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      1 /*	$NetBSD: main.c,v 1.4 2012/12/27 20:21:51 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 Michael Smith <msmith (at) freebsd.org>
      5  * Copyright (c) 1998,2000 Doug Rabson <dfr (at) freebsd.org>
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 
     32 #include <lib/libsa/stand.h>
     33 #include <lib/libsa/loadfile.h>
     34 
     35 #include "bootstrap.h"
     36 #include "libski.h"
     37 
     38 static int command_quit(int argc, char *argv[]);
     39 
     40 extern char bootprog_name[];
     41 extern char bootprog_rev[];
     42 int skifs_dev_init(void);
     43 
     44 struct bootblk_command commands[] = {
     45 	COMMON_COMMANDS,
     46 	{ "quit",	"exit the loader",	command_quit },
     47 	{ NULL,		NULL,			NULL	     },
     48 };
     49 
     50 struct ski_devdesc	currdev;	/* our current device */
     51 struct arch_switch	archsw;		/* MI/MD interface boundary */
     52 
     53 static int
     54 ski_autoload(void)
     55 {
     56 
     57 	return (0);
     58 }
     59 
     60 void
     61 ski_main(void)
     62 {
     63 	static char malloc[512*1024];
     64 	int i;
     65 
     66 	/*
     67 	 * initialise the heap as early as possible.  Once this is done,
     68 	 * alloc() is usable. The stack is buried inside us, so this is
     69 	 * safe.
     70 	 */
     71 	setheap((void *)malloc, (void *)(malloc + 512*1024));
     72 
     73 	/*
     74 	 * XXX Chicken-and-egg problem; we want to have console output
     75 	 * early, but some console attributes may depend on reading from
     76 	 * eg. the boot device, which we can't do yet.  We can use
     77 	 * printf() etc. once this is done.
     78 	 */
     79 	cons_probe();
     80 
     81 	/*
     82 	 * Initialise the block cache XXX: Fixme: do we need the bcache ?
     83 	 */
     84 	/*	bcache_init(32, 512);	*/	/* 16k XXX tune this */
     85 
     86 	/* Initialise skifs.c */
     87 
     88 	skifs_dev_init();
     89 
     90 	printf("\n");
     91 	printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
     92 #if 0
     93 	printf("Memory: %ld k\n", memsize() / 1024);
     94 #endif
     95 
     96 	/* XXX presumes that biosdisk is first in devsw */
     97 	currdev.d_dev = &devsw[0];
     98 	currdev.d_type = DEVT_DISK;
     99 	currdev.d_kind.skidisk.unit = 0;
    100 	/* XXX should be able to detect this, default to autoprobe */
    101 	currdev.d_kind.skidisk.slice = -1;
    102 	/* default to 'a' */
    103 	currdev.d_kind.skidisk.partition = 0;
    104 
    105 #if 0
    106 	/* Create arc-specific variables */
    107 	bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE);
    108 	if (bootfile)
    109 		setenv("bootfile", bootfile, 1);
    110 #endif
    111 
    112 	env_setenv("currdev", EV_VOLATILE, ski_fmtdev(&currdev),
    113 	    (ev_sethook_t *) ski_setcurrdev, env_nounset);
    114 	env_setenv("loaddev", EV_VOLATILE, ski_fmtdev(&currdev), env_noset,
    115 	    env_nounset);
    116 
    117 	setenv("LINES", "24", 1);	/* optional */
    118 
    119 	archsw.arch_autoload = ski_autoload;
    120 	archsw.arch_getdev = ski_getdev;
    121 	archsw.arch_copyin = ski_copyin;
    122 	archsw.arch_copyout = ski_copyout;
    123 	archsw.arch_readin = ski_readin;
    124 
    125 	interact();			/* doesn't return */
    126 
    127 	exit(0);
    128 }
    129 
    130 static int
    131 command_quit(int argc, char *argv[])
    132 {
    133 	exit(0);
    134 	return (CMD_OK);
    135 }
    136