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