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>

1 files changed, 244 insertions, 0 deletions

diff --git a/include/efi_api.h b/include/efi_api.h
new file mode 100644
index 0000000000..4fd17d6b68
--- /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 <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