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rt-thread-official/bsp/imxrt1052-evk/Libraries/drivers/fsl_flexram.c

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/*
* The Clear BSD License
* Copyright 2017 NXP
* All rights reserved.
*
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted (subject to the limitations in the disclaimer below) provided
* that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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);
/*!
* @brief FLEXRAM configure TCM size
* This function is used to set the TCM to the actual size.When access to the TCM memory boundary ,hardfault will
* raised by core.
* @param itcmBankNum itcm bank number to allocate
* @param dtcmBankNum dtcm bank number to allocate
*/
static status_t FLEXRAM_SetTCMSize(uint8_t itcmBankNum, uint8_t dtcmBankNum);
/*******************************************************************************
* 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;
}
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;
}
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;
switch (tcmBankNum * FSL_FEATURE_FLEXRAM_INTERNAL_RAM_BANK_SIZE)
{
case kFLEXRAM_TCMSize32KB:
tcmSizeConfig = 6U;
break;
case kFLEXRAM_TCMSize64KB:
tcmSizeConfig = 7U;
break;
case kFLEXRAM_TCMSize128KB:
tcmSizeConfig = 8U;
break;
case kFLEXRAM_TCMSize256KB:
tcmSizeConfig = 9U;
break;
case kFLEXRAM_TCMSize512KB:
tcmSizeConfig = 10U;
break;
default:
break;
}
return tcmSizeConfig;
}
static status_t FLEXRAM_SetTCMSize(uint8_t itcmBankNum, uint8_t dtcmBankNum)
{
/* 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;
}
return kStatus_Success;
}
status_t FLEXRAM_AllocateRam(flexram_allocate_ram_t *config)
{
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)) ||
((dtcmBankNum != 0U) && ((dtcmBankNum & (dtcmBankNum - 1u)) != 0U)) ||
((itcmBankNum != 0U) && ((itcmBankNum & (itcmBankNum - 1u)) != 0U)))
{
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;
}
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