1 /*-
2 * spinconsole.c
3 *
4 * Author: Maksym Sobolyev <[email protected]>
5 * Copyright (c) 2009 Sippy Software, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 * copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 * Communications, Inc. trademarks, including the mark "WHISTLE
16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 * such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 */
37
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
40
41 #include <stand.h>
42 #include <bootstrap.h>
43
44 static void spinc_probe(struct console *cp);
45 static int spinc_init(int arg);
46 static void spinc_putchar(int c);
47 static int spinc_getchar(void);
48 static int spinc_ischar(void);
49
50 extern struct console *consoles[];
51
52 struct console spinconsole = {
53 "spinconsole",
54 "spin port",
55 0,
56 spinc_probe,
57 spinc_init,
58 spinc_putchar,
59 spinc_getchar,
60 spinc_ischar
61 };
62
63 static struct console *parent = NULL;
64
65 static void
spinc_probe(struct console * cp)66 spinc_probe(struct console *cp)
67 {
68
69 if (parent == NULL)
70 parent = consoles[0];
71 parent->c_probe(cp);
72 }
73
74 static int
spinc_init(int arg)75 spinc_init(int arg)
76 {
77
78 return(parent->c_init(arg));
79 }
80
81 static void
spinc_putchar(int c)82 spinc_putchar(int c)
83 {
84 static unsigned tw_chars = 0x5C2D2F7C; /* "\-/|" */
85 static time_t lasttime = 0;
86 time_t now;
87
88 now = time(0);
89 if (now < (lasttime + 1))
90 return;
91 #ifdef TERM_EMU
92 if (lasttime > 0)
93 parent->c_out('\b');
94 #endif
95 lasttime = now;
96 parent->c_out((char)tw_chars);
97 tw_chars = (tw_chars >> 8) | ((tw_chars & (unsigned long)0xFF) << 24);
98 }
99
100 static int
spinc_getchar(void)101 spinc_getchar(void)
102 {
103
104 return(-1);
105 }
106
107 static int
spinc_ischar(void)108 spinc_ischar(void)
109 {
110
111 return(0);
112 }
113