app/aboot/mdtp_fs.h

/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.

 * 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 The Linux Foundation 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 "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * 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,
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 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef MDTP_FS_H
#define MDTP_FS_H

#define MAX_IMAGES					(40)
#define MDTP_HEADER_LEN 			(4096)
#define META_DATA_PARTITION_LEN		(2048)
#define MAX_PARAMS 					(512)
/*
MDTP header layout:
-The mdtp_img header is a fixed length of 4096 Bytes.
-The mdtp_img header is devided into 2 partitions:
	1.MDTP parameters (eFuse, digit-space, etc..)
	2.Images meta-data (offset, width, height)
-Each partition size is 2048 Bytes.
-Each parameter is 4 Bytes long, 512 params MAX.
-Each meta-data part (offset/width/height) is 4 Bytes long.
*/


/* Standalone parameters */
typedef struct mdtp_image_params {
	uint32_t offset;
	uint32_t width;
	uint32_t height;
} mdtp_image_params_t;

/* Image parameters */
typedef struct mdtp_meta_data {
	uint32_t params[MAX_PARAMS];
	mdtp_image_params_t image_params[MAX_IMAGES];
} mdtp_meta_data_t;

/*To make sure the header len is exactly MDTP_HEADER */
typedef union mdtp_image {
	mdtp_meta_data_t meta_data;
	uint8_t header[MDTP_HEADER_LEN];
} mdtp_image_t;


typedef enum{ACCEPTEDIT_TEXT = 0, ALERT_MESSAGE = 1, BTN_OK_OFF = 2,
	BTN_OK_ON = 3, MAINTEXT_5SECONDS = 4, MAINTEXT_ENTERPIN = 5,
	MAINTEXT_INCORRECTPIN = 6, PINTEXT = 7,
	PIN_SELECTED_0 = 8, PIN_SELECTED_1 = 9, PIN_SELECTED_2 = 10, PIN_SELECTED_3 = 11,
	PIN_SELECTED_4 = 12, PIN_SELECTED_5 = 13, PIN_SELECTED_6 = 14,
	PIN_SELECTED_7  = 15, PIN_SELECTED_8 = 16, PIN_SELECTED_9 = 17,
	PIN_UNSELECTED_0 = 18, PIN_UNSELECTED_1 = 19, PIN_UNSELECTED_2 = 20,
	PIN_UNSELECTED_3 = 21, PIN_UNSELECTED_4 = 22, PIN_UNSELECTED_5 = 23,
	PIN_UNSELECTED_6 = 24, PIN_UNSELECTED_7 = 25,
	PIN_UNSELECTED_8 = 26, PIN_UNSELECTED_9 = 27} mdtp_image_id_t;

typedef enum {VIRTUAL_FUSE = 0, DIGIT_SPACE = 1} mdtp_parameter_id_t ;

/*---------------------------------------------------------
 * External Functions
 *-------------------------------------------------------*/

/**
 * Returns an image offset
 */
uint32_t get_image_offset(mdtp_image_id_t img);

/**
 * Returns an image width
 */
uint32_t get_image_width(mdtp_image_id_t img);

/**
 * Returns an image height
 */
uint32_t get_image_height(mdtp_image_id_t img);

/**
 * returns a parameter value
 */
uint32_t mdtp_fs_get_param(mdtp_parameter_id_t  param);

/**
 * Loads MDTP image meta data from EMMC
 */
int mdtp_fs_init();

#endif /* MDTP_FS_H */