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/param.h>
29 #include <sys/linker.h>
30
31 #include <machine/md_var.h>
32 #include <machine/metadata.h>
33 #include <machine/elf.h>
34
35 #include <stand.h>
36
37 #include <efi.h>
38 #include <efilib.h>
39
40 #include "bootstrap.h"
41 #include "loader_efi.h"
42
43 static int
__elfN(exec)44 __elfN(exec)(struct preloaded_file *fp)
45 {
46 struct file_metadata *fmp;
47 vm_offset_t modulep, kernend;
48 Elf_Ehdr *e;
49 int error;
50 void (*entry)(void *);
51
52 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
53 return (EFTYPE);
54
55 e = (Elf_Ehdr *)&fmp->md_data;
56
57 efi_time_fini();
58
59 entry = efi_translate(e->e_entry);
60
61 printf("Kernel entry at %p...\n", entry);
62 printf("Kernel args: %s\n", fp->f_args);
63
64 if ((error = bi_load(fp->f_args, &modulep, &kernend, true)) != 0) {
65 efi_time_init();
66 return (error);
67 }
68
69 /*
70 * At this point we've called ExitBootServices, so we can't call
71 * printf or any other function that uses Boot Services
72 */
73 dev_cleanup();
74
75 (*entry)((void *)modulep);
76 panic("exec returned");
77 }
78
79 static struct file_format riscv_elf = {
80 __elfN(loadfile),
81 __elfN(exec)
82 };
83
84 struct file_format *file_formats[] = {
85 &riscv_elf,
86 NULL
87 };
88