mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
58a3e08895
Additionally, always enable the partition MD5 check if flash encryption is on in Release mode. This ensures the partition table ciphertext has not been modified (CVE-2021-27926). The exception is pre-V3.1 ESP-IDF bootloaders and partition tables, which don't have support for the MD5 entry.
117 lines
4.6 KiB
C
117 lines
4.6 KiB
C
// 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.
|
|
#pragma once
|
|
|
|
#include "esp_err.h"
|
|
#include "esp_types.h"
|
|
#include "sdkconfig.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define ESP_PARTITION_MAGIC 0x50AA
|
|
#define ESP_PARTITION_MAGIC_MD5 0xEBEB
|
|
|
|
#define PART_TYPE_APP 0x00
|
|
#define PART_SUBTYPE_FACTORY 0x00
|
|
#define PART_SUBTYPE_OTA_FLAG 0x10
|
|
#define PART_SUBTYPE_OTA_MASK 0x0f
|
|
#define PART_SUBTYPE_TEST 0x20
|
|
|
|
#define PART_TYPE_DATA 0x01
|
|
#define PART_SUBTYPE_DATA_OTA 0x00
|
|
#define PART_SUBTYPE_DATA_RF 0x01
|
|
#define PART_SUBTYPE_DATA_WIFI 0x02
|
|
#define PART_SUBTYPE_DATA_NVS_KEYS 0x04
|
|
#define PART_SUBTYPE_DATA_EFUSE_EM 0x05
|
|
|
|
#define PART_TYPE_END 0xff
|
|
#define PART_SUBTYPE_END 0xff
|
|
|
|
#define PART_FLAG_ENCRYPTED (1<<0)
|
|
|
|
/* The md5sum value is found this many bytes after the ESP_PARTITION_MAGIC_MD5 offset */
|
|
#define ESP_PARTITION_MD5_OFFSET 16
|
|
|
|
/* Pre-partition table fixed flash offsets */
|
|
#define ESP_BOOTLOADER_DIGEST_OFFSET 0x0
|
|
#define ESP_BOOTLOADER_OFFSET CONFIG_BOOTLOADER_OFFSET_IN_FLASH /* Offset of bootloader image. Has matching value in bootloader KConfig.projbuild file. */
|
|
#define ESP_PARTITION_TABLE_OFFSET CONFIG_PARTITION_TABLE_OFFSET /* Offset of partition table. Backwards-compatible name.*/
|
|
|
|
#define ESP_PARTITION_TABLE_MAX_LEN 0xC00 /* Maximum length of partition table data */
|
|
#define ESP_PARTITION_TABLE_MAX_ENTRIES (ESP_PARTITION_TABLE_MAX_LEN / sizeof(esp_partition_info_t)) /* Maximum length of partition table data, including terminating entry */
|
|
|
|
/// OTA_DATA states for checking operability of the app.
|
|
typedef enum {
|
|
ESP_OTA_IMG_NEW = 0x0U, /*!< Monitor the first boot. In bootloader this state is changed to ESP_OTA_IMG_PENDING_VERIFY. */
|
|
ESP_OTA_IMG_PENDING_VERIFY = 0x1U, /*!< First boot for this app was. If while the second boot this state is then it will be changed to ABORTED. */
|
|
ESP_OTA_IMG_VALID = 0x2U, /*!< App was confirmed as workable. App can boot and work without limits. */
|
|
ESP_OTA_IMG_INVALID = 0x3U, /*!< App was confirmed as non-workable. This app will not selected to boot at all. */
|
|
ESP_OTA_IMG_ABORTED = 0x4U, /*!< App could not confirm the workable or non-workable. In bootloader IMG_PENDING_VERIFY state will be changed to IMG_ABORTED. This app will not selected to boot at all. */
|
|
ESP_OTA_IMG_UNDEFINED = 0xFFFFFFFFU, /*!< Undefined. App can boot and work without limits. */
|
|
} esp_ota_img_states_t;
|
|
|
|
/* OTA selection structure (two copies in the OTA data partition.)
|
|
Size of 32 bytes is friendly to flash encryption */
|
|
typedef struct {
|
|
uint32_t ota_seq;
|
|
uint8_t seq_label[20];
|
|
uint32_t ota_state;
|
|
uint32_t crc; /* CRC32 of ota_seq field only */
|
|
} esp_ota_select_entry_t;
|
|
|
|
|
|
typedef struct {
|
|
uint32_t offset;
|
|
uint32_t size;
|
|
} esp_partition_pos_t;
|
|
|
|
/* Structure which describes the layout of partition table entry.
|
|
* See docs/partition_tables.rst for more information about individual fields.
|
|
*/
|
|
typedef struct {
|
|
uint16_t magic;
|
|
uint8_t type;
|
|
uint8_t subtype;
|
|
esp_partition_pos_t pos;
|
|
uint8_t label[16];
|
|
uint32_t flags;
|
|
} esp_partition_info_t;
|
|
|
|
/* @brief Verify the partition table
|
|
*
|
|
* @param partition_table Pointer to at least ESP_PARTITION_TABLE_MAX_ENTRIES of potential partition table data. (ESP_PARTITION_TABLE_MAX_LEN bytes.)
|
|
* @param log_errors Log errors if the partition table is invalid.
|
|
* @param num_partitions If result is ESP_OK, num_partitions is updated with total number of partitions (not including terminating entry).
|
|
*
|
|
* @return ESP_OK on success, ESP_ERR_INVALID_STATE if partition table is not valid.
|
|
*/
|
|
esp_err_t esp_partition_table_verify(const esp_partition_info_t *partition_table, bool log_errors, int *num_partitions);
|
|
|
|
|
|
/**
|
|
* Check whether the region on the main flash is safe to write.
|
|
*
|
|
* @param addr Start address of the region
|
|
* @param size Size of the region
|
|
*
|
|
* @return true if the region is safe to write, otherwise false.
|
|
*/
|
|
bool esp_partition_main_flash_region_safe(size_t addr, size_t size);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|