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 <sys/cdefs.h>
39__FBSDID("$FreeBSD: stable/11/stand/i386/libi386/spinconsole.c 329114 2018-02-11 02:27:50Z kevans $");
40
41#include <stand.h>
42#include <bootstrap.h>
43
44static void	spinc_probe(struct console *cp);
45static int	spinc_init(int arg);
46static void	spinc_putchar(int c);
47static int	spinc_getchar(void);
48static int	spinc_ischar(void);
49
50extern struct console *consoles[];
51
52struct 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
63static struct console *parent = NULL;
64
65static void
66spinc_probe(struct console *cp)
67{
68
69	if (parent == NULL)
70		parent = consoles[0];
71	parent->c_probe(cp);
72}
73
74static int
75spinc_init(int arg)
76{
77
78	return(parent->c_init(arg));
79}
80
81static void
82spinc_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
100static int
101spinc_getchar(void)
102{
103
104	return(-1);
105}
106
107static int
108spinc_ischar(void)
109{
110
111	return(0);
112}
113