i8042.c

UBOOT 源码

/*
 * (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
 */

/* i8042.c - Intel 8042 keyboard driver routines */

/* includes */

#include <common.h>

#ifdef CONFIG_I8042_KBD

#ifdef CONFIG_USE_CPCIDVI
extern u8  gt_cpcidvi_in8(u32 offset);
extern void gt_cpcidvi_out8(u32 offset, u8 data);

#define in8(a)	   gt_cpcidvi_in8(a)
#define out8(a, b) gt_cpcidvi_out8(a,b)
#endif

#include <i8042.h>

/* defines */

#ifdef CONFIG_CONSOLE_CURSOR
extern void console_cursor (int state);
static int blinkCount = CFG_CONSOLE_BLINK_COUNT;
static int cursor_state = 0;
#endif

/* locals */

static int  kbd_input	 = -1;		/* no input yet */
static int  kbd_mapping	 = KBD_US;	/* default US keyboard */
static int  kbd_flags	 = NORMAL;	/* after reset */
static int  kbd_state	 = 0;		/* unshift code */

static void kbd_conv_char (unsigned char scan_code);
static void kbd_led_set (void);
static void kbd_normal (unsigned char scan_code);
static void kbd_shift (unsigned char scan_code);
static void kbd_ctrl (unsigned char scan_code);
static void kbd_num (unsigned char scan_code);
static void kbd_caps (unsigned char scan_code);
static void kbd_scroll (unsigned char scan_code);
static void kbd_alt (unsigned char scan_code);
static int  kbd_input_empty (void);
static int  kbd_reset (void);

static unsigned char kbd_fct_map [144] =
    { /* kbd_fct_map table for scan code */
    0,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan  0- 7 */
   AS,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan  8- F */
   AS,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan 10-17 */
   AS,	 AS,   AS,   AS,   AS,	 CN,   AS,   AS, /* scan 18-1F */
   AS,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan 20-27 */
   AS,	 AS,   SH,   AS,   AS,	 AS,   AS,   AS, /* scan 28-2F */
   AS,	 AS,   AS,   AS,   AS,	 AS,   SH,   AS, /* scan 30-37 */
   AS,	 AS,   CP,   0,	   0,	 0,    0,     0, /* scan 38-3F */
    0,	 0,    0,    0,	   0,	 NM,   ST,   ES, /* scan 40-47 */
   ES,	 ES,   ES,   ES,   ES,	 ES,   ES,   ES, /* scan 48-4F */
   ES,	 ES,   ES,   ES,   0,	 0,    AS,    0, /* scan 50-57 */
    0,	 0,    0,    0,	   0,	 0,    0,     0, /* scan 58-5F */
    0,	 0,    0,    0,	   0,	 0,    0,     0, /* scan 60-67 */
    0,	 0,    0,    0,	   0,	 0,    0,     0, /* scan 68-6F */
   AS,	 0,    0,    AS,   0,	 0,    AS,    0, /* scan 70-77 */
    0,	 AS,   0,    0,	   0,	 AS,   0,     0, /* scan 78-7F */
   AS,	 CN,   AS,   AS,   AK,	 ST,   EX,   EX, /* enhanced   */
   AS,	 EX,   EX,   AS,   EX,	 AS,   EX,   EX	 /* enhanced   */
    };

static unsigned char kbd_key_map [2][5][144] =
    {
    { /* US keyboard */
    { /* unshift code */
    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6',	   /* scan  0- 7 */
  '7',	 '8',	'9',   '0',   '-',   '=',  0x08,  '\t',	   /* scan  8- F */
  'q',	 'w',	'e',   'r',   't',   'y',   'u',   'i',	   /* scan 10-17 */
  'o',	 'p',	'[',   ']',  '\r',   CN,    'a',   's',	   /* scan 18-1F */
  'd',	 'f',	'g',   'h',   'j',   'k',   'l',   ';',	   /* scan 20-27 */
 '\'',	 '`',	SH,   '\\',   'z',   'x',   'c',   'v',	   /* scan 28-2F */
  'b',	 'n',	'm',   ',',   '.',   '/',   SH,	   '*',	   /* scan 30-37 */
  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0,	   /* scan 38-3F */
    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7',	   /* scan 40-47 */
  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1',	   /* scan 48-4F */
  '2',	 '3',	'0',   '.',	0,     0,     0,     0,	   /* scan 50-57 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 58-5F */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 60-67 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 68-6F */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 70-77 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A',	   /* extended */
    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	   /* extended */
    },
    { /* shift code */
    0,	0x1b,	'!',   '@',   '#',   '$',   '%',   '^',	   /* scan  0- 7 */
  '&',	 '*',	'(',   ')',   '_',   '+',  0x08,  '\t',	   /* scan  8- F */
  'Q',	 'W',	'E',   'R',   'T',   'Y',   'U',   'I',	   /* scan 10-17 */
  'O',	 'P',	'{',   '}',  '\r',   CN,    'A',   'S',	   /* scan 18-1F */
  'D',	 'F',	'G',   'H',   'J',   'K',   'L',   ':',	   /* scan 20-27 */
  '"',	 '~',	SH,    '|',   'Z',   'X',   'C',   'V',	   /* scan 28-2F */
  'B',	 'N',	'M',   '<',   '>',   '?',   SH,	   '*',	   /* scan 30-37 */
  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0,	   /* scan 38-3F */
    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7',	   /* scan 40-47 */
  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1',	   /* scan 48-4F */
  '2',	 '3',	'0',   '.',	0,     0,     0,     0,	   /* scan 50-57 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 58-5F */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 60-67 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 68-6F */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 70-77 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A',	   /* extended */
    0,	 'D',	'C',	 0,   'B',     0,   '@',   'P'	   /* extended */
    },
    { /* control code */
 0xff,	0x1b,  0xff,  0x00,  0xff,  0xff,  0xff,  0xff,	   /* scan  0- 7 */
 0x1e,	0xff,  0xff,  0xff,  0x1f,  0xff,  0xff,  '\t',	   /* scan  8- F */
 0x11,	0x17,  0x05,  0x12,  0x14,  0x19,  0x15,  0x09,	   /* scan 10-17 */
 0x0f,	0x10,  0x1b,  0x1d,  '\r',   CN,   0x01,  0x13,	   /* scan 18-1F */
 0x04,	0x06,  0x07,  0x08,  0x0a,  0x0b,  0x0c,  0xff,	   /* scan 20-27 */
 0xff,	0x1c,	SH,   0xff,  0x1a,  0x18,  0x03,  0x16,	   /* scan 28-2F */
 0x02,	0x0e,  0x0d,  0xff,  0xff,  0xff,   SH,	  0xff,	   /* scan 30-37 */
 0xff,	0xff,	CP,   0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 38-3F */
 0xff,	0xff,  0xff,  0xff,  0xff,   NM,    ST,	  0xff,	   /* scan 40-47 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 48-4F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 50-57 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 58-5F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 60-67 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 68-6F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 70-77 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,  0xff,  0xff,	   /* extended */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	   /* extended */
    },
    { /* non numeric code */
    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6',	   /* scan  0- 7 */
  '7',	 '8',	'9',   '0',   '-',   '=',  0x08,  '\t',	   /* scan  8- F */
  'q',	 'w',	'e',   'r',   't',   'y',   'u',   'i',	   /* scan 10-17 */
  'o',	 'p',	'[',   ']',  '\r',   CN,    'a',   's',	   /* scan 18-1F */
  'd',	 'f',	'g',   'h',   'j',   'k',   'l',   ';',	   /* scan 20-27 */
 '\'',	 '`',	SH,   '\\',   'z',   'x',   'c',   'v',	   /* scan 28-2F */
  'b',	 'n',	'm',   ',',   '.',   '/',   SH,	   '*',	   /* scan 30-37 */
  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0,	   /* scan 38-3F */
    0,	   0,	  0,	 0,	0,   NM,    ST,	   'w',	   /* scan 40-47 */
  'x',	 'y',	'l',   't',   'u',   'v',   'm',   'q',	   /* scan 48-4F */
  'r',	 's',	'p',   'n',	0,     0,     0,     0,	   /* scan 50-57 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 58-5F */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 60-67 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 68-6F */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 70-77 */
    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A',	   /* extended */
    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	   /* extended */
    },
    { /* right alt mode - not used in US keyboard */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan	 0 - 7 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan	 8 - F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 10 -17 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 18 -1F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 20 -27 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 28 -2F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 30 -37 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38 -3F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 40 -47 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48 -4F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 50 -57 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58 -5F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60 -67 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68 -6F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70 -77 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78 -7F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* extended    */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	/* extended    */
    }
    },
    { /* german keyboard */
    { /* unshift code */
    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6', /* scan	 0- 7 */
  '7',	 '8',	'9',   '0',  0xe1,  '\'',  0x08,  '\t', /* scan	 8- F */
  'q',	 'w',	'e',   'r',   't',   'z',   'u',   'i', /* scan 10-17 */
  'o',	 'p',  0x81,   '+',  '\r',   CN,    'a',   's', /* scan 18-1F */
  'd',	 'f',	'g',   'h',   'j',   'k',   'l',  0x94, /* scan 20-27 */
 0x84,	 '^',	SH,    '#',   'y',   'x',   'c',   'v', /* scan 28-2F */
  'b',	 'n',	'm',   ',',   '.',   '-',   SH,	   '*', /* scan 30-37 */
  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0, /* scan 38-3F */
    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7', /* scan 40-47 */
  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1', /* scan 48-4F */
  '2',	 '3',	'0',   ',',	0,     0,   '<',     0, /* scan 50-57 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 58-5F */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 60-67 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 68-6F */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 70-77 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A', /* extended */
    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	/* extended */
    },
    { /* shift code */
    0,	0x1b,	'!',   '"',  0x15,   '$',   '%',   '&', /* scan	 0- 7 */
  '/',	 '(',	')',   '=',   '?',   '`',  0x08,  '\t', /* scan	 8- F */
  'Q',	 'W',	'E',   'R',   'T',   'Z',   'U',   'I', /* scan 10-17 */
  'O',	 'P',  0x9a,   '*',  '\r',   CN,    'A',   'S', /* scan 18-1F */
  'D',	 'F',	'G',   'H',   'J',   'K',   'L',  0x99, /* scan 20-27 */
 0x8e,	0xf8,	SH,   '\'',   'Y',   'X',   'C',   'V', /* scan 28-2F */
  'B',	 'N',	'M',   ';',   ':',   '_',   SH,	   '*', /* scan 30-37 */
  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0, /* scan 38-3F */
    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7', /* scan 40-47 */
  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1', /* scan 48-4F */
  '2',	 '3',	'0',   ',',	0,     0,   '>',     0, /* scan 50-57 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 58-5F */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 60-67 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 68-6F */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 70-77 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A', /* extended */
    0,	 'D',	'C',	 0,   'B',     0,   '@',   'P'	/* extended */
    },
    { /* control code */
 0xff,	0x1b,  0xff,  0x00,  0xff,  0xff,  0xff,  0xff, /* scan	 0- 7 */
 0x1e,	0xff,  0xff,  0xff,  0x1f,  0xff,  0xff,  '\t', /* scan	 8- F */
 0x11,	0x17,  0x05,  0x12,  0x14,  0x19,  0x15,  0x09, /* scan 10-17 */
 0x0f,	0x10,  0x1b,  0x1d,  '\r',   CN,   0x01,  0x13, /* scan 18-1F */
 0x04,	0x06,  0x07,  0x08,  0x0a,  0x0b,  0x0c,  0xff, /* scan 20-27 */
 0xff,	0x1c,	SH,   0xff,  0x1a,  0x18,  0x03,  0x16, /* scan 28-2F */
 0x02,	0x0e,  0x0d,  0xff,  0xff,  0xff,   SH,	  0xff, /* scan 30-37 */
 0xff,	0xff,	CP,   0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38-3F */
 0xff,	0xff,  0xff,  0xff,  0xff,   NM,    ST,	  0xff, /* scan 40-47 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48-4F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 50-57 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58-5F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60-67 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68-6F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70-77 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,  0xff,  0xff, /* extended */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	/* extended */
    },
    { /* non numeric code */
    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6', /* scan	 0- 7 */
  '7',	 '8',	'9',   '0',  0xe1,  '\'',  0x08,  '\t', /* scan	 8- F */
  'q',	 'w',	'e',   'r',   't',   'z',   'u',   'i', /* scan 10-17 */
  'o',	 'p',  0x81,   '+',  '\r',   CN,    'a',   's', /* scan 18-1F */
  'd',	 'f',	'g',   'h',   'j',   'k',   'l',  0x94, /* scan 20-27 */
 0x84,	 '^',	SH,	 0,   'y',   'x',   'c',   'v', /* scan 28-2F */
  'b',	 'n',	'm',   ',',   '.',   '-',   SH,	   '*', /* scan 30-37 */
  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0, /* scan 38-3F */
    0,	   0,	  0,	 0,	0,   NM,    ST,	   'w', /* scan 40-47 */
  'x',	 'y',	'l',   't',   'u',   'v',   'm',   'q', /* scan 48-4F */
  'r',	 's',	'p',   'n',	0,     0,   '<',     0, /* scan 50-57 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 58-5F */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 60-67 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 68-6F */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 70-77 */
    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 78-7F */
  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A', /* extended */
    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	/* extended */
    },
    { /* Right alt mode - is used in German keyboard */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan	 0 - 7 */
  '{',	 '[',	']',   '}',  '\\',  0xff,  0xff,  0xff, /* scan	 8 - F */
  '@',	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 10 -17 */
 0xff,	0xff,  0xff,   '~',  0xff,  0xff,  0xff,  0xff, /* scan 18 -1F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 20 -27 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 28 -2F */
 0xff,	0xff,  0xe6,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 30 -37 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38 -3F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 40 -47 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48 -4F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,   '|',  0xff, /* scan 50 -57 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58 -5F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60 -67 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68 -6F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70 -77 */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78 -7F */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* extended    */
 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	/* extended    */
    }
    }
    };

static unsigned char ext_key_map [] =
    {
    0x1c,   /* keypad enter */
    0x1d,   /* right control */
    0x35,   /* keypad slash */
    0x37,   /* print screen */
    0x38,   /* right alt */
    0x46,   /* break */
    0x47,   /* editpad home */
    0x48,   /* editpad up */
    0x49,   /* editpad pgup */
    0x4b,   /* editpad left */
    0x4d,   /* editpad right */
    0x4f,   /* editpad end */
    0x50,   /* editpad dn */
    0x51,   /* editpad pgdn */
    0x52,   /* editpad ins */
    0x53,   /* editpad del */
    0x00    /* map end */
    };

/*******************************************************************************
 *
 * i8042_kbd_init - reset keyboard and init state flags
 */
int i8042_kbd_init (void)
{
    int keymap, try;
    char *penv;

#ifdef CONFIG_USE_CPCIDVI
    if ((penv = getenv ("console")) != NULL) {
	    if (strncmp (penv, "serial", 7) == 0) {
		    return -1;
	    }
    }
#endif
    /* Init keyboard device (default US layout) */
    keymap = KBD_US;
    if ((penv = getenv ("keymap")) != NULL)