2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/linker.h>
34 #include <i386/include/bootinfo.h>
35 #include <i386/include/elf.h>
38 #include "bootstrap.h"
39 #include "libuserboot.h"
41 static int elf32_exec(struct preloaded_file *amp);
42 static int elf32_obj_exec(struct preloaded_file *amp);
44 struct file_format i386_elf = { elf32_loadfile, elf32_exec };
45 struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec };
48 * There is an ELF kernel and one or more ELF modules loaded.
49 * We wish to start executing the kernel image, so make such
50 * preparations as are required, and do so.
53 elf32_exec(struct preloaded_file *fp)
55 struct file_metadata *md;
57 vm_offset_t entry, bootinfop, modulep, kernend;
58 int boothowto, err, bootdev;
62 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
64 ehdr = (Elf_Ehdr *)&(md->md_data);
66 err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
69 entry = ehdr->e_entry & 0xffffff;
72 printf("Start @ 0x%lx ...\n", entry);
78 * Build a scratch stack at physical 0x1000
88 CALLBACK(copyin, stack, 0x1000, sizeof(stack));
89 CALLBACK(setreg, 4, 0x1000);
90 CALLBACK(exec, entry);
92 panic("exec returned");
96 elf32_obj_exec(struct preloaded_file *fp)