exec.c revision 332154 
1/*-
2 * Copyright (c) 2001 Benno Rice <benno@FreeBSD.org>
3 * Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: stable/11/stand/efi/loader/arch/arm/exec.c 332154 2018-04-06 21:37:25Z kevans $");
30
31#include <sys/param.h>
32#include <sys/linker.h>
33
34#include <machine/md_var.h>
35#include <machine/metadata.h>
36#include <machine/elf.h>
37
38#include <stand.h>
39
40#include <efi.h>
41#include <efilib.h>
42
43#include "bootstrap.h"
44#include "loader_efi.h"
45
46extern vm_offset_t md_load(char *, vm_offset_t *);
47extern int bi_load(char *, vm_offset_t *, vm_offset_t *);
48
49static int
50__elfN(arm_load)(char *filename, uint64_t dest,
51    struct preloaded_file **result)
52{
53	int r;
54
55	r = __elfN(loadfile)(filename, dest, result);
56	if (r != 0)
57		return (r);
58
59	return (0);
60}
61
62static int
63__elfN(arm_exec)(struct preloaded_file *fp)
64{
65	struct file_metadata *fmp;
66	vm_offset_t modulep, kernend;
67	Elf_Ehdr *e;
68	int error;
69	void (*entry)(void *);
70
71	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
72		return (EFTYPE);
73
74	e = (Elf_Ehdr *)&fmp->md_data;
75
76	efi_time_fini();
77	if ((error = bi_load(fp->f_args, &modulep, &kernend)) != 0) {
78		efi_time_init();
79		return (error);
80	}
81
82	entry = efi_translate(e->e_entry);
83	printf("Kernel entry at 0x%x...\n", (unsigned)entry);
84	printf("Kernel args: %s\n", fp->f_args);
85	printf("modulep: %#x\n", modulep);
86	printf("relocation_offset %llx\n", __elfN(relocation_offset));
87
88	dev_cleanup();
89
90	(*entry)((void *)modulep);
91	panic("exec returned");
92}
93
94static struct file_format arm_elf = {
95	__elfN(arm_load),
96	__elfN(arm_exec)
97};
98
99struct file_format *file_formats[] = {
100	&arm_elf,
101	NULL
102};
103
104