1/*	$OpenBSD: netboot.c,v 1.9 2019/04/10 04:17:33 deraadt Exp $	*/
2/*	$NetBSD: netboot.c,v 1.1 1996/09/18 20:03:12 cgd Exp $	*/
3
4/*
5 * Copyright (c) 1992, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Ralph Campbell.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	@(#)boot.c	8.1 (Berkeley) 6/10/93
36 */
37
38#include <lib/libkern/libkern.h>
39#include <lib/libsa/stand.h>
40
41#include <sys/param.h>
42#include <sys/exec.h>
43
44#include <machine/rpb.h>
45#include <machine/prom.h>
46
47char boot_file[128];
48char boot_flags[128];
49
50extern char bootprog_name[], bootprog_rev[];
51
52vaddr_t ptbr_save;
53
54int debug;
55
56void
57main()
58{
59	u_int64_t entry;
60	uint64_t marks[MARK_MAX];
61	int rc;
62
63	/* Init prom callback vector. */
64	init_prom_calls();
65
66	/* print a banner */
67	printf("%s %s\n", bootprog_name, bootprog_rev);
68
69	/* switch to OSF pal code. */
70	OSFpal();
71
72	prom_getenv(PROM_E_BOOTED_FILE, boot_file, sizeof(boot_file));
73	prom_getenv(PROM_E_BOOTED_OSFLAGS, boot_flags, sizeof(boot_flags));
74
75	if (boot_file[0] == '\0')
76		bcopy("bsd", boot_file, sizeof "bsd");
77	else
78		(void)printf("Boot: %s %s\n", boot_file, boot_flags);
79
80	(void)printf("Loading %s...\n", boot_file);
81	marks[MARK_START] = 0;
82	rc = loadfile(boot_file, &marks, LOAD_KERNEL | COUNT_KERNEL);
83	(void)printf("\n");
84	if (rc == 0) {
85		entry = marks[MARK_START];
86		(void)printf("Entering kernel at 0x%lx...\n", entry);
87		(*(void (*)(u_int64_t, u_int64_t, u_int64_t))entry)
88		    (0, ptbr_save, 0);
89	}
90
91	(void)printf("Boot failed!  Halting...\n");
92	halt();
93}
94