78 lines
3.3 KiB
C
78 lines
3.3 KiB
C
// Copyright 2018 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_image_format.h"
|
|
|
|
/**
|
|
* @brief Load partition table.
|
|
*
|
|
* Parse partition table, get useful data such as location of
|
|
* OTA data partition, factory app partition, and test app partition.
|
|
*
|
|
* @param[out] bs Bootloader state structure used to save read data.
|
|
* @return Return true if the partition table was succesfully loaded and MD5 checksum is valid.
|
|
*/
|
|
bool bootloader_utility_load_partition_table(bootloader_state_t* bs);
|
|
|
|
/**
|
|
* @brief Return the index of the selected boot partition.
|
|
*
|
|
* This is the preferred boot partition, as determined by the partition table &
|
|
* any OTA sequence number found in OTA data.
|
|
* This partition will only be booted if it contains a valid app image, otherwise load_boot_image() will search
|
|
* for a valid partition using this selection as the starting point.
|
|
*
|
|
* @param[in] bs Bootloader state structure.
|
|
* @return Returns the index on success, INVALID_INDEX otherwise.
|
|
*/
|
|
int bootloader_utility_get_selected_boot_partition(const bootloader_state_t *bs);
|
|
|
|
/**
|
|
* @brief Load the selected partition and start application.
|
|
*
|
|
* Start from partition 'start_index', if not bootable then work backwards to FACTORY_INDEX
|
|
* (ie try any OTA slots in descending order and then the factory partition).
|
|
* If still nothing, start from 'start_index + 1' and work up to highest numbered OTA partition.
|
|
* If still nothing, try TEST_APP_INDEX.
|
|
* Everything this function calls must be located in the iram_loader_seg segment.
|
|
*
|
|
* @param[in] bs Bootloader state structure.
|
|
* @param[in] start_index The index from which the search for images begins.
|
|
*/
|
|
__attribute__((noreturn)) void bootloader_utility_load_boot_image(const bootloader_state_t *bs, int start_index);
|
|
|
|
|
|
/**
|
|
* @brief Software reset the ESP32
|
|
*
|
|
* Bootloader code should call this in the case that it cannot proceed.
|
|
*
|
|
* It is not recommended to call this function from an app (if called, the app will abort).
|
|
*/
|
|
__attribute__((noreturn)) void bootloader_reset(void);
|
|
|
|
/** @brief Generates the digest of the data between offset & offset+length.
|
|
*
|
|
* This function should be used when the size of the data is larger than 3.2MB.
|
|
* The MMU capacity is 3.2MB (50 pages - 64KB each). This function generates the SHA-256
|
|
* of the data in chunks of 3.2MB, considering the MMU capacity.
|
|
*
|
|
* @param[in] flash_offset Offset of the data in flash.
|
|
* @param[in] len Length of data in bytes.
|
|
* @param[out] digest Pointer to buffer where the digest is written, if ESP_OK is returned.
|
|
*
|
|
* @return ESP_OK if secure boot digest is generated successfully.
|
|
*/
|
|
esp_err_t bootloader_sha256_flash_contents(uint32_t flash_offset, uint32_t len, uint8_t *digest); |