| /* |
| * 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" |
| |
| static int _halfdelay = 0; |
| |
| /* ============== 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 == 0) |
| break; |
| |
| if (delay > 0) { |
| mdelay(100); |
| delay--; |
| } |
| } |
| |
| c = inb(0x60); |
| |
| ret = cook_scancodes(c); |
| |
| if (ret != 0) { |
| return ret; |
| } |
| |
| } while (1); |
| |
| return ERR; |
| } |
| |
| /* === Public functions === */ |
| |
| int wgetch(WINDOW *win) |
| { |
| int delay = -1; |
| |
| if (_halfdelay || win->_delay) |
| delay = win->_delay ? 0 : _halfdelay; |
| |
| return curses_getchar(delay); |
| } |
| |
| int nodelay(WINDOW *win, NCURSES_BOOL flag) |
| { |
| win->_delay = flag ? 1 : 0; |
| return 0; |
| } |
| |
| int halfdelay(int tenths) |
| { |
| if (tenths > 255) |
| return ERR; |
| |
| _halfdelay = tenths; |
| return 0; |
| } |
| |
| int nocbreak(void) |
| { |
| /* Remove half delay timeout. */ |
| _halfdelay = 0; |
| return 0; |
| } |
| |
| #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 |
| |