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Dependents: TYBLE16_simple_data_logger TYBLE16_MP3_Air
mbed_sdk_boot.c
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2017 ARM Limited 00003 * SPDX-License-Identifier: Apache-2.0 00004 * 00005 * Licensed under the Apache License, Version 2.0 (the "License"); 00006 * you may not use this file except in compliance with the License. 00007 * You may obtain a copy of the License at 00008 * 00009 * http://www.apache.org/licenses/LICENSE-2.0 00010 * 00011 * Unless required by applicable law or agreed to in writing, software 00012 * distributed under the License is distributed on an "AS IS" BASIS, 00013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00014 * See the License for the specific language governing permissions and 00015 * limitations under the License. 00016 */ 00017 00018 #include "mbed_toolchain.h" 00019 #include <stdlib.h> 00020 #include <stdint.h> 00021 #include "cmsis.h" 00022 #include "hal/us_ticker_api.h" 00023 00024 /* This startup is for mbed 2 baremetal. There is no config for RTOS for mbed 2, 00025 * therefore we protect this file with MBED_CONF_RTOS_PRESENT 00026 * Note: The new consolidated started for mbed OS is in rtos/mbed_boot code file. 00027 */ 00028 #if !defined(MBED_CONF_RTOS_PRESENT) 00029 00030 /* mbed_main is a function that is called before main() 00031 * mbed_sdk_init() is also a function that is called before main(), but unlike 00032 * mbed_main(), it is not meant for user code, but for the SDK itself to perform 00033 * initializations before main() is called. 00034 */ 00035 MBED_WEAK void mbed_main(void) 00036 { 00037 00038 } 00039 00040 /* This function can be implemented by the target to perform higher level target initialization 00041 */ 00042 MBED_WEAK void mbed_sdk_init(void) 00043 { 00044 00045 } 00046 00047 MBED_WEAK void software_init_hook_rtos() 00048 { 00049 // Nothing by default 00050 } 00051 00052 void mbed_copy_nvic(void) 00053 { 00054 /* If vector address in RAM is defined, copy and switch to dynamic vectors. Exceptions for M0 which doesn't have 00055 VTOR register and for A9 for which CMSIS doesn't define NVIC_SetVector; in both cases target code is 00056 responsible for correctly handling the vectors. 00057 */ 00058 #if !defined(__CORTEX_M0) && !defined(__CORTEX_A9) 00059 #ifdef NVIC_RAM_VECTOR_ADDRESS 00060 uint32_t *old_vectors = (uint32_t *)SCB->VTOR; 00061 uint32_t *vectors = (uint32_t *)NVIC_RAM_VECTOR_ADDRESS; 00062 for (int i = 0; i < NVIC_NUM_VECTORS; i++) { 00063 vectors[i] = old_vectors[i]; 00064 } 00065 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS; 00066 #endif /* NVIC_RAM_VECTOR_ADDRESS */ 00067 #endif /* !defined(__CORTEX_M0) && !defined(__CORTEX_A9) */ 00068 } 00069 00070 /* Toolchain specific main code */ 00071 00072 #if defined (__ARMCC_VERSION) 00073 00074 int $Super$$main(void); 00075 00076 int $Sub$$main(void) 00077 { 00078 mbed_main(); 00079 mbed_error_initialize(); 00080 return $Super$$main(); 00081 } 00082 00083 void _platform_post_stackheap_init(void) 00084 { 00085 mbed_copy_nvic(); 00086 mbed_sdk_init(); 00087 #if DEVICE_USTICKER && MBED_CONF_TARGET_INIT_US_TICKER_AT_BOOT 00088 us_ticker_init(); 00089 #endif 00090 } 00091 //Define an empty os_cb_sections to remove a RTX warning when building with no RTOS due 00092 //to the --keep=os_cb_sections linker option 00093 const uint32_t os_cb_sections[] __attribute__((section(".rodata"))) = {}; 00094 00095 #elif defined (__GNUC__) 00096 00097 extern int __real_main(void); 00098 00099 void software_init_hook(void) 00100 { 00101 mbed_copy_nvic(); 00102 mbed_sdk_init(); 00103 #if DEVICE_USTICKER && MBED_CONF_TARGET_INIT_US_TICKER_AT_BOOT 00104 us_ticker_init(); 00105 #endif 00106 software_init_hook_rtos(); 00107 } 00108 00109 00110 int __wrap_main(void) 00111 { 00112 mbed_main(); 00113 mbed_error_initialize(); 00114 return __real_main(); 00115 } 00116 00117 #elif defined (__ICCARM__) 00118 00119 int __low_level_init(void) 00120 { 00121 mbed_copy_nvic(); 00122 #if DEVICE_USTICKER && MBED_CONF_TARGET_INIT_US_TICKER_AT_BOOT 00123 us_ticker_init(); 00124 #endif 00125 return 1; 00126 } 00127 00128 #endif 00129 00130 #endif
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