include/efi_selftest.h

/*
 *  EFI application loader
 *
 *  Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
 *
 *  SPDX-License-Identifier:     GPL-2.0+
 */

#ifndef _EFI_SELFTEST_H
#define _EFI_SELFTEST_H

#include <common.h>
#include <efi.h>
#include <efi_api.h>
#include <efi_loader.h>
#include <linker_lists.h>

#define EFI_ST_SUCCESS 0
#define EFI_ST_FAILURE 1

/*
 * Prints an error message.
 *
 * @...	format string followed by fields to print
 */
#define efi_st_error(...) \
	(efi_st_printf("%s(%u):\nERROR: ", __FILE__, __LINE__), \
	efi_st_printf(__VA_ARGS__)) \

/*
 * A test may be setup and executed at boottime,
 * it may be setup at boottime and executed at runtime,
 * or it may be setup and executed at runtime.
 */
enum efi_test_phase {
	EFI_EXECUTE_BEFORE_BOOTTIME_EXIT = 1,
	EFI_SETUP_BEFORE_BOOTTIME_EXIT,
	EFI_SETUP_AFTER_BOOTTIME_EXIT,
};

extern struct efi_simple_text_output_protocol *con_out;
extern struct efi_simple_input_interface *con_in;

/*
 * Exit the boot services.
 *
 * The size of the memory map is determined.
 * Pool memory is allocated to copy the memory map.
 * The memory amp is copied and the map key is obtained.
 * The map key is used to exit the boot services.
 */
void efi_st_exit_boot_services(void);

/*
 * Print a pointer to an u16 string
 *
 * @pointer: pointer
 * @buf: pointer to buffer address
 * on return position of terminating zero word
 */
void efi_st_printf(const char *fmt, ...)
		 __attribute__ ((format (__printf__, 1, 2)));

/*
 * Compare memory.
 * We cannot use lib/string.c due to different CFLAGS values.
 *
 * @buf1:	first buffer
 * @buf2:	second buffer
 * @length:	number of bytes to compare
 * @return:	0 if both buffers contain the same bytes
 */
int efi_st_memcmp(const void *buf1, const void *buf2, size_t length);

/*
 * Compare an u16 string to a char string.
 *
 * @buf1:	u16 string
 * @buf2:	char string
 * @return:	0 if both buffers contain the same bytes
 */
int efi_st_strcmp_16_8(const u16 *buf1, const char *buf2);

/*
 * Reads an Unicode character from the input device.
 *
 * @return: Unicode character
 */
u16 efi_st_get_key(void);

/**
 * struct efi_unit_test - EFI unit test
 *
 * An efi_unit_test provides a interface to an EFI unit test.
 *
 * @name:	name of unit test
 * @phase:	specifies when setup and execute are executed
 * @setup:	set up the unit test
 * @teardown:	tear down the unit test
 * @execute:	execute the unit test
 * @on_request:	test is only executed on request
 */
struct efi_unit_test {
	const char *name;
	const enum efi_test_phase phase;
	int (*setup)(const efi_handle_t handle,
		     const struct efi_system_table *systable);
	int (*execute)(void);
	int (*teardown)(void);
	bool on_request;
};

/* Declare a new EFI unit test */
#define EFI_UNIT_TEST(__name)						\
	ll_entry_declare(struct efi_unit_test, __name, efi_unit_test)

#endif /* _EFI_SELFTEST_H */