sys/arch/ia64/stand/efi/libefi/efi_console.c

   1 /*      $NetBSD: efi_console.c,v 1.3 2009/03/18 10:22:31 cegger Exp $   */
   2
   3 /*-
   4  * Copyright (c) 2000 Doug Rabson
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 /* __FBSDID("$FreeBSD: src/sys/boot/efi/libefi/efi_console.c,v 1.5 2004/03/09 04:00:33 marcel Exp $"); */
  31
  32 #include <efi.h>
  33 #include <efilib.h>
  34 #include <lib/libsa/stand.h>
  35 #include <lib/libsa/loadfile.h>
  36
  37 #include "bootstrap.h"
  38
  39 static SIMPLE_TEXT_OUTPUT_INTERFACE     *conout;
  40 static SIMPLE_INPUT_INTERFACE           *conin;
  41
  42 static void
  43 efi_cons_probe(struct console *cp)
  44 {
  45         conout = ST->ConOut;
  46         conin = ST->ConIn;
  47         cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
  48 }
  49
  50 static int
  51 efi_cons_init(int arg)
  52 {
  53         conout->SetAttribute(conout, EFI_TEXT_ATTR(EFI_LIGHTGRAY, EFI_BLACK));
  54         return 0;
  55 }
  56
  57 void
  58 efi_cons_putchar(int c)
  59 {
  60         CHAR16 buf[2];
  61
  62         if (c == '\n')
  63                 efi_cons_putchar('\r');
  64
  65         buf[0] = c;
  66         buf[1] = 0;
  67
  68         conout->OutputString(conout, buf);
  69 }
  70
  71 int
  72 efi_cons_getchar(void)
  73 {
  74         EFI_INPUT_KEY key;
  75         EFI_STATUS status;
  76         UINTN junk;
  77
  78         /* Try to read a key stroke. We wait for one if none is pending. */
  79         status = conin->ReadKeyStroke(conin, &key);
  80         if (status == EFI_NOT_READY) {
  81                 BS->WaitForEvent(1, &conin->WaitForKey, &junk);
  82                 status = conin->ReadKeyStroke(conin, &key);
  83         }
  84         return (key.UnicodeChar);
  85 }
  86
  87 int
  88 efi_cons_poll(void)
  89 {
  90         /* This can clear the signaled state. */
  91         return (BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS);
  92 }
  93
  94 struct console efi_console = {
  95         "efi",
  96         "EFI console",
  97         0,
  98         efi_cons_probe,
  99         efi_cons_init,
 100         efi_cons_putchar,
 101         efi_cons_getchar,
 102         efi_cons_poll
 103 };