From 867a6ac86dd823de409752e9ca5dc8f4d4880f26 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 31 Jul 2015 09:31:36 -0600 Subject: 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 Reviewed-by: Bin Meng --- include/efi_api.h | 244 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 244 insertions(+) create mode 100644 include/efi_api.h (limited to 'include/efi_api.h') diff --git a/include/efi_api.h b/include/efi_api.h new file mode 100644 index 0000000..4fd17d6 --- /dev/null +++ b/include/efi_api.h @@ -0,0 +1,244 @@ +/* + * 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 + * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. + * David Mosberger-Tang + * Stephane Eranian + * + * From include/linux/efi.h in kernel 4.1 with some additions/subtractions + */ + +#ifndef _EFI_API_H +#define _EFI_API_H + +#include + +/* 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 -- cgit v1.1