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 /* EFI partition size in bytes */
36 #define EFI_BOOTPART_SIZE (200 * 1024 * 1024)
37 #define EFI_BOOTPART_PATH "/boot/boot1.efifat"
42 static char fw[255] = "";
43 size_t len = sizeof(fw);
46 if (strlen(fw) == 0) {
47 error = sysctlbyname("machdep.bootmethod", fw, &len, NULL, -1);
62 is_scheme_bootable(const char *part_type)
65 if (strcmp(part_type, "GPT") == 0)
67 if (strcmp(x86_bootmethod(), "BIOS") == 0) {
68 if (strcmp(part_type, "BSD") == 0)
70 if (strcmp(part_type, "MBR") == 0)
78 is_fs_bootable(const char *part_type, const char *fs)
81 if (strcmp(fs, "freebsd-ufs") == 0)
84 if (strcmp(fs, "freebsd-zfs") == 0 &&
85 strcmp(part_type, "GPT") == 0 &&
86 strcmp(x86_bootmethod(), "BIOS") == 0)
93 bootpart_size(const char *scheme)
96 /* No partcode except for GPT */
97 if (strcmp(scheme, "GPT") != 0)
100 if (strcmp(x86_bootmethod(), "BIOS") == 0)
103 return (EFI_BOOTPART_SIZE);
109 bootpart_type(const char *scheme)
112 if (strcmp(x86_bootmethod(), "UEFI") == 0)
115 return ("freebsd-boot");
119 bootcode_path(const char *part_type)
122 if (strcmp(x86_bootmethod(), "UEFI") == 0)
125 if (strcmp(part_type, "GPT") == 0)
126 return ("/boot/pmbr");
127 if (strcmp(part_type, "MBR") == 0)
128 return ("/boot/mbr");
129 if (strcmp(part_type, "BSD") == 0)
130 return ("/boot/boot");
136 partcode_path(const char *part_type, const char *fs_type)
139 if (strcmp(part_type, "GPT") == 0) {
140 if (strcmp(x86_bootmethod(), "UEFI") == 0)
141 return (EFI_BOOTPART_PATH);
142 else if (strcmp(fs_type, "zfs") == 0)
143 return ("/boot/gptzfsboot");
145 return ("/boot/gptboot");
148 /* No partcode except for GPT */