1/* $NetBSD: boot.c,v 1.7 2016/06/11 06:41:12 dholland Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	@(#)boot.c	8.1 (Berkeley) 6/10/93
35 */
36
37#include <lib/libsa/stand.h>
38#include <lib/libkern/libkern.h>
39#include <lib/libsa/loadfile.h>
40
41#include <sys/param.h>
42#include <sys/exec.h>
43#include <sys/exec_ecoff.h>
44
45#include "stand/common/common.h"
46#include "stand/common/cfe_api.h"
47
48#include <machine/autoconf.h>
49
50#if !defined(UNIFIED_BOOTBLOCK) && !defined(SECONDARY_BOOTBLOCK)
51#error not UNIFIED_BOOTBLOCK and not SECONDARY_BOOTBLOCK
52#endif
53
54char boot_file[128];
55char boot_flags[128];
56extern int debug;
57
58struct bootinfo_v1 bootinfo;
59
60paddr_t ffp_save, ptbr_save;
61
62int debug;
63
64char *kernelnames[] = {
65	"netbsd",		"netbsd.gz",
66	"netbsd.bak",		"netbsd.bak.gz",
67	"netbsd.old",		"netbsd.old.gz",
68	"onetbsd",		"onetbsd.gz",
69	"netbsd.mips",		"netbsd.mips.gz",
70	NULL
71};
72
73int
74#if defined(UNIFIED_BOOTBLOCK)
75main(long fwhandle,long evector,long fwentry,long fwseal)
76#else /* defined(SECONDARY_BOOTBLOCK) */
77main(long fwhandle,long fd,long fwentry)
78#endif
79{
80	char *name, **namep;
81	u_long marks[MARK_MAX];
82	u_int32_t entry;
83	int win;
84
85	/* Init prom callback vector. */
86	cfe_init(fwhandle,fwentry);
87
88	/* Init the console device */
89	init_console();
90
91	/* print a banner */
92	printf("\n");
93	printf("NetBSD/sbmips " NETBSD_VERS " " BOOT_TYPE_NAME " Bootstrap, Revision %s\n",
94	    bootprog_rev);
95	printf("\n");
96
97	/* set up the booted device descriptor */
98#if defined(UNIFIED_BOOTBLOCK)
99        if (!booted_dev_open()) {
100                printf("Boot device (%s) open failed.\n",
101		    booted_dev_name[0] ? booted_dev_name : "unknown");
102                goto fail;
103        }
104#else /* defined(SECONDARY_BOOTBLOCK) */
105	booted_dev_setfd(fd);
106#endif
107
108	printf("\n");
109
110	boot_file[0] = 0;
111	cfe_getenv("KERNEL_FILE",boot_file,sizeof(boot_file));
112
113	boot_flags[0] = 0;
114	cfe_getenv("BOOT_FLAGS",boot_flags,sizeof(boot_flags));
115
116	if (boot_file[0] != 0)
117		(void)printf("Boot file: %s\n", boot_file);
118	(void)printf("Boot flags: %s\n", boot_flags);
119
120	if (strchr(boot_flags, 'i') || strchr(boot_flags, 'I')) {
121		printf("Boot file: ");
122		kgets(boot_file, sizeof(boot_file));
123	}
124
125	memset(marks, 0, sizeof marks);
126	if (boot_file[0] != '\0') {
127		name = boot_file;
128		win = loadfile(name, marks, LOAD_KERNEL) == 0;
129	} else {
130		name = NULL;	/* XXX gcc -Wuninitialized */
131		for (namep = kernelnames, win = 0; *namep != NULL && !win;
132		    namep++)
133			win = loadfile(name = *namep, marks, LOAD_KERNEL) == 0;
134	}
135
136	entry = marks[MARK_ENTRY];
137	booted_dev_close();
138	printf("\n");
139	if (!win)
140		goto fail;
141
142	(void)printf("Entering %s at 0x%lx...\n", name, (long)entry);
143
144	cfe_flushcache(0);
145
146	memset(&bootinfo, 0,sizeof(bootinfo));
147	bootinfo.version = BOOTINFO_VERSION;
148	bootinfo.reserved = 0;
149	bootinfo.ssym = marks[MARK_SYM];
150	bootinfo.esym = marks[MARK_END];
151	strncpy(bootinfo.boot_flags,boot_flags,sizeof(bootinfo.boot_flags));
152	strncpy(bootinfo.booted_kernel,name,sizeof(bootinfo.booted_kernel));
153	bootinfo.fwhandle = fwhandle;
154	bootinfo.fwentry = fwentry;
155
156	(*(void (*)(long,long,long,long))entry)(fwhandle,
157						BOOTINFO_MAGIC,
158						(long)&bootinfo,
159						fwentry);
160
161	(void)printf("KERNEL RETURNED!\n");
162
163fail:
164	(void)printf("Boot failed!  Halting...\n");
165	halt();
166	return 1;
167}
168
169
170
171