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u-boot/include/efi_loader.h
Rui Miguel Silva bfef72e4dd cmd: load: add load command for memory mapped 
cp.b is used a lot as a way to load binaries to memory and execute
them, however we may need to integrate this with the efi subsystem to
set it up as a bootdev.

So, introduce a loadm command that will be consistent with the other
loadX commands and will call the efi API's.

ex: loadm $kernel_addr $kernel_addr_r $kernel_size

with this a kernel with CONFIG_EFI_STUB enabled will be loaded and
then subsequently booted with bootefi command.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2022-06-22 11:35:47 -04:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* EFI application loader
*
* Copyright (c) 2016 Alexander Graf
*/
#ifndef _EFI_LOADER_H
#define _EFI_LOADER_H 1
#include <common.h>
#include <blk.h>
#include <log.h>
#include <part_efi.h>
#include <efi_api.h>
#include <image.h>
#include <pe.h>
#include <linux/list.h>
#include <linux/oid_registry.h>
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 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_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 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)
/* 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 if_type if_type;
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
/* 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 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;
/* 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 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
*
* 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;
};
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;
};
/* List of all events registered by RegisterProtocolNotify() */
extern struct list_head efi_register_notify_events;
/* called at pre-initialization */
int efi_init_early(void);
/* Initialize efi execution environment */
efi_status_t efi_init_obj_list(void);
/* Set up console modes */
void efi_setup_console_size(void);
/* 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);
/* 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);
/* 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 initialize efi_disks */
efi_status_t efi_disk_init(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 *if_typename, 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);
void 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 */
void 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);
/* Delete protocol from a handle */
efi_status_t efi_remove_protocol(const efi_handle_t handle,
const efi_guid_t *protocol,
void *protocol_interface);
/* Delete all protocols from a handle */
efi_status_t efi_remove_all_protocols(const efi_handle_t handle);
/* Install multiple protocol interfaces */
efi_status_t EFIAPI efi_install_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 an previously opened protocol interface */
efi_status_t EFIAPI 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, 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);
/* open file system: */
struct efi_simple_file_system_protocol *efi_simple_file_system(
struct blk_desc *desc, int part, struct efi_device_path *dp);
/* 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);
/**
* 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)
/* Generic EFI memory allocator, call this to get memory */
void *efi_alloc(uint64_t len, int memory_type);
/* 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);
/* 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 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(const struct efi_device_path *dp1,
const struct efi_device_path *dp2);
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(struct blk_desc *desc, int part,
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))
/* 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);
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
/*
* 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);
#endif
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);
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;
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 function */
u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char *name,
unsigned int index);
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
* @images: Pointer to an array of updatable images
*/
struct efi_capsule_update_info {
const char *dfu_string;
struct efi_fw_image *images;
};
extern struct efi_capsule_update_info update_info;
extern u8 num_image_type_guids;
/**
* Install the ESRT system table.
*
* Return: status code
*/
efi_status_t efi_esrt_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);
#endif /* _EFI_LOADER_H */
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