db8b561345
Currently, the installer uses pre-created 800KB FAT12 filesystems that it dd's onto the ESP partition. This changeset improves that by having the installer generate a FAT32 filesystem directly onto the ESP using newfs_msdos and then copying loader.efi into /EFI/freebsd. For live installs it then runs efibootmgr to add a FreeBSD boot entry in the BIOS. Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D17947
154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2011 Nathan Whitehorn
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <string.h>
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#include "partedit.h"
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/* EFI partition size in bytes */
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#define EFI_BOOTPART_SIZE (260 * 1024 * 1024)
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static const char *
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x86_bootmethod(void)
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{
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static char fw[255] = "";
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size_t len = sizeof(fw);
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int error;
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if (strlen(fw) == 0) {
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error = sysctlbyname("machdep.bootmethod", fw, &len, NULL, -1);
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if (error != 0)
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return ("BIOS");
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}
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return (fw);
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}
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const char *
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default_scheme(void)
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{
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if (strcmp(x86_bootmethod(), "UEFI") == 0)
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return ("GPT");
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else
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return ("MBR");
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}
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int
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is_scheme_bootable(const char *part_type)
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{
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if (strcmp(part_type, "GPT") == 0)
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return (1);
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if (strcmp(x86_bootmethod(), "BIOS") == 0) {
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if (strcmp(part_type, "BSD") == 0)
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return (1);
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if (strcmp(part_type, "MBR") == 0)
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return (1);
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}
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return (0);
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}
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int
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is_fs_bootable(const char *part_type, const char *fs)
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{
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if (strcmp(fs, "freebsd-ufs") == 0)
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return (1);
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if (strcmp(fs, "freebsd-zfs") == 0 &&
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strcmp(part_type, "GPT") == 0 &&
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strcmp(x86_bootmethod(), "BIOS") == 0)
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return (1);
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return (0);
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}
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size_t
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bootpart_size(const char *scheme)
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{
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/* No partcode except for GPT */
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if (strcmp(scheme, "GPT") != 0)
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return (0);
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if (strcmp(x86_bootmethod(), "BIOS") == 0)
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return (512*1024);
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else
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return (EFI_BOOTPART_SIZE);
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return (0);
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}
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const char *
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bootpart_type(const char *scheme, const char **mountpoint)
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{
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if (strcmp(x86_bootmethod(), "UEFI") == 0)
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return ("efi");
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return ("freebsd-boot");
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}
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const char *
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bootcode_path(const char *part_type)
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{
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if (strcmp(x86_bootmethod(), "UEFI") == 0)
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return (NULL);
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if (strcmp(part_type, "GPT") == 0)
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return ("/boot/pmbr");
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if (strcmp(part_type, "MBR") == 0)
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return ("/boot/mbr");
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if (strcmp(part_type, "BSD") == 0)
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return ("/boot/boot");
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return (NULL);
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}
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const char *
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partcode_path(const char *part_type, const char *fs_type)
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{
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if (strcmp(part_type, "GPT") == 0 && strcmp(x86_bootmethod(), "UEFI") != 0) {
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if (strcmp(fs_type, "zfs") == 0)
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return ("/boot/gptzfsboot");
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else
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return ("/boot/gptboot");
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}
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/* No partcode except for non-UEFI GPT */
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return (NULL);
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}
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