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60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <esp_types.h>
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#include <esp_err.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Type of eFuse blocks for ESP32
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*/
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typedef enum {
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EFUSE_BLK0 = 0, /**< Number of eFuse block. Reserved. */
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EFUSE_BLK1 = 1, /**< Number of eFuse block. Used for Flash Encryption. If not using that Flash Encryption feature, they can be used for another purpose. */
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EFUSE_BLK_KEY0 = 1, /**< Number of eFuse block. Used for Flash Encryption. If not using that Flash Encryption feature, they can be used for another purpose. */
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EFUSE_BLK_ENCRYPT_FLASH = 1, /**< Number of eFuse block. Used for Flash Encryption. If not using that Flash Encryption feature, they can be used for another purpose. */
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EFUSE_BLK2 = 2, /**< Number of eFuse block. Used for Secure Boot. If not using that Secure Boot feature, they can be used for another purpose. */
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EFUSE_BLK_KEY1 = 2, /**< Number of eFuse block. Used for Secure Boot. If not using that Secure Boot feature, they can be used for another purpose. */
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EFUSE_BLK_SECURE_BOOT = 2, /**< Number of eFuse block. Used for Secure Boot. If not using that Secure Boot feature, they can be used for another purpose. */
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EFUSE_BLK3 = 3, /**< Number of eFuse block. Uses for the purpose of the user. */
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EFUSE_BLK_KEY2 = 3, /**< Number of eFuse block. Uses for the purpose of the user. */
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EFUSE_BLK_KEY_MAX = 4,
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EFUSE_BLK_MAX = 4,
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} esp_efuse_block_t;
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/**
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* @brief Type of coding scheme
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*/
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typedef enum {
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EFUSE_CODING_SCHEME_NONE = 0, /**< None */
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EFUSE_CODING_SCHEME_3_4 = 1, /**< 3/4 coding */
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EFUSE_CODING_SCHEME_REPEAT = 2, /**< Repeat coding */
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} esp_efuse_coding_scheme_t;
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/**
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* @brief Type of key purpose (virtual because ESP32 has only fixed purposes for blocks)
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*/
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typedef enum {
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ESP_EFUSE_KEY_PURPOSE_USER = 0, /**< BLOCK3 */
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ESP_EFUSE_KEY_PURPOSE_SYSTEM = 1, /**< BLOCK0 */
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ESP_EFUSE_KEY_PURPOSE_FLASH_ENCRYPTION = 2, /**< BLOCK1 */
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ESP_EFUSE_KEY_PURPOSE_SECURE_BOOT_V2 = 3, /**< BLOCK2 */
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ESP_EFUSE_KEY_PURPOSE_MAX, /**< MAX PURPOSE*/
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} esp_efuse_purpose_t;
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#ifdef __cplusplus
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}
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#endif
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