1 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 #ifndef __ESP_PARTITION_H__
16 #define __ESP_PARTITION_H__
22 #include "esp_spi_flash.h"
29 ESP_PARTITION_APP_MASK = 0x0000,
30 ESP_PARTITION_APP_FACTORY = ESP_PARTITION_APP_MASK | 0x00,
31 ESP_PARTITION_APP_OTA_MIN = ESP_PARTITION_APP_MASK | 0x10,
32 ESP_PARTITION_APP_OTA_0 = ESP_PARTITION_APP_OTA_MIN + 0,
33 ESP_PARTITION_APP_OTA_1 = ESP_PARTITION_APP_OTA_MIN + 1,
34 ESP_PARTITION_APP_OTA_2 = ESP_PARTITION_APP_OTA_MIN + 2,
35 ESP_PARTITION_APP_OTA_3 = ESP_PARTITION_APP_OTA_MIN + 3,
36 ESP_PARTITION_APP_OTA_4 = ESP_PARTITION_APP_OTA_MIN + 4,
37 ESP_PARTITION_APP_OTA_5 = ESP_PARTITION_APP_OTA_MIN + 5,
38 ESP_PARTITION_APP_OTA_6 = ESP_PARTITION_APP_OTA_MIN + 6,
39 ESP_PARTITION_APP_OTA_7 = ESP_PARTITION_APP_OTA_MIN + 7,
40 ESP_PARTITION_APP_OTA_8 = ESP_PARTITION_APP_OTA_MIN + 8,
41 ESP_PARTITION_APP_OTA_9 = ESP_PARTITION_APP_OTA_MIN + 9,
42 ESP_PARTITION_APP_OTA_10 = ESP_PARTITION_APP_OTA_MIN + 10,
43 ESP_PARTITION_APP_OTA_11 = ESP_PARTITION_APP_OTA_MIN + 11,
44 ESP_PARTITION_APP_OTA_12 = ESP_PARTITION_APP_OTA_MIN + 12,
45 ESP_PARTITION_APP_OTA_13 = ESP_PARTITION_APP_OTA_MIN + 13,
46 ESP_PARTITION_APP_OTA_14 = ESP_PARTITION_APP_OTA_MIN + 14,
47 ESP_PARTITION_APP_OTA_15 = ESP_PARTITION_APP_OTA_MIN + 15,
48 ESP_PARTITION_APP_OTA_MAX = ESP_PARTITION_APP_MASK | 0x1f,
49 ESP_PARTITION_APP_TEST = ESP_PARTITION_APP_MASK | 0x20,
50 ESP_PARTITION_APP_ANY = ESP_PARTITION_APP_MASK | 0xff,
52 ESP_PARTITION_DATA_MASK = 0x0100,
53 ESP_PARTITION_DATA_OTA = ESP_PARTITION_DATA_MASK | 0x00,
54 ESP_PARTITION_DATA_RF = ESP_PARTITION_DATA_MASK | 0x01,
55 ESP_PARTITION_DATA_WIFI = ESP_PARTITION_DATA_MASK | 0x02,
56 ESP_PARTITION_DATA_ANY = ESP_PARTITION_DATA_MASK | 0xff,
58 ESP_PARTITION_FILESYSTEM_MASK = 0x0200,
59 ESP_PARTITION_FILESYSTEM_ESPHTTPD = 0x0200,
60 ESP_PARTITION_FILESYSTEM_FAT = 0x0201,
61 ESP_PARTITION_FILESYSTEM_SPIFFS = 0x0202,
62 ESP_PARTITION_FILESYSTEM_ANY = 0x20ff,
64 ESP_PARTITION_END = 0xffff
65 } esp_partition_type_t;
67 #define ESP_PARTITION_APP_OTA(i) ((esp_partition_type_t)(ESP_PARTITION_APP_OTA_MIN + ((i) & 0xf)))
70 typedef struct esp_partition_iterator_opaque_* esp_partition_iterator_t;
73 esp_partition_type_t type;
81 * @brief Find partition based on one or more parameters
83 * @param type Partition type, one of esp_partition_type_t values
84 * To find all app partitions or all filesystem partitions,
85 * use ESP_PARTITION_APP_ANY or ESP_PARTITION_FILESYSTEM_ANY,
87 * @param label (optional) Partition label. Set this value if looking
88 * for partition with a specific name. Pass NULL otherwise.
90 * @return iterator which can be used to enumerate all the partitions found,
91 * or NULL if no partitions were found.
92 * Iterator obtained through this function has to be released
93 * using esp_partition_iterator_release when not used any more.
95 esp_partition_iterator_t esp_partition_find(esp_partition_type_t type, const char* label);
98 * @brief Find first partition based on one or more parameters
100 * @param type Partition type, one of esp_partition_type_t values
101 * To find all app partitions or all filesystem partitions,
102 * use ESP_PARTITION_APP_ANY or ESP_PARTITION_FILESYSTEM_ANY,
104 * @param label (optional) Partition label. Set this value if looking
105 * for partition with a specific name. Pass NULL otherwise.
107 * @return pointer to esp_partition_t structure, or NULL if no parition is found.
108 * This pointer is valid for the lifetime of the application.
110 const esp_partition_t* esp_partition_find_first(esp_partition_type_t type, const char* label);
113 * @brief Get esp_partition_t structure for given partition
115 * @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
117 * @return pointer to esp_partition_t structure. This pointer is valid for the lifetime
118 * of the application.
120 const esp_partition_t* esp_partition_get(esp_partition_iterator_t iterator);
123 * @brief Move partition iterator to the next partition found
125 * Any copies of the iterator will be invalid after this call.
127 * @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
129 * @return NULL if no partition was found, valid esp_partition_iterator_t otherwise.
131 esp_partition_iterator_t esp_partition_next(esp_partition_iterator_t iterator);
134 * @brief Release partition iterator
136 * Any pointers obtained using esp_partition_label function will be invalid
139 * @param iterator Iterator obtained using esp_partition_find. Must be non-NULL.
142 void esp_partition_iterator_release(esp_partition_iterator_t iterator);
145 * @brief Read data from the partition
147 * @param partition Pointer to partition structure obtained using
148 * esp_partition_find_first or esp_partition_get.
150 * @param dst Pointer to the buffer where data should be stored.
151 * Pointer must be non-NULL and buffer must be at least 'size' bytes long.
152 * @param src_offset Address of the data to be read, relative to the
153 * beginning of the partition.
154 * @param size Size of data to be read, in bytes.
156 * @return ESP_OK, if data was read successfully;
157 * ESP_ERR_INVALID_ARG, if iterator or src are NULL;
158 * ESP_ERR_INVALID_SIZE, if read would go out of bounds of the partition;
159 * or one of error codes from lower-level flash driver.
161 esp_err_t esp_partition_read(const esp_partition_t* partition,
162 size_t src_offset, void* dst, size_t size);
165 * @brief Write data to the partition
167 * Before writing data to flash, corresponding region of flash needs to be erased.
168 * This can be done using esp_partition_erase_range function.
170 * @param partition Pointer to partition structure obtained using
171 * esp_partition_find_first or esp_partition_get.
173 * @param dst_offset Address where the data should be written, relative to the
174 * beginning of the partition.
175 * @param src Pointer to the source buffer. Pointer must be non-NULL and
176 * buffer must be at least 'size' bytes long.
177 * @param size Size of data to be written, in bytes.
179 * @note Prior to writing to flash memory, make sure it has been erased with
180 * esp_partition_erase_range call.
182 * @return ESP_OK, if data was written successfully;
183 * ESP_ERR_INVALID_ARG, if iterator or dst are NULL;
184 * ESP_ERR_INVALID_SIZE, if write would go out of bounds of the partition;
185 * or one of error codes from lower-level flash driver.
187 esp_err_t esp_partition_write(const esp_partition_t* partition,
188 size_t dst_offset, const void* src, size_t size);
191 * @brief Erase part of the partition
193 * @param partition Pointer to partition structure obtained using
194 * esp_partition_find_first or esp_partition_get.
196 * @param start_addr Address where erase operation should start. Must be aligned
198 * @param size Size of the range which should be erased, in bytes.
199 * Must be divisible by 4 kilobytes.
201 * @return ESP_OK, if the range was erased successfully;
202 * ESP_ERR_INVALID_ARG, if iterator or dst are NULL;
203 * ESP_ERR_INVALID_SIZE, if erase would go out of bounds of the partition;
204 * or one of error codes from lower-level flash driver.
206 esp_err_t esp_partition_erase_range(const esp_partition_t* partition,
207 uint32_t start_addr, uint32_t size);
210 * @brief Configure MMU to map partition into data memory
212 * Unlike spi_flash_mmap function, which requires a 64kB aligned base address,
213 * this function doesn't impose such a requirement.
214 * If offset results in a flash address which is not aligned to 64kB boundary,
215 * address will be rounded to the lower 64kB boundary, so that mapped region
216 * includes requested range.
217 * Pointer returned via out_ptr argument will be adjusted to point to the
218 * requested offset (not necessarily to the beginning of mmap-ed region).
220 * To release mapped memory, pass handle returned via out_handle argument to
221 * spi_flash_munmap function.
223 * @param partition Pointer to partition structure obtained using
224 * esp_partition_find_first or esp_partition_get.
226 * @param offset Offset from the beginning of partition where mapping should start.
227 * @param size Size of the area to be mapped.
228 * @param memory Memory space where the region should be mapped
229 * @param out_ptr Output, pointer to the mapped memory region
230 * @param out_handle Output, handle which should be used for spi_flash_munmap call
232 * @return ESP_OK, if successful
234 esp_err_t esp_partition_mmap(const esp_partition_t* partition, uint32_t offset, uint32_t size,
235 spi_flash_mmap_memory_t memory,
236 const void** out_ptr, spi_flash_mmap_handle_t* out_handle);
244 #endif /* __ESP_PARTITION_H__ */