1 /* $NetBSD: console.c,v 1.4 2019/04/03 19:14:25 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 2017 The NetBSD Foundation, Inc. All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Maxime Villard. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "prekern.h" 32 33 extern vaddr_t atdevbase; 34 #define CONS_WID 80 35 #define CONS_HEI 25 36 37 static char *cons_start; 38 static size_t cons_x, cons_y; 39 static char cons_buffer[CONS_WID * 2 * CONS_HEI]; 40 41 void init_cons(void) 42 { 43 cons_start = (char *)atdevbase + (0xB8000 - IOM_BEGIN); 44 cons_x = 0; 45 cons_y = 0; 46 } 47 48 static void check_scroll(void) 49 { 50 char *src, *dst; 51 size_t i; 52 53 if (cons_y != CONS_HEI) 54 return; 55 56 for (i = 0; i < CONS_HEI-1; i++) { 57 dst = &cons_buffer[0] + i * (CONS_WID * 2); 58 src = &cons_buffer[0] + (i + 1) * (CONS_WID * 2); 59 memcpy(dst, src, (CONS_WID * 2)); 60 } 61 memset(&cons_buffer[0] + (CONS_WID * 2) * (CONS_HEI-1), 0, 62 (CONS_WID * 2)); 63 cons_y--; 64 memcpy(cons_start, &cons_buffer[0], CONS_WID * 2 * CONS_HEI); 65 } 66 67 void print_ext(int color, char *buf) 68 { 69 char *ptr, *scr; 70 size_t i; 71 72 for (i = 0; buf[i] != '\0'; i++) { 73 if (buf[i] == '\n') { 74 cons_x = 0; 75 cons_y++; 76 check_scroll(); 77 } else { 78 if (cons_x + 1 == CONS_WID) { 79 cons_x = 0; 80 cons_y++; 81 check_scroll(); 82 } 83 ptr = (cons_start + 2 * cons_x + 160 * cons_y); 84 scr = (cons_buffer + 2 * cons_x + 160 * cons_y); 85 ptr[0] = scr[0] = buf[i]; 86 ptr[1] = scr[1] = color; 87 cons_x++; 88 } 89 } 90 } 91 92 void print(char *buf) 93 { 94 print_ext(WHITE_ON_BLACK, buf); 95 } 96 97 void print_state(bool ok, char *buf) 98 { 99 print("["); 100 if (ok) 101 print_ext(GREEN_ON_BLACK, "+"); 102 else 103 print_ext(RED_ON_BLACK, "!"); 104 print("] "); 105 print(buf); 106 print("\n"); 107 } 108 109 void print_banner(void) 110 { 111 char *banner = 112 " __________ __ \n" 113 " \\______ \\_______ ____ | | __ ___________ ____ \n" 114 " | ___/\\_ __ \\_/ __ \\| |/ // __ \\_ __ \\/ \\ \n" 115 " | | | | \\/\\ ___/| <\\ ___/| | \\/ | \\\n" 116 " |____| |__| \\___ >__|_ \\\\___ >__| |___| /\n" 117 " \\/ \\/ \\/ \\/ Version 1.0\n" 118 ; 119 print(banner); 120 } 121