iPXE
efi_reboot.c
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00001 /*
00002  * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301, USA.
00018  *
00019  * You can also choose to distribute this program under the terms of
00020  * the Unmodified Binary Distribution Licence (as given in the file
00021  * COPYING.UBDL), provided that you have satisfied its requirements.
00022  */
00023 
00024 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
00025 
00026 /**
00027  * @file
00028  *
00029  * EFI reboot mechanism
00030  *
00031  */
00032 
00033 #include <errno.h>
00034 #include <ipxe/efi/efi.h>
00035 #include <ipxe/reboot.h>
00036 
00037 /**
00038  * Reboot system
00039  *
00040  * @v warm              Perform a warm reboot
00041  */
00042 static void efi_reboot ( int warm ) {
00043         EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
00044 
00045         /* Use runtime services to reset system */
00046         rs->ResetSystem ( ( warm ? EfiResetWarm : EfiResetCold ), 0, 0, NULL );
00047 }
00048 
00049 /**
00050  * Power off system
00051  *
00052  * @ret rc              Return status code
00053  */
00054 static int efi_poweroff ( void ) {
00055         EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
00056 
00057         /* Use runtime services to power off system */
00058         rs->ResetSystem ( EfiResetShutdown, 0, 0, NULL );
00059 
00060         /* Should never happen */
00061         return -ECANCELED;
00062 }
00063 
00064 PROVIDE_REBOOT ( efi, reboot, efi_reboot );
00065 PROVIDE_REBOOT ( efi, poweroff, efi_poweroff );