[linux-2.6-block.git] / drivers / xen / efi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * EFI support for Xen.
 *
 * Copyright (C) 1999 VA Linux Systems
 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
 * Copyright (C) 1999-2002 Hewlett-Packard Co.
 *	David Mosberger-Tang <davidm@hpl.hp.com>
 *	Stephane Eranian <eranian@hpl.hp.com>
 * Copyright (C) 2005-2008 Intel Co.
 *	Fenghua Yu <fenghua.yu@intel.com>
 *	Bibo Mao <bibo.mao@intel.com>
 *	Chandramouli Narayanan <mouli@linux.intel.com>
 *	Huang Ying <ying.huang@intel.com>
 * Copyright (C) 2011 Novell Co.
 *	Jan Beulich <JBeulich@suse.com>
 * Copyright (C) 2011-2012 Oracle Co.
 *	Liang Tang <liang.tang@oracle.com>
 * Copyright (c) 2014 Oracle Co., Daniel Kiper
 */

#include <linux/bug.h>
#include <linux/efi.h>
#include <linux/init.h>
#include <linux/string.h>

#include <xen/interface/xen.h>
#include <xen/interface/platform.h>
#include <xen/xen.h>
#include <xen/xen-ops.h>

#include <asm/page.h>

#include <asm/xen/hypercall.h>

#define INIT_EFI_OP(name) \
	{.cmd = XENPF_efi_runtime_call, \
	 .u.efi_runtime_call.function = XEN_EFI_##name, \
	 .u.efi_runtime_call.misc = 0}

#define efi_data(op)	(op.u.efi_runtime_call)

static efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
{
	struct xen_platform_op op = INIT_EFI_OP(get_time);

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	if (tm) {
		BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_time.time));
		memcpy(tm, &efi_data(op).u.get_time.time, sizeof(*tm));
	}

	if (tc) {
		tc->resolution = efi_data(op).u.get_time.resolution;
		tc->accuracy = efi_data(op).u.get_time.accuracy;
		tc->sets_to_zero = !!(efi_data(op).misc &
				      XEN_EFI_GET_TIME_SET_CLEARS_NS);
	}

	return efi_data(op).status;
}

static efi_status_t xen_efi_set_time(efi_time_t *tm)
{
	struct xen_platform_op op = INIT_EFI_OP(set_time);

	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_time));
	memcpy(&efi_data(op).u.set_time, tm, sizeof(*tm));

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	return efi_data(op).status;
}

static efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled,
					    efi_bool_t *pending,
					    efi_time_t *tm)
{
	struct xen_platform_op op = INIT_EFI_OP(get_wakeup_time);

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	if (tm) {
		BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_wakeup_time));
		memcpy(tm, &efi_data(op).u.get_wakeup_time, sizeof(*tm));
	}

	if (enabled)
		*enabled = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_ENABLED);

	if (pending)
		*pending = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_PENDING);

	return efi_data(op).status;
}

static efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
{
	struct xen_platform_op op = INIT_EFI_OP(set_wakeup_time);

	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_wakeup_time));
	if (enabled)
		efi_data(op).misc = XEN_EFI_SET_WAKEUP_TIME_ENABLE;
	if (tm)
		memcpy(&efi_data(op).u.set_wakeup_time, tm, sizeof(*tm));
	else
		efi_data(op).misc |= XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY;

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	return efi_data(op).status;
}

static efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
					 u32 *attr, unsigned long *data_size,
					 void *data)
{
	struct xen_platform_op op = INIT_EFI_OP(get_variable);

	set_xen_guest_handle(efi_data(op).u.get_variable.name, name);
	BUILD_BUG_ON(sizeof(*vendor) !=
		     sizeof(efi_data(op).u.get_variable.vendor_guid));
	memcpy(&efi_data(op).u.get_variable.vendor_guid, vendor, sizeof(*vendor));
	efi_data(op).u.get_variable.size = *data_size;
	set_xen_guest_handle(efi_data(op).u.get_variable.data, data);

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	*data_size = efi_data(op).u.get_variable.size;
	if (attr)
		*attr = efi_data(op).misc;

	return efi_data(op).status;
}

static efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
					      efi_char16_t *name,
					      efi_guid_t *vendor)
{
	struct xen_platform_op op = INIT_EFI_OP(get_next_variable_name);

	efi_data(op).u.get_next_variable_name.size = *name_size;
	set_xen_guest_handle(efi_data(op).u.get_next_variable_name.name, name);
	BUILD_BUG_ON(sizeof(*vendor) !=
		     sizeof(efi_data(op).u.get_next_variable_name.vendor_guid));
	memcpy(&efi_data(op).u.get_next_variable_name.vendor_guid, vendor,
	       sizeof(*vendor));

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	*name_size = efi_data(op).u.get_next_variable_name.size;
	memcpy(vendor, &efi_data(op).u.get_next_variable_name.vendor_guid,
	       sizeof(*vendor));

	return efi_data(op).status;
}

static efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
					 u32 attr, unsigned long data_size,
					 void *data)
{
	struct xen_platform_op op = INIT_EFI_OP(set_variable);

	set_xen_guest_handle(efi_data(op).u.set_variable.name, name);
	efi_data(op).misc = attr;
	BUILD_BUG_ON(sizeof(*vendor) !=
		     sizeof(efi_data(op).u.set_variable.vendor_guid));
	memcpy(&efi_data(op).u.set_variable.vendor_guid, vendor, sizeof(*vendor));
	efi_data(op).u.set_variable.size = data_size;
	set_xen_guest_handle(efi_data(op).u.set_variable.data, data);

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	return efi_data(op).status;
}

static efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
						u64 *remaining_space,
						u64 *max_variable_size)
{
	struct xen_platform_op op = INIT_EFI_OP(query_variable_info);

	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
		return EFI_UNSUPPORTED;

	efi_data(op).u.query_variable_info.attr = attr;

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	*storage_space = efi_data(op).u.query_variable_info.max_store_size;
	*remaining_space = efi_data(op).u.query_variable_info.remain_store_size;
	*max_variable_size = efi_data(op).u.query_variable_info.max_size;

	return efi_data(op).status;
}

static efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
{
	struct xen_platform_op op = INIT_EFI_OP(get_next_high_monotonic_count);

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	*count = efi_data(op).misc;

	return efi_data(op).status;
}

static efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
				unsigned long count, unsigned long sg_list)
{
	struct xen_platform_op op = INIT_EFI_OP(update_capsule);

	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
		return EFI_UNSUPPORTED;

	set_xen_guest_handle(efi_data(op).u.update_capsule.capsule_header_array,
			     capsules);
	efi_data(op).u.update_capsule.capsule_count = count;
	efi_data(op).u.update_capsule.sg_list = sg_list;

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	return efi_data(op).status;
}

static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
			unsigned long count, u64 *max_size, int *reset_type)
{
	struct xen_platform_op op = INIT_EFI_OP(query_capsule_capabilities);

	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
		return EFI_UNSUPPORTED;

	set_xen_guest_handle(efi_data(op).u.query_capsule_capabilities.capsule_header_array,
					capsules);
	efi_data(op).u.query_capsule_capabilities.capsule_count = count;

	if (HYPERVISOR_platform_op(&op) < 0)
		return EFI_UNSUPPORTED;

	*max_size = efi_data(op).u.query_capsule_capabilities.max_capsule_size;
	*reset_type = efi_data(op).u.query_capsule_capabilities.reset_type;

	return efi_data(op).status;
}

static void xen_efi_reset_system(int reset_type, efi_status_t status,
				 unsigned long data_size, efi_char16_t *data)
{
	switch (reset_type) {
	case EFI_RESET_COLD:
	case EFI_RESET_WARM:
		xen_reboot(SHUTDOWN_reboot);
		break;
	case EFI_RESET_SHUTDOWN:
		xen_reboot(SHUTDOWN_poweroff);
		break;
	default:
		BUG();
	}
}

/*
 * Set XEN EFI runtime services function pointers. Other fields of struct efi,
 * e.g. efi.systab, will be set like normal EFI.
 */
void __init xen_efi_runtime_setup(void)
{
	efi.get_time			= xen_efi_get_time;
	efi.set_time			= xen_efi_set_time;
	efi.get_wakeup_time		= xen_efi_get_wakeup_time;
	efi.set_wakeup_time		= xen_efi_set_wakeup_time;
	efi.get_variable		= xen_efi_get_variable;
	efi.get_next_variable		= xen_efi_get_next_variable;
	efi.set_variable		= xen_efi_set_variable;
	efi.set_variable_nonblocking	= xen_efi_set_variable;
	efi.query_variable_info		= xen_efi_query_variable_info;
	efi.query_variable_info_nonblocking = xen_efi_query_variable_info;
	efi.update_capsule		= xen_efi_update_capsule;
	efi.query_capsule_caps		= xen_efi_query_capsule_caps;
	efi.get_next_high_mono_count	= xen_efi_get_next_high_mono_count;
	efi.reset_system		= xen_efi_reset_system;
}
Commit	Line	Data
457c8996	1	// SPDX-License-Identifier: GPL-2.0-only
be81c8a1 DK	2	/*
	3	* EFI support for Xen.
	4	*
	5	* Copyright (C) 1999 VA Linux Systems
	6	* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
	7	* Copyright (C) 1999-2002 Hewlett-Packard Co.
	8	* David Mosberger-Tang <davidm@hpl.hp.com>
	9	* Stephane Eranian <eranian@hpl.hp.com>
	10	* Copyright (C) 2005-2008 Intel Co.
	11	* Fenghua Yu <fenghua.yu@intel.com>
	12	* Bibo Mao <bibo.mao@intel.com>
	13	* Chandramouli Narayanan <mouli@linux.intel.com>
	14	* Huang Ying <ying.huang@intel.com>
	15	* Copyright (C) 2011 Novell Co.
	16	* Jan Beulich <JBeulich@suse.com>
	17	* Copyright (C) 2011-2012 Oracle Co.
	18	* Liang Tang <liang.tang@oracle.com>
	19	* Copyright (c) 2014 Oracle Co., Daniel Kiper
	20	*/
	21
	22	#include <linux/bug.h>
	23	#include <linux/efi.h>
	24	#include <linux/init.h>
	25	#include <linux/string.h>
	26
	27	#include <xen/interface/xen.h>
	28	#include <xen/interface/platform.h>
	29	#include <xen/xen.h>
e371fd76	30	#include <xen/xen-ops.h>
be81c8a1	31
342cd340 DK	32	#include <asm/page.h>
342cd340 DK	33
be81c8a1 DK	34	#include <asm/xen/hypercall.h>
	35
	36	#define INIT_EFI_OP(name) \
	37	{.cmd = XENPF_efi_runtime_call, \
	38	.u.efi_runtime_call.function = XEN_EFI_##name, \
	39	.u.efi_runtime_call.misc = 0}
	40
	41	#define efi_data(op) (op.u.efi_runtime_call)
	42
09515706	43	static efi_status_t xen_efi_get_time(efi_time_t tm, efi_time_cap_t tc)
be81c8a1 DK	44	{
	45	struct xen_platform_op op = INIT_EFI_OP(get_time);
	46
cfafae94	47	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	48	return EFI_UNSUPPORTED;
	49
	50	if (tm) {
	51	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_time.time));
	52	memcpy(tm, &efi_data(op).u.get_time.time, sizeof(*tm));
	53	}
	54
	55	if (tc) {
	56	tc->resolution = efi_data(op).u.get_time.resolution;
	57	tc->accuracy = efi_data(op).u.get_time.accuracy;
	58	tc->sets_to_zero = !!(efi_data(op).misc &
	59	XEN_EFI_GET_TIME_SET_CLEARS_NS);
	60	}
	61
	62	return efi_data(op).status;
	63	}
	64
09515706	65	static efi_status_t xen_efi_set_time(efi_time_t *tm)
be81c8a1 DK	66	{
	67	struct xen_platform_op op = INIT_EFI_OP(set_time);
	68
	69	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_time));
	70	memcpy(&efi_data(op).u.set_time, tm, sizeof(*tm));
	71
cfafae94	72	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	73	return EFI_UNSUPPORTED;
	74
	75	return efi_data(op).status;
	76	}
	77
09515706 JG	78	static efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled,
	79	efi_bool_t *pending,
	80	efi_time_t *tm)
be81c8a1 DK	81	{
	82	struct xen_platform_op op = INIT_EFI_OP(get_wakeup_time);
	83
cfafae94	84	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	85	return EFI_UNSUPPORTED;
	86
	87	if (tm) {
	88	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_wakeup_time));
	89	memcpy(tm, &efi_data(op).u.get_wakeup_time, sizeof(*tm));
	90	}
	91
	92	if (enabled)
	93	*enabled = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_ENABLED);
	94
	95	if (pending)
	96	*pending = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_PENDING);
	97
	98	return efi_data(op).status;
	99	}
	100
09515706	101	static efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
be81c8a1 DK	102	{
	103	struct xen_platform_op op = INIT_EFI_OP(set_wakeup_time);
	104
	105	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_wakeup_time));
	106	if (enabled)
	107	efi_data(op).misc = XEN_EFI_SET_WAKEUP_TIME_ENABLE;
	108	if (tm)
	109	memcpy(&efi_data(op).u.set_wakeup_time, tm, sizeof(*tm));
	110	else
	111	efi_data(op).misc \|= XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY;
	112
cfafae94	113	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	114	return EFI_UNSUPPORTED;
	115
	116	return efi_data(op).status;
	117	}
	118
09515706 JG	119	static efi_status_t xen_efi_get_variable(efi_char16_t name, efi_guid_t vendor,
	120	u32 attr, unsigned long data_size,
	121	void *data)
be81c8a1 DK	122	{
	123	struct xen_platform_op op = INIT_EFI_OP(get_variable);
	124
	125	set_xen_guest_handle(efi_data(op).u.get_variable.name, name);
	126	BUILD_BUG_ON(sizeof(*vendor) !=
	127	sizeof(efi_data(op).u.get_variable.vendor_guid));
	128	memcpy(&efi_data(op).u.get_variable.vendor_guid, vendor, sizeof(*vendor));
	129	efi_data(op).u.get_variable.size = *data_size;
	130	set_xen_guest_handle(efi_data(op).u.get_variable.data, data);
	131
cfafae94	132	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	133	return EFI_UNSUPPORTED;
	134
	135	*data_size = efi_data(op).u.get_variable.size;
	136	if (attr)
	137	*attr = efi_data(op).misc;
	138
	139	return efi_data(op).status;
	140	}
	141
09515706 JG	142	static efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
	143	efi_char16_t *name,
	144	efi_guid_t *vendor)
be81c8a1 DK	145	{
	146	struct xen_platform_op op = INIT_EFI_OP(get_next_variable_name);
	147
	148	efi_data(op).u.get_next_variable_name.size = *name_size;
	149	set_xen_guest_handle(efi_data(op).u.get_next_variable_name.name, name);
	150	BUILD_BUG_ON(sizeof(*vendor) !=
	151	sizeof(efi_data(op).u.get_next_variable_name.vendor_guid));
	152	memcpy(&efi_data(op).u.get_next_variable_name.vendor_guid, vendor,
	153	sizeof(*vendor));
	154
cfafae94	155	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	156	return EFI_UNSUPPORTED;
	157
	158	*name_size = efi_data(op).u.get_next_variable_name.size;
	159	memcpy(vendor, &efi_data(op).u.get_next_variable_name.vendor_guid,
	160	sizeof(*vendor));
	161
	162	return efi_data(op).status;
	163	}
	164
09515706 JG	165	static efi_status_t xen_efi_set_variable(efi_char16_t name, efi_guid_t vendor,
	166	u32 attr, unsigned long data_size,
	167	void *data)
be81c8a1 DK	168	{
	169	struct xen_platform_op op = INIT_EFI_OP(set_variable);
	170
	171	set_xen_guest_handle(efi_data(op).u.set_variable.name, name);
	172	efi_data(op).misc = attr;
	173	BUILD_BUG_ON(sizeof(*vendor) !=
	174	sizeof(efi_data(op).u.set_variable.vendor_guid));
	175	memcpy(&efi_data(op).u.set_variable.vendor_guid, vendor, sizeof(*vendor));
	176	efi_data(op).u.set_variable.size = data_size;
	177	set_xen_guest_handle(efi_data(op).u.set_variable.data, data);
	178
cfafae94	179	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	180	return EFI_UNSUPPORTED;
	181
	182	return efi_data(op).status;
	183	}
	184
09515706 JG	185	static efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
	186	u64 *remaining_space,
	187	u64 *max_variable_size)
be81c8a1 DK	188	{
	189	struct xen_platform_op op = INIT_EFI_OP(query_variable_info);
	190
	191	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
	192	return EFI_UNSUPPORTED;
	193
	194	efi_data(op).u.query_variable_info.attr = attr;
	195
cfafae94	196	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	197	return EFI_UNSUPPORTED;
	198
	199	*storage_space = efi_data(op).u.query_variable_info.max_store_size;
	200	*remaining_space = efi_data(op).u.query_variable_info.remain_store_size;
	201	*max_variable_size = efi_data(op).u.query_variable_info.max_size;
	202
	203	return efi_data(op).status;
	204	}
	205
09515706	206	static efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
be81c8a1 DK	207	{
	208	struct xen_platform_op op = INIT_EFI_OP(get_next_high_monotonic_count);
	209
cfafae94	210	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	211	return EFI_UNSUPPORTED;
	212
	213	*count = efi_data(op).misc;
	214
	215	return efi_data(op).status;
	216	}
	217
09515706 JG	218	static efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
09515706 JG	219	unsigned long count, unsigned long sg_list)
be81c8a1 DK	220	{
	221	struct xen_platform_op op = INIT_EFI_OP(update_capsule);
	222
	223	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
	224	return EFI_UNSUPPORTED;
	225
	226	set_xen_guest_handle(efi_data(op).u.update_capsule.capsule_header_array,
	227	capsules);
	228	efi_data(op).u.update_capsule.capsule_count = count;
	229	efi_data(op).u.update_capsule.sg_list = sg_list;
	230
cfafae94	231	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	232	return EFI_UNSUPPORTED;
	233
	234	return efi_data(op).status;
	235	}
	236
09515706 JG	237	static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
09515706 JG	238	unsigned long count, u64 max_size, int reset_type)
be81c8a1 DK	239	{
	240	struct xen_platform_op op = INIT_EFI_OP(query_capsule_capabilities);
	241
	242	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
	243	return EFI_UNSUPPORTED;
	244
	245	set_xen_guest_handle(efi_data(op).u.query_capsule_capabilities.capsule_header_array,
	246	capsules);
	247	efi_data(op).u.query_capsule_capabilities.capsule_count = count;
	248
cfafae94	249	if (HYPERVISOR_platform_op(&op) < 0)
be81c8a1 DK	250	return EFI_UNSUPPORTED;
	251
	252	*max_size = efi_data(op).u.query_capsule_capabilities.max_capsule_size;
	253	*reset_type = efi_data(op).u.query_capsule_capabilities.reset_type;
	254
	255	return efi_data(op).status;
	256	}
e371fd76	257
09515706 JG	258	static void xen_efi_reset_system(int reset_type, efi_status_t status,
09515706 JG	259	unsigned long data_size, efi_char16_t *data)
e371fd76 JG	260	{
	261	switch (reset_type) {
	262	case EFI_RESET_COLD:
	263	case EFI_RESET_WARM:
	264	xen_reboot(SHUTDOWN_reboot);
	265	break;
	266	case EFI_RESET_SHUTDOWN:
	267	xen_reboot(SHUTDOWN_poweroff);
	268	break;
	269	default:
	270	BUG();
	271	}
	272	}
09515706 JG	273
	274	/*
	275	* Set XEN EFI runtime services function pointers. Other fields of struct efi,
	276	* e.g. efi.systab, will be set like normal EFI.
	277	*/
	278	void __init xen_efi_runtime_setup(void)
	279	{
	280	efi.get_time = xen_efi_get_time;
	281	efi.set_time = xen_efi_set_time;
	282	efi.get_wakeup_time = xen_efi_get_wakeup_time;
	283	efi.set_wakeup_time = xen_efi_set_wakeup_time;
	284	efi.get_variable = xen_efi_get_variable;
	285	efi.get_next_variable = xen_efi_get_next_variable;
	286	efi.set_variable = xen_efi_set_variable;
	287	efi.set_variable_nonblocking = xen_efi_set_variable;
	288	efi.query_variable_info = xen_efi_query_variable_info;
	289	efi.query_variable_info_nonblocking = xen_efi_query_variable_info;
	290	efi.update_capsule = xen_efi_update_capsule;
	291	efi.query_capsule_caps = xen_efi_query_capsule_caps;
	292	efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count;
	293	efi.reset_system = xen_efi_reset_system;
	294	}