text: /*
   * SPDX-FileCopyrightText: 2017-2021 Espressif Systems (Shanghai) CO LTD
   *
   * SPDX-License-Identifier: Apache-2.0
   */
  
  #include "esp_efuse.h"
  #include "esp_efuse_utility.h"
  #include "esp_efuse_table.h"
  #include "stdlib.h"
  #include "esp_types.h"
  #include "esp32h2/rom/efuse.h"
  #include "assert.h"
  #include "esp_err.h"
  #include "esp_log.h"
  #include "soc/efuse_periph.h"
  #include "bootloader_random.h"
  #include "sys/param.h"
  
  static __attribute__((unused)) const char *TAG = "efuse";
  
  // Contains functions that provide access to efuse fields which are often used in IDF.
  
  // Returns chip version from efuse
  uint8_t esp_efuse_get_chip_ver(void)
  {
      uint32_t chip_ver = 0;
      esp_efuse_read_field_blob(ESP_EFUSE_WAFER_VERSION, &chip_ver, ESP_EFUSE_WAFER_VERSION[0]->bit_count);
      return chip_ver;
  }
  
  // Returns chip package from efuse
  uint32_t esp_efuse_get_pkg_ver(void)
  {
      uint32_t pkg_ver = 0;
      esp_efuse_read_field_blob(ESP_EFUSE_PKG_VERSION, &pkg_ver, ESP_EFUSE_PKG_VERSION[0]->bit_count);
      return pkg_ver;
  }
  
  
  esp_err_t esp_efuse_set_rom_log_scheme(esp_efuse_rom_log_scheme_t log_scheme)
  {
      int cur_log_scheme = 0;
      esp_efuse_read_field_blob(ESP_EFUSE_UART_PRINT_CONTROL, &cur_log_scheme, 2);
      if (!cur_log_scheme) { // not burned yet
          return esp_efuse_write_field_blob(ESP_EFUSE_UART_PRINT_CONTROL, &log_scheme, 2);
      } else {
          return ESP_ERR_INVALID_STATE;
      }
  }
  
  esp_err_t esp_efuse_disable_rom_download_mode(void)
  {
      return esp_efuse_write_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE);
  }
  
  esp_err_t esp_efuse_enable_rom_secure_download_mode(void)
  {
      if (esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE)) {
          return ESP_ERR_INVALID_STATE;
      }
      return esp_efuse_write_field_bit(ESP_EFUSE_ENABLE_SECURITY_DOWNLOAD);
  }
  