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https://github.com/brain-hackers/u-boot-brain
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![Alexander Graf](/assets/img/avatar_default.png)
Some times you may want to exit an EFI payload again, for example to default boot into a PXE installation and decide that you would rather want to boot from the local disk instead. This patch adds exit functionality to the EFI implementation, allowing EFI payloads to exit. Signed-off-by: Alexander Graf <agraf@suse.de>
545 lines
17 KiB
C
545 lines
17 KiB
C
/*
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* Extensible Firmware Interface
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* Based on 'Extensible Firmware Interface Specification' version 0.9,
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* April 30, 1999
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*
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* Copyright (C) 1999 VA Linux Systems
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* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
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* Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Stephane Eranian <eranian@hpl.hp.com>
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*
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* From include/linux/efi.h in kernel 4.1 with some additions/subtractions
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*/
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#ifndef _EFI_API_H
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#define _EFI_API_H
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#include <efi.h>
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#ifdef CONFIG_EFI_LOADER
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#include <asm/setjmp.h>
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#endif
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/* Types and defines for EFI CreateEvent */
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enum efi_event_type {
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EFI_TIMER_STOP = 0,
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EFI_TIMER_PERIODIC = 1,
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EFI_TIMER_RELATIVE = 2
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};
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/* EFI Boot Services table */
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struct efi_boot_services {
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struct efi_table_hdr hdr;
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efi_status_t (EFIAPI *raise_tpl)(unsigned long new_tpl);
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void (EFIAPI *restore_tpl)(unsigned long old_tpl);
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efi_status_t (EFIAPI *allocate_pages)(int, int, unsigned long,
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efi_physical_addr_t *);
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efi_status_t (EFIAPI *free_pages)(efi_physical_addr_t, unsigned long);
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efi_status_t (EFIAPI *get_memory_map)(unsigned long *memory_map_size,
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struct efi_mem_desc *desc, unsigned long *key,
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unsigned long *desc_size, u32 *desc_version);
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efi_status_t (EFIAPI *allocate_pool)(int, unsigned long, void **);
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efi_status_t (EFIAPI *free_pool)(void *);
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efi_status_t (EFIAPI *create_event)(enum efi_event_type type,
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unsigned long notify_tpl,
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void (EFIAPI *notify_function) (void *event,
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void *context),
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void *notify_context, void **event);
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efi_status_t (EFIAPI *set_timer)(void *event, int type,
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uint64_t trigger_time);
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efi_status_t (EFIAPI *wait_for_event)(unsigned long number_of_events,
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void *event, unsigned long *index);
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efi_status_t (EFIAPI *signal_event)(void *event);
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efi_status_t (EFIAPI *close_event)(void *event);
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efi_status_t (EFIAPI *check_event)(void *event);
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efi_status_t (EFIAPI *install_protocol_interface)(
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void **handle, efi_guid_t *protocol,
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int protocol_interface_type, void *protocol_interface);
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efi_status_t (EFIAPI *reinstall_protocol_interface)(
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void *handle, efi_guid_t *protocol,
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void *old_interface, void *new_interface);
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efi_status_t (EFIAPI *uninstall_protocol_interface)(void *handle,
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efi_guid_t *protocol, void *protocol_interface);
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efi_status_t (EFIAPI *handle_protocol)(efi_handle_t, efi_guid_t *,
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void **);
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void *reserved;
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efi_status_t (EFIAPI *register_protocol_notify)(
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efi_guid_t *protocol, void *event,
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void **registration);
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efi_status_t (EFIAPI *locate_handle)(
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enum efi_locate_search_type search_type,
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efi_guid_t *protocol, void *search_key,
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unsigned long *buffer_size, efi_handle_t *buffer);
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efi_status_t (EFIAPI *locate_device_path)(efi_guid_t *protocol,
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struct efi_device_path **device_path,
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efi_handle_t *device);
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efi_status_t (EFIAPI *install_configuration_table)(
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efi_guid_t *guid, void *table);
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efi_status_t (EFIAPI *load_image)(bool boot_policiy,
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efi_handle_t parent_image,
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struct efi_device_path *file_path, void *source_buffer,
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unsigned long source_size, efi_handle_t *image);
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efi_status_t (EFIAPI *start_image)(efi_handle_t handle,
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unsigned long *exitdata_size,
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s16 **exitdata);
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efi_status_t (EFIAPI *exit)(efi_handle_t handle,
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efi_status_t exit_status,
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unsigned long exitdata_size, s16 *exitdata);
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efi_status_t (EFIAPI *unload_image)(void *image_handle);
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efi_status_t (EFIAPI *exit_boot_services)(efi_handle_t, unsigned long);
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efi_status_t (EFIAPI *get_next_monotonic_count)(u64 *count);
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efi_status_t (EFIAPI *stall)(unsigned long usecs);
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efi_status_t (EFIAPI *set_watchdog_timer)(unsigned long timeout,
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uint64_t watchdog_code, unsigned long data_size,
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uint16_t *watchdog_data);
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efi_status_t(EFIAPI *connect_controller)(efi_handle_t controller_handle,
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efi_handle_t *driver_image_handle,
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struct efi_device_path *remaining_device_path,
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bool recursive);
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efi_status_t (EFIAPI *disconnect_controller)(void *controller_handle,
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void *driver_image_handle, void *child_handle);
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#define EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 0x00000001
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#define EFI_OPEN_PROTOCOL_GET_PROTOCOL 0x00000002
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#define EFI_OPEN_PROTOCOL_TEST_PROTOCOL 0x00000004
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#define EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER 0x00000008
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#define EFI_OPEN_PROTOCOL_BY_DRIVER 0x00000010
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#define EFI_OPEN_PROTOCOL_EXCLUSIVE 0x00000020
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efi_status_t (EFIAPI *open_protocol)(efi_handle_t handle,
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efi_guid_t *protocol, void **interface,
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efi_handle_t agent_handle,
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efi_handle_t controller_handle, u32 attributes);
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efi_status_t (EFIAPI *close_protocol)(void *handle,
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efi_guid_t *protocol, void *agent_handle,
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void *controller_handle);
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efi_status_t(EFIAPI *open_protocol_information)(efi_handle_t handle,
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efi_guid_t *protocol,
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struct efi_open_protocol_info_entry **entry_buffer,
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unsigned long *entry_count);
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efi_status_t (EFIAPI *protocols_per_handle)(efi_handle_t handle,
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efi_guid_t ***protocol_buffer,
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unsigned long *protocols_buffer_count);
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efi_status_t (EFIAPI *locate_handle_buffer) (
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enum efi_locate_search_type search_type,
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efi_guid_t *protocol, void *search_key,
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unsigned long *no_handles, efi_handle_t **buffer);
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efi_status_t (EFIAPI *locate_protocol)(efi_guid_t *protocol,
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void *registration, void **protocol_interface);
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efi_status_t (EFIAPI *install_multiple_protocol_interfaces)(
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void **handle, ...);
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efi_status_t (EFIAPI *uninstall_multiple_protocol_interfaces)(
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void *handle, ...);
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efi_status_t (EFIAPI *calculate_crc32)(void *data,
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unsigned long data_size, uint32_t *crc32);
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void (EFIAPI *copy_mem)(void *destination, void *source,
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unsigned long length);
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void (EFIAPI *set_mem)(void *buffer, unsigned long size,
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uint8_t value);
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void *create_event_ex;
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};
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/* Types and defines for EFI ResetSystem */
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enum efi_reset_type {
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EFI_RESET_COLD = 0,
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EFI_RESET_WARM = 1,
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EFI_RESET_SHUTDOWN = 2
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};
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/* EFI Runtime Services table */
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#define EFI_RUNTIME_SERVICES_SIGNATURE 0x5652453544e5552ULL
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#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
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struct efi_runtime_services {
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struct efi_table_hdr hdr;
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efi_status_t (EFIAPI *get_time)(struct efi_time *time,
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struct efi_time_cap *capabilities);
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efi_status_t (EFIAPI *set_time)(struct efi_time *time);
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efi_status_t (EFIAPI *get_wakeup_time)(char *enabled, char *pending,
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struct efi_time *time);
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efi_status_t (EFIAPI *set_wakeup_time)(char enabled,
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struct efi_time *time);
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efi_status_t (EFIAPI *set_virtual_address_map)(
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unsigned long memory_map_size,
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unsigned long descriptor_size,
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uint32_t descriptor_version,
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struct efi_mem_desc *virtmap);
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efi_status_t (*convert_pointer)(unsigned long dbg, void **address);
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efi_status_t (EFIAPI *get_variable)(s16 *variable_name,
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efi_guid_t *vendor, u32 *attributes,
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unsigned long *data_size, void *data);
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efi_status_t (EFIAPI *get_next_variable)(
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unsigned long *variable_name_size,
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s16 *variable_name, efi_guid_t *vendor);
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efi_status_t (EFIAPI *set_variable)(s16 *variable_name,
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efi_guid_t *vendor, u32 attributes,
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unsigned long data_size, void *data);
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efi_status_t (EFIAPI *get_next_high_mono_count)(
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uint32_t *high_count);
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void (EFIAPI *reset_system)(enum efi_reset_type reset_type,
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efi_status_t reset_status,
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unsigned long data_size, void *reset_data);
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void *update_capsule;
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void *query_capsule_caps;
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void *query_variable_info;
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};
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/* EFI Configuration Table and GUID definitions */
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#define NULL_GUID \
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EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
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#define LOADED_IMAGE_PROTOCOL_GUID \
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EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, \
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0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
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#define EFI_FDT_GUID \
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EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
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0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
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struct efi_configuration_table
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{
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efi_guid_t guid;
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void *table;
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};
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#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
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struct efi_system_table {
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struct efi_table_hdr hdr;
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unsigned long fw_vendor; /* physical addr of wchar_t vendor string */
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u32 fw_revision;
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unsigned long con_in_handle;
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struct efi_simple_input_interface *con_in;
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unsigned long con_out_handle;
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struct efi_simple_text_output_protocol *con_out;
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unsigned long stderr_handle;
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struct efi_simple_text_output_protocol *std_err;
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struct efi_runtime_services *runtime;
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struct efi_boot_services *boottime;
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unsigned long nr_tables;
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struct efi_configuration_table *tables;
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};
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#define LOADED_IMAGE_GUID \
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EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
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0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
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struct efi_loaded_image {
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u32 revision;
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void *parent_handle;
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struct efi_system_table *system_table;
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void *device_handle;
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void *file_path;
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void *reserved;
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u32 load_options_size;
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void *load_options;
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void *image_base;
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aligned_u64 image_size;
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unsigned int image_code_type;
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unsigned int image_data_type;
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unsigned long unload;
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/* Below are efi loader private fields */
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#ifdef CONFIG_EFI_LOADER
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efi_status_t exit_status;
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struct jmp_buf_data exit_jmp;
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#endif
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};
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#define DEVICE_PATH_GUID \
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EFI_GUID(0x09576e91, 0x6d3f, 0x11d2, \
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0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
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#define DEVICE_PATH_TYPE_END 0x7f
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# define DEVICE_PATH_SUB_TYPE_END 0xff
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struct efi_device_path {
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u8 type;
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u8 sub_type;
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u16 length;
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};
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#define DEVICE_PATH_TYPE_MEDIA_DEVICE 0x04
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# define DEVICE_PATH_SUB_TYPE_FILE_PATH 0x04
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struct efi_device_path_file_path {
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struct efi_device_path dp;
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u16 str[32];
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};
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#define BLOCK_IO_GUID \
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EFI_GUID(0x964e5b21, 0x6459, 0x11d2, \
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0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
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struct efi_block_io_media
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{
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u32 media_id;
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char removable_media;
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char media_present;
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char logical_partition;
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char read_only;
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char write_caching;
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u8 pad[3];
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u32 block_size;
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u32 io_align;
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u8 pad2[4];
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u64 last_block;
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};
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struct efi_block_io {
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u64 revision;
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struct efi_block_io_media *media;
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efi_status_t (EFIAPI *reset)(struct efi_block_io *this,
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char extended_verification);
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efi_status_t (EFIAPI *read_blocks)(struct efi_block_io *this,
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u32 media_id, u64 lba, unsigned long buffer_size,
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void *buffer);
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efi_status_t (EFIAPI *write_blocks)(struct efi_block_io *this,
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u32 media_id, u64 lba, unsigned long buffer_size,
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void *buffer);
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efi_status_t (EFIAPI *flush_blocks)(struct efi_block_io *this);
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};
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struct simple_text_output_mode {
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s32 max_mode;
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s32 mode;
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s32 attribute;
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s32 cursor_column;
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s32 cursor_row;
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bool cursor_visible;
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};
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struct efi_simple_text_output_protocol {
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void *reset;
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efi_status_t (EFIAPI *output_string)(
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struct efi_simple_text_output_protocol *this,
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const unsigned short *str);
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efi_status_t (EFIAPI *test_string)(
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struct efi_simple_text_output_protocol *this,
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const unsigned short *str);
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efi_status_t(EFIAPI *query_mode)(
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struct efi_simple_text_output_protocol *this,
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unsigned long mode_number, unsigned long *columns,
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unsigned long *rows);
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efi_status_t(EFIAPI *set_mode)(
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struct efi_simple_text_output_protocol *this,
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unsigned long mode_number);
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efi_status_t(EFIAPI *set_attribute)(
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struct efi_simple_text_output_protocol *this,
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unsigned long attribute);
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efi_status_t(EFIAPI *clear_screen) (
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struct efi_simple_text_output_protocol *this);
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efi_status_t(EFIAPI *set_cursor_position) (
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struct efi_simple_text_output_protocol *this,
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unsigned long column, unsigned long row);
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efi_status_t(EFIAPI *enable_cursor)(
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struct efi_simple_text_output_protocol *this,
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bool enable);
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struct simple_text_output_mode *mode;
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};
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struct efi_input_key {
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u16 scan_code;
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s16 unicode_char;
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};
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struct efi_simple_input_interface {
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efi_status_t(EFIAPI *reset)(struct efi_simple_input_interface *this,
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bool ExtendedVerification);
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efi_status_t(EFIAPI *read_key_stroke)(
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struct efi_simple_input_interface *this,
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struct efi_input_key *key);
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void *wait_for_key;
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};
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#define CONSOLE_CONTROL_GUID \
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EFI_GUID(0xf42f7782, 0x12e, 0x4c12, \
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0x99, 0x56, 0x49, 0xf9, 0x43, 0x4, 0xf7, 0x21)
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#define EFI_CONSOLE_MODE_TEXT 0
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#define EFI_CONSOLE_MODE_GFX 1
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struct efi_console_control_protocol
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{
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efi_status_t (EFIAPI *get_mode)(
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struct efi_console_control_protocol *this, int *mode,
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char *uga_exists, char *std_in_locked);
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efi_status_t (EFIAPI *set_mode)(
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struct efi_console_control_protocol *this, int mode);
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efi_status_t (EFIAPI *lock_std_in)(
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struct efi_console_control_protocol *this,
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uint16_t *password);
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};
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#define EFI_GOP_GUID \
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EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
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0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
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#define EFI_GOT_RGBA8 0
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#define EFI_GOT_BGRA8 1
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#define EFI_GOT_BITMASK 2
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struct efi_gop_mode_info
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{
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u32 version;
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u32 width;
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u32 height;
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u32 pixel_format;
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u32 pixel_bitmask[4];
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u32 pixels_per_scanline;
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};
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struct efi_gop_mode
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{
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u32 max_mode;
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u32 mode;
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struct efi_gop_mode_info *info;
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unsigned long info_size;
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efi_physical_addr_t fb_base;
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unsigned long fb_size;
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};
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#define EFI_BLT_VIDEO_FILL 0
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#define EFI_BLT_VIDEO_TO_BLT_BUFFER 1
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#define EFI_BLT_BUFFER_TO_VIDEO 2
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#define EFI_BLT_VIDEO_TO_VIDEO 3
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struct efi_gop
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{
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efi_status_t (EFIAPI *query_mode)(struct efi_gop *this, u32 mode_number,
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unsigned long *size_of_info,
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struct efi_gop_mode_info **info);
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efi_status_t (EFIAPI *set_mode)(struct efi_gop *this, u32 mode_number);
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efi_status_t (EFIAPI *blt)(struct efi_gop *this, void *buffer,
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unsigned long operation, unsigned long sx,
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unsigned long sy, unsigned long dx,
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unsigned long dy, unsigned long width,
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unsigned long height, unsigned long delta);
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struct efi_gop_mode *mode;
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};
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#define EFI_SIMPLE_NETWORK_GUID \
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EFI_GUID(0xa19832b9, 0xac25, 0x11d3, \
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0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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struct efi_mac_address {
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char mac_addr[32];
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};
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struct efi_ip_address {
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u8 ip_addr[16];
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};
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enum efi_simple_network_state {
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EFI_NETWORK_STOPPED,
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EFI_NETWORK_STARTED,
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EFI_NETWORK_INITIALIZED,
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};
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struct efi_simple_network_mode {
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enum efi_simple_network_state state;
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u32 hwaddr_size;
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u32 media_header_size;
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u32 max_packet_size;
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u32 nvram_size;
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u32 nvram_access_size;
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u32 receive_filter_mask;
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u32 receive_filter_setting;
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u32 max_mcast_filter_count;
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u32 mcast_filter_count;
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struct efi_mac_address mcast_filter[16];
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struct efi_mac_address current_address;
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struct efi_mac_address broadcast_address;
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struct efi_mac_address permanent_address;
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u8 if_type;
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u8 mac_changeable;
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u8 multitx_supported;
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u8 media_present_supported;
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u8 media_present;
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};
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#define EFI_SIMPLE_NETWORK_RECEIVE_UNICAST 0x01,
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#define EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST 0x02,
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#define EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST 0x04,
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#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS 0x08,
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#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST 0x10,
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struct efi_simple_network
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{
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u64 revision;
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efi_status_t (EFIAPI *start)(struct efi_simple_network *this);
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efi_status_t (EFIAPI *stop)(struct efi_simple_network *this);
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efi_status_t (EFIAPI *initialize)(struct efi_simple_network *this,
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ulong extra_rx, ulong extra_tx);
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efi_status_t (EFIAPI *reset)(struct efi_simple_network *this,
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int extended_verification);
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efi_status_t (EFIAPI *shutdown)(struct efi_simple_network *this);
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efi_status_t (EFIAPI *receive_filters)(struct efi_simple_network *this,
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u32 enable, u32 disable, int reset_mcast_filter,
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ulong mcast_filter_count,
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struct efi_mac_address *mcast_filter);
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efi_status_t (EFIAPI *station_address)(struct efi_simple_network *this,
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int reset, struct efi_mac_address *new_mac);
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efi_status_t (EFIAPI *statistics)(struct efi_simple_network *this,
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int reset, ulong *stat_size, void *stat_table);
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efi_status_t (EFIAPI *mcastiptomac)(struct efi_simple_network *this,
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int ipv6, struct efi_ip_address *ip,
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struct efi_mac_address *mac);
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efi_status_t (EFIAPI *nvdata)(struct efi_simple_network *this,
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int read_write, ulong offset, ulong buffer_size,
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char *buffer);
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efi_status_t (EFIAPI *get_status)(struct efi_simple_network *this,
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u32 *int_status, void **txbuf);
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efi_status_t (EFIAPI *transmit)(struct efi_simple_network *this,
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ulong header_size, ulong buffer_size, void *buffer,
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struct efi_mac_address *src_addr,
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struct efi_mac_address *dest_addr, u16 *protocol);
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efi_status_t (EFIAPI *receive)(struct efi_simple_network *this,
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ulong *header_size, ulong *buffer_size, void *buffer,
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struct efi_mac_address *src_addr,
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struct efi_mac_address *dest_addr, u16 *protocol);
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void (EFIAPI *waitforpacket)(void);
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struct efi_simple_network_mode *mode;
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|
};
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|
|
|
#define EFI_PXE_GUID \
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EFI_GUID(0x03c4e603, 0xac28, 0x11d3, \
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0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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|
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struct efi_pxe_packet {
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u8 packet[1472];
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};
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|
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struct efi_pxe_mode
|
|
{
|
|
u8 unused[52];
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struct efi_pxe_packet dhcp_discover;
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|
struct efi_pxe_packet dhcp_ack;
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|
struct efi_pxe_packet proxy_offer;
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|
struct efi_pxe_packet pxe_discover;
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|
struct efi_pxe_packet pxe_reply;
|
|
};
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|
|
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struct efi_pxe {
|
|
u64 rev;
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|
void (EFIAPI *start)(void);
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|
void (EFIAPI *stop)(void);
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|
void (EFIAPI *dhcp)(void);
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|
void (EFIAPI *discover)(void);
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|
void (EFIAPI *mftp)(void);
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|
void (EFIAPI *udpwrite)(void);
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|
void (EFIAPI *udpread)(void);
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|
void (EFIAPI *setipfilter)(void);
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|
void (EFIAPI *arp)(void);
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|
void (EFIAPI *setparams)(void);
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|
void (EFIAPI *setstationip)(void);
|
|
void (EFIAPI *setpackets)(void);
|
|
struct efi_pxe_mode *mode;
|
|
};
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#endif
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