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
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <efi.h>
31#include <efilib.h>
32
33#include "bootstrap.h"
34
35static SIMPLE_TEXT_OUTPUT_INTERFACE	*conout;
36static SIMPLE_INPUT_INTERFACE		*conin;
37
38static void
39efi_cons_probe(struct console *cp)
40{
41	conout = ST->ConOut;
42	conin = ST->ConIn;
43	cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
44}
45
46static int
47efi_cons_init(int arg)
48{
49	conout->SetAttribute(conout, EFI_TEXT_ATTR(EFI_LIGHTGRAY, EFI_BLACK));
50	return 0;
51}
52
53void
54efi_cons_putchar(int c)
55{
56	CHAR16 buf[2];
57
58	if (c == '\n')
59		efi_cons_putchar('\r');
60
61	buf[0] = c;
62	buf[1] = 0;
63
64	conout->OutputString(conout, buf);
65}
66
67int
68efi_cons_getchar()
69{
70	EFI_INPUT_KEY key;
71	EFI_STATUS status;
72	UINTN junk;
73
74	/* Try to read a key stroke. We wait for one if none is pending. */
75	status = conin->ReadKeyStroke(conin, &key);
76	if (status == EFI_NOT_READY) {
77		BS->WaitForEvent(1, &conin->WaitForKey, &junk);
78		status = conin->ReadKeyStroke(conin, &key);
79	}
80	return (key.UnicodeChar);
81}
82
83int
84efi_cons_poll()
85{
86	/* This can clear the signaled state. */
87	return (BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS);
88}
89
90struct console efi_console = {
91	"efi",
92	"EFI console",
93	0,
94	efi_cons_probe,
95	efi_cons_init,
96	efi_cons_putchar,
97	efi_cons_getchar,
98	efi_cons_poll
99};
100