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#define __ELF_WORD_SIZE 64
28
29#include <sys/param.h>
30#include <sys/linker.h>
31
32#include <machine/metadata.h>
33#include <machine/elf.h>
34#include <machine/md_var.h>
35
36#include <stand.h>
37
38#include "bootstrap.h"
39#include "libuboot.h"
40#include "modinfo.h"
41
42int
43ppc64_uboot_elf_loadfile(char *filename, uint64_t dest,
44    struct preloaded_file **result)
45{
46	int	r;
47
48	r = __elfN(loadfile)(filename, dest, result);
49	if (r != 0)
50		return (r);
51
52	/*
53	 * No need to sync the icache for modules: this will
54	 * be done by the kernel after relocation.
55	 */
56	if (!strcmp((*result)->f_type, "elf kernel"))
57		__syncicache((void *) (*result)->f_addr, (*result)->f_size);
58	return (0);
59}
60
61int
62ppc64_uboot_elf_exec(struct preloaded_file *fp)
63{
64	struct file_metadata	*fmp;
65	vm_offset_t		mdp, dtbp;
66	Elf_Ehdr		*e;
67	int			error;
68	void			(*entry)(void *);
69
70	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
71		return(EFTYPE);
72	}
73	e = (Elf_Ehdr *)&fmp->md_data;
74
75	/* Handle function descriptor for ELFv1 kernels */
76	if ((e->e_flags & 3) == 2)
77		entry = (void (*)(void*))(intptr_t)e->e_entry;
78	else
79		entry = *(void (*)(void*))(uint64_t *)(intptr_t)e->e_entry;
80
81	if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0)
82		return (error);
83
84	dev_cleanup();
85	printf("Kernel args: %s\n", fp->f_args);
86
87	(*entry)((void *)mdp);
88	panic("exec returned");
89}
90
91struct file_format	uboot_elf64 =
92{
93	ppc64_uboot_elf_loadfile,
94	ppc64_uboot_elf_exec
95};
96