cregit-Linux how code gets into the kernel

Release 4.12 include/linux/efi.h

Directory: include/linux
#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/range.h>
#include <linux/reboot.h>
#include <linux/uuid.h>
#include <linux/screen_info.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_ABORTED		(21 | (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 uuid_le efi_guid_t;


#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
	UUID_LE(a, b, c, 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)

#define EFI_PAGES_MAX		(U64_MAX >> 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;


struct efi_boot_memmap {
	
efi_memory_desc_t	**map;
	
unsigned long		*map_size;
	
unsigned long		*desc_size;
	
u32			*desc_ver;
	
unsigned long		*key_ptr;
	
unsigned long		*buff_size;
};

/*
 * EFI capsule flags
 */

#define EFI_CAPSULE_PERSIST_ACROSS_RESET	0x00010000

#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE	0x00020000

#define EFI_CAPSULE_INITIATE_RESET		0x00040000

/*
 * 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;
	
efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
				      unsigned long *, efi_handle_t *);
	
void *locate_device_path;
	
efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
	
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

typedef struct {
	
u32 version;
	
u32 get;
	
u32 set;
	
u32 del;
	
u32 get_all;

} apple_properties_protocol_32_t;

typedef struct {
	
u64 version;
	
u64 get;
	
u64 set;
	
u64 del;
	
u64 get_all;

} apple_properties_protocol_64_t;

/*
 * 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 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);

typedef struct {
	
efi_table_hdr_t			hdr;
	
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_set_virtual_address_map_t	*set_virtual_address_map;
	
void				*convert_pointer;
	
efi_get_variable_t		*get_variable;
	
efi_get_next_variable_t		*get_next_variable;
	
efi_set_variable_t		*set_variable;
	
efi_get_next_high_mono_count_t	*get_next_high_mono_count;
	
efi_reset_system_t		*reset_system;
	
efi_update_capsule_t		*update_capsule;
	
efi_query_capsule_caps_t	*query_capsule_caps;
	
efi_query_variable_info_t	*query_variable_info;

} efi_runtime_services_t;

void efi_native_runtime_setup(void);

/*
 * EFI Configuration Table and GUID definitions
 *
 * These are all defined in a single line to make them easier to
 * grep for and to see them at a glance - while still having a
 * similar structure to the definitions in the spec.
 *
 * Here's how they are structured:
 *
 * GUID: 12345678-1234-1234-1234-123456789012
 * Spec:
 *      #define EFI_SOME_PROTOCOL_GUID \
 *        {0x12345678,0x1234,0x1234,\
 *          {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
 * Here:
 *      #define SOME_PROTOCOL_GUID              EFI_GUID(0x12345678, 0x1234, 0x1234,  0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
 *                                      ^ tabs                                      ^extra space
 *
 * Note that the 'extra space' separates the values at the same place
 * where the UEFI SPEC breaks the line.
 */

#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(0x09576e92, 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)

#define EFI_RNG_ALGORITHM_RAW			EFI_GUID(0xe43176d7, 0xb6e8, 0x4827,  0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)

#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID	EFI_GUID(0xdcfa911d, 0x26eb, 0x469f,  0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)

#define EFI_CONSOLE_OUT_DEVICE_GUID		EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4,  0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)

#define APPLE_PROPERTIES_PROTOCOL_GUID		EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb,  0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)


#define EFI_IMAGE_SECURITY_DATABASE_GUID	EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596,  0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)

#define EFI_SHIM_LOCK_GUID			EFI_GUID(0x605dab50, 0xe046, 0x4300,  0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)

/*
 * This GUID is used to pass to the kernel proper the struct screen_info
 * structure that was populated by the stub based on the GOP protocol instance
 * associated with ConOut
 */

#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID	EFI_GUID(0xe03fc20a, 0x85dc, 0x406e,  0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)

#define LINUX_EFI_LOADER_ENTRY_GUID		EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf,  0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)

#define LINUX_EFI_RANDOM_SEED_TABLE_GUID	EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2,  0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)

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;

/*
 * Architecture independent structure for describing a memory map for the
 * benefit of efi_memmap_init_early(), saving us the need to pass four
 * parameters.
 */

struct efi_memory_map_data {
	
phys_addr_t phys_map;
	
unsigned long size;
	
unsigned long desc_version;
	
unsigned long desc_size;
};


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;
	
bool late;
};


struct efi_mem_range {
	
struct range range;
	
u64 attribute;
};


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)

typedef struct {
	
u32 version;
	
u32 num_entries;
	
u32 desc_size;
	
u32 reserved;
	
efi_memory_desc_t entry[0];

} efi_memory_attributes_table_t;

/*
 * 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 */
	
unsigned long mem_attr_table;	/* memory attributes table */
	
unsigned long rng_seed;		/* UEFI firmware random seed */
	
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)); }

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static inline char * efi_guid_to_str(efi_guid_t *guid, char *out) { sprintf(out, "%pUl", guid->b); return out; }

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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 timespec64 *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) {}

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static inline void efi_free_boot_services(void) {}

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static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size, bool nonblocking) { return EFI_SUCCESS; }

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#endif extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries); extern int __init efi_memmap_init_early(struct efi_memory_map_data *data); extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size); extern void __init efi_memmap_unmap(void); extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map); extern int __init efi_memmap_split_count(efi_memory_desc_t *md, struct range *range); extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, void *buf, struct efi_mem_range *mem); 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) { }

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#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_mem_reserve(phys_addr_t addr, u64 size); extern void efi_initialize_iomem_resources(struct resource *code_resource, struct resource *data_resource, struct resource *bss_resource); extern void efi_reserve_boot_services(void); extern int efi_get_fdt_params(struct efi_fdt_params *params); 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) { }

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#endif /* * efi_memattr_perm_setter - arch specific callback function passed into * efi_memattr_apply_permissions() that updates the * mapping permissions described by the second * argument in the page tables referred to by the * first argument. */ typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); extern int efi_memattr_init(void); extern int efi_memattr_apply_permissions(struct mm_struct *mm, efi_memattr_perm_setter fn); /* Iterate through an efi_memory_map */ #define for_each_efi_memory_desc_in_map(m, md) \ for ((md) = (m)->map; \ (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ (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; }

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#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? */ #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ #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; }

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extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); #else
static inline bool efi_enabled(int feature) { return false; }

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static inline void efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}

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static inline bool efi_capsule_pending(int *reset_type) { return false; }

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#endif extern int efi_status_to_err(efi_status_t status); /* * 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 UUID_STRING_LEN /* * 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)); struct efi_dev_path { u8 type; /* can be replaced with unnamed */ u8 sub_type; /* struct efi_generic_dev_path; */ u16 length; /* once we've moved to -std=c11 */ union { struct { u32 hid; u32 uid; } acpi; struct { u8 fn; u8 dev; } pci; }; } __attribute ((packed)); #if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER) struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len); #endif
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; }

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Huang Ying42100.00%1100.00%
Total42100.00%1100.00%

/* * 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 { 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; }; typedef struct { u32 reset; u32 output_string; u32 test_string; } efi_simple_text_output_protocol_32_t; typedef struct { u64 reset; u64 output_string; u64 test_string; } efi_simple_text_output_protocol_64_t; struct efi_simple_text_output_protocol { void *reset; efi_status_t (*output_string)(void *, void *); void *test_string; }; #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 #define PIXEL_BIT_MASK 2 #define PIXEL_BLT_ONLY 3 #define PIXEL_FORMAT_MAX 4 struct efi_pixel_bitmask { u32 red_mask; u32 green_mask; u32 blue_mask; u32 reserved_mask; }; struct efi_graphics_output_mode_info { u32 version; u32 horizontal_resolution; u32 vertical_resolution; int pixel_format; struct efi_pixel_bitmask pixel_information; u32 pixels_per_scan_line; } __packed; struct efi_graphics_output_protocol_mode_32 { u32 max_mode; u32 mode; u32 info; u32 size_of_info; u64 frame_buffer_base; u32 frame_buffer_size; } __packed; struct efi_graphics_output_protocol_mode_64 { u32 max_mode; u32 mode; u64 info; u64 size_of_info; u64 frame_buffer_base; u64 frame_buffer_size; } __packed; struct efi_graphics_output_protocol_mode { u32 max_mode; u32 mode; unsigned long info; unsigned long size_of_info; u64 frame_buffer_base; unsigned long frame_buffer_size; } __packed; struct efi_graphics_output_protocol_32 { u32 query_mode; u32 set_mode; u32 blt; u32 mode; }; struct efi_graphics_output_protocol_64 { u64 query_mode; u64 set_mode; u64 blt; u64 mode; }; struct efi_graphics_output_protocol { unsigned long query_mode; unsigned long set_mode; unsigned long blt; struct efi_graphics_output_protocol_mode *mode; }; typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( struct efi_graphics_output_protocol *, u32, unsigned long *, struct efi_graphics_output_mode_info **); extern struct list_head efivar_sysfs_list;
static inline void efivar_unregister(struct efivar_entry *var) { kobject_put(&var->kobj); }

Contributors

PersonTokensPropCommitsCommitProp
Matt Fleming20100.00%1100.00%
Total20100.00%1100.00%

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 duplicates, struct list_head *head); int efivar_entry_add(struct efivar_entry *entry, struct list_head *head); int 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); int 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 */ extern bool efi_capsule_pending(int *reset_type); extern int efi_capsule_supported(efi_guid_t guid, u32 flags, size_t size, int *reset); extern int efi_capsule_update(efi_capsule_header_t *capsule, struct page **pages); #ifdef CONFIG_EFI_RUNTIME_MAP int efi_runtime_map_init(struct kobject *); 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; }

Contributors

PersonTokensPropCommitsCommitProp
Dave Young15100.00%1100.00%
Total15100.00%1100.00%


static inline int efi_get_runtime_map_size(void) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Vivek Goyal12100.00%1100.00%
Total12100.00%1100.00%


static inline int efi_get_runtime_map_desc_size(void) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Vivek Goyal12100.00%1100.00%
Total12100.00%1100.00%


static inline int efi_runtime_map_copy(void *buf, size_t bufsz) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Vivek Goyal17100.00%1100.00%
Total17100.00%1100.00%

#endif /* prototypes shared between arch specific and generic stub code */ 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, struct efi_boot_memmap *map); 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 const *cmdline); efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, struct screen_info *si, efi_guid_t *proto, unsigned long size); bool efi_runtime_disabled(void); extern void efi_call_virt_check_flags(unsigned long flags, const char *call); enum efi_secureboot_mode { efi_secureboot_mode_unset, efi_secureboot_mode_unknown, efi_secureboot_mode_disabled, efi_secureboot_mode_enabled, }; enum efi_secureboot_mode efi_get_secureboot(efi_system_table_t *sys_table); /* * Arch code can implement the following three template macros, avoiding * reptition for the void/non-void return cases of {__,}efi_call_virt(): * * * arch_efi_call_virt_setup() * * Sets up the environment for the call (e.g. switching page tables, * allowing kernel-mode use of floating point, if required). * * * arch_efi_call_virt() * * Performs the call. The last expression in the macro must be the call * itself, allowing the logic to be shared by the void and non-void * cases. * * * arch_efi_call_virt_teardown() * * Restores the usual kernel environment once the call has returned. */ #define efi_call_virt_pointer(p, f, args...) \ ({ \ efi_status_t __s; \ unsigned long __flags; \ \ arch_efi_call_virt_setup(); \ \ local_save_flags(__flags); \ __s = arch_efi_call_virt(p, f, args); \ efi_call_virt_check_flags(__flags, __stringify(f)); \ \ arch_efi_call_virt_teardown(); \ \ __s; \ }) #define __efi_call_virt_pointer(p, f, args...) \ ({ \ unsigned long __flags; \ \ arch_efi_call_virt_setup(); \ \ local_save_flags(__flags); \ arch_efi_call_virt(p, f, args); \ efi_call_virt_check_flags(__flags, __stringify(f)); \ \ arch_efi_call_virt_teardown(); \ }) typedef efi_status_t (*efi_exit_boot_map_processing)( efi_system_table_t *sys_table_arg, struct efi_boot_memmap *map, void *priv); efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table, void *handle, struct efi_boot_memmap *map, void *priv, efi_exit_boot_map_processing priv_func); struct linux_efi_random_seed { u32 size; u8 bits[]; }; #endif /* _LINUX_EFI_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Matt Fleming191235.34%2922.66%
David Mosberger-Tang78814.56%43.12%
Ard Biesheuvel71613.23%2217.19%
Matthew Garrett3817.04%75.47%
Roy Franz2254.16%21.56%
Björn Helgaas2153.97%53.91%
Lukas Wunner1252.31%32.34%
Olof Johansson1222.25%10.78%
Andrew Morton861.59%10.78%
Jeffrey Hugo811.50%21.56%
Peter Jones801.48%53.91%
Jesse Barnes681.26%10.78%
Vivek Goyal641.18%10.78%
Mike Waychison621.15%10.78%
Dave Young510.94%32.34%
Josh Triplett470.87%32.34%
Huang Ying450.83%10.78%
Alex Thorlton410.76%10.78%
Mark Salter390.72%21.56%
Leif Lindholm320.59%21.56%
Ingo Molnar270.50%10.78%
Laszlo Ersek240.44%21.56%
Taku Izumi230.43%10.78%
David Howells210.39%10.78%
Tom Gundersen160.30%10.78%
Tony Luck130.24%10.78%
Seiji Aguchi120.22%21.56%
Nicolai Stange100.18%10.78%
Borislav Petkov100.18%32.34%
Josh Boyer80.15%10.78%
Russ Anderson80.15%10.78%
Andy Shevchenko70.13%10.78%
Daniel Kiper60.11%10.78%
Robert Elliott50.09%10.78%
Bernhard Walle50.09%10.78%
Dan J Williams50.09%10.78%
Chun-Yi Lee50.09%10.78%
Sai Praneeth50.09%10.78%
Matt Tolentino40.07%10.78%
Sylvain Chouleur30.06%10.78%
Jeremy Compostella30.06%10.78%
Mika Kukkonen30.06%10.78%
Matthew Wilcox20.04%10.78%
Jesper Juhl20.04%10.78%
Jan Beulich10.02%10.78%
Joe Perches10.02%10.78%
Arnd Bergmann10.02%10.78%
David Vrabel10.02%10.78%
Total5411100.00%128100.00%
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