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 "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
47ppc64_ofw_elf_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	/*
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	return (0);
63}
64
65int
66ppc64_ofw_elf_exec(struct preloaded_file *fp)
67{
68	struct file_metadata	*fmp;
69	vm_offset_t		mdp, dtbp;
70	Elf_Ehdr		*e;
71	int			error;
72	intptr_t		entry;
73
74	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
75		return(EFTYPE);
76	}
77	e = (Elf_Ehdr *)&fmp->md_data;
78
79	/* Handle function descriptor for ELFv1 kernels */
80	if ((e->e_flags & 3) == 2)
81		entry = e->e_entry;
82	else
83		entry = *(uint64_t *)(intptr_t)e->e_entry;
84
85	if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0)
86		return (error);
87
88	printf("Kernel entry at 0x%x ...\n", entry);
89
90	dev_cleanup();
91
92	if (dtbp != 0) {
93		OF_quiesce();
94		((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp,
95		    0, 0, (void *)mdp, 0xfb5d104d);
96	} else {
97		OF_chain((void *)reloc, end - (char *)reloc, (void *)entry,
98		    (void *)mdp, 0xfb5d104d);
99	}
100
101	panic("exec returned");
102}
103
104struct file_format	ofw_elf64 =
105{
106	ppc64_ofw_elf_loadfile,
107	ppc64_ofw_elf_exec
108};
109