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

   1 /* $NetBSD$ */
   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 <machine/autoconf.h>
  46 #include <machine/prom.h>
  47 #include <machine/rpb.h>
  48
  49 #include <machine/pte.h>
  50
  51 #include "common.h"
  52
  53 #if !defined(UNIFIED_BOOTBLOCK) && !defined(SECONDARY_BOOTBLOCK)
  54 #error not UNIFIED_BOOTBLOCK and not SECONDARY_BOOTBLOCK
  55 #endif
  56
  57 char boot_file[128];
  58 char boot_flags[128];
  59
  60 struct bootinfo_v1 bootinfo_v1;
  61
  62 paddr_t ffp_save, ptbr_save;
  63
  64 int debug;
  65
  66 char *kernelnames[] = {
  67         "netbsd",               "netbsd.gz",
  68         "netbsd.bak",           "netbsd.bak.gz",
  69         "netbsd.old",           "netbsd.old.gz",
  70         "onetbsd",              "onetbsd.gz",
  71         "netbsd.alpha",         "netbsd.alpha.gz",
  72         NULL
  73 };
  74
  75 void
  76 #if defined(UNIFIED_BOOTBLOCK)
  77 main(void)
  78 #else /* defined(SECONDARY_BOOTBLOCK) */
  79 main(long fd)
  80 #endif
  81 {
  82         char *name, **namep;
  83         u_long marks[MARK_MAX];
  84         u_int64_t entry;
  85         int win, loadflag;
  86
  87         /* Init prom callback vector. */
  88         init_prom_calls();
  89
  90         /* print a banner */
  91         printf("\n");
  92         printf("NetBSD/alpha " NETBSD_VERS " " BOOT_TYPE_NAME " Bootstrap, Revision %s\n",
  93             bootprog_rev);
  94         printf("(%s, %s)\n", bootprog_maker, bootprog_date);
  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         /* switch to OSF pal code. */
 109         OSFpal();
 110
 111         printf("\n");
 112
 113         prom_getenv(PROM_E_BOOTED_FILE, boot_file, sizeof(boot_file));
 114         prom_getenv(PROM_E_BOOTED_OSFLAGS, 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                 gets(boot_file);
 123         }
 124
 125 #ifdef NO_LOAD_NOTE
 126         loadflag = LOAD_KERNEL & ~LOAD_NOTE;
 127 #else
 128         loadflag = LOAD_KERNEL;
 129 #endif
 130
 131         memset(marks, 0, sizeof marks);
 132         if (boot_file[0] != '\0') {
 133                 name = boot_file;
 134                 win = loadfile(name, marks, loadflag) == 0;
 135         } else {
 136                 name = NULL;    /* XXX gcc -Wuninitialized */
 137                 for (namep = kernelnames, win = 0; *namep != NULL && !win;
 138                     namep++) {
 139                         name = *namep;
 140                         win = loadfile(name, marks, loadflag) == 0;
 141                 }
 142         }
 143
 144         entry = marks[MARK_ENTRY];
 145         booted_dev_close();
 146         printf("\n");
 147         if (!win)
 148                 goto fail;
 149
 150         /*
 151          * Fill in the bootinfo for the kernel.
 152          */
 153         memset(&bootinfo_v1, 0, sizeof(bootinfo_v1));
 154         bootinfo_v1.ssym = marks[MARK_SYM];
 155         bootinfo_v1.esym = marks[MARK_END];
 156         memcpy(bootinfo_v1.booted_kernel, name,
 157             sizeof(bootinfo_v1.booted_kernel));
 158         memcpy(bootinfo_v1.boot_flags, boot_flags,
 159             sizeof(bootinfo_v1.boot_flags));
 160         bootinfo_v1.hwrpb = (void *)HWRPB_ADDR;
 161         bootinfo_v1.hwrpbsize = ((struct rpb *)HWRPB_ADDR)->rpb_size;
 162         bootinfo_v1.cngetc = NULL;
 163         bootinfo_v1.cnputc = NULL;
 164         bootinfo_v1.cnpollc = NULL;
 165
 166         (void)printf("Entering %s at 0x%lx...\n", name, entry);
 167         alpha_pal_imb();
 168         (*(void (*)(u_int64_t, u_int64_t, u_int64_t, void *, u_int64_t,
 169             u_int64_t))entry)(ffp_save, ptbr_save, BOOTINFO_MAGIC,
 170             &bootinfo_v1, 1, 0);
 171
 172         (void)printf("KERNEL RETURNED!\n");
 173
 174 fail:
 175         (void)printf("Boot failed!  Halting...\n");
 176         halt();
 177 }