freebsd-nq/sys/boot/efi/include/efilib.h
Marcel Moolenaar 716f79c093 Remove file system support based on the simple file system protocol
as this only allows us to access file systems that EFI knows about.
With a loader that can only use EFI-supported file systems, we're
forced to put /boot on the EFI system partition. This is suboptimal
in the following ways:
1.  With /boot a symlink to /efi/boot, mergemaster complains about
    the mismatch and there's no quick solution.
2.  The EFI loader can only boot a single version of FreeBSD. There's
    no way to install multiple versions of FreeBSD and select one
    at the loader prompt.
3.  ZFS maintains /boot/zfs/zpool.cache and with /boot a symlink we
    end up with the file on a MSDOS file system. ZFS does not have
    proper handling of file systems that are under Giant.

Implement a disk device based on the block I/O protocol instead and
pull in file system code from libstand. The disk devices are really
the partitions that EFI knows about.

This change is backward compatible.

MFC after:	1 week
2010-01-09 22:54:29 +00:00

53 lines
2.0 KiB
C

/*-
* Copyright (c) 2000 Doug Rabson
* Copyright (c) 2006 Marcel Moolenaar
* 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.
*
* $FreeBSD$
*/
#include <stand.h>
extern EFI_HANDLE IH;
extern EFI_SYSTEM_TABLE *ST;
extern EFI_BOOT_SERVICES *BS;
extern EFI_RUNTIME_SERVICES *RS;
extern struct devsw efipart_dev;
extern struct devsw efinet_dev;
extern struct netif_driver efinetif;
void *efi_get_table(EFI_GUID *tbl);
void efi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *system_table);
int efi_register_handles(struct devsw *, EFI_HANDLE *, int);
EFI_HANDLE efi_find_handle(struct devsw *, int);
int efi_handle_lookup(EFI_HANDLE, struct devsw **, int *);
int efi_status_to_errno(EFI_STATUS);
time_t efi_time(EFI_TIME *);
EFI_STATUS main(int argc, CHAR16 *argv[]);
void exit(EFI_STATUS status);