/* SPDX-License-Identifier: GPL-2.0 */ /* Relevant definitions from linux/efi.h. */ #ifndef __LINUX_UEFI_H #define __LINUX_UEFI_H #include "libcflat.h" #ifndef __packed # define __packed __attribute__((__packed__)) #endif #define BITS_PER_LONG 64 #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_TIMEOUT (18 | (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; #define __efiapi __attribute__((ms_abi)) /* * 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 struct { u8 b[16]; } guid_t __attribute__((aligned(__alignof__(u32)))); typedef guid_t efi_guid_t; #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 } } #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) typedef struct { efi_guid_t guid; void *table; } efi_config_table_t; /* * 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_SP ((u64)0x0000000000040000ULL) /* soft reserved */ #define EFI_MEMORY_CPU_CRYPTO ((u64)0x0000000000080000ULL) /* supports encryption */ #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; /* * 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); /* * 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 void *efi_event_t; /* Note that notifications won't work in mixed mode */ typedef void (__efiapi *efi_event_notify_t)(efi_event_t, void *); typedef enum { EfiTimerCancel, EfiTimerPeriodic, EfiTimerRelative } EFI_TIMER_DELAY; /* * 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; } __packed; typedef struct efi_generic_dev_path efi_device_path_protocol_t; /* * EFI Boot Services table */ typedef struct { efi_table_hdr_t hdr; void *raise_tpl; void *restore_tpl; efi_status_t(__efiapi *allocate_pages)(int, int, unsigned long, efi_physical_addr_t *); efi_status_t(__efiapi *free_pages)(efi_physical_addr_t, unsigned long); efi_status_t(__efiapi *get_memory_map)(unsigned long *, void *, unsigned long *, unsigned long *, u32 *); efi_status_t(__efiapi *allocate_pool)(int, unsigned long, void **); efi_status_t(__efiapi *free_pool)(void *); efi_status_t(__efiapi *create_event)(u32, unsigned long, efi_event_notify_t, void *, efi_event_t *); efi_status_t(__efiapi *set_timer)(efi_event_t, EFI_TIMER_DELAY, u64); efi_status_t(__efiapi *wait_for_event)(unsigned long, efi_event_t *, unsigned long *); void *signal_event; efi_status_t(__efiapi *close_event)(efi_event_t); void *check_event; void *install_protocol_interface; void *reinstall_protocol_interface; void *uninstall_protocol_interface; efi_status_t(__efiapi *handle_protocol)(efi_handle_t, efi_guid_t *, void **); void *__reserved; void *register_protocol_notify; efi_status_t(__efiapi *locate_handle)(int, efi_guid_t *, void *, unsigned long *, efi_handle_t *); efi_status_t(__efiapi *locate_device_path)(efi_guid_t *, efi_device_path_protocol_t **, efi_handle_t *); efi_status_t(__efiapi *install_configuration_table)(efi_guid_t *, void *); void *load_image; void *start_image; efi_status_t(__efiapi *exit)(efi_handle_t, efi_status_t, unsigned long, efi_char16_t *); void *unload_image; efi_status_t(__efiapi *exit_boot_services)(efi_handle_t, unsigned long); void *get_next_monotonic_count; efi_status_t(__efiapi *stall)(unsigned long); void *set_watchdog_timer; void *connect_controller; efi_status_t(__efiapi *disconnect_controller)(efi_handle_t, efi_handle_t, efi_handle_t); void *open_protocol; void *close_protocol; void *open_protocol_information; void *protocols_per_handle; void *locate_handle_buffer; efi_status_t(__efiapi *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; /* * 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 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 __efiapi *get_time; efi_set_time_t __efiapi *set_time; efi_get_wakeup_time_t __efiapi *get_wakeup_time; efi_set_wakeup_time_t __efiapi *set_wakeup_time; efi_set_virtual_address_map_t __efiapi *set_virtual_address_map; void *convert_pointer; efi_get_variable_t __efiapi *get_variable; efi_get_next_variable_t __efiapi *get_next_variable; efi_set_variable_t __efiapi *set_variable; efi_get_next_high_mono_count_t __efiapi *get_next_high_mono_count; efi_reset_system_t __efiapi *reset_system; efi_update_capsule_t __efiapi *update_capsule; efi_query_capsule_caps_t __efiapi *query_capsule_caps; efi_query_variable_info_t __efiapi *query_variable_info; } efi_runtime_services_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 union efi_simple_text_input_protocol efi_simple_text_input_protocol_t; typedef union efi_simple_text_output_protocol efi_simple_text_output_protocol_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; efi_simple_text_input_protocol_t *con_in; unsigned long con_out_handle; efi_simple_text_output_protocol_t *con_out; unsigned long stderr_handle; unsigned long stderr; efi_runtime_services_t *runtime; efi_boot_services_t *boottime; unsigned long nr_tables; unsigned long tables; } efi_system_table_t; struct efi_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; }; #define efi_bs_call(func, ...) efi_system_table->boottime->func(__VA_ARGS__) #define efi_rs_call(func, ...) efi_system_table->runtime->func(__VA_ARGS__) #endif /* __LINUX_UEFI_H */