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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017-2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_STM32_MBOOT_PACK_H
#define MICROPY_INCLUDED_STM32_MBOOT_PACK_H
#include <stdint.h>
#include "py/mphal.h"
#if MBOOT_ENABLE_PACKING
#include "lib/libhydrogen/hydrogen.h"
// Encrypted & signed bootloader support
/******************************************************************************/
// Interface
#define MBOOT_PACK_HEADER_VERSION (1)
// Used by libhydrogen for signing and secretbox context.
#define MBOOT_PACK_HYDRO_CONTEXT "mbootenc"
// Maximum size of the firmware payload.
#define MBOOT_PACK_DFU_CHUNK_BUF_SIZE (MBOOT_PACK_CHUNKSIZE + hydro_secretbox_HEADERBYTES)
enum mboot_pack_chunk_format {
MBOOT_PACK_CHUNK_META = 0,
MBOOT_PACK_CHUNK_FULL_SIG = 1,
MBOOT_PACK_CHUNK_FW_RAW = 2,
MBOOT_PACK_CHUNK_FW_GZIP = 3,
};
// Each DFU chunk transferred has this header to validate it.
typedef struct _mboot_pack_chunk_buf_t {
struct {
uint8_t header_vers;
uint8_t format; // enum mboot_pack_chunk_format
uint8_t _pad[2];
uint32_t address;
uint32_t length; // number of bytes in following "data" payload, excluding "signature"
} header;
uint8_t data[MBOOT_PACK_DFU_CHUNK_BUF_SIZE];
uint8_t signature[hydro_sign_BYTES];
} mboot_pack_chunk_buf_t;
// Signing and encryption keys, stored in mboot flash, provided externally.
extern const uint8_t mboot_pack_sign_public_key[hydro_sign_PUBLICKEYBYTES];
extern const uint8_t mboot_pack_secretbox_key[hydro_secretbox_KEYBYTES];
/******************************************************************************/
// Implementation
void mboot_pack_init(void);
int mboot_pack_write(uint32_t addr, const uint8_t *src8, size_t len, bool dry_run);
#endif // MBOOT_ENABLE_PACKING
#endif // MICROPY_INCLUDED_STM32_MBOOT_PACK_H
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