Fully synchronize sys/boot from FreeBSD-5.x, but add / to the module path
[dragonfly.git] / sys / boot / efi / libefi / efi_console.c
CommitLineData
5ee58eed
MD
1/*-
2 * Copyright (c) 2000 Doug Rabson
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 * $DragonFly: src/sys/boot/efi/libefi/efi_console.c,v 1.1 2003/11/10 06:08:33 dillon Exp $
27 */
28
29#include <efi.h>
30#include <efilib.h>
31
32#include "bootstrap.h"
33
34static SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
35static SIMPLE_INPUT_INTERFACE *conin;
36
37static void
38efi_cons_probe(struct console *cp)
39{
40 conout = ST->ConOut;
41 conin = ST->ConIn;
42 cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
43}
44
45static int
46efi_cons_init(int arg)
47{
48 return 0;
49}
50
51void
52efi_cons_putchar(int c)
53{
54 CHAR16 buf[2];
55
56 if (c == '\n')
57 efi_cons_putchar('\r');
58
59 buf[0] = c;
60 buf[1] = 0;
61
62 conout->OutputString(conout, buf);
63}
64
65int
66efi_cons_getchar()
67{
68 EFI_INPUT_KEY key;
69 EFI_STATUS status;
70 UINTN junk;
71
72 /* Try to read a key stroke. We wait for one if none is pending. */
73 status = conin->ReadKeyStroke(conin, &key);
74 if (status == EFI_NOT_READY) {
75 BS->WaitForEvent(1, &conin->WaitForKey, &junk);
76 status = conin->ReadKeyStroke(conin, &key);
77 }
78 return (key.UnicodeChar);
79}
80
81int
82efi_cons_poll()
83{
84 /* This can clear the signaled state. */
85 return (BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS);
86}
87
88struct console efi_console = {
89 "efi",
90 "EFI console",
91 0,
92 efi_cons_probe,
93 efi_cons_init,
94 efi_cons_putchar,
95 efi_cons_getchar,
96 efi_cons_poll
97};