Initial revision

1 files changed, 655 insertions, 0 deletions

diff --git a/drivers/i8042.c b/drivers/i8042.c
new file mode 100644
index 00000000000..ce24fc93014
--- /dev/null
+++ b/drivers/i8042.c
@@ -0,0 +1,655 @@
+/*
+ * (C) Copyright 2002 ELTEC Elektronik AG
+ * Frank Gottschling <fgottschling@eltec.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
+ */
+
+/* i8042.c - Intel 8042 keyboard driver routines */
+
+/* includes */
+
+#include <common.h>
+
+#ifdef CONFIG_I8042_KBD
+
+#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;
+
+    /* Init keyboard device (default US layout) */
+    keymap = KBD_US;
+    if ((penv = getenv ("keymap")) != NULL)
+    {
+        if (strncmp (penv, "de", 3) == 0)
+        keymap = KBD_GER;
+    }
+
+    for (try = 0; try < KBD_RESET_TRIES; try++)
+    {
+        if (kbd_reset() == 0)
+        {
+            kbd_mapping   = keymap;
+            kbd_flags     = NORMAL;
+            kbd_state     = 0;
+            kbd_led_set();
+            return 0;
+            }
+    }
+    return -1;
+}
+
+
+/*******************************************************************************
+ *
+ * i8042_tstc - test if keyboard input is available
+ *              option: cursor blinking if called in a loop
+ */
+int i8042_tstc (void)
+{
+    unsigned char scan_code = 0;
+
+#ifdef CONFIG_CONSOLE_CURSOR
+    if (--blinkCount == 0)
+    {
+        cursor_state ^= 1;
+        console_cursor (cursor_state);
+        blinkCount = CFG_CONSOLE_BLINK_COUNT;
+        udelay (10);
+    }
+#endif
+
+    if ((in8 (I8042_STATUS_REG) & 0x01) == 0)
+        return 0;
+    else
+    {
+        scan_code = in8 (I8042_DATA_REG);
+        if (scan_code == 0xfa)
+            return 0;
+
+        kbd_conv_char(scan_code);
+
+        if (kbd_input != -1)
+            return 1;
+    }
+    return 0;
+}
+
+
+/*******************************************************************************
+ *
+ * i8042_getc - wait till keyboard input is available
+ *              option: turn on/off cursor while waiting
+ */
+int i8042_getc (void)
+{
+    int ret_chr;
+    unsigned char scan_code;
+
+    while (kbd_input == -1)
+    {
+        while ((in8 (I8042_STATUS_REG) & 0x01) == 0)
+        {
+#ifdef CONFIG_CONSOLE_CURSOR
+            if (--blinkCount==0)
+            {
+                cursor_state ^= 1;
+                console_cursor (cursor_state);
+                blinkCount = CFG_CONSOLE_BLINK_COUNT;
+            }
+            udelay (10);
+#endif
+        }
+
+        scan_code = in8 (I8042_DATA_REG);
+
+        if (scan_code != 0xfa)
+        kbd_conv_char (scan_code);
+    }
+    ret_chr = kbd_input;
+    kbd_input = -1;
+    return ret_chr;
+}
+
+
+/******************************************************************************/
+
+static void kbd_conv_char (unsigned char scan_code)
+{
+    if (scan_code == 0xe0)
+    {
+        kbd_flags |= EXT;
+        return;
+    }
+
+    /* if high bit of scan_code, set break flag */
+    if (scan_code & 0x80)
+        kbd_flags |=  BRK;
+    else
+        kbd_flags &= ~BRK;
+
+    if ((scan_code == 0xe1) || (kbd_flags & E1))
+    {
+        if (scan_code == 0xe1)
+        {
+            kbd_flags ^= BRK;     /* reset the break flag */
+            kbd_flags ^= E1;      /* bitwise EXOR with E1 flag */
+        }
+        return;
+    }
+
+    scan_code &= 0x7f;
+
+    if (kbd_flags & EXT)
+    {
+        int i;
+
+        kbd_flags ^= EXT;
+        for (i=0; ext_key_map[i]; i++)
+        {
+            if (ext_key_map[i] == scan_code)
+            {
+                scan_code = 0x80 + i;
+                break;
+            }
+        }
+        /* not found ? */
+        if (!ext_key_map[i])
+            return;
+    }
+
+    switch (kbd_fct_map [scan_code])
+    {
+    case AS:  kbd_normal (scan_code);
+        break;
+    case SH:  kbd_shift (scan_code);
+        break;
+    case CN:  kbd_ctrl (scan_code);
+        break;
+    case NM:  kbd_num (scan_code);
+        break;
+    case CP:  kbd_caps (scan_code);
+        break;
+    case ST:  kbd_scroll (scan_code);
+        break;
+    case AK:  kbd_alt (scan_code);
+        break;
+    }
+    return;
+}
+
+
+/******************************************************************************/
+
+static void kbd_normal (unsigned char scan_code)
+{
+    unsigned char chr;
+
+    if ((kbd_flags & BRK) == NORMAL)
+    {
+       chr = kbd_key_map [kbd_mapping][kbd_state][scan_code];
+       if ((chr == 0xff) || (chr == 0x00))
+        {
+            return;
+        }
+
+        /* if caps lock convert upper to lower */
+        if (((kbd_flags & CAPS) == CAPS) && (chr >= 'a' && chr <= 'z'))
+       {
+           chr -= 'a' - 'A';
+       }
+       kbd_input = chr;
+    }
+}
+
+
+/******************************************************************************/
+
+static void kbd_shift (unsigned char scan_code)
+{
+    if ((kbd_flags & BRK) == BRK)
+    {
+        kbd_state = AS;
+        kbd_flags &= (~SHIFT);
+    }
+    else
+    {
+       kbd_state = SH;
+       kbd_flags |= SHIFT;
+    }
+}
+
+
+/******************************************************************************/
+
+static void kbd_ctrl (unsigned char scan_code)
+{
+    if ((kbd_flags & BRK) == BRK)
+    {
+       kbd_state = AS;
+       kbd_flags &= (~CTRL);
+    }
+    else
+    {
+       kbd_state = CN;
+       kbd_flags |= CTRL;
+    }
+}
+
+
+/******************************************************************************/
+
+static void kbd_caps (unsigned char scan_code)
+{
+    if ((kbd_flags & BRK) == NORMAL)
+    {
+       kbd_flags ^= CAPS;
+       kbd_led_set ();            /* update keyboard LED */
+    }
+}
+
+
+/******************************************************************************/
+
+static void kbd_num (unsigned char scan_code)
+{
+    if ((kbd_flags & BRK) == NORMAL)
+    {
+       kbd_flags ^= NUM;
+       kbd_state = (kbd_flags & NUM) ? AS : NM;
+       kbd_led_set ();            /* update keyboard LED */
+    }
+}
+
+
+/******************************************************************************/
+
+static void kbd_scroll (unsigned char scan_code)
+{
+    if ((kbd_flags & BRK) == NORMAL)
+    {
+        kbd_flags ^= STP;
+        kbd_led_set ();            /* update keyboard LED */
+        if (kbd_flags & STP)
+            kbd_input = 0x13;
+        else
+            kbd_input = 0x11;
+    }
+}
+
+/******************************************************************************/
+
+static void kbd_alt (unsigned char scan_code)
+{
+    if ((kbd_flags & BRK) == BRK)
+    {
+        kbd_state = AS;
+        kbd_flags &= (~ALT);
+    }
+    else
+    {
+        kbd_state = AK;
+        kbd_flags &= ALT;
+    }
+}
+
+
+/******************************************************************************/
+
+static void kbd_led_set (void)
+{
+    kbd_input_empty();
+    out8 (I8042_DATA_REG, 0xed);        /* SET LED command */
+    kbd_input_empty();
+    out8 (I8042_DATA_REG, (kbd_flags & 0x7));    /* LED bits only */
+}
+
+
+/******************************************************************************/
+
+static int kbd_input_empty (void)
+{
+    int kbdTimeout = KBD_TIMEOUT;
+
+    /* wait for input buf empty */
+    while ((in8 (I8042_STATUS_REG) & 0x02) && kbdTimeout--)
+        udelay(1000);
+
+    return kbdTimeout;
+}
+
+/******************************************************************************/
+
+static int kbd_reset (void)
+{
+    if (kbd_input_empty() == 0)
+        return -1;
+
+    out8 (I8042_DATA_REG, 0xff);
+
+    udelay(250000);
+
+    if (kbd_input_empty() == 0)
+        return -1;
+
+    out8 (I8042_DATA_REG, 0x60);
+
+    if (kbd_input_empty() == 0)
+        return -1;
+
+    out8 (I8042_DATA_REG, 0x45);
+
+
+    if (kbd_input_empty() == 0)
+        return -1;
+
+    out8 (I8042_COMMAND_REG, 0xae);
+
+    if (kbd_input_empty() == 0)
+        return -1;
+
+    return 0;
+}
+
+#endif /* CONFIG_I8042_KBD */