1/*
2 * Copyright (c) 2014 Oracle Co., Daniel Kiper
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program.  If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include <linux/bitops.h>
19#include <linux/efi.h>
20#include <linux/init.h>
21#include <linux/string.h>
22
23#include <xen/xen-ops.h>
24
25#include <asm/page.h>
26#include <asm/setup.h>
27
28void __init xen_efi_init(void)
29{
30	efi_system_table_t *efi_systab_xen;
31
32	efi_systab_xen = xen_efi_probe();
33
34	if (efi_systab_xen == NULL)
35		return;
36
37	strncpy((char *)&boot_params.efi_info.efi_loader_signature, "Xen",
38			sizeof(boot_params.efi_info.efi_loader_signature));
39	boot_params.efi_info.efi_systab = (__u32)__pa(efi_systab_xen);
40	boot_params.efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32);
41
42	set_bit(EFI_BOOT, &efi.flags);
43	set_bit(EFI_PARAVIRT, &efi.flags);
44	set_bit(EFI_64BIT, &efi.flags);
45}
46