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