2 * Copyright (c) 2011 Nathan Whitehorn
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/types.h>
30 #include <sys/sysctl.h>
35 static char platform[255] = "";
36 static const char *platform_sysctl = "machdep.bootmethod";
39 default_scheme(void) {
44 is_scheme_bootable(const char *part_type) {
45 size_t platlen = sizeof(platform);
46 if (strlen(platform) == 0)
47 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
49 if (strcmp(part_type, "GPT") == 0)
51 if (strcmp(platform, "BIOS") == 0) {
52 if (strcmp(part_type, "BSD") == 0)
54 if (strcmp(part_type, "MBR") == 0)
62 bootpart_size(const char *scheme) {
63 size_t platlen = sizeof(platform);
64 if (strlen(platform) == 0)
65 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
67 /* No partcode except for GPT */
68 if (strcmp(scheme, "GPT") != 0)
71 if (strcmp(platform, "BIOS") == 0)
80 bootpart_type(const char *scheme) {
81 size_t platlen = sizeof(platform);
82 if (strlen(platform) == 0)
83 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
85 if (strcmp(platform, "UEFI") == 0)
88 return ("freebsd-boot");
92 bootcode_path(const char *part_type) {
93 size_t platlen = sizeof(platform);
94 if (strlen(platform) == 0)
95 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
96 if (strcmp(platform, "UEFI") == 0)
99 if (strcmp(part_type, "GPT") == 0)
100 return ("/boot/pmbr");
101 if (strcmp(part_type, "MBR") == 0)
102 return ("/boot/mbr");
103 if (strcmp(part_type, "BSD") == 0)
104 return ("/boot/boot");
110 partcode_path(const char *part_type) {
111 size_t platlen = sizeof(platform);
112 if (strlen(platform) == 0)
113 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
115 if (strcmp(part_type, "GPT") == 0) {
116 if (strcmp(platform, "UEFI") == 0)
117 return ("/boot/boot1.efifat");
119 return ("/boot/gptboot");
122 /* No partcode except for GPT */