1 /* $NetBSD: boot.c,v 1.6 2009/01/12 07:01:00 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)boot.c 8.1 (Berkeley) 6/10/93 32 */ 33 34 #include <sys/param.h> 35 #include <sys/reboot.h> 36 #include <machine/mon.h> 37 38 #include <stand.h> 39 #include <loadfile.h> 40 #include "libsa.h" 41 42 /* 43 * Default the name (really tape segment number). 44 * The defaults assume the following tape layout: 45 * segment 0: tapeboot 46 * segment 1: netbsd.sun3 (RAMDISK3) 47 * segment 2: netbsd.sun3x (RAMDISK3X) 48 * segment 3: miniroot image 49 * segment 4: netbsd.sun2 (RAMDISK) 50 * Therefore, the default name is "1" or "2" or "4" 51 * for sun3, sun3x, and sun2, respectively. 52 */ 53 54 char defname[32] = "1"; 55 char line[80]; 56 57 int 58 main(void) 59 { 60 char *cp, *file; 61 void *entry; 62 u_long marks[MARK_MAX]; 63 u_long mark_start; 64 int fd; 65 66 printf(">> %s tapeboot [%s]\n", bootprog_name, bootprog_rev); 67 prom_get_boot_info(); 68 69 /* 70 * Can not hold open the tape device as is done 71 * in the other boot programs because it does 72 * its position-to-segment on open. 73 */ 74 75 /* Assume the Sun3/Sun3x load start. */ 76 memset(marks, 0, sizeof(marks)); 77 mark_start = 0; 78 79 /* If running on a Sun3X, use segment 2. */ 80 if (_is3x) 81 defname[0] = '2'; 82 83 /* 84 * If running on a Sun2, use segment 4 and 85 * do the special MMU setup. 86 */ 87 else if (_is2) { 88 defname[0] = '4'; 89 mark_start = sun2_map_mem_load(); 90 } 91 92 file = defname; 93 94 cp = prom_bootfile; 95 if (cp && *cp) 96 file = cp; 97 98 for (;;) { 99 if (prom_boothow & RB_ASKNAME) { 100 printf("tapeboot: segment? [%s]: ", defname); 101 gets(line); 102 if (line[0]) 103 file = line; 104 else 105 file = defname; 106 } else 107 printf("tapeboot: loading segment %s\n", file); 108 109 marks[MARK_START] = mark_start; 110 if ((fd = loadfile(file, marks, LOAD_KERNEL)) != -1) { 111 break; 112 } 113 printf("tapeboot: segment %s: %s\n", file, strerror(errno)); 114 prom_boothow |= RB_ASKNAME; 115 } 116 close(fd); 117 118 entry = (void *)marks[MARK_ENTRY]; 119 if (_is2) { 120 printf("relocating program..."); 121 entry = sun2_map_mem_run(entry); 122 } 123 printf("Starting program at 0x%x\n", (u_int)entry); 124 chain_to(entry); 125 126 return 0; 127 } 128