1 /* $NetBSD: efi_console.c,v 1.2 2006/04/22 07:58:53 cherry 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 36 #include "bootstrap.h" 37 38 static SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 39 static SIMPLE_INPUT_INTERFACE *conin; 40 41 static void 42 efi_cons_probe(struct console *cp) 43 { 44 conout = ST->ConOut; 45 conin = ST->ConIn; 46 cp->c_flags |= C_PRESENTIN | C_PRESENTOUT; 47 } 48 49 static int 50 efi_cons_init(int arg) 51 { 52 conout->SetAttribute(conout, EFI_TEXT_ATTR(EFI_LIGHTGRAY, EFI_BLACK)); 53 return 0; 54 } 55 56 void 57 efi_cons_putchar(int c) 58 { 59 CHAR16 buf[2]; 60 61 if (c == '\n') 62 efi_cons_putchar('\r'); 63 64 buf[0] = c; 65 buf[1] = 0; 66 67 conout->OutputString(conout, buf); 68 } 69 70 int 71 efi_cons_getchar() 72 { 73 EFI_INPUT_KEY key; 74 EFI_STATUS status; 75 UINTN junk; 76 77 /* Try to read a key stroke. We wait for one if none is pending. */ 78 status = conin->ReadKeyStroke(conin, &key); 79 if (status == EFI_NOT_READY) { 80 BS->WaitForEvent(1, &conin->WaitForKey, &junk); 81 status = conin->ReadKeyStroke(conin, &key); 82 } 83 return (key.UnicodeChar); 84 } 85 86 int 87 efi_cons_poll() 88 { 89 /* This can clear the signaled state. */ 90 return (BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS); 91 } 92 93 struct console efi_console = { 94 "efi", 95 "EFI console", 96 0, 97 efi_cons_probe, 98 efi_cons_init, 99 efi_cons_putchar, 100 efi_cons_getchar, 101 efi_cons_poll 102 }; 103