diff options
Diffstat (limited to 'usr.sbin/bsdinstall/partedit/partedit_x86.c')
| -rw-r--r-- | usr.sbin/bsdinstall/partedit/partedit_x86.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/usr.sbin/bsdinstall/partedit/partedit_x86.c b/usr.sbin/bsdinstall/partedit/partedit_x86.c new file mode 100644 index 000000000000..6a536271c25e --- /dev/null +++ b/usr.sbin/bsdinstall/partedit/partedit_x86.c @@ -0,0 +1,153 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2011 Nathan Whitehorn + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/sysctl.h> +#include <string.h> + +#include "partedit.h" + +/* EFI partition size in bytes */ +#define EFI_BOOTPART_SIZE (260 * 1024 * 1024) + +static const char * +x86_bootmethod(void) +{ + static char fw[255] = ""; + size_t len = sizeof(fw); + int error; + + if (strlen(fw) == 0) { + error = sysctlbyname("machdep.bootmethod", fw, &len, NULL, -1); + if (error != 0) + return ("BIOS"); + } + + return (fw); +} + +const char * +default_scheme(void) +{ + if (strcmp(x86_bootmethod(), "UEFI") == 0) + return ("GPT"); + else + return ("MBR"); +} + +int +is_scheme_bootable(const char *part_type) +{ + + if (strcmp(part_type, "GPT") == 0) + return (1); + if (strcmp(x86_bootmethod(), "BIOS") == 0) { + if (strcmp(part_type, "BSD") == 0) + return (1); + if (strcmp(part_type, "MBR") == 0) + return (1); + } + + return (0); +} + +int +is_fs_bootable(const char *part_type, const char *fs) +{ + + if (strcmp(fs, "freebsd-ufs") == 0) + return (1); + + if (strcmp(fs, "freebsd-zfs") == 0 && + strcmp(part_type, "GPT") == 0 && + strcmp(x86_bootmethod(), "BIOS") == 0) + return (1); + + return (0); +} + +size_t +bootpart_size(const char *scheme) +{ + + /* No partcode except for GPT */ + if (strcmp(scheme, "GPT") != 0) + return (0); + + if (strcmp(x86_bootmethod(), "BIOS") == 0) + return (512*1024); + else + return (EFI_BOOTPART_SIZE); + + return (0); +} + +const char * +bootpart_type(const char *scheme, const char **mountpoint) +{ + + if (strcmp(x86_bootmethod(), "UEFI") == 0) { + *mountpoint = "/boot/efi"; + return ("efi"); + } + + return ("freebsd-boot"); +} + +const char * +bootcode_path(const char *part_type) +{ + + if (strcmp(x86_bootmethod(), "UEFI") == 0) + return (NULL); + + if (strcmp(part_type, "GPT") == 0) + return ("/boot/pmbr"); + if (strcmp(part_type, "MBR") == 0) + return ("/boot/mbr"); + if (strcmp(part_type, "BSD") == 0) + return ("/boot/boot"); + + return (NULL); +} + +const char * +partcode_path(const char *part_type, const char *fs_type) +{ + + if (strcmp(part_type, "GPT") == 0 && strcmp(x86_bootmethod(), "UEFI") != 0) { + if (strcmp(fs_type, "zfs") == 0) + return ("/boot/gptzfsboot"); + else + return ("/boot/gptboot"); + } + + /* No partcode except for non-UEFI GPT */ + return (NULL); +} + |