sys/boot/ia64/skiload/main.c

   1 /*-
   2  * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
   3  * Copyright (c) 1998,2000 Doug Rabson <dfr@freebsd.org>
   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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/boot/ia64/skiload/main.c,v 1.4 2003/07/17 01:49:59 marcel Exp $
  28  * $DragonFly: src/sys/boot/ia64/skiload/main.c,v 1.1 2003/11/10 07:08:37 dillon Exp $
  29  */
  30
  31 #include <stand.h>
  32 #include <string.h>
  33 #include <setjmp.h>
  34 #include <machine/fpu.h>
  35
  36 #include "bootstrap.h"
  37 #include "libski.h"
  38
  39 extern char bootprog_name[];
  40 extern char bootprog_rev[];
  41 extern char bootprog_date[];
  42 extern char bootprog_maker[];
  43
  44 struct ski_devdesc      currdev;        /* our current device */
  45 struct arch_switch      archsw;         /* MI/MD interface boundary */
  46
  47 void
  48 ski_main(void)
  49 {
  50         static char malloc[512*1024];
  51         int i;
  52
  53         /*
  54          * initialise the heap as early as possible.  Once this is done,
  55          * alloc() is usable. The stack is buried inside us, so this is
  56          * safe.
  57          */
  58         setheap((void *)malloc, (void *)(malloc + 512*1024));
  59
  60         /*
  61          * XXX Chicken-and-egg problem; we want to have console output
  62          * early, but some console attributes may depend on reading from
  63          * eg. the boot device, which we can't do yet.  We can use
  64          * printf() etc. once this is done.
  65          */
  66         cons_probe();
  67
  68         /*
  69          * Initialise the block cache
  70          */
  71         bcache_init(32, 512);           /* 16k XXX tune this */
  72
  73         /*
  74          * March through the device switch probing for things.
  75          */
  76         for (i = 0; devsw[i] != NULL; i++)
  77                 if (devsw[i]->dv_init != NULL)
  78                         (devsw[i]->dv_init)();
  79
  80         printf("\n");
  81         printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
  82         printf("(%s, %s)\n", bootprog_maker, bootprog_date);
  83 #if 0
  84         printf("Memory: %ld k\n", memsize() / 1024);
  85 #endif
  86
  87         /* XXX presumes that biosdisk is first in devsw */
  88         currdev.d_dev = devsw[0];
  89         currdev.d_type = currdev.d_dev->dv_type;
  90         currdev.d_kind.skidisk.unit = 0;
  91         /* XXX should be able to detect this, default to autoprobe */
  92         currdev.d_kind.skidisk.slice = -1;
  93         /* default to 'a' */
  94         currdev.d_kind.skidisk.partition = 0;
  95
  96 #if 0
  97         /* Create arc-specific variables */
  98         bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE);
  99         if (bootfile)
 100                 setenv("bootfile", bootfile, 1);
 101 #endif
 102
 103         env_setenv("currdev", EV_VOLATILE, ski_fmtdev(&currdev),
 104             ski_setcurrdev, env_nounset);
 105         env_setenv("loaddev", EV_VOLATILE, ski_fmtdev(&currdev), env_noset,
 106             env_nounset);
 107
 108         setenv("LINES", "24", 1);       /* optional */
 109
 110         archsw.arch_autoload = ski_autoload;
 111         archsw.arch_getdev = ski_getdev;
 112         archsw.arch_copyin = ski_copyin;
 113         archsw.arch_copyout = ski_copyout;
 114         archsw.arch_readin = ski_readin;
 115
 116         interact();                     /* doesn't return */
 117
 118         exit(0);
 119 }
 120
 121 COMMAND_SET(quit, "quit", "exit the loader", command_quit);
 122
 123 static int
 124 command_quit(int argc, char *argv[])
 125 {
 126         exit(0);
 127         return (CMD_OK);
 128 }