sys/arch/mipsco/stand/common/boot.c

   1 /*      $NetBSD: boot.c,v 1.7 2009/03/14 15:36:10 dsl Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jonathan Stone, Michael Hitch, Simon Burge and Wayne Knowles.
   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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1992, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * Ralph Campbell.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)boot.c      8.1 (Berkeley) 6/10/93
  64  */
  65
  66 #include <lib/libsa/stand.h>
  67 #include <lib/libsa/loadfile.h>
  68 #include <lib/libkern/libkern.h>
  69
  70 #include <sys/param.h>
  71 #include <sys/exec.h>
  72 #include <sys/exec_elf.h>
  73
  74 #include <machine/prom.h>
  75
  76 #include "common.h"
  77 #include "bootinfo.h"
  78
  79 /*
  80  * We won't go overboard with gzip'd kernel names.  After all we can
  81  * still boot a gzip'd kernel called "netbsd.mipsco" - it doesn't need
  82  * the .gz suffix.
  83  */
  84 char *kernelnames[] = {
  85         "netbsd",
  86         "netbsd.gz",
  87         "netbsd.bak",
  88         "netbsd.old",
  89         "netbsd.mipsco",
  90         "netbsd.elf",
  91         NULL
  92 };
  93
  94
  95 static char *devsplit(char *, char *);
  96 int main(int, char **);
  97
  98 /*
  99  * This gets arguments from the first stage boot lader, calls PROM routines
 100  * to open and load the program to boot, and then transfers execution to
 101  * that new program.
 102  */
 103 int
 104 main(int argc, char **argv)
 105 {
 106         char *name, **namep, *dev, *kernel;
 107         char bootname[PATH_MAX], bootpath[PATH_MAX];
 108         int win;
 109         u_long marks[MARK_MAX];
 110         struct btinfo_symtab bi_syms;
 111         struct btinfo_bootpath bi_bpath;
 112         extern void prom_init(void);
 113         void (*entry)(int, char **, char **, u_int, char *);
 114
 115         prom_init();
 116
 117         /* print a banner */
 118         printf("\n");
 119         printf("NetBSD/mipsco " NETBSD_VERS " " BOOT_TYPE_NAME
 120                " Bootstrap, Revision %s\n", bootprog_rev);
 121         printf("(%s, %s)\n\n", bootprog_maker, bootprog_date);
 122
 123         /* initialise bootinfo structure early */
 124         bi_init(BOOTINFO_ADDR);
 125
 126         dev = name = NULL;
 127         if (argc > 1) {
 128                 kernel = devsplit(argv[1], bootname);
 129                 if (*bootname) {
 130                         dev = bootname;
 131                         if (*kernel)
 132                                 name = argv[1];
 133                         ++argv;
 134                         --argc;
 135                 }
 136
 137         }
 138         if (dev == NULL) {
 139                 (void) devsplit(argv[0], bootname);
 140                 dev = bootname;
 141         }
 142
 143         memset(marks, 0, sizeof marks);
 144         if (name != NULL)
 145                 win = (loadfile(name, marks, LOAD_KERNEL) == 0);
 146         else {
 147                 win = 0;
 148                 for (namep = kernelnames, win = 0; *namep != NULL && !win;
 149                     namep++) {
 150                         kernel = *namep;
 151                         strcpy(bootpath, dev);
 152                         strcat(bootpath, kernel);
 153                         printf("Loading: %s\n", bootpath);
 154                         win = (loadfile(bootpath, marks, LOAD_ALL) != -1);
 155                         if (win) {
 156                                 name = bootpath;
 157                         }
 158                 }
 159         }
 160         if (!win)
 161                 goto fail;
 162
 163         strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN);
 164         bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath));
 165
 166         entry = (void *) marks[MARK_ENTRY];
 167         bi_syms.nsym = marks[MARK_NSYM];
 168         bi_syms.ssym = marks[MARK_SYM];
 169         bi_syms.esym = marks[MARK_END];
 170         bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms));
 171
 172         printf("Starting at 0x%x\n\n", (u_int)entry);
 173
 174         (*entry)(argc, argv, NULL, BOOTINFO_MAGIC, (char *)BOOTINFO_ADDR);
 175
 176         (void)printf("KERNEL RETURNED!\n");
 177
 178 fail:
 179         (void)printf("Boot failed!  Halting...\n");
 180         return (0);
 181 }
 182
 183 /*
 184  * strip out device name and kernel name
 185  */
 186 static char *
 187 devsplit(char *fname, char *devname)
 188 {
 189         char *src, *dst;
 190
 191         dst = devname;
 192         for (src = fname; *src;/**/)
 193                 if ((*dst++ = *src++) == ')') {
 194                         *dst = (char) 0;
 195                         return src;
 196                 }
 197         *devname = (char) 0;
 198         return fname;
 199 }