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/cdefs.h>
28 #define __ELF_WORD_SIZE 64
29
30 #include <sys/param.h>
31 #include <sys/linker.h>
32
33 #include <machine/metadata.h>
34 #include <machine/elf.h>
35 #include <machine/md_var.h>
36
37 #include <stand.h>
38
39 #include "bootstrap.h"
40 #include "libofw.h"
41 #include "openfirm.h"
42 #include "modinfo.h"
43
44 extern char end[];
45 extern vm_offset_t reloc; /* From <arch>/conf.c */
46
47 int
ppc64_ofw_elf_loadfile(char * filename,uint64_t dest,struct preloaded_file ** result)48 ppc64_ofw_elf_loadfile(char *filename, uint64_t dest,
49 struct preloaded_file **result)
50 {
51 int r;
52
53 r = __elfN(loadfile)(filename, dest, result);
54 if (r != 0)
55 return (r);
56
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 return (0);
64 }
65
66 int
ppc64_ofw_elf_exec(struct preloaded_file * fp)67 ppc64_ofw_elf_exec(struct preloaded_file *fp)
68 {
69 struct file_metadata *fmp;
70 vm_offset_t mdp, dtbp;
71 Elf_Ehdr *e;
72 int error;
73 intptr_t entry;
74
75 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
76 return(EFTYPE);
77 }
78 e = (Elf_Ehdr *)&fmp->md_data;
79
80 /* Handle function descriptor for ELFv1 kernels */
81 if ((e->e_flags & 3) == 2)
82 entry = e->e_entry;
83 else
84 entry = *(uint64_t *)(intptr_t)e->e_entry;
85
86 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0)
87 return (error);
88
89 printf("Kernel entry at 0x%x ...\n", entry);
90
91 dev_cleanup();
92
93 if (dtbp != 0) {
94 OF_quiesce();
95 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp,
96 0, 0, (void *)mdp, 0xfb5d104d);
97 } else {
98 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry,
99 (void *)mdp, 0xfb5d104d);
100 }
101
102 panic("exec returned");
103 }
104
105 struct file_format ofw_elf64 =
106 {
107 ppc64_ofw_elf_loadfile,
108 ppc64_ofw_elf_exec
109 };
110