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46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <stdint.h>
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#include "esp_err.h"
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#include "esp_flash_partitions.h"
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#include "esp_image_format.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// TEE otadata magic is derived from sha256 of "tee_ota" string
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#define TEE_OTADATA_MAGIC 0x4337e1e1
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/* TEE OTA selection structure (two copies in the TEE OTA data partition) */
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typedef struct {
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uint32_t magic; // A magic byte for otadata structure
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uint8_t version; // OTA image version
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uint8_t boot_partition; // Default boot partition
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uint8_t ota_state; // OTA_DATA states for checking operability of the app
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uint8_t reserved_1; // Reserved field 1
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uint32_t reserved_2[5]; // Reserved fields 2
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uint32_t crc; // CRC32 of all fields in the structure
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} __attribute__((packed)) esp_tee_ota_select_entry_t;
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ESP_STATIC_ASSERT(offsetof(esp_tee_ota_select_entry_t, crc) == sizeof(esp_tee_ota_select_entry_t) - sizeof(uint32_t));
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// OTA_DATA states for checking operability of the app.
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typedef enum {
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ESP_TEE_OTA_IMG_NEW = 0x00U, /*!< Monitor the first boot - the bootloader changes the state to PENDING_VERIFY. */
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ESP_TEE_OTA_IMG_PENDING_VERIFY = 0x33U, /*!< If encountered during the second boot, the bootloader changes the state to INVALID. */
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ESP_TEE_OTA_IMG_INVALID = 0x55U, /*!< App was confirmed as workable - can boot and work without limits. */
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ESP_TEE_OTA_IMG_VALID = 0xAAU, /*!< App was confirmed as non-workable - will not selected to boot at all. */
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ESP_TEE_OTA_IMG_UNDEFINED = 0xFFU, /*!< Undefined. */
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} esp_tee_ota_img_states_t;
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#ifdef __cplusplus
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}
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#endif
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