| /* |
| * Copyright 2017 NXP |
| * All rights reserved. |
| * |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include "fsl_flexram.h" |
| |
| /******************************************************************************* |
| * Definitions |
| ******************************************************************************/ |
| |
| /* Component ID definition, used by tools. */ |
| #ifndef FSL_COMPONENT_ID |
| #define FSL_COMPONENT_ID "platform.drivers.flexram" |
| #endif |
| |
| /******************************************************************************* |
| * Prototypes |
| ******************************************************************************/ |
| /*! |
| * @brief Gets the instance from the base address to be used to gate or ungate the module clock |
| * |
| * @param base FLEXRAM base address |
| * |
| * @return The FLEXRAM instance |
| */ |
| static uint32_t FLEXRAM_GetInstance(FLEXRAM_Type *base); |
| |
| /*! |
| * @brief FLEXRAM map TCM size to register value |
| * |
| * @param tcmBankNum tcm banknumber |
| * @retval register value correspond to the tcm size |
| */ |
| static uint8_t FLEXRAM_MapTcmSizeToRegister(uint8_t tcmBankNum); |
| |
| /******************************************************************************* |
| * Variables |
| ******************************************************************************/ |
| /*! @brief Pointers to FLEXRAM bases for each instance. */ |
| static FLEXRAM_Type *const s_flexramBases[] = FLEXRAM_BASE_PTRS; |
| |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /*! @brief Pointers to FLEXRAM clocks for each instance. */ |
| static const clock_ip_name_t s_flexramClocks[] = FLEXRAM_CLOCKS; |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| |
| /******************************************************************************* |
| * Code |
| ******************************************************************************/ |
| static uint32_t FLEXRAM_GetInstance(FLEXRAM_Type *base) |
| { |
| uint32_t instance; |
| |
| /* Find the instance index from base address mappings. */ |
| for (instance = 0; instance < ARRAY_SIZE(s_flexramBases); instance++) |
| { |
| if (s_flexramBases[instance] == base) |
| { |
| break; |
| } |
| } |
| |
| assert(instance < ARRAY_SIZE(s_flexramBases)); |
| |
| return instance; |
| } |
| |
| /*! |
| * brief FLEXRAM module initialization function. |
| * |
| * param base FLEXRAM base address. |
| */ |
| void FLEXRAM_Init(FLEXRAM_Type *base) |
| { |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Ungate ENET clock. */ |
| CLOCK_EnableClock(s_flexramClocks[FLEXRAM_GetInstance(base)]); |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| |
| /* enable all the interrupt status */ |
| base->INT_STAT_EN |= kFLEXRAM_InterruptStatusAll; |
| /* clear all the interrupt status */ |
| base->INT_STATUS |= kFLEXRAM_InterruptStatusAll; |
| /* disable all the interrpt */ |
| base->INT_SIG_EN = 0U; |
| } |
| |
| /*! |
| * brief Deinitializes the FLEXRAM. |
| * |
| */ |
| void FLEXRAN_Deinit(FLEXRAM_Type *base) |
| { |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Ungate ENET clock. */ |
| CLOCK_DisableClock(s_flexramClocks[FLEXRAM_GetInstance(base)]); |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| } |
| |
| static uint8_t FLEXRAM_MapTcmSizeToRegister(uint8_t tcmBankNum) |
| { |
| uint8_t tcmSizeConfig = 0U; |
| uint32_t totalTcmSize = 0U; |
| |
| /* if bank number is a odd value, use a new bank number which bigger than target */ |
| do |
| { |
| if ((tcmBankNum & (tcmBankNum - 1U)) == 0U) |
| { |
| break; |
| } |
| } while (++tcmBankNum < FSL_FEATURE_FLEXRAM_INTERNAL_RAM_TOTAL_BANK_NUMBERS); |
| |
| totalTcmSize = tcmBankNum * (FSL_FEATURE_FLEXRAM_INTERNAL_RAM_BANK_SIZE >> 10U); |
| /* get bit '1' position */ |
| while (totalTcmSize) |
| { |
| if ((totalTcmSize & 1U) == 0U) |
| { |
| tcmSizeConfig++; |
| } |
| else |
| { |
| break; |
| } |
| totalTcmSize >>= 1U; |
| } |
| |
| return tcmSizeConfig + 1U; |
| } |
| |
| void FLEXRAM_SetTCMSize(uint8_t itcmBankNum, uint8_t dtcmBankNum) |
| { |
| assert(itcmBankNum <= FSL_FEATURE_FLEXRAM_INTERNAL_RAM_TOTAL_BANK_NUMBERS); |
| assert(dtcmBankNum <= FSL_FEATURE_FLEXRAM_INTERNAL_RAM_TOTAL_BANK_NUMBERS); |
| |
| /* dtcm configuration */ |
| if (dtcmBankNum != 0U) |
| { |
| IOMUXC_GPR->GPR14 &= ~IOMUXC_GPR_GPR14_CM7_CFGDTCMSZ_MASK; |
| IOMUXC_GPR->GPR14 |= IOMUXC_GPR_GPR14_CM7_CFGDTCMSZ(FLEXRAM_MapTcmSizeToRegister(dtcmBankNum)); |
| IOMUXC_GPR->GPR16 |= IOMUXC_GPR_GPR16_INIT_DTCM_EN_MASK; |
| } |
| else |
| { |
| IOMUXC_GPR->GPR16 &= ~IOMUXC_GPR_GPR16_INIT_DTCM_EN_MASK; |
| } |
| |
| /* itcm configuration */ |
| if (itcmBankNum != 0U) |
| { |
| IOMUXC_GPR->GPR14 &= ~IOMUXC_GPR_GPR14_CM7_CFGITCMSZ_MASK; |
| IOMUXC_GPR->GPR14 |= IOMUXC_GPR_GPR14_CM7_CFGITCMSZ(FLEXRAM_MapTcmSizeToRegister(itcmBankNum)); |
| IOMUXC_GPR->GPR16 |= IOMUXC_GPR_GPR16_INIT_ITCM_EN_MASK; |
| } |
| else |
| { |
| IOMUXC_GPR->GPR16 &= ~IOMUXC_GPR_GPR16_INIT_ITCM_EN_MASK; |
| } |
| } |
| |
| /*! |
| * brief FLEXRAM allocate on-chip ram for OCRAM,ITCM,DTCM |
| * This function is independent of FLEXRAM_Init, it can be called directly if ram re-allocate |
| * is needed. |
| * param config allocate configuration. |
| * retval kStatus_InvalidArgument the argument is invalid |
| * kStatus_Success allocate success |
| */ |
| status_t FLEXRAM_AllocateRam(flexram_allocate_ram_t *config) |
| { |
| assert(config != NULL); |
| |
| uint8_t dtcmBankNum = config->dtcmBankNum; |
| uint8_t itcmBankNum = config->itcmBankNum; |
| uint8_t ocramBankNum = config->ocramBankNum; |
| uint32_t bankCfg = 0U, i = 0U; |
| |
| /* check the arguments */ |
| if (FSL_FEATURE_FLEXRAM_INTERNAL_RAM_TOTAL_BANK_NUMBERS < (dtcmBankNum + itcmBankNum + ocramBankNum)) |
| { |
| return kStatus_InvalidArgument; |
| } |
| /* flexram bank config value */ |
| for (i = 0U; i < FSL_FEATURE_FLEXRAM_INTERNAL_RAM_TOTAL_BANK_NUMBERS; i++) |
| { |
| if (i < ocramBankNum) |
| { |
| bankCfg |= ((uint32_t)kFLEXRAM_BankOCRAM) << (i * 2); |
| continue; |
| } |
| |
| if (i < (dtcmBankNum + ocramBankNum)) |
| { |
| bankCfg |= ((uint32_t)kFLEXRAM_BankDTCM) << (i * 2); |
| continue; |
| } |
| |
| if (i < (dtcmBankNum + ocramBankNum + itcmBankNum)) |
| { |
| bankCfg |= ((uint32_t)kFLEXRAM_BankITCM) << (i * 2); |
| continue; |
| } |
| } |
| IOMUXC_GPR->GPR17 = bankCfg; |
| /* set TCM size */ |
| FLEXRAM_SetTCMSize(itcmBankNum, dtcmBankNum); |
| /* select ram allocate source from FLEXRAM_BANK_CFG */ |
| FLEXRAM_SetAllocateRamSrc(kFLEXRAM_BankAllocateThroughBankCfg); |
| |
| return kStatus_Success; |
| } |