1 /* $NetBSD: boot.c,v 1.15 2023/02/12 10:04:56 tsutsui 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/libsa/dev_net.h> 38 #include <lib/libkern/libkern.h> 39 40 #include <machine/cpu.h> /* for NEXT_RAMBASE */ 41 42 #include <next68k/next68k/nextrom.h> 43 44 #include "samachdep.h" 45 46 #define KERN_LOADADDR NEXT_RAMBASE 47 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 #define KNAMEN 100 60 char kernel[KNAMEN]; 61 int entry_point; /* return value filled in by machdep_start */ 62 int cpuspeed = MHZ_33; /* assume fastest 33 MHz for sanity */ 63 int turbo; 64 65 volatile int qq; 66 67 int 68 main(char *boot_arg) 69 { 70 int fd; 71 u_long marks[MARK_MAX]; 72 int dev; 73 char count, lun, part; 74 char machine; 75 char *file; 76 #ifdef PROCESS_ARGS 77 char *kernel_args = MON(char *, MG_boot_dev); 78 #endif 79 80 machine = MON(char, MG_machine_type); 81 if (machine == NeXT_TURBO_MONO || 82 machine == NeXT_TURBO_COLOR || 83 machine == NeXT_CUBE_TURBO) { 84 turbo = 1; 85 cpuspeed = MHZ_33; 86 } else { 87 turbo = 0; 88 cpuspeed = MHZ_25; 89 } 90 91 memset(marks, 0, sizeof(marks)); 92 printf(">> %s BOOT [%s #%d]\n", bootprog_name, bootprog_rev, build); 93 printf(">> type %d, %sturbo\n", machine, turbo ? "" : "non-"); 94 rtc_init(); 95 96 try_bootp = 1; 97 98 #if 0 99 { 100 int i; 101 int *p = (int *)mg; 102 for (i = 0; i <= 896; ) { 103 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]); 104 p = &p[8]; 105 i += 8*4; 106 } 107 } 108 printf("Press return to continue.\n"); 109 getchar(); 110 #endif 111 112 strcpy(kernel, boot_arg); 113 entry_point = 0; 114 115 for (;;) { 116 marks[MARK_START] = (u_long)KERN_LOADADDR; 117 fd = loadfile(kernel, marks, LOAD_KERNEL); 118 if (fd != -1) { 119 break; 120 } 121 122 printf("load of %s: %s\n", kernel, strerror(errno)); 123 printf("boot: "); 124 kgets(kernel, sizeof(kernel)); 125 if (kernel[0] == '\0') 126 return 0; 127 128 #ifdef PROCESS_ARGS 129 kernel_args = strchr(kernel, ')'); 130 if (kernel_args == NULL) 131 kernel_args = kernel; 132 kernel_args = strchr(kernel_args, ' '); 133 if (kernel_args) 134 *kernel_args++ = '\0'; 135 #endif 136 } 137 138 dev = 0; 139 count = lun = part = 0; 140 if (devparse(kernel, &dev, &count, &lun, &part, &file) == 0) { 141 char *p = (char *)marks[MARK_END]; 142 strcpy (p, devsw[dev].dv_name); 143 MON(char *, MG_boot_dev) = p; 144 p += strlen (p) + 1; 145 snprintf (p, 1024, "(%d,%d,%d)", count, lun, part); /* XXX */ 146 MON(char *, MG_boot_info) = p; 147 p += strlen (p) + 1; 148 snprintf (p, 1024, "%s", file); /* XXX */ 149 MON(char *, MG_boot_file) = p; 150 #ifdef PROCESS_ARGS 151 p += strlen (p) + 1; 152 if (kernel_args) 153 strcpy (p, kernel_args); 154 else 155 *p = 0; 156 MON(char *, MG_boot_arg) = p; 157 #endif 158 } 159 160 *((u_long *)KERN_LOADADDR) = marks[MARK_END] - KERN_LOADADDR; 161 printf("entry 0x%lx esym 0x%lx\n", 162 marks[MARK_ENTRY], marks[MARK_END] - KERN_LOADADDR); 163 return marks[MARK_ENTRY]; 164 } 165