1 /*-
2 * Copyright (c) 2001 Benno Rice <[email protected]>
3 * Copyright (c) 2007 Semihalf, Rafal Jaworowski <[email protected]>
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 extern int bi_load(char *, vm_offset_t *, vm_offset_t *, bool);
44
45 static int
__elfN(exec)46 __elfN(exec)(struct preloaded_file *fp)
47 {
48 struct file_metadata *fmp;
49 vm_offset_t modulep, kernend;
50 Elf_Ehdr *e;
51 int error;
52 void (*entry)(void *);
53
54 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
55 return (EFTYPE);
56
57 e = (Elf_Ehdr *)&fmp->md_data;
58
59 efi_time_fini();
60
61 entry = efi_translate(e->e_entry);
62
63 printf("Kernel entry at %p...\n", entry);
64 printf("Kernel args: %s\n", fp->f_args);
65
66 if ((error = bi_load(fp->f_args, &modulep, &kernend, true)) != 0) {
67 efi_time_init();
68 return (error);
69 }
70
71 /*
72 * At this point we've called ExitBootServices, so we can't call
73 * printf or any other function that uses Boot Services
74 */
75 dev_cleanup();
76
77 (*entry)((void *)modulep);
78 panic("exec returned");
79 }
80
81 static struct file_format riscv_elf = {
82 __elfN(loadfile),
83 __elfN(exec)
84 };
85
86 struct file_format *file_formats[] = {
87 &riscv_elf,
88 NULL
89 };
90