cfb_console.c

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/*
 * (C) Copyright 2002 ELTEC Elektronik AG
 * Frank Gottschling <[e-mail]>
 *
 * 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
 */

/*
 * cfb_console.c
 *
 * Color Framebuffer Console driver for 8/15/16/24/32 bits per pixel.
 *
 * At the moment only the 8x16 font is tested and the font fore- and
 * background color is limited to black/white/gray colors. The Linux
 * logo can be placed in the upper left corner and additional board
 * information strings (that normaly goes to serial port) can be drawed.
 *
 * The console driver can use the standard PC keyboard interface (i8042)
 * for character input. Character output goes to a memory mapped video
 * framebuffer with little or big-endian organisation.
 * With environment setting 'console=serial' the console i/o can be
 * forced to serial port.

 The driver uses graphic specific defines/parameters/functions:

 (for SMI LynxE graphic chip)

 CONFIG_VIDEO_SMI_LYNXEM - use graphic driver for SMI 710,712,810
 VIDEO_FB_LITTLE_ENDIAN	 - framebuffer organisation default: big endian
 VIDEO_HW_RECTFILL	 - graphic driver supports hardware rectangle fill
 VIDEO_HW_BITBLT	 - graphic driver supports hardware bit blt

 Console Parameters are set by graphic drivers global struct:

 VIDEO_VISIBLE_COLS	     - x resolution
 VIDEO_VISIBLE_ROWS	     - y resolution
 VIDEO_PIXEL_SIZE	     - storage size in byte per pixel
 VIDEO_DATA_FORMAT	     - graphical data format GDF
 VIDEO_FB_ADRS		     - start of video memory

 CONFIG_I8042_KBD	     - AT Keyboard driver for i8042
 VIDEO_KBD_INIT_FCT	     - init function for keyboard
 VIDEO_TSTC_FCT		     - keyboard_tstc function
 VIDEO_GETC_FCT		     - keyboard_getc function

 CONFIG_CONSOLE_CURSOR	     - on/off drawing cursor is done with delay
			       loop in VIDEO_TSTC_FCT (i8042)
 CFG_CONSOLE_BLINK_COUNT     - value for delay loop - blink rate
 CONFIG_CONSOLE_TIME	     - display time/date in upper right corner,
			       needs CFG_CMD_DATE and CONFIG_CONSOLE_CURSOR
 CONFIG_VIDEO_LOGO	     - display Linux Logo in upper left corner
 CONFIG_VIDEO_BMP_LOGO	     - use bmp_logo instead of linux_logo
 CONFIG_CONSOLE_EXTRA_INFO   - display additional board information strings
			       that normaly goes to serial port. This define
			       requires a board specific function:
			       video_drawstring (VIDEO_INFO_X,
						 VIDEO_INFO_Y + i*VIDEO_FONT_HEIGHT,
						 info);
			       that fills a info buffer at i=row.
			       s.a: board/eltec/bab7xx.
CONFIG_VGA_AS_SINGLE_DEVICE  - If set the framebuffer device will be initialised
			       as an output only device. The Keyboard driver
			       will not be set-up. This may be used, if you
			       have none or more than one Keyboard devices
			       (USB Keyboard, AT Keyboard).

CONFIG_VIDEO_SW_CURSOR:	     - Draws a cursor after the last character. No
			       blinking is provided. Uses the macros CURSOR_SET
			       and CURSOR_OFF.
CONFIG_VIDEO_HW_CURSOR:	     - Uses the hardware cursor capability of the
			       graphic chip. Uses the macro CURSOR_SET.
			       ATTENTION: If booting an OS, the display driver
			       must disable the hardware register of the graphic
			       chip. Otherwise a blinking field is displayed
*/

#include <common.h>
#include <command.h>
#include <bmp_layout.h>
#ifdef CONFIG_CFB_CONSOLE
#undef CONFIG_CONSOLE_EXTRA_INFO

#include <malloc.h>

/*****************************************************************************/
/* Console device defines with SMI graphic				     */
/* Any other graphic must change this section				     */
/*****************************************************************************/


#ifdef  CONFIG_VIDEO_SM501
#include <sm501.h>
#include <sm501acc.h>
#define VIDEO_FB_LITTLE_ENDIAN
#define VIDEO_HW_RECTFILL
#define VIDEO_HW_BITBLT
#endif

/*****************************************************************************/
/* Defines for the CT69000 driver					     */
/*****************************************************************************/
#ifdef	CONFIG_VIDEO_CT69000

#define VIDEO_FB_LITTLE_ENDIAN
#define VIDEO_HW_RECTFILL
#define VIDEO_HW_BITBLT
#endif

/*****************************************************************************/
/* Defines for the SED13806 driver					     */
/*****************************************************************************/
#ifdef CONFIG_VIDEO_SED13806

#ifndef CONFIG_TOTAL5200
#define VIDEO_FB_LITTLE_ENDIAN
#endif
#define VIDEO_HW_RECTFILL
#define VIDEO_HW_BITBLT
#endif

/*****************************************************************************/
/* Include video_fb.h after definitions of VIDEO_HW_RECTFILL etc	     */
/*****************************************************************************/
#include <video_fb.h>

/*****************************************************************************/
/* some Macros								     */
/*****************************************************************************/
#define VIDEO_VISIBLE_COLS	(pGD->winSizeX)
#define VIDEO_VISIBLE_ROWS	(pGD->winSizeY)
#define VIDEO_PIXEL_SIZE	(pGD->gdfBytesPP)
#define VIDEO_DATA_FORMAT	(pGD->gdfIndex)
#define VIDEO_FB_ADRS		(pGD->frameAdrs)

/*****************************************************************************/
/* Console device defines with i8042 keyboard controller		     */
/* Any other keyboard controller must change this section		     */
/*****************************************************************************/

#ifdef	CONFIG_I8042_KBD
#include <i8042.h>

#define VIDEO_KBD_INIT_FCT	i8042_kbd_init()
#define VIDEO_TSTC_FCT		i8042_tstc
#define VIDEO_GETC_FCT		i8042_getc
#endif

/*****************************************************************************/
/* Console device							     */
/*****************************************************************************/

#include <version.h>
#include <linux/types.h>
#include <devices.h>
#include <video_font.h>
#ifdef CFG_CMD_DATE
#include <rtc.h>

#endif

#if (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
#include <watchdog.h>
#include <bmp_layout.h>
#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) || CONFIG_SPLASH_SCREEN */

/*****************************************************************************/
/* Cursor definition:							     */
/* CONFIG_CONSOLE_CURSOR:  Uses a timer function (see drivers/i8042.c) to    */
/*			   let the cursor blink. Uses the macros CURSOR_OFF  */
/*			   and CURSOR_ON.				     */
/* CONFIG_VIDEO_SW_CURSOR: Draws a cursor after the last character. No	     */
/*			   blinking is provided. Uses the macros CURSOR_SET  */
/*			   and CURSOR_OFF.				     */
/* CONFIG_VIDEO_HW_CURSOR: Uses the hardware cursor capability of the	     */
/*			   graphic chip. Uses the macro CURSOR_SET.	     */
/*			   ATTENTION: If booting an OS, the display driver   */
/*			   must disable the hardware register of the graphic */
/*			   chip. Otherwise a blinking field is displayed     */
/*****************************************************************************/
#if !defined(CONFIG_CONSOLE_CURSOR) && \
    !defined(CONFIG_VIDEO_SW_CURSOR) && \
    !defined(CONFIG_VIDEO_HW_CURSOR)
/* no Cursor defined */
#define CURSOR_ON
#define CURSOR_OFF
#define CURSOR_SET
#endif

#ifdef	CONFIG_CONSOLE_CURSOR
#ifdef	CURSOR_ON
#error	only one of CONFIG_CONSOLE_CURSOR,CONFIG_VIDEO_SW_CURSOR,CONFIG_VIDEO_HW_CURSOR can be defined
#endif
void	console_cursor (int state);
#define CURSOR_ON  console_cursor(1);
#define CURSOR_OFF console_cursor(0);
#define CURSOR_SET
#ifndef CONFIG_I8042_KBD
#warning Cursor drawing on/off needs timer function s.a. drivers/i8042.c
#endif
#else
#ifdef	CONFIG_CONSOLE_TIME
#error	CONFIG_CONSOLE_CURSOR must be defined for CONFIG_CONSOLE_TIME
#endif
#endif /* CONFIG_CONSOLE_CURSOR */

#ifdef	CONFIG_VIDEO_SW_CURSOR
#ifdef	CURSOR_ON
#error	only one of CONFIG_CONSOLE_CURSOR,CONFIG_VIDEO_SW_CURSOR,CONFIG_VIDEO_HW_CURSOR can be defined
#endif
#define CURSOR_ON
#define CURSOR_OFF video_putchar(console_col * VIDEO_FONT_WIDTH,\
				 console_row * VIDEO_FONT_HEIGHT, ' ');
#define CURSOR_SET video_set_cursor();
#endif /* CONFIG_VIDEO_SW_CURSOR */


#ifdef CONFIG_VIDEO_HW_CURSOR
#ifdef	CURSOR_ON
#error	only one of CONFIG_CONSOLE_CURSOR,CONFIG_VIDEO_SW_CURSOR,CONFIG_VIDEO_HW_CURSOR can be defined
#endif
#define CURSOR_ON
#define CURSOR_OFF
#define CURSOR_SET video_set_hw_cursor(console_col * VIDEO_FONT_WIDTH, \
		  (console_row * VIDEO_FONT_HEIGHT) + VIDEO_LOGO_HEIGHT);
#endif	/* CONFIG_VIDEO_HW_CURSOR */

#ifdef	CONFIG_VIDEO_LOGO
#ifdef	CONFIG_VIDEO_BMP_LOGO
#include <bmp_logo.h>
#include <bmp_layout.h>
#define VIDEO_LOGO_WIDTH	BMP_LOGO_WIDTH
#define VIDEO_LOGO_HEIGHT	BMP_LOGO_HEIGHT
#define VIDEO_LOGO_LUT_OFFSET	BMP_LOGO_OFFSET
#define VIDEO_LOGO_COLORS	BMP_LOGO_COLORS

#else	/* CONFIG_VIDEO_BMP_LOGO */
#define LINUX_LOGO_WIDTH	80
#define LINUX_LOGO_HEIGHT	80
#define LINUX_LOGO_COLORS	214
#define LINUX_LOGO_LUT_OFFSET	0x20
#define __initdata
#include <linux_logo.h>
#define VIDEO_LOGO_WIDTH	LINUX_LOGO_WIDTH
#define VIDEO_LOGO_HEIGHT	LINUX_LOGO_HEIGHT
#define VIDEO_LOGO_LUT_OFFSET	LINUX_LOGO_LUT_OFFSET
#define VIDEO_LOGO_COLORS	LINUX_LOGO_COLORS
#endif	/* CONFIG_VIDEO_BMP_LOGO */
#define VIDEO_INFO_X		(VIDEO_LOGO_WIDTH)
#define VIDEO_INFO_Y		(VIDEO_FONT_HEIGHT/2)
#else	/* CONFIG_VIDEO_LOGO */
#define VIDEO_LOGO_WIDTH	0
#define VIDEO_LOGO_HEIGHT	0
#endif	/* CONFIG_VIDEO_LOGO */

#define VIDEO_COLS		VIDEO_VISIBLE_COLS
#define VIDEO_ROWS		VIDEO_VISIBLE_ROWS
#define VIDEO_SIZE		(VIDEO_ROWS*VIDEO_COLS*VIDEO_PIXEL_SIZE)
#define VIDEO_PIX_BLOCKS	(VIDEO_SIZE >> 2)
#define VIDEO_LINE_LEN		(VIDEO_COLS*VIDEO_PIXEL_SIZE)
#define VIDEO_BURST_LEN		(VIDEO_COLS/8)

#ifdef	CONFIG_VIDEO_LOGO
#define CONSOLE_ROWS		((VIDEO_ROWS - VIDEO_LOGO_HEIGHT) / VIDEO_FONT_HEIGHT)
#else
#define CONSOLE_ROWS		(VIDEO_ROWS / VIDEO_FONT_HEIGHT)
#endif

#define CONSOLE_COLS		(VIDEO_COLS / VIDEO_FONT_WIDTH)
#define CONSOLE_ROW_SIZE	(VIDEO_FONT_HEIGHT * VIDEO_LINE_LEN)
#define CONSOLE_ROW_FIRST	(video_console_address)
#define CONSOLE_ROW_SECOND	(video_console_address + CONSOLE_ROW_SIZE)
#define CONSOLE_ROW_LAST	(video_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE)
#define CONSOLE_SIZE		(CONSOLE_ROW_SIZE * CONSOLE_ROWS)
#define CONSOLE_SCROLL_SIZE	(CONSOLE_SIZE - CONSOLE_ROW_SIZE)

/* Macros */
#ifdef	VIDEO_FB_LITTLE_ENDIAN
#define SWAP16(x)	 ((((x) & 0x00ff) << 8) | ( (x) >> 8))
#define SWAP32(x)	 ((((x) & 0x000000ff) << 24) | (((x) & 0x0000ff00) << 8)|\
			  (((x) & 0x00ff0000) >>  8) | (((x) & 0xff000000) >> 24) )
#define SHORTSWAP32(x)	 ((((x) & 0x000000ff) <<  8) | (((x) & 0x0000ff00) >> 8)|\
			  (((x) & 0x00ff0000) <<  8) | (((x) & 0xff000000) >> 8) )
#else
#define SWAP16(x)	 (x)
#define SWAP32(x)	 (x)
#define SHORTSWAP32(x)	 (x)
#endif

#if defined(DEBUG) || defined(DEBUG_CFB_CONSOLE)
#define PRINTD(x)	  printf(x)
#else
#define PRINTD(x)
#endif


#ifdef CONFIG_CONSOLE_EXTRA_INFO
extern void video_get_info_str (    /* setup a board string: type, speed, etc. */
    int line_number,	    /* location to place info string beside logo */
    char *info		    /* buffer for info string */
    );

#endif

/* Locals */
static GraphicDevice *pGD;	/* Pointer to Graphic array */

static void *video_fb_address;		/* frame buffer address */
static void *video_console_address;	/* console buffer start address */

static int console_col = 0; /* cursor col */
static int console_row = 0; /* cursor row */

static u32 eorx, fgx, bgx;  /* color pats */

static const int video_font_draw_table8[] = {
	    0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff,
	    0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff,
	    0xff000000, 0xff0000ff, 0xff00ff00, 0xff00ffff,
	    0xffff0000, 0xffff00ff, 0xffffff00, 0xffffffff };

static const int video_font_draw_table15[] = {
	    0x00000000, 0x00007fff, 0x7fff0000, 0x7fff7fff };

static const int video_font_draw_table16[] = {
	    0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff };

static const int video_font_draw_table24[16][3] = {
	    { 0x00000000, 0x00000000, 0x00000000 },
	    { 0x00000000, 0x00000000, 0x00ffffff },
	    { 0x00000000, 0x0000ffff, 0xff000000 },
	    { 0x00000000, 0x0000ffff, 0xffffffff },
	    { 0x000000ff, 0xffff0000, 0x00000000 },
	    { 0x000000ff, 0xffff0000, 0x00ffffff },
	    { 0x000000ff, 0xffffffff, 0xff000000 },
	    { 0x000000ff, 0xffffffff, 0xffffffff },
	    { 0xffffff00, 0x00000000, 0x00000000 },
	    { 0xffffff00, 0x00000000, 0x00ffffff },
	    { 0xffffff00, 0x0000ffff, 0xff000000 },
	    { 0xffffff00, 0x0000ffff, 0xffffffff },
	    { 0xffffffff, 0xffff0000, 0x00000000 },
	    { 0xffffffff, 0xffff0000, 0x00ffffff },
	    { 0xffffffff, 0xffffffff, 0xff000000 },
	    { 0xffffffff, 0xffffffff, 0xffffffff } };

static const int video_font_draw_table32[16][4] = {
	    { 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
	    { 0x00000000, 0x00000000, 0x00000000, 0x00ffffff },
	    { 0x00000000, 0x00000000, 0x00ffffff, 0x00000000 },
	    { 0x00000000, 0x00000000, 0x00ffffff, 0x00ffffff },
	    { 0x00000000, 0x00ffffff, 0x00000000, 0x00000000 },
	    { 0x00000000, 0x00ffffff, 0x00000000, 0x00ffffff },
	    { 0x00000000, 0x00ffffff, 0x00ffffff, 0x00000000 },
	    { 0x00000000, 0x00ffffff, 0x00ffffff, 0x00ffffff },
	    { 0x00ffffff, 0x00000000, 0x00000000, 0x00000000 },
	    { 0x00ffffff, 0x00000000, 0x00000000, 0x00ffffff },
	    { 0x00ffffff, 0x00000000, 0x00ffffff, 0x00000000 },
	    { 0x00ffffff, 0x00000000, 0x00ffffff, 0x00ffffff },
	    { 0x00ffffff, 0x00ffffff, 0x00000000, 0x00000000 },
	    { 0x00ffffff, 0x00ffffff, 0x00000000, 0x00ffffff },
	    { 0x00ffffff, 0x00ffffff, 0x00ffffff, 0x00000000 },
	    { 0x00ffffff, 0x00ffffff, 0x00ffffff, 0x00ffffff } };


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

static void video_drawchars (int xx, int yy, unsigned char *s, int count)
{
	u8 *cdat, *dest, *dest0;
	int rows, offset, c;

#ifdef CONFIG_VIDEO_SM501
    WaitIdleEmpty();
#endif
	offset = yy * VIDEO_LINE_LEN + xx * VIDEO_PIXEL_SIZE;
	if(offset % 4)
		offset = offset / 4 * 4;
	dest0 = video_fb_address + offset;

	switch (VIDEO_DATA_FORMAT) {
	case GDF__8BIT_INDEX:
	case GDF__8BIT_332RGB:
		while (count--) {
			c = *s;
			cdat = video_fontdata + c * VIDEO_FONT_HEIGHT;
			for (rows = VIDEO_FONT_HEIGHT, dest = dest0;
			     rows--;
			     dest += VIDEO_LINE_LEN) {
				u8 bits = *cdat++;

				((u32 *) dest)[0] = (video_font_draw_table8[bits >> 4] & eorx) ^ bgx;
				((u32 *) dest)[1] = (video_font_draw_table8[bits & 15] & eorx) ^ bgx;
			}
			dest0 += VIDEO_FONT_WIDTH * VIDEO_PIXEL_SIZE;
			s++;
		}
		break;

	case GDF_15BIT_555RGB:
		while (count--) {
			c = *s;
			cdat = video_fontdata + c * VIDEO_FONT_HEIGHT;
			for (rows = VIDEO_FONT_HEIGHT, dest = dest0;
			     rows--;
			     dest += VIDEO_LINE_LEN) {
				u8 bits = *cdat++;