/*
 * UEFI PEI wrapper
 *
 * Copyright (C) 2014 Google Inc.
 * Copyright (C) 2015-2016 Intel Corporation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Google Inc. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _PEI_WRAPPER_H_
#define _PEI_WRAPPER_H_

#include <types.h>

#define PEI_VERSION 22

#define ABI_X86 __attribute__((regparm(0)))

typedef void ABI_X86(*tx_byte_func)(unsigned char byte);

struct pei_data {
	uint32_t pei_version;

	int boot_mode;

	/* Data read from flash and passed into MRC */
	const void *saved_data;
	int saved_data_size;

	/* Disable use of saved data (can be set by mainboard) */
	int disable_saved_data;

	/* Data from MRC that should be saved to flash */
	void *data_to_save;
	int data_to_save_size;
} __packed;

typedef struct pei_data PEI_DATA;

#endif /* _PEI_WRAPPER_H_ */