ppc64_elf_freebsd.c revision 276413 
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: user/nwhitehorn/kboot/powerpc/kboot/ppc64_elf_freebsd.c 276413 2014-12-30 17:30:47Z nwhitehorn $");
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
38#include <stand.h>
39
40#include "bootstrap.h"
41
42extern char		end[];
43extern vm_offset_t	reloc;	/* From <arch>/conf.c */
44extern void		*kerneltramp;
45extern size_t		szkerneltramp;
46
47int
48ppc64_elf_loadfile(char *filename, u_int64_t dest,
49    struct preloaded_file **result)
50{
51	int	r;
52
53	r = __elfN(loadfile)(filename, dest, result);
54	if (r != 0)
55		return (r);
56
57	return (0);
58}
59
60int
61ppc64_elf_exec(struct preloaded_file *fp)
62{
63	struct file_metadata	*fmp;
64	vm_offset_t		mdp;
65	Elf_Ehdr		*e;
66	int			error;
67	uint32_t		*trampoline;
68
69	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
70		return(EFTYPE);
71	}
72	e = (Elf_Ehdr *)&fmp->md_data;
73
74	/* Handle function descriptor */
75	trampoline = malloc(szkerneltramp);
76	memcpy(trampoline, &kerneltramp, szkerneltramp);
77	trampoline[2] = e->e_entry;
78	trampoline[3] = 0; /* FDT */
79	trampoline[4] = 0; /* Phys. mem offset */
80	trampoline[5] = 0; /* OF entry point */
81
82	if ((error = md_load64(fp->f_args, &mdp)) != 0)
83		return (error);
84
85	trampoline[6] = mdp;
86	trampoline[7] = sizeof(mdp);
87	printf("Kernel entry at %#x ...\n", e->e_entry);
88
89	dev_cleanup();
90
91	archsw.arch_copyin(trampoline, 0 /* XXX */, szkerneltramp);
92	/* XXX kexec_load, reboot */
93
94	panic("exec returned");
95}
96
97struct file_format	ppc_elf64 =
98{
99	ppc64_elf_loadfile,
100	ppc64_elf_exec
101};
102