99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*-
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* Copyright (c) 2000 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <efi.h>
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#include <efilib.h>
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#include "bootstrap.h"
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static SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
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static SIMPLE_INPUT_INTERFACE *conin;
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static void
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efi_cons_probe(struct console *cp)
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{
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conout = ST->ConOut;
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conin = ST->ConIn;
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cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
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}
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static int
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efi_cons_init(int arg)
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{
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return 0;
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}
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void
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efi_cons_putchar(int c)
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{
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CHAR16 buf[2];
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if (c == '\n')
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efi_cons_putchar('\r');
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buf[0] = c;
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buf[1] = 0;
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conout->OutputString(conout, buf);
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}
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int
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efi_cons_getchar()
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{
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EFI_INPUT_KEY key;
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EFI_STATUS status;
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UINTN junk;
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/* Try to read a key stroke. We wait for one if none is pending. */
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status = conin->ReadKeyStroke(conin, &key);
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if (status == EFI_NOT_READY) {
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BS->WaitForEvent(1, &conin->WaitForKey, &junk);
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status = conin->ReadKeyStroke(conin, &key);
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}
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return (key.UnicodeChar);
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}
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int
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efi_cons_poll()
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{
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/* This can clear the signaled state. */
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return (BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS);
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}
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struct console efi_console = {
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"efi",
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"EFI console",
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0,
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efi_cons_probe,
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efi_cons_init,
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efi_cons_putchar,
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efi_cons_getchar,
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efi_cons_poll
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};
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