1 /*-
2 * Copyright (c) 2001 Benno Rice <benno@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/param.h>
28 #include <sys/linker.h>
29
30 #include <machine/metadata.h>
31 #include <machine/elf.h>
32 #if defined(__powerpc__)
33 #include <machine/md_var.h>
34 #endif
35
36 #include <stand.h>
37
38 #include "bootstrap.h"
39 #include "libofw.h"
40 #include "openfirm.h"
41 #include "modinfo.h"
42
43 extern char end[];
44 extern vm_offset_t reloc; /* From <arch>/conf.c */
45
46 int
__elfN(ofw_loadfile)47 __elfN(ofw_loadfile)(char *filename, uint64_t dest,
48 struct preloaded_file **result)
49 {
50 int r;
51
52 r = __elfN(loadfile)(filename, dest, result);
53 if (r != 0)
54 return (r);
55
56 #if defined(__powerpc__)
57 /*
58 * No need to sync the icache for modules: this will
59 * be done by the kernel after relocation.
60 */
61 if (!strcmp((*result)->f_type, "elf kernel"))
62 __syncicache((void *) (*result)->f_addr, (*result)->f_size);
63 #endif
64 return (0);
65 }
66
67 int
__elfN(ofw_exec)68 __elfN(ofw_exec)(struct preloaded_file *fp)
69 {
70 struct file_metadata *fmp;
71 vm_offset_t mdp, dtbp;
72 Elf_Ehdr *e;
73 int error;
74 intptr_t entry;
75
76 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
77 return(EFTYPE);
78 }
79 e = (Elf_Ehdr *)&fmp->md_data;
80 entry = e->e_entry;
81
82 if ((error = md_load(fp->f_args, &mdp, &dtbp)) != 0)
83 return (error);
84
85 printf("Kernel entry at 0x%x ...\n", entry);
86
87 dev_cleanup();
88 if (dtbp != 0) {
89 OF_quiesce();
90 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp,
91 0, 0, (void *)mdp, 0xfb5d104d);
92 } else {
93 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry,
94 (void *)mdp, 0xfb5d104d);
95 }
96
97 panic("exec returned");
98 }
99
100 struct file_format ofw_elf =
101 {
102 __elfN(ofw_loadfile),
103 __elfN(ofw_exec)
104 };
105