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#define __ELF_WORD_SIZE 64
31
32#include <sys/param.h>
33#include <sys/linker.h>
34
35#include <machine/metadata.h>
36#include <machine/elf.h>
37#include <machine/md_var.h>
38
39#include <stand.h>
40
41#include "bootstrap.h"
42#include "libuboot.h"
43
44vm_offset_t md_load64(char *args, vm_offset_t *modulep, vm_offset_t *dtb);
45extern char		end[];
46extern vm_offset_t	reloc;	/* From <arch>/conf.c */
47
48int
49ppc64_uboot_elf_loadfile(char *filename, uint64_t dest,
50    struct preloaded_file **result)
51{
52	int	r;
53
54	r = __elfN(loadfile)(filename, dest, result);
55	if (r != 0)
56		return (r);
57
58	/*
59	 * No need to sync the icache for modules: this will
60	 * be done by the kernel after relocation.
61	 */
62	if (!strcmp((*result)->f_type, "elf kernel"))
63		__syncicache((void *) (*result)->f_addr, (*result)->f_size);
64	return (0);
65}
66
67int
68ppc64_uboot_elf_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	void			(*entry)(void *);
75
76	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
77		return(EFTYPE);
78	}
79	e = (Elf_Ehdr *)&fmp->md_data;
80
81	/* Handle function descriptor for ELFv1 kernels */
82	if ((e->e_flags & 3) == 2)
83		entry = (void (*)(void*))(intptr_t)e->e_entry;
84	else
85		entry = *(void (*)(void*))(uint64_t *)(intptr_t)e->e_entry;
86
87	if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0)
88		return (error);
89
90	dev_cleanup();
91	printf("Kernel args: %s\n", fp->f_args);
92
93	(*entry)((void *)mdp);
94	panic("exec returned");
95}
96
97struct file_format	uboot_elf64 =
98{
99	ppc64_uboot_elf_loadfile,
100	ppc64_uboot_elf_exec
101};
102