2 * This file is part of the libpayload project.
4 * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
5 * Copyright (C) 2008 Advanced Micro Devices, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * This file handles reading keystrokes from serial and the console
33 * and "cooking" them so that they are correct for curses.
34 * Also, implement key related functions (mainly wgetch)
37 * Actually cook the serial (handle special keys)
40 #include <libpayload-config.h>
44 static int _halfdelay = 0;
46 /* ============== Serial ==================== */
48 #ifdef CONFIG_SERIAL_CONSOLE
49 /* We treat serial like a vt100 terminal. For now we
50 do the cooking in here, but we should probably eventually
51 pass it to dedicated vt100 code */
53 static int getkeyseq(char *buffer, int len, int max)
58 for(i = 0; i < 75; i++) {
59 if (serial_havechar())
67 buffer[len++] = serial_getchar();
96 { "[21~", KEY_F(10) },
97 { "[23~", KEY_F(11) },
98 { "[24~", KEY_F(12) },
102 static int handle_escape(void)
105 int len = getkeyseq(buffer, 0, sizeof(buffer));
111 for(i = 0; escape_codes[i].seq != NULL; i++) {
112 const char *p = escape_codes[i].seq;
114 for(t = 0; t < len; t++) {
115 if (!*p || *p != buffer[t])
121 return escape_codes[i].key;
127 static int cook_serial(unsigned char ch)
131 return KEY_BACKSPACE;
137 return handle_escape();
145 /* ================ Keyboard ================ */
147 static int curses_getchar(int _delay)
149 #if defined(CONFIG_USB_HID) || defined(CONFIG_PC_KEYBOARD) || defined(CONFIG_SERIAL_CONSOLE)
154 #ifdef CONFIG_USB_HID
156 if ((curses_flags & F_ENABLE_CONSOLE) &&
158 c = usbhid_getchar();
159 if (c != 0) return c;
162 #ifdef CONFIG_PC_KEYBOARD
163 if ((curses_flags & F_ENABLE_CONSOLE) &&
164 keyboard_havechar()) {
165 c = keyboard_getchar();
166 if (c != 0) return c;
170 #ifdef CONFIG_SERIAL_CONSOLE
171 if ((curses_flags & F_ENABLE_SERIAL) &&
173 c = serial_getchar();
174 return cook_serial(c);
192 /* === Public functions === */
194 int wgetch(WINDOW *win)
201 _delay = win->_delay;
203 return curses_getchar(_delay);
206 int nodelay(WINDOW *win, NCURSES_BOOL flag)
208 win->_delay = flag ? 0 : -1;
212 int halfdelay(int tenths)
223 /* Remove half delay timeout. */
228 #ifdef CONFIG_VGA_VIDEO_CONSOLE
229 void curses_enable_vga(int state)
232 curses_flags |= F_ENABLE_CONSOLE;
234 curses_flags &= ~F_ENABLE_CONSOLE;
237 int curses_vga_enabled(void)
239 return (curses_flags & F_ENABLE_CONSOLE) != 0;
242 void curses_enable_vga(int state) { }
243 int curses_vga_enabled(void) { return 0; }
246 #ifdef CONFIG_SERIAL_CONSOLE
247 void curses_enable_serial(int state)
250 curses_flags |= F_ENABLE_SERIAL;
252 curses_flags &= ~F_ENABLE_SERIAL;
255 int curses_serial_enabled(void)
257 return (curses_flags & F_ENABLE_SERIAL) != 0;
261 void curses_enable_serial(int state) { }
262 int curses_serial_enabled(void) { return 0; }