1 /*-
2 * spinconsole.c
3 *
4 * Author: Maksym Sobolyev <sobomax@sippysoft.com>
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 <stand.h>
39 #include <bootstrap.h>
40
41 static void spinc_probe(struct console *cp);
42 static int spinc_init(int arg);
43 static void spinc_putchar(int c);
44 static int spinc_getchar(void);
45 static int spinc_ischar(void);
46
47 extern struct console *consoles[];
48
49 struct console spinconsole = {
50 "spinconsole",
51 "spin port",
52 0,
53 spinc_probe,
54 spinc_init,
55 spinc_putchar,
56 spinc_getchar,
57 spinc_ischar
58 };
59
60 static struct console *parent = NULL;
61
62 static void
spinc_probe(struct console * cp)63 spinc_probe(struct console *cp)
64 {
65
66 if (parent == NULL)
67 parent = consoles[0];
68 parent->c_probe(cp);
69 }
70
71 static int
spinc_init(int arg)72 spinc_init(int arg)
73 {
74
75 return(parent->c_init(arg));
76 }
77
78 static void
spinc_putchar(int c)79 spinc_putchar(int c)
80 {
81 static unsigned tw_chars = 0x5C2D2F7C; /* "\-/|" */
82 static time_t lasttime = 0;
83 time_t now;
84
85 now = time(0);
86 if (now < (lasttime + 1))
87 return;
88 #ifdef TERM_EMU
89 if (lasttime > 0)
90 parent->c_out('\b');
91 #endif
92 lasttime = now;
93 parent->c_out((char)tw_chars);
94 tw_chars = (tw_chars >> 8) | ((tw_chars & (unsigned long)0xFF) << 24);
95 }
96
97 static int
spinc_getchar(void)98 spinc_getchar(void)
99 {
100
101 return(-1);
102 }
103
104 static int
spinc_ischar(void)105 spinc_ischar(void)
106 {
107
108 return(0);
109 }
110