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boot.c revision 1.4.2.2 
      1 /* $NetBSD: boot.c,v 1.4.2.2 1997/09/06 18:00:04 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ralph Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)boot.c	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 #include <lib/libsa/stand.h>
     42 #include <lib/libkern/libkern.h>
     43 
     44 #include <sys/param.h>
     45 #include <sys/exec.h>
     46 #include <sys/exec_ecoff.h>
     47 
     48 #include <machine/autoconf.h>
     49 #include <machine/prom.h>
     50 
     51 #include <machine/pte.h>
     52 
     53 #include "common.h"
     54 
     55 int loadfile __P((char *, u_int64_t *));
     56 
     57 char boot_file[128];
     58 char boot_flags[128];
     59 
     60 struct bootinfo bootinfo;
     61 
     62 extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
     63 
     64 vm_offset_t ffp_save, ptbr_save;
     65 
     66 extern vm_offset_t ssym, esym;
     67 
     68 int debug;
     69 
     70 char *kernelnames[] = {
     71 	"netbsd",		"netbsd.gz",
     72 	"netbsd.bak",		"netbsd.bak.gz",
     73 	"netbsd.old",		"netbsd.old.gz",
     74 	"onetbsd",		"onetbsd.gz",
     75 	NULL
     76 };
     77 
     78 void
     79 main()
     80 {
     81 	char *name, **namep;
     82 	u_int64_t entry;
     83 	int win;
     84 
     85 	/* Init prom callback vector. */
     86 	init_prom_calls();
     87 
     88 	/* print a banner */
     89 	printf("\n");
     90 	printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
     91 	printf("(%s, %s)\n", bootprog_maker, bootprog_date);
     92 	printf("\n");
     93 
     94 	/* switch to OSF pal code. */
     95 	OSFpal();
     96 
     97 	printf("\n");
     98 
     99 	prom_getenv(PROM_E_BOOTED_FILE, boot_file, sizeof(boot_file));
    100 	prom_getenv(PROM_E_BOOTED_OSFLAGS, boot_flags, sizeof(boot_flags));
    101 
    102 	if (boot_file[0] != 0)
    103 		(void)printf("Boot file: %s\n", boot_file);
    104 	(void)printf("Boot flags: %s\n", boot_flags);
    105 
    106 	if (boot_file[0] != '\0')
    107 		win = (loadfile(name = boot_file, &entry) == 0);
    108 	else
    109 		for (namep = kernelnames, win = 0; *namep != NULL && !win;
    110 		    namep++)
    111 			win = (loadfile(name = *namep, &entry) == 0);
    112 
    113 	printf("\n");
    114 	if (win) {
    115 		/*
    116 		 * Fill in the bootinfo for the kernel.
    117 		 */
    118 		bzero(&bootinfo, sizeof(bootinfo));
    119 		bootinfo.version    = 1;
    120 		bootinfo.un.v1.ssym = ssym;
    121 		bootinfo.un.v1.esym = esym;
    122 		bcopy(name, bootinfo.un.v1.booted_kernel,
    123 		    sizeof(bootinfo.un.v1.booted_kernel));
    124 		bcopy(boot_flags, bootinfo.un.v1.boot_flags,
    125 		    sizeof(bootinfo.un.v1.boot_flags));
    126 		bootinfo.un.v1.hwrpb = NULL;
    127 		bootinfo.un.v1.hwrpbsize = 0;
    128 		bootinfo.un.v1.cngetc = NULL;
    129 		bootinfo.un.v1.cnputc = NULL;
    130 		bootinfo.un.v1.cnpollc = NULL;
    131 
    132 		(void)printf("Entering %s at 0x%lx...\n", name, entry);
    133 		(*(void (*)())entry)(ffp_save, ptbr_save,
    134 		    BOOTINFO_MAGIC, &bootinfo, 0);
    135 	}
    136 
    137 	(void)printf("Boot failed!  Halting...\n");
    138 	halt();
    139 }
    140