Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 1 | // Copyright 2021 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://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, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | |
| 15 | #include "pw_boot/boot.h" |
| 16 | |
| 17 | #include <array> |
| 18 | |
| 19 | #include "FreeRTOS.h" |
| 20 | #include "pw_boot_cortex_m/boot.h" |
| 21 | #include "pw_malloc/malloc.h" |
| 22 | #include "pw_preprocessor/compiler.h" |
| 23 | #include "pw_string/util.h" |
| 24 | #include "pw_sys_io_stm32cube/init.h" |
Armando Montanez | 2c042f9 | 2021-12-15 14:55:36 -0800 | [diff] [blame^] | 25 | #include "pw_system/init.h" |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 26 | #include "stm32f4xx.h" |
| 27 | #include "task.h" |
| 28 | |
| 29 | namespace { |
| 30 | |
| 31 | std::array<StackType_t, configMINIMAL_STACK_SIZE> freertos_idle_stack; |
| 32 | StaticTask_t freertos_idle_tcb; |
| 33 | |
| 34 | std::array<StackType_t, configTIMER_TASK_STACK_DEPTH> freertos_timer_stack; |
| 35 | StaticTask_t freertos_timer_tcb; |
| 36 | |
Armando Montanez | 2c042f9 | 2021-12-15 14:55:36 -0800 | [diff] [blame^] | 37 | std::array<char, configMAX_TASK_NAME_LEN> temp_thread_name_buffer; |
| 38 | |
| 39 | } // namespace |
| 40 | |
| 41 | // Initializes clock to its max, 180Mhz. Note that this naming follows CubeMX's |
| 42 | // naming out of convention. It's not required that this target provides a |
| 43 | // symbol named SystemClock_Config. This function shares the same purpose as |
| 44 | // the symbol of the same name that is generated by CubeMX. |
| 45 | extern "C" void SystemClock_Config() { |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 46 | RCC_OscInitTypeDef RCC_OscInitStruct = {}; |
| 47 | RCC_ClkInitTypeDef RCC_ClkInitStruct = {}; |
| 48 | |
| 49 | __HAL_RCC_PWR_CLK_ENABLE(); |
| 50 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); |
| 51 | |
| 52 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; |
| 53 | RCC_OscInitStruct.HSEState = RCC_HSE_ON; |
| 54 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
| 55 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; |
| 56 | RCC_OscInitStruct.PLL.PLLM = 4; |
| 57 | RCC_OscInitStruct.PLL.PLLN = 180; |
| 58 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; |
| 59 | RCC_OscInitStruct.PLL.PLLQ = 8; |
| 60 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
| 61 | pw_boot_PostMain(); |
| 62 | } |
| 63 | |
| 64 | // OverDrive required for operation > 168Mhz |
| 65 | if (HAL_PWREx_EnableOverDrive() != HAL_OK) { |
| 66 | pw_boot_PostMain(); |
| 67 | } |
| 68 | |
| 69 | RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | |
| 70 | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2; |
| 71 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; |
| 72 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; |
| 73 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; |
| 74 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; |
| 75 | |
| 76 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) { |
| 77 | pw_boot_PostMain(); |
| 78 | } |
| 79 | } |
| 80 | |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 81 | // Functions needed when configGENERATE_RUN_TIME_STATS is on. |
| 82 | extern "C" void configureTimerForRunTimeStats(void) {} |
| 83 | extern "C" unsigned long getRunTimeCounterValue(void) { return uwTick; } |
| 84 | |
| 85 | // Required for configCHECK_FOR_STACK_OVERFLOW. |
| 86 | extern "C" void vApplicationStackOverflowHook(TaskHandle_t, char* pcTaskName) { |
| 87 | pw::string::Copy(pcTaskName, temp_thread_name_buffer); |
| 88 | PW_CRASH("Stack OVF for task %s", temp_thread_name_buffer.data()); |
| 89 | } |
| 90 | |
| 91 | // Required for configUSE_TIMERS. |
| 92 | extern "C" void vApplicationGetTimerTaskMemory( |
| 93 | StaticTask_t** ppxIdleTaskTCBBuffer, |
| 94 | StackType_t** ppxIdleTaskStackBuffer, |
| 95 | uint32_t* pulIdleTaskStackSize) { |
| 96 | *ppxIdleTaskTCBBuffer = &freertos_idle_tcb; |
| 97 | *ppxIdleTaskStackBuffer = freertos_idle_stack.data(); |
| 98 | *pulIdleTaskStackSize = freertos_idle_stack.size(); |
| 99 | } |
| 100 | |
| 101 | extern "C" void vApplicationGetIdleTaskMemory( |
| 102 | StaticTask_t** ppxIdleTaskTCBBuffer, |
| 103 | StackType_t** ppxIdleTaskStackBuffer, |
| 104 | uint32_t* pulIdleTaskStackSize) { |
| 105 | *ppxIdleTaskTCBBuffer = &freertos_timer_tcb; |
| 106 | *ppxIdleTaskStackBuffer = freertos_timer_stack.data(); |
| 107 | *pulIdleTaskStackSize = freertos_timer_stack.size(); |
| 108 | } |
| 109 | |
Armando Montanez | 2c042f9 | 2021-12-15 14:55:36 -0800 | [diff] [blame^] | 110 | extern "C" void pw_boot_PreStaticMemoryInit() {} |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 111 | |
| 112 | extern "C" void pw_boot_PreStaticConstructorInit() { |
Armando Montanez | 2c042f9 | 2021-12-15 14:55:36 -0800 | [diff] [blame^] | 113 | // Provided by STMicroelectronics SDK. Can be configured to be provided |
| 114 | // elsewhere by changing pw_third_party_stm32cube_CMSIS_INIT. |
| 115 | SystemInit(); |
| 116 | |
| 117 | // Provided by the STMicroelectronics SDK. |
| 118 | HAL_Init(); |
| 119 | |
| 120 | // Typically provided by CubeMX codegen, SystemClock_Config() is instead |
| 121 | // provided as part of this target. |
| 122 | SystemClock_Config(); |
| 123 | |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 124 | #if PW_MALLOC_ACTIVE |
| 125 | pw_MallocInit(&pw_boot_heap_low_addr, &pw_boot_heap_high_addr); |
| 126 | #endif // PW_MALLOC_ACTIVE |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 127 | pw_sys_io_Init(); |
| 128 | } |
| 129 | |
Armando Montanez | 2c042f9 | 2021-12-15 14:55:36 -0800 | [diff] [blame^] | 130 | // TODO(amontanez): pw_boot_PreMainInit() should get renamed to |
| 131 | // pw_boot_FinalizeBoot or similar when main() is removed. |
| 132 | extern "C" void pw_boot_PreMainInit() { |
| 133 | pw::system::Init(); |
| 134 | vTaskStartScheduler(); |
| 135 | PW_UNREACHABLE; |
| 136 | } |
| 137 | |
| 138 | // This `main()` stub prevents another main function from being linked since |
| 139 | // this target deliberately doesn't run `main()`. |
| 140 | extern "C" int main() {} |
| 141 | |
Armando Montanez | c62a2d2 | 2021-12-08 16:02:07 -0800 | [diff] [blame] | 142 | extern "C" PW_NO_RETURN void pw_boot_PostMain() { |
| 143 | // In case main() returns, just sit here until the device is reset. |
| 144 | while (true) { |
| 145 | } |
| 146 | PW_UNREACHABLE; |
| 147 | } |