1 /* $NetBSD: boot.c,v 1.4 2001/05/12 22:35:30 chs Exp $ */ 2 /* 3 * Copyright (c) 1994 Rolf Grossmann 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Rolf Grossmann. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/reboot.h> 34 35 #include <lib/libsa/stand.h> 36 #include <lib/libsa/loadfile.h> 37 #include <lib/libkern/libkern.h> 38 39 #include <machine/cpu.h> /* for NEXT_RAMBASE */ 40 41 #define KERN_LOADADDR NEXT_RAMBASE 42 43 extern int errno; 44 45 /* 46 * Boot device is derived from PROM provided information. 47 */ 48 49 extern char bootprog_rev[]; 50 extern char bootprog_name[]; 51 extern int build; 52 #define KNAMEN 100 53 char kernel[KNAMEN]; 54 int entry_point; /* return value filled in by machdep_start */ 55 56 extern void rtc_init(void); 57 58 extern int try_bootp; 59 60 volatile int qq; 61 62 int 63 main(char *boot_arg) 64 { 65 int fd; 66 u_long marks[MARK_MAX]; 67 68 memset(marks, 0, sizeof(marks)); 69 printf(">> %s BOOT [%s #%d]\n", bootprog_name, bootprog_rev, build); 70 rtc_init(); 71 72 try_bootp = 1; 73 74 #if 0 75 printf("Press return to continue.\n"); 76 getchar(); 77 #endif 78 79 strcpy(kernel, boot_arg); 80 entry_point = NULL; 81 82 for (;;) { 83 marks[MARK_START] = (u_long)KERN_LOADADDR; 84 fd = loadfile(kernel, marks, LOAD_KERNEL); 85 if (fd != -1) { 86 break; 87 } 88 89 printf("load of %s: %s\n", kernel, strerror(errno)); 90 printf("boot: "); 91 gets(kernel); 92 /* XXX we have to write this back into boot_arg or even mg->boot* */ 93 if (kernel[0] == '\0') 94 return NULL; 95 } 96 97 *((u_long *)KERN_LOADADDR) = marks[MARK_END] - KERN_LOADADDR; 98 printf("entry 0x%lx esym 0x%lx\n", 99 marks[MARK_ENTRY], marks[MARK_END] - KERN_LOADADDR); 100 return marks[MARK_ENTRY]; 101 } 102