1 /*-
2 * Copyright (c) 2013 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * This software was developed by SRI International and the University of
6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
7 * ("CTSRD"), as part of the DARPA CRASH research programme.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 #include <sys/param.h>
35
36 #include <machine/elf.h>
37
38 #include <stand.h>
39 #include <bootstrap.h>
40 #include <loader.h>
41 #include <mips.h>
42
43 static int beri_arch_autoload(void);
44 static ssize_t beri_arch_copyin(const void *src, vm_offset_t va, size_t len);
45 static ssize_t beri_arch_copyout(vm_offset_t va, void *dst, size_t len);
46 static uint64_t beri_arch_loadaddr(u_int type, void *data, uint64_t addr);
47 static ssize_t beri_arch_readin(int fd, vm_offset_t va, size_t len);
48
49 struct arch_switch archsw = {
50 .arch_autoload = beri_arch_autoload,
51 .arch_getdev = beri_arch_getdev,
52 .arch_copyin = beri_arch_copyin,
53 .arch_copyout = beri_arch_copyout,
54 .arch_loadaddr = beri_arch_loadaddr,
55 .arch_readin = beri_arch_readin,
56
57 };
58
59 static int
beri_arch_autoload(void)60 beri_arch_autoload(void)
61 {
62
63 return (0);
64 }
65
66 static ssize_t
beri_arch_copyin(const void * src,vm_offset_t va,size_t len)67 beri_arch_copyin(const void *src, vm_offset_t va, size_t len)
68 {
69
70 memcpy((void *)va, src, len);
71 return (len);
72 }
73
74 static ssize_t
beri_arch_copyout(vm_offset_t va,void * dst,size_t len)75 beri_arch_copyout(vm_offset_t va, void *dst, size_t len)
76 {
77
78 memcpy(dst, (void *)va, len);
79 return (len);
80 }
81
82 static uint64_t
beri_arch_loadaddr(u_int type,void * data,uint64_t addr)83 beri_arch_loadaddr(u_int type, void *data, uint64_t addr)
84 {
85 uint64_t align;
86
87 /* Align ELF objects at page boundaries; others at cache lines. */
88 align = (type == LOAD_ELF) ? PAGE_SIZE : CACHE_LINE_SIZE;
89 return ((addr + align - 1) & ~(align - 1));
90 }
91
92 static ssize_t
beri_arch_readin(int fd,vm_offset_t va,size_t len)93 beri_arch_readin(int fd, vm_offset_t va, size_t len)
94 {
95
96 return (read(fd, (void *)va, len));
97 }
98