main.c revision 117677 
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
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/boot/ia64/ski/main.c 117677 2003-07-17 01:49:59Z marcel $");
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
39extern char bootprog_name[];
40extern char bootprog_rev[];
41extern char bootprog_date[];
42extern char bootprog_maker[];
43
44struct ski_devdesc	currdev;	/* our current device */
45struct arch_switch	archsw;		/* MI/MD interface boundary */
46
47void
48ski_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
121COMMAND_SET(quit, "quit", "exit the loader", command_quit);
122
123static int
124command_quit(int argc, char *argv[])
125{
126	exit(0);
127	return (CMD_OK);
128}
129