freebsd-skq/sys/boot/efi/libefi/efi_console.c
marcel 4c2f4222e3 Reset the text attributes when initializing the console. The EFI
loader typically doesn't do this so that we end up booting the
with whatever the EFI loader has set it to last.
2004-03-09 04:00:33 +00:00

100 lines
2.5 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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)
{
conout->SetAttribute(conout, EFI_TEXT_ATTR(EFI_LIGHTGRAY, EFI_BLACK));
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;
EFI_STATUS status;
UINTN junk;
/* Try to read a key stroke. We wait for one if none is pending. */
status = conin->ReadKeyStroke(conin, &key);
if (status == EFI_NOT_READY) {
BS->WaitForEvent(1, &conin->WaitForKey, &junk);
status = conin->ReadKeyStroke(conin, &key);
}
return (key.UnicodeChar);
}
int
efi_cons_poll()
{
/* This can clear the signaled state. */
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
};