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/param.h>
28#include <sys/linker.h>
29
30#include <machine/metadata.h>
31#include <machine/elf.h>
32#if defined(__powerpc__)
33#include <machine/md_var.h>
34#endif
35
36#include <stand.h>
37
38#include "bootstrap.h"
39#include "libofw.h"
40#include "openfirm.h"
41#include "modinfo.h"
42
43extern char		end[];
44extern vm_offset_t	reloc;	/* From <arch>/conf.c */
45
46int
47__elfN(ofw_loadfile)(char *filename, uint64_t dest,
48    struct preloaded_file **result)
49{
50	int	r;
51
52	r = __elfN(loadfile)(filename, dest, result);
53	if (r != 0)
54		return (r);
55
56#if defined(__powerpc__)
57	/*
58	 * No need to sync the icache for modules: this will
59	 * be done by the kernel after relocation.
60	 */
61	if (!strcmp((*result)->f_type, "elf kernel"))
62		__syncicache((void *) (*result)->f_addr, (*result)->f_size);
63#endif
64	return (0);
65}
66
67int
68__elfN(ofw_exec)(struct preloaded_file *fp)
69{
70	struct file_metadata	*fmp;
71	vm_offset_t		mdp, dtbp;
72	Elf_Ehdr		*e;
73	int			error;
74	intptr_t		entry;
75
76	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
77		return(EFTYPE);
78	}
79	e = (Elf_Ehdr *)&fmp->md_data;
80	entry = e->e_entry;
81
82	if ((error = md_load(fp->f_args, &mdp, &dtbp)) != 0)
83		return (error);
84
85	printf("Kernel entry at 0x%x ...\n", entry);
86
87	dev_cleanup();
88	if (dtbp != 0) {
89		OF_quiesce();
90		((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp,
91		    0, 0, (void *)mdp, 0xfb5d104d);
92	} else {
93		OF_chain((void *)reloc, end - (char *)reloc, (void *)entry,
94		    (void *)mdp, 0xfb5d104d);
95	}
96
97	panic("exec returned");
98}
99
100struct file_format	ofw_elf =
101{
102	__elfN(ofw_loadfile),
103	__elfN(ofw_exec)
104};
105