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u-boot/include/efi_api.h
Simon Glass 867a6ac86d efi: Add start-up library code 
When running as an EFI application, U-Boot must request memory from EFI,
and provide access to the boot services U-Boot needs.

Add library code to perform these tasks. This includes efi_main() which is
the entry point from EFI. U-Boot is built as a shared library.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05 08:42:41 -06:00

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/*
* Extensible Firmware Interface
* Based on 'Extensible Firmware Interface Specification' version 0.9,
* April 30, 1999
*
* Copyright (C) 1999 VA Linux Systems
* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
* Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
* David Mosberger-Tang <davidm@hpl.hp.com>
* Stephane Eranian <eranian@hpl.hp.com>
*
* From include/linux/efi.h in kernel 4.1 with some additions/subtractions
*/
#ifndef _EFI_API_H
#define _EFI_API_H
#include <efi.h>
/* EFI Boot Services table */
struct efi_boot_services {
struct efi_table_hdr hdr;
void *raise_tpl;
void *restore_tpl;
efi_status_t (EFIAPI *allocate_pages)(int, int, unsigned long,
efi_physical_addr_t *);
efi_status_t (EFIAPI *free_pages)(efi_physical_addr_t, unsigned long);
efi_status_t (EFIAPI *get_memory_map)(unsigned long *memory_map_size,
struct efi_mem_desc *desc, unsigned long *key,
unsigned long *desc_size, u32 *desc_version);
efi_status_t (EFIAPI *allocate_pool)(int, unsigned long, void **);
efi_status_t (EFIAPI *free_pool)(void *);
void *create_event;
void *set_timer;
efi_status_t(EFIAPI *wait_for_event)(unsigned long number_of_events,
void *event, unsigned long *index);
void *signal_event;
void *close_event;
void *check_event;
void *install_protocol_interface;
void *reinstall_protocol_interface;
void *uninstall_protocol_interface;
efi_status_t (EFIAPI *handle_protocol)(efi_handle_t, efi_guid_t *,
void **);
void *reserved;
void *register_protocol_notify;
efi_status_t (EFIAPI *locate_handle)(
enum efi_locate_search_type search_type,
efi_guid_t *protocol, void *search_key,
unsigned long *buffer_size, efi_handle_t *buffer);
efi_status_t (EFIAPI *locate_device_path)(efi_guid_t *protocol,
struct efi_device_path **device_path,
efi_handle_t *device);
void *install_configuration_table;
efi_status_t (EFIAPI *load_image)(bool boot_policiy,
efi_handle_t parent_image,
struct efi_device_path *file_path, void *source_buffer,
unsigned long source_size, efi_handle_t *image);
efi_status_t (EFIAPI *start_image)(efi_handle_t handle,
unsigned long *exitdata_size,
s16 **exitdata);
efi_status_t (EFIAPI *exit)(efi_handle_t handle,
efi_status_t exit_status,
unsigned long exitdata_size, s16 *exitdata);
void *unload_image;
efi_status_t (EFIAPI *exit_boot_services)(efi_handle_t, unsigned long);
efi_status_t (EFIAPI *get_next_monotonic_count)(u64 *count);
efi_status_t (EFIAPI *stall)(unsigned long usecs);
void *set_watchdog_timer;
efi_status_t(EFIAPI *connect_controller)(efi_handle_t controller_handle,
efi_handle_t *driver_image_handle,
struct efi_device_path *remaining_device_path,
bool recursive);
void *disconnect_controller;
#define EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 0x00000001
#define EFI_OPEN_PROTOCOL_GET_PROTOCOL 0x00000002
#define EFI_OPEN_PROTOCOL_TEST_PROTOCOL 0x00000004
#define EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER 0x00000008
#define EFI_OPEN_PROTOCOL_BY_DRIVER 0x00000010
#define EFI_OPEN_PROTOCOL_EXCLUSIVE 0x00000020
efi_status_t (EFIAPI *open_protocol)(efi_handle_t handle,
efi_guid_t *protocol, void **interface,
efi_handle_t agent_handle,
efi_handle_t controller_handle, u32 attributes);
void *close_protocol;
efi_status_t(EFIAPI *open_protocol_information)(efi_handle_t handle,
efi_guid_t *protocol,
struct efi_open_protocol_info_entry **entry_buffer,
unsigned long *entry_count);
efi_status_t (EFIAPI *protocols_per_handle)(efi_handle_t handle,
efi_guid_t ***protocol_buffer,
unsigned long *protocols_buffer_count);
efi_status_t (EFIAPI *locate_handle_buffer) (
enum efi_locate_search_type search_type,
efi_guid_t *protocol, void *search_key,
unsigned long *no_handles, efi_handle_t **buffer);
void *locate_protocol;
void *install_multiple_protocol_interfaces;
void *uninstall_multiple_protocol_interfaces;
void *calculate_crc32;
void *copy_mem;
void *set_mem;
void *create_event_ex;
};
/* Types and defines for EFI ResetSystem */
enum efi_reset_type {
EFI_RESET_COLD = 0,
EFI_RESET_WARM = 1,
EFI_RESET_SHUTDOWN = 2
};
/* EFI Runtime Services table */
#define EFI_RUNTIME_SERVICES_SIGNATURE 0x5652453544e5552ULL
#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
struct efi_runtime_services {
struct efi_table_hdr hdr;
void *get_time;
void *set_time;
void *get_wakeup_time;
void *set_wakeup_time;
void *set_virtual_address_map;
void *convert_pointer;
efi_status_t (EFIAPI *get_variable)(s16 *variable_name,
efi_guid_t *vendor, u32 *attributes,
unsigned long *data_size, void *data);
efi_status_t (EFIAPI *get_next_variable)(
unsigned long *variable_name_size,
s16 *variable_name, efi_guid_t *vendor);
efi_status_t (EFIAPI *set_variable)(s16 *variable_name,
efi_guid_t *vendor, u32 attributes,
unsigned long data_size, void *data);
void *get_next_high_mono_count;
void (EFIAPI *reset_system)(enum efi_reset_type reset_type,
efi_status_t reset_status,
unsigned long data_size, void *reset_data);
void *update_capsule;
void *query_capsule_caps;
void *query_variable_info;
};
/* EFI Configuration Table and GUID definitions */
#define NULL_GUID \
EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
#define LOADED_IMAGE_PROTOCOL_GUID \
EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, \
0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
struct efi_system_table {
struct efi_table_hdr hdr;
unsigned long fw_vendor; /* physical addr of wchar_t vendor string */
u32 fw_revision;
unsigned long con_in_handle;
struct efi_simple_input_interface *con_in;
unsigned long con_out_handle;
struct efi_simple_text_output_protocol *con_out;
unsigned long stderr_handle;
unsigned long std_err;
struct efi_runtime_services *runtime;
struct efi_boot_services *boottime;
unsigned long nr_tables;
unsigned long tables;
};
struct efi_loaded_image {
u32 revision;
void *parent_handle;
struct efi_system_table *system_table;
void *device_handle;
void *file_path;
void *reserved;
u32 load_options_size;
void *load_options;
void *image_base;
aligned_u64 image_size;
unsigned int image_code_type;
unsigned int image_data_type;
unsigned long unload;
};
struct efi_device_path {
u8 type;
u8 sub_type;
u16 length;
};
struct simple_text_output_mode {
s32 max_mode;
s32 mode;
s32 attribute;
s32 cursor_column;
s32 cursor_row;
bool cursor_visible;
};
struct efi_simple_text_output_protocol {
void *reset;
efi_status_t (EFIAPI *output_string)(
struct efi_simple_text_output_protocol *this,
const unsigned short *str);
void *test_string;
efi_status_t(EFIAPI *query_mode)(
struct efi_simple_text_output_protocol *this,
unsigned long mode_number, unsigned long *columns,
unsigned long *rows);
efi_status_t(EFIAPI *set_mode)(
struct efi_simple_text_output_protocol *this,
unsigned long mode_number);
efi_status_t(EFIAPI *set_attribute)(
struct efi_simple_text_output_protocol *this,
unsigned long attribute);
efi_status_t(EFIAPI *clear_screen) (
struct efi_simple_text_output_protocol *this);
efi_status_t(EFIAPI *set_cursor_position) (
struct efi_simple_text_output_protocol *this,
unsigned long column, unsigned long row);
efi_status_t(EFIAPI *enable_cursor)(void *, bool enable);
struct simple_text_output_mode *mode;
};
struct efi_input_key {
u16 scan_code;
s16 unicode_char;
};
struct efi_simple_input_interface {
efi_status_t(EFIAPI *reset)(struct efi_simple_input_interface *this,
bool ExtendedVerification);
efi_status_t(EFIAPI *read_key_stroke)(
struct efi_simple_input_interface *this,
struct efi_input_key *key);
void *wait_for_key;
};
#endif
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