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linux-next/include/linux/efi.h
Linus Torvalds ae71948f39 Just a single conversion to the new UUID API for this merge window. 
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Merge tag 'uuid-for-4.14' of git://git.infradead.org/users/hch/uuid

Pull uuid updates from Christoph Hellwig:
 "Just a single conversion to the new UUID API for this merge window"

* tag 'uuid-for-4.14' of git://git.infradead.org/users/hch/uuid:
  efi: switch to use new generic UUID API
2017-09-12 13:27:21 -07:00

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#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 guid_t efi_guid_t;
#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
GUID_INIT(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
struct capsule_info {
efi_capsule_header_t header;
int reset_type;
long index;
size_t count;
size_t total_size;
phys_addr_t *pages;
size_t page_bytes_remain;
};
int __efi_capsule_setup_info(struct capsule_info *cap_info);
/*
* 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));
}
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 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) {}
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 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) { }
#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 int 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) { }
#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);
/*
* efi_early_memdesc_ptr - get the n-th EFI memmap descriptor
* @map: the start of efi memmap
* @desc_size: the size of space for each EFI memmap descriptor
* @n: the index of efi memmap descriptor
*
* EFI boot service provides the GetMemoryMap() function to get a copy of the
* current memory map which is an array of memory descriptors, each of
* which describes a contiguous block of memory. It also gets the size of the
* map, and the size of each descriptor, etc.
*
* Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of
* each descriptor might not be equal to sizeof(efi_memory_memdesc_t),
* since efi_memory_memdesc_t may be extended in the future. Thus the OS
* MUST use the returned size of the descriptor to find the start of each
* efi_memory_memdesc_t in the memory map array. This should only be used
* during bootup since for_each_efi_memory_desc_xxx() is available after the
* kernel initializes the EFI subsystem to set up struct efi_memory_map.
*/
#define efi_early_memdesc_ptr(map, desc_size, n) \
(efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size)))
/* 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;
}
#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;
}
extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
extern bool efi_is_table_address(unsigned long phys_addr);
#else
static inline bool efi_enabled(int feature)
{
return false;
}
static inline void
efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
static inline bool
efi_capsule_pending(int *reset_type)
{
return false;
}
static inline bool efi_is_table_address(unsigned long phys_addr)
{
return false;
}
#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;
}
/*
* 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);
}
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,
phys_addr_t *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;
}
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 */
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);
#ifdef CONFIG_RESET_ATTACK_MITIGATION
void efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg);
#else
static inline void
efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg) { }
#endif
/*
* 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);
#define EFI_RANDOM_SEED_SIZE 64U
struct linux_efi_random_seed {
u32 size;
u8 bits[];
};
#endif /* _LINUX_EFI_H */
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