1 /*-
2 * Copyright (c) 1998 Michael Smith <msmith@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 #include <sys/param.h>
31 #include <sys/exec.h>
32 #include <sys/linker.h>
33 #include <string.h>
34 #include <machine/bootinfo.h>
35 #include <machine/elf.h>
36 #include <stand.h>
37
38 #include "bootstrap.h"
39 #include "../libi386/libi386.h"
40 #include "../btx/lib/btxv86.h"
41
42 extern void __exec(caddr_t addr, ...);
43
44
45 static int elf32_exec(struct preloaded_file *amp);
46 static int elf32_obj_exec(struct preloaded_file *amp);
47
48 struct file_format i386_elf = { elf32_loadfile, elf32_exec };
49 struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec };
50
51 struct file_format *file_formats[] = {
52 &i386_elf,
53 &i386_elf_obj,
54 NULL
55 };
56
57 /*
58 * There is an ELF kernel and one or more ELF modules loaded.
59 * We wish to start executing the kernel image, so make such
60 * preparations as are required, and do so.
61 */
62 static int
elf32_exec(struct preloaded_file * fp)63 elf32_exec(struct preloaded_file *fp)
64 {
65 struct file_metadata *md;
66 Elf_Ehdr *ehdr;
67 vm_offset_t entry, bootinfop, modulep, kernend;
68 int boothowto, err, bootdev;
69
70 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
71 return(EFTYPE);
72 ehdr = (Elf_Ehdr *)&(md->md_data);
73
74 efi_time_fini();
75 err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
76 if (err != 0) {
77 efi_time_init();
78 return(err);
79 }
80 entry = ehdr->e_entry & 0xffffff;
81
82 printf("Start @ 0x%lx ...\n", entry);
83
84 ldr_enter(fp->f_name);
85
86 dev_cleanup();
87 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);
88
89 panic("exec returned");
90 }
91
92 static int
elf32_obj_exec(struct preloaded_file * fp)93 elf32_obj_exec(struct preloaded_file *fp)
94 {
95 return (EFTYPE);
96 }
97