1*ca987d46SWarner Losh /*-
2*ca987d46SWarner Losh * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3*ca987d46SWarner Losh * All rights reserved.
4*ca987d46SWarner Losh *
5*ca987d46SWarner Losh * Redistribution and use in source and binary forms, with or without
6*ca987d46SWarner Losh * modification, are permitted provided that the following conditions
7*ca987d46SWarner Losh * are met:
8*ca987d46SWarner Losh * 1. Redistributions of source code must retain the above copyright
9*ca987d46SWarner Losh * notice, this list of conditions and the following disclaimer.
10*ca987d46SWarner Losh * 2. Redistributions in binary form must reproduce the above copyright
11*ca987d46SWarner Losh * notice, this list of conditions and the following disclaimer in the
12*ca987d46SWarner Losh * documentation and/or other materials provided with the distribution.
13*ca987d46SWarner Losh *
14*ca987d46SWarner Losh * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*ca987d46SWarner Losh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*ca987d46SWarner Losh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*ca987d46SWarner Losh * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*ca987d46SWarner Losh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*ca987d46SWarner Losh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*ca987d46SWarner Losh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*ca987d46SWarner Losh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*ca987d46SWarner Losh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*ca987d46SWarner Losh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*ca987d46SWarner Losh * SUCH DAMAGE.
25*ca987d46SWarner Losh */
26*ca987d46SWarner Losh
27*ca987d46SWarner Losh #include <sys/param.h>
28*ca987d46SWarner Losh #include <sys/exec.h>
29*ca987d46SWarner Losh #include <sys/linker.h>
30*ca987d46SWarner Losh #include <string.h>
31*ca987d46SWarner Losh #include <machine/bootinfo.h>
32*ca987d46SWarner Losh #include <machine/elf.h>
33*ca987d46SWarner Losh #include <stand.h>
34*ca987d46SWarner Losh
35*ca987d46SWarner Losh #include "bootstrap.h"
36*ca987d46SWarner Losh #include "libi386.h"
37*ca987d46SWarner Losh #include "btxv86.h"
38*ca987d46SWarner Losh
39*ca987d46SWarner Losh static int elf32_exec(struct preloaded_file *amp);
40*ca987d46SWarner Losh static int elf32_obj_exec(struct preloaded_file *amp);
41*ca987d46SWarner Losh
42*ca987d46SWarner Losh struct file_format i386_elf = { elf32_loadfile, elf32_exec };
43*ca987d46SWarner Losh struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec };
44*ca987d46SWarner Losh
45*ca987d46SWarner Losh /*
46*ca987d46SWarner Losh * There is an ELF kernel and one or more ELF modules loaded.
47*ca987d46SWarner Losh * We wish to start executing the kernel image, so make such
48*ca987d46SWarner Losh * preparations as are required, and do so.
49*ca987d46SWarner Losh */
50*ca987d46SWarner Losh static int
elf32_exec(struct preloaded_file * fp)51*ca987d46SWarner Losh elf32_exec(struct preloaded_file *fp)
52*ca987d46SWarner Losh {
53*ca987d46SWarner Losh struct file_metadata *md;
54*ca987d46SWarner Losh Elf_Ehdr *ehdr;
55*ca987d46SWarner Losh vm_offset_t entry, bootinfop, modulep, kernend;
56*ca987d46SWarner Losh int boothowto, err, bootdev;
57*ca987d46SWarner Losh
58*ca987d46SWarner Losh if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
59*ca987d46SWarner Losh return(EFTYPE);
60*ca987d46SWarner Losh ehdr = (Elf_Ehdr *)&(md->md_data);
61*ca987d46SWarner Losh
62*ca987d46SWarner Losh err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
63*ca987d46SWarner Losh if (err != 0)
64*ca987d46SWarner Losh return(err);
65*ca987d46SWarner Losh entry = ehdr->e_entry & 0xffffff;
66*ca987d46SWarner Losh
67*ca987d46SWarner Losh #ifdef DEBUG
68*ca987d46SWarner Losh printf("Start @ 0x%lx ...\n", entry);
69*ca987d46SWarner Losh #endif
70*ca987d46SWarner Losh
71*ca987d46SWarner Losh dev_cleanup();
72*ca987d46SWarner Losh __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);
73*ca987d46SWarner Losh
74*ca987d46SWarner Losh panic("exec returned");
75*ca987d46SWarner Losh }
76*ca987d46SWarner Losh
77*ca987d46SWarner Losh static int
elf32_obj_exec(struct preloaded_file * fp)78*ca987d46SWarner Losh elf32_obj_exec(struct preloaded_file *fp)
79*ca987d46SWarner Losh {
80*ca987d46SWarner Losh return (EFTYPE);
81*ca987d46SWarner Losh }
82