1 /* $NetBSD: boot.c,v 1.12 2016/06/11 06:35:00 dholland 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 #include <next68k/next68k/nextrom.h> 42 43 #define KERN_LOADADDR NEXT_RAMBASE 44 45 extern int errno; 46 47 extern char *mg; 48 #define MON(type, off) (*(type *)((u_int) (mg) + off)) 49 50 int devparse(const char *, int *, char *, char *, char *, char **); 51 52 /* the PROM overwrites MG_boot_arg :-( */ 53 /* #define PROCESS_ARGS */ 54 55 /* 56 * Boot device is derived from PROM provided information. 57 */ 58 59 extern char bootprog_rev[]; 60 extern char bootprog_name[]; 61 extern int build; 62 #define KNAMEN 100 63 char kernel[KNAMEN]; 64 int entry_point; /* return value filled in by machdep_start */ 65 int turbo; 66 67 extern void rtc_init(void); 68 69 extern int try_bootp; 70 71 volatile int qq; 72 73 int 74 main(char *boot_arg) 75 { 76 int fd; 77 u_long marks[MARK_MAX]; 78 int dev; 79 char count, lun, part; 80 char machine; 81 char *file; 82 #ifdef PROCESS_ARGS 83 char *kernel_args = MON(char *, MG_boot_dev); 84 #endif 85 86 machine = MON(char, MG_machine_type); 87 if (machine == NeXT_TURBO_MONO || machine == NeXT_TURBO_COLOR) 88 turbo = 1; 89 else 90 turbo = 0; 91 92 memset(marks, 0, sizeof(marks)); 93 printf(">> %s BOOT [%s #%d]\n", bootprog_name, bootprog_rev, build); 94 printf(">> type %d, %sturbo\n", machine, turbo ? "" : "non-"); 95 rtc_init(); 96 97 try_bootp = 1; 98 99 #if 0 100 { 101 int i; 102 int *p = (int *)mg; 103 for (i = 0; i <= 896; ) { 104 printf ("%d: %x %x %x %x %x %x %x %x\n", i, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); 105 p = &p[8]; 106 i += 8*4; 107 } 108 } 109 printf("Press return to continue.\n"); 110 getchar(); 111 #endif 112 113 strcpy(kernel, boot_arg); 114 entry_point = 0; 115 116 for (;;) { 117 marks[MARK_START] = (u_long)KERN_LOADADDR; 118 fd = loadfile(kernel, marks, LOAD_KERNEL); 119 if (fd != -1) { 120 break; 121 } 122 123 printf("load of %s: %s\n", kernel, strerror(errno)); 124 printf("boot: "); 125 kgets(kernel, sizeof(kernel)); 126 if (kernel[0] == '\0') 127 return 0; 128 129 #ifdef PROCESS_ARGS 130 kernel_args = strchr(kernel, ')'); 131 if (kernel_args == NULL) 132 kernel_args = kernel; 133 kernel_args = strchr(kernel_args, ' '); 134 if (kernel_args) 135 *kernel_args++ = '\0'; 136 #endif 137 } 138 139 dev = 0; 140 count = lun = part = 0; 141 if (devparse(kernel, &dev, &count, &lun, &part, &file) == 0) { 142 char *p = (char *)marks[MARK_END]; 143 strcpy (p, devsw[dev].dv_name); 144 MON(char *, MG_boot_dev) = p; 145 p += strlen (p) + 1; 146 snprintf (p, 1024, "(%d,%d,%d)", count, lun, part); /* XXX */ 147 MON(char *, MG_boot_info) = p; 148 p += strlen (p) + 1; 149 snprintf (p, 1024, "%s", file); /* XXX */ 150 MON(char *, MG_boot_file) = p; 151 #ifdef PROCESS_ARGS 152 p += strlen (p) + 1; 153 if (kernel_args) 154 strcpy (p, kernel_args); 155 else 156 *p = 0; 157 MON(char *, MG_boot_arg) = p; 158 #endif 159 } 160 161 *((u_long *)KERN_LOADADDR) = marks[MARK_END] - KERN_LOADADDR; 162 printf("entry 0x%lx esym 0x%lx\n", 163 marks[MARK_ENTRY], marks[MARK_END] - KERN_LOADADDR); 164 return marks[MARK_ENTRY]; 165 } 166