| // Copyright 2021 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #include "pw_boot/boot.h" |
| |
| #include <array> |
| |
| #include "FreeRTOS.h" |
| #include "pw_boot_cortex_m/boot.h" |
| #include "pw_malloc/malloc.h" |
| #include "pw_preprocessor/compiler.h" |
| #include "pw_string/util.h" |
| #include "pw_sys_io_stm32cube/init.h" |
| #include "pw_system/init.h" |
| #include "stm32f4xx.h" |
| #include "task.h" |
| |
| namespace { |
| |
| std::array<StackType_t, configMINIMAL_STACK_SIZE> freertos_idle_stack; |
| StaticTask_t freertos_idle_tcb; |
| |
| std::array<StackType_t, configTIMER_TASK_STACK_DEPTH> freertos_timer_stack; |
| StaticTask_t freertos_timer_tcb; |
| |
| std::array<char, configMAX_TASK_NAME_LEN> temp_thread_name_buffer; |
| |
| } // namespace |
| |
| // Initializes clock to its max, 180Mhz. Note that this naming follows CubeMX's |
| // naming out of convention. It's not required that this target provides a |
| // symbol named SystemClock_Config. This function shares the same purpose as |
| // the symbol of the same name that is generated by CubeMX. |
| extern "C" void SystemClock_Config() { |
| RCC_OscInitTypeDef RCC_OscInitStruct = {}; |
| RCC_ClkInitTypeDef RCC_ClkInitStruct = {}; |
| |
| __HAL_RCC_PWR_CLK_ENABLE(); |
| __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); |
| |
| RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; |
| RCC_OscInitStruct.HSEState = RCC_HSE_ON; |
| RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
| RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; |
| RCC_OscInitStruct.PLL.PLLM = 4; |
| RCC_OscInitStruct.PLL.PLLN = 180; |
| RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; |
| RCC_OscInitStruct.PLL.PLLQ = 8; |
| if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
| pw_boot_PostMain(); |
| } |
| |
| // OverDrive required for operation > 168Mhz |
| if (HAL_PWREx_EnableOverDrive() != HAL_OK) { |
| pw_boot_PostMain(); |
| } |
| |
| RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | |
| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2; |
| RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; |
| RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; |
| RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; |
| RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; |
| |
| if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) { |
| pw_boot_PostMain(); |
| } |
| } |
| |
| // Functions needed when configGENERATE_RUN_TIME_STATS is on. |
| extern "C" void configureTimerForRunTimeStats(void) {} |
| extern "C" unsigned long getRunTimeCounterValue(void) { return uwTick; } |
| |
| // Required for configCHECK_FOR_STACK_OVERFLOW. |
| extern "C" void vApplicationStackOverflowHook(TaskHandle_t, char* pcTaskName) { |
| pw::string::Copy(pcTaskName, temp_thread_name_buffer); |
| PW_CRASH("Stack OVF for task %s", temp_thread_name_buffer.data()); |
| } |
| |
| // Required for configUSE_TIMERS. |
| extern "C" void vApplicationGetTimerTaskMemory( |
| StaticTask_t** ppxTimerTaskTCBBuffer, |
| StackType_t** ppxTimerTaskStackBuffer, |
| uint32_t* pulTimerTaskStackSize) { |
| *ppxTimerTaskTCBBuffer = &freertos_timer_tcb; |
| *ppxTimerTaskStackBuffer = freertos_timer_stack.data(); |
| *pulTimerTaskStackSize = freertos_timer_stack.size(); |
| } |
| |
| extern "C" void vApplicationGetIdleTaskMemory( |
| StaticTask_t** ppxIdleTaskTCBBuffer, |
| StackType_t** ppxIdleTaskStackBuffer, |
| uint32_t* pulIdleTaskStackSize) { |
| *ppxIdleTaskTCBBuffer = &freertos_idle_tcb; |
| *ppxIdleTaskStackBuffer = freertos_idle_stack.data(); |
| *pulIdleTaskStackSize = freertos_idle_stack.size(); |
| } |
| |
| extern "C" void pw_boot_PreStaticMemoryInit() {} |
| |
| extern "C" void pw_boot_PreStaticConstructorInit() { |
| // Provided by STMicroelectronics SDK. Can be configured to be provided |
| // elsewhere by changing pw_third_party_stm32cube_CMSIS_INIT. |
| SystemInit(); |
| |
| // Provided by the STMicroelectronics SDK. |
| HAL_Init(); |
| |
| // Typically provided by CubeMX codegen, SystemClock_Config() is instead |
| // provided as part of this target. |
| SystemClock_Config(); |
| |
| #if PW_MALLOC_ACTIVE |
| pw_MallocInit(&pw_boot_heap_low_addr, &pw_boot_heap_high_addr); |
| #endif // PW_MALLOC_ACTIVE |
| pw_sys_io_Init(); |
| } |
| |
| // TODO(amontanez): pw_boot_PreMainInit() should get renamed to |
| // pw_boot_FinalizeBoot or similar when main() is removed. |
| extern "C" void pw_boot_PreMainInit() { |
| pw::system::Init(); |
| vTaskStartScheduler(); |
| PW_UNREACHABLE; |
| } |
| |
| // This `main()` stub prevents another main function from being linked since |
| // this target deliberately doesn't run `main()`. |
| extern "C" int main() {} |
| |
| extern "C" PW_NO_RETURN void pw_boot_PostMain() { |
| // In case main() returns, just sit here until the device is reset. |
| while (true) { |
| } |
| PW_UNREACHABLE; |
| } |