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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#ifndef H_BOOTUTIL_PRIV_
#define H_BOOTUTIL_PRIV_

#include "bootutil/image.h"

#define BOOT_EFLASH     1
#define BOOT_EFILE      2
#define BOOT_EBADIMAGE  3
#define BOOT_EBADVECT   4
#define BOOT_EBADSTATUS 5
#define BOOT_ENOMEM     6

#define BOOT_TMPBUF_SZ  256

struct boot_image_location {
    uint8_t bil_flash_id;
    uint32_t bil_address;
};

/*
 * Maintain state of copy progress.
 */
struct boot_status {
    uint32_t idx;       /* Which area we're operating on */
    uint8_t elem_sz;    /* Size of the status element to write in bytes */
    uint8_t state;      /* Which part of the swapping process are we at */
};

/*
 * End-of-image slot data structure.
 */
#define BOOT_IMG_MAGIC  0x12344321
struct boot_img_trailer {
    uint32_t bit_copy_start;
    uint8_t  bit_copy_done;
    uint8_t  bit_img_ok;
    uint16_t _pad;
};

int bootutil_verify_sig(uint8_t *hash, uint32_t hlen, uint8_t *sig, int slen,
    uint8_t key_id);

int boot_read_image_header(struct boot_image_location *loc,
  struct image_header *out_hdr);
int boot_write_status(struct boot_status *bs);
int boot_read_status(struct boot_status *bs);
void boot_clear_status(void);

void boot_magic_loc(int slot_num, uint8_t *flash_id, uint32_t *off);
void boot_scratch_loc(uint8_t *flash_id, uint32_t *off);
void boot_slot_magic(int slot_num, struct boot_img_trailer *bit);
void boot_scratch_magic(struct boot_img_trailer *bit);

#endif