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      1 /* $NetBSD: boot.c,v 1.7 2016/06/11 06:41:12 dholland 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. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)boot.c	8.1 (Berkeley) 6/10/93
     35  */
     36 
     37 #include <lib/libsa/stand.h>
     38 #include <lib/libkern/libkern.h>
     39 #include <lib/libsa/loadfile.h>
     40 
     41 #include <sys/param.h>
     42 #include <sys/exec.h>
     43 #include <sys/exec_ecoff.h>
     44 
     45 #include "stand/common/common.h"
     46 #include "stand/common/cfe_api.h"
     47 
     48 #include <machine/autoconf.h>
     49 
     50 #if !defined(UNIFIED_BOOTBLOCK) && !defined(SECONDARY_BOOTBLOCK)
     51 #error not UNIFIED_BOOTBLOCK and not SECONDARY_BOOTBLOCK
     52 #endif
     53 
     54 char boot_file[128];
     55 char boot_flags[128];
     56 extern int debug;
     57 
     58 struct bootinfo_v1 bootinfo;
     59 
     60 paddr_t ffp_save, ptbr_save;
     61 
     62 int debug;
     63 
     64 char *kernelnames[] = {
     65 	"netbsd",		"netbsd.gz",
     66 	"netbsd.bak",		"netbsd.bak.gz",
     67 	"netbsd.old",		"netbsd.old.gz",
     68 	"onetbsd",		"onetbsd.gz",
     69 	"netbsd.mips",		"netbsd.mips.gz",
     70 	NULL
     71 };
     72 
     73 int
     74 #if defined(UNIFIED_BOOTBLOCK)
     75 main(long fwhandle,long evector,long fwentry,long fwseal)
     76 #else /* defined(SECONDARY_BOOTBLOCK) */
     77 main(long fwhandle,long fd,long fwentry)
     78 #endif
     79 {
     80 	char *name, **namep;
     81 	u_long marks[MARK_MAX];
     82 	u_int32_t entry;
     83 	int win;
     84 
     85 	/* Init prom callback vector. */
     86 	cfe_init(fwhandle,fwentry);
     87 
     88 	/* Init the console device */
     89 	init_console();
     90 
     91 	/* print a banner */
     92 	printf("\n");
     93 	printf("NetBSD/sbmips " NETBSD_VERS " " BOOT_TYPE_NAME " Bootstrap, Revision %s\n",
     94 	    bootprog_rev);
     95 	printf("\n");
     96 
     97 	/* set up the booted device descriptor */
     98 #if defined(UNIFIED_BOOTBLOCK)
     99         if (!booted_dev_open()) {
    100                 printf("Boot device (%s) open failed.\n",
    101 		    booted_dev_name[0] ? booted_dev_name : "unknown");
    102                 goto fail;
    103         }
    104 #else /* defined(SECONDARY_BOOTBLOCK) */
    105 	booted_dev_setfd(fd);
    106 #endif
    107 
    108 	printf("\n");
    109 
    110 	boot_file[0] = 0;
    111 	cfe_getenv("KERNEL_FILE",boot_file,sizeof(boot_file));
    112 
    113 	boot_flags[0] = 0;
    114 	cfe_getenv("BOOT_FLAGS",boot_flags,sizeof(boot_flags));
    115 
    116 	if (boot_file[0] != 0)
    117 		(void)printf("Boot file: %s\n", boot_file);
    118 	(void)printf("Boot flags: %s\n", boot_flags);
    119 
    120 	if (strchr(boot_flags, 'i') || strchr(boot_flags, 'I')) {
    121 		printf("Boot file: ");
    122 		kgets(boot_file, sizeof(boot_file));
    123 	}
    124 
    125 	memset(marks, 0, sizeof marks);
    126 	if (boot_file[0] != '\0') {
    127 		name = boot_file;
    128 		win = loadfile(name, marks, LOAD_KERNEL) == 0;
    129 	} else {
    130 		name = NULL;	/* XXX gcc -Wuninitialized */
    131 		for (namep = kernelnames, win = 0; *namep != NULL && !win;
    132 		    namep++)
    133 			win = loadfile(name = *namep, marks, LOAD_KERNEL) == 0;
    134 	}
    135 
    136 	entry = marks[MARK_ENTRY];
    137 	booted_dev_close();
    138 	printf("\n");
    139 	if (!win)
    140 		goto fail;
    141 
    142 	(void)printf("Entering %s at 0x%lx...\n", name, (long)entry);
    143 
    144 	cfe_flushcache(0);
    145 
    146 	memset(&bootinfo, 0,sizeof(bootinfo));
    147 	bootinfo.version = BOOTINFO_VERSION;
    148 	bootinfo.reserved = 0;
    149 	bootinfo.ssym = marks[MARK_SYM];
    150 	bootinfo.esym = marks[MARK_END];
    151 	strncpy(bootinfo.boot_flags,boot_flags,sizeof(bootinfo.boot_flags));
    152 	strncpy(bootinfo.booted_kernel,name,sizeof(bootinfo.booted_kernel));
    153 	bootinfo.fwhandle = fwhandle;
    154 	bootinfo.fwentry = fwentry;
    155 
    156 	(*(void (*)(long,long,long,long))entry)(fwhandle,
    157 						BOOTINFO_MAGIC,
    158 						(long)&bootinfo,
    159 						fwentry);
    160 
    161 	(void)printf("KERNEL RETURNED!\n");
    162 
    163 fail:
    164 	(void)printf("Boot failed!  Halting...\n");
    165 	halt();
    166 	return 1;
    167 }
    168 
    169 
    170 
    171