xref: /linux/arch/x86/xen/efi.c (revision c7341d6a61c3526631a4e4565cda72cb1f51d146)
1*c7341d6aSDaniel Kiper /*
2*c7341d6aSDaniel Kiper  * Copyright (c) 2014 Oracle Co., Daniel Kiper
3*c7341d6aSDaniel Kiper  *
4*c7341d6aSDaniel Kiper  * This program is free software; you can redistribute it and/or modify
5*c7341d6aSDaniel Kiper  * it under the terms of the GNU General Public License as published by
6*c7341d6aSDaniel Kiper  * the Free Software Foundation; either version 2 of the License, or
7*c7341d6aSDaniel Kiper  * (at your option) any later version.
8*c7341d6aSDaniel Kiper  *
9*c7341d6aSDaniel Kiper  * This program is distributed in the hope that it will be useful,
10*c7341d6aSDaniel Kiper  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11*c7341d6aSDaniel Kiper  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12*c7341d6aSDaniel Kiper  * GNU General Public License for more details.
13*c7341d6aSDaniel Kiper  *
14*c7341d6aSDaniel Kiper  * You should have received a copy of the GNU General Public License along
15*c7341d6aSDaniel Kiper  * with this program.  If not, see <http://www.gnu.org/licenses/>.
16*c7341d6aSDaniel Kiper  */
17*c7341d6aSDaniel Kiper 
18*c7341d6aSDaniel Kiper #include <linux/efi.h>
19*c7341d6aSDaniel Kiper #include <linux/init.h>
20*c7341d6aSDaniel Kiper #include <linux/string.h>
21*c7341d6aSDaniel Kiper 
22*c7341d6aSDaniel Kiper #include <xen/xen-ops.h>
23*c7341d6aSDaniel Kiper 
24*c7341d6aSDaniel Kiper #include <asm/setup.h>
25*c7341d6aSDaniel Kiper 
26*c7341d6aSDaniel Kiper void __init xen_efi_init(void)
27*c7341d6aSDaniel Kiper {
28*c7341d6aSDaniel Kiper 	efi_system_table_t *efi_systab_xen;
29*c7341d6aSDaniel Kiper 
30*c7341d6aSDaniel Kiper 	efi_systab_xen = xen_efi_probe();
31*c7341d6aSDaniel Kiper 
32*c7341d6aSDaniel Kiper 	if (efi_systab_xen == NULL)
33*c7341d6aSDaniel Kiper 		return;
34*c7341d6aSDaniel Kiper 
35*c7341d6aSDaniel Kiper 	strncpy((char *)&boot_params.efi_info.efi_loader_signature, "Xen",
36*c7341d6aSDaniel Kiper 			sizeof(boot_params.efi_info.efi_loader_signature));
37*c7341d6aSDaniel Kiper 	boot_params.efi_info.efi_systab = (__u32)__pa(efi_systab_xen);
38*c7341d6aSDaniel Kiper 	boot_params.efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32);
39*c7341d6aSDaniel Kiper 
40*c7341d6aSDaniel Kiper 	set_bit(EFI_BOOT, &efi.flags);
41*c7341d6aSDaniel Kiper 	set_bit(EFI_PARAVIRT, &efi.flags);
42*c7341d6aSDaniel Kiper 	set_bit(EFI_64BIT, &efi.flags);
43*c7341d6aSDaniel Kiper }
44