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freebsd/sys/boot/efi/libefi/efi_console.c
2001-06-16 05:56:13 +00:00

95 lines
2.3 KiB
C

/*-
* Copyright (c) 2000 Doug Rabson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <efi.h>
#include <efilib.h>
#include "bootstrap.h"
static SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
static SIMPLE_INPUT_INTERFACE *conin;
static void
efi_cons_probe(struct console *cp)
{
conout = ST->ConOut;
conin = ST->ConIn;
cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
}
static int
efi_cons_init(int arg)
{
return 0;
}
void
efi_cons_putchar(int c)
{
CHAR16 buf[2];
if (c == '\n')
efi_cons_putchar('\r');
buf[0] = c;
buf[1] = 0;
conout->OutputString(conout, buf);
}
int
efi_cons_getchar()
{
EFI_INPUT_KEY key;
UINTN junk;
BS->WaitForEvent(1, &conin->WaitForKey, &junk);
conin->ReadKeyStroke(conin, &key);
return key.UnicodeChar;
}
int
efi_cons_poll()
{
return BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS;
}
struct console efi_console = {
"efi",
"EFI console",
0,
efi_cons_probe,
efi_cons_init,
efi_cons_putchar,
efi_cons_getchar,
efi_cons_poll
};