reactos/boot/armllb/hw/keyboard.c

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/*
* PROJECT: ReactOS Boot Loader
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: boot/armllb/hw/keyboard.c
* PURPOSE: LLB Keyboard Routines
* PROGRAMMERS: ReactOS Portable Systems Group
*/
#include "precomp.h"
#define E0_KPENTER 96
#define E0_RCTRL 97
#define E0_KPSLASH 98
#define E0_PRSCR 99
#define E0_RALT 100
#define E0_BREAK 101
#define E0_HOME 102
#define E0_UP 103
#define E0_PGUP 104
#define E0_LEFT 105
#define E0_RIGHT 106
#define E0_END 107
#define E0_DOWN 108
#define E0_PGDN 109
#define E0_INS 110
#define E0_DEL 111
#define E1_PAUSE 119
#define E0_MACRO 112
#define E0_F13 113
#define E0_F14 114
#define E0_HELP 115
#define E0_DO 116
#define E0_F17 117
#define E0_KPMINPLUS 118
#define E0_OK 124
#define E0_MSLW 125
#define E0_MSRW 126
#define E0_MSTM 127
/* US 101 KEYBOARD LAYOUT *****************************************************/
CHAR LlbHwScanCodeToAsciiTable[58][2] =
{
{ 0,0 } ,
{ 27, 27 } ,
{ '1','!' } ,
{ '2','@' } ,
{ '3','#' } ,
{ '4','$' } ,
{ '5','%' } ,
{ '6','^' } ,
{ '7','&' } ,
{ '8','*' } ,
{ '9','(' } ,
{ '0',')' } ,
{ '-','_' } ,
{ '=','+' } ,
{ 8,8 } ,
{ 9,9 } ,
{ 'q','Q' } ,
{ 'w','W' } ,
{ 'e','E' } ,
{ 'r','R' } ,
{ 't','T' } ,
{ 'y','Y' } ,
{ 'u','U' } ,
{ 'i','I' } ,
{ 'o','O' } ,
{ 'p','P' } ,
{ '[','{' } ,
{ ']','}' } ,
{ 13,13 } ,
{ 0,0 } ,
{ 'a','A' } ,
{ 's','S' } ,
{ 'd','D' } ,
{ 'f','F' } ,
{ 'g','G' } ,
{ 'h','H' } ,
{ 'j','J' } ,
{ 'k','K' } ,
{ 'l','L' } ,
{ ';',':' } ,
{ 39,34 } ,
{ '`','~' } ,
{ 0,0 } ,
{ '\\','|'} ,
{ 'z','Z' } ,
{ 'x','X' } ,
{ 'c','C' } ,
{ 'v','V' } ,
{ 'b','B' } ,
{ 'n','N' } ,
{ 'm','M' } ,
{ ',','<' } ,
{ '.','>' } ,
{ '/','?' } ,
{ 0,0 } ,
{ 0,0 } ,
{ 0,0 } ,
{ ' ',' ' } ,
};
/* EXTENDED KEY TABLE *********************************************************/
UCHAR LlbHwExtendedScanCodeTable[128] =
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
E0_KPENTER, E0_RCTRL, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, E0_KPSLASH, 0, E0_PRSCR,
E0_RALT, 0, 0, 0,
0, E0_F13, E0_F14, E0_HELP,
E0_DO, E0_F17, 0, 0,
0, 0, E0_BREAK, E0_HOME,
E0_UP, E0_PGUP, 0, E0_LEFT,
E0_OK, E0_RIGHT, E0_KPMINPLUS, E0_END,
E0_DOWN, E0_PGDN, E0_INS, E0_DEL,
0, 0, 0, 0,
0, 0, 0, E0_MSLW,
E0_MSRW, E0_MSTM, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, E0_MACRO,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0
};
/* FUNCTIONS ******************************************************************/
USHORT LlbKbdLastScanCode;
UCHAR
NTAPI
LlbKbdTranslateScanCode(IN USHORT ScanCode,
IN PUCHAR KeyCode)
{
ULONG LastScanCode;
/* Check for extended scan codes */
if ((ScanCode == 0xE0) || (ScanCode == 0xE1))
{
/* We'll get these on the next scan */
LlbKbdLastScanCode = ScanCode;
return 0;
}
/* Check for bogus scan codes */
if ((ScanCode == 0x00) || (ScanCode == 0xFF))
{
/* Reset */
LlbKbdLastScanCode = 0;
return 0;
}
/* Only act on the break, not the make */
if (ScanCode > 0x80) return 0;
/* Keep only simple scan codes */
ScanCode &= 0x7F;
/* Check if this was part of an extended sequence */
if (LlbKbdLastScanCode)
{
/* Save the last scan code and clear it, since we've consumed it now */
LastScanCode = LlbKbdLastScanCode;
LlbKbdLastScanCode = 0;
switch (LastScanCode)
{
/* E0 extended codes */
case 0xE0:
/* Skip bogus codes */
if ((ScanCode == 0x2A) || (ScanCode == 0x36)) return 0;
/* Lookup the code for it */
if (!LlbHwExtendedScanCodeTable[ScanCode]) return 0;
*KeyCode = LlbHwExtendedScanCodeTable[ScanCode];
break;
/* E1 extended codes */
case 0xE1:
/* Only recognize one (the SYSREQ/PAUSE sequence) */
if (ScanCode != 0x1D) return 0;
LlbKbdLastScanCode = 0x100;
break;
/* PAUSE sequence */
case 0x100:
/* Make sure it's the one */
if (ScanCode != 0x45) return 0;
*KeyCode = E1_PAUSE;
break;
}
}
else
{
/* Otherwise, the scancode is the key code */
LlbKbdLastScanCode = 0;
*KeyCode = ScanCode;
}
/* Translation success */
return 1;
}
CHAR
NTAPI
LlbKeyboardGetChar(VOID)
{
UCHAR ScanCode, KeyCode;
do
{
/* Read the scan code and convert it to a virtual key code */
ScanCode = LlbHwKbdRead();
} while (!LlbKbdTranslateScanCode(ScanCode, &KeyCode));
/* Is this ASCII? */
if (KeyCode > 96) return ScanCode;
/* Return the ASCII character */
return LlbHwScanCodeToAsciiTable[KeyCode][0];
}
/* EOF */