lcd.c

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	lcd_setcolreg  (CONSOLE_COLOR_WHITE,	0xFF, 0xFF, 0xFF);
#endif

#ifndef CFG_WHITE_ON_BLACK
	lcd_setfgcolor (CONSOLE_COLOR_BLACK);
	lcd_setbgcolor (CONSOLE_COLOR_WHITE);
#else
	lcd_setfgcolor (CONSOLE_COLOR_WHITE);
	lcd_setbgcolor (CONSOLE_COLOR_BLACK);
#endif	/* CFG_WHITE_ON_BLACK */

#ifdef	LCD_TEST_PATTERN
	test_pattern();
#else
	/* set framebuffer to background color */
	memset ((char *)lcd_base,
		COLOR_MASK(lcd_getbgcolor()),
		lcd_line_length*panel_info.vl_row);
#endif
	/* Paint the logo and retrieve LCD base address */
	debug ("[LCD] Drawing the logo...\n");
	lcd_console_address = lcd_logo ();

	console_col = 0;
	console_row = 0;

	return (0);
}

U_BOOT_CMD(
	cls,	1,	1,	lcd_clear,
	"cls     - clear screen\n",
	NULL
);

/*----------------------------------------------------------------------*/

static int lcd_init (void *lcdbase)
{
	/* Initialize the lcd controller */
	debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);

	lcd_ctrl_init (lcdbase);
	lcd_clear (NULL, 1, 1, NULL);	/* dummy args */
	lcd_enable ();

	/* Initialize the console */
	console_col = 0;
#ifdef LCD_INFO_BELOW_LOGO
	console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
#else
	console_row = 1;	/* leave 1 blank line below logo */
#endif
	lcd_is_enabled = 1;

	return 0;
}


/************************************************************************/
/* ** ROM capable initialization part - needed to reserve FB memory	*/
/************************************************************************/
/*
 * This is called early in the system initialization to grab memory
 * for the LCD controller.
 * Returns new address for monitor, after reserving LCD buffer memory
 *
 * Note that this is running from ROM, so no write access to global data.
 */
ulong lcd_setmem (ulong addr)
{
	ulong size;
	int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;

	debug ("LCD panel info: %d x %d, %d bit/pix\n",
		panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );

	size = line_length * panel_info.vl_row;

	/* Round up to nearest full page */
	size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);

	/* Allocate pages for the frame buffer. */
	addr -= size;

	debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);

	return (addr);
}

/*----------------------------------------------------------------------*/

static void lcd_setfgcolor (int color)
{
	lcd_color_fg = color & 0x0F;
}

/*----------------------------------------------------------------------*/

static void lcd_setbgcolor (int color)
{
	lcd_color_bg = color & 0x0F;
}

/*----------------------------------------------------------------------*/

#ifdef	NOT_USED_SO_FAR
static int lcd_getfgcolor (void)
{
	return lcd_color_fg;
}
#endif	/* NOT_USED_SO_FAR */

/*----------------------------------------------------------------------*/

static int lcd_getbgcolor (void)
{
	return lcd_color_bg;
}

/*----------------------------------------------------------------------*/

/************************************************************************/
/* ** Chipset depending Bitmap / Logo stuff...                          */
/************************************************************************/
#ifdef CONFIG_LCD_LOGO
void bitmap_plot (int x, int y)
{
	ushort *cmap;
	ushort i, j;
	uchar *bmap;
	uchar *fb;
	ushort *fb16;
#if defined(CONFIG_PXA250)
	struct pxafb_info *fbi = &panel_info.pxa;
#elif defined(CONFIG_MPC823)
	volatile immap_t *immr = (immap_t *) CFG_IMMR;
	volatile cpm8xx_t *cp = &(immr->im_cpm);
#endif

	debug ("Logo: width %d  height %d  colors %d  cmap %d\n",
		BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
		sizeof(bmp_logo_palette)/(sizeof(ushort)));

	bmap = &bmp_logo_bitmap[0];
	fb   = (char *)(lcd_base + y * lcd_line_length + x);

	if (NBITS(panel_info.vl_bpix) < 12) {
		/* Leave room for default color map */
#if defined(CONFIG_PXA250)
		cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
		cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
#endif

		WATCHDOG_RESET();

		/* Set color map */
		for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
			ushort colreg = bmp_logo_palette[i];
#ifdef  CFG_INVERT_COLORS
			*cmap++ = 0xffff - colreg;
#else
			*cmap++ = colreg;
#endif
		}

		WATCHDOG_RESET();

		for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
			memcpy (fb, bmap, BMP_LOGO_WIDTH);
			bmap += BMP_LOGO_WIDTH;
			fb   += panel_info.vl_col;
		}
	}
	else { /* true color mode */
		fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
		for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
			for (j=0; j<BMP_LOGO_WIDTH; j++) {
				fb16[j] = bmp_logo_palette[(bmap[j])];
				}
			bmap += BMP_LOGO_WIDTH;
			fb16 += panel_info.vl_col;
		}
	}

	WATCHDOG_RESET();
}
#endif /* CONFIG_LCD_LOGO */

/*----------------------------------------------------------------------*/
#if (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
/*
 * Display the BMP file located at address bmp_image.
 * Only uncompressed.
 */
int lcd_display_bitmap(ulong bmp_image, int x, int y)
{
	ushort *cmap;
	ushort i, j;
	uchar *fb;
	bmp_image_t *bmp=(bmp_image_t *)bmp_image;
	uchar *bmap;
	ushort padded_line;
	unsigned long width, height;
	unsigned colors,bpix;
	unsigned long compression;
#if defined(CONFIG_PXA250)
	struct pxafb_info *fbi = &panel_info.pxa;
#elif defined(CONFIG_MPC823)
	volatile immap_t *immr = (immap_t *) CFG_IMMR;
	volatile cpm8xx_t *cp = &(immr->im_cpm);
#endif

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

	width = le32_to_cpu (bmp->header.width);
	height = le32_to_cpu (bmp->header.height);
	colors = 1<<le16_to_cpu (bmp->header.bit_count);
	compression = le32_to_cpu (bmp->header.compression);

	bpix = NBITS(panel_info.vl_bpix);

	if ((bpix != 1) && (bpix != 8)) {
		printf ("Error: %d bit/pixel mode not supported by U-Boot\n",
			bpix);
		return 1;
	}

	if (bpix != le16_to_cpu(bmp->header.bit_count)) {
		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
			bpix,
			le16_to_cpu(bmp->header.bit_count));
		return 1;
	}

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

	if (bpix==8) {
#if defined(CONFIG_PXA250)
		cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
		cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
#else
# error "Don't know location of color map"
#endif

		/* Set color map */
		for (i=0; i<colors; ++i) {
			bmp_color_table_entry_t cte = bmp->color_table[i];
			ushort colreg =
				( ((cte.red)   << 8) & 0xf800) |
				( ((cte.green) << 4) & 0x07e0) |
				( (cte.blue) & 0x001f) ;

#ifdef CFG_INVERT_COLORS
			*cmap = 0xffff - colreg;
#else
			*cmap = colreg;
#endif
#if defined(CONFIG_PXA250)
			cmap++;
#elif defined(CONFIG_MPC823)
			cmap--;
#endif
		}
	}

	padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
	if ((x + width)>panel_info.vl_col)
		width = panel_info.vl_col - x;
	if ((y + height)>panel_info.vl_row)
		height = panel_info.vl_row - y;

	bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
	fb   = (uchar *) (lcd_base +
		(y + height - 1) * lcd_line_length + x);
	for (i = 0; i < height; ++i) {
		for (j = 0; j < width ; j++)
#if defined(CONFIG_PXA250)
			*(fb++)=*(bmap++);
#elif defined(CONFIG_MPC823)
			*(fb++)=255-*(bmap++);
#endif
		bmap += (width - padded_line);
		fb   -= (width + lcd_line_length);
	}

	return (0);
}
#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) || CONFIG_SPLASH_SCREEN */


static void *lcd_logo (void)
{
#ifdef LCD_INFO
	DECLARE_GLOBAL_DATA_PTR;

	char info[80];
	char temp[32];
#endif /* LCD_INFO */

#ifdef CONFIG_SPLASH_SCREEN
	char *s;
	ulong addr;
	static int do_splash = 1;

	if (do_splash && (s = getenv("splashimage")) != NULL) {
		addr = simple_strtoul(s, NULL, 16);
		do_splash = 0;

		if (lcd_display_bitmap (addr, 0, 0) == 0) {
			return ((void *)lcd_base);
		}
	}
#endif /* CONFIG_SPLASH_SCREEN */

#ifdef CONFIG_LCD_LOGO
	bitmap_plot (0, 0);
#endif /* CONFIG_LCD_LOGO */

#ifdef CONFIG_MPC823
#ifdef LCD_INFO
	sprintf (info, "%s (%s - %s) ", U_BOOT_VERSION, __DATE__, __TIME__);
	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y, info, strlen(info));

	sprintf (info, "(C) 2004 DENX Software Engineering");
	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT,
					info, strlen(info));

	sprintf (info, "    Wolfgang DENK, [e-mail]");
	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 2,
					info, strlen(info));
#ifdef LCD_INFO_BELOW_LOGO
	sprintf (info, "MPC823 CPU at %s MHz",
		strmhz(temp, gd->cpu_clk));
	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 3,
					info, strlen(info));
	sprintf (info, "  %ld MB RAM, %ld MB Flash",
		gd->ram_size >> 20,
		gd->bd->bi_flashsize >> 20 );
	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
					info, strlen(info));
#else
	/* leave one blank line */

	sprintf (info, "MPC823 CPU at %s MHz, %ld MB RAM, %ld MB Flash",
		strmhz(temp, gd->cpu_clk),
		gd->ram_size >> 20,
		gd->bd->bi_flashsize >> 20 );
	lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
					info, strlen(info));

#endif /* CONFIG_MPC823 */
#endif /* LCD_INFO_BELOW_LOGO */
#endif /* LCD_INFO */

#if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
	return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
#else
	return ((void *)lcd_base);
#endif /* CONFIG_LCD_LOGO */
}

/************************************************************************/
/************************************************************************/

#endif /* CONFIG_LCD */