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trezor-firmware/core/embed/trezorhal/monoctr.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/>.
*/
#ifndef TREZORHAL_MONOCTR
#define TREZORHAL_MONOCTR
#ifdef KERNEL_MODE
// Monoctr module provides monotonic counter functionality
#define MONOCTR_MAX_VALUE 63
#include <stdint.h>
#include "secbool.h"
typedef enum {
MONOCTR_BOOTLOADER_VERSION = 0,
MONOCTR_FIRMWARE_VERSION = 1,
} monoctr_type_t;
// Write a new value to the monotonic counter
// Returns sectrue on success, when value is lower than the current value
// the write fails and returns secfalse
secbool monoctr_write(monoctr_type_t type, uint8_t value);
// Read the current value of the monotonic counter
secbool monoctr_read(monoctr_type_t type, uint8_t* value);
#endif // KERNEL_MODE
#endif