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