1 /*- 2 * Copyright (c) 1982, 1986, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)boot.c 8.1 (Berkeley) 06/10/93 8 */ 9 10 #include <sys/param.h> 11 #include <sys/reboot.h> 12 #include <a.out.h> 13 #include <stand.att/saio.h> 14 15 #ifndef INSECURE 16 #include <sys/stat.h> 17 struct stat sb; 18 #endif 19 20 #define PRTCPU /* print out cpu type */ 21 22 /* 23 * Boot program... bits in `howto' determine whether boot stops to 24 * ask for system name. Boot device is derived from ROM provided 25 * information. 26 */ 27 28 char line[100]; 29 30 extern unsigned opendev; 31 extern char *lowram; 32 extern int noconsole; 33 extern int howto, bootdev; 34 35 #ifdef PRTCPU 36 #include <hp300/stand/samachdep.h> 37 #endif 38 39 main() 40 { 41 register char *cp; 42 int io, retry, type; 43 #ifdef PRTCPU 44 extern int machineid; 45 46 printf("\nHP"); 47 switch (machineid) { 48 case HP_320: 49 cp = "320"; break; 50 case HP_330: 51 cp = "318/319/330"; break; 52 case HP_340: 53 cp = "340"; break; 54 case HP_350: 55 cp = "350"; break; 56 case HP_360: 57 cp = "360"; break; 58 case HP_370: 59 cp = "370"; break; 60 case HP_375: 61 cp = "345/375/400"; break; 62 case HP_380: 63 cp = "380/425"; break; 64 case HP_433: 65 cp = "433"; break; 66 default: 67 cp = "???"; break; 68 } 69 printf("%s CPU\nBoot\n", cp); 70 #else 71 printf("\nBoot\n"); 72 #endif 73 #ifdef JUSTASK 74 howto = RB_ASKNAME|RB_SINGLE; 75 #else 76 if ((howto & RB_ASKNAME) == 0) { 77 type = (bootdev >> B_TYPESHIFT) & B_TYPEMASK; 78 if ((unsigned)type < ndevs && devsw[type].dv_name) 79 strcpy(line, UNIX); 80 else 81 howto |= RB_SINGLE|RB_ASKNAME; 82 } 83 #endif 84 for (retry = 0;;) { 85 if (!noconsole && (howto & RB_ASKNAME)) { 86 printf(": "); 87 gets(line); 88 if (line[0] == 0) { 89 strcpy(line, UNIX); 90 printf(": %s\n", line); 91 } 92 } else 93 printf(": %s\n", line); 94 io = open(line, 0); 95 if (io >= 0) { 96 #ifndef INSECURE 97 (void) fstat(io, &sb); 98 if (sb.st_uid || (sb.st_mode & 2)) { 99 printf("non-secure file, will not load\n"); 100 close(io); 101 howto = RB_SINGLE|RB_ASKNAME; 102 continue; 103 } 104 #endif 105 copyunix(howto, opendev, io); 106 close(io); 107 howto |= RB_SINGLE|RB_ASKNAME; 108 } 109 if (++retry > 2) 110 howto |= RB_SINGLE|RB_ASKNAME; 111 } 112 } 113 114 /*ARGSUSED*/ 115 copyunix(howto, devtype, io) 116 register int howto; /* d7 contains boot flags */ 117 register u_int devtype; /* d6 contains boot device */ 118 register int io; 119 { 120 struct exec x; 121 register int i; 122 register char *load; /* a5 contains load addr for unix */ 123 register char *addr; 124 125 i = read(io, (char *)&x, sizeof(x)); 126 if (i != sizeof(x) || 127 (x.a_magic != OMAGIC && x.a_magic != ZMAGIC && x.a_magic != NMAGIC)) { 128 printf("Bad format\n"); 129 return; 130 } 131 printf("%d", x.a_text); 132 if (x.a_magic == ZMAGIC && lseek(io, 0x400, L_SET) == -1) 133 goto shread; 134 load = addr = lowram; 135 if (read(io, (char *)addr, x.a_text) != x.a_text) 136 goto shread; 137 addr += x.a_text; 138 if (x.a_magic == ZMAGIC || x.a_magic == NMAGIC) 139 while ((int)addr & CLOFSET) 140 *addr++ = 0; 141 printf("+%d", x.a_data); 142 if (read(io, addr, x.a_data) != x.a_data) 143 goto shread; 144 addr += x.a_data; 145 printf("+%d", x.a_bss); 146 x.a_bss += 128*512; /* slop */ 147 for (i = 0; i < x.a_bss; i++) 148 *addr++ = 0; 149 x.a_entry += (int)lowram; 150 printf(" start 0x%x\n", x.a_entry); 151 #ifdef __GNUC__ 152 asm(" movl %0,d7" : : "m" (howto)); 153 asm(" movl %0,d6" : : "m" (devtype)); 154 asm(" movl %0,a5" : : "a" (load)); 155 #endif 156 (*((int (*)()) x.a_entry))(); 157 return; 158 shread: 159 printf("Short read\n"); 160 return; 161 } 162