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 "libuboot.h"
40 #include "modinfo.h"
41
42 int
ppc64_uboot_elf_loadfile(char * filename,uint64_t dest,struct preloaded_file ** result)43 ppc64_uboot_elf_loadfile(char *filename, uint64_t dest,
44 struct preloaded_file **result)
45 {
46 int r;
47
48 r = __elfN(loadfile)(filename, dest, result);
49 if (r != 0)
50 return (r);
51
52 /*
53 * No need to sync the icache for modules: this will
54 * be done by the kernel after relocation.
55 */
56 if (!strcmp((*result)->f_type, md_kerntype))
57 __syncicache((void *) (*result)->f_addr, (*result)->f_size);
58 return (0);
59 }
60
61 int
ppc64_uboot_elf_exec(struct preloaded_file * fp)62 ppc64_uboot_elf_exec(struct preloaded_file *fp)
63 {
64 struct file_metadata *fmp;
65 vm_offset_t mdp, dtbp;
66 Elf_Ehdr *e;
67 int error;
68 void (*entry)(void *);
69
70 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
71 return(EFTYPE);
72 }
73 e = (Elf_Ehdr *)&fmp->md_data;
74
75 /* Handle function descriptor for ELFv1 kernels */
76 if ((e->e_flags & 3) == 2)
77 entry = (void (*)(void*))(intptr_t)e->e_entry;
78 else
79 entry = *(void (*)(void*))(uint64_t *)(intptr_t)e->e_entry;
80
81 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0)
82 return (error);
83
84 dev_cleanup();
85 printf("Kernel args: %s\n", fp->f_args);
86
87 (*entry)((void *)mdp);
88 panic("exec returned");
89 }
90
91 struct file_format uboot_elf64 =
92 {
93 ppc64_uboot_elf_loadfile,
94 ppc64_uboot_elf_exec
95 };
96