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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This file handles reading keystrokes from serial and the console
* and "cooking" them so that they are correct for curses.
* Also, implement key related functions (mainly wgetch)
*
* TODO:
* Actually cook the serial (handle special keys)
*/
#include "local.h"
/* ============== Serial ==================== */
/* FIXME: Cook the serial correctly */
static int cook_serial(unsigned char ch)
{
return (int) ch;
}
/* ================ Keyboard ================ */
/* Scancode macros */
#define DOWN(_c) (0x80 | (_c))
#define UP(_c) (_c)
#define ISDOWN(_c) ((_c) & 0x80)
#define ISUP(_c) (!ISDOWN((_c)))
#define SCANCODE(_c) ((_c) & ~0x80)
/* Scancode definitions for the modifiers */
#define SCANCODE_RSHIFT 0x36
#define SCANCODE_LSHIFT 0x2a
#define SCANCODE_CAPSLOCK 0x3a
#define SCANCODE_LALT 0x38
#define SCANCODE_LCTRL 0x1d
/* Modifier flags */
#define SHIFT_MODIFIER 0x1
#define CAPSLOCK_MODIFIER 0x2
#define ALT_MODIFIER 0x4
#define CTRL_MODIFIER 0x8
#define CTRL(_c) (_c & 0x1f)
struct {
int normal;
int shift;
} scancode_map[] = {
{ },
{ CTRL('['), CTRL('[')},
{ '1', '!' },
{ '2', '@' },
{ '3', '#' },
{ '4', '$' },
{ '5', '%' },
{ '6', '^' },
{ '7', '&' },
{ '8', '*' },
{ '9', '(' },
{ '0', ')' },
{ '-', '_' },
{ '=', '+' },
{ KEY_BACKSPACE, KEY_BACKSPACE},
{ CTRL('I' ), KEY_BTAB }, /* 0x0F */
{ 'q', 'Q' },
{ 'w', 'W' },
{ 'e', 'E' },
{ 'r', 'R' },
{ 't', 'T' },
{ 'y', 'Y' },
{ 'u', 'U' },
{ 'i', 'I' },
{ 'o', 'O' },
{ 'p', 'P' },
{ '[', '{' },
{ ']', '{' },
{ KEY_ENTER, KEY_ENTER },
{ 0 , 0 },
{ 'a', 'A' },
{ 's', 'S' }, /* 0x1F */
{ 'd', 'D' },
{ 'f', 'F' },
{ 'g', 'G' },
{ 'h', 'H' },
{ 'j', 'J' },
{ 'k', 'K' },
{ 'l', 'L' },
{ ';', ':' },
{ '\'', '\"' },
{ '`', '~', },
{ 0, 0 },
{ '\\', '|' },
{ 'z', 'Z' },
{ 'x', 'X' },
{ 'c', 'C' },
{ 'v', 'V' }, /* 0x2F */
{ 'b', 'B' },
{ 'n', 'N' },
{ 'm', 'M' },
{ ',', '<'},
{ '.', '>' },
{ '/', '?' },
{ 0, 0 }, /* RSHIFT */
{ '*', '*' },
{ 0, 0 }, /* LALT */
{ ' ', ' ' }, /* Space */
{ 0, 0 }, /* Capslock */
{ KEY_F(1), KEY_F(1) },
{ KEY_F(2), KEY_F(2) },
{ KEY_F(3), KEY_F(3) },
{ KEY_F(4), KEY_F(4) },
{ KEY_F(5), KEY_F(5) }, /* 0x3F */
{ KEY_F(6), KEY_F(6) },
{ KEY_F(7), KEY_F(7) },
{ KEY_F(8), KEY_F(8) },
{ KEY_F(9), KEY_F(9) },
{ KEY_F(10), KEY_F(10) },
{ 0, 0 }, /* Numlock */
{ 0, 0 }, /* Scroll lock */
{ KEY_HOME, KEY_HOME },
{ KEY_UP, KEY_UP },
{ KEY_PPAGE, KEY_PPAGE },
{ '-', '-' },
{ KEY_LEFT, KEY_LEFT },
{ 0, 0 },
{ KEY_RIGHT, KEY_RIGHT },
{ '-', '-' },
{ KEY_END, KEY_END }, /* 0x4F */
{ KEY_DOWN, KEY_DOWN },
{ KEY_NPAGE, KEY_NPAGE },
{ KEY_IC, KEY_IC },
{ KEY_DC, KEY_DC },
{ 0, 0 }, /* sysreq */
{ 0, 0 },
{ KEY_F(11), KEY_F(11) },
{ KEY_F(12), KEY_F(12) },
};
static int cook_scancodes(unsigned char code)
{
static int modifiers = 0;
int ch = 0, sc, shift;
switch (code) {
case DOWN(SCANCODE_RSHIFT):
case DOWN(SCANCODE_LSHIFT):
modifiers |= SHIFT_MODIFIER;
return 0;
case UP(SCANCODE_RSHIFT):
case UP(SCANCODE_LSHIFT):
modifiers &= ~SHIFT_MODIFIER;
return 0;
case UP(SCANCODE_CAPSLOCK):
if (modifiers & CAPSLOCK_MODIFIER)
modifiers &= ~CAPSLOCK_MODIFIER;
else
modifiers |= CAPSLOCK_MODIFIER;
return 0;
case DOWN(SCANCODE_LALT):
modifiers |= ALT_MODIFIER;
return 0;
case UP(SCANCODE_LALT):
modifiers &= ~ALT_MODIFIER;
return 0;
case DOWN(SCANCODE_LCTRL):
modifiers |= CTRL_MODIFIER;
return 0;
case UP(SCANCODE_LCTRL):
modifiers &= ~CTRL_MODIFIER;
return 0;
}
/* Only process keys on an upstroke. */
if (!ISUP(code))
return 0;
sc = SCANCODE(code);
if (sc == 0 || sc > 0x59)
return ERR;
shift = (modifiers & SHIFT_MODIFIER) ^ (modifiers & CAPSLOCK_MODIFIER);
ch = shift ? scancode_map[sc].shift : scancode_map[sc].normal;
if (modifiers & CTRL_MODIFIER)
ch = (ch >= 0x3F && ch <= 0x5F) ? CTRL(ch) : 0;
return ch;
}
static int curses_getchar(int delay)
{
unsigned char c = 0;
int ret;
do {
if (curses_flags & F_ENABLE_CONSOLE)
c = inb(0x64);
if ((c & 1) == 0) {
if ((curses_flags & F_ENABLE_SERIAL) &&
serial_havechar()) {
c = serial_getchar();
return cook_serial(c);
}
if (!delay)
break;
}
c = inb(0x60);
ret = cook_scancodes(c);
if (ret != 0) {
return ret;
}
} while (1);
return ERR;
}
/* === Public functions === */
int wgetch(WINDOW *win)
{
return curses_getchar(win->_delay);
}
int nodelay(WINDOW *win, NCURSES_BOOL flag)
{
win->_delay = flag ? 0 : -1;
}
#ifdef CONFIG_VGA_CONSOLE
void curses_enable_vga(int state)
{
if (state)
curses_flags |= F_ENABLE_CONSOLE;
else
curses_flags &= ~F_ENABLE_CONSOLE;
}
#else
void curses_enable_vga(int state) { }
#endif
#ifdef CONFIG_SERIAL_CONSOLE
void curses_enable_serial(int state)
{
if (state)
curses_flags |= F_ENABLE_SERIAL;
else
curses_flags &= ~F_ENABLE_SERIAL;
}
#else
void curses_enable_serial(int state) { }
#endif
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