_PXA250)
46 #include <asm/byteorder.h>
49 #if defined(CONFIG_MPC823)
56 /************************************************************************/
58 /************************************************************************/
59 #include <video_font.h> /* Get font data, width and height */
61 /************************************************************************/
63 /************************************************************************/
64 #ifdef CONFIG_LCD_LOGO
65 # include <bmp_logo.h> /* Get logo data, width and height */
66 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET)
67 # error Default Color Map overlaps with Logo Color Map
71 ulong lcd_setmem (ulong addr);
73 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count);
74 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
75 static inline void lcd_putc_xy (ushort x, ushort y, uchar c);
77 static int lcd_init (void *lcdbase);
79 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
80 extern void lcd_ctrl_init (void *lcdbase);
81 extern void lcd_enable (void);
82 static void *lcd_logo (void);
85 #if LCD_BPP == LCD_COLOR8
86 extern void lcd_setcolreg (ushort regno,
87 ushort red, ushort green, ushort blue);
89 #if LCD_BPP == LCD_MONOCHROME
90 extern void lcd_initcolregs (void);
93 static int lcd_getbgcolor (void);
94 static void lcd_setfgcolor (int color);
95 static void lcd_setbgcolor (int color);
97 char lcd_is_enabled = 0;
98 extern vidinfo_t panel_info;
100 #ifdef NOT_USED_SO_FAR
101 static void lcd_getcolreg (ushort regno,
102 ushort *red, ushort *green, ushort *blue);
103 static int lcd_getfgcolor (void);
104 #endif /* NOT_USED_SO_FAR */
106 /************************************************************************/
108 /*----------------------------------------------------------------------*/
110 static void console_scrollup (void)
113 /* Copy up rows ignoring the first one */
114 memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
116 /* Clear the last one */
117 memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
120 * Poor attempt to optimize speed by moving "long"s.
121 * But the code is ugly, and not a bit faster :-(
123 ulong *t = (ulong *)CONSOLE_ROW_FIRST;
124 ulong *s = (ulong *)CONSOLE_ROW_SECOND;
125 ulong l = CONSOLE_SCROLL_SIZE / sizeof(ulong);
126 uchar c = lcd_color_bg & 0xFF;
127 ulong val= (c<<24) | (c<<16) | (c<<8) | c;
132 t = (ulong *)CONSOLE_ROW_LAST;
133 l = CONSOLE_ROW_SIZE / sizeof(ulong);
140 /*----------------------------------------------------------------------*/
142 static inline void console_back (void)
144 if (--console_col < 0) {
145 console_col = CONSOLE_COLS-1 ;
146 if (--console_row < 0) {
151 lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
152 console_row * VIDEO_FONT_HEIGHT,
156 /*----------------------------------------------------------------------*/
158 static inline void console_newline (void)
163 /* Check if we need to scroll the terminal */
164 if (console_row >= CONSOLE_ROWS) {
165 /* Scroll everything up */
166 console_scrollup () ;
171 /*----------------------------------------------------------------------*/
173 void lcd_putc (const char c)
175 if (!lcd_is_enabled) {
181 case '\r': console_col = 0;
184 case '\n': console_newline();
187 case '\t': /* Tab (8 chars alignment) */
191 if (console_col >= CONSOLE_COLS) {
196 case '\b': console_back();
199 default: lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
200 console_row * VIDEO_FONT_HEIGHT,
202 if (++console_col >= CONSOLE_COLS) {
210 /*----------------------------------------------------------------------*/
212 void lcd_puts (const char *s)
214 if (!lcd_is_enabled) {
224 /************************************************************************/
225 /* ** Low-Level Graphics Routines */
226 /************************************************************************/
228 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
233 dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
234 off = x * (1 << LCD_BPP) % 8;
236 for (row=0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
241 #if LCD_BPP == LCD_MONOCHROME
242 uchar rest = *d & -(1 << (8-off));
245 for (i=0; i<count; ++i) {
249 bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
251 #if LCD_BPP == LCD_MONOCHROME
252 sym = (COLOR_MASK(lcd_color_fg) & bits) |
253 (COLOR_MASK(lcd_color_bg) & ~bits);
255 *d++ = rest | (sym >> off);
256 rest = sym << (8-off);
257 #elif LCD_BPP == LCD_COLOR8
258 for (c=0; c<8; ++c) {
259 *d++ = (bits & 0x80) ?
260 lcd_color_fg : lcd_color_bg;
263 #elif LCD_BPP == LCD_COLOR16
264 for (c=0; c<16; ++c) {
265 *d++ = (bits & 0x80) ?
266 lcd_color_fg : lcd_color_bg;
271 #if LCD_BPP == LCD_MONOCHROME
272 *d = rest | (*d & ((1 << (8-off)) - 1));
277 /*----------------------------------------------------------------------*/
279 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
281 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
282 lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen ((char *)s));
284 lcd_drawchars (x, y, s, strlen ((char *)s));
288 /*----------------------------------------------------------------------*/
290 static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
292 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
293 lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
295 lcd_drawchars (x, y, &c, 1);
299 /************************************************************************/
300 /** Small utility to check that you got the colours right */
301 /************************************************************************/
302 #ifdef LCD_TEST_PATTERN
307 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
308 CONSOLE_COLOR_RED, CONSOLE_COLOR_GREEN, CONSOLE_COLOR_YELLOW,
309 CONSOLE_COLOR_BLUE, CONSOLE_COLOR_MAGENTA, CONSOLE_COLOR_CYAN,
312 static void test_pattern (void)
314 ushort v_max = panel_info.vl_row;
315 ushort h_max = panel_info.vl_col;
316 ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
317 ushort h_step = (h_max + N_BLK_HOR - 1) / N_BLK_HOR;
319 uchar *pix = (uchar *)lcd_base;
321 printf ("[LCD] Test Pattern: %d x %d [%d x %d]\n",
322 h_max, v_max, h_step, v_step);
324 /* WARNING: Code silently assumes 8bit/pixel */
325 for (v=0; v<v_max; ++v) {
326 uchar iy = v / v_step;
327 for (h=0; h<h_max; ++h) {
328 uchar ix = N_BLK_HOR * iy + (h/h_step);
329 *pix++ = test_colors[ix];
333 #endif /* LCD_TEST_PATTERN */
336 /************************************************************************/
337 /* ** GENERIC Initialization Routines */
338 /************************************************************************/
340 int drv_lcd_init (void)
342 DECLARE_GLOBAL_DATA_PTR;
347 lcd_base = (void *)(gd->fb_base);
349 lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
351 lcd_init (lcd_base); /* LCD initialization */
353 /* Device initialization */
354 memset (&lcddev, 0, sizeof (lcddev));
356 strcpy (lcddev.name, "lcd");
357 lcddev.ext = 0; /* No extensions */
358 lcddev.flags = DEV_FLAGS_OUTPUT; /* Output only */
359 lcddev.putc = lcd_putc; /* 'putc' function */
360 lcddev.puts = lcd_puts; /* 'puts' function */
362 rc = device_register (&lcddev);
364 return (rc == 0) ? 1 : rc;
367 /*----------------------------------------------------------------------*/
368 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
370 #if LCD_BPP == LCD_MONOCHROME
371 /* Setting the palette */
374 #elif LCD_BPP == LCD_COLOR8
375 /* Setting the palette */
376 lcd_setcolreg (CONSOLE_COLOR_BLACK, 0, 0, 0);
377 lcd_setcolreg (CONSOLE_COLOR_RED, 0xFF, 0, 0);
378 lcd_setcolreg (CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
379 lcd_setcolreg (CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
380 lcd_setcolreg (CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
381 lcd_setcolreg (CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
382 lcd_setcolreg (CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
383 lcd_setcolreg (CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
384 lcd_setcolreg (CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
387 #ifndef CFG_WHITE_ON_BLACK
388 lcd_setfgcolor (CONSOLE_COLOR_BLACK);
389 lcd_setbgcolor (CONSOLE_COLOR_WHITE);
391 lcd_setfgcolor (CONSOLE_COLOR_WHITE);
392 lcd_setbgcolor (CONSOLE_COLOR_BLACK);
393 #endif /* CFG_WHITE_ON_BLACK */
395 #ifdef LCD_TEST_PATTERN
398 /* set framebuffer to background color */
399 memset ((char *)lcd_base,
400 COLOR_MASK(lcd_getbgcolor()),
401 lcd_line_length*panel_info.vl_row);
403 /* Paint the logo and retrieve LCD base address */
404 debug ("[LCD] Drawing the logo...\n");
405 lcd_console_address = lcd_logo ();
414 cls, 1, 1, lcd_clear,
415 "cls - clear screen\n",
419 /*----------------------------------------------------------------------*/
421 static int lcd_init (void *lcdbase)
423 /* Initialize the lcd controller */
424 debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
426 lcd_ctrl_init (lcdbase);
427 lcd_clear (NULL, 1, 1, NULL); /* dummy args */
430 /* Initialize the console */
432 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
433 console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
435 console_row = 1; /* leave 1 blank line below logo */
443 /************************************************************************/
444 /* ** ROM capable initialization part - needed to reserve FB memory */
445 /************************************************************************/
447 * This is called early in the system initialization to grab memory
448 * for the LCD controller.
449 * Returns new address for monitor, after reserving LCD buffer memory
451 * Note that this is running from ROM, so no write access to global data.
453 ulong lcd_setmem (ulong addr)
456 int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
458 debug ("LCD panel info: %d x %d, %d bit/pix\n",
459 panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
461 size = line_length * panel_info.vl_row;
463 /* Round up to nearest full page */
464 size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
466 /* Allocate pages for the frame buffer. */
469 debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
474 /*----------------------------------------------------------------------*/
476 static void lcd_setfgcolor (int color)
478 lcd_color_fg = color & 0x0F;
481 /*----------------------------------------------------------------------*/
483 static void lcd_setbgcolor (int color)
485 lcd_color_bg = color & 0x0F;
488 /*----------------------------------------------------------------------*/
490 #ifdef NOT_USED_SO_FAR
491 static int lcd_getfgcolor (void)
495 #endif /* NOT_USED_SO_FAR */
497 /*----------------------------------------------------------------------*/
499 static int lcd_getbgcolor (void)
504 /*----------------------------------------------------------------------*/
506 /************************************************************************/
507 /* ** Chipset depending Bitmap / Logo stuff... */
508 /************************************************************************/
509 #ifdef CONFIG_LCD_LOGO
510 void bitmap_plot (int x, int y)
517 #if defined(CONFIG_PXA250)
518 struct pxafb_info *fbi = &panel_info.pxa;
519 #elif defined(CONFIG_MPC823)
520 volatile immap_t *immr = (immap_t *) CFG_IMMR;
521 volatile cpm8xx_t *cp = &(immr->im_cpm);
524 debug ("Logo: width %d height %d colors %d cmap %d\n",
525 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
526 sizeof(bmp_logo_palette)/(sizeof(ushort)));
528 bmap = &bmp_logo_bitmap[0];
529 fb = (uchar *)(lcd_base + y * lcd_line_length + x);
531 if (NBITS(panel_info.vl_bpix) < 12) {
532 /* Leave room for default color map */
533 #if defined(CONFIG_PXA250)
534 cmap = (ushort *)fbi->palette;
535 #elif defined(CONFIG_MPC823)
536 cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
542 for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
543 ushort colreg = bmp_logo_palette[i];
544 #ifdef CFG_INVERT_COLORS
545 *cmap++ = 0xffff - colreg;
553 for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
554 memcpy (fb, bmap, BMP_LOGO_WIDTH);
555 bmap += BMP_LOGO_WIDTH;
556 fb += panel_info.vl_col;
559 else { /* true color mode */
560 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
561 for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
562 for (j=0; j<BMP_LOGO_WIDTH; j++) {
563 fb16[j] = bmp_logo_palette[(bmap[j])];
565 bmap += BMP_LOGO_WIDTH;
566 fb16 += panel_info.vl_col;
572 #endif /* CONFIG_LCD_LOGO */
574 /*----------------------------------------------------------------------*/
575 #if (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
577 * Display the BMP file located at address bmp_image.
580 int lcd_display_bitmap(ulong bmp_image, int x, int y)
585 bmp_image_t *bmp=(bmp_image_t *)bmp_image;
588 unsigned long width, height;
589 unsigned colors,bpix;
590 unsigned long compression;
591 #if defined(CONFIG_PXA250)
592 struct pxafb_info *fbi = &panel_info.pxa;
593 #elif defined(CONFIG_MPC823)
594 volatile immap_t *immr = (immap_t *) CFG_IMMR;
595 volatile cpm8xx_t *cp = &(immr->im_cpm);
598 if (!((bmp->header.signature[0]=='B') &&
599 (bmp->header.signature[1]=='M'))) {
600 printf ("Error: no valid bmp image at %lx\n", bmp_image);
604 width = le32_to_cpu (bmp->header.width);
605 height = le32_to_cpu (bmp->header.height);
606 colors = 1<<le16_to_cpu (bmp->header.bit_count);
607 compression = le32_to_cpu (bmp->header.compression);
609 bpix = NBITS(panel_info.vl_bpix);
611 if ((bpix != 1) && (bpix != 8)) {
612 printf ("Error: %d bit/pixel mode not supported by U-Boot\n",
617 if (bpix != le16_to_cpu(bmp->header.bit_count)) {
618 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
620 le16_to_cpu(bmp->header.bit_count));
624 debug ("Display-bmp: %d x %d with %d colors\n",
625 (int)width, (int)height, (int)colors);
628 #if defined(CONFIG_PXA250)
629 cmap = (ushort *)fbi->palette;
630 #elif defined(CONFIG_MPC823)
631 cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
633 # error "Don't know location of color map"
637 for (i=0; i<colors; ++i) {
638 bmp_color_table_entry_t cte = bmp->color_table[i];
640 ( ((cte.red) << 8) & 0xf800) |
641 ( ((cte.green) << 3) & 0x07e0) |
642 ( ((cte.blue) >> 3) & 0x001f) ;
643 #ifdef CFG_INVERT_COLORS
644 *cmap = 0xffff - colreg;
648 #if defined(CONFIG_PXA250)
650 #elif defined(CONFIG_MPC823)
656 padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
657 if ((x + width)>panel_info.vl_col)
658 width = panel_info.vl_col - x;
659 if ((y + height)>panel_info.vl_row)
660 height = panel_info.vl_row - y;
662 bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
663 fb = (uchar *) (lcd_base +
664 (y + height - 1) * lcd_line_length + x);
665 for (i = 0; i < height; ++i) {
667 for (j = 0; j < width ; j++)
668 #if defined(CONFIG_PXA250)
670 #elif defined(CONFIG_MPC823)
671 *(fb++)=255-*(bmap++);
673 bmap += (width - padded_line);
674 fb -= (width + lcd_line_length);
679 #endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) || CONFIG_SPLASH_SCREEN */
682 static void *lcd_logo (void)
684 #ifdef CONFIG_LCD_INFO
685 DECLARE_GLOBAL_DATA_PTR;
689 #endif /* CONFIG_LCD_INFO */
691 #ifdef CONFIG_SPLASH_SCREEN
694 static int do_splash = 1;
696 if (do_splash && (s = getenv("splashimage")) != NULL) {
697 addr = simple_strtoul(s, NULL, 16);
700 if (lcd_display_bitmap (addr, 0, 0) == 0) {
701 return ((void *)lcd_base);
704 #endif /* CONFIG_SPLASH_SCREEN */
706 #ifdef CONFIG_LCD_LOGO
708 #endif /* CONFIG_LCD_LOGO */
711 # ifdef CONFIG_LCD_INFO
712 sprintf (info, "%s (%s - %s) ", U_BOOT_VERSION, __DATE__, __TIME__);
713 lcd_drawchars (LCD_INFO_X, LCD_INFO_Y, (uchar *)info, strlen(info));
715 sprintf (info, "(C) 2004 DENX Software Engineering");
716 lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT,
717 (uchar *)info, strlen(info));
719 sprintf (info, " Wolfgang DENK, wd@denx.de");
720 lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 2,
721 (uchar *)info, strlen(info));
722 # ifdef CONFIG_LCD_INFO_BELOW_LOGO
723 sprintf (info, "MPC823 CPU at %s MHz",
724 strmhz(temp, gd->cpu_clk));
725 lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 3,
727 sprintf (info, " %ld MB RAM, %ld MB Flash",
729 gd->bd->bi_flashsize >> 20 );
730 lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
733 /* leave one blank line */
735 sprintf (info, "MPC823 CPU at %s MHz, %ld MB RAM, %ld MB Flash",
736 strmhz(temp, gd->cpu_clk),
738 gd->bd->bi_flashsize >> 20 );
739 lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
740 (uchar *)info, strlen(info));
742 # endif /* CONFIG_LCD_INFO_BELOW_LOGO */
743 # endif /* CONFIG_LCD_INFO */
744 #endif /* CONFIG_MPC823 */
746 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
747 return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
749 return ((void *)lcd_base);
750 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
753 /************************************************************************/
754 /************************************************************************/
756 #endif /* CONFIG_LCD */