refactor (bootloader_support): include_bootloader/ -> private_include/

components/bootloader_support/private_include/bootloader_init.h

@@ -0,0 +1,51 @@
+/*
+ * 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);