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Edit File: efi.h

/* SPDX-License-Identifier: GPL-2.0 */ #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))) #define EFI_IS_ERROR(x) ((x) & (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; /* * The UEFI spec and EDK2 reference implementation both define EFI_GUID as * struct { u32 a; u16; b; u16 c; u8 d[8]; }; and so the implied alignment * is 32 bits not 8 bits like our guid_t. In some cases (i.e., on 32-bit ARM), * this means that firmware services invoked by the kernel may assume that * efi_guid_t* arguments are 32-bit aligned, and use memory accessors that * do not tolerate misalignment. So let's set the minimum alignment to 32 bits. * * Note that the UEFI spec as well as some comments in the EDK2 code base * suggest that EFI_GUID should be 64-bit aligned, but this appears to be * a mistake, given that no code seems to exist that actually enforces that * or relies on it. */ typedef guid_t efi_guid_t __aligned(__alignof__(u32)); #define EFI_GUID(a, b, c, d...) (efi_guid_t){ { \ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ (b) & 0xff, ((b) >> 8) & 0xff, \ (c) & 0xff, ((c) >> 8) & 0xff, d } } /* * 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; efi_capsule_header_t *capsule; int reset_type; long index; size_t count; size_t total_size; struct page **pages; phys_addr_t *phys; 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; u64 romsize; u32 romimage; } efi_pci_io_protocol_32_t; 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; u64 romsize; u64 romimage; } efi_pci_io_protocol_64_t; 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_t; #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; typedef struct { u32 get_capability; u32 get_event_log; u32 hash_log_extend_event; u32 submit_command; u32 get_active_pcr_banks; u32 set_active_pcr_banks; u32 get_result_of_set_active_pcr_banks; } efi_tcg2_protocol_32_t; typedef struct { u64 get_capability; u64 get_event_log; u64 hash_log_extend_event; u64 submit_command; u64 get_active_pcr_banks; u64 set_active_pcr_banks; u64 get_result_of_set_active_pcr_banks; } efi_tcg2_protocol_64_t; typedef u32 efi_tcg2_event_log_format; typedef struct { void *get_capability; efi_status_t (*get_event_log)(efi_handle_t, efi_tcg2_event_log_format, efi_physical_addr_t *, efi_physical_addr_t *, efi_bool_t *); void *hash_log_extend_event; void *submit_command; void *get_active_pcr_banks; void *set_active_pcr_banks; void *get_result_of_set_active_pcr_banks; } efi_tcg2_protocol_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_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) #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) #define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28) #define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72) #define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed) /* * 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) #define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa) #define LINUX_EFI_TPM_FINAL_LOG_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25) #define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2) #define LINUX_EFI_MOK_VARIABLE_TABLE_GUID EFI_GUID(0xc451ed2b, 0x9694, 0x45d3, 0xba, 0xba, 0xed, 0x9f, 0x89, 0x88, 0xa3, 0x89) /* OEM GUIDs */ #define DELLEMC_EFI_RCI2_TABLE_GUID EFI_GUID(0x2d9f28a2, 0xa886, 0x456a, 0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55) 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; u32 secure_boot; }; 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 { u64 revision; u32 open_volume; } efi_file_io_interface_32_t; typedef struct { u64 revision; u64 open_volume; } efi_file_io_interface_64_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; typedef struct { efi_guid_t signature_owner; u8 signature_data[]; } efi_signature_data_t; typedef struct { efi_guid_t signature_type; u32 signature_list_size; u32 signature_header_size; u32 signature_size; u8 signature_header[]; /* efi_signature_data_t signatures[][] */ } efi_signature_list_t; typedef u8 efi_sha256_hash_t[32]; typedef struct { efi_sha256_hash_t to_be_signed_hash; efi_time_t time_of_revocation; } efi_cert_x509_sha256_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 boot_info; /* boot info table */ unsigned long hcdp; /* HCDP table */ unsigned long uga; /* UGA 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 */ unsigned long tpm_log; /* TPM2 Event Log table */ unsigned long tpm_final_log; /* TPM2 Final Events Log table */ unsigned long mokvar_table; /* MOK variable config table */ unsigned long mem_reserve; /* Linux EFI memreserve table */ efi_get_time_t *get_time; efi_set_time_t *set_time; efi_get_wakeup_time_t *get_wakeup_time; efi_set_wakeup_time_t *set_wakeup_time; efi_get_variable_t *get_variable; efi_get_next_variable_t *get_next_variable; efi_set_variable_t *set_variable; efi_set_variable_t *set_variable_nonblocking; efi_query_variable_info_t *query_variable_info; efi_query_variable_info_t *query_variable_info_nonblocking; efi_update_capsule_t *update_capsule; efi_query_capsule_caps_t *query_capsule_caps; efi_get_next_high_mono_count_t *get_next_high_mono_count; efi_reset_system_t *reset_system; efi_set_virtual_address_map_t *set_virtual_address_map; struct efi_memory_map memmap; unsigned long flags; } efi; extern struct mm_struct efi_mm; 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); #ifdef CONFIG_EFI extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ #else static inline void efi_enter_virtual_mode (void) {} #endif #ifdef CONFIG_X86 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size, bool nonblocking); extern void efi_find_mirror(void); #else 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 int efi_mem_reserve_persistent(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 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); typedef void (*efi_element_handler_t)(const char *source, const void *element_data, size_t element_size); extern int __init parse_efi_signature_list( const char *source, const void *data, size_t size, efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)); /** * 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? */ #define EFI_SECURE_BOOT 11 /* Are we in Secure Boot mode? */ enum efi_secureboot_mode { efi_secureboot_mode_unset, efi_secureboot_mode_unknown, efi_secureboot_mode_disabled, efi_secureboot_mode_enabled, }; #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 void __init efi_set_secure_boot(enum efi_secureboot_mode mode); #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 void efi_set_secure_boot(enum efi_secureboot_mode mode) {} #endif extern int efi_status_to_err(efi_status_t status); extern const char *efi_status_to_str(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_above(efi_system_table_t *sys_table_arg, unsigned long size, unsigned long align, unsigned long *addr, unsigned long min); static inline efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, unsigned long size, unsigned long align, unsigned long *addr) { /* * Don't allocate at 0x0. It will confuse code that * checks pointers against NULL. Skip the first 8 * bytes so we start at a nice even number. */ return efi_low_alloc_above(sys_table_arg, size, align, addr, 0x8); } 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, unsigned long min_addr); 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); #ifdef CONFIG_EFI extern bool efi_runtime_disabled(void); #else static inline bool efi_runtime_disabled(void) { return true; } #endif extern void efi_call_virt_check_flags(unsigned long flags, const char *call); extern unsigned long efi_call_virt_save_flags(void); 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 void efi_retrieve_tpm2_eventlog(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(); \ \ __flags = efi_call_virt_save_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(); \ \ __flags = efi_call_virt_save_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[]; }; struct linux_efi_tpm_eventlog { u32 size; u32 final_events_preboot_size; u8 version; u8 log[]; }; extern int efi_tpm_eventlog_init(void); struct efi_tcg2_final_events_table { u64 version; u64 nr_events; u8 events[]; }; extern int efi_tpm_final_log_size; extern unsigned long rci2_table_phys; /* * efi_runtime_service() function identifiers. * "NONE" is used by efi_recover_from_page_fault() to check if the page * fault happened while executing an efi runtime service. */ enum efi_rts_ids { EFI_NONE, EFI_GET_TIME, EFI_SET_TIME, EFI_GET_WAKEUP_TIME, EFI_SET_WAKEUP_TIME, EFI_GET_VARIABLE, EFI_GET_NEXT_VARIABLE, EFI_SET_VARIABLE, EFI_QUERY_VARIABLE_INFO, EFI_GET_NEXT_HIGH_MONO_COUNT, EFI_RESET_SYSTEM, EFI_UPDATE_CAPSULE, EFI_QUERY_CAPSULE_CAPS, }; /* * efi_runtime_work: Details of EFI Runtime Service work * @arg<1-5>: EFI Runtime Service function arguments * @status: Status of executing EFI Runtime Service * @efi_rts_id: EFI Runtime Service function identifier * @efi_rts_comp: Struct used for handling completions */ struct efi_runtime_work { void *arg1; void *arg2; void *arg3; void *arg4; void *arg5; efi_status_t status; struct work_struct work; enum efi_rts_ids efi_rts_id; struct completion efi_rts_comp; }; extern struct efi_runtime_work efi_rts_work; /* Workqueue to queue EFI Runtime Services */ extern struct workqueue_struct *efi_rts_wq; struct linux_efi_memreserve { int size; // allocated size of the array atomic_t count; // number of entries used phys_addr_t next; // pa of next struct instance struct { phys_addr_t base; phys_addr_t size; } entry[0]; }; #define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \ (count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0])) #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ / sizeof(((struct linux_efi_memreserve *)0)->entry[0])) /* * The LINUX_EFI_MOK_VARIABLE_TABLE_GUID config table can be provided * to the kernel by an EFI boot loader. The table contains a packed * sequence of these entries, one for each named MOK variable. * The sequence is terminated by an entry with a completely NULL * name and 0 data size. */ struct efi_mokvar_table_entry { char name[256]; u64 data_size; u8 data[]; } __attribute((packed)); #ifdef CONFIG_LOAD_UEFI_KEYS extern void __init efi_mokvar_table_init(void); extern struct efi_mokvar_table_entry *efi_mokvar_entry_next( struct efi_mokvar_table_entry **mokvar_entry); extern struct efi_mokvar_table_entry *efi_mokvar_entry_find(const char *name); #else static inline void efi_mokvar_table_init(void) { } static inline struct efi_mokvar_table_entry *efi_mokvar_entry_next( struct efi_mokvar_table_entry **mokvar_entry) { return NULL; } static inline struct efi_mokvar_table_entry *efi_mokvar_entry_find( const char *name) { return NULL; } #endif #endif /* _LINUX_EFI_H */