cmvr_head/board/board.c

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-11-06     SummerGift   first version
 */

#include "board.h"

/**
  * @brief System Clock Configuration ，因为boot 开启了QSPI的时钟，故这里也要开启。要和boot 保持一致，如何要和
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Supply configuration update enable
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);

  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  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 = 5;
  RCC_OscInitStruct.PLL.PLLN = 192;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 20;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
  {
    Error_Handler();
  }
}
int MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct = {0};

  HAL_MPU_Disable();

  // Region 0: 默认 4GB NO_ACCESS（保留你原来的）
  MPU_InitStruct.Enable           = MPU_REGION_ENABLE;
  MPU_InitStruct.Number           = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress      = 0x00000000;
  MPU_InitStruct.Size             = MPU_REGION_SIZE_4GB;
  MPU_InitStruct.SubRegionDisable = 0x87;
  MPU_InitStruct.TypeExtField     = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec      = MPU_INSTRUCTION_ACCESS_DISABLE; // 默认都禁执行
  MPU_InitStruct.IsShareable      = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.IsCacheable      = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable     = MPU_ACCESS_NOT_BUFFERABLE;
  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  // Region 1: QSPI XIP 区域 0x9000_0000 (W25Q64 = 8MB)
  MPU_InitStruct.Enable           = MPU_REGION_ENABLE;
  MPU_InitStruct.Number           = MPU_REGION_NUMBER1;      // 编号更大 => 优先级更高
  MPU_InitStruct.BaseAddress      = 0x90000000;
  MPU_InitStruct.Size             = MPU_REGION_SIZE_8MB;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.TypeExtField     = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_PRIV_RO_URO;   // 只读;

  // 关键：XIP 必须允许取指（不要 XN）
  MPU_InitStruct.DisableExec      = MPU_INSTRUCTION_ACCESS_ENABLE; // 可执行


  // QSPI XIP 区域（0x9000_0000~）的 MPU 属性：按“Normal memory”处理以提升性能

  MPU_InitStruct.IsShareable  = MPU_ACCESS_NOT_SHAREABLE;  // 不共享：对只读代码区一般不需要共享语义
  // （注意：STM32 没硬件缓存一致性，DMA 一致性仍靠 clean/invalidate 或 non-cacheable buffer）

  MPU_InitStruct.IsCacheable  = MPU_ACCESS_CACHEABLE;      // 可缓存：允许进入 D-Cache（读数据更快，XIP 性能更好）
  // 升级写完新固件后跳转前建议 Invalidate I/D Cache，避免跑到旧缓存

  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;     // 可缓冲：允许写缓冲/合并，提高总线访问效率（配合 cacheable 的常用组合）
  // 不适用于外设寄存器区，但对 QSPI 映射的“内存型”区域一般没问题


  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
  return 0;
}

#define RT_APP_PART_ADDR     STM32_FLASH_START_ADDRESS
static int ota_app_vtor_reconfig(void)
{
  SCB->VTOR = RT_APP_PART_ADDR;
  return 0;
}
INIT_BOARD_EXPORT(ota_app_vtor_reconfig);
INIT_BOARD_EXPORT(MPU_Config);


// rt thread 的
// void __libc_init_array(void)
// {
//   /* we not use __libc init_aray to initialize C++ objects */
//   /* __libc_init_array is ARM code, not Thumb; it will cause a hardfault. */
// }
// 没有定义，不能初始化C++ 的static 变量，故需要添加这个函数
typedef int (*init_func_t)(void);
extern init_func_t __preinit_array_start[];
extern init_func_t __preinit_array_end[];
extern init_func_t __init_array_start[];
extern init_func_t __init_array_end[];

int rt_cpp_init(void)
{
  for (init_func_t *p = __preinit_array_start; p < __preinit_array_end; ++p) (*p)();
  for (init_func_t *p = __init_array_start; p < __init_array_end; ++p) (*p)();
}
INIT_PLATFORM_EXPORT(rt_cpp_init);