From 2e93d4167d6f923e9bb8ffc59478c225e756ecf2 Mon Sep 17 00:00:00 2001 From: iabdalkader Date: Thu, 22 Feb 2018 20:31:38 +0200 Subject: [PATCH] stm32/system_stm32: Add H7 MCU system initialisation. --- ports/stm32/system_stm32.c | 150 ++++++++++++++++++++++++++++++++----- 1 file changed, 132 insertions(+), 18 deletions(-) diff --git a/ports/stm32/system_stm32.c b/ports/stm32/system_stm32.c index b71a03181a..bd25a149b4 100644 --- a/ports/stm32/system_stm32.c +++ b/ports/stm32/system_stm32.c @@ -135,6 +135,17 @@ const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4}; const uint32_t MSIRangeTable[12] = {100000, 200000, 400000, 800000, 1000000, 2000000, \ 4000000, 8000000, 16000000, 24000000, 32000000, 48000000}; +#elif defined(STM32H7) + +#define CONFIG_RCC_CR_1ST (RCC_CR_HSION) +#define CONFIG_RCC_CR_2ND (~0xEAF6ED7F) +#define CONFIG_RCC_PLLCFGR (0x00000000) + +#define SRAM_BASE D1_AXISRAM_BASE +#define FLASH_BASE FLASH_BANK1_BASE +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}; + #else #error Unknown processor #endif @@ -216,16 +227,53 @@ void SystemInit(void) /* Reset PLLCFGR register */ RCC->PLLCFGR = CONFIG_RCC_PLLCFGR; + #if defined(STM32H7) + /* Reset D1CFGR register */ + RCC->D1CFGR = 0x00000000; + + /* Reset D2CFGR register */ + RCC->D2CFGR = 0x00000000; + + /* Reset D3CFGR register */ + RCC->D3CFGR = 0x00000000; + + /* Reset PLLCKSELR register */ + RCC->PLLCKSELR = 0x00000000; + + /* Reset PLL1DIVR register */ + RCC->PLL1DIVR = 0x00000000; + + /* Reset PLL1FRACR register */ + RCC->PLL1FRACR = 0x00000000; + + /* Reset PLL2DIVR register */ + RCC->PLL2DIVR = 0x00000000; + + /* Reset PLL2FRACR register */ + RCC->PLL2FRACR = 0x00000000; + + /* Reset PLL3DIVR register */ + RCC->PLL3DIVR = 0x00000000; + + /* Reset PLL3FRACR register */ + RCC->PLL3FRACR = 0x00000000; + #endif + /* Reset HSEBYP bit */ RCC->CR &= (uint32_t)0xFFFBFFFF; /* Disable all interrupts */ #if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7) RCC->CIR = 0x00000000; - #elif defined(MCU_SERIES_L4) + #elif defined(MCU_SERIES_L4) || defined(STM32H7) RCC->CIER = 0x00000000; #endif + #if defined(STM32H7) + /* Change the switch matrix read issuing capability to 1 for the AXI SRAM target (Target 7) */ + *((__IO uint32_t*)0x51008108) = 0x00000001; + #endif + /* Configure the Vector Table location add offset address ------------------*/ #ifdef VECT_TAB_SRAM SCB->VTOR = SRAM1_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */ @@ -319,26 +367,44 @@ void SystemInit(void) */ void SystemClock_Config(void) { - RCC_ClkInitTypeDef RCC_ClkInitStruct; - RCC_OscInitTypeDef RCC_OscInitStruct; + RCC_ClkInitTypeDef RCC_ClkInitStruct; + RCC_OscInitTypeDef RCC_OscInitStruct; + #if defined(STM32H7) + RCC_PeriphCLKInitTypeDef PeriphClkInitStruct; + #endif - #if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7) - /* Enable Power Control clock */ - __PWR_CLK_ENABLE(); + #if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7) || defined(STM32H7) - /* The voltage scaling allows optimizing the power consumption when the device is - clocked below the maximum system frequency, to update the voltage scaling value - regarding system frequency refer to product datasheet. */ - __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); + /* Enable Power Control clock */ + #if defined(STM32H7) + MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0); + #else + __PWR_CLK_ENABLE(); + #endif + + /* The voltage scaling allows optimizing the power consumption when the device is + clocked below the maximum system frequency, to update the voltage scaling value + regarding system frequency refer to product datasheet. */ + __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); #elif defined(MCU_SERIES_L4) // Configure LSE Drive Capability __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW); #endif + #if defined(STM32H7) + // Wait for PWR_FLAG_VOSRDY + while ((PWR->D3CR & (PWR_D3CR_VOSRDY)) != PWR_D3CR_VOSRDY) { + } + #endif + /* Enable HSE Oscillator and activate PLL with HSE as source */ - #if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7) + #if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7) || defined(STM32H7) RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; + RCC_OscInitStruct.HSIState = RCC_HSI_OFF; + #if defined(STM32H7) + RCC_OscInitStruct.CSIState = RCC_CSI_OFF; + #endif RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; #elif defined(MCU_SERIES_L4) RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI; @@ -352,6 +418,9 @@ void SystemClock_Config(void) /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); + #if defined(STM32H7) + RCC_ClkInitStruct.ClockType |= (RCC_CLOCKTYPE_D3PCLK1 | RCC_CLOCKTYPE_D1PCLK1); + #endif RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; #if defined(MICROPY_HW_CLK_LAST_FREQ) && MICROPY_HW_CLK_LAST_FREQ @@ -401,23 +470,54 @@ void SystemClock_Config(void) RCC_OscInitStruct.PLL.PLLN = MICROPY_HW_CLK_PLLN; RCC_OscInitStruct.PLL.PLLP = MICROPY_HW_CLK_PLLP; RCC_OscInitStruct.PLL.PLLQ = MICROPY_HW_CLK_PLLQ; - #if defined(MCU_SERIES_L4) + #if defined(MCU_SERIES_L4) || defined(STM32H7) RCC_OscInitStruct.PLL.PLLR = MICROPY_HW_CLK_PLLR; #endif - RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; + #if defined(STM32H7) + RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1; + RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE; + RCC_OscInitStruct.PLL.PLLFRACN = 0; + #endif + #if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7) + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; #elif defined(MCU_SERIES_L4) + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; + #elif defined(STM32H7) + 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; #endif #endif - if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) - { - __fatal_error("HAL_RCC_OscConfig"); - } + + if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { + __fatal_error("HAL_RCC_OscConfig"); + } + +#if defined(STM32H7) + /* PLL3 for USB Clock */ + PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB; + PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_PLL3; + PeriphClkInitStruct.PLL3.PLL3M = 4; + PeriphClkInitStruct.PLL3.PLL3N = 120; + PeriphClkInitStruct.PLL3.PLL3P = 2; + PeriphClkInitStruct.PLL3.PLL3Q = 5; + PeriphClkInitStruct.PLL3.PLL3R = 2; + PeriphClkInitStruct.PLL3.PLL3RGE = RCC_PLL3VCIRANGE_1; + PeriphClkInitStruct.PLL3.PLL3VCOSEL = RCC_PLL3VCOWIDE; + PeriphClkInitStruct.PLL3.PLL3FRACN = 0; + if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { + __fatal_error("HAL_RCCEx_PeriphCLKConfig"); + } +#endif #if defined(MCU_SERIES_F7) /* Activate the OverDrive to reach the 200 MHz Frequency */ @@ -436,6 +536,20 @@ void SystemClock_Config(void) __fatal_error("HAL_RCC_ClockConfig"); } +#if defined(STM32H7) + /* Activate CSI clock mandatory for I/O Compensation Cell*/ + __HAL_RCC_CSI_ENABLE() ; + + /* Enable SYSCFG clock mandatory for I/O Compensation Cell */ + __HAL_RCC_SYSCFG_CLK_ENABLE() ; + + /* Enable the I/O Compensation Cell */ + HAL_EnableCompensationCell(); + + /* Enable the USB voltage level detector */ + HAL_PWREx_EnableUSBVoltageDetector(); +#endif + #if defined(MCU_SERIES_F7) // The DFU bootloader changes the clocksource register from its default power // on reset value, so we set it back here, so the clocksources are the same @@ -486,7 +600,7 @@ void SystemClock_Config(void) } void HAL_MspInit(void) { -#if defined(MCU_SERIES_F7) +#if defined(MCU_SERIES_F7) || defined(STM32H7) /* Enable I-Cache */ SCB_EnableICache();