1/*- 2 * Copyright (c) 2011 Google, Inc. 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 <stand.h> 28#include <sys/font.h> 29#include "bootstrap.h" 30#include "libuserboot.h" 31 32int console; 33 34static struct console *userboot_comconsp; 35 36static void userboot_cons_probe(struct console *cp); 37static int userboot_cons_init(int); 38static void userboot_comcons_probe(struct console *cp); 39static int userboot_comcons_init(int); 40static void userboot_cons_putchar(int); 41static int userboot_cons_getchar(void); 42static int userboot_cons_poll(void); 43 44struct console userboot_console = { 45 .c_name = "userboot", 46 .c_desc = "userboot", 47 .c_probe = userboot_cons_probe, 48 .c_init = userboot_cons_init, 49 .c_out = userboot_cons_putchar, 50 .c_in = userboot_cons_getchar, 51 .c_ready = userboot_cons_poll, 52}; 53 54/* 55 * Provide a simple alias to allow loader scripts to set the 56 * console to comconsole without resulting in an error 57 */ 58struct console userboot_comconsole = { 59 .c_name = "comconsole", 60 .c_desc = "comconsole", 61 .c_probe = userboot_comcons_probe, 62 .c_init = userboot_comcons_init, 63 .c_out = userboot_cons_putchar, 64 .c_in = userboot_cons_getchar, 65 .c_ready = userboot_cons_poll, 66}; 67 68static void 69userboot_cons_probe(struct console *cp) 70{ 71 72 cp->c_flags |= (C_PRESENTIN | C_PRESENTOUT); 73} 74 75static int 76userboot_cons_init(int arg) 77{ 78 79 return (0); 80} 81 82static void 83userboot_comcons_probe(struct console *cp) 84{ 85 86 /* 87 * Save the console pointer so the comcons_init routine 88 * can set the C_PRESENT* flags. They are not set 89 * here to allow the existing userboot console to 90 * be elected the default. 91 */ 92 userboot_comconsp = cp; 93} 94 95static int 96userboot_comcons_init(int arg) 97{ 98 99 /* 100 * Set the C_PRESENT* flags to allow the comconsole 101 * to be selected as the active console 102 */ 103 userboot_comconsp->c_flags |= (C_PRESENTIN | C_PRESENTOUT); 104 return (0); 105} 106 107static void 108userboot_cons_putchar(int c) 109{ 110 111 CALLBACK(putc, c); 112} 113 114static int 115userboot_cons_getchar() 116{ 117 118 return (CALLBACK(getc)); 119} 120 121static int 122userboot_cons_poll() 123{ 124 125 return (CALLBACK(poll)); 126} 127