1/*-
2 * Copyright (c) 2001 Benno Rice <benno@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/linker.h>
32
33#include <machine/metadata.h>
34#include <machine/elf.h>
35
36#include <stand.h>
37
38#include "bootstrap.h"
39#include "libofw.h"
40#include "openfirm.h"
41
42extern char		end[];
43extern vm_offset_t	reloc;	/* From <arch>/conf.c */
44
45int
46__elfN(ofw_loadfile)(char *filename, u_int64_t dest,
47    struct preloaded_file **result)
48{
49	int	r;
50
51	r = __elfN(loadfile)(filename, dest, result);
52	if (r != 0)
53		return (r);
54
55#if defined(__powerpc__)
56	/*
57	 * No need to sync the icache for modules: this will
58	 * be done by the kernel after relocation.
59	 */
60	if (!strcmp((*result)->f_type, "elf kernel"))
61		__syncicache((void *) (*result)->f_addr, (*result)->f_size);
62#endif
63	return (0);
64}
65
66int
67__elfN(ofw_exec)(struct preloaded_file *fp)
68{
69	struct file_metadata	*fmp;
70	vm_offset_t		mdp;
71	Elf_Ehdr		*e;
72	int			error;
73	intptr_t		entry;
74
75	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
76		return(EFTYPE);
77	}
78	e = (Elf_Ehdr *)&fmp->md_data;
79	entry = e->e_entry;
80
81	if ((error = md_load(fp->f_args, &mdp)) != 0)
82		return (error);
83
84	printf("Kernel entry at 0x%lx ...\n", e->e_entry);
85
86	dev_cleanup();
87	ofw_release_heap();
88	OF_chain((void *)reloc, end - (char *)reloc, (void *)entry,
89	    (void *)mdp, sizeof(mdp));
90
91	panic("exec returned");
92}
93
94struct file_format	ofw_elf =
95{
96	__elfN(ofw_loadfile),
97	__elfN(ofw_exec)
98};
99