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22 results

DataCompareUtils.java

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  • efi.h 36.18 KiB
    #ifndef _LINUX_EFI_H
    #define _LINUX_EFI_H
    
    /*
     * Extensible Firmware Interface
     * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
     *
     * Copyright (C) 1999 VA Linux Systems
     * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
     * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
     *	David Mosberger-Tang <davidm@hpl.hp.com>
     *	Stephane Eranian <eranian@hpl.hp.com>
     */
    #include <linux/init.h>
    #include <linux/string.h>
    #include <linux/time.h>
    #include <linux/types.h>
    #include <linux/proc_fs.h>
    #include <linux/rtc.h>
    #include <linux/ioport.h>
    #include <linux/pfn.h>
    #include <linux/pstore.h>
    #include <linux/reboot.h>
    
    #include <asm/page.h>
    
    #define EFI_SUCCESS		0
    #define EFI_LOAD_ERROR          ( 1 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_INVALID_PARAMETER	( 2 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_UNSUPPORTED		( 3 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_BAD_BUFFER_SIZE     ( 4 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_BUFFER_TOO_SMALL	( 5 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_NOT_READY		( 6 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_DEVICE_ERROR	( 7 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_WRITE_PROTECTED	( 8 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_OUT_OF_RESOURCES	( 9 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_NOT_FOUND		(14 | (1UL << (BITS_PER_LONG-1)))
    #define EFI_SECURITY_VIOLATION	(26 | (1UL << (BITS_PER_LONG-1)))
    
    typedef unsigned long efi_status_t;
    typedef u8 efi_bool_t;
    typedef u16 efi_char16_t;		/* UNICODE character */
    typedef u64 efi_physical_addr_t;
    typedef void *efi_handle_t;
    
    
    typedef struct {
    	u8 b[16];
    } efi_guid_t;
    
    #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
    ((efi_guid_t) \
    {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
      (b) & 0xff, ((b) >> 8) & 0xff, \
      (c) & 0xff, ((c) >> 8) & 0xff, \
      (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
    
    /*
     * Generic EFI table header
     */
    typedef	struct {
    	u64 signature;
    	u32 revision;
    	u32 headersize;
    	u32 crc32;
    	u32 reserved;
    } efi_table_hdr_t;
    
    /*
     * Memory map descriptor:
     */
    
    /* Memory types: */
    #define EFI_RESERVED_TYPE		 0
    #define EFI_LOADER_CODE			 1
    #define EFI_LOADER_DATA			 2
    #define EFI_BOOT_SERVICES_CODE		 3
    #define EFI_BOOT_SERVICES_DATA		 4
    #define EFI_RUNTIME_SERVICES_CODE	 5
    #define EFI_RUNTIME_SERVICES_DATA	 6
    #define EFI_CONVENTIONAL_MEMORY		 7
    #define EFI_UNUSABLE_MEMORY		 8
    #define EFI_ACPI_RECLAIM_MEMORY		 9
    #define EFI_ACPI_MEMORY_NVS		10
    #define EFI_MEMORY_MAPPED_IO		11
    #define EFI_MEMORY_MAPPED_IO_PORT_SPACE	12
    #define EFI_PAL_CODE			13
    #define EFI_PERSISTENT_MEMORY		14
    #define EFI_MAX_MEMORY_TYPE		15
    
    /* Attribute values: */
    #define EFI_MEMORY_UC		((u64)0x0000000000000001ULL)	/* uncached */
    #define EFI_MEMORY_WC		((u64)0x0000000000000002ULL)	/* write-coalescing */
    #define EFI_MEMORY_WT		((u64)0x0000000000000004ULL)	/* write-through */
    #define EFI_MEMORY_WB		((u64)0x0000000000000008ULL)	/* write-back */
    #define EFI_MEMORY_UCE		((u64)0x0000000000000010ULL)	/* uncached, exported */
    #define EFI_MEMORY_WP		((u64)0x0000000000001000ULL)	/* write-protect */
    #define EFI_MEMORY_RP		((u64)0x0000000000002000ULL)	/* read-protect */
    #define EFI_MEMORY_XP		((u64)0x0000000000004000ULL)	/* execute-protect */
    #define EFI_MEMORY_NV		((u64)0x0000000000008000ULL)	/* non-volatile */
    #define EFI_MEMORY_MORE_RELIABLE \
    				((u64)0x0000000000010000ULL)	/* higher reliability */
    #define EFI_MEMORY_RO		((u64)0x0000000000020000ULL)	/* read-only */
    #define EFI_MEMORY_RUNTIME	((u64)0x8000000000000000ULL)	/* range requires runtime mapping */
    #define EFI_MEMORY_DESCRIPTOR_VERSION	1
    
    #define EFI_PAGE_SHIFT		12
    #define EFI_PAGE_SIZE		(1UL << EFI_PAGE_SHIFT)
    
    typedef struct {
    	u32 type;
    	u32 pad;
    	u64 phys_addr;
    	u64 virt_addr;
    	u64 num_pages;
    	u64 attribute;
    } efi_memory_desc_t;
    
    typedef struct {
    	efi_guid_t guid;
    	u32 headersize;
    	u32 flags;
    	u32 imagesize;
    } efi_capsule_header_t;
    
    /*
     * Allocation types for calls to boottime->allocate_pages.
     */
    #define EFI_ALLOCATE_ANY_PAGES		0
    #define EFI_ALLOCATE_MAX_ADDRESS	1
    #define EFI_ALLOCATE_ADDRESS		2
    #define EFI_MAX_ALLOCATE_TYPE		3
    
    typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
    
    /*
     * Types and defines for Time Services
     */
    #define EFI_TIME_ADJUST_DAYLIGHT 0x1
    #define EFI_TIME_IN_DAYLIGHT     0x2
    #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
    
    typedef struct {
    	u16 year;
    	u8 month;
    	u8 day;
    	u8 hour;
    	u8 minute;
    	u8 second;
    	u8 pad1;
    	u32 nanosecond;
    	s16 timezone;
    	u8 daylight;
    	u8 pad2;
    } efi_time_t;
    
    typedef struct {
    	u32 resolution;
    	u32 accuracy;
    	u8 sets_to_zero;
    } efi_time_cap_t;
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	u32 raise_tpl;
    	u32 restore_tpl;
    	u32 allocate_pages;
    	u32 free_pages;
    	u32 get_memory_map;
    	u32 allocate_pool;
    	u32 free_pool;
    	u32 create_event;
    	u32 set_timer;
    	u32 wait_for_event;
    	u32 signal_event;
    	u32 close_event;
    	u32 check_event;
    	u32 install_protocol_interface;
    	u32 reinstall_protocol_interface;
    	u32 uninstall_protocol_interface;
    	u32 handle_protocol;
    	u32 __reserved;
    	u32 register_protocol_notify;
    	u32 locate_handle;
    	u32 locate_device_path;
    	u32 install_configuration_table;
    	u32 load_image;
    	u32 start_image;
    	u32 exit;
    	u32 unload_image;
    	u32 exit_boot_services;
    	u32 get_next_monotonic_count;
    	u32 stall;
    	u32 set_watchdog_timer;
    	u32 connect_controller;
    	u32 disconnect_controller;
    	u32 open_protocol;
    	u32 close_protocol;
    	u32 open_protocol_information;
    	u32 protocols_per_handle;
    	u32 locate_handle_buffer;
    	u32 locate_protocol;
    	u32 install_multiple_protocol_interfaces;
    	u32 uninstall_multiple_protocol_interfaces;
    	u32 calculate_crc32;
    	u32 copy_mem;
    	u32 set_mem;
    	u32 create_event_ex;
    } __packed efi_boot_services_32_t;
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	u64 raise_tpl;
    	u64 restore_tpl;
    	u64 allocate_pages;
    	u64 free_pages;
    	u64 get_memory_map;
    	u64 allocate_pool;
    	u64 free_pool;
    	u64 create_event;
    	u64 set_timer;
    	u64 wait_for_event;
    	u64 signal_event;
    	u64 close_event;
    	u64 check_event;
    	u64 install_protocol_interface;
    	u64 reinstall_protocol_interface;
    	u64 uninstall_protocol_interface;
    	u64 handle_protocol;
    	u64 __reserved;
    	u64 register_protocol_notify;
    	u64 locate_handle;
    	u64 locate_device_path;
    	u64 install_configuration_table;
    	u64 load_image;
    	u64 start_image;
    	u64 exit;
    	u64 unload_image;
    	u64 exit_boot_services;
    	u64 get_next_monotonic_count;
    	u64 stall;
    	u64 set_watchdog_timer;
    	u64 connect_controller;
    	u64 disconnect_controller;
    	u64 open_protocol;
    	u64 close_protocol;
    	u64 open_protocol_information;
    	u64 protocols_per_handle;
    	u64 locate_handle_buffer;
    	u64 locate_protocol;
    	u64 install_multiple_protocol_interfaces;
    	u64 uninstall_multiple_protocol_interfaces;
    	u64 calculate_crc32;
    	u64 copy_mem;
    	u64 set_mem;
    	u64 create_event_ex;
    } __packed efi_boot_services_64_t;
    
    /*
     * EFI Boot Services table
     */
    typedef struct {
    	efi_table_hdr_t hdr;
    	void *raise_tpl;
    	void *restore_tpl;
    	efi_status_t (*allocate_pages)(int, int, unsigned long,
    				       efi_physical_addr_t *);
    	efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
    	efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
    				       unsigned long *, u32 *);
    	efi_status_t (*allocate_pool)(int, unsigned long, void **);
    	efi_status_t (*free_pool)(void *);
    	void *create_event;
    	void *set_timer;
    	void *wait_for_event;
    	void *signal_event;
    	void *close_event;
    	void *check_event;
    	void *install_protocol_interface;
    	void *reinstall_protocol_interface;
    	void *uninstall_protocol_interface;
    	efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
    	void *__reserved;
    	void *register_protocol_notify;
    	void *locate_handle;
    	void *locate_device_path;
    	void *install_configuration_table;
    	void *load_image;
    	void *start_image;
    	void *exit;
    	void *unload_image;
    	efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
    	void *get_next_monotonic_count;
    	void *stall;
    	void *set_watchdog_timer;
    	void *connect_controller;
    	void *disconnect_controller;
    	void *open_protocol;
    	void *close_protocol;
    	void *open_protocol_information;
    	void *protocols_per_handle;
    	void *locate_handle_buffer;
    	efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
    	void *install_multiple_protocol_interfaces;
    	void *uninstall_multiple_protocol_interfaces;
    	void *calculate_crc32;
    	void *copy_mem;
    	void *set_mem;
    	void *create_event_ex;
    } efi_boot_services_t;
    
    typedef enum {
    	EfiPciIoWidthUint8,
    	EfiPciIoWidthUint16,
    	EfiPciIoWidthUint32,
    	EfiPciIoWidthUint64,
    	EfiPciIoWidthFifoUint8,
    	EfiPciIoWidthFifoUint16,
    	EfiPciIoWidthFifoUint32,
    	EfiPciIoWidthFifoUint64,
    	EfiPciIoWidthFillUint8,
    	EfiPciIoWidthFillUint16,
    	EfiPciIoWidthFillUint32,
    	EfiPciIoWidthFillUint64,
    	EfiPciIoWidthMaximum
    } EFI_PCI_IO_PROTOCOL_WIDTH;
    
    typedef enum {
    	EfiPciIoAttributeOperationGet,
    	EfiPciIoAttributeOperationSet,
    	EfiPciIoAttributeOperationEnable,
    	EfiPciIoAttributeOperationDisable,
    	EfiPciIoAttributeOperationSupported,
        EfiPciIoAttributeOperationMaximum
    } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
    
    typedef struct {
    	u32 read;
    	u32 write;
    } efi_pci_io_protocol_access_32_t;
    
    typedef struct {
    	u64 read;
    	u64 write;
    } efi_pci_io_protocol_access_64_t;
    
    typedef struct {
    	void *read;
    	void *write;
    } efi_pci_io_protocol_access_t;
    
    typedef struct {
    	u32 poll_mem;
    	u32 poll_io;
    	efi_pci_io_protocol_access_32_t mem;
    	efi_pci_io_protocol_access_32_t io;
    	efi_pci_io_protocol_access_32_t pci;
    	u32 copy_mem;
    	u32 map;
    	u32 unmap;
    	u32 allocate_buffer;
    	u32 free_buffer;
    	u32 flush;
    	u32 get_location;
    	u32 attributes;
    	u32 get_bar_attributes;
    	u32 set_bar_attributes;
    	uint64_t romsize;
    	void *romimage;
    } efi_pci_io_protocol_32;
    
    typedef struct {
    	u64 poll_mem;
    	u64 poll_io;
    	efi_pci_io_protocol_access_64_t mem;
    	efi_pci_io_protocol_access_64_t io;
    	efi_pci_io_protocol_access_64_t pci;
    	u64 copy_mem;
    	u64 map;
    	u64 unmap;
    	u64 allocate_buffer;
    	u64 free_buffer;
    	u64 flush;
    	u64 get_location;
    	u64 attributes;
    	u64 get_bar_attributes;
    	u64 set_bar_attributes;
    	uint64_t romsize;
    	void *romimage;
    } efi_pci_io_protocol_64;
    
    typedef struct {
    	void *poll_mem;
    	void *poll_io;
    	efi_pci_io_protocol_access_t mem;
    	efi_pci_io_protocol_access_t io;
    	efi_pci_io_protocol_access_t pci;
    	void *copy_mem;
    	void *map;
    	void *unmap;
    	void *allocate_buffer;
    	void *free_buffer;
    	void *flush;
    	void *get_location;
    	void *attributes;
    	void *get_bar_attributes;
    	void *set_bar_attributes;
    	uint64_t romsize;
    	void *romimage;
    } efi_pci_io_protocol;
    
    #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
    #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
    #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
    #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
    #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
    #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
    #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
    #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
    #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
    #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
    #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
    #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
    #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
    #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
    #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
    #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
    #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
    #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
    #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
    
    /*
     * Types and defines for EFI ResetSystem
     */
    #define EFI_RESET_COLD 0
    #define EFI_RESET_WARM 1
    #define EFI_RESET_SHUTDOWN 2
    
    /*
     * EFI Runtime Services table
     */
    #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
    #define EFI_RUNTIME_SERVICES_REVISION  0x00010000
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	u32 get_time;
    	u32 set_time;
    	u32 get_wakeup_time;
    	u32 set_wakeup_time;
    	u32 set_virtual_address_map;
    	u32 convert_pointer;
    	u32 get_variable;
    	u32 get_next_variable;
    	u32 set_variable;
    	u32 get_next_high_mono_count;
    	u32 reset_system;
    	u32 update_capsule;
    	u32 query_capsule_caps;
    	u32 query_variable_info;
    } efi_runtime_services_32_t;
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	u64 get_time;
    	u64 set_time;
    	u64 get_wakeup_time;
    	u64 set_wakeup_time;
    	u64 set_virtual_address_map;
    	u64 convert_pointer;
    	u64 get_variable;
    	u64 get_next_variable;
    	u64 set_variable;
    	u64 get_next_high_mono_count;
    	u64 reset_system;
    	u64 update_capsule;
    	u64 query_capsule_caps;
    	u64 query_variable_info;
    } efi_runtime_services_64_t;
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	void *get_time;
    	void *set_time;
    	void *get_wakeup_time;
    	void *set_wakeup_time;
    	void *set_virtual_address_map;
    	void *convert_pointer;
    	void *get_variable;
    	void *get_next_variable;
    	void *set_variable;
    	void *get_next_high_mono_count;
    	void *reset_system;
    	void *update_capsule;
    	void *query_capsule_caps;
    	void *query_variable_info;
    } efi_runtime_services_t;
    
    typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
    typedef efi_status_t efi_set_time_t (efi_time_t *tm);
    typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
    					    efi_time_t *tm);
    typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
    typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
    					 unsigned long *data_size, void *data);
    typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
    					      efi_guid_t *vendor);
    typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 
    					 u32 attr, unsigned long data_size,
    					 void *data);
    typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
    typedef void efi_reset_system_t (int reset_type, efi_status_t status,
    				 unsigned long data_size, efi_char16_t *data);
    typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
    						unsigned long descriptor_size,
    						u32 descriptor_version,
    						efi_memory_desc_t *virtual_map);
    typedef efi_status_t efi_query_variable_info_t(u32 attr,
    					       u64 *storage_space,
    					       u64 *remaining_space,
    					       u64 *max_variable_size);
    typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
    					  unsigned long count,
    					  unsigned long sg_list);
    typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
    					      unsigned long count,
    					      u64 *max_size,
    					      int *reset_type);
    typedef efi_status_t efi_query_variable_store_t(u32 attributes,
    						unsigned long size,
    						bool nonblocking);
    
    void efi_native_runtime_setup(void);
    
    /*
     *  EFI Configuration Table and GUID definitions
     */
    #define NULL_GUID \
    	EFI_GUID(0x00000000, 0x0000, 0x0000, \
    		 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
    
    #define MPS_TABLE_GUID    \
    	EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \
    		 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
    
    #define ACPI_TABLE_GUID    \
    	EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \
    		 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
    
    #define ACPI_20_TABLE_GUID    \
    	EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \
    		 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
    
    #define SMBIOS_TABLE_GUID    \
    	EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \
    		 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
    
    #define SMBIOS3_TABLE_GUID    \
    	EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \
    		 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
    
    #define SAL_SYSTEM_TABLE_GUID    \
    	EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \
    		 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
    
    #define HCDP_TABLE_GUID	\
    	EFI_GUID(0xf951938d, 0x620b, 0x42ef, \
    		 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
    
    #define UGA_IO_PROTOCOL_GUID \
    	EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \
    		 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
    
    #define EFI_GLOBAL_VARIABLE_GUID \
    	EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \
    		 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
    
    #define UV_SYSTEM_TABLE_GUID \
    	EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \
    		 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
    
    #define LINUX_EFI_CRASH_GUID \
    	EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \
    		 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
    
    #define LOADED_IMAGE_PROTOCOL_GUID \
    	EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
    		 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
    
    #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
    	EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
    		 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
    
    #define EFI_UGA_PROTOCOL_GUID \
    	EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \
    		 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
    
    #define EFI_PCI_IO_PROTOCOL_GUID \
    	EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \
    		 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
    
    #define EFI_FILE_INFO_ID \
    	EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \
    		 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
    
    #define EFI_SYSTEM_RESOURCE_TABLE_GUID \
    	EFI_GUID(0xb122a263, 0x3661, 0x4f68, \
    		 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
    
    #define EFI_FILE_SYSTEM_GUID \
    	EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \
    		 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
    
    #define DEVICE_TREE_GUID \
    	EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
    		 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
    
    #define EFI_PROPERTIES_TABLE_GUID \
    	EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \
    		 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
    
    #define EFI_RNG_PROTOCOL_GUID \
    	EFI_GUID(0x3152bca5, 0xeade, 0x433d, \
    		 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
    
    typedef struct {
    	efi_guid_t guid;
    	u64 table;
    } efi_config_table_64_t;
    
    typedef struct {
    	efi_guid_t guid;
    	u32 table;
    } efi_config_table_32_t;
    
    typedef struct {
    	efi_guid_t guid;
    	unsigned long table;
    } efi_config_table_t;
    
    typedef struct {
    	efi_guid_t guid;
    	const char *name;
    	unsigned long *ptr;
    } efi_config_table_type_t;
    
    #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
    
    #define EFI_2_30_SYSTEM_TABLE_REVISION  ((2 << 16) | (30))
    #define EFI_2_20_SYSTEM_TABLE_REVISION  ((2 << 16) | (20))
    #define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
    #define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
    #define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
    #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	u64 fw_vendor;	/* physical addr of CHAR16 vendor string */
    	u32 fw_revision;
    	u32 __pad1;
    	u64 con_in_handle;
    	u64 con_in;
    	u64 con_out_handle;
    	u64 con_out;
    	u64 stderr_handle;
    	u64 stderr;
    	u64 runtime;
    	u64 boottime;
    	u32 nr_tables;
    	u32 __pad2;
    	u64 tables;
    } efi_system_table_64_t;
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	u32 fw_vendor;	/* physical addr of CHAR16 vendor string */
    	u32 fw_revision;
    	u32 con_in_handle;
    	u32 con_in;
    	u32 con_out_handle;
    	u32 con_out;
    	u32 stderr_handle;
    	u32 stderr;
    	u32 runtime;
    	u32 boottime;
    	u32 nr_tables;
    	u32 tables;
    } efi_system_table_32_t;
    
    typedef struct {
    	efi_table_hdr_t hdr;
    	unsigned long fw_vendor;	/* physical addr of CHAR16 vendor string */
    	u32 fw_revision;
    	unsigned long con_in_handle;
    	unsigned long con_in;
    	unsigned long con_out_handle;
    	unsigned long con_out;
    	unsigned long stderr_handle;
    	unsigned long stderr;
    	efi_runtime_services_t *runtime;
    	efi_boot_services_t *boottime;
    	unsigned long nr_tables;
    	unsigned long tables;
    } efi_system_table_t;
    
    struct efi_memory_map {
    	phys_addr_t phys_map;
    	void *map;
    	void *map_end;
    	int nr_map;
    	unsigned long desc_version;
    	unsigned long desc_size;
    };
    
    struct efi_fdt_params {
    	u64 system_table;
    	u64 mmap;
    	u32 mmap_size;
    	u32 desc_size;
    	u32 desc_ver;
    };
    
    typedef struct {
    	u32 revision;
    	u32 parent_handle;
    	u32 system_table;
    	u32 device_handle;
    	u32 file_path;
    	u32 reserved;
    	u32 load_options_size;
    	u32 load_options;
    	u32 image_base;
    	__aligned_u64 image_size;
    	unsigned int image_code_type;
    	unsigned int image_data_type;
    	unsigned long unload;
    } efi_loaded_image_32_t;
    
    typedef struct {
    	u32 revision;
    	u64 parent_handle;
    	u64 system_table;
    	u64 device_handle;
    	u64 file_path;
    	u64 reserved;
    	u32 load_options_size;
    	u64 load_options;
    	u64 image_base;
    	__aligned_u64 image_size;
    	unsigned int image_code_type;
    	unsigned int image_data_type;
    	unsigned long unload;
    } efi_loaded_image_64_t;
    
    typedef struct {
    	u32 revision;
    	void *parent_handle;
    	efi_system_table_t *system_table;
    	void *device_handle;
    	void *file_path;
    	void *reserved;
    	u32 load_options_size;
    	void *load_options;
    	void *image_base;
    	__aligned_u64 image_size;
    	unsigned int image_code_type;
    	unsigned int image_data_type;
    	unsigned long unload;
    } efi_loaded_image_t;
    
    
    typedef struct {
    	u64 size;
    	u64 file_size;
    	u64 phys_size;
    	efi_time_t create_time;
    	efi_time_t last_access_time;
    	efi_time_t modification_time;
    	__aligned_u64 attribute;
    	efi_char16_t filename[1];
    } efi_file_info_t;
    
    typedef struct {
    	u64 revision;
    	u32 open;
    	u32 close;
    	u32 delete;
    	u32 read;
    	u32 write;
    	u32 get_position;
    	u32 set_position;
    	u32 get_info;
    	u32 set_info;
    	u32 flush;
    } efi_file_handle_32_t;
    
    typedef struct {
    	u64 revision;
    	u64 open;
    	u64 close;
    	u64 delete;
    	u64 read;
    	u64 write;
    	u64 get_position;
    	u64 set_position;
    	u64 get_info;
    	u64 set_info;
    	u64 flush;
    } efi_file_handle_64_t;
    
    typedef struct _efi_file_handle {
    	u64 revision;
    	efi_status_t (*open)(struct _efi_file_handle *,
    			     struct _efi_file_handle **,
    			     efi_char16_t *, u64, u64);
    	efi_status_t (*close)(struct _efi_file_handle *);
    	void *delete;
    	efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
    			     void *);
    	void *write;
    	void *get_position;
    	void *set_position;
    	efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
    			unsigned long *, void *);
    	void *set_info;
    	void *flush;
    } efi_file_handle_t;
    
    typedef struct _efi_file_io_interface {
    	u64 revision;
    	int (*open_volume)(struct _efi_file_io_interface *,
    			   efi_file_handle_t **);
    } efi_file_io_interface_t;
    
    #define EFI_FILE_MODE_READ	0x0000000000000001
    #define EFI_FILE_MODE_WRITE	0x0000000000000002
    #define EFI_FILE_MODE_CREATE	0x8000000000000000
    
    typedef struct {
    	u32 version;
    	u32 length;
    	u64 memory_protection_attribute;
    } efi_properties_table_t;
    
    #define EFI_PROPERTIES_TABLE_VERSION	0x00010000
    #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA	0x1
    
    #define EFI_INVALID_TABLE_ADDR		(~0UL)
    
    /*
     * All runtime access to EFI goes through this structure:
     */
    extern struct efi {
    	efi_system_table_t *systab;	/* EFI system table */
    	unsigned int runtime_version;	/* Runtime services version */
    	unsigned long mps;		/* MPS table */
    	unsigned long acpi;		/* ACPI table  (IA64 ext 0.71) */
    	unsigned long acpi20;		/* ACPI table  (ACPI 2.0) */
    	unsigned long smbios;		/* SMBIOS table (32 bit entry point) */
    	unsigned long smbios3;		/* SMBIOS table (64 bit entry point) */
    	unsigned long sal_systab;	/* SAL system table */
    	unsigned long boot_info;	/* boot info table */
    	unsigned long hcdp;		/* HCDP table */
    	unsigned long uga;		/* UGA table */
    	unsigned long uv_systab;	/* UV system table */
    	unsigned long fw_vendor;	/* fw_vendor */
    	unsigned long runtime;		/* runtime table */
    	unsigned long config_table;	/* config tables */
    	unsigned long esrt;		/* ESRT table */
    	unsigned long properties_table;	/* properties table */
    	efi_get_time_t *get_time;
    	efi_set_time_t *set_time;
    	efi_get_wakeup_time_t *get_wakeup_time;
    	efi_set_wakeup_time_t *set_wakeup_time;
    	efi_get_variable_t *get_variable;
    	efi_get_next_variable_t *get_next_variable;
    	efi_set_variable_t *set_variable;
    	efi_set_variable_t *set_variable_nonblocking;
    	efi_query_variable_info_t *query_variable_info;
    	efi_query_variable_info_t *query_variable_info_nonblocking;
    	efi_update_capsule_t *update_capsule;
    	efi_query_capsule_caps_t *query_capsule_caps;
    	efi_get_next_high_mono_count_t *get_next_high_mono_count;
    	efi_reset_system_t *reset_system;
    	efi_set_virtual_address_map_t *set_virtual_address_map;
    	struct efi_memory_map *memmap;
    	unsigned long flags;
    } efi;
    
    static inline int
    efi_guidcmp (efi_guid_t left, efi_guid_t right)
    {
    	return memcmp(&left, &right, sizeof (efi_guid_t));
    }
    
    static inline char *
    efi_guid_to_str(efi_guid_t *guid, char *out)
    {
    	sprintf(out, "%pUl", guid->b);
            return out;
    }
    
    extern void efi_init (void);
    extern void *efi_get_pal_addr (void);
    extern void efi_map_pal_code (void);
    extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
    extern void efi_gettimeofday (struct timespec *ts);
    extern void efi_enter_virtual_mode (void);	/* switch EFI to virtual mode, if possible */
    #ifdef CONFIG_X86
    extern void efi_late_init(void);
    extern void efi_free_boot_services(void);
    extern efi_status_t efi_query_variable_store(u32 attributes,
    					     unsigned long size,
    					     bool nonblocking);
    extern void efi_find_mirror(void);
    #else
    static inline void efi_late_init(void) {}
    static inline void efi_free_boot_services(void) {}
    
    static inline efi_status_t efi_query_variable_store(u32 attributes,
    						    unsigned long size,
    						    bool nonblocking)
    {
    	return EFI_SUCCESS;
    }
    #endif
    extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
    extern int efi_config_init(efi_config_table_type_t *arch_tables);
    #ifdef CONFIG_EFI_ESRT
    extern void __init efi_esrt_init(void);
    #else
    static inline void efi_esrt_init(void) { }
    #endif
    extern int efi_config_parse_tables(void *config_tables, int count, int sz,
    				   efi_config_table_type_t *arch_tables);
    extern u64 efi_get_iobase (void);
    extern u32 efi_mem_type (unsigned long phys_addr);
    extern u64 efi_mem_attributes (unsigned long phys_addr);
    extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
    extern int __init efi_uart_console_only (void);
    extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
    extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
    extern void efi_initialize_iomem_resources(struct resource *code_resource,
    		struct resource *data_resource, struct resource *bss_resource);
    extern void efi_get_time(struct timespec *now);
    extern void efi_reserve_boot_services(void);
    extern int efi_get_fdt_params(struct efi_fdt_params *params);
    extern struct efi_memory_map memmap;
    extern struct kobject *efi_kobj;
    
    extern int efi_reboot_quirk_mode;
    extern bool efi_poweroff_required(void);
    
    #ifdef CONFIG_EFI_FAKE_MEMMAP
    extern void __init efi_fake_memmap(void);
    #else
    static inline void efi_fake_memmap(void) { }
    #endif
    
    /* Iterate through an efi_memory_map */
    #define for_each_efi_memory_desc_in_map(m, md)				   \
    	for ((md) = (m)->map;						   \
    	     (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
    	     (md) = (void *)(md) + (m)->desc_size)
    
    /**
     * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
     * @md: the efi_memory_desc_t * iterator
     *
     * Once the loop finishes @md must not be accessed.
     */
    #define for_each_efi_memory_desc(md) \
    	for_each_efi_memory_desc_in_map(efi.memmap, md)
    
    /*
     * Format an EFI memory descriptor's type and attributes to a user-provided
     * character buffer, as per snprintf(), and return the buffer.
     */
    char * __init efi_md_typeattr_format(char *buf, size_t size,
    				     const efi_memory_desc_t *md);
    
    /**
     * efi_range_is_wc - check the WC bit on an address range
     * @start: starting kvirt address
     * @len: length of range
     *
     * Consult the EFI memory map and make sure it's ok to set this range WC.
     * Returns true or false.
     */
    static inline int efi_range_is_wc(unsigned long start, unsigned long len)
    {
    	unsigned long i;
    
    	for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
    		unsigned long paddr = __pa(start + i);
    		if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
    			return 0;
    	}
    	/* The range checked out */
    	return 1;
    }
    
    #ifdef CONFIG_EFI_PCDP
    extern int __init efi_setup_pcdp_console(char *);
    #endif
    
    /*
     * We play games with efi_enabled so that the compiler will, if
     * possible, remove EFI-related code altogether.
     */
    #define EFI_BOOT		0	/* Were we booted from EFI? */
    #define EFI_CONFIG_TABLES	2	/* Can we use EFI config tables? */
    #define EFI_RUNTIME_SERVICES	3	/* Can we use runtime services? */
    #define EFI_MEMMAP		4	/* Can we use EFI memory map? */
    #define EFI_64BIT		5	/* Is the firmware 64-bit? */
    #define EFI_PARAVIRT		6	/* Access is via a paravirt interface */
    #define EFI_ARCH_1		7	/* First arch-specific bit */
    #define EFI_DBG			8	/* Print additional debug info at runtime */
    #define EFI_NX_PE_DATA		9	/* Can runtime data regions be mapped non-executable? */
    
    #ifdef CONFIG_EFI
    /*
     * Test whether the above EFI_* bits are enabled.
     */
    static inline bool efi_enabled(int feature)
    {
    	return test_bit(feature, &efi.flags) != 0;
    }
    extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
    #else
    static inline bool efi_enabled(int feature)
    {
    	return false;
    }
    static inline void
    efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
    #endif
    
    /*
     * Variable Attributes
     */
    #define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001
    #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
    #define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004
    #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
    #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
    #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
    #define EFI_VARIABLE_APPEND_WRITE	0x0000000000000040
    
    #define EFI_VARIABLE_MASK 	(EFI_VARIABLE_NON_VOLATILE | \
    				EFI_VARIABLE_BOOTSERVICE_ACCESS | \
    				EFI_VARIABLE_RUNTIME_ACCESS | \
    				EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
    				EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
    				EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
    				EFI_VARIABLE_APPEND_WRITE)
    /*
     * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
     * not including trailing NUL
     */
    #define EFI_VARIABLE_GUID_LEN 36
    
    /*
     * The type of search to perform when calling boottime->locate_handle
     */
    #define EFI_LOCATE_ALL_HANDLES			0
    #define EFI_LOCATE_BY_REGISTER_NOTIFY		1
    #define EFI_LOCATE_BY_PROTOCOL			2
    
    /*
     * EFI Device Path information
     */
    #define EFI_DEV_HW			0x01
    #define  EFI_DEV_PCI				 1
    #define  EFI_DEV_PCCARD				 2
    #define  EFI_DEV_MEM_MAPPED			 3
    #define  EFI_DEV_VENDOR				 4
    #define  EFI_DEV_CONTROLLER			 5
    #define EFI_DEV_ACPI			0x02
    #define   EFI_DEV_BASIC_ACPI			 1
    #define   EFI_DEV_EXPANDED_ACPI			 2
    #define EFI_DEV_MSG			0x03
    #define   EFI_DEV_MSG_ATAPI			 1
    #define   EFI_DEV_MSG_SCSI			 2
    #define   EFI_DEV_MSG_FC			 3
    #define   EFI_DEV_MSG_1394			 4
    #define   EFI_DEV_MSG_USB			 5
    #define   EFI_DEV_MSG_USB_CLASS			15
    #define   EFI_DEV_MSG_I20			 6
    #define   EFI_DEV_MSG_MAC			11
    #define   EFI_DEV_MSG_IPV4			12
    #define   EFI_DEV_MSG_IPV6			13
    #define   EFI_DEV_MSG_INFINIBAND		 9
    #define   EFI_DEV_MSG_UART			14
    #define   EFI_DEV_MSG_VENDOR			10
    #define EFI_DEV_MEDIA			0x04
    #define   EFI_DEV_MEDIA_HARD_DRIVE		 1
    #define   EFI_DEV_MEDIA_CDROM			 2
    #define   EFI_DEV_MEDIA_VENDOR			 3
    #define   EFI_DEV_MEDIA_FILE			 4
    #define   EFI_DEV_MEDIA_PROTOCOL		 5
    #define EFI_DEV_BIOS_BOOT		0x05
    #define EFI_DEV_END_PATH		0x7F
    #define EFI_DEV_END_PATH2		0xFF
    #define   EFI_DEV_END_INSTANCE			0x01
    #define   EFI_DEV_END_ENTIRE			0xFF
    
    struct efi_generic_dev_path {
    	u8 type;
    	u8 sub_type;
    	u16 length;
    } __attribute ((packed));
    
    static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
    {
    	*npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
    	*addr &= PAGE_MASK;
    }
    
    /*
     * EFI Variable support.
     *
     * Different firmware drivers can expose their EFI-like variables using
     * the following.
     */
    
    struct efivar_operations {
    	efi_get_variable_t *get_variable;
    	efi_get_next_variable_t *get_next_variable;
    	efi_set_variable_t *set_variable;
    	efi_set_variable_t *set_variable_nonblocking;
    	efi_query_variable_store_t *query_variable_store;
    };
    
    struct efivars {
    	/*
    	 * ->lock protects two things:
    	 * 1) efivarfs_list and efivars_sysfs_list
    	 * 2) ->ops calls
    	 */
    	spinlock_t lock;
    	struct kset *kset;
    	struct kobject *kobject;
    	const struct efivar_operations *ops;
    };
    
    /*
     * The maximum size of VariableName + Data = 1024
     * Therefore, it's reasonable to save that much
     * space in each part of the structure,
     * and we use a page for reading/writing.
     */
    
    #define EFI_VAR_NAME_LEN	1024
    
    struct efi_variable {
    	efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
    	efi_guid_t    VendorGuid;
    	unsigned long DataSize;
    	__u8          Data[1024];
    	efi_status_t  Status;
    	__u32         Attributes;
    } __attribute__((packed));
    
    struct efivar_entry {
    	struct efi_variable var;
    	struct list_head list;
    	struct kobject kobj;
    	bool scanning;
    	bool deleting;
    };
    
    struct efi_simple_text_output_protocol_32 {
    	u32 reset;
    	u32 output_string;
    	u32 test_string;
    };
    
    struct efi_simple_text_output_protocol_64 {
    	u64 reset;
    	u64 output_string;
    	u64 test_string;
    };
    
    struct efi_simple_text_output_protocol {
    	void *reset;
    	efi_status_t (*output_string)(void *, void *);
    	void *test_string;
    };
    
    extern struct list_head efivar_sysfs_list;
    
    static inline void
    efivar_unregister(struct efivar_entry *var)
    {
    	kobject_put(&var->kobj);
    }
    
    int efivars_register(struct efivars *efivars,
    		     const struct efivar_operations *ops,
    		     struct kobject *kobject);
    int efivars_unregister(struct efivars *efivars);
    struct kobject *efivars_kobject(void);
    
    int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
    		void *data, bool atomic, bool duplicates,
    		struct list_head *head);
    
    void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
    void efivar_entry_remove(struct efivar_entry *entry);
    
    int __efivar_entry_delete(struct efivar_entry *entry);
    int efivar_entry_delete(struct efivar_entry *entry);
    
    int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
    int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
    		       unsigned long *size, void *data);
    int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
    		     unsigned long *size, void *data);
    int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
    		     unsigned long size, void *data, struct list_head *head);
    int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
    			      unsigned long *size, void *data, bool *set);
    int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
    			  bool block, unsigned long size, void *data);
    
    void efivar_entry_iter_begin(void);
    void efivar_entry_iter_end(void);
    
    int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
    			struct list_head *head, void *data,
    			struct efivar_entry **prev);
    int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
    		      struct list_head *head, void *data);
    
    struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
    				       struct list_head *head, bool remove);
    
    bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
    		     unsigned long data_size);
    bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
    				  size_t len);
    
    extern struct work_struct efivar_work;
    void efivar_run_worker(void);
    
    #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
    int efivars_sysfs_init(void);
    
    #define EFIVARS_DATA_SIZE_MAX 1024
    
    #endif /* CONFIG_EFI_VARS */
    
    #ifdef CONFIG_EFI_RUNTIME_MAP
    int efi_runtime_map_init(struct kobject *);
    void efi_runtime_map_setup(void *, int, u32);
    int efi_get_runtime_map_size(void);
    int efi_get_runtime_map_desc_size(void);
    int efi_runtime_map_copy(void *buf, size_t bufsz);
    #else
    static inline int efi_runtime_map_init(struct kobject *kobj)
    {
    	return 0;
    }
    
    static inline void
    efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
    
    static inline int efi_get_runtime_map_size(void)
    {
    	return 0;
    }
    
    static inline int efi_get_runtime_map_desc_size(void)
    {
    	return 0;
    }
    
    static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
    {
    	return 0;
    }
    
    #endif
    
    /* prototypes shared between arch specific and generic stub code */
    
    #define pr_efi(sys_table, msg)     efi_printk(sys_table, "EFI stub: "msg)
    #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
    
    void efi_printk(efi_system_table_t *sys_table_arg, char *str);
    
    void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
    	      unsigned long addr);
    
    char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
    			  efi_loaded_image_t *image, int *cmd_line_len);
    
    efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
    				efi_memory_desc_t **map,
    				unsigned long *map_size,
    				unsigned long *desc_size,
    				u32 *desc_ver,
    				unsigned long *key_ptr);
    
    efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
    			   unsigned long size, unsigned long align,
    			   unsigned long *addr);
    
    efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
    			    unsigned long size, unsigned long align,
    			    unsigned long *addr, unsigned long max);
    
    efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
    				 unsigned long *image_addr,
    				 unsigned long image_size,
    				 unsigned long alloc_size,
    				 unsigned long preferred_addr,
    				 unsigned long alignment);
    
    efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
    				  efi_loaded_image_t *image,
    				  char *cmd_line, char *option_string,
    				  unsigned long max_addr,
    				  unsigned long *load_addr,
    				  unsigned long *load_size);
    
    efi_status_t efi_parse_options(char *cmdline);
    
    bool efi_runtime_disabled(void);
    #endif /* _LINUX_EFI_H */