mirror of
https://github.com/trezor/trezor-firmware.git
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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "version_check.h"
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#include "error_handling.h"
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#include "model_version.h"
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#include "monoctr.h"
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void ensure_bootloader_min_version(void) {
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monoctr_write(MONOCTR_BOOTLOADER_VERSION, BOOTLOADER_MONOTONIC_VERSION);
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uint8_t val = 0;
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ensure(monoctr_read(MONOCTR_BOOTLOADER_VERSION, &val), NULL);
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ensure(sectrue * (val == BOOTLOADER_MONOTONIC_VERSION),
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"Bootloader downgrade protection");
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}
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secbool check_firmware_min_version(uint8_t check_version) {
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uint8_t min_version = 0;
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ensure(monoctr_read(MONOCTR_FIRMWARE_VERSION, &min_version), "monoctr read");
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return (check_version >= min_version) * sectrue;
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}
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void ensure_firmware_min_version(uint8_t version) {
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monoctr_write(MONOCTR_FIRMWARE_VERSION, version);
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uint8_t val = 0;
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ensure(monoctr_read(MONOCTR_FIRMWARE_VERSION, &val), NULL);
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ensure(sectrue * (val == version), "Firmware downgrade protection");
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}
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