esp-idf/components/bootloader_support/include_bootloader/bootloader_init.h
2021-05-10 04:58:34 +02:00

52 lines
1.1 KiB
C

/*
* SPDX-FileCopyrightText: 2018-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include "esp_err.h"
#include "esp_image_format.h"
/**@{*/
/**
* @brief labels from bootloader linker script: bootloader.ld
*
*/
extern int _bss_start;
extern int _bss_end;
extern int _data_start;
extern int _data_end;
/**@}*/
/**
* @brief bootloader image header
*
*/
extern esp_image_header_t bootloader_image_hdr;
/**@{*/
/**
* @brief Common initialization steps that are applied to all targets.
*
*/
esp_err_t bootloader_read_bootloader_header(void);
esp_err_t bootloader_check_bootloader_validity(void);
void bootloader_clear_bss_section(void);
void bootloader_config_wdt(void);
void bootloader_enable_random(void);
void bootloader_print_banner(void);
/**@}*/
/* @brief Prepares hardware for work.
*
* Setting up:
* - Disable Cache access for both CPUs;
* - Initialise cache mmu;
* - Setting up pins and mode for SD, SPI, UART, Clocking.
* @return ESP_OK - If the setting is successful.
* ESP_FAIL - If the setting is not successful.
*/
esp_err_t bootloader_init(void);