sys/arch/next68k/stand/boot/boot.c

   1 /*      $NetBSD: boot.c,v 1.7.6.4 2005/01/24 08:34:26 skrll Exp $       */
   2 /*
   3  * Copyright (c) 1994 Rolf Grossmann
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Rolf Grossmann.
  17  * 4. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/reboot.h>
  34
  35 #include <lib/libsa/stand.h>
  36 #include <lib/libsa/loadfile.h>
  37 #include <lib/libkern/libkern.h>
  38
  39 #include <machine/cpu.h>        /* for NEXT_RAMBASE */
  40
  41 #include <next68k/next68k/nextrom.h>
  42
  43 #define KERN_LOADADDR NEXT_RAMBASE
  44
  45 extern int errno;
  46
  47 extern char *mg;
  48 #define MON(type, off) (*(type *)((u_int) (mg) + off))
  49
  50 int devparse(const char *, int *, char *, char *, char *, char **);
  51
  52 /* the PROM overwrites MG_boot_arg :-( */
  53 /* #define PROCESS_ARGS */
  54
  55 /*
  56  * Boot device is derived from PROM provided information.
  57  */
  58
  59 extern char bootprog_rev[];
  60 extern char bootprog_name[];
  61 extern int build;
  62 #define KNAMEN 100
  63 char kernel[KNAMEN];
  64 int entry_point;                /* return value filled in by machdep_start */
  65 int turbo;
  66
  67 extern void rtc_init(void);
  68
  69 extern int try_bootp;
  70
  71 volatile int qq;
  72
  73 int
  74 main(char *boot_arg)
  75 {
  76         int fd;
  77         u_long marks[MARK_MAX];
  78         int dev;
  79         char count, lun, part;
  80         char machine;
  81         char *file;
  82 #ifdef PROCESS_ARGS
  83         char *kernel_args = MON(char *, MG_boot_dev);
  84 #endif
  85
  86         machine = MON(char, MG_machine_type);
  87         if (machine == NeXT_TURBO_MONO || machine == NeXT_TURBO_COLOR)
  88                 turbo = 1;
  89         else
  90                 turbo = 0;
  91
  92         memset(marks, 0, sizeof(marks));
  93         printf(">> %s BOOT [%s #%d]\n", bootprog_name, bootprog_rev, build);
  94         printf(">> type %d, %sturbo\n", machine, turbo ? "" : "non-");
  95         rtc_init();
  96
  97         try_bootp = 1;
  98
  99 #if 0
 100         {
 101                 int i;
 102                 int *p = (int *)mg;
 103                 for (i = 0; i <= 896; ) {
 104                         printf ("%d: %x %x %x %x %x %x %x %x\n", i, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 105                         p = &p[8];
 106                         i += 8*4;
 107                 }
 108         }
 109         printf("Press return to continue.\n");
 110         getchar();
 111 #endif
 112
 113         strcpy(kernel, boot_arg);
 114         entry_point = 0;
 115
 116         for (;;) {
 117                 marks[MARK_START] = (u_long)KERN_LOADADDR;
 118                 fd = loadfile(kernel, marks, LOAD_KERNEL);
 119                 if (fd != -1) {
 120                         break;
 121                 }
 122
 123                 printf("load of %s: %s\n", kernel, strerror(errno));
 124                 printf("boot: ");
 125                 gets(kernel);
 126                 if (kernel[0] == '\0')
 127                         return 0;
 128
 129 #ifdef PROCESS_ARGS
 130                 kernel_args = strchr(kernel, ')');
 131                 if (kernel_args == NULL)
 132                         kernel_args = kernel;
 133                 kernel_args = strchr(kernel_args, ' ');
 134                 if (kernel_args)
 135                         *kernel_args++ = '\0';
 136 #endif
 137         }
 138
 139         dev = 0;
 140         count = lun = part = 0;
 141         if (devparse(kernel, &dev, &count, &lun, &part, &file) == 0) {
 142                 char *p = (char *)marks[MARK_END];
 143                 strcpy (p, devsw[dev].dv_name);
 144                 MON(char *, MG_boot_dev) = p;
 145                 p += strlen (p) + 1;
 146                 sprintf (p, "(%d,%d,%d)", count, lun, part);
 147                 MON(char *, MG_boot_info) = p;
 148                 p += strlen (p) + 1;
 149                 sprintf (p, "%s", file);
 150                 MON(char *, MG_boot_file) = p;
 151 #ifdef PROCESS_ARGS
 152                 p += strlen (p) + 1;
 153                 if (kernel_args)
 154                         strcpy (p, kernel_args);
 155                 else
 156                         *p = 0;
 157                 MON(char *, MG_boot_arg) = p;
 158 #endif
 159         }
 160
 161         *((u_long *)KERN_LOADADDR) = marks[MARK_END] - KERN_LOADADDR;
 162         printf("entry 0x%lx esym 0x%lx\n",
 163                marks[MARK_ENTRY], marks[MARK_END] - KERN_LOADADDR);
 164         return marks[MARK_ENTRY];
 165 }