diff options
Diffstat (limited to 'include/efi_loader.h')
| -rw-r--r-- | include/efi_loader.h | 1306 |
1 files changed, 1306 insertions, 0 deletions
diff --git a/include/efi_loader.h b/include/efi_loader.h new file mode 100644 index 00000000000..3e70ac07055 --- /dev/null +++ b/include/efi_loader.h @@ -0,0 +1,1306 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * EFI application loader + * + * Copyright (c) 2016 Alexander Graf + */ + +#ifndef _EFI_LOADER_H +#define _EFI_LOADER_H 1 + +#include <blk.h> +#include <efi_device_path.h> +#include <event.h> +#include <efi_api.h> +#include <image.h> +#include <setjmp.h> +#include <linux/list.h> +#include <linux/sizes.h> + +struct blk_desc; +struct bootflow; + +#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); + +/* 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_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) */ + +#if CONFIG_IS_ENABLED(EFI_BINARY_EXEC) +/* 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); +#else +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) { } +#endif + +#if CONFIG_IS_ENABLED(NETDEVICES) && CONFIG_IS_ENABLED(EFI_LOADER) +/* Call this to update the current device path of the efi net device */ +efi_status_t efi_net_new_dp(const char *dev, const char *server, struct udevice *udev); +/* Call this to get the current device path of the efi net device */ +void efi_net_dp_from_dev(struct efi_device_path **dp, struct udevice *udev, bool cache_only); +void efi_net_get_addr(struct efi_ipv4_address *ip, + struct efi_ipv4_address *mask, + struct efi_ipv4_address *gw, + struct udevice *dev); +void efi_net_set_addr(struct efi_ipv4_address *ip, + struct efi_ipv4_address *mask, + struct efi_ipv4_address *gw, + struct udevice *dev); +#if IS_ENABLED(CONFIG_EFI_HTTP_PROTOCOL) +efi_status_t efi_net_do_request(u8 *url, enum efi_http_method method, void **buffer, + u32 *status_code, ulong *file_size, char *headers_buffer, + struct efi_service_binding_protocol *parent); +#endif +#define MAX_HTTP_HEADERS_SIZE SZ_64K +#define MAX_HTTP_HEADERS 100 +#define MAX_HTTP_HEADER_NAME 128 +#define MAX_HTTP_HEADER_VALUE 512 +struct http_header { + uchar name[MAX_HTTP_HEADER_NAME]; + uchar value[MAX_HTTP_HEADER_VALUE]; +}; + +void efi_net_parse_headers(ulong *num_headers, struct http_header *headers); +#else +static inline void efi_net_dp_from_dev(struct efi_device_path **dp, + struct udevice *udev, bool cache_only) { } +static inline void efi_net_get_addr(struct efi_ipv4_address *ip, + struct efi_ipv4_address *mask, + struct efi_ipv4_address *gw, + struct udevice *dev) { } +static inline void efi_net_set_addr(struct efi_ipv4_address *ip, + struct efi_ipv4_address *mask, + struct efi_ipv4_address *gw, + struct udevice *dev) { } +#endif + +/* 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) +#define U_BOOT_EFI_RT_VAR_FILE_GUID \ + EFI_GUID(0xb2ac5fc9, 0x92b7, 0x4acd, \ + 0xae, 0xac, 0x11, 0xe8, 0x18, 0xc3, 0x13, 0x0c) + +/* 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; \ +}) + +/** + * define EFI_RETURN() - return from EFI_CALL in efi_start_image() + * + * @ret: status code + */ +#define EFI_RETURN(ret) ({ \ + typeof(ret) _r = ret; \ + assert(__efi_entry_check()); \ + debug("%sEFI: %lu returned by started image", __efi_nesting_dec(), \ + (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK)); \ +}) + +/* + * 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; +/* structure for EFI_DEBUG_SUPPORT_PROTOCOL */ +extern struct efi_debug_image_info_table_header efi_m_debug_info_table_header; + +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; +/* GUID of the EFI_SIMPLE_NETWORK_PROTOCOL */ +extern const efi_guid_t efi_net_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; +extern const efi_guid_t smbios3_guid; +/*GUID of console */ +extern const efi_guid_t efi_guid_text_input_protocol; +extern const efi_guid_t efi_guid_text_output_protocol; + +/** + * 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; + jmp_buf *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); + +/** + * efi_setup_console_size() - update the mode table. + * + * By default the only mode available is 80x25. If the console has at least 50 + * lines, enable mode 80x50. If we can query the console size and it is neither + * 80x25 nor 80x50, set it as an additional mode. + */ +void efi_setup_console_size(void); + +/** + * efi_console_set_ansi() - Set whether ANSI escape-characters should be emitted + * + * These characters mess up tests which use ut_assert_nextline(). Call this + * function to tell efi_loader not to emit these characters when starting up the + * terminal + * + * @allow_ansi: Allow emitting ANSI escape-characters + */ +void efi_console_set_ansi(bool allow_ansi); + +/* 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); +/* Get EFI configuration table */ +void *efi_get_configuration_table(const efi_guid_t *guid); +/* Install device tree */ +efi_status_t efi_install_fdt(void *fdt); +/* Install initrd */ +efi_status_t efi_install_initrd(void *initrd, size_t initd_sz); +/* Execute loaded UEFI image */ +efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options); +/* Run loaded UEFI image with given fdt */ +efi_status_t efi_binary_run(void *image, size_t size, void *fdt, void *initrd, size_t initrd_sz); + +/** + * efi_bootflow_run() - Run a bootflow containing an EFI application + * + * @bootflow: Bootflow to run + * Return: Status code, something went wrong + */ +efi_status_t efi_bootflow_run(struct bootflow *bootflow); + +/* 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); +/* Called by bootefi to initialize debug */ +efi_status_t efi_initialize_system_table_pointer(void); +/* Called by efi_load_image for register debug info */ +efi_status_t efi_core_new_debug_image_info_entry(u32 image_info_type, + struct efi_loaded_image *loaded_image, + efi_handle_t image_handle); +void efi_core_remove_debug_image_info_entry(efi_handle_t image_handle); +/* 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_rng_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(struct udevice *dev); +efi_status_t efi_net_do_start(struct udevice *dev); +/* Called by efi_net_register to make the ip4 config2 protocol available */ +efi_status_t efi_ipconfig_register(const efi_handle_t handle, + struct efi_ip4_config2_protocol *ip4config); +/* Called by efi_net_register to make the http protocol available */ +efi_status_t efi_http_register(const efi_handle_t handle, + struct efi_service_binding_protocol *http_service_binding); +/* Called by bootefi to make the watchdog available */ +efi_status_t efi_watchdog_register(void); +efi_status_t efi_initrd_register(struct efi_device_path *dp_initrd); +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); +/* Load image from path */ +efi_status_t efi_load_image_from_path(bool boot_policy, + struct efi_device_path *file_path, + void **buffer, efi_uintn_t *size); +/* 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); +/* Uninstall new protocol on a handle */ +efi_status_t efi_uninstall_protocol + (efi_handle_t handle, const efi_guid_t *protocol, + void *protocol_interface, bool preserve); +/* Reinstall a protocol on a handle */ +efi_status_t EFIAPI efi_reinstall_protocol_interface( + efi_handle_t handle, + const efi_guid_t *protocol, + void *old_interface, void *new_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, ...); +/* Connect and disconnect controller */ +efi_status_t EFIAPI efi_connect_controller(efi_handle_t controller_handle, + efi_handle_t *driver_image_handle, + struct efi_device_path *remain_device_path, + bool recursive); +efi_status_t EFIAPI efi_disconnect_controller( + efi_handle_t controller_handle, + efi_handle_t driver_image_handle, + efi_handle_t child_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 close an event */ +efi_status_t EFIAPI efi_close_event(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); +/** + * efi_realloc() - reallocate boot services data pool memory + * + * Reallocate memory from pool for a new size and copy the data from old one. + * + * @ptr: pointer to the buffer + * @size: number of bytes to allocate + * Return: EFI status to indicate success or not + */ +efi_status_t efi_realloc(void **ptr, 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); + +/** + * efi_update_memory_map() - update the memory map by adding/removing pages + * + * @start: start address, must be a multiple of + * EFI_PAGE_SIZE + * @pages: number of pages to add + * @memory_type: type of memory added + * @overlap_conventional: region may only overlap free(conventional) + * memory + * @remove: remove memory map + * Return: status code + */ +efi_status_t efi_update_memory_map(u64 start, u64 pages, int memory_type, + bool overlap_conventional, bool remove); + +/* 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 + +#define EFI_DP_TYPE(_dp, _type, _subtype) \ + (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \ + ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype)) + +/* 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, + size_t 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 types to the EFI memory map + * + * This function is to be used to add different memory types other + * than EFI_CONVENTIONAL_MEMORY to the EFI memory map. The conventional + * memory is handled by the LMB module and gets added to the memory + * map through the LMB module. + * + * This function may be overridden for architectures specific purposes. + */ +void efi_add_known_memory(void); + +/** + * efi_map_update_notify() - notify EFI of memory map changes + * + * @addr: start of memory area + * @size: size of memory area + * @op: type of change + * Return: 0 if change could be processed + */ +#ifdef CONFIG_EFI_LOADER +int efi_map_update_notify(phys_addr_t addr, phys_size_t size, + enum lmb_map_op op); +#else +#define efi_map_update_notify(addr, size, op) (0) +#endif + +/** + * efi_load_option_dp_join() - join device-paths for load option + * + * @dp: in: binary device-path, out: joined device-path + * @dp_size: size of joined device-path + * @initrd_dp: initrd device-path or NULL + * @fdt_dp: device-tree device-path or NULL + * Return: status_code + */ +efi_status_t efi_load_option_dp_join(struct efi_device_path **dp, + size_t *dp_size, + struct efi_device_path *initrd_dp, + struct efi_device_path *fdt_dp); + +int efi_get_distro_fdt_name(char *fname, int size, int seq); + +void efi_load_distro_fdt(efi_handle_t handle, void **fdt, efi_uintn_t *fdt_size); + +#endif /* _EFI_LOADER_H */ |