// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef __ESP_PARTITION_H__
#define __ESP_PARTITION_H__
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include "esp_err.h"
#include "esp_spi_flash.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file esp_partition.h
* @brief Partition APIs
*/
/**
* @brief Partition type
* @note Keep this enum in sync with PartitionDefinition class gen_esp32part.py
*/
typedef enum {
ESP_PARTITION_TYPE_APP = 0x00, //!< Application partition type
ESP_PARTITION_TYPE_DATA = 0x01, //!< Data partition type
} esp_partition_type_t;
/**
* @brief Partition subtype
* @note Keep this enum in sync with PartitionDefinition class gen_esp32part.py
*/
typedef enum {
ESP_PARTITION_SUBTYPE_APP_FACTORY = 0x00, //!< Factory application partition
ESP_PARTITION_SUBTYPE_APP_OTA_MIN = 0x10, //!< Base for OTA partition subtypes
ESP_PARTITION_SUBTYPE_APP_OTA_0 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 0, //!< OTA partition 0
ESP_PARTITION_SUBTYPE_APP_OTA_1 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 1, //!< OTA partition 1
ESP_PARTITION_SUBTYPE_APP_OTA_2 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 2, //!< OTA partition 2
ESP_PARTITION_SUBTYPE_APP_OTA_3 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 3, //!< OTA partition 3
ESP_PARTITION_SUBTYPE_APP_OTA_4 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 4, //!< OTA partition 4
ESP_PARTITION_SUBTYPE_APP_OTA_5 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 5, //!< OTA partition 5
ESP_PARTITION_SUBTYPE_APP_OTA_6 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 6, //!< OTA partition 6
ESP_PARTITION_SUBTYPE_APP_OTA_7 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 7, //!< OTA partition 7
ESP_PARTITION_SUBTYPE_APP_OTA_8 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 8, //!< OTA partition 8
ESP_PARTITION_SUBTYPE_APP_OTA_9 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 9, //!< OTA partition 9
ESP_PARTITION_SUBTYPE_APP_OTA_10 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 10,//!< OTA partition 10
ESP_PARTITION_SUBTYPE_APP_OTA_11 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 11,//!< OTA partition 11
ESP_PARTITION_SUBTYPE_APP_OTA_12 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 12,//!< OTA partition 12
ESP_PARTITION_SUBTYPE_APP_OTA_13 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 13,//!< OTA partition 13
ESP_PARTITION_SUBTYPE_APP_OTA_14 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 14,//!< OTA partition 14
ESP_PARTITION_SUBTYPE_APP_OTA_15 = ESP_PARTITION_SUBTYPE_APP_OTA_MIN + 15,//!< OTA partition 15
ESP_PARTITION_SUBTYPE_APP_OTA_MAX = 15, //!< Max subtype of OTA partition
ESP_PARTITION_SUBTYPE_APP_TEST = 0x20, //!< Test application partition
ESP_PARTITION_SUBTYPE_DATA_OTA = 0x00, //!< OTA selection partition
ESP_PARTITION_SUBTYPE_DATA_PHY = 0x01, //!< PHY init data partition
ESP_PARTITION_SUBTYPE_DATA_NVS = 0x02, //!< NVS partition
ESP_PARTITION_SUBTYPE_DATA_COREDUMP = 0x03, //!< COREDUMP partition
ESP_PARTITION_SUBTYPE_DATA_ESPHTTPD = 0x80, //!< ESPHTTPD partition
ESP_PARTITION_SUBTYPE_DATA_FAT = 0x81, //!< FAT partition
ESP_PARTITION_SUBTYPE_DATA_SPIFFS = 0x82, //!< SPIFFS partition
ESP_PARTITION_SUBTYPE_ANY = 0xff, //!< Used to search for partitions with any subtype
} esp_partition_subtype_t;
/**
* @brief Convenience macro to get esp_partition_subtype_t value for the i-th OTA partition
*/
#define ESP_PARTITION_SUBTYPE_OTA(i) ((esp_partition_subtype_t)(ESP_PARTITION_SUBTYPE_APP_OTA_MIN + ((i) & 0xf)))
/**
* @brief Opaque partition iterator type
*/
typedef struct esp_partition_iterator_opaque_* esp_partition_iterator_t;
/**
* @brief partition information structure
*
* This is not the format in flash, that format is esp_partition_info_t.
*
* However, this is the format used by this API.
*/
typedef struct {
esp_partition_type_t type; /*!< partition type (app/data) */
esp_partition_subtype_t subtype; /*!< partition subtype */
uint32_t address; /*!< starting address of the partition in flash */
uint32_t size; /*!< size of the partition, in bytes */
char label[17]; /*!< partition label, zero-terminated ASCII string */
bool encrypted; /*!< flag is set to true if partition is encrypted */
} esp_partition_t;
/**
* @brief Find partition based on one or more parameters
*
* @param type Partition type, one of esp_partition_type_t values
* @param subtype Partition subtype, one of esp_partition_subtype_t values.
* To find all partitions of given type, use
* ESP_PARTITION_SUBTYPE_ANY.
* @param label (optional) Partition label. Set this value if looking
* for partition with a specific name. Pass NULL otherwise.
*
* @return iterator which can be used to enumerate all the partitions found,
* or NULL if no partitions were found.
* Iterator obtained through this function has to be released
* using esp_partition_iterator_release when not used any more.
*/
esp_partition_iterator_t esp_partition_find(esp_partition_type_t type, esp_partition_subtype_t subtype, const char* label);
/**
* @brief Find first partition based on one or more parameters
*
* @param type Partition type, one of esp_partition_type_t values
* @param subtype Partition subtype, one of esp_partition_subtype_t values.
* To find all partitions of given type, use
* ESP_PARTITION_SUBTYPE_ANY.
* @param label (optional) Partition label. Set this value if looking
* for partition with a specific name. Pass NULL otherwise.
*
* @return pointer to esp_partition_t structure, or NULL if no partition is found.
* This pointer is valid for the lifetime of the application.
*/
const esp_partition_t* esp_partition_find_first(esp_partition_type_t type, esp_partition_subtype_t subtype, const char* label);
/**
* @brief Get esp_partition_t structure for given partition
*
* @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
*
* @return pointer to esp_partition_t structure. This pointer is valid for the lifetime
* of the application.
*/
const esp_partition_t* esp_partition_get(esp_partition_iterator_t iterator);
/**
* @brief Move partition iterator to the next partition found
*
* Any copies of the iterator will be invalid after this call.
*
* @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
*
* @return NULL if no partition was found, valid esp_partition_iterator_t otherwise.
*/
esp_partition_iterator_t esp_partition_next(esp_partition_iterator_t iterator);
/**
* @brief Release partition iterator
*
* @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
*
*/
void esp_partition_iterator_release(esp_partition_iterator_t iterator);
/**
* @brief Read data from the partition
*
* @param partition Pointer to partition structure obtained using
* esp_partition_find_first or esp_partition_get.
* Must be non-NULL.
* @param dst Pointer to the buffer where data should be stored.
* Pointer must be non-NULL and buffer must be at least 'size' bytes long.
* @param src_offset Address of the data to be read, relative to the
* beginning of the partition.
* @param size Size of data to be read, in bytes.
*
* @return ESP_OK, if data was read successfully;
* ESP_ERR_INVALID_ARG, if src_offset exceeds partition size;
* ESP_ERR_INVALID_SIZE, if read would go out of bounds of the partition;
* or one of error codes from lower-level flash driver.
*/
esp_err_t esp_partition_read(const esp_partition_t* partition,
size_t src_offset, void* dst, size_t size);
/**
* @brief Write data to the partition
*
* Before writing data to flash, corresponding region of flash needs to be erased.
* This can be done using esp_partition_erase_range function.
*
* @param partition Pointer to partition structure obtained using
* esp_partition_find_first or esp_partition_get.
* Must be non-NULL.
* @param dst_offset Address where the data should be written, relative to the
* beginning of the partition.
* @param src Pointer to the source buffer. Pointer must be non-NULL and
* buffer must be at least 'size' bytes long.
* @param size Size of data to be written, in bytes.
*
* @note Prior to writing to flash memory, make sure it has been erased with
* esp_partition_erase_range call.
*
* @return ESP_OK, if data was written successfully;
* ESP_ERR_INVALID_ARG, if dst_offset exceeds partition size;
* ESP_ERR_INVALID_SIZE, if write would go out of bounds of the partition;
* or one of error codes from lower-level flash driver.
*/
esp_err_t esp_partition_write(const esp_partition_t* partition,
size_t dst_offset, const void* src, size_t size);
/**
* @brief Erase part of the partition
*
* @param partition Pointer to partition structure obtained using
* esp_partition_find_first or esp_partition_get.
* Must be non-NULL.
* @param start_addr Address where erase operation should start. Must be aligned
* to 4 kilobytes.
* @param size Size of the range which should be erased, in bytes.
* Must be divisible by 4 kilobytes.
*
* @return ESP_OK, if the range was erased successfully;
* ESP_ERR_INVALID_ARG, if iterator or dst are NULL;
* ESP_ERR_INVALID_SIZE, if erase would go out of bounds of the partition;
* or one of error codes from lower-level flash driver.
*/
esp_err_t esp_partition_erase_range(const esp_partition_t* partition,
uint32_t start_addr, uint32_t size);
/**
* @brief Configure MMU to map partition into data memory
*
* Unlike spi_flash_mmap function, which requires a 64kB aligned base address,
* this function doesn't impose such a requirement.
* If offset results in a flash address which is not aligned to 64kB boundary,
* address will be rounded to the lower 64kB boundary, so that mapped region
* includes requested range.
* Pointer returned via out_ptr argument will be adjusted to point to the
* requested offset (not necessarily to the beginning of mmap-ed region).
*
* To release mapped memory, pass handle returned via out_handle argument to
* spi_flash_munmap function.
*
* @param partition Pointer to partition structure obtained using
* esp_partition_find_first or esp_partition_get.
* Must be non-NULL.
* @param offset Offset from the beginning of partition where mapping should start.
* @param size Size of the area to be mapped.
* @param memory Memory space where the region should be mapped
* @param out_ptr Output, pointer to the mapped memory region
* @param out_handle Output, handle which should be used for spi_flash_munmap call
*
* @return ESP_OK, if successful
*/
esp_err_t esp_partition_mmap(const esp_partition_t* partition, uint32_t offset, uint32_t size,
spi_flash_mmap_memory_t memory,
const void** out_ptr, spi_flash_mmap_handle_t* out_handle);
#ifdef __cplusplus
}
#endif
#endif /* __ESP_PARTITION_H__ */