243 lines
10 KiB
C
243 lines
10 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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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,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __ESP_PARTITION_H__
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#define __ESP_PARTITION_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "esp_err.h"
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#include "esp_spi_flash.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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ESP_PARTITION_TYPE_APP = 0x00,
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ESP_PARTITION_TYPE_DATA = 0x01,
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ESP_PARTITION_TYPE_FILESYSTEM = 0x02,
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} esp_partition_type_t;
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typedef enum {
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ESP_PARTITION_SUBTYPE_APP_FACTORY = 0x00,
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ESP_PARTITION_SUBTYPE_APP_OTA_MIN = 0x10,
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ESP_PARTITION_SUBTYPE_APP_OTA_0 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 0,
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ESP_PARTITION_SUBTYPE_APP_OTA_1 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 1,
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ESP_PARTITION_SUBTYPE_APP_OTA_2 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 2,
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ESP_PARTITION_SUBTYPE_APP_OTA_3 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 3,
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ESP_PARTITION_SUBTYPE_APP_OTA_4 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 4,
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ESP_PARTITION_SUBTYPE_APP_OTA_5 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 5,
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ESP_PARTITION_SUBTYPE_APP_OTA_6 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 6,
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ESP_PARTITION_SUBTYPE_APP_OTA_7 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 7,
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ESP_PARTITION_SUBTYPE_APP_OTA_8 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 8,
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ESP_PARTITION_SUBTYPE_APP_OTA_9 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 9,
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ESP_PARTITION_SUBTYPE_APP_OTA_10 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 10,
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ESP_PARTITION_SUBTYPE_APP_OTA_11 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 11,
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ESP_PARTITION_SUBTYPE_APP_OTA_12 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 12,
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ESP_PARTITION_SUBTYPE_APP_OTA_13 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 13,
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ESP_PARTITION_SUBTYPE_APP_OTA_14 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 14,
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ESP_PARTITION_SUBTYPE_APP_OTA_15 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 15,
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ESP_PARTITION_SUBTYPE_APP_OTA_MAX = 15,
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ESP_PARTITION_SUBTYPE_APP_TEST = 0x20,
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ESP_PARTITION_SUBTYPE_DATA_OTA = 0x00,
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ESP_PARTITION_SUBTYPE_DATA_RF = 0x01,
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ESP_PARTITION_SUBTYPE_DATA_NVS = 0x02,
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ESP_PARTITION_SUBTYPE_FILESYSTEM_ESPHTTPD = 0x00,
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ESP_PARTITION_SUBTYPE_FILESYSTEM_FAT = 0x01,
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ESP_PARTITION_SUBTYPE_FILESYSTEM_SPIFFS = 0x02,
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ESP_PARTITION_SUBTYPE_ANY = 0xff,
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} esp_partition_subtype_t;
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#define ESP_PARTITION_SUBTYPE_OTA(i) ((esp_partition_subtype_t)(ESP_PARTITION_SUBTYPE_APP_OTA_MIN + ((i) & 0xf)))
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typedef struct esp_partition_iterator_opaque_* esp_partition_iterator_t;
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typedef struct {
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esp_partition_type_t type;
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esp_partition_subtype_t subtype;
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uint32_t address;
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uint32_t size;
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char label[17];
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bool encrypted;
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} esp_partition_t;
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/**
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* @brief Find partition based on one or more parameters
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*
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* @param type Partition type, one of esp_partition_type_t values
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* @param subtype Partition subtype, one of esp_partition_subtype_t values.
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* To find all partitions of given type, use
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* ESP_PARTITION_SUBTYPE_ANY.
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* @param label (optional) Partition label. Set this value if looking
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* for partition with a specific name. Pass NULL otherwise.
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*
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* @return iterator which can be used to enumerate all the partitions found,
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* or NULL if no partitions were found.
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* Iterator obtained through this function has to be released
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* using esp_partition_iterator_release when not used any more.
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*/
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esp_partition_iterator_t esp_partition_find(esp_partition_type_t type, esp_partition_subtype_t subtype, const char* label);
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/**
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* @brief Find first partition based on one or more parameters
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*
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* @param type Partition type, one of esp_partition_type_t values
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* @param subtype Partition subtype, one of esp_partition_subtype_t values.
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* To find all partitions of given type, use
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* ESP_PARTITION_SUBTYPE_ANY.
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* @param label (optional) Partition label. Set this value if looking
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* for partition with a specific name. Pass NULL otherwise.
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*
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* @return pointer to esp_partition_t structure, or NULL if no partition is found.
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* This pointer is valid for the lifetime of the application.
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*/
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const esp_partition_t* esp_partition_find_first(esp_partition_type_t type, esp_partition_subtype_t subtype, const char* label);
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/**
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* @brief Get esp_partition_t structure for given partition
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*
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* @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
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*
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* @return pointer to esp_partition_t structure. This pointer is valid for the lifetime
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* of the application.
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*/
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const esp_partition_t* esp_partition_get(esp_partition_iterator_t iterator);
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/**
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* @brief Move partition iterator to the next partition found
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*
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* Any copies of the iterator will be invalid after this call.
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*
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* @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
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*
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* @return NULL if no partition was found, valid esp_partition_iterator_t otherwise.
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*/
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esp_partition_iterator_t esp_partition_next(esp_partition_iterator_t iterator);
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/**
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* @brief Release partition iterator
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*
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* @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
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*
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*/
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void esp_partition_iterator_release(esp_partition_iterator_t iterator);
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/**
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* @brief Read data from the partition
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*
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* @param partition Pointer to partition structure obtained using
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* esp_partition_find_first or esp_partition_get.
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* Must be non-NULL.
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* @param dst Pointer to the buffer where data should be stored.
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* Pointer must be non-NULL and buffer must be at least 'size' bytes long.
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* @param src_offset Address of the data to be read, relative to the
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* beginning of the partition.
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* @param size Size of data to be read, in bytes.
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*
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* @return ESP_OK, if data was read successfully;
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* ESP_ERR_INVALID_ARG, if src_offset exceeds partition size;
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* ESP_ERR_INVALID_SIZE, if read would go out of bounds of the partition;
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* or one of error codes from lower-level flash driver.
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*/
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esp_err_t esp_partition_read(const esp_partition_t* partition,
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size_t src_offset, void* dst, size_t size);
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/**
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* @brief Write data to the partition
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*
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* Before writing data to flash, corresponding region of flash needs to be erased.
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* This can be done using esp_partition_erase_range function.
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*
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* @param partition Pointer to partition structure obtained using
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* esp_partition_find_first or esp_partition_get.
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* Must be non-NULL.
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* @param dst_offset Address where the data should be written, relative to the
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* beginning of the partition.
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* @param src Pointer to the source buffer. Pointer must be non-NULL and
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* buffer must be at least 'size' bytes long.
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* @param size Size of data to be written, in bytes.
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*
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* @note Prior to writing to flash memory, make sure it has been erased with
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* esp_partition_erase_range call.
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*
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* @return ESP_OK, if data was written successfully;
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* ESP_ERR_INVALID_ARG, if dst_offset exceeds partition size;
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* ESP_ERR_INVALID_SIZE, if write would go out of bounds of the partition;
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* or one of error codes from lower-level flash driver.
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*/
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esp_err_t esp_partition_write(const esp_partition_t* partition,
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size_t dst_offset, const void* src, size_t size);
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/**
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* @brief Erase part of the partition
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*
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* @param partition Pointer to partition structure obtained using
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* esp_partition_find_first or esp_partition_get.
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* Must be non-NULL.
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* @param start_addr Address where erase operation should start. Must be aligned
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* to 4 kilobytes.
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* @param size Size of the range which should be erased, in bytes.
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* Must be divisible by 4 kilobytes.
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*
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* @return ESP_OK, if the range was erased successfully;
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* ESP_ERR_INVALID_ARG, if iterator or dst are NULL;
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* ESP_ERR_INVALID_SIZE, if erase would go out of bounds of the partition;
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* or one of error codes from lower-level flash driver.
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*/
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esp_err_t esp_partition_erase_range(const esp_partition_t* partition,
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uint32_t start_addr, uint32_t size);
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/**
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* @brief Configure MMU to map partition into data memory
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*
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* Unlike spi_flash_mmap function, which requires a 64kB aligned base address,
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* this function doesn't impose such a requirement.
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* If offset results in a flash address which is not aligned to 64kB boundary,
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* address will be rounded to the lower 64kB boundary, so that mapped region
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* includes requested range.
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* Pointer returned via out_ptr argument will be adjusted to point to the
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* requested offset (not necessarily to the beginning of mmap-ed region).
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*
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* To release mapped memory, pass handle returned via out_handle argument to
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* spi_flash_munmap function.
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*
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* @param partition Pointer to partition structure obtained using
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* esp_partition_find_first or esp_partition_get.
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* Must be non-NULL.
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* @param offset Offset from the beginning of partition where mapping should start.
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* @param size Size of the area to be mapped.
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* @param memory Memory space where the region should be mapped
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* @param out_ptr Output, pointer to the mapped memory region
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* @param out_handle Output, handle which should be used for spi_flash_munmap call
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*
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* @return ESP_OK, if successful
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*/
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esp_err_t esp_partition_mmap(const esp_partition_t* partition, uint32_t offset, uint32_t size,
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spi_flash_mmap_memory_t memory,
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const void** out_ptr, spi_flash_mmap_handle_t* out_handle);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ESP_PARTITION_H__ */
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