/* SPDX-License-Identifier: GPL-2.0+ */ /* * EFI application loader * * Copyright (c) 2016 Alexander Graf */ #ifndef _EFI_LOADER_H #define _EFI_LOADER_H 1 #include #include #include #include #include #include #include #include #include struct blk_desc; struct jmp_buf_data; static inline int guidcmp(const void *g1, const void *g2) { return memcmp(g1, g2, sizeof(efi_guid_t)); } static inline void *guidcpy(void *dst, const void *src) { return memcpy(dst, src, sizeof(efi_guid_t)); } #if CONFIG_IS_ENABLED(EFI_LOADER) /** * __efi_runtime_data - declares a non-const variable for EFI runtime section * * This macro indicates that a variable is non-const and should go into the * EFI runtime section, and thus still be available when the OS is running. * * Only use on variables not declared const. * * Example: * * :: * * static __efi_runtime_data my_computed_table[256]; */ #define __efi_runtime_data __section(".data.efi_runtime") /** * __efi_runtime_rodata - declares a read-only variable for EFI runtime section * * This macro indicates that a variable is read-only (const) and should go into * the EFI runtime section, and thus still be available when the OS is running. * * Only use on variables also declared const. * * Example: * * :: * * static const __efi_runtime_rodata my_const_table[] = { 1, 2, 3 }; */ #define __efi_runtime_rodata __section(".rodata.efi_runtime") /** * __efi_runtime - declares a function for EFI runtime section * * This macro indicates that a function should go into the EFI runtime section, * and thus still be available when the OS is running. * * Example: * * :: * * static __efi_runtime compute_my_table(void); */ #define __efi_runtime __section(".text.efi_runtime") /* * Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region * to make it available at runtime */ efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len); /* * Special case handler for error/abort that just tries to dtrt to get * back to u-boot world */ void efi_restore_gd(void); /* Call this to unset the current device name */ void efi_clear_bootdev(void); /* Call this to set the current device name */ void efi_set_bootdev(const char *dev, const char *devnr, const char *path, void *buffer, size_t buffer_size); /* Called by networking code to memorize the dhcp ack package */ void efi_net_set_dhcp_ack(void *pkt, int len); /* Print information about all loaded images */ void efi_print_image_infos(void *pc); /* Hook at initialization */ efi_status_t efi_launch_capsules(void); #else /* CONFIG_IS_ENABLED(EFI_LOADER) */ /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */ #define __efi_runtime_data #define __efi_runtime_rodata #define __efi_runtime static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len) { return EFI_SUCCESS; } /* No loader configured, stub out EFI_ENTRY */ static inline void efi_restore_gd(void) { } static inline void efi_clear_bootdev(void) { } static inline void efi_set_bootdev(const char *dev, const char *devnr, const char *path, void *buffer, size_t buffer_size) { } static inline void efi_net_set_dhcp_ack(void *pkt, int len) { } static inline void efi_print_image_infos(void *pc) { } static inline efi_status_t efi_launch_capsules(void) { return EFI_SUCCESS; } #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */ /* Maximum number of configuration tables */ #define EFI_MAX_CONFIGURATION_TABLES 16 /* GUID used by the root node */ #define U_BOOT_GUID \ EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \ 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b) /* GUID used as root for blkmap devices */ #define U_BOOT_BLKMAP_DEV_GUID \ EFI_GUID(0x4cad859d, 0xd644, 0x42ff, \ 0x87, 0x0b, 0xc0, 0x2e, 0xac, 0x05, 0x58, 0x63) /* GUID used as host device on sandbox */ #define U_BOOT_HOST_DEV_GUID \ EFI_GUID(0xbbe4e671, 0x5773, 0x4ea1, \ 0x9a, 0xab, 0x3a, 0x7d, 0xbf, 0x40, 0xc4, 0x82) /* GUID used as root for virtio devices */ #define U_BOOT_VIRTIO_DEV_GUID \ EFI_GUID(0x63293792, 0xadf5, 0x9325, \ 0xb9, 0x9f, 0x4e, 0x0e, 0x45, 0x5c, 0x1b, 0x1e) /* GUID for the auto generated boot menu entry */ #define EFICONFIG_AUTO_GENERATED_ENTRY_GUID \ EFI_GUID(0x8108ac4e, 0x9f11, 0x4d59, \ 0x85, 0x0e, 0xe2, 0x1a, 0x52, 0x2c, 0x59, 0xb2) /* Use internal device tree when starting UEFI application */ #define EFI_FDT_USE_INTERNAL NULL /* Root node */ extern efi_handle_t efi_root; /* Set to EFI_SUCCESS when initialized */ extern efi_status_t efi_obj_list_initialized; /* Flag used by the selftest to avoid detaching devices in ExitBootServices() */ extern bool efi_st_keep_devices; /* EFI system partition */ extern struct efi_system_partition { enum uclass_id uclass_id; int devnum; u8 part; } efi_system_partition; int __efi_entry_check(void); int __efi_exit_check(void); const char *__efi_nesting(void); const char *__efi_nesting_inc(void); const char *__efi_nesting_dec(void); /* * Enter the u-boot world from UEFI: */ #define EFI_ENTRY(format, ...) do { \ assert(__efi_entry_check()); \ debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \ __func__, ##__VA_ARGS__); \ } while(0) /* * Exit the u-boot world back to UEFI: */ #define EFI_EXIT(ret) ({ \ typeof(ret) _r = ret; \ debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \ __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \ assert(__efi_exit_check()); \ _r; \ }) /* * Call non-void UEFI function from u-boot and retrieve return value: */ #define EFI_CALL(exp) ({ \ debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ assert(__efi_exit_check()); \ typeof(exp) _r = exp; \ assert(__efi_entry_check()); \ debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \ (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \ _r; \ }) /* * Call void UEFI function from u-boot: */ #define EFI_CALL_VOID(exp) do { \ debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ assert(__efi_exit_check()); \ exp; \ assert(__efi_entry_check()); \ debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \ } while(0) /* * Write an indented message with EFI prefix */ #define EFI_PRINT(format, ...) ({ \ debug("%sEFI: " format, __efi_nesting(), \ ##__VA_ARGS__); \ }) #ifdef CONFIG_SYS_CACHELINE_SIZE #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE #else /* Just use the greatest cache flush alignment requirement I'm aware of */ #define EFI_CACHELINE_SIZE 128 #endif /* max bootmenu title size for volume selection */ #define BOOTMENU_DEVICE_NAME_MAX 16 /* Key identifying current memory map */ extern efi_uintn_t efi_memory_map_key; extern struct efi_runtime_services efi_runtime_services; extern struct efi_system_table systab; extern struct efi_simple_text_output_protocol efi_con_out; extern struct efi_simple_text_input_protocol efi_con_in; extern struct efi_console_control_protocol efi_console_control; extern const struct efi_device_path_to_text_protocol efi_device_path_to_text; /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */ extern const struct efi_device_path_utilities_protocol efi_device_path_utilities; /* current version of the EFI_UNICODE_COLLATION_PROTOCOL */ extern const struct efi_unicode_collation_protocol efi_unicode_collation_protocol2; extern const struct efi_hii_config_routing_protocol efi_hii_config_routing; extern const struct efi_hii_config_access_protocol efi_hii_config_access; extern const struct efi_hii_database_protocol efi_hii_database; extern const struct efi_hii_string_protocol efi_hii_string; uint16_t *efi_dp_str(struct efi_device_path *dp); /* GUID for the auto generated boot menu entry */ extern const efi_guid_t efi_guid_bootmenu_auto_generated; /* GUID of the U-Boot root node */ extern const efi_guid_t efi_u_boot_guid; #ifdef CONFIG_SANDBOX /* GUID of U-Boot host device on sandbox */ extern const efi_guid_t efi_guid_host_dev; #endif /* GUID of the EFI_BLOCK_IO_PROTOCOL */ extern const efi_guid_t efi_block_io_guid; extern const efi_guid_t efi_global_variable_guid; extern const efi_guid_t efi_guid_console_control; extern const efi_guid_t efi_guid_device_path; /* GUID of the EFI system partition */ extern const efi_guid_t efi_system_partition_guid; /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */ extern const efi_guid_t efi_guid_driver_binding_protocol; /* event group ExitBootServices() invoked */ extern const efi_guid_t efi_guid_event_group_exit_boot_services; /* event group SetVirtualAddressMap() invoked */ extern const efi_guid_t efi_guid_event_group_virtual_address_change; /* event group memory map changed */ extern const efi_guid_t efi_guid_event_group_memory_map_change; /* event group boot manager about to boot */ extern const efi_guid_t efi_guid_event_group_ready_to_boot; /* event group ResetSystem() invoked (before ExitBootServices) */ extern const efi_guid_t efi_guid_event_group_reset_system; /* event group return to efibootmgr */ extern const efi_guid_t efi_guid_event_group_return_to_efibootmgr; /* GUID of the device tree table */ extern const efi_guid_t efi_guid_fdt; extern const efi_guid_t efi_guid_loaded_image; extern const efi_guid_t efi_guid_loaded_image_device_path; extern const efi_guid_t efi_guid_device_path_to_text_protocol; extern const efi_guid_t efi_simple_file_system_protocol_guid; extern const efi_guid_t efi_file_info_guid; /* GUID for file system information */ extern const efi_guid_t efi_file_system_info_guid; extern const efi_guid_t efi_guid_device_path_utilities_protocol; /* GUID of the deprecated Unicode collation protocol */ extern const efi_guid_t efi_guid_unicode_collation_protocol; /* GUIDs of the Load File and Load File2 protocol */ extern const efi_guid_t efi_guid_load_file_protocol; extern const efi_guid_t efi_guid_load_file2_protocol; /* GUID of the Unicode collation protocol */ extern const efi_guid_t efi_guid_unicode_collation_protocol2; extern const efi_guid_t efi_guid_hii_config_routing_protocol; extern const efi_guid_t efi_guid_hii_config_access_protocol; extern const efi_guid_t efi_guid_hii_database_protocol; extern const efi_guid_t efi_guid_hii_string_protocol; /* GUIDs for authentication */ extern const efi_guid_t efi_guid_image_security_database; extern const efi_guid_t efi_guid_sha256; extern const efi_guid_t efi_guid_cert_x509; extern const efi_guid_t efi_guid_cert_x509_sha256; extern const efi_guid_t efi_guid_cert_x509_sha384; extern const efi_guid_t efi_guid_cert_x509_sha512; extern const efi_guid_t efi_guid_cert_type_pkcs7; /* GUID of RNG protocol */ extern const efi_guid_t efi_guid_rng_protocol; /* GUID of capsule update result */ extern const efi_guid_t efi_guid_capsule_report; /* GUID of firmware management protocol */ extern const efi_guid_t efi_guid_firmware_management_protocol; /* GUID for the ESRT */ extern const efi_guid_t efi_esrt_guid; /* GUID of the SMBIOS table */ extern const efi_guid_t smbios_guid; /*GUID of console */ extern const efi_guid_t efi_guid_text_input_protocol; extern const efi_guid_t efi_guid_text_output_protocol; extern char __efi_runtime_start[], __efi_runtime_stop[]; extern char __efi_runtime_rel_start[], __efi_runtime_rel_stop[]; /** * struct efi_open_protocol_info_item - open protocol info item * * When a protocol is opened a open protocol info entry is created. * These are maintained in a list. * * @link: link to the list of open protocol info entries of a protocol * @info: information about the opening of a protocol */ struct efi_open_protocol_info_item { struct list_head link; struct efi_open_protocol_info_entry info; }; /** * struct efi_handler - single protocol interface of a handle * * When the UEFI payload wants to open a protocol on an object to get its * interface (usually a struct with callback functions), this struct maps the * protocol GUID to the respective protocol interface * * @link: link to the list of protocols of a handle * @guid: GUID of the protocol * @protocol_interface: protocol interface * @open_infos: link to the list of open protocol info items */ struct efi_handler { struct list_head link; const efi_guid_t guid; void *protocol_interface; struct list_head open_infos; }; /** * enum efi_object_type - type of EFI object * * In UnloadImage we must be able to identify if the handle relates to a * started image. */ enum efi_object_type { /** @EFI_OBJECT_TYPE_UNDEFINED: undefined image type */ EFI_OBJECT_TYPE_UNDEFINED = 0, /** @EFI_OBJECT_TYPE_U_BOOT_FIRMWARE: U-Boot firmware */ EFI_OBJECT_TYPE_U_BOOT_FIRMWARE, /** @EFI_OBJECT_TYPE_LOADED_IMAGE: loaded image (not started) */ EFI_OBJECT_TYPE_LOADED_IMAGE, /** @EFI_OBJECT_TYPE_STARTED_IMAGE: started image */ EFI_OBJECT_TYPE_STARTED_IMAGE, }; /** * struct efi_object - dereferenced EFI handle * * @link: pointers to put the handle into a linked list * @protocols: linked list with the protocol interfaces installed on this * handle * @type: image type if the handle relates to an image * @dev: pointer to the DM device which is associated with this EFI handle * * UEFI offers a flexible and expandable object model. The objects in the UEFI * API are devices, drivers, and loaded images. struct efi_object is our storage * structure for these objects. * * When including this structure into a larger structure always put it first so * that when deleting a handle the whole encompassing structure can be freed. * * A pointer to this structure is referred to as a handle. Typedef efi_handle_t * has been created for such pointers. */ struct efi_object { /* Every UEFI object is part of a global object list */ struct list_head link; /* The list of protocols */ struct list_head protocols; enum efi_object_type type; struct udevice *dev; }; enum efi_image_auth_status { EFI_IMAGE_AUTH_FAILED = 0, EFI_IMAGE_AUTH_PASSED, }; /** * struct efi_loaded_image_obj - handle of a loaded image * * @header: EFI object header * @exit_status: exit status passed to Exit() * @exit_data_size: exit data size passed to Exit() * @exit_data: exit data passed to Exit() * @exit_jmp: long jump buffer for returning from started image * @entry: entry address of the relocated image * @image_type: indicates if the image is an applicition or a driver * @auth_status: indicates if the image is authenticated */ struct efi_loaded_image_obj { struct efi_object header; efi_status_t *exit_status; efi_uintn_t *exit_data_size; u16 **exit_data; struct jmp_buf_data *exit_jmp; EFIAPI efi_status_t (*entry)(efi_handle_t image_handle, struct efi_system_table *st); u16 image_type; enum efi_image_auth_status auth_status; }; /** * struct efi_event * * @link: Link to list of all events * @queue_link: Link to the list of queued events * @type: Type of event, see efi_create_event * @notify_tpl: Task priority level of notifications * @notify_function: Function to call when the event is triggered * @notify_context: Data to be passed to the notify function * @group: Event group * @trigger_time: Period of the timer * @trigger_next: Next time to trigger the timer * @trigger_type: Type of timer, see efi_set_timer * @is_signaled: The event occurred. The event is in the signaled state. */ struct efi_event { struct list_head link; struct list_head queue_link; uint32_t type; efi_uintn_t notify_tpl; void (EFIAPI *notify_function)(struct efi_event *event, void *context); void *notify_context; const efi_guid_t *group; u64 trigger_next; u64 trigger_time; enum efi_timer_delay trigger_type; bool is_signaled; }; /* This list contains all UEFI objects we know of */ extern struct list_head efi_obj_list; /* List of all events */ extern struct list_head efi_events; /** * struct efi_protocol_notification - handle for notified protocol * * When a protocol interface is installed for which an event was registered with * the RegisterProtocolNotify() service this structure is used to hold the * handle on which the protocol interface was installed. * * @link: link to list of all handles notified for this event * @handle: handle on which the notified protocol interface was installed */ struct efi_protocol_notification { struct list_head link; efi_handle_t handle; }; /** * struct efi_register_notify_event - event registered by * RegisterProtocolNotify() * * The address of this structure serves as registration value. * * @link: link to list of all registered events * @event: registered event. The same event may registered for multiple * GUIDs. * @protocol: protocol for which the event is registered * @handles: linked list of all handles on which the notified protocol was * installed */ struct efi_register_notify_event { struct list_head link; struct efi_event *event; efi_guid_t protocol; struct list_head handles; }; /* called at pre-initialization */ int efi_init_early(void); /* Initialize efi execution environment */ efi_status_t efi_init_obj_list(void); /* Append new boot option in BootOrder variable */ efi_status_t efi_bootmgr_append_bootorder(u16 index); /* Get unused "Boot####" index */ efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, u32 *index); /* Generate the media device boot option */ efi_status_t efi_bootmgr_update_media_device_boot_option(void); /* Delete selected boot option */ efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index); /* Invoke EFI boot manager */ efi_status_t efi_bootmgr_run(void *fdt); /* search the boot option index in BootOrder */ bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index); /* Set up console modes */ void efi_setup_console_size(void); /* Set up load options from environment variable */ efi_status_t efi_env_set_load_options(efi_handle_t handle, const char *env_var, u16 **load_options); /* Install device tree */ efi_status_t efi_install_fdt(void *fdt); /* Run loaded UEFI image */ efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size); /* Run loaded UEFI image with given fdt */ efi_status_t efi_binary_run(void *image, size_t size, void *fdt); /* Initialize variable services */ efi_status_t efi_init_variables(void); /* Notify ExitBootServices() is called */ void efi_variables_boot_exit_notify(void); efi_status_t efi_tcg2_notify_exit_boot_services_failed(void); /* Measure efi application invocation */ efi_status_t efi_tcg2_measure_efi_app_invocation(struct efi_loaded_image_obj *handle); /* Measure efi application exit */ efi_status_t efi_tcg2_measure_efi_app_exit(void); /* Measure DTB */ efi_status_t efi_tcg2_measure_dtb(void *dtb); /* Called by bootefi to initialize root node */ efi_status_t efi_root_node_register(void); /* Called by bootefi to initialize runtime */ efi_status_t efi_initialize_system_table(void); /* efi_runtime_detach() - detach unimplemented runtime functions */ void efi_runtime_detach(void); /* efi_convert_pointer() - convert pointer to virtual address */ efi_status_t EFIAPI efi_convert_pointer(efi_uintn_t debug_disposition, void **address); /* Carve out DT reserved memory ranges */ void efi_carve_out_dt_rsv(void *fdt); /* Purge unused kaslr-seed */ void efi_try_purge_kaslr_seed(void *fdt); /* Called by bootefi to make console interface available */ efi_status_t efi_console_register(void); /* Called by efi_init_obj_list() to proble all block devices */ efi_status_t efi_disks_register(void); /* Called by efi_init_obj_list() to install EFI_RNG_PROTOCOL */ efi_status_t efi_rng_register(void); /* Called by efi_init_obj_list() to install EFI_TCG2_PROTOCOL */ efi_status_t efi_tcg2_register(void); /* Called by efi_init_obj_list() to install RISCV_EFI_BOOT_PROTOCOL */ efi_status_t efi_riscv_register(void); /* Called by efi_init_obj_list() to do initial measurement */ efi_status_t efi_tcg2_do_initial_measurement(void); /* measure the pe-coff image, extend PCR and add Event Log */ efi_status_t tcg2_measure_pe_image(void *efi, u64 efi_size, struct efi_loaded_image_obj *handle, struct efi_loaded_image *loaded_image_info); /* Create handles and protocols for the partitions of a block device */ int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc, const char *uclass_idname, int diskid, const char *pdevname); /* Called by bootefi to make GOP (graphical) interface available */ efi_status_t efi_gop_register(void); /* Called by bootefi to make the network interface available */ efi_status_t efi_net_register(void); /* Called by bootefi to make the watchdog available */ efi_status_t efi_watchdog_register(void); efi_status_t efi_initrd_register(void); efi_status_t efi_initrd_deregister(void); /* Called by bootefi to make SMBIOS tables available */ /** * efi_acpi_register() - write out ACPI tables * * Called by bootefi to make ACPI tables available * * Return: 0 if OK, -ENOMEM if no memory is available for the tables */ efi_status_t efi_acpi_register(void); /** * efi_smbios_register() - write out SMBIOS tables * * Called by bootefi to make SMBIOS tables available * * Return: 0 if OK, -ENOMEM if no memory is available for the tables */ efi_status_t efi_smbios_register(void); struct efi_simple_file_system_protocol * efi_fs_from_path(struct efi_device_path *fp); /* Called by efi_set_watchdog_timer to reset the timer */ efi_status_t efi_set_watchdog(unsigned long timeout); /* Called from places to check whether a timer expired */ void efi_timer_check(void); /* Check if a buffer contains a PE-COFF image */ efi_status_t efi_check_pe(void *buffer, size_t size, void **nt_header); /* PE loader implementation */ efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi, size_t efi_size, struct efi_loaded_image *loaded_image_info); /* Called once to store the pristine gd pointer */ void efi_save_gd(void); /* Call this to relocate the runtime section to an address space */ void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map); /* Call this to get image parameters */ void efi_get_image_parameters(void **img_addr, size_t *img_size); /* Add a new object to the object list. */ void efi_add_handle(efi_handle_t obj); /* Create handle */ efi_status_t efi_create_handle(efi_handle_t *handle); /* Delete handle */ efi_status_t efi_delete_handle(efi_handle_t obj); /* Call this to validate a handle and find the EFI object for it */ struct efi_object *efi_search_obj(const efi_handle_t handle); /* Locate device_path handle */ efi_status_t EFIAPI efi_locate_device_path(const efi_guid_t *protocol, struct efi_device_path **device_path, efi_handle_t *device); /* Load image */ efi_status_t EFIAPI efi_load_image(bool boot_policy, efi_handle_t parent_image, struct efi_device_path *file_path, void *source_buffer, efi_uintn_t source_size, efi_handle_t *image_handle); /* Start image */ efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, efi_uintn_t *exit_data_size, u16 **exit_data); /* Unload image */ efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle); /* Find a protocol on a handle */ efi_status_t efi_search_protocol(const efi_handle_t handle, const efi_guid_t *protocol_guid, struct efi_handler **handler); /* Install new protocol on a handle */ efi_status_t efi_add_protocol(const efi_handle_t handle, const efi_guid_t *protocol, void *protocol_interface); /* Open protocol */ efi_status_t efi_protocol_open(struct efi_handler *handler, void **protocol_interface, void *agent_handle, void *controller_handle, uint32_t attributes); /* Install multiple protocol interfaces */ efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(efi_handle_t *handle, ...); efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(efi_handle_t handle, ...); /* Get handles that support a given protocol */ efi_status_t EFIAPI efi_locate_handle_buffer( enum efi_locate_search_type search_type, const efi_guid_t *protocol, void *search_key, efi_uintn_t *no_handles, efi_handle_t **buffer); /* Close a previously opened protocol interface */ efi_status_t efi_close_protocol(efi_handle_t handle, const efi_guid_t *protocol, efi_handle_t agent_handle, efi_handle_t controller_handle); /* Open a protocol interface */ efi_status_t EFIAPI efi_handle_protocol(efi_handle_t handle, const efi_guid_t *protocol, void **protocol_interface); /* Call this to create an event */ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, void (EFIAPI *notify_function) ( struct efi_event *event, void *context), void *notify_context, const efi_guid_t *group, struct efi_event **event); /* Call this to set a timer */ efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, uint64_t trigger_time); /* Call this to signal an event */ void efi_signal_event(struct efi_event *event); /* return true if the device is removable */ bool efi_disk_is_removable(efi_handle_t handle); /** * efi_create_simple_file_system() - create simple file system protocol * * Create a simple file system protocol for a partition. * * @desc: block device descriptor * @part: partition number * @dp: device path * @fsp: simple file system protocol * Return: status code */ efi_status_t efi_create_simple_file_system(struct blk_desc *desc, int part, struct efi_device_path *dp, struct efi_simple_file_system_protocol **fsp); /* open file from device-path: */ struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp); /* Registers a callback function for a notification event. */ efi_status_t EFIAPI efi_register_protocol_notify(const efi_guid_t *protocol, struct efi_event *event, void **registration); efi_status_t efi_file_size(struct efi_file_handle *fh, efi_uintn_t *size); /* get a device path from a Boot#### option */ struct efi_device_path *efi_get_dp_from_boot(const efi_guid_t guid); /* get len, string (used in u-boot crypto from a guid */ const char *guid_to_sha_str(const efi_guid_t *guid); int algo_to_len(const char *algo); int efi_link_dev(efi_handle_t handle, struct udevice *dev); int efi_unlink_dev(efi_handle_t handle); bool efi_varname_is_load_option(u16 *var_name16, int *index); efi_status_t efi_next_variable_name(efi_uintn_t *size, u16 **buf, efi_guid_t *guid); /** * efi_size_in_pages() - convert size in bytes to size in pages * * This macro returns the number of EFI memory pages required to hold 'size' * bytes. * * @size: size in bytes * Return: size in pages */ #define efi_size_in_pages(size) (((size) + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT) /* Allocate boot service data pool memory */ void *efi_alloc(size_t len); /* Allocate pages on the specified alignment */ void *efi_alloc_aligned_pages(u64 len, int memory_type, size_t align); /* More specific EFI memory allocator, called by EFI payloads */ efi_status_t efi_allocate_pages(enum efi_allocate_type type, enum efi_memory_type memory_type, efi_uintn_t pages, uint64_t *memory); /* EFI memory free function. */ efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages); /* EFI memory allocator for small allocations */ efi_status_t efi_allocate_pool(enum efi_memory_type pool_type, efi_uintn_t size, void **buffer); /* EFI pool memory free function. */ efi_status_t efi_free_pool(void *buffer); /* Allocate and retrieve EFI memory map */ efi_status_t efi_get_memory_map_alloc(efi_uintn_t *map_size, struct efi_mem_desc **memory_map); /* Returns the EFI memory map */ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, struct efi_mem_desc *memory_map, efi_uintn_t *map_key, efi_uintn_t *descriptor_size, uint32_t *descriptor_version); /* Adds a range into the EFI memory map */ efi_status_t efi_add_memory_map(u64 start, u64 size, int memory_type); /* Adds a conventional range into the EFI memory map */ efi_status_t efi_add_conventional_memory_map(u64 ram_start, u64 ram_end, u64 ram_top); /* Called by board init to initialize the EFI drivers */ efi_status_t efi_driver_init(void); /* Called when a block device is added */ int efi_disk_probe(void *ctx, struct event *event); /* Called when a block device is removed */ int efi_disk_remove(void *ctx, struct event *event); /* Called by board init to initialize the EFI memory map */ int efi_memory_init(void); /* Adds new or overrides configuration table entry to the system table */ efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table); /* Sets up a loaded image */ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path, struct efi_device_path *file_path, struct efi_loaded_image_obj **handle_ptr, struct efi_loaded_image **info_ptr); #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER extern void *efi_bounce_buffer; #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024) #endif /* shorten device path */ struct efi_device_path *efi_dp_shorten(struct efi_device_path *dp); struct efi_device_path *efi_dp_next(const struct efi_device_path *dp); int efi_dp_match(const struct efi_device_path *a, const struct efi_device_path *b); efi_handle_t efi_dp_find_obj(struct efi_device_path *dp, const efi_guid_t *guid, struct efi_device_path **rem); /* get size of the first device path instance excluding end node */ efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp); /* size of multi-instance device path excluding end node */ efi_uintn_t efi_dp_size(const struct efi_device_path *dp); struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp); struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp, const struct efi_device_path *node); /* Create a device path node of given type, sub-type, length */ struct efi_device_path *efi_dp_create_device_node(const u8 type, const u8 sub_type, const u16 length); /* Append device path instance */ struct efi_device_path *efi_dp_append_instance( const struct efi_device_path *dp, const struct efi_device_path *dpi); /* Get next device path instance */ struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp, efi_uintn_t *size); /* Check if a device path contains muliple instances */ bool efi_dp_is_multi_instance(const struct efi_device_path *dp); struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part); /* Create a device node for a block device partition. */ struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part); struct efi_device_path *efi_dp_from_file(const struct efi_device_path *dp, const char *path); struct efi_device_path *efi_dp_from_eth(void); struct efi_device_path *efi_dp_from_mem(uint32_t mem_type, uint64_t start_address, uint64_t end_address); /* Determine the last device path node that is not the end node. */ const struct efi_device_path *efi_dp_last_node( const struct efi_device_path *dp); efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path, struct efi_device_path **device_path, struct efi_device_path **file_path); struct efi_device_path *efi_dp_from_uart(void); efi_status_t efi_dp_from_name(const char *dev, const char *devnr, const char *path, struct efi_device_path **device, struct efi_device_path **file); ssize_t efi_dp_check_length(const struct efi_device_path *dp, const size_t maxlen); #define EFI_DP_TYPE(_dp, _type, _subtype) \ (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \ ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype)) /* template END node: */ extern const struct efi_device_path END; /* Indicate supported runtime services */ efi_status_t efi_init_runtime_supported(void); /* Update CRC32 in table header */ void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table); /* Boards may provide the functions below to implement RTS functionality */ void __efi_runtime EFIAPI efi_reset_system( enum efi_reset_type reset_type, efi_status_t reset_status, unsigned long data_size, void *reset_data); /* Architecture specific initialization of the EFI subsystem */ efi_status_t efi_reset_system_init(void); efi_status_t __efi_runtime EFIAPI efi_get_time( struct efi_time *time, struct efi_time_cap *capabilities); efi_status_t __efi_runtime EFIAPI efi_set_time(struct efi_time *time); /* * Entry point for the tests of the EFI API. * It is called by 'bootefi selftest' */ efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle, struct efi_system_table *systab); efi_status_t EFIAPI efi_get_variable(u16 *variable_name, const efi_guid_t *vendor, u32 *attributes, efi_uintn_t *data_size, void *data); efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size, u16 *variable_name, efi_guid_t *vendor); efi_status_t EFIAPI efi_set_variable(u16 *variable_name, const efi_guid_t *vendor, u32 attributes, efi_uintn_t data_size, const void *data); efi_status_t EFIAPI efi_query_variable_info( u32 attributes, u64 *maximum_variable_storage_size, u64 *remaining_variable_storage_size, u64 *maximum_variable_size); void *efi_get_var(const u16 *name, const efi_guid_t *vendor, efi_uintn_t *size); /* * See section 3.1.3 in the v2.7 UEFI spec for more details on * the layout of EFI_LOAD_OPTION. In short it is: * * typedef struct _EFI_LOAD_OPTION { * UINT32 Attributes; * UINT16 FilePathListLength; * // CHAR16 Description[]; <-- variable length, NULL terminated * // EFI_DEVICE_PATH_PROTOCOL FilePathList[]; * <-- FilePathListLength bytes * // UINT8 OptionalData[]; * } EFI_LOAD_OPTION; */ struct efi_load_option { u32 attributes; u16 file_path_length; u16 *label; struct efi_device_path *file_path; const u8 *optional_data; }; struct efi_device_path *efi_dp_from_lo(struct efi_load_option *lo, const efi_guid_t *guid); struct efi_device_path *efi_dp_concat(const struct efi_device_path *dp1, const struct efi_device_path *dp2, bool split_end_node); struct efi_device_path *search_gpt_dp_node(struct efi_device_path *device_path); efi_status_t efi_deserialize_load_option(struct efi_load_option *lo, u8 *data, efi_uintn_t *size); unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data); efi_status_t efi_set_load_options(efi_handle_t handle, efi_uintn_t load_options_size, void *load_options); efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options); /** * struct efi_image_regions - A list of memory regions * * @max: Maximum number of regions * @num: Number of regions * @reg: array of regions */ struct efi_image_regions { int max; int num; struct image_region reg[]; }; /** * struct efi_sig_data - A decoded data of struct efi_signature_data * * This structure represents an internal form of signature in * signature database. A listed list may represent a signature list. * * @next: Pointer to next entry * @owner: Signature owner * @data: Pointer to signature data * @size: Size of signature data */ struct efi_sig_data { struct efi_sig_data *next; efi_guid_t owner; void *data; size_t size; }; /** * struct efi_signature_store - A decoded data of signature database * * This structure represents an internal form of signature database. * * @next: Pointer to next entry * @sig_type: Signature type * @sig_data_list: Pointer to signature list */ struct efi_signature_store { struct efi_signature_store *next; efi_guid_t sig_type; struct efi_sig_data *sig_data_list; }; struct x509_certificate; struct pkcs7_message; /** * struct eficonfig_media_boot_option - boot option for (removable) media device * * This structure is used to enumerate possible boot option * * @lo: Serialized load option data * @size: Size of serialized load option data * @exist: Flag to indicate the load option already exists * in Non-volatile load option */ struct eficonfig_media_boot_option { void *lo; efi_uintn_t size; bool exist; }; bool efi_hash_regions(struct image_region *regs, int count, void **hash, const char *hash_algo, int *len); bool efi_signature_lookup_digest(struct efi_image_regions *regs, struct efi_signature_store *db, bool dbx); bool efi_signature_verify(struct efi_image_regions *regs, struct pkcs7_message *msg, struct efi_signature_store *db, struct efi_signature_store *dbx); static inline bool efi_signature_verify_one(struct efi_image_regions *regs, struct pkcs7_message *msg, struct efi_signature_store *db) { return efi_signature_verify(regs, msg, db, NULL); } bool efi_signature_check_signers(struct pkcs7_message *msg, struct efi_signature_store *dbx); efi_status_t efi_image_region_add(struct efi_image_regions *regs, const void *start, const void *end, int nocheck); void efi_sigstore_free(struct efi_signature_store *sigstore); struct efi_signature_store *efi_build_signature_store(void *sig_list, efi_uintn_t size); struct efi_signature_store *efi_sigstore_parse_sigdb(u16 *name); bool efi_secure_boot_enabled(void); bool efi_capsule_auth_enabled(void); void *efi_prepare_aligned_image(void *efi, u64 *efi_size); bool efi_image_parse(void *efi, size_t len, struct efi_image_regions **regp, WIN_CERTIFICATE **auth, size_t *auth_len); struct pkcs7_message *efi_parse_pkcs7_header(const void *buf, size_t buflen, u8 **tmpbuf); /* runtime implementation of memcpy() */ void efi_memcpy_runtime(void *dest, const void *src, size_t n); /* commonly used helper functions */ u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char *name, unsigned int index); efi_string_t efi_convert_string(const char *str); extern const struct efi_firmware_management_protocol efi_fmp_fit; extern const struct efi_firmware_management_protocol efi_fmp_raw; /* Capsule update */ efi_status_t EFIAPI efi_update_capsule( struct efi_capsule_header **capsule_header_array, efi_uintn_t capsule_count, u64 scatter_gather_list); efi_status_t EFIAPI efi_query_capsule_caps( struct efi_capsule_header **capsule_header_array, efi_uintn_t capsule_count, u64 *maximum_capsule_size, u32 *reset_type); efi_status_t efi_capsule_authenticate(const void *capsule, efi_uintn_t capsule_size, void **image, efi_uintn_t *image_size); #define EFI_CAPSULE_DIR u"\\EFI\\UpdateCapsule\\" /** * struct efi_fw_image - Information on firmware images updatable through * capsule update * * This structure gives information about the firmware images on the platform * which can be updated through the capsule update mechanism * * @image_type_id: Image GUID. Same value is to be used in the capsule * @fw_name: Name of the firmware image * @image_index: Image Index, same as value passed to SetImage FMP * function */ struct efi_fw_image { efi_guid_t image_type_id; u16 *fw_name; u8 image_index; }; /** * struct efi_capsule_update_info - Information needed for capsule updates * * This structure provides information needed for performing firmware * updates. The structure needs to be initialised per platform, for all * platforms which enable capsule updates * * @dfu_string: String used to populate dfu_alt_info * @num_images: The number of images array entries * @images: Pointer to an array of updatable images */ struct efi_capsule_update_info { const char *dfu_string; int num_images; struct efi_fw_image *images; }; extern struct efi_capsule_update_info update_info; /** * Install the ESRT system table. * * Return: status code */ efi_status_t efi_esrt_register(void); /** * efi_ecpt_register() - Install the ECPT system table. * * Return: status code */ efi_status_t efi_ecpt_register(void); /** * efi_esrt_populate() - Populates the ESRT entries from the FMP instances * present in the system. * If an ESRT already exists, the old ESRT is replaced in the system table. * The memory of the old ESRT is deallocated. * * Return: * - EFI_SUCCESS if the ESRT is correctly created * - error code otherwise. */ efi_status_t efi_esrt_populate(void); efi_status_t efi_load_capsule_drivers(void); efi_status_t platform_get_eventlog(struct udevice *dev, u64 *addr, u32 *sz); efi_status_t efi_locate_handle_buffer_int(enum efi_locate_search_type search_type, const efi_guid_t *protocol, void *search_key, efi_uintn_t *no_handles, efi_handle_t **buffer); efi_status_t efi_open_volume_int(struct efi_simple_file_system_protocol *this, struct efi_file_handle **root); efi_status_t efi_file_open_int(struct efi_file_handle *this, struct efi_file_handle **new_handle, u16 *file_name, u64 open_mode, u64 attributes); efi_status_t efi_file_close_int(struct efi_file_handle *file); efi_status_t efi_file_read_int(struct efi_file_handle *this, efi_uintn_t *buffer_size, void *buffer); efi_status_t efi_file_setpos_int(struct efi_file_handle *file, u64 pos); typedef efi_status_t (*efi_console_filter_func)(struct efi_input_key *key); efi_status_t efi_console_get_u16_string (struct efi_simple_text_input_protocol *cin, u16 *buf, efi_uintn_t count, efi_console_filter_func filer_func, int row, int col); efi_status_t efi_disk_get_device_name(const efi_handle_t handle, char *buf, int size); /** * efi_add_known_memory() - add memory banks to EFI memory map * * This weak function may be overridden for specific architectures. */ void efi_add_known_memory(void); #endif /* _EFI_LOADER_H */