text: /*
   * Common LCD routines for supported CPUs
   *
   * (C) Copyright 2001-2002
   * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   *
   * See file CREDITS for list of people who contributed to this
   * project.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
   * published by the Free Software Foundation; either version 2 of
   * the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
   * MA 02111-1307 USA
   */
  
  /************************************************************************/
  /* ** HEADER FILES							*/
  /************************************************************************/
  
  /* #define DEBUG */
  
  #include <config.h>
  #include <common.h>
  #include <command.h>
  #include <stdarg.h>
  #include <linux/types.h>
  #include <stdio_dev.h>
  #if defined(CONFIG_POST)
  #include <post.h>
  #endif
  #include <lcd.h>
  #include <watchdog.h>
  
  #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
  	defined(CONFIG_CPU_MONAHANS)
  #define CONFIG_CPU_PXA
  #include <asm/byteorder.h>
  #endif
  
  #if defined(CONFIG_MPC823)
  #include <lcdvideo.h>
  #endif
  
  #if defined(CONFIG_ATMEL_LCD)
  #include <atmel_lcdc.h>
  #endif
  
  /************************************************************************/
  /* ** FONT DATA								*/
  /************************************************************************/
  #include <video_font.h>		/* Get font data, width and height	*/
  #include <video_font_data.h>
  
  /************************************************************************/
  /* ** LOGO DATA								*/
  /************************************************************************/
  #ifdef CONFIG_LCD_LOGO
  # include <bmp_logo.h>		/* Get logo data, width and height	*/
  # include <bmp_logo_data.h>
  # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
  #  error Default Color Map overlaps with Logo Color Map
  # endif
  #endif
  
  #ifndef CONFIG_LCD_ALIGNMENT
  #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
  #endif
  
  /* By default we scroll by a single line */
  #ifndef CONFIG_CONSOLE_SCROLL_LINES
  #define CONFIG_CONSOLE_SCROLL_LINES 1
  #endif
  
  DECLARE_GLOBAL_DATA_PTR;
  
  ulong lcd_setmem (ulong addr);
  
  static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
  static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
  static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
  
  static int lcd_init(void *lcdbase);
  
  static void *lcd_logo (void);
  
  static int lcd_getbgcolor(void);
  static void lcd_setfgcolor(int color);
  static void lcd_setbgcolor(int color);
  
  char lcd_is_enabled = 0;
  
  static char lcd_flush_dcache;	/* 1 to flush dcache after each lcd update */
  
  
  #ifdef	NOT_USED_SO_FAR
  static void lcd_getcolreg(ushort regno,
  				ushort *red, ushort *green, ushort *blue);
  static int lcd_getfgcolor(void);
  #endif	/* NOT_USED_SO_FAR */
  
  /************************************************************************/
  
  /* Flush LCD activity to the caches */
  void lcd_sync(void)
  {
  	/*
  	 * flush_dcache_range() is declared in common.h but it seems that some
  	 * architectures do not actually implement it. Is there a way to find
  	 * out whether it exists? For now, ARM is safe.
  	 */
  #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
  	int line_length;
  
  	if (lcd_flush_dcache)
  		flush_dcache_range((u32)lcd_base,
  			(u32)(lcd_base + lcd_get_size(&line_length)));
  #endif
  }
  
  void lcd_set_flush_dcache(int flush)
  {
  	lcd_flush_dcache = (flush != 0);
  }
  
  /*----------------------------------------------------------------------*/
  
  static void console_scrollup(void)
  {
  	const int rows = CONFIG_CONSOLE_SCROLL_LINES;
  
  	/* Copy up rows ignoring those that will be overwritten */
  	memcpy(CONSOLE_ROW_FIRST,
  	       lcd_console_address + CONSOLE_ROW_SIZE * rows,
  	       CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
  
  	/* Clear the last rows */
  	memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
  		COLOR_MASK(lcd_color_bg),
  	       CONSOLE_ROW_SIZE * rows);
  
  	lcd_sync();
  	console_row -= rows;
  }
  
  /*----------------------------------------------------------------------*/
  
  static inline void console_back(void)
  {
  	if (--console_col < 0) {
  		console_col = CONSOLE_COLS-1 ;
  		if (--console_row < 0) {
  			console_row = 0;
  		}
  	}
  
  	lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
  		console_row * VIDEO_FONT_HEIGHT, ' ');
  }
  
  /*----------------------------------------------------------------------*/
  
  static inline void console_newline(void)
  {
  	++console_row;
  	console_col = 0;
  
  	/* Check if we need to scroll the terminal */
  	if (console_row >= CONSOLE_ROWS) {
  		/* Scroll everything up */
  		console_scrollup();
  	} else {
  		lcd_sync();
  	}
  }
  
  /*----------------------------------------------------------------------*/
  
  void lcd_putc(const char c)
  {
  	if (!lcd_is_enabled) {
  		serial_putc(c);
  
  		return;
  	}
  
  	switch (c) {
  	case '\r':
  		console_col = 0;
  
  		return;
  	case '\n':
  		console_newline();
  
  		return;
  	case '\t':	/* Tab (8 chars alignment) */
  		console_col +=  8;
  		console_col &= ~7;
  
  		if (console_col >= CONSOLE_COLS)
  			console_newline();
  
  		return;
  	case '\b':
  		console_back();
  
  		return;
  	default:
  		lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
  			console_row * VIDEO_FONT_HEIGHT, c);
  		if (++console_col >= CONSOLE_COLS)
  			console_newline();
  	}
  }
  
  /*----------------------------------------------------------------------*/
  
  void lcd_puts(const char *s)
  {
  	if (!lcd_is_enabled) {
  		serial_puts(s);
  
  		return;
  	}
  
  	while (*s) {
  		lcd_putc(*s++);
  	}
  	lcd_sync();
  }
  
  /*----------------------------------------------------------------------*/
  
  void lcd_printf(const char *fmt, ...)
  {
  	va_list args;
  	char buf[CONFIG_SYS_PBSIZE];
  
  	va_start(args, fmt);
  	vsprintf(buf, fmt, args);
  	va_end(args);
  
  	lcd_puts(buf);
  }
  
  /************************************************************************/
  /* ** Low-Level Graphics Routines					*/
  /************************************************************************/
  
  static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
  {
  	uchar *dest;
  	ushort row;
  
  #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  	y += BMP_LOGO_HEIGHT;
  #endif
  
  #if LCD_BPP == LCD_MONOCHROME
  	ushort off  = x * (1 << LCD_BPP) % 8;
  #endif
  
  	dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
  
  	for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
  		uchar *s = str;
  		int i;
  #if LCD_BPP == LCD_COLOR16
  		ushort *d = (ushort *)dest;
  #else
  		uchar *d = dest;
  #endif
  
  #if LCD_BPP == LCD_MONOCHROME
  		uchar rest = *d & -(1 << (8-off));
  		uchar sym;
  #endif
  		for (i = 0; i < count; ++i) {
  			uchar c, bits;
  
  			c = *s++;
  			bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
  
  #if LCD_BPP == LCD_MONOCHROME
  			sym  = (COLOR_MASK(lcd_color_fg) & bits) |
  				(COLOR_MASK(lcd_color_bg) & ~bits);
  
  			*d++ = rest | (sym >> off);
  			rest = sym << (8-off);
  #elif LCD_BPP == LCD_COLOR8
  			for (c = 0; c < 8; ++c) {
  				*d++ = (bits & 0x80) ?
  						lcd_color_fg : lcd_color_bg;
  				bits <<= 1;
  			}
  #elif LCD_BPP == LCD_COLOR16
  			for (c = 0; c < 8; ++c) {
  				*d++ = (bits & 0x80) ?
  						lcd_color_fg : lcd_color_bg;
  				bits <<= 1;
  			}
  #endif
  		}
  #if LCD_BPP == LCD_MONOCHROME
  		*d  = rest | (*d & ((1 << (8-off)) - 1));
  #endif
  	}
  }
  
  /*----------------------------------------------------------------------*/
  
  static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
  {
  	lcd_drawchars(x, y, s, strlen((char *)s));
  }
  
  /*----------------------------------------------------------------------*/
  
  static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
  {
  	lcd_drawchars(x, y, &c, 1);
  }
  
  /************************************************************************/
  /**  Small utility to check that you got the colours right		*/
  /************************************************************************/
  #ifdef LCD_TEST_PATTERN
  
  #define	N_BLK_VERT	2
  #define	N_BLK_HOR	3
  
  static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
  	CONSOLE_COLOR_RED,	CONSOLE_COLOR_GREEN,	CONSOLE_COLOR_YELLOW,
  	CONSOLE_COLOR_BLUE,	CONSOLE_COLOR_MAGENTA,	CONSOLE_COLOR_CYAN,
  };
  
  static void test_pattern(void)
  {
  	ushort v_max  = panel_info.vl_row;
  	ushort h_max  = panel_info.vl_col;
  	ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
  	ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
  	ushort v, h;
  	uchar *pix = (uchar *)lcd_base;
  
  	printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
  		h_max, v_max, h_step, v_step);
  
  	/* WARNING: Code silently assumes 8bit/pixel */
  	for (v = 0; v < v_max; ++v) {
  		uchar iy = v / v_step;
  		for (h = 0; h < h_max; ++h) {
  			uchar ix = N_BLK_HOR * iy + (h/h_step);
  			*pix++ = test_colors[ix];
  		}
  	}
  }
  #endif /* LCD_TEST_PATTERN */
  
  
  /************************************************************************/
  /* ** GENERIC Initialization Routines					*/
  /************************************************************************/
  
  int lcd_get_size(int *line_length)
  {
  	*line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
  	return *line_length * panel_info.vl_row;
  }
  
  int drv_lcd_init (void)
  {
  	struct stdio_dev lcddev;
  	int rc;
  
  	lcd_base = (void *)(gd->fb_base);
  
  	lcd_get_size(&lcd_line_length);
  
  	lcd_init(lcd_base);		/* LCD initialization */
  
  	/* Device initialization */
  	memset(&lcddev, 0, sizeof(lcddev));
  
  	strcpy(lcddev.name, "lcd");
  	lcddev.ext   = 0;			/* No extensions */
  	lcddev.flags = DEV_FLAGS_OUTPUT;	/* Output only */
  	lcddev.putc  = lcd_putc;		/* 'putc' function */
  	lcddev.puts  = lcd_puts;		/* 'puts' function */
  
  	rc = stdio_register (&lcddev);
  
  	return (rc == 0) ? 1 : rc;
  }
  
  /*----------------------------------------------------------------------*/
  void lcd_clear(void)
  {
  #if LCD_BPP == LCD_MONOCHROME
  	/* Setting the palette */
  	lcd_initcolregs();
  
  #elif LCD_BPP == LCD_COLOR8
  	/* Setting the palette */
  	lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
  	lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
  	lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
  	lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
  	lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
  	lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
  	lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
  	lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
  	lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
  #endif
  
  #ifndef CONFIG_SYS_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	/* CONFIG_SYS_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;
  	lcd_sync();
  }
  
  static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
  			char *const argv[])
  {
  	lcd_clear();
  	return 0;
  }
  
  U_BOOT_CMD(
  	cls,	1,	1,	do_lcd_clear,
  	"clear screen",
  	""
  );
  
  /*----------------------------------------------------------------------*/
  
  static int lcd_init(void *lcdbase)
  {
  	/* Initialize the lcd controller */
  	debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
  
  	lcd_ctrl_init(lcdbase);
  	lcd_is_enabled = 1;
  	lcd_clear();
  	lcd_enable ();
  
  	/* Initialize the console */
  	console_col = 0;
  #ifdef CONFIG_LCD_INFO_BELOW_LOGO
  	console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
  #else
  	console_row = 1;	/* leave 1 blank line below logo */
  #endif
  
  	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;
  
  	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 = lcd_get_size(&line_length);
  
  	/* Round up to nearest full page, or MMU section if defined */
  	size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
  	addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
  
  	/* 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;
  }
  
  /*----------------------------------------------------------------------*/
  
  static void lcd_setbgcolor(int color)
  {
  	lcd_color_bg = color;
  }
  
  /*----------------------------------------------------------------------*/
  
  #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...                          */
  /************************************************************************/
  static inline ushort *configuration_get_cmap(void)
  {
  #if defined CONFIG_CPU_PXA
  	struct pxafb_info *fbi = &panel_info.pxa;
  	return (ushort *)fbi->palette;
  #elif defined(CONFIG_MPC823)
  	immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
  	cpm8xx_t *cp = &(immr->im_cpm);
  	return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
  #elif defined(CONFIG_ATMEL_LCD)
  	return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
  #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
  	return panel_info.cmap;
  #else
  #if defined(CONFIG_LCD_LOGO)
  	return bmp_logo_palette;
  #else
  	return NULL;
  #endif
  #endif
  }
  
  #ifdef CONFIG_LCD_LOGO
  void bitmap_plot(int x, int y)
  {
  #ifdef CONFIG_ATMEL_LCD
  	uint *cmap = (uint *)bmp_logo_palette;
  #else
  	ushort *cmap = (ushort *)bmp_logo_palette;
  #endif
  	ushort i, j;
  	uchar *bmap;
  	uchar *fb;
  	ushort *fb16;
  #if defined(CONFIG_MPC823)
  	immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
  	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,
  		ARRAY_SIZE(bmp_logo_palette));
  
  	bmap = &bmp_logo_bitmap[0];
  	fb   = (uchar *)(lcd_base + y * lcd_line_length + x);
  
  	if (NBITS(panel_info.vl_bpix) < 12) {
  		/* Leave room for default color map
  		 * default case: generic system with no cmap (most likely 16bpp)
  		 * cmap was set to the source palette, so no change is done.
  		 * This avoids even more ifdefs in the next stanza
  		 */
  #if defined(CONFIG_MPC823)
  		cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
  #elif defined(CONFIG_ATMEL_LCD)
  		cmap = (uint *)configuration_get_cmap();
  #else
  		cmap = configuration_get_cmap();
  #endif
  
  		WATCHDOG_RESET();
  
  		/* Set color map */
  		for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
  			ushort colreg = bmp_logo_palette[i];
  #ifdef CONFIG_ATMEL_LCD
  			uint lut_entry;
  #ifdef CONFIG_ATMEL_LCD_BGR555
  			lut_entry = ((colreg & 0x000F) << 11) |
  					((colreg & 0x00F0) <<  2) |
  					((colreg & 0x0F00) >>  7);
  #else /* CONFIG_ATMEL_LCD_RGB565 */
  			lut_entry = ((colreg & 0x000F) << 1) |
  					((colreg & 0x00F0) << 3) |
  					((colreg & 0x0F00) << 4);
  #endif
  			*(cmap + BMP_LOGO_OFFSET) = lut_entry;
  			cmap++;
  #else /* !CONFIG_ATMEL_LCD */
  #ifdef  CONFIG_SYS_INVERT_COLORS
  			*cmap++ = 0xffff - colreg;
  #else
  			*cmap++ = colreg;
  #endif
  #endif /* CONFIG_ATMEL_LCD */
  		}
  
  		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 */
  		u16 col16;
  		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++) {
  				col16 = bmp_logo_palette[(bmap[j]-16)];
  				fb16[j] =
  					((col16 & 0x000F) << 1) |
  					((col16 & 0x00F0) << 3) |
  					((col16 & 0x0F00) << 4);
  				}
  			bmap += BMP_LOGO_WIDTH;
  			fb16 += panel_info.vl_col;
  		}
  	}
  
  	WATCHDOG_RESET();
  	lcd_sync();
  }
  #else
  static inline void bitmap_plot(int x, int y) {}
  #endif /* CONFIG_LCD_LOGO */
  
  /*----------------------------------------------------------------------*/
  #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
  /*
   * Display the BMP file located at address bmp_image.
   * Only uncompressed.
   */
  
  #ifdef CONFIG_SPLASH_SCREEN_ALIGN
  #define BMP_ALIGN_CENTER	0x7FFF
  
  static void splash_align_axis(int *axis, unsigned long panel_size,
  					unsigned long picture_size)
  {
  	unsigned long panel_picture_delta = panel_size - picture_size;
  	unsigned long axis_alignment;
  
  	if (*axis == BMP_ALIGN_CENTER)
  		axis_alignment = panel_picture_delta / 2;
  	else if (*axis < 0)
  		axis_alignment = panel_picture_delta + *axis + 1;
  	else
  		return;
  
  	*axis = max(0, axis_alignment);
  }
  #endif
  
  
  #ifdef CONFIG_LCD_BMP_RLE8
  
  #define BMP_RLE8_ESCAPE		0
  #define BMP_RLE8_EOL		0
  #define BMP_RLE8_EOBMP		1
  #define BMP_RLE8_DELTA		2
  
  static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
  				  int cnt)
  {
  	while (cnt > 0) {
  		*(*fbp)++ = cmap[*bmap++];
  		cnt--;
  	}
  }
  
  static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
  {
  	ushort *fb = *fbp;
  	int cnt_8copy = cnt >> 3;
  
  	cnt -= cnt_8copy << 3;
  	while (cnt_8copy > 0) {
  		*fb++ = c;
  		*fb++ = c;
  		*fb++ = c;
  		*fb++ = c;
  		*fb++ = c;
  		*fb++ = c;
  		*fb++ = c;
  		*fb++ = c;
  		cnt_8copy--;
  	}
  	while (cnt > 0) {
  		*fb++ = c;
  		cnt--;
  	}
  	(*fbp) = fb;
  }
  
  /*
   * Do not call this function directly, must be called from
   * lcd_display_bitmap.
   */
  static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
  				    int x_off, int y_off)
  {
  	uchar *bmap;
  	ulong width, height;
  	ulong cnt, runlen;
  	int x, y;
  	int decode = 1;
  
  	width = le32_to_cpu(bmp->header.width);
  	height = le32_to_cpu(bmp->header.height);
  	bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
  
  	x = 0;
  	y = height - 1;
  
  	while (decode) {
  		if (bmap[0] == BMP_RLE8_ESCAPE) {
  			switch (bmap[1]) {
  			case BMP_RLE8_EOL:
  				/* end of line */
  				bmap += 2;
  				x = 0;
  				y--;
  				/* 16bpix, 2-byte per pixel, width should *2 */
  				fb -= (width * 2 + lcd_line_length);
  				break;
  			case BMP_RLE8_EOBMP:
  				/* end of bitmap */
  				decode = 0;
  				break;
  			case BMP_RLE8_DELTA:
  				/* delta run */
  				x += bmap[2];
  				y -= bmap[3];
  				/* 16bpix, 2-byte per pixel, x should *2 */
  				fb = (uchar *) (lcd_base + (y + y_off - 1)
  					* lcd_line_length + (x + x_off) * 2);
  				bmap += 4;
  				break;
  			default:
  				/* unencoded run */
  				runlen = bmap[1];
  				bmap += 2;
  				if (y < height) {
  					if (x < width) {
  						if (x + runlen > width)
  							cnt = width - x;
  						else
  							cnt = runlen;
  						draw_unencoded_bitmap(
  							(ushort **)&fb,
  							bmap, cmap, cnt);
  					}
  					x += runlen;
  				}
  				bmap += runlen;
  				if (runlen & 1)
  					bmap++;
  			}
  		} else {
  			/* encoded run */
  			if (y < height) {
  				runlen = bmap[0];
  				if (x < width) {
  					/* aggregate the same code */
  					while (bmap[0] == 0xff &&
  					       bmap[2] != BMP_RLE8_ESCAPE &&
  					       bmap[1] == bmap[3]) {
  						runlen += bmap[2];
  						bmap += 2;
  					}
  					if (x + runlen > width)
  						cnt = width - x;
  					else
  						cnt = runlen;
  					draw_encoded_bitmap((ushort **)&fb,
  						cmap[bmap[1]], cnt);
  				}
  				x += runlen;
  			}
  			bmap += 2;
  		}
  	}
  }
  #endif
  
  #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
  #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
  #else
  #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
  #endif
  
  #if defined(CONFIG_BMP_16BPP)
  #if defined(CONFIG_ATMEL_LCD_BGR555)
  static inline void fb_put_word(uchar **fb, uchar **from)
  {
  	*(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
  	*(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
  	*from += 2;
  }
  #else
  static inline void fb_put_word(uchar **fb, uchar **from)
  {
  	*(*fb)++ = *(*from)++;
  	*(*fb)++ = *(*from)++;
  }
  #endif
  #endif /* CONFIG_BMP_16BPP */
  
  int lcd_display_bitmap(ulong bmp_image, int x, int y)
  {
  #if !defined(CONFIG_MCC200)
  	ushort *cmap = NULL;
  #endif
  	ushort *cmap_base = NULL;
  	ushort i, j;
  	uchar *fb;
  	bmp_image_t *bmp=(bmp_image_t *)bmp_image;
  	uchar *bmap;
  	ushort padded_width;
  	unsigned long width, height, byte_width;
  	unsigned long pwidth = panel_info.vl_col;
  	unsigned colors, bpix, bmp_bpix;
  
  	if (!bmp || !((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);
  	bmp_bpix = le16_to_cpu(bmp->header.bit_count);
  	colors = 1 << bmp_bpix;
  
  	bpix = NBITS(panel_info.vl_bpix);
  
  	if ((bpix != 1) && (bpix != 8) && (bpix != 16) && (bpix != 32)) {
  		printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
  			bpix, bmp_bpix);
  
  		return 1;
  	}
  
  	/* We support displaying 8bpp BMPs on 16bpp LCDs */
  	if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
  		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 !defined(CONFIG_MCC200)
  	/* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
  	if (bmp_bpix == 8) {
  		cmap = configuration_get_cmap();
  		cmap_base = cmap;
  
  		/* Set color map */
  		for (i = 0; i < colors; ++i) {
  			bmp_color_table_entry_t cte = bmp->color_table[i];
  #if !defined(CONFIG_ATMEL_LCD)
  			ushort colreg =
  				( ((cte.red)   << 8) & 0xf800) |
  				( ((cte.green) << 3) & 0x07e0) |
  				( ((cte.blue)  >> 3) & 0x001f) ;
  #ifdef CONFIG_SYS_INVERT_COLORS
  			*cmap = 0xffff - colreg;
  #else
  			*cmap = colreg;
  #endif
  #if defined(CONFIG_MPC823)
  			cmap--;
  #else
  			cmap++;
  #endif
  #else /* CONFIG_ATMEL_LCD */
  			lcd_setcolreg(i, cte.red, cte.green, cte.blue);
  #endif
  		}
  	}
  #endif
  
  	/*
  	 *  BMP format for Monochrome assumes that the state of a
  	 * pixel is described on a per Bit basis, not per Byte.
  	 *  So, in case of Monochrome BMP we should align widths
  	 * on a byte boundary and convert them from Bit to Byte
  	 * units.
  	 *  Probably, PXA250 and MPC823 process 1bpp BMP images in
  	 * their own ways, so make the converting to be MCC200
  	 * specific.
  	 */
  #if defined(CONFIG_MCC200)
  	if (bpix == 1) {
  		width = ((width + 7) & ~7) >> 3;
  		x     = ((x + 7) & ~7) >> 3;
  		pwidth= ((pwidth + 7) & ~7) >> 3;
  	}
  #endif
  
  	padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
  
  #ifdef CONFIG_SPLASH_SCREEN_ALIGN
  	splash_align_axis(&x, pwidth, width);
  	splash_align_axis(&y, panel_info.vl_row, height);
  #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
  
  	if ((x + width) > pwidth)
  		width = pwidth - 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 * bpix / 8);
  
  	switch (bmp_bpix) {
  	case 1: /* pass through */
  	case 8:
  #ifdef CONFIG_LCD_BMP_RLE8
  		if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
  			if (bpix != 16) {
  				/* TODO implement render code for bpix != 16 */
  				printf("Error: only support 16 bpix");
  				return 1;
  			}
  			lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
  			break;
  		}
  #endif
  
  		if (bpix != 16)
  			byte_width = width;
  		else
  			byte_width = width * 2;
  
  		for (i = 0; i < height; ++i) {
  			WATCHDOG_RESET();
  			for (j = 0; j < width; j++) {
  				if (bpix != 16) {
  					FB_PUT_BYTE(fb, bmap);
  				} else {
  					*(uint16_t *)fb = cmap_base[*(bmap++)];
  					fb += sizeof(uint16_t) / sizeof(*fb);
  				}
  			}
  			bmap += (padded_width - width);
  			fb   -= (byte_width + lcd_line_length);
  		}
  		break;
  
  #if defined(CONFIG_BMP_16BPP)
  	case 16:
  		for (i = 0; i < height; ++i) {
  			WATCHDOG_RESET();
  			for (j = 0; j < width; j++)
  				fb_put_word(&fb, &bmap);
  
  			bmap += (padded_width - width) * 2;
  			fb   -= (width * 2 + lcd_line_length);
  		}
  		break;
  #endif /* CONFIG_BMP_16BPP */
  
  #if defined(CONFIG_BMP_32BPP)
  	case 32:
  		for (i = 0; i < height; ++i) {
  			for (j = 0; j < width; j++) {
  				*(fb++) = *(bmap++);
  				*(fb++) = *(bmap++);
  				*(fb++) = *(bmap++);
  				*(fb++) = *(bmap++);
  			}
  			fb  -= (lcd_line_length + width * (bpix / 8));
  		}
  		break;
  #endif /* CONFIG_BMP_32BPP */
  	default:
  		break;
  	};
  
  	lcd_sync();
  	return 0;
  }
  #endif
  
  static void *lcd_logo(void)
  {
  #ifdef CONFIG_SPLASH_SCREEN
  	char *s;
  	ulong addr;
  	static int do_splash = 1;
  
  	if (do_splash && (s = getenv("splashimage")) != NULL) {
  		int x = 0, y = 0;
  		do_splash = 0;
  
  		addr = simple_strtoul (s, NULL, 16);
  #ifdef CONFIG_SPLASH_SCREEN_ALIGN
  		s = getenv("splashpos");
  		if (s != NULL) {
  			if (s[0] == 'm')
  				x = BMP_ALIGN_CENTER;
  			else
  				x = simple_strtol(s, NULL, 0);
  
  			s = strchr(s + 1, ',');
  			if (s != NULL) {
  				if (s[1] == 'm')
  					y = BMP_ALIGN_CENTER;
  				else
  					y = simple_strtol (s + 1, NULL, 0);
  			}
  		}
  #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
  
  		if (bmp_display(addr, x, y) == 0)
  			return (void *)lcd_base;
  	}
  #endif /* CONFIG_SPLASH_SCREEN */
  
  	bitmap_plot(0, 0);
  
  #ifdef CONFIG_LCD_INFO
  	console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
  	console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
  	lcd_show_board_info();
  #endif /* CONFIG_LCD_INFO */
  
  #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
  	return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
  #else
  	return (void *)lcd_base;
  #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
  }
  
  void lcd_position_cursor(unsigned col, unsigned row)
  {
  	console_col = min(col, CONSOLE_COLS - 1);
  	console_row = min(row, CONSOLE_ROWS - 1);
  }
  
  int lcd_get_pixel_width(void)
  {
  	return panel_info.vl_col;
  }
  
  int lcd_get_pixel_height(void)
  {
  	return panel_info.vl_row;
  }
  
  int lcd_get_screen_rows(void)
  {
  	return CONSOLE_ROWS;
  }
  
  int lcd_get_screen_columns(void)
  {
  	return CONSOLE_COLS;
  }
  
  /************************************************************************/
  /************************************************************************/
  