1*11886Sleres /* boot.c 4.9 83/04/08 */ 2315Sbill 3315Sbill #include "../h/param.h" 4315Sbill #include "../h/inode.h" 56069Smckusic #include "../h/fs.h" 6315Sbill #include "../h/vm.h" 7315Sbill #include <a.out.h> 8315Sbill #include "saio.h" 96069Smckusic #include "../h/reboot.h" 10315Sbill 111466Sbill /* 121466Sbill * Boot program... arguments passed in r10 and r11 determine 131466Sbill * whether boot stops to ask for system name and which device 141466Sbill * boot comes from. 151466Sbill */ 16315Sbill 171466Sbill /* Types in r10 specifying major device */ 181466Sbill char devname[][2] = { 191466Sbill 'h','p', /* 0 = hp */ 201466Sbill 0,0, /* 1 = ht */ 211466Sbill 'u','p', /* 2 = up */ 223261Swnj 'h','k', /* 3 = hk */ 234868Sroot 0,0, /* 4 = sw */ 244868Sroot 0,0, /* 5 = tm */ 254868Sroot 0,0, /* 6 = ts */ 264868Sroot 0,0, /* 7 = mt */ 274868Sroot 0,0, /* 8 = tu */ 284868Sroot 'r','a', /* 9 = ra */ 29*11886Sleres 'u','t', /* 10 = ut */ 30*11886Sleres 'r','b', /* 11 = rb */ 311466Sbill }; 321466Sbill 331466Sbill char line[100] = "xx(0,0)vmunix"; 341466Sbill 353347Swnj int retry = 0; 363347Swnj 37315Sbill main() 38315Sbill { 391466Sbill register howto, devtype; /* howto=r11, devtype=r10 */ 403347Swnj int io; 41315Sbill 423274Swnj #ifdef lint 433274Swnj howto = 0; devtype = 0; 443274Swnj #endif 45315Sbill printf("\nBoot\n"); 461575Sbill #ifdef JUSTASK 471593Sbill howto = RB_ASKNAME|RB_SINGLE; 481575Sbill #else 491466Sbill if ((howto&RB_ASKNAME)==0) { 501466Sbill if (devtype>=0 && devtype<sizeof(devname)/2 511466Sbill && devname[devtype][0]) { 521466Sbill line[0] = devname[devtype][0]; 531466Sbill line[1] = devname[devtype][1]; 543261Swnj } else 551466Sbill howto = RB_SINGLE|RB_ASKNAME; 561466Sbill } 571575Sbill #endif 581466Sbill for (;;) { 591466Sbill if (howto & RB_ASKNAME) { 601466Sbill printf(": "); 611466Sbill gets(line); 621466Sbill } else 631466Sbill printf(": %s\n", line); 641466Sbill io = open(line, 0); 651466Sbill if (io >= 0) 663347Swnj copyunix(howto, io); 671466Sbill if (++retry > 2) 681466Sbill howto = RB_SINGLE|RB_ASKNAME; 691466Sbill } 70315Sbill } 71315Sbill 723347Swnj /*ARGSUSED*/ 733347Swnj copyunix(howto, io) 743347Swnj register howto, io; 75315Sbill { 76315Sbill struct exec x; 77315Sbill register int i; 78315Sbill char *addr; 79315Sbill 80315Sbill i = read(io, (char *)&x, sizeof x); 816069Smckusic if (i != sizeof x || 826069Smckusic (x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410)) 83315Sbill _stop("Bad format\n"); 84315Sbill printf("%d", x.a_text); 857444Sroot if (x.a_magic == 0413 && lseek(io, 0x400, 0) == -1) 866069Smckusic goto shread; 87315Sbill if (read(io, (char *)0, x.a_text) != x.a_text) 88315Sbill goto shread; 89315Sbill addr = (char *)x.a_text; 906069Smckusic if (x.a_magic == 0413 || x.a_magic == 0410) 916069Smckusic while ((int)addr & CLOFSET) 926069Smckusic *addr++ = 0; 93315Sbill printf("+%d", x.a_data); 94315Sbill if (read(io, addr, x.a_data) != x.a_data) 95315Sbill goto shread; 96315Sbill addr += x.a_data; 97315Sbill printf("+%d", x.a_bss); 98315Sbill x.a_bss += 128*512; /* slop */ 99315Sbill for (i = 0; i < x.a_bss; i++) 100315Sbill *addr++ = 0; 101315Sbill x.a_entry &= 0x7fffffff; 102315Sbill printf(" start 0x%x\n", x.a_entry); 103315Sbill (*((int (*)()) x.a_entry))(); 104315Sbill _exit(); 105315Sbill shread: 106315Sbill _stop("Short read\n"); 107315Sbill } 108