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40#include <libpayload-config.h>
41#include <usb/usb.h>
42#include "local.h"
43
44static int _halfdelay = 0;
45
46
47
48#ifdef CONFIG_SERIAL_CONSOLE
49
50
51
52
53static int getkeyseq(char *buffer, int len, int max)
54{
55 int i;
56
57 while (1) {
58 for(i = 0; i < 75; i++) {
59 if (serial_havechar())
60 break;
61 mdelay(1);
62 }
63
64 if (i == 75)
65 return len;
66
67 buffer[len++] = serial_getchar();
68 if (len == max)
69 return len;
70 }
71}
72
73static struct {
74 char *seq;
75 int key;
76} escape_codes[] = {
77 { "[A", KEY_UP },
78 { "[B", KEY_DOWN },
79 { "[C", KEY_RIGHT },
80 { "[D", KEY_LEFT },
81 { "[F", KEY_END },
82 { "[H", KEY_HOME },
83 { "[2~", KEY_IC },
84 { "[3~", KEY_DC },
85 { "[5~", KEY_PPAGE },
86 { "[6~", KEY_NPAGE },
87 { "OP", KEY_F(1) },
88 { "OQ", KEY_F(2) },
89 { "OR", KEY_F(3) },
90 { "OS", KEY_F(4) },
91 { "[15~", KEY_F(5) },
92 { "[17~", KEY_F(6) },
93 { "[18~", KEY_F(7) },
94 { "[19~", KEY_F(8) },
95 { "[20~", KEY_F(9) },
96 { "[21~", KEY_F(10) },
97 { "[23~", KEY_F(11) },
98 { "[24~", KEY_F(12) },
99 { NULL },
100};
101
102static int handle_escape(void)
103{
104 char buffer[5];
105 int len = getkeyseq(buffer, 0, sizeof(buffer));
106 int i, t;
107
108 if (len == 0)
109 return 27;
110
111 for(i = 0; escape_codes[i].seq != NULL; i++) {
112 char *p = escape_codes[i].seq;
113
114 for(t = 0; t < len; t++) {
115 if (!*p || *p != buffer[t])
116 break;
117 p++;
118 }
119
120 if (t == len)
121 return escape_codes[i].key;
122 }
123
124 return 0;
125}
126
127static int cook_serial(unsigned char ch)
128{
129 switch(ch) {
130 case 8:
131 return KEY_BACKSPACE;
132
133 case 13:
134 return KEY_ENTER;
135
136 case 27:
137 return handle_escape();
138
139 default:
140 return ch;
141 }
142}
143#endif
144
145
146
147static int curses_getchar(int delay)
148{
149#if defined(CONFIG_USB_HID) || defined(CONFIG_PC_KEYBOARD) || defined(CONFIG_SERIAL_CONSOLE)
150 unsigned short c;
151#endif
152
153 do {
154#ifdef CONFIG_USB_HID
155 usb_poll();
156 if ((curses_flags & F_ENABLE_CONSOLE) &&
157 usbhid_havechar()) {
158 c = usbhid_getchar();
159 if (c != 0) return c;
160 }
161#endif
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;
167 }
168#endif
169
170#ifdef CONFIG_SERIAL_CONSOLE
171 if ((curses_flags & F_ENABLE_SERIAL) &&
172 serial_havechar()) {
173 c = serial_getchar();
174 return cook_serial(c);
175 }
176#endif
177
178 if (delay == 0)
179 break;
180
181 if (delay > 0) {
182 mdelay(1);
183 delay--;
184 }
185
186
187 } while (1);
188
189 return ERR;
190}
191
192
193
194int wgetch(WINDOW *win)
195{
196 int delay = -1;
197
198 if (_halfdelay)
199 delay = _halfdelay;
200 else
201 delay = win->_delay;
202
203 return curses_getchar(delay);
204}
205
206int nodelay(WINDOW *win, NCURSES_BOOL flag)
207{
208 win->_delay = flag ? 0 : -1;
209 return 0;
210}
211
212int halfdelay(int tenths)
213{
214 if (tenths > 255)
215 return ERR;
216
217 _halfdelay = tenths;
218 return 0;
219}
220
221int nocbreak(void)
222{
223
224 _halfdelay = 0;
225 return 0;
226}
227
228#ifdef CONFIG_VGA_VIDEO_CONSOLE
229void curses_enable_vga(int state)
230{
231 if (state)
232 curses_flags |= F_ENABLE_CONSOLE;
233 else
234 curses_flags &= ~F_ENABLE_CONSOLE;
235}
236
237int curses_vga_enabled(void)
238{
239 return (curses_flags & F_ENABLE_CONSOLE) != 0;
240}
241#else
242void curses_enable_vga(int state) { }
243int curses_vga_enabled(void) { return 0; }
244#endif
245
246#ifdef CONFIG_SERIAL_CONSOLE
247void curses_enable_serial(int state)
248{
249 if (state)
250 curses_flags |= F_ENABLE_SERIAL;
251 else
252 curses_flags &= ~F_ENABLE_SERIAL;
253}
254
255int curses_serial_enabled(void)
256{
257 return (curses_flags & F_ENABLE_SERIAL) != 0;
258}
259
260#else
261void curses_enable_serial(int state) { }
262int curses_serial_enabled(void) { return 0; }
263#endif
264
265
