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 #define __ELF_WORD_SIZE 64
28
29 #include <sys/param.h>
30 #include <sys/linker.h>
31
32 #include <machine/metadata.h>
33 #include <machine/elf.h>
34 #include <machine/md_var.h>
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
ppc64_ofw_elf_loadfile(char * filename,uint64_t dest,struct preloaded_file ** result)47 ppc64_ofw_elf_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 /*
57 * No need to sync the icache for modules: this will
58 * be done by the kernel after relocation.
59 */
60 if (!strcmp((*result)->f_type, md_kerntype))
61 __syncicache((void *) (*result)->f_addr, (*result)->f_size);
62 return (0);
63 }
64
65 int
ppc64_ofw_elf_exec(struct preloaded_file * fp)66 ppc64_ofw_elf_exec(struct preloaded_file *fp)
67 {
68 struct file_metadata *fmp;
69 vm_offset_t mdp, dtbp;
70 Elf_Ehdr *e;
71 int error;
72 intptr_t entry;
73
74 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
75 return(EFTYPE);
76 }
77 e = (Elf_Ehdr *)&fmp->md_data;
78
79 /* Handle function descriptor for ELFv1 kernels */
80 if ((e->e_flags & 3) == 2)
81 entry = e->e_entry;
82 else
83 entry = *(uint64_t *)(intptr_t)e->e_entry;
84
85 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0)
86 return (error);
87
88 printf("Kernel entry at 0x%x ...\n", entry);
89
90 dev_cleanup();
91
92 if (dtbp != 0) {
93 OF_quiesce();
94 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp,
95 0, 0, (void *)mdp, 0xfb5d104d);
96 } else {
97 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry,
98 (void *)mdp, 0xfb5d104d);
99 }
100
101 panic("exec returned");
102 }
103
104 struct file_format ofw_elf64 =
105 {
106 ppc64_ofw_elf_loadfile,
107 ppc64_ofw_elf_exec
108 };
109