1 // Copyright 2017 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #pragma once 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 /** @brief Configure clocks for early boot 22 * 23 * Called by bootloader, or by the app if the bootloader version is old (pre v2.1). 24 */ 25 void bootloader_clock_configure(void); 26 27 /** @brief Return the rated maximum frequency of this chip 28 */ 29 int bootloader_clock_get_rated_freq_mhz(void); 30 31 #ifdef __cplusplus 32 } 33 #endif 34