3f2d6a0891
1. move chip-specific code(e.g. encryption) into IDF_TARGET directory 2. splict app-only code to idf directory which won't be compiled into bootloader
88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
// Copyright 2018 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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//
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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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#pragma once
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#include "bootloader_config.h"
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#include "esp_image_format.h"
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/**
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* @brief Load partition table.
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*
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* Parse partition table, get useful data such as location of
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* OTA data partition, factory app partition, and test app partition.
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*
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* @param[out] bs Bootloader state structure used to save read data.
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* @return Return true if the partition table was succesfully loaded and MD5 checksum is valid.
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*/
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bool bootloader_utility_load_partition_table(bootloader_state_t* bs);
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/**
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* @brief Return the index of the selected boot partition.
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*
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* This is the preferred boot partition, as determined by the partition table &
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* any OTA sequence number found in OTA data.
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* This partition will only be booted if it contains a valid app image, otherwise load_boot_image() will search
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* for a valid partition using this selection as the starting point.
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*
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* @param[in] bs Bootloader state structure.
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* @return Returns the index on success, INVALID_INDEX otherwise.
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*/
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int bootloader_utility_get_selected_boot_partition(const bootloader_state_t *bs);
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/**
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* @brief Load the selected partition and start application.
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*
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* Start from partition 'start_index', if not bootable then work backwards to FACTORY_INDEX
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* (ie try any OTA slots in descending order and then the factory partition).
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* If still nothing, start from 'start_index + 1' and work up to highest numbered OTA partition.
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* If still nothing, try TEST_APP_INDEX.
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* Everything this function calls must be located in the iram_loader_seg segment.
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*
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* @param[in] bs Bootloader state structure.
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* @param[in] start_index The index from which the search for images begins.
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*/
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__attribute__((noreturn)) void bootloader_utility_load_boot_image(const bootloader_state_t *bs, int start_index);
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/**
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* @brief Software reset the ESP32
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*
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* Bootloader code should call this in the case that it cannot proceed.
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*
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* It is not recommended to call this function from an app (if called, the app will abort).
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*/
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__attribute__((noreturn)) void bootloader_reset(void);
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/**
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* @brief Converts an array to a printable string.
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*
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* This function is useful for printing SHA-256 digest.
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* \code{c}
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* // Example of using. image_hash will be printed
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* #define HASH_LEN 32 // SHA-256 digest length
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* ...
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* char hash_print[HASH_LEN * 2 + 1];
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* hash_print[HASH_LEN * 2] = 0;
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* bootloader_sha256_hex_to_str(hash_print, image_hash, HASH_LEN);
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* ESP_LOGI(TAG, %s", hash_print);
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* \endcode
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* @param[out] out_str Output string
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* @param[in] in_array_hex Pointer to input array
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* @param[in] len Length of input array
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*
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* @return ESP_OK: Successful
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* ESP_ERR_INVALID_ARG: Error in the passed arguments
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*/
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esp_err_t bootloader_sha256_hex_to_str(char *out_str, const uint8_t *in_array_hex, size_t len);
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