384f788d18
Adds a common E-Fuse driver to be used by Espressif Xtensa devices. Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/****************************************************************************
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* arch/xtensa/src/common/espressif/esp_efuse.h
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_XTENSA_SRC_COMMON_ESPRESSIF_ESP_EFUSE_H
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#define __ARCH_XTENSA_SRC_COMMON_ESPRESSIF_ESP_EFUSE_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/efuse/efuse.h>
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ESP_EFUSE_BLK_LEN 256
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* E-Fuse block and bit definitions can be found on the Technical Reference
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* Manual or on the ESP-IDF documentation.
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*/
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#ifdef CONFIG_ARCH_CHIP_ESP32
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typedef enum
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{
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ESP_EFUSE_BLK0 = 0,
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ESP_EFUSE_BLK1 = 1,
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ESP_EFUSE_BLK_KEY0 = 1,
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ESP_EFUSE_BLK_ENCRYPT_FLASH = 1,
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ESP_EFUSE_BLK2 = 2,
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ESP_EFUSE_BLK_KEY1 = 2,
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ESP_EFUSE_BLK_SECURE_BOOT = 2,
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ESP_EFUSE_BLK3 = 3,
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ESP_EFUSE_BLK_KEY2 = 3,
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ESP_EFUSE_BLK_KEY_MAX = 4,
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ESP_EFUSE_BLK_MAX = 4,
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} esp_efuse_blk_num_t;
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#else
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typedef enum
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{
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ESP_EFUSE_BLK0 = 0,
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ESP_EFUSE_BLK1 = 1,
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ESP_EFUSE_BLK2 = 2,
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ESP_EFUSE_BLK_SYS_DATA_PART1 = 2,
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ESP_EFUSE_BLK3 = 3,
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ESP_EFUSE_BLK_USER_DATA = 3,
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ESP_EFUSE_BLK4 = 4,
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ESP_EFUSE_BLK_KEY0 = 4,
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ESP_EFUSE_BLK5 = 5,
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ESP_EFUSE_BLK_KEY1 = 5,
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ESP_EFUSE_BLK6 = 6,
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ESP_EFUSE_BLK_KEY2 = 6,
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ESP_EFUSE_BLK7 = 7,
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ESP_EFUSE_BLK_KEY3 = 7,
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ESP_EFUSE_BLK8 = 8,
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ESP_EFUSE_BLK_KEY4 = 8,
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ESP_EFUSE_BLK9 = 9,
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ESP_EFUSE_BLK_KEY5 = 9,
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ESP_EFUSE_BLK_KEY_MAX = 10,
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ESP_EFUSE_BLK10 = 10,
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ESP_EFUSE_BLK_SYS_DATA_PART2 = 10,
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ESP_EFUSE_BLK_MAX
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} esp_efuse_blk_num_t;
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#endif
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/****************************************************************************
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* Public Functions Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: esp_efuse_initialize
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*
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* Description:
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* Initialize the efuse driver. The efuse is initialized
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* and registered as 'devpath'
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*
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* Input Parameters:
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* devpath - The full path to the efuse device.
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* This should be of the form /dev/efuse
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int esp_efuse_initialize(const char *devpath);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_XTENSA_SRC_COMMON_ESPRESSIF_ESP_EFUSE_H */
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