1 /* $NetBSD: unixcons.c,v 1.3 2014/03/26 08:02:38 christos Exp $ */
2
3 /*
4 * Copyright (c) 2009 NONAKA Kimihiro <nonaka@netbsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "boot.h"
29 #include "bootinfo.h"
30 #include "unixdev.h"
31
32 #include "compat_linux.h"
33 #include "termios.h"
34
35 struct btinfo_console bi_cons;
36
37 static int iodev = CONSDEV_GLASS;
38 static int infd = 0;
39 static int outfd = 1;
40
41 static const char *comdevname[] = {
42 "/dev/ttyS0",
43 };
44
45 static void common_putc(int fd, int c);
46 static int common_getc(int fd, int timo);
47
48 void
consinit(int dev,int speed)49 consinit(int dev, int speed)
50 {
51 struct linux_termios termios;
52 int fd;
53
54 switch (dev) {
55 case CONSDEV_COM0:
56 iodev = dev;
57 break;
58
59 case CONSDEV_GLASS:
60 default:
61 glass_console:
62 iodev = CONSDEV_GLASS;
63 break;
64 }
65
66 if (infd >= 0 && infd == outfd) {
67 uclose(infd);
68 infd = 0;
69 outfd = 1;
70 }
71
72 if (iodev == CONSDEV_GLASS) {
73 infd = 0;
74 outfd = 1;
75
76 strlcpy(bi_cons.devname, "glass", sizeof(bi_cons.devname));
77 bi_cons.addr = -1;
78 bi_cons.speed = -1;
79 } else {
80 fd = uopen(comdevname[iodev - CONSDEV_COM0], LINUX_O_RDWR);
81 if (fd < 0)
82 goto glass_console;
83 infd = outfd = fd;
84
85 /* set speed */
86 linux_tcgetattr(fd, &termios);
87 if (linux_cfsetspeed(&termios, speed) < 0) {
88 speed = 9600;
89 if (linux_cfsetspeed(&termios, speed) < 0)
90 goto glass_console;
91 }
92 if (linux_tcsetattr(fd, LINUX_TCSETS, &termios) < 0)
93 goto glass_console;
94
95 snprintf(bi_cons.devname, sizeof(bi_cons.devname), "com%d",
96 iodev - CONSDEV_COM0);
97 bi_cons.addr = -1;
98 bi_cons.speed = speed;
99 }
100 BI_ADD(&bi_cons, BTINFO_CONSDEV, sizeof(bi_cons));
101 }
102
103 void
putchar(int c)104 putchar(int c)
105 {
106
107 common_putc(outfd, c);
108 }
109
110 int
getchar(void)111 getchar(void)
112 {
113
114 return common_getc(infd, 1);
115 }
116
117 static void
common_putc(int fd,int c)118 common_putc(int fd, int c)
119 {
120
121 (void)uwrite(fd, &c, 1);
122 }
123
124 static int
common_getc(int fd,int timo)125 common_getc(int fd, int timo)
126 {
127 struct linux_timeval tv;
128 fd_set fdset;
129 int nfds, n;
130 char c;
131
132 for (; timo < 0 || timo > 0; --timo) {
133 tv.tv_sec = 1;
134 tv.tv_usec = 0;
135 FD_ZERO(&fdset);
136
137 nfds = 1;
138 FD_SET(fd, &fdset);
139
140 n = uselect(nfds, &fdset, NULL, NULL, &tv);
141 if (n > 0)
142 break;
143 }
144
145 if (timo > 0) {
146 for (fd = 0; fd < nfds; fd++) {
147 if (FD_ISSET(fd, &fdset)) {
148 return (uread(fd, &c, 1) < 1 ? -1 : c);
149 }
150 }
151 }
152 return -1;
153 }
154
155 int
awaitkey(int timeout,int tell)156 awaitkey(int timeout, int tell)
157 {
158 struct linux_termios orig_termios, raw_termios;
159 int c = 0;
160 int i;
161
162 /* set raw mode */
163 linux_tcgetattr(infd, &orig_termios);
164 raw_termios = orig_termios;
165 linux_cfmakeraw(&raw_termios);
166 linux_tcsetattr(infd, LINUX_TCSETS, &raw_termios);
167
168 for (i = timeout; i > 0; i--) {
169 if (tell) {
170 char numbuf[20];
171 int len, j;
172
173 len = snprintf(numbuf, sizeof(numbuf), "%d ", i);
174 for (j = 0; j < len; j++)
175 numbuf[len + j] = '\b';
176 numbuf[len + j] = '\0';
177 printf("%s", numbuf);
178 }
179 c = common_getc(infd, 1);
180 if (c == 0)
181 c = -1;
182 if (c >= 0)
183 break;
184 }
185 if (i == 0)
186 c = '\0';
187
188 /* set original mode */
189 linux_tcsetattr(infd, LINUX_TCSETS, &orig_termios);
190
191 if (tell)
192 printf("0 \n");
193
194 return c;
195 }
196
197 void dummycall2(void);
198 void
dummycall2(void)199 dummycall2(void)
200 {
201
202 (void)linux_termio_to_bsd_termios;
203 (void)bsd_termios_to_linux_termio;
204 (void)linux_termios_to_bsd_termios;
205 (void)bsd_termios_to_linux_termios;
206 }
207