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trezor-firmware/core/embed/bootloader/version_check.h

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/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
#include "secbool.h"
// Protection against bootloader downgrade
// Ensures bootloader version is stored in monotonic counter
// If the version cannot be written, the function will shutdown the device
void ensure_bootloader_min_version(void);
// Protection against firmware downgrade
// This functions checks if the firmware version is at least the minimum
// required version, returns sectrue if check_version is higher or equal to the
// stored version
secbool check_firmware_min_version(uint8_t check_version);
// Ensures firmware version is stored in monotonic counter
// If the version cannot be written, the function will shutdown the device
void ensure_firmware_min_version(uint8_t version);