diff options
Diffstat (limited to 'Drivers/CMSIS/Device/ST/STM32H7xx/Source/Templates/system_stm32h7xx_singlecore.c')
| -rw-r--r-- | Drivers/CMSIS/Device/ST/STM32H7xx/Source/Templates/system_stm32h7xx_singlecore.c | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/Drivers/CMSIS/Device/ST/STM32H7xx/Source/Templates/system_stm32h7xx_singlecore.c b/Drivers/CMSIS/Device/ST/STM32H7xx/Source/Templates/system_stm32h7xx_singlecore.c new file mode 100644 index 0000000..f06738b --- /dev/null +++ b/Drivers/CMSIS/Device/ST/STM32H7xx/Source/Templates/system_stm32h7xx_singlecore.c @@ -0,0 +1,414 @@ +/**
+ ******************************************************************************
+ * @file system_stm32h7xx.c
+ * @author MCD Application Team
+ * @brief CMSIS Cortex-M7 Device Peripheral Access Layer System Source File.
+ * This provides system initialization template function is case of
+ * an application using a single core STM32H7 device
+ *
+ * This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32h7xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32h7xx_system
+ * @{
+ */
+
+/** @addtogroup STM32H7xx_System_Private_Includes
+ * @{
+ */
+
+#include "stm32h7xx.h"
+#include <math.h>
+
+#if !defined (HSE_VALUE)
+#define HSE_VALUE ((uint32_t)25000000) /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+#if !defined (CSI_VALUE)
+ #define CSI_VALUE ((uint32_t)4000000) /*!< Value of the Internal oscillator in Hz*/
+#endif /* CSI_VALUE */
+
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE ((uint32_t)64000000) /*!< Value of the Internal oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32H7xx_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32H7xx_System_Private_Defines
+ * @{
+ */
+
+/************************* Miscellaneous Configuration ************************/
+/*!< Uncomment the following line if you need to use initialized data in D2 domain SRAM (AHB SRAM) */
+/* #define DATA_IN_D2_SRAM */
+
+/* Note: Following vector table addresses must be defined in line with linker
+ configuration. */
+/*!< Uncomment the following line if you need to relocate the vector table
+ anywhere in FLASH BANK1 or AXI SRAM, else the vector table is kept at the automatic
+ remap of boot address selected */
+/* #define USER_VECT_TAB_ADDRESS */
+
+#if defined(USER_VECT_TAB_ADDRESS)
+/*!< Uncomment the following line if you need to relocate your vector Table
+ in D1 AXI SRAM else user remap will be done in FLASH BANK1. */
+/* #define VECT_TAB_SRAM */
+#if defined(VECT_TAB_SRAM)
+#define VECT_TAB_BASE_ADDRESS D1_AXISRAM_BASE /*!< Vector Table base address field.
+ This value must be a multiple of 0x400. */
+#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
+ This value must be a multiple of 0x400. */
+#else
+#define VECT_TAB_BASE_ADDRESS FLASH_BANK1_BASE /*!< Vector Table base address field.
+ This value must be a multiple of 0x400. */
+#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
+ This value must be a multiple of 0x400. */
+#endif /* VECT_TAB_SRAM */
+#endif /* USER_VECT_TAB_ADDRESS */
+/******************************************************************************/
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32H7xx_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32H7xx_System_Private_Variables
+ * @{
+ */
+ /* This variable is updated in three ways:
+ 1) by calling CMSIS function SystemCoreClockUpdate()
+ 2) by calling HAL API function HAL_RCC_GetHCLKFreq()
+ 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
+ Note: If you use this function to configure the system clock; then there
+ is no need to call the 2 first functions listed above, since SystemCoreClock
+ variable is updated automatically.
+ */
+ uint32_t SystemCoreClock = 64000000;
+ uint32_t SystemD2Clock = 64000000;
+ const uint8_t D1CorePrescTable[16] = {0, 0, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 6, 7, 8, 9};
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32H7xx_System_Private_FunctionPrototypes
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32H7xx_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the FPU setting and vector table location
+ * configuration.
+ * @param None
+ * @retval None
+ */
+void SystemInit (void)
+{
+#if defined (DATA_IN_D2_SRAM)
+ __IO uint32_t tmpreg;
+#endif /* DATA_IN_D2_SRAM */
+
+ /* FPU settings ------------------------------------------------------------*/
+ #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
+ SCB->CPACR |= ((3UL << (10*2))|(3UL << (11*2))); /* set CP10 and CP11 Full Access */
+ #endif
+ /* Reset the RCC clock configuration to the default reset state ------------*/
+
+ /* Increasing the CPU frequency */
+ if(FLASH_LATENCY_DEFAULT > (READ_BIT((FLASH->ACR), FLASH_ACR_LATENCY)))
+ {
+ /* Program the new number of wait states to the LATENCY bits in the FLASH_ACR register */
+ MODIFY_REG(FLASH->ACR, FLASH_ACR_LATENCY, (uint32_t)(FLASH_LATENCY_DEFAULT));
+ }
+
+ /* Set HSION bit */
+ RCC->CR |= RCC_CR_HSION;
+
+ /* Reset CFGR register */
+ RCC->CFGR = 0x00000000;
+
+ /* Reset HSEON, HSECSSON, CSION, HSI48ON, CSIKERON, PLL1ON, PLL2ON and PLL3ON bits */
+ RCC->CR &= 0xEAF6ED7FU;
+
+ /* Decreasing the number of wait states because of lower CPU frequency */
+ if(FLASH_LATENCY_DEFAULT < (READ_BIT((FLASH->ACR), FLASH_ACR_LATENCY)))
+ {
+ /* Program the new number of wait states to the LATENCY bits in the FLASH_ACR register */
+ MODIFY_REG(FLASH->ACR, FLASH_ACR_LATENCY, (uint32_t)(FLASH_LATENCY_DEFAULT));
+ }
+
+#if defined(D3_SRAM_BASE)
+ /* Reset D1CFGR register */
+ RCC->D1CFGR = 0x00000000;
+
+ /* Reset D2CFGR register */
+ RCC->D2CFGR = 0x00000000;
+
+ /* Reset D3CFGR register */
+ RCC->D3CFGR = 0x00000000;
+#else
+ /* Reset CDCFGR1 register */
+ RCC->CDCFGR1 = 0x00000000;
+
+ /* Reset CDCFGR2 register */
+ RCC->CDCFGR2 = 0x00000000;
+
+ /* Reset SRDCFGR register */
+ RCC->SRDCFGR = 0x00000000;
+#endif
+ /* Reset PLLCKSELR register */
+ RCC->PLLCKSELR = 0x02020200;
+
+ /* Reset PLLCFGR register */
+ RCC->PLLCFGR = 0x01FF0000;
+ /* Reset PLL1DIVR register */
+ RCC->PLL1DIVR = 0x01010280;
+ /* Reset PLL1FRACR register */
+ RCC->PLL1FRACR = 0x00000000;
+
+ /* Reset PLL2DIVR register */
+ RCC->PLL2DIVR = 0x01010280;
+
+ /* Reset PLL2FRACR register */
+
+ RCC->PLL2FRACR = 0x00000000;
+ /* Reset PLL3DIVR register */
+ RCC->PLL3DIVR = 0x01010280;
+
+ /* Reset PLL3FRACR register */
+ RCC->PLL3FRACR = 0x00000000;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= 0xFFFBFFFFU;
+
+ /* Disable all interrupts */
+ RCC->CIER = 0x00000000;
+
+#if (STM32H7_DEV_ID == 0x450UL)
+ /* single core line */
+ if((DBGMCU->IDCODE & 0xFFFF0000U) < 0x20000000U)
+ {
+ /* if stm32h7 revY*/
+ /* Change the switch matrix read issuing capability to 1 for the AXI SRAM target (Target 7) */
+ *((__IO uint32_t*)0x51008108) = 0x000000001U;
+ }
+#endif
+
+#if defined (DATA_IN_D2_SRAM)
+ /* in case of initialized data in D2 SRAM (AHB SRAM), enable the D2 SRAM clock (AHB SRAM clock) */
+#if defined(RCC_AHB2ENR_D2SRAM3EN)
+ RCC->AHB2ENR |= (RCC_AHB2ENR_D2SRAM1EN | RCC_AHB2ENR_D2SRAM2EN | RCC_AHB2ENR_D2SRAM3EN);
+#elif defined(RCC_AHB2ENR_D2SRAM2EN)
+ RCC->AHB2ENR |= (RCC_AHB2ENR_D2SRAM1EN | RCC_AHB2ENR_D2SRAM2EN);
+#else
+ RCC->AHB2ENR |= (RCC_AHB2ENR_AHBSRAM1EN | RCC_AHB2ENR_AHBSRAM2EN);
+#endif /* RCC_AHB2ENR_D2SRAM3EN */
+
+ tmpreg = RCC->AHB2ENR;
+ (void) tmpreg;
+#endif /* DATA_IN_D2_SRAM */
+
+ /*
+ * Disable the FMC bank1 (enabled after reset).
+ * This, prevents CPU speculation access on this bank which blocks the use of FMC during
+ * 24us. During this time the others FMC master (such as LTDC) cannot use it!
+ */
+ FMC_Bank1_R->BTCR[0] = 0x000030D2;
+
+ /* Configure the Vector Table location add offset address ------------------*/
+#if defined(USER_VECT_TAB_ADDRESS)
+ SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal D1 AXI-RAM or in Internal FLASH */
+#endif /* USER_VECT_TAB_ADDRESS */
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock , it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is CSI, SystemCoreClock will contain the CSI_VALUE(*)
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(**)
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(***)
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the CSI_VALUE(*),
+ * HSI_VALUE(**) or HSE_VALUE(***) multiplied/divided by the PLL factors.
+ *
+ * (*) CSI_VALUE is a constant defined in stm32h7xx_hal.h file (default value
+ * 4 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ * (**) HSI_VALUE is a constant defined in stm32h7xx_hal.h file (default value
+ * 64 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (***)HSE_VALUE is a constant defined in stm32h7xx_hal.h file (default value
+ * 25 MHz), user has to ensure that HSE_VALUE is same as the real
+ * frequency of the crystal used. Otherwise, this function may
+ * have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate (void)
+{
+ uint32_t pllp, pllsource, pllm, pllfracen, hsivalue, tmp;
+ float_t fracn1, pllvco;
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+
+ switch (RCC->CFGR & RCC_CFGR_SWS)
+ {
+ case RCC_CFGR_SWS_HSI: /* HSI used as system clock source */
+ SystemCoreClock = (uint32_t) (HSI_VALUE >> ((RCC->CR & RCC_CR_HSIDIV)>> 3));
+
+ break;
+
+ case RCC_CFGR_SWS_CSI: /* CSI used as system clock source */
+ SystemCoreClock = CSI_VALUE;
+ break;
+
+ case RCC_CFGR_SWS_HSE: /* HSE used as system clock source */
+ SystemCoreClock = HSE_VALUE;
+ break;
+
+ case RCC_CFGR_SWS_PLL1: /* PLL1 used as system clock source */
+
+ /* PLL_VCO = (HSE_VALUE or HSI_VALUE or CSI_VALUE/ PLLM) * PLLN
+ SYSCLK = PLL_VCO / PLLR
+ */
+ pllsource = (RCC->PLLCKSELR & RCC_PLLCKSELR_PLLSRC);
+ pllm = ((RCC->PLLCKSELR & RCC_PLLCKSELR_DIVM1)>> 4) ;
+ pllfracen = ((RCC->PLLCFGR & RCC_PLLCFGR_PLL1FRACEN)>>RCC_PLLCFGR_PLL1FRACEN_Pos);
+ fracn1 = (float_t)(uint32_t)(pllfracen* ((RCC->PLL1FRACR & RCC_PLL1FRACR_FRACN1)>> 3));
+
+ if (pllm != 0U)
+ {
+ switch (pllsource)
+ {
+ case RCC_PLLCKSELR_PLLSRC_HSI: /* HSI used as PLL clock source */
+
+ hsivalue = (HSI_VALUE >> ((RCC->CR & RCC_CR_HSIDIV)>> 3)) ;
+ pllvco = ( (float_t)hsivalue / (float_t)pllm) * ((float_t)(uint32_t)(RCC->PLL1DIVR & RCC_PLL1DIVR_N1) + (fracn1/(float_t)0x2000) +(float_t)1 );
+
+ break;
+
+ case RCC_PLLCKSELR_PLLSRC_CSI: /* CSI used as PLL clock source */
+ pllvco = ((float_t)CSI_VALUE / (float_t)pllm) * ((float_t)(uint32_t)(RCC->PLL1DIVR & RCC_PLL1DIVR_N1) + (fracn1/(float_t)0x2000) +(float_t)1 );
+ break;
+
+ case RCC_PLLCKSELR_PLLSRC_HSE: /* HSE used as PLL clock source */
+ pllvco = ((float_t)HSE_VALUE / (float_t)pllm) * ((float_t)(uint32_t)(RCC->PLL1DIVR & RCC_PLL1DIVR_N1) + (fracn1/(float_t)0x2000) +(float_t)1 );
+ break;
+
+ default:
+ hsivalue = (HSI_VALUE >> ((RCC->CR & RCC_CR_HSIDIV)>> 3)) ;
+ pllvco = ((float_t)hsivalue / (float_t)pllm) * ((float_t)(uint32_t)(RCC->PLL1DIVR & RCC_PLL1DIVR_N1) + (fracn1/(float_t)0x2000) +(float_t)1 );
+ break;
+ }
+ pllp = (((RCC->PLL1DIVR & RCC_PLL1DIVR_P1) >>9) + 1U ) ;
+ SystemCoreClock = (uint32_t)(float_t)(pllvco/(float_t)pllp);
+ }
+ else
+ {
+ SystemCoreClock = 0U;
+ }
+ break;
+
+ default:
+ SystemCoreClock = (uint32_t) (HSI_VALUE >> ((RCC->CR & RCC_CR_HSIDIV)>> 3));
+ break;
+ }
+
+ /* Compute SystemClock frequency --------------------------------------------------*/
+#if defined (RCC_D1CFGR_D1CPRE)
+ tmp = D1CorePrescTable[(RCC->D1CFGR & RCC_D1CFGR_D1CPRE)>> RCC_D1CFGR_D1CPRE_Pos];
+
+ /* SystemCoreClock frequency : CM7 CPU frequency */
+ SystemCoreClock >>= tmp;
+
+ /* SystemD2Clock frequency : AXI and AHBs Clock frequency */
+ SystemD2Clock = (SystemCoreClock >> ((D1CorePrescTable[(RCC->D1CFGR & RCC_D1CFGR_HPRE)>> RCC_D1CFGR_HPRE_Pos]) & 0x1FU));
+#else
+ tmp = D1CorePrescTable[(RCC->CDCFGR1 & RCC_CDCFGR1_CDCPRE)>> RCC_CDCFGR1_CDCPRE_Pos];
+
+ SystemCoreClock >>= tmp;
+ /* SystemD2Clock frequency : AXI and AHBs Clock frequency */
+ SystemD2Clock = (SystemCoreClock >> ((D1CorePrescTable[(RCC->CDCFGR1 & RCC_CDCFGR1_HPRE)>> RCC_CDCFGR1_HPRE_Pos]) & 0x1FU));
+#endif
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
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