1 /*-
2 * Copyright (c) 2011 Google, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <stand.h>
28 #include <sys/font.h>
29 #include "bootstrap.h"
30 #include "libuserboot.h"
31
32 int console;
33
34 static struct console *userboot_comconsp;
35
36 static void userboot_cons_probe(struct console *cp);
37 static int userboot_cons_init(int);
38 static void userboot_comcons_probe(struct console *cp);
39 static int userboot_comcons_init(int);
40 static void userboot_cons_putchar(int);
41 static int userboot_cons_getchar(void);
42 static int userboot_cons_poll(void);
43
44 struct console userboot_console = {
45 .c_name = "userboot",
46 .c_desc = "userboot",
47 .c_probe = userboot_cons_probe,
48 .c_init = userboot_cons_init,
49 .c_out = userboot_cons_putchar,
50 .c_in = userboot_cons_getchar,
51 .c_ready = userboot_cons_poll,
52 };
53
54 /*
55 * Provide a simple alias to allow loader scripts to set the
56 * console to comconsole without resulting in an error
57 */
58 struct console userboot_comconsole = {
59 .c_name = "comconsole",
60 .c_desc = "comconsole",
61 .c_probe = userboot_comcons_probe,
62 .c_init = userboot_comcons_init,
63 .c_out = userboot_cons_putchar,
64 .c_in = userboot_cons_getchar,
65 .c_ready = userboot_cons_poll,
66 };
67
68 static void
userboot_cons_probe(struct console * cp)69 userboot_cons_probe(struct console *cp)
70 {
71
72 cp->c_flags |= (C_PRESENTIN | C_PRESENTOUT);
73 }
74
75 static int
userboot_cons_init(int arg)76 userboot_cons_init(int arg)
77 {
78
79 return (0);
80 }
81
82 static void
userboot_comcons_probe(struct console * cp)83 userboot_comcons_probe(struct console *cp)
84 {
85
86 /*
87 * Save the console pointer so the comcons_init routine
88 * can set the C_PRESENT* flags. They are not set
89 * here to allow the existing userboot console to
90 * be elected the default.
91 */
92 userboot_comconsp = cp;
93 }
94
95 static int
userboot_comcons_init(int arg)96 userboot_comcons_init(int arg)
97 {
98
99 /*
100 * Set the C_PRESENT* flags to allow the comconsole
101 * to be selected as the active console
102 */
103 userboot_comconsp->c_flags |= (C_PRESENTIN | C_PRESENTOUT);
104 return (0);
105 }
106
107 static void
userboot_cons_putchar(int c)108 userboot_cons_putchar(int c)
109 {
110
111 CALLBACK(putc, c);
112 }
113
114 static int
userboot_cons_getchar()115 userboot_cons_getchar()
116 {
117
118 return (CALLBACK(getc));
119 }
120
121 static int
userboot_cons_poll()122 userboot_cons_poll()
123 {
124
125 return (CALLBACK(poll));
126 }
127